Consulta: typeFacets:"Presentation"
Registros recuperados: 1.470
Data/hora: 11/06/2024 07:07:00

Discutindo o futuro da sustentabilidade energética no Brasil
Provedor de dados: 25
Autores: Willian, J. Ferreira; Getulio, T. Batista.
Trabalho apresentado na Semana Nacional de Ciência e Tecnologia 2014 e na SIPAT-Meio Ambiente Avibras Indústria Aeroespacial 2014.
Tipo: Presentation
Palavras-chave: Energia; Desenvolvimento Sustentável; Economia; Ambiental.
Ano: 2014
URL: http://hdl.handle.net/2315/279

O ciclo hidrológico em plantações de Eucalipto
Provedor de dados: 25
Autores: Soares, João Vianei.
Ciclo hidrológico em Eucalipto Questões de primeira ordem  Qual é a relação entre oferta e demanda de água por plantações de Eucalipto? Qual é a estratégia de manutenção do funcionamento fisiológico durante períodos de seca? O Eucalipto seca o solo? Como se comparam os usos de água do eucalipto e da Mata Atlântica?
Tipo: Presentation
Palavras-chave: Ciclo Hidrológico; Controle ecofisiológico; Parametrização do solo; Balanço de água em Eucalipto.
Ano: 2007
URL: http://hdl.handle.net/2315/132

Reposição Florestal e Educação Ambiental na Bacia do Rio Una, Bacia do Paraíba do Sul, 40p.
Provedor de dados: 25
Autores: Cícero, Carlos Moure; Catelani, Celso de Souza; Batista, Getulio Teixeira.
Apresentação realizada pelo Prof. Dr. Getulio Teixeira Batista na Mesa 3 - O Plano de Bacia do Rio Paraíba do Sul e suas Implicações nas Atividades Rurais. Relatou-se o estudo de caso da Bacia do Rio Una, importante afluente do Rio Paraíba do Sul.
Tipo: Presentation
Palavras-chave: Essências Nativas; Áreas de Preservação.
Ano: 2006
URL: http://hdl.handle.net/2315/70

Tratamento de efluentes domésticos por leito cultivado
Provedor de dados: 25
Autores: Fortes Neto, Paulo.
O efluente doméstico por ser resíduo altamente poluidor, promove sérios impactos ambientais quando disposto diretamente sem tratamento em cursos d'água.
Tipo: Presentation
Palavras-chave: Reuso da água; Tratamento de efluentes; Fossa séptica.
Ano: 2007
URL: http://hdl.handle.net/2315/131

Sustentabilidade e Desenvolvimento
Provedor de dados: 25
Autores: Batista, Getulio T.
Palestra apresentado no XVI Encontro de IniciaÃ§Ã£o CientÃ­fica, XII Mostra de PÃ³s-graduaÃ§Ã£o da Universidade de TaubatÃ© focando a questÃ£o do desenvolvimento sustentÃ¡vel com discussÃ£o de um novo paradigma de desenvolvimento baseado em premissas ecolÃ³gicas.
Tipo: Presentation
Palavras-chave: Analise Ambiental; Pegada Ecologica.
Ano: 2011
URL: http://hdl.handle.net/2315/179

O FUTURO DO BIODIESEL COMO COMBUSTÍVEL SUSTENTÁVEL NO BRASIL
Provedor de dados: 25
Autores: Gabriel, Marinho; Lia, Braz; Getulio, T. Batista; Marcelo, dos S. Targa; Willian, J. Ferreira.
O biodiesel tem sido considerado como o mais promissor dos produtos na busca por combustíveis alternativos para o segmento de transportes, de cargas e passageiros. O setor espera que em 2014 seja comercializado um volume pelo menos 16% maior do que em 2013, taxa projetada pelo aumento da mistura de biodiesel no diesel fóssil, de 6% (B6) para 7% (B7) em volume, já aprovado pelo governo. A fim de alinhar fatores econômicos com benefícios socioambientais aonde vem sendo produzido, faz-se necessário que a produção seja sustentável, proveniente de novos cultivares de oleaginosas. Neste trabalho procurou-se investigar o futuro do biodiesel no país, observando dados divulgados pela Agência Nacional do Petróleo, Gás Natural e Biocombustíveis (ANP) e barreiras para...
Tipo: Presentation
Palavras-chave: Bioenergia; Transporte; Diesel; Combustíveis.
Ano: 2014
URL: http://hdl.handle.net/2315/281

Emissão e Seqüestro de Carbono
Provedor de dados: 25
Autores: Batista, Getulio Teixeira.
Essa apresentação em formato pdf foi utilizada em uma palestra para o programa de pòs-Graduação em Ciências Ambientais da Universidade de Taubaté. Vários slides são apresentados para ilustrar os forçantes da geração dos gases de efeito estufa e para ilustrar o mercado de carbono dentro do contexto do protocolo de Kyoto.
Tipo: Presentation
Palavras-chave: Biomass; Biomassa; Gases de efeito estufa; Mudanças Climáticas; Mudanças globais; Mercado de carbono.
Ano: 2006
URL: http://hdl.handle.net/2315/50

Minicurso: Área de Preservação Permanente (APP)
Provedor de dados: 25
Autores: Oliveira, Ivan Silva de; Batista, Getulio Teixeira; Catelani, Celso de Souza.
Slides e Anexo descrevendo a metodologia para caracterização de APPs.
Tipo: Presentation
Palavras-chave: Área de Preservação Permanente; Legislação Ambiental; Código Florestal; Resolução CONAMA 303/2002.
Ano: 2006
URL: http://hdl.handle.net/2315/66

Realidade e futuro do pinhão manso (Jatropha curcas L.) na produção sustentável de biodiesel no Vale do Paraíba/SP
Provedor de dados: 25
Autores: Ferreira, Willian J.; Batista, Getulio T.
A utilização mais eficiente de energia e a transição de fontes fósseis para alternativas energéticas renováveis têm sido propostas desafiadoras para o mundo atual. Cresce o número de pesquisas no setor dos biocombustíveis e existem motivações para a produção e uso do biodiesel. No Vale do Paraíba/SP, o pinhão manso tem despertado o interesse dos produtores rurais e seu plantio em áreas degradadas favorecerá o melhoramento das propriedades do solo e das condições ambientais. Ao criar cenários de otimismo à  cadeia produtiva do biodiesel a espécie se torna um importante elemento de sustentabilidade, fomentando o desenvolvimento da região.
Tipo: Presentation
Palavras-chave: Jatropha; Energia alternativa; Biodiesel; Mudanças climáticas.
Ano: 2010
URL: http://hdl.handle.net/2315/157

O desenvolvimento proporcionado pelo uso de  energias renováveis: conhecer para planejar.
Provedor de dados: 25
Autores: Ferreira, Willian J.; Batista, Getulio T.
Palestra apresentada aos estudantes que participaram da Câmara Jovem de Jacareí em 2010.
Tipo: Presentation
Palavras-chave: Energias renováveis; Meio ambiente; Desenvolvimento.
Ano: 2011
URL: http://hdl.handle.net/2315/161

Análise de dados de Estações Meteorológicas de Superficie Automatica e Convencional
Provedor de dados: 25
Autores: Paula, Geberson Ricardo; Fisch, Gilberto.
Conhecer a atmosfera do planeta Terra é uma das aspirações que vêm sendo perseguidas pela humanidade desde os tempos mais remotos. A partir do momento em que o homem tomou consciência da interdependência das condições Climáticas e daquelas resultantes de sua deliberada intervenção no meio natural como necessidade para o desenvolvimento social, ele passou a produzir e registrar o conhecimento sobre os componentes da natureza. Neste contexto, se torna necessario a instalação de estações meteorologicas, porem existem diversos tipos de estações, desde manuais ate as mais modernas que são informatizadas.Assim, foi feito a comparação de dados de duas estações, uma convencional e outras duas automaticas, no Vale do Paraiba Paulista.
Tipo: Presentation
Palavras-chave: Estações Meteorológicas; Meteorologia; Climatologia.
Ano: 2011
URL: http://hdl.handle.net/2315/164

GPS TrackMaker: principais funções e aplicações
Provedor de dados: 25
Autores: Sauruk, Gilson Sauruk; Disperati, Attilio Antonio; Oliveira Filho, Paulo Costa.
A presente publicação aborda os seguintes itens:  1) Considerações gerais do software,  2) Tela inicial do programa nas versões gratuito e profissional, 3) Detalhes da tela inicial, 4) Configurações e ajustes iniciais,  5) Tutorial para descarregar os dados armazenados no receptor de navegação GPS,  6) Tela principal após descarregamento de dados do receptor GPS, 7) Tela principal após a seleção e edição de pontos e de trilhas; o resultado final em forma de mapa, 8) Cálculo da área do polígono inserido no mapa, 9) Inserção e georreferenciamento de imagens; cruzamento de dados do GPS em uma imagem georreferenciada, 10) Referência bibliográfica.
Tipo: Presentation
Palavras-chave: GPS; Software TrackMaker; Georreferenciamento de imagem; Avaliação de recursos naturais.
Ano: 2007
URL: http://hdl.handle.net/2315/73

DIAGNÓSTICO E PROPOSTA DE MANEJO DE FRAGMENTOS FLORESTAIS NATIVOS E DA PAISAGEM EM UMA PROPRIEDADE FLORESTAL
Provedor de dados: 25
Autores: SCOLFORO, JOSÉ ROBERTO.
Existe uma controvérsia histórica sobre o papel desempenhado pelo eucalipto. Duas questões freqüentemente abordadas são:  1. a crença de que o eucalipto provoca rápido secamento do solo e;  2.  as perdas de biodiversidade ecológica em relação   ao ecossistema original.
Tipo: Presentation
Palavras-chave: MANEJO FLORESTAL; Microbacias; Inventario Florestal; Ciências Florestais.
Ano: 2007
URL: http://hdl.handle.net/2315/133

Óleos vegetais e a produção de biodiesel no Brasil.
Provedor de dados: 25
Autores: Ferreira, Willian J.
Material apresentado ao PPGCA-Belém, disciplina Desenvolvimento Sustentável, em outubro de 2010.
Tipo: Presentation
Palavras-chave: Biocombustíveis; Oleaginosas; Soja; Pinhão manso.
Ano: 2011
URL: http://hdl.handle.net/2315/163

Potencialidade das emissões de metano frente a produção de eletricidade no Brasil
Provedor de dados: 25
Autores: Braz, Lia; Ferreira, Willian J.; Targa, Marcelo S.; Batista, Getulio T.
Gás de efeito estufa com destacado papel na química e na física da atmosfera terrestre, o metano é produzido pela degradação anaeróbia de compostos orgânicos em ambientes diversificados. Hoje, o meio aquático responde por aproximadamente 40% das emissões globais do gás para a atmosfera e a densa rede hidrográfica brasileira pode ter grande participação nesses números, devido ao acúmulo e degradação de matéria orgânica nos trechos de baixa vazão de rios e áreas inundadas. A disponibilidade de recursos hídricos favorece a produção de energia pelas usinas hidrelétricas no país. No entanto, a matéria orgânica que se decompõe no fundo dos reservatórios apresenta potencial para elevar de maneira significativa as taxas de emissão de metano, causando alterações...
Tipo: Presentation
Palavras-chave: Gases de efeito estufa; Aquecimento global; Energia; Represas.
Ano: 2011
URL: http://hdl.handle.net/2315/159

Entraves na sustentabilidade do biodiesel de pinhão manso (Jatropha curcas L.) em países emergentes.
Provedor de dados: 25
Autores: Ferreira, Willian J.; Batista, Getulio T.
Palestra apresentada no Seminário de alunos: Energia, Meio Ambiente e Desenvovimento, do Programa de Pós Graduação em Energia do IEE/USP.
Tipo: Presentation
Palavras-chave: Política energética; Sustentabilidade; Biocombustíveis; Barreiras.
Ano: 2011
URL: http://hdl.handle.net/2315/162

Plano Nacional de Recursos Hí­dricos: A Bacia do Paraí­ba do Sul no Contexto do Plano
Provedor de dados: 25
Autores: SILVA, PAULO AUGUSTO ROMERA E.
Para o uso racional da Bacia hidrográfica do Pariaba do Sul é necessário: CONSOLIDAR O MARCO INTITUCIONAL; FORTALECER O SISTEMA DE GESTÃO; AÇÕES DE GESTÃO NA DEMANDA; INTEGRAÇÃO DA POLÍTICAS PÚBLICAS; CONTRIBUIR PARA A DESCONCENTRAÇÃO ECONÔMICA E A EQUIDADE SOCIAL; ANTECIPAR-SE AOS PROBLEMAS DE REGIÕES CRÍTICAS; FORTALECER A CAPACITAÇÃO; ESPAÇO PARA PARTICIPAÇÃO SOCIAL NA  IMPLANTAÇÃO DA POLÍTICA PÚBLICA; OPORTUNIDADE DA INSERÇÃO DA QUESTÃO DA ÁGUA NOS DEBATES NACIONAIS; GRADATIVA SENSIBILIZAÇÃO SOCIAL SOBRE SUA RELEVÂNCIA PARA O DESENVOLVIMENTO; RESPONSABILIDADES COMPARTILHADAS QUE DECORREM DOS ORGANISMOS COLEGIADOS; EXIGÊNCIA DE CAPACITAÇÃO DOS AGENTES NO EXERCÍCIO DE SUAS COMPETÊNCIAS; ENTENDIMENTO DOS PROCESSOS DE NEGOCIAÇÃO O QUE PRESSUPÕE ACEITAR...
Tipo: Presentation
Palavras-chave: Gestão de recursos hídricos; Uso sustentável da água; Cenários do uso da água.
Ano: 2007
URL: http://hdl.handle.net/2315/136

Pagamento por serviços ambientais
Provedor de dados: 25
Autores: Batista, G. T.
O ambiente nos fornece produtos ambientais, tais como: madeira, frutos, peles, carne, sementes, medicinas e serviços ambientais tais como: regulação de gases (produção de oxigênio e seqüestro de carbono), belezas cênicas, conservação da biodiversidade, proteção de solos e dos recursos hídricos que permitem a regulação do clima e a conservação da biodiversidade. O uso dos recursos naturais, seguindo normas legais, diminui o impacto sobre o meio ambiente, mas implicam em custos que muitas vezes são evitados, causando sérios problemas para a sustentabilidade de nosso planeta. Dessa forma, foram instituídos mecanismos de controle, tais como: licenciamento, repressão (multas, etc.) para monitorar e eventualmente sancionar quem não respeite estas regras de...
Tipo: Presentation
Palavras-chave: Meio ambiente; Preservação; Ecologia; Conservação.
Ano: 2010
URL: http://hdl.handle.net/2315/156

SEQUESTRO DE CARBONO: O quê é isso?
Provedor de dados: 25
Autores: Almeida, Ana Aparecida Silva.
Nessa apresentação parte-se de conceitos básicos sobre o fluxo de carbono nos ecossistemas e sua relação com  o efeito estufa e mudanças no clima do planeta Terra.
Tipo: Presentation
Palavras-chave: Sequestro de carbono; Mudanças climáticas.
Ano: 2011
URL: http://hdl.handle.net/2315/181

A alfabetização em Ciências e as mudanças climáticas globais
Provedor de dados: 25
Autores: Ferreira, Willian J.
Semana do Meio Ambiente - 2010.
Tipo: Presentation
Palavras-chave: Ensino informal; Concepções alternativas; Aquecimento global; Efeito estufa.
Ano: 2010
URL: http://hdl.handle.net/2315/155

MONITORAMENTO DE POLUENTES ATMOSFÉRICOS POR MEIO DE SENSORES ELETRÔNICOS DE BAIXO CUSTO
Provedor de dados: 25
Autores: Marcos, A. Silveira; Gabriel, Marinho; Lia, Braz; Ericka, V. C. Mariano; Dawilmar, G. de Araújo; Willian, J. Ferreira.
Trabalho submetido e apresentado no III CICTED, Taubaté, 2014.
Tipo: Presentation
Palavras-chave: Sensor MQ-9; Sensor MQ-2; Arduíno; Gases de Efeito Estufa.
Ano: 2014
URL: http://hdl.handle.net/2315/283

PROJETO PILOTO DE RECARGA ARTIFICIAL NA BACIA DO RIO UNA, MUNICÍPIO DE TAUBATÉ
Provedor de dados: 25
Autores: Diniz, Hélio Nóbile; Batista, Getulio Teixeira; Santoro, Jair; Targa, Marcelo dos Santos.
O projeto de recarga artificial de aqüíferos está sendo implementado na bacia hidrográfica do rio Una, no Município de Taubaté. O local do projeto é o Departamento de Ciências Agrárias da Universidade de Taubaté. A área foi escolhida porque é favorável à captação das águas em telhados e há condições topográficas para a injeção em poços, por gravidade .
Tipo: Presentation
Palavras-chave: Aqüífero freático; HIDROGEOLÓGICA; HIDROCLIMÁTICA.
Ano: 2007
URL: http://hdl.handle.net/2315/138

Programa de Microbacias: contribuição do planejamento de propriedades rurais para a ocupação sustentável da Bacia do Paraíba do Sul
Provedor de dados: 25
Autores: Ferreira Neto, Jovino Paulo; Martinelli, Marcos.
Programa estadual de microbacias hidrográficas do Estado de São Paulo. Planejamento Individual de Propriedades Rurais. Extensão Rural.
Tipo: Presentation
Palavras-chave: CATI; Desenvolvimento rural; Extensão rural.
Ano: 2007
URL: http://hdl.handle.net/2315/135

Florestas &amp; Crédito Carbono
Provedor de dados: 25
Autores: Batista, Getulio Teixeira.
Palestra em formato pdf com 44 slides sobre mudanças climáticas e efeito estufa e as possibilidades do mercardo de carbono para o Brasil. Fontes de emissão e o papel das florestas na mitigação do efeito estufa.
Tipo: Presentation
Palavras-chave: Mudanças climáticas; Efeito estufa; Mercado de carbono; Protocolo de Quioto.
Ano: 2008
URL: http://hdl.handle.net/2315/141

Impacto das Cheias e a Necessidade de um Plano de Macrodrenagem
Provedor de dados: 25
Autores: Targa, Marcelo Santos.
Essa palestra em formato pdf foi realizada em uma atividade do evento " 1ª Semana do Ambiente da Universidade de Taubaté - UNITAU" - mesa redonda intitulada " Gestão de bacias Hidrográficas: O estudo de caso do rio Una" feita pelo Programa de Pós-Graduação em Ciências Ambientais da Universidade de Taubaté para alunos dos cursos de graduação em Geografia, Engenharias Ambiental e Civil, Agronomia e Biologia. Vários slides se referem a junção das condições climáticas, antrópicas e do meio físico para  ilustrar a degradação e os problemas inerentes a macrodrenagem e as cheias do rio Una.
Tipo: Presentation
Palavras-chave: Macrodrenagem; Cheias; Erosão; Água.
Ano: 2009
URL: http://hdl.handle.net/2315/151

PERSPECTIVAS DE PRODUÇÃO E USO DO BIOQUEROSENE DE AVIAÇÃO NO TRANSPORTE AÉREO BRASILEIRO
Provedor de dados: 25
Autores: Edison, S. Paiva; Pedro, H. R. Santos; Pedro, C. Russi; Getulio, T. Batista; Willian, J. Ferreira.
Trabalho submetido e apresentado no III CICTED, Taubaté, 2014.
Tipo: Presentation
Palavras-chave: Bioenergia; Aeronáutica; Sustentabilidade; Pinhão Manso.
Ano: 2014
URL: http://hdl.handle.net/2315/282

Cobrança pelo Uso da Água A Situação da Bacia do Paraíba do Sul
Provedor de dados: 25
Autores: Campos, Jander Duarte.
COBRANÇA NO CÓDIGO DE ÁGUAS DE 1934  Estabelece que: O uso comum das águas pode ser gratuito ou retribuído, conforme as leis e regulamentos da circunscrição administrativa a que pertencem (art. 36, §1º e § 2º). A ninguém é lícito conspurcar ou contaminar as águas que não consome, com prejuízo para terceiros (art. 109), ressaltando que os trabalhos de salubridade das águas serão realizados à custa dos infratores que, além da responsabilidade criminal, se houver, responderão pelas perdas e danos que causarem e por multas que lhes forem impostas pelos regulamentos administrativos (art. 110, CA).
Tipo: Presentation
Palavras-chave: Gestão de recursos hídricos; Recuperação de áreas degradadas; Uso da água.
Ano: 2007
URL: http://hdl.handle.net/2315/127

IPABHi - Intituto de Pesquisas Ambientais em Bacias Hidrográficas
Provedor de dados: 25
Autores: Dias, Nelson W.
Desenvolver estudos e pesquisas destinadas a elaborar, testar, avaliar e implementar estratégias que viabilizem formas sustentáveis de uso dos recursos naturais inseridos no contexto geográfico de bacias hidrográficas, em especial os fatores determinantes da qualidade e quantidade de água, com o objetivo de otimizar processos de preservação e conservação do meio ambiente e promover atividades humanas, econômicas e ambientais, orientadas ao desenvolvimento sustentável.
Tipo: Presentation
Palavras-chave: IPABHi; Recursos Hídricos; SERHIDRO-PS.
Ano: 2007
URL: http://hdl.handle.net/2315/128

Avaliação do escoamento superficial e infiltração de água em solo cultivado com Pinhão Manso consorciado à pastagem degradada no Vale do Paraíba/SP
Provedor de dados: 25
Autores: Ferreira, W. J.; Batista, G. T.; Targa, M. S.
Material apresentado IV ECOSP e VIII ECOVALE/2010.
Tipo: Presentation
Palavras-chave: Energia renovável; Biodiesel; Balanço hídrico; Sustentabilidade.
Ano: 2010
URL: http://hdl.handle.net/2315/280

Histórico e Sustentabilidade da Bacia Hidrográfica do Paraíba do Sul: Geoprocessamento e Hidrologia
Provedor de dados: 25
Autores: Batista, G. T.; Targa, M. S.
Apresentado na forma de seminário no Encontro de Iniciação Científica da Universidade de Taubaté em ATIVIDADES ACADÊMICAS, CULTURAIS e CIENTÍFICAS | ENIC | MPG | SEMEX Para alunos, professores, pesquisadores e comunidade em geral, na 4ª FEIRA - DIA 17 DE OUTUBRO de 2012.
Tipo: Presentation
Palavras-chave: Sensoriamento remoto; Hidrologia; Recursos hídricos; Bacia hidrográfic.
Ano: 2012
URL: http://hdl.handle.net/2315/251

EFEITOS HIDROLÓGICOS DO MANENO DE FLORESTAS PLANTADAS COM EUCALIPTO
Provedor de dados: 25
Autores: Lima, Walter de Paula.
Eucalipto e água: a controvérsia continua viva! “O eucalipto seca o solo?” “Secou a minha nascente!” “O eucalipto fará o Jequitinhonha de São Paulo!” “O Espírito Santo será um imenso deserto verde”  “Tenebroso anúncio de massivas plantações de eucalipto!” Projetos de Lei em Assembléias Legislativas e Câmaras de Vereadores As mulheres da via campesina! “Nós não comemos eucalipto”
Tipo: Presentation
Palavras-chave: Manejo florestal; Eucalipto x água; Impactos ambientais; Balanço hídrico.
Ano: 2007
URL: http://hdl.handle.net/2315/134

Biodiesel no Vale do Paraíba: a Jatropha como agente do desenvolvimento sustentável
Provedor de dados: 25
Autores: Ferreira, Willian J.; Batista, Getulio T.
Ferreira, W. J.;Batista, G. T. Biodiesel no Vale do Paraíba: a Jatropha como agente do desenvolvimento sustentável. 2010, 15p.
Tipo: Presentation
Palavras-chave: Bioenergia; Pinhão manso; Biocombustíveis; Sustentabilidade; Uso do solo; Carbono.
Ano: 2010
URL: http://hdl.handle.net/2315/154

Técnica eletromagnética para o monitoramento ambiental
Provedor de dados: 25
Autores: Souza, Claudinei Fonseca.
Introdução geral  Técnica da TDR  Vantagens e desvantagens  Sondas de TDR  Problemas encontrados  Exemplos de aplicação
Tipo: Presentation
Palavras-chave: Monitoramento ambiental; Sondas de TDR; Técnica eletromagnética.
Ano: 2007
URL: http://hdl.handle.net/2315/129

Laboratório de Geoprocessamento Sensoriamento Remoto e Informática Rural
Provedor de dados: 25
Autores: Batista, Getulio Teixeira; Dias, Nelson W.
O Laboratório de Geoprocessamento, Sensoriamento Remoto e Informática Rural (LAGEO) do Departamento de Ciências Agrárias da Universidade de Taubaté desenvolve  projetos na área de geoprocessamento e sensoriamento remoto, através de convênios, parcerias e recursos externos de órgãos financiadores de pesquisas (FAPESP, FEHIDRO, CNPq e outros), a apresentação no Pré-Evento do SERHIDRO-PS 2007 abordará a apresentação de dis projetos realizados:    Projeto Una: ESTRUTURAÇÃO E DISPONIBILIZAÇÃO DO BANCO DE DADOS AMBIENTAIS DA BACIA DO RIO UNA, BACIA DO RIO PARAÍBA DO SUL, desenvolvido com recursos do FEHIDRO, contrato n° 280/2002.   Projeto Recarga: LEVANTAMENTO DAS ÁREAS DE RECARGA E DOS RECURSOS HÍDRICOS SUBTERRÂNEOS DA BACIA DO RIO PARAÍBA DO SUL, NORDESTE DO...
Tipo: Presentation
Palavras-chave: Geoprocessamento; Sensoriamento Remoto; Informática Rural.
Ano: 2007
URL: http://hdl.handle.net/2315/130

Construção de indicadores para cidades sustentáveis.
Provedor de dados: 25
Autores: Cocco, Maria Dolores Alves; Targa, Marcelo dos Santos; Oliveira, José Oswaldo Soares de; Thaumaturgo, Leila Regina Youssef; Guimarães, Eduardo de Souza.
A expansão urbana acarreta impactos ambientais negativos como a destruição da mata ciliar, a crescente impermeabilização do solo, a poluição dos cursos de água, a contaminação dos lençóis freáticos, o assoreamento dos  rios.A relevância deste trabalho está na elucidação das ações antrópicas como forma de construção de indicadores para ações de conservação do meio ambiente.
Tipo: Presentation
Palavras-chave: Ciências ambientais; Bacia hidrografica; Meio ambiente; Soiedade.
Ano: 2014
URL: http://hdl.handle.net/2315/278

Plano de Bacia do Rio Una: Resultados do Projeto Una
Provedor de dados: 25
Autores: Batista, Getulio Teixeira; Targa, Marcelo dos Santos; Catelani, Celso de Souza.
Apresentação feita na Mesa 3 do 14° Seminário G&amp;DR/MCA - Atividades Rurais no Vale do Paraíba - do Ciclo do Café aos Nossos Dias.
Tipo: Presentation
Palavras-chave: Uso da Terra; Vulnerabilidade; Área de Preservação Permanente; Modelo Numérico do Terreno.
Ano: 2006
URL: http://hdl.handle.net/2315/69

Comparativo entre dados de precipitação obtidos por pluviômetros  Tipping Bucket Rain Gauges e pluviômetro Ville de Paris em Taubaté/SP
Provedor de dados: 25
Autores: Silva, Claudomiro M.; Ferreira, Willian J.; Fisch, Gilberto.
A utilização de equipamentos automáticos para  medidas de precipitação é muito importante para a tomada de decisão em diversas áreas da Ciência, sendo a calibração destes equipamentos em laboratório necessária para a confiabilidade dos dados. Neste trabalho foram comparados os dados de precipitação obtidos a partir de um pluviômetro automático do tipo TBR, conhecido como pluviômetro tipo basculante, e um pluviômetro convencional do tipo Ville de Paris, ambos instalados no posto meteorológico do Departamento de Ciências Agrárias da Universidade de Taubaté.  Dentre os resultados, se pode concluir que a intercomparação das medidas com outros instrumentos é importante para evitar erros sistemáticos e há necessidade de investimentos nas atividades de calibração...
Tipo: Presentation
Palavras-chave: Calibração; Comparativo; Chuva.
Ano: 2011
URL: http://hdl.handle.net/2315/160

AMIS, The Article Minimum Information Standard
Provedor de dados: 17
Autores: Delphine Dauga.
The curation process is significantly slowed down by missing information in the articles analyzed (for example, the identity of the clones used to generate ISH probes, the precise sequences tested in reporter assays, etc..). To help authors ensure in the future that necessary information is present in their article, we defined the Article Minimum Information Standard (AMIS) guidelines. This standard describes for each experiment the mandatory information that should be mentioned in literature articles to facilitate the curation process. These guidelines extend the minimal information defined by the MISFISHIE format (Deutsch at al. 2008, _Nature Biotechnology_). This standard was deduced from the ANISEED curation pipeline (Tassy, Dauga, Daian, Sobral et al....
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5054/version/1

Mizoribin as a inhibitor for leukocyte immunoglobulin receptor sub family A member3
Provedor de dados: 17
Autores: Varala Sravani; I Vani Priyadarshini; Amineni Umamaheswari.
The Leukocyte Immunoglobulin-like Receptors (LILRs) are a family of receptors that was broadly expressed on all leukocytes and have the ability to regulate their function. The increased levels of human LILRA3 in rheumatoid arthritis patients leads to stroke. In quest of designing novel inhibitors against LILRA3 an accurate homology model for the protein was based on crystal structures of 1GOX and 3P2T using Modeller 9V9. The use of multiple templates for structure prediction led us to propose a structure comprising all 439 amino acids of human LILRA3 for the first time.  The best model was selected based on GA341 and DOPE score and further assessed through ProSA and PROCHECK. The validated structure was subjected to CASTp analysis ligand binding site...
Tipo: Presentation
Palavras-chave: Bioinformatics; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6532/version/1

Ontology-based Assisted Curation of Biomedical Data
Provedor de dados: 17
Autores: Conrad Plake.
Manual curation of biomedical data is highly accurate but time consuming, and does not scale with the ever increasing growth of biomedical literature. Text mining as a high-throughput computational technique scales well but requires human expertise to produce highly accurate results. Ontologies can help organizing large quantities of unstructured information. Here we present three systems, namely GoGene, GoPubMed and GoWeb, employing biomedical ontologies and show how they can assist manual curation of biomedical data.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;GoGene associates all genes from different model organisms to concepts of the Gene Ontology (GO) and the Medical Subject Headings (MeSH). The hierarchical structures of both terminologies support clustering...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3122/version/1

Towards an Ontological Representation of Resistance: The Case of MRSa
Provedor de dados: 17
Autores: Albert Goldfain; Lindsay G. Cowell; Barry Smith.
This paper addresses a family of issues surrounding the biological phenomenon of resistance and its representation in realist ontologies. Resistance terms from various existing ontologies are examined and found to be either overly narrow, inconsistent, or&amp;#xd;&amp;#xa;otherwise problematic. We propose a more coherent ontological representation using the antibiotic resistance in Methicillin-Resistant _Staphylococcus aureus_ (MRSa) as a case study.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3475/version/1

CASIMIR &amp;#x26; ENFIN
Provedor de dados: 17
Autores: John Hancock.
I review the development of draft database registries in the CASIMIR and ENFIN projects and the development of the CASIMIR Database Description Framework.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6158/version/1

Integration of Co-expression Networks for Gene Clustering
Provedor de dados: 17
Autores: Malay Bhattacharyya; Sanghamitra Bandyopadhyay.
Simultaneous overexpression or underexpression of multiple genes, used in various forms as probes in the high-throughput microarray experiments, facilitates the identification of their underlying functional proximity. This kind of functional associativity (or conversely the separability) between the genes can be represented proficiently using co-expression networks. The extensive repository of diversified microarray data encounters a recent problem of multi-experimental data integration for the aforesaid purpose. This paper highlights a novel integration method of  gene co-expression networks, based on the search for their consensus network, derived from diverse microarray experimental data for the purpose of clustering. The proposed methodology avoids the...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2012
URL: http://precedings.nature.com/documents/7126/version/1

Impact of Climate Change on Northeast Monsoon System of India - Role of Siberian Teleconnection
Provedor de dados: 17
Autores: Somnath Jha; Vinay Kumar Sehgal; Ramesh Raghava.
The Northeast monsoon (NEM) precipitation has undergone a significant change in pattern over the last half century. The changing pattern of climatic variables over the moisture source (i.e. west Pacific High) and the heat sink (Siberian High) of the winter monsoon dynamics over time has caused a shift in the pattern of NEM precipitation over the southern peninsular region of India. There is no significant trend in NEM precipitation in the Indian region whereas the surface temperature has a significantly increasing trend over India during the NEM season. There is no significant trend in outgoing long wave radiation (OLR) of Siberian High (SH) while the west Pacific High (WPH) has a significantly increasing trend in OLR. Surface pressure of both the SH...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/5899/version/1

YeastMed: An XML-Based System for Biological Data Integration of Yeast
Provedor de dados: 17
Autores: Abdelaali Briache; Kamar Marrakchi; Amine Kerzazi; Ismael Navas-Delgado; Jos&amp;#xe9; F. Aldana Montes; Badr Din Rossi Hassani; Khalid Lairini.
A key goal of bioinformatics is to create database systems and software platforms capable of storing and analysing large sets of biological data. Hundreds of biological databases are now available and provide access to huge amount of biological data.  SGD, Yeastract, CYGD-MIPS, BioGrid and PhosphoGrid are five of the most visited databases by the yeast community. These sources provide complementary data on biological entities. Biologists are brought systematically to query these data sources in order to analyse the results of their experiments. Because of the heterogeneity of these sources, querying them separately and then manually combining the returned result is a complex and laborious task. To provide transparent and simultaneous access to these...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5396/version/1

The EuropaBio approach to general surveillance for cultivation of GM crops
Provedor de dados: 17
Autores: Christine  Wandelt; Esteban Alcalde; Katrina Hayter; Gaston  Legris; Beth J. Patterson; Bruno Tinland; Pieter Windels.
The objective of general surveillance is to identify the occurrence of unanticipated adverse effects of GM crops on human health or the environment that were not covered in the environmental risk assessment. EuropaBio is harmonizing an approach to non-hypothesis driven post-market environmental monitoring relating to the cultivation of different GM crops, comprising a farmer questionnaire, existing surveillance systems as well as other data sources. As an unanticipated adverse effect is most likely to occur where the level of environmental exposure is highest, general surveillance focuses on the agricultural environment and those agronomic zones that are representative of commercial GM crop cultivation. The farmer questionnaire is one element of the...
Tipo: Presentation
Palavras-chave: Plant Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4451/version/1

Some Studies on Circadian Rhythm in the Culture of Omphalina Quelet sp. (Basidiomycota, Agaricales) A Mycobiont of an Unidentified Basidiolichen
Provedor de dados: 17
Autores: Jyoti Kalangutkar; Nandkumar Kamat.
This paper reports the discovery of circadian rhythm in Omphalina Quelet, in pure culture under laboratory conditions. The species was collected as a mycobiont from an unidentified basidiolichen.
Tipo: Presentation
Palavras-chave: Developmental Biology; Microbiology; Plant Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4215/version/1

Multi-site precipitation downscaling via an expanded conditional density network
Provedor de dados: 17
Autores: Alex J. Cannon.
Statistical downscaling models are used to estimate weather data at a station or stations based on atmospheric circulation data defined at a coarser resolution, for example gridded outputs from a Global Climate Model (GCM). Downscaled data can be used as inputs to environmental models that require finer-scale climate fields than are currently available from GCMs. Maintaining realistic downscaling relationships between sites and variables is particularly important in hydrological models, as streamflow depends strongly on the spatial distribution of precipitation in a watershed and on interactions with temperature that determine whether precipitation falls as rain or snow. More generally, precipitation is a difficult variable to downscale because of its...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2007
URL: http://precedings.nature.com/documents/446/version/1

Activity of Exoenzymes in Treated Wastewater Irrigated Soils
Provedor de dados: 17
Autores: Elisabeth J&amp;#xfc;schke; Bernd Marschner.
The reuse of reclaimed wastewater for irrigation of agricultural fields greatly influences the activity of soil microorganisms through the input of organic compounds. Due to the production of exoenzymes by microorganisms for the decomposition of substrates it can be assumed that the irrigation with treated wastewater (TWW) has a strong influence on the soil enzyme pool. In this study the activity of ten exoenzymes, which catalyses processes in C, N and P nutrient cycles, were determined in 3 different soils in 0-10, 10-20, 20-30, 30-50, 50-70 and 70-100 cm soil depth. The soils were used for agriculture and irrigated with reclaimed wastewater reused after a secondary treatment step. Additionally a control after freshwater irrigation was studied. Due to the...
Tipo: Presentation
Palavras-chave: Ecology; Microbiology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/6278/version/1

The role of fungi in mediating ecosystem responses to global change
Provedor de dados: 17
Autores: Kathleen K. Treseder.
Background/Question/Methods&amp;#xd;&amp;#xa;In this synthesis of published studies, we address two global change scenarios (global warming and anthropogenic N deposition) in which fungi can form feedbacks on carbon cycling that are counterintuitive to prevailing predictions and models. In each case, a consideration of fungal ecology, physiology, or evolutionary constraints could lead to changes in the sign or magnitude of carbon storage within soils, compared to current predictions. In the case of global warming, the majority of global carbon models that address this issue are parameterized so that decomposition rates increase in response&amp;#xd;&amp;#xa;to warming, and that this increase is sustained in the long-term. Indeed, the majority of field...
Tipo: Presentation
Palavras-chave: Ecology; Microbiology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/5506/version/1

Living dangerously: an orb-weaving spider potentially exploits an ant-acacia mutualism for enemy-free space
Provedor de dados: 17
Autores: John D. Styrsky.
Exploitation of commodities exchanged in mutualistic interactions has been broadly documented, but typically involve the exploitation of a reward rather than a service.  Further, examples of exploiter species are extremely rare in certain groups of animals, such as spiders.  In 2008 and 2009, we investigated the potential exploitation by an orb-weaving spider (Eustala oblonga) of the plant protection services of ants on an ant-defended acacia (Acacia melanocerus) in lowland rainforest in central Panama.  Despite vigorous patrolling of the acacias by the very pugnacious ants (Pseudomyrmex satanicus), we observed the spiders constructing orb webs among the branches at night and resting quietly during the day on the leaves or at the bases of the thorns in...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5196/version/1

Systems Biology Ontology: Update
Provedor de dados: 17
Autores: Nick Juty.
The Systems Biology Ontology (SBO) is composed of hierarchically arranged sets of controlled vocabularies that are commonly used in mathematical modelling, providing an additional layer of semantic information. We present recent developments in SBO, including the ontology&amp;#x27;s OBO Foundry status, its relationship to SBGN, and detail some of the restructuring work that has been undertaken.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5121/version/1

SPARQL Assist Language Neutral Query Composer
Provedor de dados: 17
Autores: Luke McCarthy; Ben Vandervalk; Mark D. Wilkinson.
SPARQL query composition is difficult for the lay-person or even the experienced bioinformatician in cases where the data model is unfamiliar.    Established best-practices and internationalization concerns dictate that semantic web ontologies should use terms with opaque identifiers, further complicating the task.  We present SPARQL Assist: a web application that  addresses these issues by providing context-sensitive type-ahead completion to existing web forms.  Ontological terms are suggested using their labels and descriptions, leveraging existing XML support for internationalization and language-neutrality.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5382/version/1

New checksum functions for Biopython
Provedor de dados: 17
Autores: Sebastian Bassi; Virginia Gonzalez.
Checksum algorithms are used in biological databases for integrity check and identification purposes. CRC64 is the only checksum algorithm already included in Biopython. This work proposes two new implementation of known algorithms (GCG Checksum and SEGUID). There is also an application based on SEGUID: Looking for redundancy between two FASTA files full of protein sequences based only in sequence information, by comparing the SEGUIDs of both files.&amp;#xd;&amp;#xa;The code is shown in the manuscript and may be available at Biopython.org.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/278/version/1

Parameter Estimation for Hidden Markov models with Intractable Likelihoods
Provedor de dados: 17
Autores: Ajay  Jasra; Thomas A. Dean; Sumeetpal  S. Simgh; Gareth W. Peters.
In this talk I consider sequential Monte Carlo (SMC) methods for hidden Markov models. In the scenario for which the conditional density of the observations given the latent state is intractable we give a simple ABC approximation of the model along with some basic SMC algorithms for sampling from the associated filtering distribution. Then, we consider the problem of smoothing, given access to a batch data set. We present a simulation technique which combines forward only smoothing (Del Moral et al, 2011) and particle Markov chain Monte Carlo (Andrieu et al 2010), for an algorithm which scales linearly in the number of particles.
Tipo: Presentation
Palavras-chave: Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5957/version/1

Novel NIR Spectroscopy Correlation Approach to Amino Acid Analysis of Soybean Proteins for  Composition Improvements.  (v.3)
Provedor de dados: 17
Autores: Valentin  Prisecaru; I. C. Baianu.
Amino acid NIR calibrations were developed in our Physical Chemistry of Foods Laboratory of the University of Illinois at Urbana for three selected amino acid groups that include essential amino acids for identified soybean accessions.  Conventional &amp;#x201c;wet chemistry&amp;#x201d; analytical methods are time-consuming and costly.  As a result, soybean breeders and researchers have an imperative need to utilize faster and less expensive methods. NIR Spectroscopy is a rapid and inexpensive method for composition analysis for academia and industry.  Recent advancements in instrumentation design, such as the application of the Diode Array (DA) technique and the Fourier Transform (FT) IR and NIR techniques, have significantly improved overall instrument...
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Developmental Biology; Genetics &amp; Genomics; Immunology; Molecular Cell Biology; Bioinformatics; Earth &amp; Environment; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6231/version/3

Manual annotation of the mouse genome: HAVANA and EUCOMM
Provedor de dados: 17
Autores: Mark Thomas.
The European Conditional Mouse Mutagenesis (EUCOMM) project aims to establish a mutant resource containing up to 13,000 conditional mouse mutations in C57BL/6N embryonic stem cells. As part of this resource, up to 8,000 targeted conditional mutations will be generated for genes that can not be readily trapped by random gene trapping methods. Non-symmetrical critical exons are identified as part of the targeting approach, which when deleted produce a knockout (KO) transcript that is susceptible to nonsensemediated decay (NMD). The success of this approach is dependent on detailed and accurate genome annotation, which is provided by the Human and Vertebrate Analysis and Annotation (HAVANA) group at the Wellcome Trust Sanger Institute. Based on a combination...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3181/version/1

Metabolic Network Representation in SBGN PD: EC and Identity Gate
Provedor de dados: 17
Autores: Alexander Mazein.
This presentations describes proposed changes in SBGN PD that would allow this language to be better adopted for representing metabolic network.
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/4974/version/1

Absolute Aqueous Redox Potentials ( via a new link between aqueous and gaseous properties)
Provedor de dados: 17
Autores: Raji Heyrovska.
The new finding here, that the conventional standard potentials (based on S.H.E.) are linearly dependent on ionization potentials, has yielded the absolute values of aqueous standard potentials.
Tipo: Presentation
Palavras-chave: Chemistry.
Ano: 2009
URL: http://precedings.nature.com/documents/3395/version/1

Recent Use of Behavioral Genetics in Criminal Cases
Provedor de dados: 17
Autores: Nita Farahany.
Human behavioral genetics research has been introduced in the U.S. criminal justice system, and its use will likely become more prevalent in the near future. This presentation will discusses the recent attempts by criminal defendants to introduce genetic predisposition testimony to negate the voluntariness of their conduct, to negate mens rea, to bolster an insanity defense or as mitigating evidence during sentencing. Although courts have thus far limited such testimony, the opinions in these cases demonstrate a likelihood that such evidence will play a larger role in future cases.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch Professor Farahany&amp;#x27;s presentation, please see the &amp;#x22;Google Video...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2565/version/1

The effect of drought and subsequent precipitation pulse on productivity, species composition, and carbon fluxes of the herbaceous understorey in a cork oak woodland
Provedor de dados: 17
Autores: Marjan Jongen; Maria C.  Caldeira; Jo&amp;#xe3;o S.  Pereira.
In the Iberian Peninsula, the cork oak woodlands are of great ecological and socio-economic importance. These savanna-type woodlands are characterized by an herbaceous understorey, dominated by C3 annual species. The productivity and related ecosystem processes of this understorey are highly dependent on timing and magnitude of precipitation events. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Climate change scenarios for the Iberian Peninsula suggest not only increasing air temperatures, but also the possibility of decreasing spring precipitation, accompanied by an increase in the interval between precipitation events, which might cause drought conditions to occur, with more severe effects on productivity and ecosystem processes....
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3706/version/1

Cognitive deficits of schizophrenia: the flower workshop initiative
Provedor de dados: 17
Autores: Maria Alice Ornellas Pereira; Alfredo Pereira Jr.
Advancement of research on the neurobiology of the schizophrenic brain has revealed a complex of factors, from genetic tendencies affecting the development of brain structure to functional impairment caused by defective molecular signaling. Recently, the attention of psychiatrists and mental health professionals has been directed to the presence of cognitive deficits, responsible for most of the obstacles to the social insertion of patients.The schizophrenic person has a difficulty to manage the flux of consciousness in social interactions. We address this difficulty with the Flower Arrangement Workshop, a methodology of Psycho-Social Rehabilitation that reduces the vulnerability of the schizophrenic in the social environment. The workshop was offered...
Tipo: Presentation
Palavras-chave: Neuroscience.
Ano: 2008
URL: http://precedings.nature.com/documents/1497/version/1

Identification of transcription regulation associated proteins in plants and stramenopiles
Provedor de dados: 17
Autores: Diego Mauricio Ria&amp;#xf1;o Pach&amp;#xf3;n; Silvia Restrepo; Bernd Mueller-Roeber; Francisco Buitrago Florez.
The generation of biodiversity is tied to the evolution and re-wiring of gene regulatory networks (GRNs). One component of these GRN are transcription factors and other transcriptional regulators. We have devised a pipeline for the identification of TFs and TRs, exploiting the domain architecture of these proteins. Currently we have a set of rules, representing 138 proteins families, that we have applied to the identification of ~20 different plant species and several species of Stramenopiles, where important plant pathogens are found. Results for plant species are available at http://plntfdb.uniandes.edu.co/; we are now developing a newer interface for Stramenopiles.
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2012
URL: http://precedings.nature.com/documents/7000/version/1

Emerging Trends of Nanotechnology towards Picotechnology: Energy and Biomolecules
Provedor de dados: 17
Autores: Rakesh Sharma; Avdhesh Sharma; Ching J. Chen.
In nature, metal oxide particles display their existence at the level of picomolecules in solution state and bioactive states in the body. We present evidence of picomolar behavior of molecules different than nanomolar behavior of particles. These particles can be encapsulated in polymers and can be functionalized with protein, nucleotides, and drugs to develop as smart intracellular targeting pico-devices. The preparation technique and physiological conditions decide the size and functionality of these pico-carrier devices. Their usable success rate, feasibility and potentials are yet to be proven or we do not know. The major difference between nanodevices and pico-devices is their intermolecular and intramolecular thermodynamics in medium and their...
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry.
Ano: 2010
URL: http://precedings.nature.com/documents/4525/version/1

Capturing lost research
Provedor de dados: 17
Autores: Rebecca Lawrence.
A very significant proportion of valuable research conducted is lost, either after presentation at a meeting or even at the stage of the creation of the initial dataset; _F1000 Posters_ and _F1000 Research_ aim to capture this valuable information.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6175/version/1

Specificity and Evolvability in Eukaryotic Protein Interaction Networks
Provedor de dados: 17
Autores: Pedro Beltrao; Luis Serrano.
Progress in uncovering the protein interaction networks of several species has led to questions of what underlying principles might govern their organization. Few studies have tried to determine the impact of protein interaction network evolution on the observed physiological differences between species. Using comparative genomics and structural information, we show here that eukaryotic species have rewired their interactomes at a fast rate of approximately 10?5 interactions changed per protein pair, per million years of divergence. For Homo sapiens this corresponds to 103 interactions changed per million years. Additionally we find that the specificity of binding strongly determines the interaction turnover and that different biological processes show...
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2007
URL: http://precedings.nature.com/documents/26/version/1

Patterns in soil ammonia-oxidizer response to global change
Provedor de dados: 17
Autores: Kathryn M. Docherty; Brendan Bohannan; Audrey Niboyet; Xavier LeRoux.
Background/Question/Methods&amp;#xd;&amp;#xa;The Domains Archaea and Bacteria contain the vast majority of Earth&amp;#x2019;s biodiversity and biomass, and their members play critical, often exclusive, roles in many biogeochemical cycles and ecosystem services. Human-induced global change, particularly with respect to increased nitrogen deposition, has the potential to drastically alter how soil nitrifying communities perform their biogeochemical function. Additionally, multi-factor global change can alter how microbial communities interact with each other and with the associated plant communities. This study, performed in the context of the long-term Jasper Ridge Global Change Experiment (JRGCE) in a California grassland ecosystem, examines how...
Tipo: Presentation
Palavras-chave: Ecology; Microbiology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/5508/version/1

Little cost of injury to growth and development of damselflies
Provedor de dados: 17
Autores: Timothy M. Sesterhenn; Philip H. Crowley.
*_Background:_*&amp;#xd;&amp;#xa;Damaged or missing appendages are a common problem in numerous vertebrate and invertebrate taxa and can negatively affect many aspects of life: mobility, foraging, predator avoidance, growth, and development have all been shown to suffer.  Many animals use autotomy to survive a predation attempt but suffer diminished performance until the missing appendage heals or regenerates.  Animals that regenerate face an extra problem, as they must re-allocate resources away from growth and development in order to regrow their missing parts.  We examined the effect of appendage loss on the growth and development of the damselfly Ischnura posita.  Damselfly larvae have three caudal lamellae, external gills that can be autotomized and...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3612/version/1

The Networked Naturalist: Mobile phone data collection for citizen science and education
Provedor de dados: 17
Autores: Eric Graham.
*Background/Question/Methods*&amp;#xd;&amp;#xa;Citizen science projects engage individual volunteers or groups to observe, measure, and contribute data to scientific studies. CENS is building a collection of mobile phone and web-based tools to make the citizen scientist experience more engaging and flexible.  CENS is an NSF-funded Information and Technology Center that employs graduate students from Computer Science and Electrical Engineering at UCLA to create open-source software that is environmentally and socially responsible.  The overarching goal of the Networked Naturalist project is to enhance participatory learning experiences through citizen science campaigns and help transform the associated learning process.  We are collaborating with national...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5198/version/1

Overview of BioSharing
Provedor de dados: 17
Autores: Susanna-Assunta Sansone.
Research communities, funding agencies, and journals participate in the development of reporting standards for the bioscience domain to ensure that shared experiments are reported with enough information to be comprehensible and (in principle) reproducible, compared or integrated (Field, Sansone et al., Science, 2009). Similar trends in both the regulatory arena and commercial science.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Proliferation of standards is a positive sign of stakeholders&amp;#x2019; engagement, but how much do we know about these standards? Which ones are mature and stable enough to use or recommend? Which tools and databases implement which standard? Etc...&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The BioSharing catalogue (www.biosharing.org) aims...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6151/version/1

Commonness and rarity of species: Does species&amp;#x27; rank influence contribution to ecosystem function?
Provedor de dados: 17
Autores: Meha Jain; Case Prager; Dan Flynn; Caroline Devan; Georgia Hart; Farshid Ahrestani; Dan Bunker; Matt Palmer; Sean Smukler; Jason Sircely; Shahid Naeem.
Across the globe, biodiversity loss is occurring at an unprecedented rate. Rare species are especially susceptible to extinction, given that they typically have small population sizes and restricted geographic ranges, are less adaptable to disturbances, and are greater habitat specialists. However, while rare species may be prone to extinction, it remains unclear whether the loss of rare species is important to ecosystem function. In addition, it is important to consider the way in which rarity is defined, given that there are multiple definitions of rarity based on a species&amp;#x27; geographic range, habitat specificity, and abundance in a community. Therefore, to better understand the contribution of rare species to community function, our study has...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5243/version/1

Finding Bicliques in Digraphs: Application into Viral-host Protein Interactome
Provedor de dados: 17
Autores: Malay Bhattacharyya; Sanghamitra Bandyopadhyay; Ujjwal Maulik.
We provide the first formalization true to the best of our knowledge to the problem of finding bicliques in a directed graph. The problem is addressed employing a two-stage approach based on an existing biclustering algorithm. This novel problem is useful in several biological applications of which we focus only on analyzing the viral-host protein interaction graphs. Strong and significant bicliques of HIV-1 and human proteins are derived using the proposed methodology, which provides insights into some novel regulatory functionalities in case of the acute immunodeficiency syndrome in human.
Tipo: Presentation
Palavras-chave: Immunology; Bioinformatics.
Ano: 2012
URL: http://precedings.nature.com/documents/7148/version/1

OntoFox:
Provedor de dados: 17
Autores: Zuoshuang Xiang; Yongqun He.
OntoFox (&amp;#x22;http://ontofox.hegroup.org/&amp;#x22;:http://ontofox.hegroup.org/) is a web server that facilitates ontology development by automatically fetching ontology terms and their annotations from existing ontologies and saving the results in importable RDF/OWL format. OntoFox is developed based on the MIREOT principle. Currently OntoFox can fetch ontology annotations from &amp;#x3e;10 existing ontologies. OntoFox provides an efficient approach to promote ontology sharing and interoperability.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3528/version/1

Integration of microbial communities into large-scale ecosystem models
Provedor de dados: 17
Autores: Steven D. Allison.
*Background/Question/Methods*&amp;#xd;&amp;#xa;Micro-organisms, including Bacteria, Archaea, and Fungi, control major processes throughout the Earth system. Recent advances in microbial ecology and microbiology have revealed an astounding level of genetic and metabolic diversity in microbial communities. However, a framework for interpreting the meaning of this diversity has lagged behind the initial discoveries. Microbial communities have yet to be included explicitly in any major biogeochemical models in terrestrial ecosystems, and have only recently broken into ocean models. Although simplification of microbial communities is essential in complex systems, omission of community parameters may seriously compromise model predictions of biogeochemical...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3633/version/1

The Gene Ontology&amp;#x27;s Reference Genome Project: &amp;#xb;A Unified Framework for Functional Annotation across Species
Provedor de dados: 17
Autores: Pascale Gaudet; Reference Genome Group.
Complete functional annotation of genomes is a powerful tool for researchers; however, such annotation is a time-consuming task limited by the availability of experimental data. The function of genes for which there is no experimental data can often be predicted via comparison to related, annotated sequences of known function. We describe here the Reference Genome project, an effort from the Gene Ontology (GO) Consortium to fully annotate twelve genomes to rigorous standards: human, plus eleven organisms that are important models in biomedical research, including mouse, fly, zebrafish, yeast and _E. coli_. To achieve this, we examine existing experimentally based annotations in a phylogenetic context in order to infer the function(s) of ancestral proteins...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3150/version/1

Changes in Scholarly Communication and the Potential Impact on Biocuration
Provedor de dados: 17
Autores: Philip Bourne.
Open access in particular and changes in on-line scholarship have the potential to impact biocuration which often involves translating information currently read in papers to knowledge that is found in a variety of biological resources. The implication of these changes in scholarly communication to the biocuration process will be discussed with references to our work and that of others.&amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Molecular Cell Biology; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3229/version/1

Progress report: SBML  Level 3 package FBA
Provedor de dados: 17
Autores: Brett G. Olivier; Frank T. Bergmann.
The SBML Level 3 &amp;#x22;FBA&amp;#x22; package is a proposal for an extension to the current Level 3 Core specification that allows for the description and annotation of constraint based models.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;This allows one to e.g. store information related to flux balance analysis in SBML Level 3 models.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5033/version/1

Overcoming the Ontology Enrichment Bottleneck with Quick Term Templates
Provedor de dados: 17
Autores: Bjoern Peters; Alan Ruttenberg; Jason Greenbaum; Melanie Courtot; Ryan Brinkman; Patricia Whetzel; Daniel Schober; Susanna Assunta Sansone; Richard Scheuerman; Philippe Rocca-Serra.
The developers of the Ontology of Biomedical Investigations (OBI) primarily use Prot&amp;#xe9;g&amp;#xe9; for editing. However, adding many classes with similar patterns of logical definition is time consuming, error prone, and requires the editor to have some expertise in OWL. Therefore, the process is poorly suited for a large number of domain experts who have limited experience Prot&amp;#xe9;g&amp;#xe9; and ontology development. We have developed a procedure to ease this task and allow such domain experts to add terms to the ontology in a way that both effectively includes complex logical definitions yet requires minimal manual intervention by OBI developers. The procedure is based on editing a Quick Term Template in a spreadsheet format which is...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3970/version/1

Hierarchical Model Composition updates
Provedor de dados: 17
Autores: Lucian Smith.
A summary of the status of the hierarchical model composition package for SBML Level 3, and of its current implementation.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6402/version/1

1. MIRIAM Identifiers and Resources / 2. Existing Identifier Schemes
Provedor de dados: 17
Autores: Nick  Juty; Camille Laibe; Nicolas Le Novere.
(1) An overview of the MIRIAM identifier scheme is presented, together with a description of the supporting tools and resources which allow its use as a robust cross-referencing framework.&amp;#xd;&amp;#xa;(2) An overview of existing identifier schemes within the life sciences is presented, describing the status of each scheme, the prerequisites that a user must meet to use them, and their limitations.
Tipo: Presentation
Palavras-chave: Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6154/version/1

F1000 and data publishing
Provedor de dados: 17
Autores: Rebecca Lawrence.
Utility of the BioSharing standards and the BioDBCore registry in F1000 journal publishing.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6172/version/1

SBML Level 3 Brief Update
Provedor de dados: 17
Autores: Michael Hucka.
SBML is a machine-readable model representation language for software tools in computational systems biology. By supporting SBML as an input/output format, different tools can all operate on an identical representation of a model, removing opportunities for translation errors and assuring a common starting point for analyses and simulations.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The evolution of SBML continues. The latest iteration is SBML Level 3, a modular language consisting of a Core and optional &amp;#x22;packages&amp;#x22; that add topic-specific features to the Core to support more specialized models and application areas.  In this presentation, I provide a very brief overview of SBML Level 3 activity areas.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5011/version/2

Pressure buildup during CO2 injection in brine aquifers using the Forchheimer equation
Provedor de dados: 17
Autores: Simon A. Mathias; Paul E. Hardisty; Mark R. Trudell; Robert W. Zimmerman.
If geo-sequestration of CO2 is to be employed as a key emissions reduction method in the global effort to mitigate climate change, simple yet robust screening of the risks of disposal in brine aquifers will be needed. There has been significant development of simple analytical and semi-analytical techniques to support screening analysis and performance assessment for potential carbon sequestration sites. These techniques have generally been used to estimate the size of CO2 plumes for the purpose of leakage rate estimation. A common assumption has been that both the fluids and the geological formation are incompressible. Consequently, calculation of pressure distribution requires the specification of an arbitrary radius of influence. In this talk, a new...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2634/version/1

Assisting natural forest regeneration in Northern Ethiopia: one measure is not enough
Provedor de dados: 17
Autores: Raf Aerts; Eva November; Martin Hermy; Jozef Deckers; Mitiku Haile; Bart Muys.
Management strategies aimed at rehabilitating degraded and cleared forests often rely on temporary or permanent exclusion of herbivores (wild animals, livestock or both).  But in many cases, this simple management technique is not sufficient to induce ecosystem restoration: many negative effects keep the ecosystem in a suboptimal, low biomass state.  The presence of such stable states requires restoration measures to act on multiple stress factors simultaneously.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Compensating for all limiting factors is neither practically nor economically feasible.  But detailed knowledge about the autoecology of tree species &amp;#x2013; i.e. their site requirements, regeneration strategies and recruitment dynamics &amp;#x2013; may be...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment; Plant Biology.
Ano: 2008
URL: http://precedings.nature.com/documents/2437/version/1

Process Makna - A Semantic Wiki for Scientific Workflows
Provedor de dados: 17
Autores: Adrian Paschke; Zhili Zhao.
Virtual e-Science infrastructures supporting Web-based scientific workflows are an example for knowledge-intensive collaborative and weakly-structured processes where the interaction with the human scientists during process execution plays a central role. In this paper we propose the lightweight dynamic user-friendly interaction with humans during execution of scientific workflows via the low-barrier approach of Semantic Wikis as an intuitive interface for non-technical scientists. Our Process Makna Semantic Wiki system is a novel combination of a business process management system adapted for scientific workflows with a Corporate Semantic Web Wiki user interface supporting knowledge intensive human interaction tasks during scientific workflow execution.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5633/version/1

Data Basin Climate Center: sharing and manipulating spatial information on the web
Provedor de dados: 17
Autores: Dominique Bachelet; James Strittholt; Tosha Comendant.
Monitoring datasets is essential to detect changes that are occurring and identify thresholds that cause them, but scientists around the world are now generating large volumes of data that vary in quality, format, supporting documentation, and accessibility. Moreover, diverse models are being run at various spatial and temporal scales to try and understand past climate variability and its impacts, generate future climate and land use scenarios, and project potential future impacts to the planet. Conservation practitioners and land managers are struggling to synthesize this wealth of information, identify relevant and usable datasets, and translate evolving science results into on-the-ground climate-aware strategies.&amp;#xd;&amp;#xa;In partnership with...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/5256/version/1

Text mining for Swiss-Prot curation: A story of success and failure
Provedor de dados: 17
Autores: Anne-Lise Veuthey; Violaine Pillet; Yum Lina Yip; Patrick Ruch.
A text mining group has been set up at the Swiss Institute of Bioinformatics, with objective to develop and adapt information retrieval and extraction tools to help Swiss-Prot curators in their daily annotation work.  After over 7 year activities, this group has gathered a significant amount of experience about the need in text mining for biocuration.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The first observation we made is that there is no &amp;#x201c;in-a-box&amp;#x201d; solution which can satisfy every needs. Each curator has his/her own strategy to find information from the literature and none of the existing information retrieval systems is able to compete with it, more for reason of habits than for reason of performance. Second observation: to be...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3166/version/1

Comparing and Explaining Public Acceptance Of Ecological Forestry in Tasmania and the U.S. Pacific Northwest
Provedor de dados: 17
Autores: Robert Ribe; Rebecca Ford; Kath Williams.
Major controversies have erupted in recent years about extensive and intensive timber harvesting programs in Tasmania and the U.S. Pacific Northwest.  These conflicts have centered on ecological impacts and both regions have responded by adopting similar programs of &amp;#x201c;ecological forestry.&amp;#x201d;  Both programs emphasize the retention of varying amounts of trees in aggregated or dispersed patterns within harvests, and seek to &amp;#x201c;life boat&amp;#x201d; mature-forest habitat functions across some harvest prescriptions.  Are these programs garnering similar public acceptance?  Do people with similar ideologies judge the acceptability of forests similarly in both regions?  Do perceptions differ between regions due to differences in...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3744/version/1

Current State of JUMMP
Provedor de dados: 17
Autores: Martin Gr&amp;#xe4;&amp;#xdf;lin.
In computational biology there is a strong need to exchange quantitative models of biological processes in a standardized way. For storing and retrieving peer-reviewed models the BioModels Database has been available for several years. But at the moment there is no tool available to bring a model from development in the lab directly to the peer-reviewed online resource.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The JUMMP (JUst a Model Management Platform) project aims at providing a generic model management platform for any standardized model file. Through a well-elaborated security layer models can be developed and shared privately and later on be made available to the curation process and the broader community. Each change to a model is recorded in a version...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6371/version/1

H-InvDB: A Comprehensive Annotation Resource For Human Transcriptome
Provedor de dados: 17
Autores: Chisato Yamasaki; Jun-ichi Takeda; Takuya Habara; Makoto Ogawa; Akiko Noda; Ryuichi Sakate; Katsuhiko Murakami; Tadashi Imanishi; Takashi Gojobori.
H-Invitational Database (H-InvDB: &amp;#x22;http://www.h-invitational.jp/&amp;#x22;:http://www.h-invitational.jp/) is a comprehensive annotation resource for human transcriptome. By extensive analyses of all human transcripts, we provide curated annotations of human genes, transcripts and proteins that include gene structures, alternative splicing isoforms, non-coding functional RNAs, protein functions, functional domains, sub-cellular localizations, metabolic pathways, protein 3D structure, genetic polymorphisms, relation with diseases, gene expression profiling, molecular evolutionary features, protein-protein interactions (PPIs) and gene families/groups.  The latest release of H-InvDB (release 7.0) provides annotation for 296,912 human transcripts in...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5272/version/1

SBRML Interoperability
Provedor de dados: 17
Autores: Frank T. Bergmann.
This presentation summarizes an initial meeting of SED-ML and SBRML editors in order to facilitate reuse and sharing of components of each language.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6329/version/1

Extending libSedML to support CellML models
Provedor de dados: 17
Autores: David Nickerson; Dongxue Amy You.
libSedML is a collection of libraries and tools developed in support of the Simulation Experiment Markup Language (&amp;#x22;SED-ML&amp;#x22;:http://sed-ml.org/). &amp;#x22;libSedML&amp;#x22;:http://libsedml.sourceforge.net/ is implemented in C# and provides libraries for processing SED-ML documents and for running the numerical simulations required for the encoded simulation experiment(s). SED-ML supports models encoded in any encoding format, although predominantly expected to be an XML based encoding. To date, however, libSedML has only supported performing simulations using models encoded in the Systems Biology Markup Language (&amp;#x22;SBML&amp;#x22;:http://sbml.org/). The presented project looked at using the &amp;#x22;CellML...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5897/version/1

COMBINE - What it is, what it could be
Provedor de dados: 17
Autores: Nicolas Le Novere.
The &amp;#x27;COmputational Modeling in BIology&amp;#x27; NEtwork (COMBINE) is an initiative to coordinate the development of the various community standards and formats for computational models, initially in Systems Biology and related fields. By doing so, it is expected that the federated projects will develop a set of interoperable and non-overlapping standards covering all the aspects of modeling in biology.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Building on the experience of mature projects, which already have stable specifications, software support, user-base and community governance, COMBINE will help foster or support fledging efforts aimed at filling gaps or new needs. As those efforts mature, they may become part of the core set of COMBINE...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6332/version/1

Ontology-&amp;#xad;based Tools to Enhance the Curation Workflow
Provedor de dados: 17
Autores: Trish Whetzel.
In order to effectively search, retrieve, and analyze data oftentimes it is curated and tagged with ontology terms.  However, the amount of effort to curate the existing set of data resources is beyond the limits of purely manual curation.  We present three ontology-based tools developed by the National Center for Biomedical Ontology to enhance the curation workflow: Ontology Widgets, Notes, and the Annotator.  The Ontology Widgets provide a mechanism to use ontologies in Web-based forms without the need to locally parse and store the ontology.  The widgets provide a variety of functionality including term autocompletion and ontology visualization.  The Ontology Widgets are implemented for all BioPortal ontologies, including those from the OBO Foundry and...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5213/version/1

Study Of Phenothiazine On p53 Core Domain Mutant Y220C: Finding The Anti-tumor Activity Of Phenothiazine
Provedor de dados: 17
Autores: Asif Husain Naqvi; Hardik H. Sheth; Vijay Kumar; Suchindran H S; Vivek Gupta.
The tumor suppressor protein p53 is a transcription factor that plays a key role in the prevention of cancer development. The p53 cancer mutation Y220C induces formation of a cavity on the protein&amp;#x27;s surface that can accommodate stabilizing small molecules. We have attempted with the help of virtual screening and molecular docking approach using Lamarckian Genetic Algorithm to elucidate the extent of specificity of p53 cancer mutation Y220C towards different class of Phenothiazines (an anti-cancer agent). &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The 393 residue p53 tumor suppressor protein exists in a dynamic equilibrium to form homotetramers. Each chain comprises several functional domains. The N terminal part of the protein consists of the...
Tipo: Presentation
Palavras-chave: Cancer; Pharmacology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6135/version/1

Publishing Interactive Articles: Integrating Journals And Biological Databases
Provedor de dados: 17
Autores: Karen Yook; Arun  Rangarajan; Hans-Michael Muller; Paul Sternberg; Tracey DePellegrin-Connelly; Tim Schedl; Mike Cherry; William  Gelbart; Juancarlos Chan; Stephen  Haenel; Lolly  Otis; Sharon Faelten; Marek S. Skrzypek; Steven Marygold.
In collaboration with the journal GENETICS, we&amp;#x27;ve developed and launched a pipeline by which interactive full-text HTML/PDF journal articles are published with named entities linked to corresponding resource pages in &amp;#x22;WormBase&amp;#x22;:http://www.wormbase.org/ (WB). Our interactive articles allow a reader to click on over ten different data type objects (gene, protein, transgene, etc.) and be directed to the relevant webpage. This seamless connection from the article to summaries of data types promotes a deeper level of understanding for the na&amp;#xef;ve reader, and incisive evaluation for the sophisticated reader. Further, this collaboration allows us to identify and collect information before the publication of the article. The...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5146/version/1

Population development of beet cyst nematodes and their damage potential to sugar beets under different temperature regimes
Provedor de dados: 17
Autores: Bart Vandenbossche; Bj&amp;#xf6;rn Niere; Stefan Vidal.
_Heterodera schachtii_, the white beet cyst nematode, is considered as one of the most important nematode pests on sugar beet and is present in most sugar-beet growing areas. The yellow beet cyst nematode, _Heterodera betae_, is less prevalent but has also been found damaging beet crops. However, knowledge about the damage potential and population dynamics of the yellow beet cyst nematode is limited. The amount of damage inflicted by nematodes is dependent on different factors. An important factor influencing the sugar beet yield decline by beet cyst nematodes is the soil temperature. Relationships between soil temperature, _H. schachtii_ population densities and sugar beet yields have been reported previously. Until present, most studies have been...
Tipo: Presentation
Palavras-chave: Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5744/version/1

SBML layout and render news
Provedor de dados: 17
Autores: Ralph Gauges.
This presentation gives a short overview on the layout and render extension to SBML and on recent software updates we did that support those two extensions.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5117/version/1

Is your phylogeny informative? Measuring the power of comparative methods
Provedor de dados: 17
Autores: Peter Ralph; Graham Coop; Carl Boettiger.
Phylogenetic comparative methods have become all but ubiquitous in only a few decades, forcing us to reconsider if information from a phylogenetic tree can justify the results. Existing approaches to this question have been inadequate and do not scale with tree size or the ability to resolve branches. For instance, selection between phylogenetic models typically based on information criteria fails to adequately reflect this uncertainty, and can lead to preference for arbitrarily complicated models. Common measures of phylogenetic signal tend to characterize the goodness-of-fit of a Brownian motion model to the data, rather than indicate whether the data is sufficient to confidently distinguish between different hypotheses. We present a Monte Carlo based...
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6453/version/1

SBML Level 3 Brief Update
Provedor de dados: 17
Autores: Michael Hucka.
SBML is a machine-readable model representation language for software tools in computational systems biology. By supporting SBML as an input/output format, different tools can all operate on an identical representation of a model, removing opportunities for translation errors and assuring a common starting point for analyses and simulations.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The evolution of SBML continues. The latest iteration is SBML Level 3, a modular language consisting of a Core and optional &amp;#x22;packages&amp;#x22; that add topic-specific features to the Core to support more specialized models and application areas.  In this presentation, I provide a very brief overview of SBML Level 3 activity areas.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5011/version/1

SBFC - The Systems Biology Format Converter Framework
Provedor de dados: 17
Autores: Martina Kutmon; Nicolas Rodriguez.
The System Biology Format Converter (SBFC) aims is to provide a generic framework that potentially allows any conversion between two formats. Interoperability between formats is a recurring issue in Systems Biology. Although there are various tools available to convert models from one format to another, most of them have been independently developed and cannot easily be combined, specially to provide support for more formats. The framework is written in Java and can be used as a standalone executable.  Recently a prototype has been developed with OSGi to achieve a more modular framework structure. This is a collaborative project and we hope that developers will provide support for more formats by creating new modules. SBFC allows anyone to easily add new...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6370/version/1

Multidimensional Analysis of Snow Cover Data in South Dakota Diversity of Landscapes
Provedor de dados: 17
Autores: Boris Shmagin; Carol Johnston.
Snow distribution in SD was studied with Factor Analysis (FA) of monthly total snowfall [in]. The long-term data obtained from the High Plains Regional Climate Center were used for the territory of South Dakota. The perspective for creating an Atlas of Climate and Water Resources for SD directed this study of total monthly snowfall with connection to landscape diversity.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The initial matrix {Xn*p} where n is number of stations and p is number of variables of monthly average for period of observations. The maximum number of stations n with mutual interval of observations for SD is equal 93 (n=93). These stations have mutual time interval of 18 years observations (1952-53 &amp;#x2013; 1969-70). Total monthly snowfall has...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2445/version/1

Better Analysis, Better Acceptance &amp;#x2010;Take up the Challenge of Publishing in Bioinformatics
Provedor de dados: 17
Autores: Malay Bhattacharyya.
This presentation teaches the novice in bioinformatics research to publish quality analysis in good venues.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2012
URL: http://precedings.nature.com/documents/7124/version/1

Ecological dynamics and the basis of sympatric phenotypic diversification
Provedor de dados: 17
Autores: Mario  Pineda-Krch; Richard Svanb&amp;#xe4;ck; Michael Doebeli.
Theoretical and empirical studies are showing evidence in support of evolutionary branching and sympatric speciation due to frequency&amp;#x2010;dependent competition. However, phenotypic diversification due to underlying genetic diversification is only one possible evolutionary response to disruptive selection. Another potentially general response is phenotypic diversification in the form of phenotypic plasticity. It has been suggested that genetic variation is favored in stable environments, whereas phenotypic plasticity is favored in unstable and fluctuating environments. We investigate the &amp;#x201c;competition&amp;#x201d; between the processes of evolutionary branching and the evolution of phenotypic plasticity in a predator&amp;#x2010;prey model...
Tipo: Presentation
Palavras-chave: Ecology; Evolutionary Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/3672/version/1

Using the Campus as a Teaching and Research Tool&amp;#xb;:  opportunities for ecologists to link to campus sustainability efforts
Provedor de dados: 17
Autores: Suzanne Savanick Hansen.
Campus sustainability projects offer opportunities to link campus operations with academics. For ecologists, these links can include building upon urban long term ecological research such as urban nitrogen budgeting.  In addition, the campus can serve as a tool to examine local biodiversity, urban storm water, and climate change issues in the classroom.  This presentation will describe how an urban nitrogen budget at the University of Minnesota was developed.  In addition, this presentation will describe how the Sustainability Office and the environmental studies department at Macalester College currently collaborate to develop campus sustainability academic projects.  By linking to campus sustainability projects, ecologists have an opportunity to improve...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/4039/version/1

Ecological correlates of wildlife diseases
Provedor de dados: 17
Autores: Milind Watve; Maithili Jog.
The parasite loads appear to differ widely within and between species of free ranging wild mammals. Using data on fecal propagule densities of 29 species of wild mammals from 20 wild life parks in India we tried to identify the ecological factors that are best predictors of parasite loads. Parasite loads were consistently negatively correlated with predatory pressures at both interspecific and intraspecific levels. Carnivores had higher mean parasite loads and the effect of diet and that of predatory pressure appeared to be independent of each other. No other ecological factors were significantly and consistently associated with fecal parasite loads.
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/4834/version/1

QSAR and Docking Studies of Gallic Acid Derivatives for Anticancer and Immunomodulatory Activity
Provedor de dados: 17
Autores: Dharmendra Kumar Yadav; Feroz Khan; Arvind Singh  Negi.
Immuno-modulation is the process of alteration in immune response due to foreign intrusion of molecules inside the body. In the present communication QSAR and molecular docking studies for immuno-modulatory activity of derivatives of gallic acid were performed. Molecular docking studies showed higher binding affinity with INF&amp;#x3b1;-2, IL-6, and IL-4 receptors. Binding site residues indicate hydrogen bonds formation with gallic acid derivative compounds G-3, G-4, G-5, G-6, G-7 and G-10. Further screening through quantitative structure activity relationship model establishes the immuno-modulatory activity of the compounds G-4, G-7, G-9, G-10, G-12 and G-13. Activity was predicted through a robust statistical model, developed by forward feed multiple...
Tipo: Presentation
Palavras-chave: Biotechnology; Cancer; Chemistry; Pharmacology; Bioinformatics; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6620/version/1

CellML: current status and future directions
Provedor de dados: 17
Autores: David Nickerson.
An overview of the current status of the CellML project and some ideas on where things are heading.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6417/version/1

neXtProt, a new knowledgebase  on human proteins
Provedor de dados: 17
Autores: Lydie Lane.
In September 2008, the UniProt/Swiss-Prot group achieved a major milestone: the first complete manual annotation of what is believed to be the full set of human proteins (derived from ~20&amp;#x27;300 genes). This corpus of data is already quite rich in information pertinent to modern biomolecular medical research, but made us realize how large is the gap in our knowledge of human proteins in terms of functional information as well as protein characterization (PTMs, protein/protein interactions, subcellular locations, etc). This gap resides not only in the available experimental information, but also in the way this information has been stored, which is far from being sufficient to help researchers making sense of what all these human proteins do in our...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5104/version/1

Clays: Colloidal Properties in Nanodomain
Provedor de dados: 17
Autores: Siddhartha S. Mukhopadhyay.
The ever-growing application of clays in nanotechnology rests on fundamental principles of colloid chemistry. They make soils as nature&amp;#x2019;s great electrostatic chemical reactor. Highly anisotropic and often irregular particle shape, broad particle size distribution, different types of charges within the unit cells, heterogeneity of layer charges, pronounced CEC, dis-articulation and flexibility of layers, and different modes of aggregation make clays different from other colloidal materials. Their inseparable association with the genesis of life on Earth and evolutionary diversification of Neoproterozoic life is a safety-belt of nanotechnology. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Nanotechnology promises to be the greatest technological...
Tipo: Presentation
Palavras-chave: Chemistry; Ecology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/5807/version/1

libSBML Status update
Provedor de dados: 17
Autores: Sarah M. Keating.
Overview of current status of libSBML development.
Tipo: Presentation
Palavras-chave: Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6394/version/1

SBGN support in BIOCHAM
Provedor de dados: 17
Autores: Dragana Jovanovska; Fran&amp;#xe7;ois Fages; Sylvain Soliman.
BIOCHAM - BioChemical Abstract Machine is an environment for modeling biological systems and formalizing experimental knowledge. Mainly, it is  composed of:&amp;#xd;&amp;#xa;* a rule-based language for modeling biochemical systems (compatible with SBML)&amp;#xd;&amp;#xa;* several simulators (boolean, differential, stochastic)&amp;#xd;&amp;#xa;* a temporal logic based language to formalize the temporal properties of a biological system and validate models with respect to such specifications,&amp;#xd;&amp;#xa;* unique features for developing/correcting/completing/reducing/coupling models, including the inference of kinetic parameters in high dimension from temporal logic constraints.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;BIOCHAM is presented with a user...
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5189/version/1

OpenCell - Status and plans
Provedor de dados: 17
Autores: Alan Garny.
Update on the current status of OpenCell (&amp;#x22;www.opencell.org&amp;#x22;:http://www.opencell.org) and discussion of our plans for a new version of OpenCell.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5131/version/1

Towards Context Driven Modularization of Large Biomedical Ontologies
Provedor de dados: 17
Autores: Pinar Wennerberg; Sonja S. Zillner; Alexander Cavallaro.
Formal knowledge about human anatomy, radiology or diseases is necessary to support clinical applications such as medical image search. This machine processable knowledge can be acquired from biomedical domain ontologies, which however, are typically very large and complex models.  Thus, their straightforward incorporation into the software applications becomes difficult. In this paper we discuss first ideas on a statistical approach for modularizing large medical ontologies and we prioritize the practical applicability aspect. The underlying assumption is that the application relevant ontology fragments, i.e. modules, can be identified by the statistical analysis of the ontology concepts in the domain corpus. Accordingly, we argue that most frequently...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3523/version/1

The harlequin ladybird _Harmonia axyridis_ &amp;#x2013; Sensory thresholds of the &amp;#x201c;ladybird taint&amp;#x201d; in wine under different processing conditions
Provedor de dados: 17
Autores: Susanne K&amp;#xf6;gel; J&amp;#xfc;rgen Gross; Christoph Hoffmann.
Introduced as a biological control agent in North America and middle Europe the Harlequin Ladybird _Harmonia axyridis_ has spread all over the countries and are capable to become an increasing problem for winegrowers and also households. Due to its preference to overwinter indoors _H. axyridis_ enters private homes and people may have allergic reactions to its odor or bites. During harvests, the beetles feed on grapes and may get crushed with them during processing causing release of hemolymph into the must. The hemolymph of ladybirds contains specific substances which consist mainly of pyrazines like the 3-isopropyl-2-methoxypyrazine. These chemical compounds are responsible for a specific alteration of the smell and taste of wine called...
Tipo: Presentation
Palavras-chave: Chemistry; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5739/version/1

Mummification in a Bitch: A case report
Provedor de dados: 17
Autores: Perumal P; Venkateswaralu B; D.N. Mohanty; Srinibas  Das; Ashok Kumar Barik; P.C. Mishra.
A pug aged 5 years was admitted in the Lyka pet clinic with difficulty in parturition. Breeding history of the dog was collected from the owner. X-ray was conducted which confirmed the presence of foetus. The bitch was manually handled to relieve the Dystocia following intravenous drip of N.S.S. and oxytocin. In the vent of unsuccessful attempt the bitch was surgically operated for C.S. and six fetuses of which four normal and two mummified were relieved. Routine post operative care were undertaken and the bitch recovered normally with out any complication. Photographic recording was also made during the recovery of mummified foetus.
Tipo: Presentation
Palavras-chave: Microbiology; Pharmacology.
Ano: 2012
URL: http://precedings.nature.com/documents/7063/version/1

Enhancing me - hope or hype?
Provedor de dados: 17
Autores: Pete Moore.
Many people talk about human enhancement as if it is about to happen. Some suggest that it already has. To join in the debate you need to distinguish between social, personal and species enhancement. Social and personal are certianly with us - but talk of species enhancement leans more to hype than hope.
Tipo: Presentation
Palavras-chave: Biotechnology; Genetics &amp; Genomics; Neuroscience.
Ano: 2008
URL: http://precedings.nature.com/documents/2139/version/1

Novel NIR Spectroscopy Correlation Approach to Amino Acid Analysis of Soybean Proteins for  Composition Improvements.  (Version 2.0)
Provedor de dados: 17
Autores: Valentin  Prisecaru; I. C. Baianu.
Amino acid NIR calibrations were developed in our Physical Chemistry of Foods Laboratory of the University of Illinois at Urbana for three selected amino acid groups that include essential amino acids for identified soybean accessions.  Conventional &amp;#x201c;wet chemistry&amp;#x201d; analytical methods are time-consuming and costly.  As a result, soybean breeders and researchers have an imperative need to utilize faster and less expensive methods. NIR Spectroscopy is a rapid and inexpensive method for composition analysis for academia and industry.  Recent advancements in instrumentation design, such as the application of the Diode Array (DA) technique and the Fourier Transform (FT) IR and NIR techniques, have significantly improved overall instrument...
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Developmental Biology; Genetics &amp; Genomics; Immunology; Molecular Cell Biology; Bioinformatics; Earth &amp; Environment; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6231/version/2

D2RQ Platform &amp;#x2013; Treating Non-RDF Databases as Virtual RDF Graphs
Provedor de dados: 17
Autores: Radoslaw Oldakowski.
D2RQ is a complete solution to map and expose relational databases as RDF.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5660/version/1

Reading the Secrets of Biological Fluctuations
Provedor de dados: 17
Autores: Carl Boettiger.
I explore tools and applications of the van Kampen expansion of the stochastic master equation in several areas of population biology.  I highlight fluctuation-dissipation and fluctuation-enhancement regimes, using information from noise to help model choice, and examples where noise changes the macroscopic dynamics of a system.
Tipo: Presentation
Palavras-chave: Ecology; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4949/version/1

Assembling the Tree of Life in Europe (AToLE)
Provedor de dados: 17
Autores: Olaf R. P. Bininda-Emonds; Wieslaw  Bogdanowicz; Thomas Borsch; Frederic Delsuc; Alexandre  Hassanin; Ulf Jondelius; Gitte Petersen; Susanne S. Renner; Vincent Savolainen; Ole Seberg; Erik Smets; Alfried Vogler.
A network of scientists under the umbrella of &amp;#x27;Assembling the Tree of Life in Europe (AToLE)&amp;#x27; seeks funding under the FP7-Theme: Cooperation - Environment (including Climate Change and Biodiversity Conservation) programme of the European Commission.&amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Earth &amp; Environment; Evolutionary Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/2891/version/1

Newer Methods of Nanoparticle Synthesis: Nitroimidazole properties with Nanometal oxides in Polymer Cages as Drug-Biomarker Monitors
Provedor de dados: 17
Autores: Rakesh Sharma.
Nitroimidazoles are radiosensitizers and hypoxia detecting chemosensitizers. Intially nitroimidazoles were single dose antibiotic drugs. Recently, nitroimidazole derivatives have emerged as multifunctional &amp;#x201c;drug-biomarker monitors&amp;#x201d; chemical compounds with importance in treatment of tumors, monitoring hypoxia and safer imaging contrast agents to monitor the therapeutic progress.  Additionally, the number of nitroimidazole derivatives is growing and identified their importance as multifunctional nanoparticles. The nanoparticle synthesis scheme of nitroimidazole was proposed as nitroimidazole caged with paramagnetic metal oxide inside polymer coating and labeled with marker radiolebels or biomolecules. We report the step by step...
Tipo: Presentation
Palavras-chave: Biotechnology.
Ano: 2009
URL: http://precedings.nature.com/documents/3952/version/1

Do they or don&amp;#x27;t they? A synthesis of microbial response to environmental change
Provedor de dados: 17
Autores: Teri C. Balser.
Background/Question/Methods&amp;#xd;&amp;#xa;Microbial communities have long been thought to possess infinite plasticity, yet evidence in recent years increasingly indicates compositional resistance to change.&amp;#xd;&amp;#xa;While this discovery may largely be due to the changing nature of soil biological research &amp;#x2013; with its move beyond single-season and single-factor experiments, it nevertheless highlights a critical area in current ecosystem studies and soil microbial ecology. Do they or don&amp;#x27;t they change? When? Under what circumstances? And does it matter?&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Results/Conclusions&amp;#xd;&amp;#xa;In this talk I review microbial community compositional shifts. First I address general microbial response...
Tipo: Presentation
Palavras-chave: Ecology; Microbiology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/5504/version/1

BRIF and Variant Databases
Provedor de dados: 17
Autores: Raymond Dalgleish.
Databases of sequence variation in human genes (LSDBs) are an important resource for biology and medicine. Currently, the measurement of importance is not as objective as it might be and the establishment of impact factors would be of benefit to those who curate LSDBs. Specific issues relating to such databases are discussed.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/5586/version/1

Deterministic individual-based cellular automata modelling of single species population dynamics
Provedor de dados: 17
Autores: Lev Kalmykov; Vyacheslav Kalmykov.
This presentation was created to characterise foundations of cellular automata modelling of single species population dynamics. We show models of single species population growth based on deterministic birth-death-regeneration process and demonstrate a relationship between fecundity rate and population growth rate. Our models provide mechanistic simulation of logistic-like and double logistic-like curves of population growth that is not possible in the classical Verhulst model (logistic growth model). This method is deterministic individual-based and is based on logical &amp;#x201c;if-then&amp;#x201d; statements only. As this method is bottom-up mechanistic and provides a direct visual insight into dynamics of complex systems, we used it to study...
Tipo: Presentation
Palavras-chave: Ecology; Bioinformatics; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6661/version/1

Speciation &amp;#x26; the origin of communities
Provedor de dados: 17
Autores: Philippe Desjardins-Proulx.
Patterns of biodiversity predicted by the neutral theory rely on a simple phenomenological model of speciation. To further investigate the effect of speciation on neutral biodiversity, we define the metacommunity as a system of populations exchanging migrants and use this framework to study allopatric &amp;#x26; parapatric speciation. We find that with realistic mutation rates, our metacommunity model driven by neutral processes cannot support more than a few species. Adding natural selection in the population genetics of speciation increases the number of species in the metacommunity but the level of diversity found in Barro Colorado Island is difficult to reach.
Tipo: Presentation
Palavras-chave: Ecology; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6054/version/1

Standards and infrastructure for managing experimental metadata
Provedor de dados: 17
Autores: Susanna-Assunta Sansone; Philippe Rocca-Serra.
*See also &amp;#x22;related poster&amp;#x22;:http://precedings.nature.com/documents/3144/version/1*&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Today&amp;#x2019;s researchers can perform biological and biomedical studies where the same material is run through a wide range of assays, comprising several technologies such as genomics, transcriptomics, proteomics and metabol/nomics (hereafter referred as &amp;#x2018;omics&amp;#x2019;). To enable others to correctly interpret the complex data sets that result, and the conclusions drawn, it is necessary to provide contextualizing experimental metadata at an appropriate level of granularity.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Standards initiatives normally cater to particular domains. However, several synergistic...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics; Data Standards.
Ano: 2009
URL: http://precedings.nature.com/documents/3145/version/1

Towards a Modelling Ecosystem for Libraries of Modular, Reusable Components
Provedor de dados: 17
Autores: Michael T. Cooling.
CellML 1.1 [1] is an XML-based model exchange protocol with inherent support for modularity.&amp;#xd;&amp;#xa;To assist in answering complex biomedical research questions, we are developing libraries of modular model components that facilitate mathematical model construction. &amp;#xd;&amp;#xa;Stored in the online, publicly accessible CellML Repository [2], the libraries vary from genetic and associated regulatory components for Synthetic Biology [3] to quantifying the Systems Biology of cardiovascular wall mal-adaptation [4,5].&amp;#xd;&amp;#xa; &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Currently however, using the libraries is not as easy as it should be. Here I describe progress towards a modelling ecosystem to encompasses component search and retrieval,...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6392/version/1

The Physical and Social Environment in Kaiser Permanente&amp;#x2019;s Research Program in Genes, Environment and Health
Provedor de dados: 17
Autores: Catherine Schaefer.
Dr. Catherine Schaefer described Kaiser Permanente&amp;#x27;s Research Program on Genes, Environment and Health, which will be a large resource facilitating further studies analyzing the influence of genes and the environment. She described both the goals and the processes of the program in detail.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch Dr. Schaefer&amp;#x2019;s presentation, please see the Panel 3 &amp;#x22;Google Video posting.&amp;#x22;:http://video.google.com/videoplay?docid=-7775076897136846879&amp;#x26;hl=en Panel 3 also features a presentation by Dr. Atul Butte of Stanford University on &amp;#x201c;Linking the Genome and Envirome.&amp;#x201d;
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2651/version/1

Urban development, power relations, and water redistribution as drivers of wetland change in the Tampa Bay Region Socioecosystem
Provedor de dados: 17
Autores: David B. Lewis; Fenda A. Akiwumi; Shawn M. Landry; Rebecca K. Zarger; Mark C. Rains; Susan S. Bell; Thomas L. Crisman; Carl C. Trettin; Kenneth A. Nilsson; Cornelius O. Adjei; Sharon J. Feit; Gina M. Larsen; Ralph B. Perkerson; Paul E. Thurman.
n/a
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/6261/version/1

Identification of small molecule inhibitor of cyclophilin-A using high throughput virtual screening and molecular docking Studies
Provedor de dados: 17
Autores: Pallapotu Navya; I Vani Priyadarshini; Amineni Umamaheswari.
The inhibitors of cyclophilin A (CyPA) have drawn a great deal of attention due to their promising potential as small-molecule therapeutics for the treatment of cardiovascular diseases. This ultimately prompts to explore structural geometries of these inhibitors to obtain insights on next generation CyPA inhibitors through rational drug designing. Herein, 2D similarity search for the seven CyPA inhibitors was performed using Ligand.Info database. Small subsets of 2800 molecules from one million compounds were predicted to have activity against cardiovascular drug target CyPA. The binding strength of 2800 ligands with CyPA was assessed through molecular docking analysis using Schr&amp;#xf6;dinger software 2011. The CyPA co-crystal structure and ligand...
Tipo: Presentation
Palavras-chave: Cancer; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6529/version/1

Gene Curation Software at the Rat Genome Database (RGD)
Provedor de dados: 17
Autores: Stanley J. F. Laulederkind; Mary  Shimoyama; Brad Taylor; Victoria  Petri; Timothy F. Lowry; G. Thomas Hayman; Shur-Jen Wang; Jennifer R. Smith; Rajni Nigam; Jeff De Pons; Weisong Liu; George Kowalski; Melinda R. Dwinell; Diane H. Munzenmaier; Howard J. Jacob.
At model organism databases data is curated for numerous biological categories using various ontologies and vocabularies.  The Rat Genome Database (RGD) uses four different ontologies to standardize annotation information for genes and their associations with disease, phenotypes, and pathways. For manual gene curation this is all done in a single user interface of a web-based annotation tool developed at RGD.  The same interface can be used for the curation of QTLs and strains. The development of the tool has been achieved through a collaboration of curators and software developers.  Features have been tailored to the needs of the curators to allow optimum efficiency of the data entry portion of the curation process.  Annotations using the Gene Ontology,...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5058/version/1

Developing a Text Mining Prototype for the Comparative Toxicogenomics Database Biocuration Process
Provedor de dados: 17
Autores: Thomas C. Wiegers.
Understanding interactions between environmental chemicals and genes provides insights into the mechanisms of chemical action, disease susceptibility, therapeutic drug interactions, and toxicity. The Comparative Toxicogenomics Database (CTD; http://ctd.mdibl.org) is a web-based resource that integrates diverse information for the cross-species analysis of chemical, gene, and disease relationships.  Much of the data contained in CTD is manually gathered by biocurators; CTD integrates data curated manually from over 10,000 scientific documents.  CTD biocurators manually curate chemical-gene and chemical/gene-disease interactions from the scientific literature using controlled vocabularies.  Unfortunately, there are many more scientific documents available...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Pharmacology; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3142/version/1

The Importance of Patents for Scientists
Provedor de dados: 17
Autores: Sue Scott.
Patents have become a hot topic and the subject of much media attention.  If your main source of information about patents is the newspapers, you could be forgiven for having an extremely distorted view of what patents are, what they do, and what benefits and problems are associated with them.   All scientists want to be able to improve the world in some way, whether by contributing in a fundamental way to the fund of human knowledge or by delivering new and valuable technology.  If you are a scientist making inventions, it is increasingly important that you should have an understanding of the importance of patents in the modern world, and should have sufficient understanding of the patent system to make sure that your aims for your inventions are...
Tipo: Presentation
Palavras-chave: Biotechnology; Pharmacology.
Ano: 2008
URL: http://precedings.nature.com/documents/1974/version/1

Signatures of spatial organizations &amp;#x2013; From the universe of proteins to the universe in general
Provedor de dados: 17
Autores: Aditya Mittal.
Pattern generation and recognition in 3-D space have been of wide interest in fields varying from atomic and molecular structures to organization of celestial objects. Our thoughts towards investigating patterns (and elucidation of geometrical rules) followed by a known number of points with specific or specified coordinates are guided by the assumption/belief that there must be some thermodynamic and/or kinetic basis leading to the organization of coordinates of the known points. In terms of biomolecular structures, the DNA double helix is one of the strongest examples of such structures with coordinates of atoms in the phosphate backbone and the side-chains provide a helical geometrical configuration. It needs to be appreciated (and emphasized) that,...
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Molecular Cell Biology; Bioinformatics; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6038/version/1

Antibodies targeting Cancer stem cells, A novel pattern in Immunotherapy
Provedor de dados: 17
Autores: Sarfaraz Alam.
Antibody targeting of cancer is showing clinical and commercial success after deep research and development over the last 3 decades. They have the great potential to deliver long-term cures but a shift in thinking towards a cancer stem cell (CSC) model for tumour development is certain to have an impact on how antibodies are selected and developed, the targets they bind to and the drugs used in combination with them. CSCs have been identified from many human tumours and share many of the characteristics of normal stem cells such as the ability to renew and metabolically or physically protect themselves from xenobiotic and DNA damage. Targeting CSCs could be a strategy to improve the outcome of cancer therapy. Monoclonal antibodies are clinically and...
Tipo: Presentation
Palavras-chave: Cancer; Immunology; Molecular Cell Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/5428/version/1

Psychiatric Genetics: Methods, Findings and Ethical Issues
Provedor de dados: 17
Autores: Kenneth Kendler.
This talk has 4 major sections. First, I review the basic definition of a complex trait, especially as it applies to psychiatric disorders. Second, I outline the 4 basic paradigms of psychiatric genetics: simple genetic epidemiology, advanced genetic epidemiology, gene-finding methods and molecular genetics. Third, I review a few basic facts about psychiatric genetics - the level of heritabilities found for most common disorders and the difficulties the field has had in obtaining replicated evidence for single gene effects. Finally, I briefly review three conceptual/philosophical issues that relate to psychiatric genetics: i) why do people become much more concerned in learning about possible genetic influences on personality or risk for depression than...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2623/version/1

Evaluating restoration success and applying adapative management in the Middle Rio Grande Bosque
Provedor de dados: 17
Autores: Ondrea Hummel; Todd Caplan.
The U.S. Army Corps of Engineers Albuquerque District, in collaboration with various local partners, has been implementing restoration projects in the Albuquerque Reach of the Middle Rio Grande.  These projects have included the removal of the metal jetty jacks, debris, and dense thickets of non-native vegetation (salt cedar, Russian olive, and Siberian elm) that occur in the bosque (riparian forest), creation of wet habitats (such as willow swales and high-flow channels), and revegetation schemes focused on increasing the diversity and quality of wildlife habitat.  The goal of many of these projects is to develop a framework to restore the bosque into a more functional and sustainable ecosystem.  Projects implemented on the ground are being monitored for...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3649/version/1

Can one invasion lead to another? Niche space and the future of Southwestern U.S. riparian zones
Provedor de dados: 17
Autores: Lindsay Reynolds; David Cooper.
Background/Question/Methods: Invasive species are increasingly problematic world-wide. Scientists working to understand why invasive species are successful must first understand the processes of invasion. Invasion facilitation and empty niche exploitation are key processes that have not been well-studied in species rich ecosystems such as riparian areas. In the southwestern United States (U.S.) two prominent invaders of riparian habitats are the exotic woody plant species tamarisk (Tamarix ramosissima, T. chinensis, and their hybrids) and Russian olive (Eleagnus angustifolia). These plants were introduced by humans throughout the southwest around 1900. Both tamarisk and Russian olive have invaded the ephemeral stream system in Canyon de Chelly National...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3842/version/1

The significance of ponds in maintaining biodiversity in an intensively farmed landscape
Provedor de dados: 17
Autores: Margherita  Gioria; John Feehan.
*Background/Question/Methods*&amp;#xd;&amp;#xa;Ponds are amongst the most diverse freshwater habitats and have been recently found to support more species, as well as more uncommon, rare, and threatened species compared to lakes, rivers, and streams. The conservation of ponds represents a cost-effective way of maintaining or enhancing biodiversity, because of the typical small size of pond catchment areas. Moreover, ponds may be effectively used as models systems because of their small size and large number compared to lakes. At present, there is an urgent need to collect data on the ecological quality of freshwater bodies to develop programmes aimed at meeting defined water quality targets by the year 2015, in fulfillment of obligations deriving from the...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3596/version/1

Crossing Disciplinary Boundaries to Understand Human Drivers of Environmental Threats
Provedor de dados: 17
Autores: Eugene A. Rosa; Thomas Dietz.
A wide range of ecological studies affirms the cumulative damage to ecosystem capital and services around the globe.  They also point to the overwhelming role that anthropogenic or human drivers play in global ecological damage.  The MAHB is intended to combine what we know about human drivers of environmental threats with what the social sciences know about changing human behavior and institutions.  A variety of social sciences have taken up the first task of identifying the key human activities&amp;#x2014;at both the local, cumulative level and at the systemic level&amp;#x2014;most responsible for global environmental change.  Considerable progress has been made in our understanding of land use and land cover change, of vulnerability, resilience, and...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5251/version/1

Protein Ontology and Community Curation
Provedor de dados: 17
Autores: Cecilia Arighi.
The Protein Ontology (PRO) is designed as a formal and well-principled Open Biomedical Ontologies (OBO) Foundry ontology for proteins. The components of PRO extend from the classification of proteins, on the basis of evolutionary relationships at the homeomorphic level, to the representation of the multiple protein forms of a gene, such as those resulting from alternative splicing, cleavage and/or post-translational modifications. As an ontology, PRO differs from a database in that it provides description about the protein types and their relationships. In this way PRO can be integrated with or cross-referenced by other ontologies and/or databases. The representation of specific protein entities in PRO allows precise definition of objects in pathways,...
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3169/version/1

Update: MIRIAM Registry and SBO
Provedor de dados: 17
Autores: Nick Juty.
We describe the MIRIAM Registry, which forms a foundation layer database upon which persistent, unambiguous and perennial identifiers of data can be built. We also describe current status and planned improvements to this system, as well as providing an update on the Systems Biology ontology since the last COMBINE meeting in Edinburgh (2010). &amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6405/version/1

Combining systems biology and pharmacokinetics - drug cardiotoxicity assessment
Provedor de dados: 17
Autores: Sebastian Polak.
Cardiotoxicity assessment is a compulsory element of the drug development process required by drug agencies including the FDA and EMA. The risk of fatal ventricular arrhythmia triggered by drugs is the rationale for such requirements. Over the last two decades prolongation of QT interval has been responsible for the withdrawal of several drugs from the market and extensive black box labeling restrictions. Although there are a number of mechanisms by which drugs may lead to QT prolongation, inhibition of the potassium channels encoded by the hERG gene has been a cause in many cases. Thus, it is not surprising that interaction with the hERG channel has become a major pharmacological safety concern. It can be reliably assessed with use of in silico realized...
Tipo: Presentation
Palavras-chave: Pharmacology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5900/version/1

Challenges in Whole-Genome Annotation of Pyrosequenced Fungal Genomes
Provedor de dados: 17
Autores: Alan Kuo; Igor Grigoriev.
Pyrosequencing technologies such as 454/Roche and Solexa/Illumina vastly lower the cost of nucleotide sequencing compared to the traditional Sanger method, and thus promise to greatly expand the number of sequenced eukaryotic genomes. However, the new technologies also bring new challenges such as shorter reads and new kinds and higher rates of sequencing errors, which complicate genome assembly and gene prediction. At JGI we are deploying 454 technology for the sequencing and assembly of ever-larger eukaryotic genomes. Here we describe our first whole-genome annotation of a purely 454 sequenced fungal genome that is larger than a yeast (&amp;#x3e;30 Mbp). The pezizomycotine (filamentous ascomycote) _Aspergillus carbonarius_ belongs to the _Aspergillus_...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3191/version/1

Dissecting the Biological Motherboard (Systems Biology and Beyond)
Provedor de dados: 17
Autores: Abhay Krishna; Ajit Narayanan.
Genome-scale molecular networks, including gene pathways, gene regulatory networks and protein interactions, are central to the investigation of the nascent disciplines of systems biology and bio-complexity. Dissecting these genome-scale molecular networks in its all-possible manifestations is paramount in our quest for a genotype-input phenotype-output application which will also take environment-genome interactions into account.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Machine learning approaches are now increasingly being used for reverse engineering such networks. Our work stresses the importance of a system approach in biological research and how artificial neural networks are at the forefront of Artificial Intelligence techniques that are increasingly...
Tipo: Presentation
Palavras-chave: Ecology; Bioinformatics.
Ano: 2008
URL: http://precedings.nature.com/documents/2003/version/1

SBML Team facilities &amp;#x26; software
Provedor de dados: 17
Autores: Frank T. Bergmann; Sarah M. Keating.
This presentation provides a brief overview of the new SBML online validator and the updates in the SBML Tool Matrix. This presentation ends with an update on the new version of the SBML Toolbox.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6401/version/1

Stir Bar Sorptive Extraction &amp;#x2013; A method for detection of volatiles from potato plants?
Provedor de dados: 17
Autores: Katrin Beyer; Angelika Ziegler; Detlef Ulrich; Kirsten Wei&amp;#xdf;; Ren&amp;#xe9; Gr&amp;#xfc;nwald; Ralf Wilhelm.
The application of Stir Bar Sorptive Extraction (SBSE) as a method for extraction of emitted volatile compounds of potato leaves using GC/MS will be studied. A suitable efficient method shall be developed to describe differences in the spectrum of volatile compounds of potato varieties. It was shown that SBSE yields results similar to other established methods but with less effort. The method will be optimized further. The use of the spectrum of volatile compounds as a parameter for variety assessment (e.g.: plant health, plant protection, biosafety) is planned.
Tipo: Presentation
Palavras-chave: Chemistry; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5736/version/1

Report on the status of SBGN ER and proposed extensions
Provedor de dados: 17
Autores: Nicolas Le Novere.
The Systems Biology Graphical Notation (SBGN) is an effort to standardize the graphical notation used in maps of biochemical and cellular processes studied in systems biology. SBGN is made up of  three orthogonal languages, representing different visions of biological systems. Each language defines a comprehensive set of symbols with precise semantics, together with detailed syntactic rules how maps are to be interpreted. In this presentation I recapitulated why SBGN was developed, and discuss the current state of the Entity Relationships language. I then describe the coming evolutions and the pending issues.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4963/version/1

Nuclear Medicine and Early Discovery of Disease
Provedor de dados: 17
Autores: I. C. Baianu.
There is an urgent need for the early detection of diseases such as Alzheimer&amp;#x2019;s (AD) and Cancers in order to enable their successful treatment. Cancer is the second major cause of death after Heart Disease, and AD is the third major cause of death with major consequences for the society.&amp;#xd;&amp;#xa;Three major Nuclear Medicine techniques that are established for diagnostic and research purposes are: Positron Emission Tomography (PET) CAT/CT and Nuclear Magnetic Resonance Imaging (NMRI/MRI). These nuclear medicine techniques are discussed together with their clinical and research applications to early diagnosis of Alzheimer&amp;#x27;s Disease (AD) and cancers. Novel approaches to early detection and modeling of AD and cancers are then...
Tipo: Presentation
Palavras-chave: Biotechnology; Cancer; Chemistry; Genetics &amp; Genomics; Neuroscience; Pharmacology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6196/version/1

Use of Semantic Technologies - Semantic Chemistry
Provedor de dados: 17
Autores: Alexandru Todor; Adrian Paschke; Stephan Heineke.
Our Chemical e-Science Information Cloud (ChemCloud) &amp;#x2013; a Semantic Web based eScience infrastructure &amp;#x2013; integrates and automates a multitude of databases, tools and services in the domain of chemistry, pharmacy and bio-chemistry available at the Fachinformationszentrum Chemie (FIZ Chemie), at the Freie Universitaet Berlin (FUB), and on the public Web. Based on the approach of the W3C Linked Open Data initiative and the W3C Semantic Web technologies for ontologies and rules it semantically links and integrates knowledge from our W3C HCLS knowledge base hosted at the FUB, our multi-domain knowledge base DBpedia (Deutschland) implemented at FUB, which is extracted from Wikipedia (De) providing a public semantic resource for chemistry, and...
Tipo: Presentation
Palavras-chave: Chemistry.
Ano: 2011
URL: http://precedings.nature.com/documents/5649/version/1

Indigenous ecological knowledge as social capital: How citizen science can help us replenish the bank
Provedor de dados: 17
Autores: Kaberi  Kar Gupta; Madhusudan V. Katti.
*Background/Question/Methods* &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;In our increasingly urban world, indigenous knowledge of local ecology is declining rapidly, because survival in industrialized urban environments does not depend on knowing the details of local flora, fauna, or phenologies. While traditional ecological knowledge has been documented since 1980s, this is has been largely descriptive, e.g., ethnobotany of sacred groves, cultivation practices, or use of medicinal plants. Until recently, conservation biologists and managers of protected areas have followed western models of conservation that exclude local people and often abandon local ecological knowledge. However, many scientific studies of local ecosystems would not have been possible without...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3601/version/1

ABC for Temporally Sampled Genetic Data
Provedor de dados: 17
Autores: Mark A. Beaumont.
ABC for Temporally Sampled Genetic Data
Tipo: Presentation
Palavras-chave: Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5953/version/1

The neurobiology of spontaneous actions and operant learning in Drosophila
Provedor de dados: 17
Autores: Bj&amp;#xf6;rn Brembs.
Learning about the consequences of our actions (operant learning) is one of the major ways in which we learn to understand the world we live in. Despite our recent advances in the neurobiology of learning and memory, this &amp;#x201c;learning-by-doing&amp;#x201d; has largely withstood neurobiological scrutiny. This proposal aims to elucidate the molecular and neurobiological mechanisms of spontaneous behavioral choice and how decision-making is modulated by the consequences of such actions. This research will be done in a genetically amenable model system, the fruit fly Drosophila. We will use state-of-the-art genetic and behavioral techniques to identify the circuitry and molecular processes involved in generating spontaneous turning behavior and its...
Tipo: Presentation
Palavras-chave: Neuroscience.
Ano: 2009
URL: http://precedings.nature.com/documents/2926/version/1

Formal Systems Architectures for Biology
Provedor de dados: 17
Autores: Bradly Alicea.
When the word &amp;#x22;systems&amp;#x22; is used in systems biology, it invokes a variety of assumptions about what defines the subject under investigation, which in turn can lead to divergent research outcomes. We will take the position that systems are defined by their potential organizing and &amp;#x22;control&amp;#x22; mechanisms, which distinguishes complex, living systems from a primordial soup. This will be accomplished by defining and investigating three interesting control motifs in biological systems: dominoes and clocks, futile cycles, and complex feedforward regulation. Additional mechanisms that combine feedback and feedforward mechanisms will also be briefly elaborated upon. Throughout these examples, our focus will be on the connection...
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6369/version/2

PharmGKB:  Capturing knowledge to catalyze pharmacogenomics research
Provedor de dados: 17
Autores: Russ B. Altman.
This is a powerpoint presentation made initially at the Cold Spring Harbor meeting on Pharmacogenomics, November 2006.  It discusses the PharmGKB (http://www.pharmgkb.org/) and how we are building a pipeline for annotation of knowledge.  In particular, we are focusing on pathway knowledge, &amp;#x22;Very important Pharmacogene&amp;#x22; annotations, and curation of the pharmacogenomics literature.  We are building an ontology-based system to capture and aggregate knowledge, for use by our curators.
Tipo: Presentation
Palavras-chave: Biotechnology; Genetics &amp; Genomics; Pharmacology.
Ano: 2006
URL: http://precedings.nature.com/documents/8/version/1

Post Market Monitoring of GM Herbicide-Tolerant Crops
Provedor de dados: 17
Autores: Alan M. Dewar.
As soon as humans adopted agriculture as the principle means of feeding themselves, they have had an effect on the environment, and by implication, also on biodiversity. It is not possible to grow crops in an intensive manner without doing so, but it is necessary to do so to feed the population. In this respect, the use of herbicides or other weed control practices (e.g. hand-hoeing) inevitably will have an effect on biodiversity, whether those methods are used in conventional, organic or genetically modified herbicide-tolerant (GMHT) crops. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Recent literature from the UK following the Farm Scale Evaluations (FSE) of the environmental impact of GMHT oilseed rape, maize and sugar beet suggests that the recommended weed...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment; Plant Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4462/version/1

Urban Ecosystems: Alterations to Peakflow, Microclimate and the Natural Environment
Provedor de dados: 17
Autores: Jason A. Hubbart.
More than half of the world&amp;#x2019;s population now lives in urbanized ecosystems. Continued human population growth over the next several decades will place unprecedented demand on urban water resources, resulting in escalating water quality and supply challenges. Urbanization exacts significant impacts on stream ecosystems including increased magnitude and frequency of peak flows, altered microclimates and reduced biodiversity. Increased impervious surface area in urban settings reduces or eliminates soil infiltration and increases the amount of stormwater runoff delivered to stream channels. Stormwater routing networks in urban areas channelize runoff, reducing stormwater transit time. Stormwater flow serves as an important transport mechanism for...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment; Plant Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/3603/version/1

The Policy Requirements of Gene-Environment Research
Provedor de dados: 17
Autores: Paul Wise.
Dr. Paul Wise began with a brief overview of policy formation, specifically that related to child development. He then delved into the changing taxonomy of disease and its implications for policy. He concluded by stressing the need for frameworks for collective action to reframe policy in terms of gene-environment interactions.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch Dr. Wise&amp;#x2019;s presentation, please see the Panel 4 &amp;#x22;Google Video posting.&amp;#x22;:http://video.google.com/videoplay?docid=-1375553372274016362&amp;#x26;hl=en  Panel 4 also features presentations by Dr. Richard Sharp of the Cleveland Clinic on &amp;#x22;Disease Advocacy and Contested Environments&amp;#x22; and by Professor Sara Shostak of Brandeis University on...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2650/version/1

Reactome: A database of biological pathways
Provedor de dados: 17
Autores: David Croft.
REACTOME is an open-source, open access, manually curated, peer-reviewed and highly reliable pathway database. A new website is currently in preparation, which includes tools for visualising pathway diagrams and analyzing user-supplied data in a pathway context.  Reactome provides facilities for exporting its content in BioPax and SBML formats.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5025/version/1

ChEBI, an Open-access Chemistry Resource for the Life Sciences:  Facilities for On-line Submission and Curation
Provedor de dados: 17
Autores: Marcus Ennis.
ChEBI (Chemical Entities of Biological Interest) is a database of &amp;#x2018;small&amp;#x2019; molecular entities structured around a chemical ontology. It contains almost 600,000 entries, of which approximately 20,000 have been manually curated, as well as entries for groups (parts of molecular entities) and classes of entities. It provides a wide range of information such as chemical nomenclature, structures and related chemical values, and establishes interrelationships between entities in the ontology, in terms of both structure and role. ChEBI places a strong focus on quality, with exceptional efforts being applied to upholding IUPAC nomenclature recommendations and best IUPAC practices when drawing chemical structures....
Tipo: Presentation
Palavras-chave: Chemistry; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5091/version/1

Wikis as platforms for scholarly publishing
Provedor de dados: 17
Autores: Daniel Mietchen.
While scholarly publishing has traditionally focused on stand-alone articles describing how a specific act of research advanced knowledge in a particular area for once, wikis and similar collaborative online environments provide the technical means to focus on contextually interlinked concepts instead and to update them continuously as new research results come in. Some platforms based totally or in part on these principles have already been put to practical tests whose relevance for Open Access publishing are discussed here, paying special attention to implementations of the review process. The presentation was given &amp;#x22;on-wiki&amp;#x22;:http://en.citizendium.org/wiki/User:Daniel_Mietchen/Talks/COASP_2010/Start .
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4880/version/1

Update on libSBML status
Provedor de dados: 17
Autores: Sarah M. Keating.
Update on the current status of the stable 4.2.0 release and the developmental 5.0.0 release of libSBML; an API library for reading/writing and manipulating SBML.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4996/version/1

The Evolutionary Seesaw: Origins of biodiversity?
Provedor de dados: 17
Autores: Carl Boettiger.
I consider the problem of evolutionary branching in adaptive dynamics without applying the limits of separation of timescales between ecological and evolutionary processes.  I derive expressions for the waiting time for a branching event to occur and survive in terms of both ecological and evolutionary parameters, and show  how demographic stochasticity alone can result in the frequent failure of adaptive branching.
Tipo: Presentation
Palavras-chave: Evolutionary Biology.
Ano: 2012
URL: http://precedings.nature.com/documents/6852/version/1

Functional Curation: Potential Future Directions for SED-ML
Provedor de dados: 17
Autores: Jonathan Cooper; Gary Mirams.
&amp;#x22;Functional curation&amp;#x22;:http://dx.doi.org/10.1016/j.pbiomolbio.2011.06.003 of models is essentially about enabling a set of models to be tested for reproduction of a particular behaviour under some protocol. The idea is to examine which of the models are capable of replicating experimentally observed results, and evaluate their suitability for &amp;#xd;&amp;#xa;reuse in particular modelling studies. This requires a description of the protocol being performed on the models, and ideally a community agreed standard for these. Clearly SED-ML is the obvious candidate here, however, in its current form it has a few limitations that preclude this application.  This talk discusses the requirements posed by functional curation, and introduces our...
Tipo: Presentation
Palavras-chave: Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6327/version/1

Development of a method for phenotyping Black Rot (_Guignardia bidwellii_) resistance on grapevine (_Vitis_ spp.)
Provedor de dados: 17
Autores: Friederike Rex; Iris Fechter; Ludger Hausmann; Reinhard T&amp;#xf6;pfer.
Black Rot of grapevine is caused by the Ascomycet _Guignardia bidwellii_. The pathogen was introduced from North America to Europe in the 19th century. Since 2002, increased effects of the disease have been noticed, causing significant yield losses in the region of Mosel and infections in all German wine-growing regions. For that reason, it is important to breed Black Rot-resistant grapevine cultivars. A method has been developed to characterize lots of vines in a fast and reliable way concerning their susceptibility. Initial data has been collected and can be used for genetic analysis (here QTL). The aim of the project is to develop a molecular marker correlating with Black Rot resistance which can be used to select juvenile plants and therefore support...
Tipo: Presentation
Palavras-chave: Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5743/version/1

Interactions between urban water policy, residential irrigation, and plant &amp;#x26; bird diversity in the Fresno-Clovis Metro Area
Provedor de dados: 17
Autores: Madhusudan Katti; Seth T. Reid; Bradley W. Schleder; John T. Bushoven; Andrew R. Jones; Henry D. Delcore; Derya &amp;#xd6;zg&amp;#xf6;c-&amp;#xc7;a&amp;#x11f;lar.
*Background/Question/Methods:*&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Ecological theory has begun to incorporate humans as part of coupled socio-ecological systems. Modern urban development provides an excellent laboratory to examine the interplay among socio-ecological relationships. Urban land and water management decisions result from dynamic interactions between institutional, individual and ecological factors. Landscaping and irrigation at any particular residence, for example, is a product of geography, hydrology, soil, and other local environmental conditions, the homeowners&amp;#x2019; cultural preferences, socioeconomic status, identity construction, neighborhood dynamics, as well as zoning laws, market conditions, city policies, and...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2011
URL: http://precedings.nature.com/documents/6228/version/1

Multivalent ligands of CD22 for targeting of B cells
Provedor de dados: 17
Autores: James C. Paulson.
Multivalent ligands of CD22 for active targeting of B cells. Mary O&amp;#x2019;Reilly, Wei Hsu Chen, Gladys Completo, Ying Zeng, Satoshi Futakawa and Cory Rillahan and James C. Paulson, Departments of Chemical Physiology and Molecular Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA, 92037&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The siglecs comprise 13 members of the immunoglobulin superfamily that recognize sialic acid containing glycans, and are differentially expressed on leukocytes and glial cells.   The natural ligands of siglecs typically occur on the same cell (in cis) and/or on adjacent cells (in trans).  Cis ligands mask the binding of multivalent synthetic sialoside ligands and are thought to regulate the activity of...
Tipo: Presentation
Palavras-chave: Biotechnology; Cancer; Chemistry; Immunology; Molecular Cell Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/3549/version/1

The Physiome languages: CellML and FieldML
Provedor de dados: 17
Autores: Peter J. Hunter.
Discussion of the markup languages being defined by the VPH/Physiome project for multiscale, multiphysics modeling.
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/4982/version/1

In silico Genetic Network Models for &amp;#xb;Pre-clinical Drug Prioritization
Provedor de dados: 17
Autores: Jianghui Xiong; Juan Liu; Simon Rayner; Ze Tian; Yinghui Li; Shanguang Chen.
The high rates of failure in oncology drug clinical trials highlight the problems of using pre-clinical data to predict the clinical effects of drugs. Patient population heterogeneity and unpredictable physiology complicate pre-clinical cancer modeling efforts. We hypothesize that gene networks associated with cancer outcome in heterogeneous patient populations could serve as a reference for identifying drug effects. Here we propose a novel in vivo genetic interaction which we call &amp;#x2018;synergistic outcome determination&amp;#x2019; (SOD), a concept similar to &amp;#x2018;Synthetic Lethality&amp;#x2019;. SOD is defined as the synergy of a gene pair with respect to cancer patients&amp;#x27; outcome, whose correlation with outcome is due to...
Tipo: Presentation
Palavras-chave: Biotechnology; Cancer; Genetics &amp; Genomics; Molecular Cell Biology; Pharmacology; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5343/version/1

MaizeGDB , maize genetics cooperation and the ~2500MB B73 genome generated tsunami
Provedor de dados: 17
Autores: Mary Schaeffer; Jack Gardiner; Elisabeth Harper; Carson Andorf; Darwin Campbell; Ethalinda Cannon; Taner Z. Sen; Carolyn Lawrence.
Advances in sequencing technology have made it possible to sequence the 2500 MB B73 maize genome, both cheaply and in a relatively short time. Nearly simultaneously, other sequencing-based data are on the leading edge of a data tsunami: sequenced differences (currently &amp;#x3e;300,000 SNP for  &amp;#x3e;1000 inbred lines and related species) and gene expression data.  The MaizeGDB team integrates access to these datasets after considerable cooperation among both data users and suppliers, and typically while the data are being generated. In this way, data suppliers have resources in place to format data ready for integration with MaizeGDB.  And, we learn what details, including links to other resources, are needed to support our user community and what...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5258/version/1

Integrating &amp;#xa0;text-&amp;#xad;mining&amp;#xa0;effort requires&amp;#x9;output standards
Provedor de dados: 17
Autores: Andra Waagmeester.
We recently released a plugin to Pathvisio to assist the curator with automatic integration of heterogeneous pathway knowledge. Pathway curation involves gathering this knowledge not only through discussions with peers, but also from biological databases and the scientific literature. Integrating this all into one pathway is challenging and to date still mainly a laborious manual process. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;More and more biological databases provide webservices (ie. REST or SOAP). The main objective of webservices is to provide an interface for other computer applications. Our plug-in uses these interfaces to gather binary relationships of a given pathway entity and present the relation in star shaped figures to the curator. The plug-in...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/5850/version/1

A general model of continuous character evolution
Provedor de dados: 17
Autores: Carl Boettiger.
I present a general model for continuous character evolution, review some of the common challenges that emerge in such complex methods and review strategies for handling them.
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6080/version/1

Analysis of feral pig (Sus scrofa) movement in a Hawaiian forest ecosystem using GPS satellite collars
Provedor de dados: 17
Autores: Lasha-Lynn  H. Salbosa; Dr. Christopher A. Lepczyk.
The ecosystem altering impacts of feral pigs have been widely documented around the world.  However, a general framework for their control and management has been lacking, especially in island ecosystems.  One reason for this lack of management is that we have little knowledge of how pigs move through different island ecosystems, especially ones that are topographically challenging such as Hawai&amp;#x201b;i.  With recent advances in telemetry and movement modeling, it is now becoming practical to understand where these large introduced animals are moving and how they are using habitat.  Hence, the primary goal of this study is to understand feral pig movement in terms of terrain, slope restrictions, and distance traveled beyond a natal site, within an...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3903/version/1

Data Basin Climate Center: sharing and manipulating spatial information on the web
Provedor de dados: 17
Autores: Dominique Bachelet; James Strittholt; Tosha Comendant.
Monitoring datasets is essential to detect changes that are occurring and identify thresholds that cause them, but scientists around the world are now generating large volumes of data that vary in quality, format, supporting documentation, and accessibility. Moreover, diverse models are being run at various spatial and temporal scales to try and understand past climate variability and its impacts, generate future climate and land use scenarios, and project potential future impacts to the planet. Conservation practitioners and land managers are struggling to synthesize this wealth of information, identify relevant and usable datasets, and translate evolving science results into on-the-ground climate-aware strategies.&amp;#xd;&amp;#xa;In partnership with...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/5256/version/2

Spatiotemporal regime of climate and streamflow in the U.S. Great Lakes Basin
Provedor de dados: 17
Autores: Boris Shmagin; Carol Johnston; Nir Krakauer.
We analyzed interannual and seasonal regimes of river runoff, precipitation, and air temperature for three nested regions: (1) the Upper Peninsula of Michigan, (2) the U.S. portion of the Great Lakes Basin, and (3) glaciated portions of the northeastern U.S. spanning from the Dakotas to New England. Data sources included historical records of 50 to 105 years duration from 45 USGS gauging stations and 198 U.S. National Climate Network stations, and satellite-derived estimates of global monthly precipitation gridded at 2.5 resolution for 1979-2008 (partly data about precipitations were collected and passed for analysis by Glenn Hodgkins from USGS). We examined the spatiotemporal variability of climate characteristics for these regions as a multidimensional...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3289/version/1

Systems Biology on Bio-Linux
Provedor de dados: 17
Autores: Mesude Bicak.
This presentation introduces the Bio-Linux Operating System which is a popular Computational Biology workstation with 500+ bioinformatics software. It then provides an overview of popular modelling approaches in systems biology, covering top-down, bottom-up and hybrid modelling. Finally it highlights the challenges being faced by systems biology modellers, agent-based modellers in particular, regarding standardisation efforts.
Tipo: Presentation
Palavras-chave: Biotechnology; Ecology; Genetics &amp; Genomics; Microbiology; Molecular Cell Biology; Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6348/version/1

Considerate Approaches to Achieving Sufficiency for ABC Model Selection
Provedor de dados: 17
Autores: Chris Barnes; Sarah Filippi; Michael  Stumpf; Tom  Thorne.
ABC methods have gained popularity in situations where traditional methods which involve explicit evaluation of likelihoods are either too cumbersome or fail outright. This, almost by definition means that for any interesting real-world scenario we have no or little recourse to sufficient statistics, which had previously been central to ABC approaches and their derivation. In the context of model selection this can have particularly undesirable consequences if we have to compress the data through the use of summary statistics. In this talk we discuss complementary approaches that allow us to address this problem in a principled manner, and outline the scenarios where ABC model selection is unproblematic. We will argue that many of the most interesting...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5952/version/1

Some thoughts about the future of SBML
Provedor de dados: 17
Autores: Nicolas Le Novere.
SBML was designed in 2000, merely 2 years after the first official specification of XML. 11 years afterward, the current structure of the language is largely unchanged. Since then, its user base evolved much, as did the whole field of modeling in biology. &amp;#xd;&amp;#xa;If one wants SBML to evolve in the next decade, it is time to start discussing the basics now. The presentation covers a series of fundamental issues such as SBML coverage, unity of the language, use of elements and attributes etc.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6387/version/1

Agriculture: Nanotechnology&amp;#x2019;s Green Field
Provedor de dados: 17
Autores: Siddhartha Sankar Mukhopadhyay.
Natural agricultural production functions in open system, where energy and matter are exchanged freely between geosphere (especially pedosphere), biosphere, and atmosphere. The self regulation of biophysical processes in these spheres is crucial for global sustainability. However, modern farming practices have stressed the system to the extent that damaged C, N, and P cycles are threatening catastrophic consequences. High food-wastage coupled with high food price, high soil fertility zones but low crop productivity, and highly productive irrigated farming marred with ecological disasters are examples of global paradoxes associated with modern farming. High incidence of pesticide residues in soil and water bodies, low use efficiency of agricultural inputs,...
Tipo: Presentation
Palavras-chave: Chemistry; Ecology; Earth &amp; Environment.
Ano: 2012
URL: http://precedings.nature.com/documents/6900/version/1

Nano-enabled Biological Materials
Provedor de dados: 17
Autores: Bradly J. Alicea.
This talk is an attempt to define a new field called &amp;#x201c;Nano-enabled Biological Tissues&amp;#x201d;. As such, this talk serves as a review of both the theoretical underpinnings and relevant recent results. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The presentation is divided into several parts: &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;* in the first section (slides 3-4), the concept of nano-enabled tissues are introduced as a complex system that can be engineered at multiple scales.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;* the second section (slides 5-12) contains three essential ingredients to achieve the technological vision. Current examples of each ingredient are introduced separately.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;* in the third section (slides 13-17),...
Tipo: Presentation
Palavras-chave: Biotechnology; Molecular Cell Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/5448/version/1

Learning to Leap: Nanotechnology&amp;#x27;s Root in Soil Science
Provedor de dados: 17
Autores: Siddhartha Sankar Mukhopadhyay.
Dr. Nil Ratan Dhar Memorial Lecture&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Soil could be perceived as a four dimensional system where a broad three dimensional structural fabric is filled by dynamic and reactive colloidal constituents. There are interconnected relationships between authegenic, neogenic and stable-phase crystallite constituents, most of which are in nano-phase, and the system seldom reaches  equilibrium. Also, variations in composition, pH, and other properties make soil unique at each place. Therefore, understanding of soil system helps to develop insight into mobility and reactivity of nano-materials. The origin of nanoscience can be traced to the discovery that clay minerals were crystalline and of micrometer size. The unit cell dimensions...
Tipo: Presentation
Palavras-chave: Chemistry; Ecology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/6656/version/1

BiNoM Cytoscape Plugin for constructing, querying and analyzing biological networks, using systems biology standards
Provedor de dados: 17
Autores: Andrei Zinovyev.
BiNoM is a Cytoscape plugin which allows to read, analyze and convert biological networks represented in various systems biology standards.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5120/version/1

bioDBcore: overview of the checklist and steps towards implementation
Provedor de dados: 17
Autores: Pascale Gaudet (Pascale.Gaudet@isb-sib.ch); Philippe Rocca-Serra (proccaserra@googlemail.com).
Members of the International Society for Biocuration (ISB, biocurator.org) and the BioSharing (biosharing.org) initiative work together to develop and implement BioDBcore (biodbcore.org), a community-defined, uniform system for describing the core attributes of biological databases, in particular, indicating in a consistent manner which community-defined standards (minimal information checklists, terminologies and exchange formats) they implement. The BioSharing catalogue offers this &amp;#x201c;one-stop shop&amp;#x201d; for those seeking information about the standards and data sharing policies.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;This presentation illustrates the rational for BioDBcore(P Gaudet) and the progresses for its implementation (P Rocca-Serra),...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6167/version/1

How Britain became an island
Provedor de dados: 17
Autores: Philip Gibbard.
Island Britain is separated from the European continent by the English Channel and the North Sea. But it was not always so. The floor of the Channel provides evidence for two catastrophic floods arising from the drainage of huge glacial lakes in the area of the southern North Sea. These megafloods carved the Dover Strait to make Britain the island it is today.
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2007
URL: http://precedings.nature.com/documents/1205/version/1

Dynamic is-a Hierarchy Generation from a Clinical Medical Ontology
Provedor de dados: 17
Autores: Hiroko Kou; Jun Zhou; Mamoru Ohta; Kouji Kozaki; Ken Imai; Riichiro Mizoguchi; Kazuhiko Ohe.
This article discusses an ontology-handling technology to provide on-demand reorganization of is-a hierarchy of diseases instead of one fixed hierarchy to cope with various viewpoints which physicians might have. It is one of the important benefits of our medical ontology which is developed as a Japanese national project. This technology tackles with the multi-perspective issues of medical knowledge.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3502/version/1

Java support for SED-ML
Provedor de dados: 17
Autores: Richard R. Adams.
This presentation describes Java support for the SED-ML simulation experiment description language. Firstly, a Java API library for low-level manipulations of the SED-ML object model, and secondly a SED-ML editor, SED-ED, for visualizing and editing SED-ML workflows
Tipo: Presentation
Palavras-chave: Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6334/version/1

The true story behind the annotation of a pathway
Provedor de dados: 17
Autores: Giovanni Marco G. M. Dall&amp;#x27;Olio; Hafid H. Laayouni.
On 2010 we worked on the annotation of the N-Glycosylation pathway in the Reactome database. During this process, we found some unclear points and errors in other databases, and we reported and helped fix them. After we finished, we realized that the work of reporting errors to a database is basically not acknowledged by the scientific community: this is unfortunate because if only this process would be a bit more recognized and transparent, we could have better data in the databases and a more active community. Moreover, the fact that many databases tend to keep error reporting private creates great issues to the reproducibility of a work.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Another way to look at this talk is: if you dedicate 6 months of your PhD thesis...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5561/version/2

Spatio-temporal Trends of Standardized Precipitation Index for Meteorological Drought Analysis across Agroclimatic Zones of India
Provedor de dados: 17
Autores: Somnath Jha; Vinay Sehgal; Ramesh Raghava.
1. Introduction:&amp;#xd;&amp;#xa;Drought is a normal part of climate of India and every year it affects one or the other State. Droughts, like other meteorological phenomena, have spatial and temporal characteristics that vary significantly from one region to another. The understanding of the spatio-temporal trends of meteorological drought helps in undertaking informed decisions on their preparedness and mitigation measures. Though no significant trends have been reported in the Indian Summer Monsoon Rainfall (IMSR) over long periods, the spatio-temporal trends in drought indices reveals the anomaly in rainfall across regions over different time scales which may be related to climate change induced extreme rainfall events. So, a study was carried out to...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/5922/version/1

Organic Control of Oilseed Rape Pests through Natural Pesticides and Mixed Cultivation with Turnip Rape
Provedor de dados: 17
Autores: Tobias Ludwig; Eva Jansen; Benjamin Trost; Julia Mayer; Stefan K&amp;#xfc;hne; Herwart B&amp;#xf6;hm.
A mixed cropping system of rapeseed and 10 % turnip rape as trap crop was compared with oilseed rape in pure stand to demonstrate the reduction of infestation by insect pests. Furthermore the application of bio-pesticides like pyrethrum/rape oil (Spruzit&amp;#xae; Neu), spinosad (SpinTor), diatomeen earth (SiO~2~) /sunflower-oil and rock powder/water was tested. Oilseed rape showed a higher infestation by stem weevils (_Ceutorhynchus_ spp.) in the mixed cropping system compared to rapeseed in pure stand. The reduction of the pollen beetle (_Meligethes aeneus_) on the rapeseed buds resulted from higher attractiveness of turnip rape as a consequence of advanced growth. The faster development of turnip rape seems to be the important key of successful pollen...
Tipo: Presentation
Palavras-chave: Chemistry; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5741/version/1

Bioinformatics Approach for Functional Glycomics
Provedor de dados: 17
Autores: James C. Paulson.
Presentation in the Human Glycomics Proteomics Disease Initiative (HGPI) session.
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/15/version/1

Studying Biocuration Workflows
Provedor de dados: 17
Autores: Gully A. P. C. Burns; Martin Krallinger; Kevin Cohen; Cathy Wu; Lynette Hirschman.
As the first phase of a knowledge engineering study of biocuration workflows, we performed a preliminary task-modeling exercise on seven separate bioinformatics systems. This involved constructing UML activity diagrams from detailed interviews with curators in order to understand the organization of the process the biocurators used to populate their system. The objective of this work was to identify common patterns within the workflows where we might apply text mining methods to accelerate curation. We compiled a number of workflows in a common format but were largely unable to consolidate these structures into a formal structure that facilitated comparison across workflows. At present, more work is needed to perform this task.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3249/version/1

BrainGrab: Capturing Curator Expertise as Reusable Annotation Rules
Provedor de dados: 17
Autores: Daniel H. Haft; Malay K. Basu; Roland A. Richter.
Experienced biocurators can outperform automated systems on specific genes once they determine which pieces of evidence should drive annotation, and which annotations should be spread. The annotation logic may weigh both homology evidence (BLAST matches or HMM hits) and non-homology evidence (neighboring genes, metabolic context, taxonomic group). Unfortunately, the expertise developed to annotate each gene is short-lived, and is mostly lost if the logic driving the annotation is not captured. We report the development of BrainGrab, an interface added to the MANATEE manual annotation tool for prokaryotic genomes. The curator can specify evidence scenarios that should always lead to equivalent annotation for similar genes in similar contexts, and thus...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Microbiology; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3313/version/1

Remote Sensing for Water Quality Monitoring &amp;#x26; Watershed Assessment On the Lake Traverse Reservation
Provedor de dados: 17
Autores: David German; Mary O&amp;#x2019;Neill; James Sampson; Boris Shmagin.
During the summer of 2010, three student interns from Sisseton Wahpeton Tribal College along with researchers from South Dakota State University engaged in a pilot project to assess the feasibility of using Landsat imagery to determine water transparency in reservation lakes in northeastern South Dakota.  The students were trained to assist with data collection, image processing, and spatial and statistical analyses.  Secchi depth measurements and lake algae bloom observations were made on cloud-free Landsat overpass days.  Measurement locations were geo-referenced using GPS.  Field observations and satellite image classification and interpretation techniques were used to create a land use map for the watershed and explore possible land-use-related causes...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/6019/version/1

The Use of Critical Solution Mixtures for Contaminated Sediments Remediation
Provedor de dados: 17
Autores: Tal Golan; Zvi Ludmer; Elena Ermolenko; Neima Brauner; Amos Ullmann.
Using a critical solution mixture, into which chelating agents have been dissolved, resulted in the efficient, rapid and simultaneous removal of both heavy metals and organic pollutants from contaminated sediments. Both heating and cooling across the immiscibility curve and isothermal extraction were investigated. In addition, the extraction yields were compared to those obtained with solution mixtures that do not possess a critical point of miscibility. Extraction yields of the former were superior to those of the latter in the range of relevant pressures (1 atm.) and temperatures. Extraction via heating and cooling across the miscibility curve resulted in the removal of close to 90% of the heavy metals and practically all of the organic contaminants,...
Tipo: Presentation
Palavras-chave: Chemistry; Earth &amp; Environment.
Ano: 2007
URL: http://precedings.nature.com/documents/792/version/1

The Human Variome Project &amp;#x2013; Pilot project and progress
Provedor de dados: 17
Autores: Richard Cotton.
Cotton R.G.H. and Collaborators&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Convenor, Human Variome Project; Head, Genomic Disorders Research Centre, Howard Florey Institute; Department of Medicine, the University of Melbourne, Melbourne, Australia&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The Human Variome Project (Cotton et al 2007) (&amp;#x22;www.humanvariomeproject.org&amp;#x22;:http://www.humanvariomeproject.org) was initiated in June 2006 (Ring H.Z. et al. 2006) drawing attention to the importance of collection of variation and its phenotype and to develop programs to put this into effect.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The project builds on work and concepts of the HGVS and others over many years (&amp;#x22;www.hgvs.org&amp;#x22;:http://www.hgvs.org) to focus...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2010
URL: http://precedings.nature.com/documents/5208/version/1

Using lidar remote sensing and support vector machines to classify fire disturbance legacies in a Florida oak scrub landscape
Provedor de dados: 17
Autores: James J. Angelo; Brean W. Duncan; John F. Weishampel.
Background/Question/Methods&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Ecologists have long emphasized the reciprocal interactions between spatial pattern and ecological processes in the creation of landscape mosaics. While an enormous amount of recent research has focused on the quantification of spatial patterns, efforts to infer process from pattern have been hindered by the presence of multi-scale, often confounding, drivers of pattern in many landscapes. At the mesoscale, Holling&amp;#x2019;s extended keystone hypothesis posits that spatially contagious disturbances such as fire are the dominant pattern-generating processes. To test this hypothesis, we used fire history data and discrete, small-footprint lidar remote sensing acquired over a 22 sq. km...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3610/version/1

Challenges in modeling disturbances&amp;#x27; effects on terrestrial carbon cycling
Provedor de dados: 17
Autores: Ben Bond-Lamberty.
Ecosystem disturbance presents modelers with a number of problems, of which the disturbance event itself may be the least problematic. First, most ecosystem models depend on reaching a steady state before the main computation begins; this already-tricky initial value problem is complicated by disturbances during spinup, which may prevent steady state from being reached. Second, vegetation dynamics becomes more important in disturbed ecosystems, with nutrient cycling, albedo, and evapotranspiration all changing markedly. Succession is handled crudely (or not at all) by many large-scale models, however. Third, disturbances tend to export the carbon--and its climate forcing potential--from the system under study, complicating and expanding the scope of the...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/4095/version/1

Recasting spatial food web ecology as an ecosystem science
Provedor de dados: 17
Autores: Fran&amp;#xe7;ois Massol; Dominique Gravel; Nicolas Mouquet; Marc W. Cadotte; Tadashi Fukami; Mathew A. Leibold.
Background/questions/methods&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Food webs are complex systems in which organisms interact with each other and with the abiotic aspects of their environment, thus acting as the conduit for transfers of energy and nutrients through ecosystems. Classical approaches to food webs focus strongly on patterns and processes occurring at the community level rather than at the broader ecosystem scale. Recent developments in community ecology suggest that spatial processes may be important in affecting food web dynamics and affect ecosystems as well, thus leading to the idea of meta-ecosystems. Here, we make a synthesis on how the links between food web dynamics and spatial ecosystem dynamics may be studied through (i) identifying...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5204/version/1

History and Philosophy of Gene Environment Interaction
Provedor de dados: 17
Autores: Kenneth  Schaffner.
Dr. Kenneth Schaffner gave a brief introduction to the symposium topics.  He began with a history of the thinking on gene-environment interactions and described the ensuing controversies.  He cited the lack of a consensus theory of the environment and then described some methodological and technological advances in the studies of gene-environment interactions.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch Dr. Schaffner&amp;#x2019;s presentation, please see the Panel 1 &amp;#x22;Google Video posting.&amp;#x22;:http://video.google.com/videoplay?docid=-3097337289947323438&amp;#x26;hl=en
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2656/version/1

What are the ethical and social responsibilities of scientists?
Provedor de dados: 17
Autores: Philip Campbell.
Presented as part of the session titled &amp;#x22;Sharing scientific data: who benefits?&amp;#x22; at ESOF (The Euroscience Open Forum) 2008.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Session abstract: Digital datasets&amp;#x2014;text-based, numeric, audio, video or image-based&amp;#x2014;form the output of all scientific disciplines. How are these data being made available for sharing? What quality control mechanisms are in place? What kinds of naming conventions, tags, and metadata are in use and how effective are they at helping to manage open data? Who is storing, archiving and curating open data and at which levels? And how is the production and sharing of open data assessed: what processes are in place for crediting scientists for making their raw data...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Molecular Cell Biology; Bioinformatics.
Ano: 2008
URL: http://precedings.nature.com/documents/2176/version/1

Extreme energy lability in human children: An overlooked and central aspect of human biology
Provedor de dados: 17
Autores: John Skoyles.
A four year old child devotes half their total energy expenditure (TEE) to their brains. Even by 10 years-of-age it is still 30% (compared to an adult&amp;#x2019;s &amp;#x2248;12%). This extreme energy use results from a high brain/body size ratio &amp;#x2013; combined with a doubling of cerebral gray matter energy utilization (due to synaptic exuberance during cognitive neuromaturation). &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;With extreme energy expenditure goes extreme vulnerability to hypoglycemia: (1) children become hypoglycemic after 24-36 hours of fast (compared to 60-72 hours in adults), and (2) their brains suffer neurological impairment (shown in disrupted P300 potentials) at a lower decrease in plasma glucose: 3.6 - 4.2 mmol L-1 in children rather...
Tipo: Presentation
Palavras-chave: Developmental Biology; Neuroscience; Evolutionary Biology.
Ano: 2012
URL: http://precedings.nature.com/documents/7097/version/1

First Hematological Signals of Latent Anemia to Aging Population
Provedor de dados: 17
Autores: Aurelian Udristioiu.
Anemia is an independent risk factor for morbidity and mortality in an array of disorders common to seniors including cancer, renal diseases and heart diseases.  The aim of this study was to identify the first hematological signals of latent anemia to aging population using as screening the hematological aspects of cells from peripheral blood and additional tests, establishing the etiology of anemia in the elderly.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;_Method_: Additional to level of hemoglobin(HGB) and hematocrit (HCT) have been included Hematological Indexes( MCV, HCV,  MCHC ), red cell distribution width,(RDW), reticulocyte count (RET),  serum iron (SI), total  iron binding capacity,(TIBC), transferrin saturation index, (TSI), serum ferritin( SF), on an...
Tipo: Presentation
Palavras-chave: Chemistry.
Ano: 2009
URL: http://precedings.nature.com/documents/3285/version/1

Dynamic Structures in SBML
Provedor de dados: 17
Autores: Chris Myers.
This talk describes ideas on how to integrate dynamic structures in SBML.
Tipo: Presentation
Palavras-chave: Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6342/version/1

BioSharing: Standards, Policies and Communication in Bioscience
Provedor de dados: 17
Autores: Dawn Field; Susanna-Assunta Sansone; Philippe Rocca-Serra.
BioSharing works at the global level to build stable linkages between journals, funders, implementing data sharing policies, and well-constituted standardization efforts in the biosciences domain, to expedite the communication and the production of an integrated standards-based framework for the capture and sharing of high-throughput genomics and functional genomic bioscience data.
Tipo: Presentation
Palavras-chave: Biotechnology; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6436/version/1

Bio2RDF: Convert, Provide And Reuse.
Provedor de dados: 17
Autores: Marc-Alexandre Nolin; Jacques Corbeil; Luc Lamontagne; Michel Dumontier.
The Bio2RDF project uses open-source Semantic Web technologies to provide interlinked life science data in order to maximize productivity and facilitate biological knowledge discovery. Using both syntactic and semantic data integration techniques, Bio2RDF puts into practice a simple methodology to generate and&amp;#xd;&amp;#xa;seamlessly integrate machine-interpretable data that can be powerfully interrogated with SPARQL-based queries to answer sophisticated questions.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;At its core, database records are converted into a set of statements or so-called triples that are captured together as a named graph annotated with provenance. The records and the entities they are about are provided with a Uniform Resource Identifier...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5060/version/1

A Quality Evaluation Framework for Bio-Ontologies
Provedor de dados: 17
Autores: Jesualdo Tomas Fernandez-Breis; Mikel  Ega&amp;#xf1;a Aranguren; Robert Stevens.
Over the past few years the number of bio-ontologies  has rapidly increased. The evaluation of ontologies has long been a problematic issue. The growing number of ontologies makes the need for a strategy for evaluating quality more urgent. We propose a framework for evaluating the quality of bio-ontologies. This framework is inspired by a well-known software quality standard, which has been adapted to the needs of ontology evaluation. An example of how to use the framework, comparing two versions of the Open Biomedical Ontologies&amp;#x27; Cell Type Ontology, is included as an illustration.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3478/version/1

Drug Use During Antenatal Period at a Tertiary Care Hospital
Provedor de dados: 17
Autores: Nargis Kureshee; Priti Dhande; Vijaya Pandit.
Objective- To assess current treatment practices and awareness of drug intake, in pregnant women, at a tertiary care hospital.&amp;#xd;&amp;#xa;Methodology- Observational, cross-sectional study, involving interview with 60 pregnant women, in outpatient clinic and ward of Obstetrics-Gynaecology department. Data from prescriptions &amp;#x26; case-files also collected. Drugs were classified according to pharmacological class and teratogenic potential using U.S. FDA classification.&amp;#xd;&amp;#xa;Results- Most commonly prescribed drugs were iron, folic acid and calcium supplements. Out of the total 215 drugs prescribed, majority were from Category A(70.2%) followed by Category B(18.6%),Category C(8.8%),Category-X(1.3%) and Category-D(0.9%). 26.6% women...
Tipo: Presentation
Palavras-chave: Pharmacology.
Ano: 2010
URL: http://precedings.nature.com/documents/5424/version/1

Purification and physicochemical studies of metalloprotease, cotinifolin from Euphorbia cotinifolia
Provedor de dados: 17
Autores: Reetesh Kumar.
A detailed procedure for the purification of cotinifolin from the latex of Euphorbia cotinifolia using ion exchange chromatography and hydrophobic interaction chromatography is described.&amp;#xd;&amp;#xa;Various biochemical characteristics of cotinifolin and other enzymatic properties along with spectroscopic parameters like circular dichorism and fluorescence have been reported. Cotinifolin is stable over a wide range of pH and under extreme conditions of chaotrops and organic solvents where most proteins lost their functions.  Further studies on the identification of physiological substrates, biophysical and structural studies will give insight into the utility of the enzyme in the biotechnological industries and protein engineering.
Tipo: Presentation
Palavras-chave: Biotechnology; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6397/version/1

Does accounting for imperfect detection improve species distribution models?
Provedor de dados: 17
Autores: Christopher T. Rota; Robert J. Fletcher; Jason M. Evans; Richard L. Hutto.
Background/Question/Methods&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Models of species distributions are increasingly being used to address a variety of problems in ecology and conservation biology. In many applications, perfect detectability of species, given presence, is assumed. While this problem has been acknowledged and addressed through the development of occupancy models, we still know little regarding whether or not addressing the potential for imperfect detection improves the predictive performance of species distribution models in nature. Here, we ask if explicitly accounting for imperfect detection improves predictive performance of species distribution models relative to approaches that assume perfect detection.  We contrast logistic regression...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5201/version/1

Off-line memory reprocessing in a recurrent neuronal network formed by unsupervised learning
Provedor de dados: 17
Autores: Jenia Jitsev; Christoph von der Malsburg.
In the visual cortex, memory traces for complex objects are embedded into a scaffold of feed-forward and recurrent connectivity of the hierarchically organized visual pathway. Strong evidence suggests that consolidation of the memory traces in such a memory network depends on an off-line reprocessing done in the sleep state or during restful waking. It remains largely unclear, what plasticity mechanisms are involved in this consolidation process and what changes are induced in the network during memory reprocessing in the off-line regime. Here we focus on the functional consequences off-line reprocessing has in a hierarchical recurrent neuronal network that learns different person identities from natural face images in an unsupervised manner. Due to the...
Tipo: Presentation
Palavras-chave: Neuroscience.
Ano: 2011
URL: http://precedings.nature.com/documents/5776/version/1

Can ABC be Used for Model Selection?
Provedor de dados: 17
Autores: Xavier  Didelot; Rich  Everitt; Adam  Johansen; Dan  Lawson.
Over the past ten years, Approximate Bayesian Computation (ABC) has become hugely popular to estimate the parameters of a model when the likelihood function cannot be computed in a reasonable amount of time. ABC can in principle be used also to perform Bayesian model comparison, but this raises the  question of which summary statistic should be used for such applications. Here we present a general method for constructing a summary statistic that is sufficient for the model choice problem. We apply this construction to models from the exponential family. Unfortunately, in more complex models, our construct often results in statistics with too high dimensionality to use in ABC. We therefore discuss the possibility of applying ABC with non-sufficient...
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5955/version/1

ABC for ancestral inference
Provedor de dados: 17
Autores: Richard  Wilkinson; Simon  Tavare.
ABC for ancestral inference
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5963/version/1

Nanomaterials: Look at the Earth
Provedor de dados: 17
Autores: Siddhartha S. Mukhopadhyay.
Nanotechnology promises to be the greatest technological breakthrough in history, doing for our control of matter what computers did for our control of information. The origins of nanoscience can be traced to clay mineralogy and crystallography when it was discovered that clay minerals were crystalline and of micrometer size. The unit cell dimensions of clay minerals are in nanometer scale in all three axes (x, y, and z). The advantages of clays are: (i) their ordered arrangements, (ii) their large adsorption capacity, (iii) their shielding against sunlight (ultraviolet radiation), (iv) their ability to concentrate organic chemicals, and (v) their ability to serve as polymerization templates. Clay minerals in nanoforms played a catalytic role in the...
Tipo: Presentation
Palavras-chave: Chemistry; Ecology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/5809/version/1

Tales From the Code Front:  Translating Modularity
Provedor de dados: 17
Autores: Lucian P. Smith.
In translating modular Antimony models to and from CellML, two differences appeared:  CellML&amp;#x27;s &amp;#x27;black box&amp;#x27; approach vs. Antimony&amp;#x27;s &amp;#x27;model composition&amp;#x27; approach, and CellML&amp;#x27;s math-based encoding vs. Antimony&amp;#x27;s object and rule-based encoding.  The latter turned out to have a much larger impact on the translation than anticipated.
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5132/version/1

Cognitive Sciences and Child Poverty: Facts and Challenges
Provedor de dados: 17
Autores: Amedeo D&amp;#x27;Angiulli; Sebastian Lipina.
In the context of cognitive neuroscience, the study of poverty and social gradients is a very young area of research where a core consensus of basic results is quickly emerging. However, as any emerging scientific discipline, the approaches used are influenced by epistemological stances inherited from other disciplines, and potentially implicit ideological systems as well. Explicitly or inadvertently, such influences can lead this critically important new area of research to methodological and ethical foundational challenges and to issues that are in need of debate (e.g., poverty definition criteria, lack of specificity when considering child poverty in terms of how children experience different type of deprivations, or lack of critics regarding social...
Tipo: Presentation
Palavras-chave: Neuroscience.
Ano: 2010
URL: http://precedings.nature.com/documents/4679/version/1

FreePub: Collecting and Organizing Scienti&amp;#xc;c Material Using Mindmaps
Provedor de dados: 17
Autores: Theodore Dalamagas; Tryfon Farmakakis; Manolis Maragkakis; Artemis Hatzigeorgiou G. Hatzigeorgiou.
This paper presents a creativity support tool, called FreePub,to collect and organize scientifi&amp;#xc;c material using mindmaps. Mindmaps are visual, graph-based representations of concepts, ideas, notes, tasks, etc. They generally take a hierarchical or tree branch format, with ideas branching into their subsections. FreePub supports creativity cycles. A user starts such a cycle by setting up her domain of interest using mindmaps. Then, she can browse mindmaps and launch search tasks to gather relevant publications from several data sources. FreePub, besides publications, identifies helpful supporting material (e.g., blog posts, presentations). All retrieved information from FreePub can be imported and organized in mindmaps. FreePub has been fully...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5432/version/1

Bringing Text Miners and Biologists Closer Together
Provedor de dados: 17
Autores: An&amp;#xe1;lia Louren&amp;#xe7;o; S&amp;#xf3;nia Carneiro; Rafael Carreira; Miguel Rocha; Isabel Rocha; Eug&amp;#xe9;nio C. Ferreira.
The boosting of Biomedical Text Mining (BioTM) research in the last few years has led the way for finally bridging out the gap between text miners and biologists. Beyond the development of enhanced entity recognisers and the construction of relationship extraction systems, now, more than ever, it is the time for applying available tools to real-world scenarios. Moreover, it is crucial to develop end-user tools that can assist biologists in their research activities. Such tools should be able to emulate biologist conventional curation, recurring to the same knowledge bases and making the same assumptions that biologists usually do, whereas delivering automated capabilities. The search and selection of PubMed articles, the construction of dictionaries from...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3188/version/1

Mushroom-bodies regulate habit formation in _Drosophila_
Provedor de dados: 17
Autores: Bj&amp;#xf6;rn Brembs.
Our past experience is one of the primary sources of information when faced with a choice. We ask ourselves: &amp;#x22;what will happen if I do this?&amp;#x22;&amp;#xd;&amp;#xa;Accurately predicting the consequences of our actions is usually modeled by operant (instrumental) learning experiments. These types of experiments are often contrasted with classical (Pavlovian) conditioning experiments in a dichotomy. And indeed, different brain circuits mediate the acquisition of skills and habits (via operant/instrumental learning) and the acquisition of facts (via classical/Pavlovian learning). However, realistic learning situations always comprise interactions of skill- and fact-learning components (composite learning). Fixed flying Drosophila melanogaster at...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Neuroscience.
Ano: 2008
URL: http://precedings.nature.com/documents/2171/version/1

_Streptomyces_ sp. as predators of bacteria
Provedor de dados: 17
Autores: Charushila A. Kumbhar; Milind G. Watve.
Background: The ecological role of actinomycetes and their secondary metabolites is not yet completely understood. &amp;#xd;&amp;#xa;Hypothesis: Actinomycetes and Streptomyces sp. in particular, are non-obligate predators of bacteria in soil. &amp;#xd;&amp;#xa;Evidence: Ability to grow on live bacterial cells as a sole source of nutrients. Prey cell lysis accompanying growth. Circumstantial evidence for the involvement of antimicrobials along with enzymes.&amp;#xd;&amp;#xa;Implications: This finding may open up a new source of novel secondary metabolites from the genus.
Tipo: Presentation
Palavras-chave: Biotechnology; Ecology; Microbiology.
Ano: 2007
URL: http://precedings.nature.com/documents/1263/version/2

Using TreeBASE from R
Provedor de dados: 17
Autores: Carl Boettiger.
I introduce an R package allowing programmatic access to the phylogenetic data in the TreeBASE archive and highlight why this is important.
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2012
URL: http://precedings.nature.com/documents/6851/version/1

Creating &amp;#x201c;fire-smart&amp;#x201d; forest stands and landscapes
Provedor de dados: 17
Autores: Paulo Fernandes.
Wildland fire is an important feature of the Mediterranean Basin. Past fire incidence has been limited by landscape diversity and the intensity of biomass use. Fire activity and the meteorological component of fire danger have increased during the last decades, but the fire regime modification was primarily fuel-driven, i.e. caused by changes in land cover and land use. Fire-smart forests and landscapes are resistant to fire spread and resilient to its occurrence. In cultural landscapes where fires are seldom allowed to spread &amp;#x22;fire smartness&amp;#x22; is attained through proactive management by either treating fuels in fire-prone vegetation types or decreasing the importance of those vegetation types in the landscape. The presentation overviews...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/6245/version/1

Reducing Greenhouse Gas Emissions: Geological Storage of CO2
Provedor de dados: 17
Autores: Tara LaForce.
Carbon capture and storage (CCS) is the collection of carbon dioxide (CO2) from industrial point sources such as power plants and its injection underground.  Much of the technology necessary to capture and inject CO2 into the subsurface already exists and CCS will be an integral part of any strategy to combat anthropogenic climate change until we, as a society, are able to move away from our dependence on fossil fuels.   &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;There are three options for geological storage of CO2: deep saline aquifers, depleted oil reservoirs and unmineable coal beds.  It is the purpose of this presentation to provide a general survey of each of these options.  For each geological formation I review (1) The ways in which CO2 could escape into...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/1590/version/1

Comparative Litter Quality and Recalcitrance Among Native Grasses and the Invasive, Non-indigenous KR Bluestem (_Bothriochloa ischaemum_)
Provedor de dados: 17
Autores: Amanda Benbow; Kelly G. Lyons.
KR Bluestem (_Bothriochloa ischaemum_) is a non-indigenous, invasive, C4 grass that was introduced throughout the Midwestern and Southwestern U.S. short- to midgrass prairies with the aim of improving degraded rangelands.  The aggressive nature of KR bluestem has led to dramatic alterations of natural and managed ecosystems. Comparative studies of decomposition often show that non-indigenous, invasive plant species have higher rates of nutrient cycling than indigenous species; however, KR bluestem appears to deviate from this trend.  Large amounts of litter are observed in KR-dominated grasslands as compared to intact native grasslands, suggesting that the species has a relatively lower decomposition rate and may slow nutrient cycling in these systems....
Tipo: Presentation
Palavras-chave: Ecology; Plant Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/3614/version/1

Docking-based virtual screening for the exploration of potential antagonists for human IGFBP6
Provedor de dados: 17
Autores: Bhuvanagiri Sravani; Dibyabhaba Pradhan; Amineni  Umamaheswari.
Design of potential drug-like candidates for cardiovascular therapy is of interest in recent years. Elevated level of IGFBP-6 leads to perilous diseases like atherosclerosis, high output cardiac failure and myocardial infarction. The current IGFBP-6 inhibitors available in clinical practice are not having satisfactory anti-cardiovascular effects, leaving room for further improvement. Therefore, with an aim to propose a potent inhibitor to arrest the cardiovascular disease caused by IGFBP-6, tools of computer-aided drug designing were used for virtual screening from small molecule databases. Accordingly, IGFBP-6 tertiary structure was solved through nuclear magnetic resonance techniques retrieved from the protein data bank. Fifteen IGFBP-6 inhibitors were...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6525/version/1

An Integrated IGCC-CSS Design Course for Graduate Students in Petroleum Engineering
Provedor de dados: 17
Autores: Gioia Falcone; Behnam Jafarpour; Maria Barrufet.
A new graduate course on CO2 Capture and Uses was offered for the first time at Texas A&amp;#x26;M, Pet. Eng., in Fall 2008. &amp;#xd;&amp;#xa;A multidisciplinary team of instructors from the Pet. Eng. &amp;#x26; Chem. Eng. departments was assembled to ensure the appropriate expertise.&amp;#xd;&amp;#xa;The objective of the course is to let the students understand the need for / potential of Carbon Capture and Storage (CCS) &amp;#x26; Enhanced Oil Recovery (EOR).
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2627/version/1

Reactivation of Limestone-Derived Sorbents using Hydration: Preliminary Results From a Fluidised Bed
Provedor de dados: 17
Autores: John Blamey; Paul S. Fennell; Denis R. Dugwell.
A simple method of CO~2~ capture is by using the calcium looping cycle. The calcium looping cycle uses CaCO~3~ as a CO~2~ carrier, via the reversible reaction CaO(s) + CO~2~(g) = CaCO~3~(s), to extract CO2 from the exhaust stream and provide a pure stream of CO~2~ suitable for sequestration. &amp;#xd;&amp;#xa;A problem associated with the technology is that the capacity of the sorbent to absorb CO~2~ reduces significantly with the number of cycles of carbonation and calcination. The energy penalty of the cycle is considerably increased by cycling unreacted sorbent: hydration of unreactive sorbent has emerged as a promising strategy of reducing this penalty by regenerating the reactivity of exhausted sorbent.&amp;#xd;&amp;#xa;A small atmospheric pressure...
Tipo: Presentation
Palavras-chave: Chemistry; Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2630/version/1

OneStop:JWS Online&amp;#x27;s access point to SBML,SBGN and MIRIAM compliant annotation
Provedor de dados: 17
Autores: Franco B. Du Preez; Stuart Owen; Katherine Wolstencroft; Olga Krebs; Wolfgang M&amp;#xfc;ller; Carole Goble; Jacky L. Snoep.
We have developed an online model constructor and validator called OneStop, which is compliant with SBGN, SBML and MIRIAM standards. Key features of OneStop are: 1) a human readable input form (in addition to SBML upload and saving); 2) live visualization (SBGN graphics) of the reaction network during the construction phase; and 3) online access from any machine with a compatible browser. Sophisticated error feedback simplifies the debugging process during model construction significantly and guides the efforts of new users in a step by step fashion. OneStop is seamlessly integrated with the JWS Online model repository and simulator and also facilitates the importation of models from the BioModels database. In addition, OneStop is part of the SysMO-SEEK...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6349/version/1

Sustainability and Environmental Chemistry in Semi-Arid/Arid Regions: A Unique Research Opportunity with Global Implications
Provedor de dados: 17
Autores: Sierra Rayne.
Dr. Sierra Rayne will be speaking on the interplay of sustainability and environmental chemistry in semi-arid and arid regions worldwide. Drawing on his previous, current, and proposed research on organic and inorganic contaminants in aquatic systems, Dr. Rayne will illustrate the importance of multidisciplinary and interdisciplinary approaches towards tackling environmental problems. A key element of his work is looking at chemical dynamics in environmental matrices, and in particular, photochemically generated reactive intermediates and their impact on biological systems and net ecosystem functions. Semi-arid/arid regions also offer unique opportunities to focus on the role of photochemistry in the biogeochemical cycling of oxyanion-forming heavy metals...
Tipo: Presentation
Palavras-chave: Chemistry; Earth &amp; Environment.
Ano: 2007
URL: http://precedings.nature.com/documents/689/version/1

Modeling Animal Movements in Response to Human Disturbances
Provedor de dados: 17
Autores: Haiganoush K. Preisler; Alan A. Ager; David R. Brillinger; Michael J. Wisdom.
1) Background/Question/Methods&amp;#xd;&amp;#xa;The advent of GPS technology has made it possible to study human - wildlife interactions on large landscapes and quantify behavioral responses to recreation and other anthropogenic disturbances at increasingly fine scales.  Of particular interest are the potential impacts on habitat use patterns, energetics, and cascading impacts on fecundity and other life history traits for key wildlife species that are increasingly exposed to human activities.  However, the dynamics of free-ranging animal movements are complex, even without disturbances, and quantifying reactions to disturbance on heterogeneous landscapes is difficult.  A modeling framework is required that can sort out diel and random movements that mask...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5312/version/1

Analysis and visualisation of RDF resources in Ondex
Provedor de dados: 17
Autores: Catherine Canevet; Artem Lysenko; Andrea Splendiani; Matthew Pocock; Chris Rawlings.
An increasing number of biomedical resources provide their information on the Semantic Web and this creates the basis for a distributed knowledge base which has the potential to advance biomedical research [1].  This potential, however, cannot be realized until researchers from the life sciences can interact with information in the Semantic Web. In particular, there is a need for tools that provide data reduction, visualization and interactive analysis capabilities.&amp;#xd;&amp;#xa;Ondex is a data integration and visualization platform developed to support Systems Biology Research [2]. At its core is a data model based on two main principles: first, all information can be represented as a graph and, second, all elements of the graph can be annotated with...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5430/version/1

A community of biocurators
Provedor de dados: 17
Autores: Pascale Gaudet.
Biocuration is a difficult mission: biological data is highly heterogeneous, and there are few areas where guidelines for data preservation and exchange exist. This has hampered the speed, quantity and diversity of data possible to capture. Hence, a major challenge for the biocuration community is to explore innovative ways to capture, represent and display information. It is also essential to increase the involvement of researchers, publishers and funding agencies in this process. I will discuss the work of the International Society for Biocuration to build a community of biocurators to achieve these goals.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5134/version/1

Osmotic stress and water isotope effects in kinesin-1 gliding motility assays
Provedor de dados: 17
Autores: Steven J. Koch; Andy Maloney; Lawrence J. Herskowitz.
The osmotic pressure and kinetic properties of water play important roles in biomolecular interactions.  As pointed out by Parsegian, Rand, and Rau, these crucial roles are often overlooked[1].  In some fields, osmotic stress and isotope effects have been exploited for probing the role water plays in binding interactions of biomolecules.  To our knowledge, there have been no studies of osmotic stress and water isotope effects for kinesin, and only a handful for myosin.  We&amp;#x27;re currently using the gliding motility assay to see whether we can extract new information about kinesin-1 / microtubule interactions by changing osmotic stress and water isotopes.  We will describe our open-source, automated analysis platform for extracting microtubule gliding...
Tipo: Presentation
Palavras-chave: Molecular Cell Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4479/version/1

Sharing Detailed Research Data Is Associated with Increased Citation Rate
Provedor de dados: 17
Autores: Heather A. Piwowar.
Presentation based on the publication here:&amp;#xd;&amp;#xa;Piwowar HA, Day RS, Fridsma DB (2007) Sharing Detailed Research Data Is Associated with Increased Citation Rate. PLoS ONE 2(3): e308. doi:10.1371/journal.pone.0000308&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Sharing research data provides benefit to the general scientific community, but the benefit is less obvious for the investigator who makes his or her data available.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;We examined the citation history of 85 cancer microarray clinical trial publications with respect to the availability of their data. The 48% of trials with publicly available microarray data received 85% of the aggregate citations. Publicly available data was significantly (p = 0.006) associated with...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/361/version/1

PathExpand: Extending biological pathways using molecular interaction networks
Provedor de dados: 17
Autores: Enrico Glaab; Anais Baudot; Natalio Krasnogor; Alfonso Valencia.
We present a methodology for extending pre-defined protein sets representing cellular pathways and processes by mapping them onto a protein-protein interaction network, and extending them to include densely interconnected interaction partners. The added proteins display distinctive network topological features and molecular function annotations, and can be proposed as putative new components, and/or as regulators of the communication between the different cellular processes. Finally, these extended pathways and processes are used to analyze their enrichment in cancer mutated genes. Significant associations between mutated genes and certain processes are identified, enabling an analysis of the influence of previously non-annotated cancer mutated genes.
Tipo: Presentation
Palavras-chave: Cancer; Genetics &amp; Genomics; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5639/version/1

A Framework for BioCuration Workflows (part II)
Provedor de dados: 17
Autores: Martin Krallinger.
This is the second part of the talk &amp;#x2018;A Framework for BioCuration Workflows&amp;#x2019;, given by Martin Krallinger from the Spanish National Cancer Research Centre at the &amp;#x27;Text Mining for the BioCuration Workflow&amp;#x27; workshop. The first part was held by Gully APC Burns (USC Information Sciences Institute, USA). This presentation covered some of the main general tasks often shared by existing literature biocuration workflows: Identification of relevant articles, identification and normalization of the actual bio-entities, the extraction of the annotation event and the identification of some evidential support (e.g. experimental evidence). Some of the important aspects, bottlenecks and potential text mining approaches were briefly...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3126/version/1

Phenotypes, Social Constructionism and the Spurious Finding
Provedor de dados: 17
Autores: Nancy Press.
Dr. Press discussed behavioral genetics through the lens of social constructionism.  She also discussed the phenomenon of medicalization, focusing on the example of smoking as a behavior.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch Dr. Press&amp;#x27;s presentation, please see the &amp;#x22;Google Video posting&amp;#x22;:http://video.google.com/videoplay?docid=522910112497476586&amp;#x26;hl=en.
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2568/version/1

Future Outlook for Databases from the Perspective of Bioresources Databases
Provedor de dados: 17
Autores: Yukiko Yamazaki.
Databases, like journals, are now an essential component of our research activities. However, the maintenance of databases and the timely, accurate, and complete incorporation into them of the wealth of data being created daily through scientific activities represent a difficult problem.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;I have been working on bioresources databases and come to appreciate the need for closer links between journals and databases to improve the scientific value of databases. For example, it is frequently difficult to identify experimental materials from articles in journals. In experimental science, it is vital that one scientist&amp;#x2019;s experiments are readily reproducible by others; this requires an environment that provides other...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5068/version/1

Implementation of SBML Level 3 Support within iBioSim
Provedor de dados: 17
Autores: Chris J. Myers.
This presentation gives details about our experiences when adding SBML Level 3 support to our iBioSim tool.&amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4988/version/1

Identification and Evolution of Transcription Factors in Stramenopiles
Provedor de dados: 17
Autores: Francisco Buitrago; Silvia Restrepo; Diego Ria&amp;#xf1;o-Pach&amp;#xf3;n.
Background. &amp;#xd;&amp;#xa;Many transcriptional regulatory proteins have been identified and classified into several families on the basis of sequence similarity (Fukami, 2003), these families usually regulate important biological processes, such as development and responses to external stimuli. Transcription factors (TFs) regulate spatial and temporal gene expression by binding to DNA and either activating or repressing the action of RNA polymerases (Latchman, 2004); in addition to TFs, other Transcriptional regulators (TRs) participate in transcriptional modulation by e.g., chromatin remodeling. With the availability of genome sequences for several organisms and computational strategies for gene functional annotation, the entire set of Transcription...
Tipo: Presentation
Palavras-chave: Microbiology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6400/version/1

An OWL-DL Ontology for Classification of Lipids
Provedor de dados: 17
Autores: Hong-Sang Low; Christopher  J. O. Baker; Alexander Garcia; Markus R. Wenk.
Lipids can be systematically classified according to functional properties, structural features, biochemical origin or biological system. However Lipid nomenclature has yet to become a robust research tool since no rigorous definitions exist for membership of specific lipid classes. Lipids need to be defined in a manner that is systematic yet at the same time semantically explicit. We report on the reuse of existing lipid nomenclature, ontology describing chemical structure and the extension of the OWL-DL Lipid Ontology to support the classification of lipid molecules. We applied definitions, DL-axioms, to describe lipids classes and illustrate suitability of the ontology for the classification of Fatty Acyl lipids and Mycolic acids.
Tipo: Presentation
Palavras-chave: Chemistry; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3590/version/2

An evaluation of taxonomic name finding &amp;#x26; next steps in Biodiversity Heritage Library (BHL) developments
Provedor de dados: 17
Autores: Chris Freeland.
The Biodiversity Heritage Library (BHL) is an international consortium of natural history libraries that are actively scanning scientific literature from their collections and publishing the digitized content online at http://www.biodiversitylibrary.org. The presentation will cover updates on BHL progress thus far, including a review of the BHL portal application and services developed for bibliographic data exchange, as well as a roadmap of features scheduled for design and development. Of interest to taxonomists and bioinformaticians, the presentation will also cover a recently completed evaluation of taxonomic name finding algorithms, including TaxonFinder and FAT. Discussion will include a review of successes and failures in extracting taxonomic name...
Tipo: Presentation
Palavras-chave: Bioinformatics; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3372/version/1

Use of semantic technologies for the development of a dynamic trajectories generator in a Semantic Chemistry eLearning platform
Provedor de dados: 17
Autores: Richard Huber; Kirsten Hantelmann; Alexandru Todor; Sebastian  Krebs; Ralf Heese; Adrian Paschke.
ChemgaPedia is a multimedia, webbased eLearning service platform that currently contains about 18.000 pages organized in 1.700 chapters covering the complete bachelor studies in chemistry and related topics of chemistry, pharmacy, and life sciences. The eLearning encyclopedia contains some 25.000 media objects and the eLearning platform provides services such as virtual and remote labs for experiments. With up to 350.000 users per month the platform is the most frequently used scientific educational service in the German spoken Internet. In this demo we show the benefit of mapping the static eLearning contents of ChemgaPedia to a Linked Data representation for Semantic Chemistry which allows for generating dynamic eLearning paths tailored to the semantic...
Tipo: Presentation
Palavras-chave: Chemistry.
Ano: 2010
URL: http://precedings.nature.com/documents/5407/version/1

Analysis of Cancer Omics Data In A Semantic Web Framework
Provedor de dados: 17
Autores: Matthew Holford; James P. McCusker; Kei Cheung; Michael Krauthammer.
Our work concerns the elucidation of the cancer (epi)genome, transcriptome and proteome to better understand the complex interplay between a cancel cell&amp;#x27;s molecular state and its response to anti-cancer therapy.  To study the problem, we have previously focused on data warehousing technologies and statistical data integration.  In this paper, we present recent work on extending our analytical capabilities using Semantic Web technology.  A key new component presented here is a SPARQL endpoint to our existing data warehouse.  This endpoint allows the merging of observed quantitative data with existing data from semantic knowledge sources such as Gene Ontology (GO).  We show how such variegated quantitative and functional data can be integrated and...
Tipo: Presentation
Palavras-chave: Cancer; Genetics &amp; Genomics; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5391/version/1

Abundance and Composition of Zooplankton (Copepoda, Cladocera, Rotifera) in Lake Taal: Potential Impact of Intensive Size-Selective Predation by the Freshwater Sardine, Sardinella tawilis (Herre 1927)
Provedor de dados: 17
Autores: Rey Donne Papa; Roberto Pagulayan; Alicia Ely Pagulayan.
Zooplankton are considered to be important members of the lake ecosystem.  The abundance and composition of which are due to several factors, for example, the impact of intensive size-selective predation by planktivorous fishes residing in the lake.  In this study, the abundance and composition of zooplankton found in the vicinity of Isla Napayun - a known fishing ground of the freshwater sardine, Sardinella tawilis (Herre 1927) was analyzed using samples taken from vertical plankton tows from the 10 and 20 m depths in 2 sampling sites from the said area.  These were then compared with the stomach contents of S. tawilis taken during the same period.  Results show that there were 4 genera of Copepoda, 4 genera of Cladocera and 2 genera of Rotifera found in...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2007
URL: http://precedings.nature.com/documents/684/version/1

Perspectives on Gene-Environment Interplay in Psychiatry
Provedor de dados: 17
Autores: Michael Rutter.
Sir Michael Rutter began the symposium with a broad overview of gene-environment interplay.&amp;#xd;&amp;#xa;He described the goals of studying such interactions and pointed to the inherent challenges.  He concluded by stressing the need for a variety of strategies for research. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch Sir Rutter&amp;#x2019;s presentation, please see the Panel 1 &amp;#x22;Google Video posting.&amp;#x22;:http://video.google.com/videoplay?docid=-3097337289947323438&amp;#x26;hl=en Panel 1 also features welcoming remarks by Dr. Mildred Cho and Professor Hank Greely, both of Stanford University. &amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2657/version/1

Edge states and possible magnetic states in nanographene and open-shell conjugated systems
Provedor de dados: 17
Autores: Kikuo Harigaya.
Nanocarbon materials are investigated intensively. In this paper, the edge-state in nanographene materials with zigzag edges is studied theoretically. In particular, while the inter-layer interactions are considered, we prove that edge states exist at the energy of the Dirac point in the doubly stacked nanographene, and in the case of the infinitely-wide lower layer case. This property applies both for the A-B and A-C stackings. We also study possible magnetic properties in fullerenes with defects and buckybowl molecules. When the number of lattice defects in C60 is even, we obtain magnetic and nonmagnetic solutions. The total energy of the nonmagnetic solution is lower than that of the magnetic solution. The occurrence of the localized spin is reduced for...
Tipo: Presentation
Palavras-chave: Chemistry.
Ano: 2009
URL: http://precedings.nature.com/documents/3880/version/1

Open Notebook Science - Falcipain-2 Preliminary Results
Provedor de dados: 17
Autores: Jean-Claude Bradley; Philip Rosenthal; Rajarshi Guha; Khalid Mirza; Jiri Gut.
This talk was presented by Jean-Claude Bradley at the American Chemical Society meeting in Philadelphia on August 20, 2008. An introduction to Open Notebook Science is presented followed by an illustration of how ONS can be used in drug discovery. New data relating to the anti-malarial activity of Ugi products on 2 falcipain-2 docking sites is detailed. The docking calculations were provided by Rajarshi Guha and the enzyme and in vitro assays on Plasmodium falciparum were provided by Phil Rosenthal and Jiri Gut. Most of the syntheses were carried out by Khalid Mirza in the Bradley group.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Screencast available at:...
Tipo: Presentation
Palavras-chave: Chemistry; Bioinformatics.
Ano: 2008
URL: http://precedings.nature.com/documents/2216/version/1

(Corrected) Osmotic stress and water isotope effects in kinesin-1 gliding motility assays
Provedor de dados: 17
Autores: Steven J. Koch; Andy Maloney; Lawrence J. Herskowitz.
The osmotic pressure and kinetic properties of water play important roles in biomolecular interactions.  As pointed out by Parsegian, Rand, and Rau, these crucial roles are often overlooked[1].  In some fields, osmotic stress and isotope effects have been exploited for probing the role water plays in binding interactions of biomolecules.  To our knowledge, there have been no studies of osmotic stress and water isotope effects for kinesin, and only a handful for myosin.  We&amp;#x27;re currently using the gliding motility assay to see whether we can extract new information about kinesin-1 / microtubule interactions by changing osmotic stress and water isotopes.  We will describe our open-source, automated analysis platform for extracting microtubule gliding...
Tipo: Presentation
Palavras-chave: Molecular Cell Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4479/version/2

An Ontology for Designing Models of Epidemics
Provedor de dados: 17
Autores: Geoffrey Frank; William Wheaton; Vesselina Bakalov; Phillip Cooley; Diane Wagener.
Models of epidemics allow decision makers to explore the consequences of different interventions. The Models of Infectious Disease Agent Study (MIDAS) project has been collecting studies, models, data supporting the models, and publications providing historical evidence about epidemics.&amp;#xd;&amp;#xa;An ontology has been developed for MIDAS to support the collection, documentation, and dissemination of models. It uses relations to link taxonomies (including a subset of the infectious disease ontology) that define the scope of its models and supporting documentation.&amp;#xd;&amp;#xa;The ontology is used to aid in the navigation process that is part of the user interface for identifying which studies and publications are available in the MIDAS repository...
Tipo: Presentation
Palavras-chave: Immunology; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3555/version/1

Soil pH, ecological stoichiometry, and allometric scaling in soil biota
Provedor de dados: 17
Autores: Christian Mulder; James J. Elser.
The factors regulating the structure of food webs are a central focus of community and&amp;#xd;&amp;#xa;ecosystem ecology, as trophic interactions among species have important impacts on&amp;#xd;&amp;#xa;nutrient storage and cycling in many ecosystems. For soil invertebrates in grassland&amp;#xd;&amp;#xa;ecosystems in the Netherlands, the site-specific slopes of the faunal biomass to organism body mass relationships reflected basic biochemical and biogeochemical processes associated with soil acidity and soil C:N:P stoichiometry. That is, the higher the phosphorus availability in the soil, the higher, on average, the slope of the faunal biomass size spectrum (i.e., the higher the biomass of large-bodied invertebrates relative to the biomass of small...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/4217/version/1

Can the nutrient dynamics of a northern hardwood forest explain variation in its trophic structure?
Provedor de dados: 17
Autores: Erik E. Stange; Matthew P. Ayres.
Background/Question/Methods: A time series of Lepidoptera larvae (caterpillar) abundance and biomass in the northern hardwood forests of central New Hampshire, USA, shows large interannual fluctuations in aggregated caterpillar biomass (52-fold variation in mg caterpillars/ 8000 leaves) that were spatially correlated across a regional landscape. Primary production of these mature forests has not varied over this period, and many hundreds of Lepidoptera species share comparatively few host plants. Therefore, interannual changes in nutritional quality of even one host plant species may be capable of generating correlated population dynamics for many species in the Lepidoptera community. We tested the hypothesis that variation in soil nutrient availability...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3859/version/1

Data integration in myGrid with Taverna
Provedor de dados: 17
Autores: Duncan Hull.
Many areas of life sciences research involve integrating terabytes of heterogeneous, &amp;#xd;&amp;#xa;distributed and autonomous data available on the Web. The myGrid project has addressed &amp;#xd;&amp;#xa;these challenging problems by developing and applying novel grid and semantic web &amp;#xd;&amp;#xa;services technology to life science data integration, particularly genome annotation and &amp;#xd;&amp;#xa;microarray analysis. This presentation outlines the past, present and future of the Taverna workflow system.&amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/331/version/1

Determination of Soybean Oil, Protein and Amino Acid Residues in Soybean Seeds by High Resolution Nuclear Magnetic Resonance (NMRS) and Near Infrared (NIRS)
Provedor de dados: 17
Autores: I. C. Baianu; Tiefeng  You; Doina Costescu; P R. Lozano; Valentin Prisecaru; Randall   L. Nelson.
A detailed account is presented of our high resolution nuclear magnetic resonance (HR-NMR) and near infrared (NIR) calibration models, methodologies and validation procedures, together with a large number of composition analyses for soybean seeds. NIR calibrations were developed based on both HR-NMR and analytical chemistry reference data for oil and twelve amino acid residues in mature soybeans and soybean embryos. This is our first report of HR-NMR determinations of amino acid profiles of proteins from whole soybean seeds, without protein extraction from the seed.  It was found that the best results for both oil and protein calibrations were obtained with a Partial Least Squares Regression (PLS-1) analysis of our extensive NIR spectral data, acquired...
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Developmental Biology; Ecology; Genetics &amp; Genomics; Molecular Cell Biology; Bioinformatics; Plant Biology; Data Standards.
Ano: 2012
URL: http://precedings.nature.com/documents/7053/version/1

Time to focus on function:  Linking microbial community structure to novel aspects of microbial function
Provedor de dados: 17
Autores: Matthew  D. Wallenstein.
*Background/Question/Methods*&amp;#xd;&amp;#xa;One of the fundamental challenges in microbial ecology is to examine how microbial communities that differ in composition may also differ in function.  Since the advent of molecular techniques, we have become increasingly proficient at analyzing community structure to fine taxonomic levels, and with ever-increasing depth of coverage.  However, we have made less progress in understanding the aspects of microbial &amp;#x2018;function&amp;#x2019; that differ between communities.  I argue that this is largely due to our traditional approach of measure microbial activities at optimal conditions in potential assays.  While this approach allows for comparisons across space or time, or in response to experimental...
Tipo: Presentation
Palavras-chave: Ecology; Microbiology.
Ano: 2009
URL: http://precedings.nature.com/documents/3648/version/1

Moisture availability influences the effect of ultraviolet-B radiation on leaf litter decomposition
Provedor de dados: 17
Autores: William K. Smith; Wei Gao; Heidi Steltzer; Matthew D. Wallenstein; Roger  Tree.
Altered surface ultraviolet-B (UV-B) radiation resulting from a combination of factors that include changes in stratospheric ozone concentrations, cloud cover, and aerosol conditions may affect litter decomposition and, thus, terrestrial nutrient cycling on a global scale.  Although litter decomposition rates vary across biomes, patterns of decomposition suggest that UV-B radiation accelerates litter decay in xeric environments where precipitation is infrequent.  However, under more frequent precipitation regimes where litter decay rates are characteristically high, the effect of UV-B radiation on litter decomposition has not been fully elucidated.  To evaluate this association between moisture regime and UV-B exposure, a litter decomposition experiment...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3634/version/1

Workspaces, exposures, and multiscale modelling
Provedor de dados: 17
Autores: David P. Nickerson.
Here I present technical details on the software package PMR2, which is the software running the CellML and Physiome Project model repositories. In particular, the use of mercurial repositories to define workspaces for collaborative model development, creating modular hierarchies of embedded workspaces, and defining exposures as a means to provide permanent links to specific revisions of model workspaces. I also briefly mention the use of OpenCMISS to link CellML models into large scale, spatially distributed field modeling and simulation.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4969/version/1

Integrating Open Lab Notebooks with Online Databases
Provedor de dados: 17
Autores: Carl Boettiger.
My slides from a presentation and panel discussion on integrating open lab notebooks with online databases.  A video archive of the presentation is available here: http://vimeo.com/20100632
Tipo: Presentation
Palavras-chave: Data Standards.
Ano: 2012
URL: http://precedings.nature.com/documents/6853/version/1

Nanotechnology in Agriculture: Propagating, Perpetuating, and Protecting Life
Provedor de dados: 17
Autores: Siddhartha S. Mukhopadhyay.
Natural agricultural production is an open system, both energy and matters are exchanged freely in this system involving interactions of geosphere (especially pedosphere), biosphere, and atmosphere. Agriculture provides crops for food and industry, fiber, fuel, auto-fuel and drugs. On one hand it faces ever escalating food prices and farmer&amp;#x2019;s suicides, and on the other hand input use efficiency is low. Present agricultural practices have made harvests toxic, mother&amp;#x2019;s milk a poison, and breathing-air venom. In this background, nanotechnology brings new hope. Nanotechnology is an interdisciplinary venture-field that converge science, engineering, and agriculture and food systems into one. The Environmental Protection Agency of the US...
Tipo: Presentation
Palavras-chave: Chemistry; Ecology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/5808/version/1

Updates to the SBML Level 3 Flux Balance Constraints (FBC) package
Provedor de dados: 17
Autores: Brett B. G. Olivier.
In this presentation I introduce the need for an SBML package and introduce recent updates to the proposal.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The Flux Balance Constraints package is a proposed SBML Level 3 extension that allows the definition of constraint based (a.k.a steady state, flux balance analysis, FBA) models.
Tipo: Presentation
Palavras-chave: Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6352/version/1

Quantum stochasticity and neuronal computations
Provedor de dados: 17
Autores: Peter Jedlicka.
The nervous system probably cannot display macroscopic quantum (i.e. classically impossible) behaviours such as quantum entanglement, superposition or tunnelling (Koch and Hepp, Nature 440:611, 2006). However, in contrast to this quantum &amp;#x2018;mysticism&amp;#x2019; there is an alternative way in which quantum events might influence the brain activity. The nervous system is a nonlinear system with many feedback loops at every level of its structural hierarchy. A conventional wisdom is that in macroscopic objects the quantum fluctuations are self-averaging and thus not important. Nevertheless this intuition might be misleading in the case of nonlinear complex systems. Because of a high sensitivity to initial conditions, in chaotic systems the...
Tipo: Presentation
Palavras-chave: Neuroscience.
Ano: 2009
URL: http://precedings.nature.com/documents/3702/version/1

The joys and perils of recombination - The hotspot conversion paradox and the evolution of recombination
Provedor de dados: 17
Autores: Mario Pineda-Krch; Rosemary J. Redfield.
The contradiction between the long-term persistence of the chromosomal hotspots that initiate meiotic recombination and the self-destructive mechanism by which they act strongly suggests that our understanding of recombination is incomplete. To investigate the requirements for hotspot persistence, Rosemary Redfield and I developed a computer simulation model, hotspot, of their activity and its evolutionary consequences.
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Evolutionary Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/3636/version/1

The What, Why and How of openness in science
Provedor de dados: 17
Autores: Konrad U. Foerstner; Lars J. Jensen.
We give a short introduction to open science followed by an overview of Creative Commons and open source licenses.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2008
URL: http://precedings.nature.com/documents/1655/version/1

Online Human Health Risk Assessment &amp;#x26; Management: An in-silico approach
Provedor de dados: 17
Autores: Lavkush Dwivedi.
Dreamed quality of life can be achieved by good health and further restored and maintained by the identification of health-related issues and their effective management. Human health risk assessment &amp;#x26; management (HHRAM) approaches are applied for doing so. As internet is now increasingly being used by citizens as a major source of health information, the HHRAM approach was developed in the present study which could predict and manage online the health risks associated with any possible health hazard present in an Indian scenario. The approach is communicated to the entire population through the developed website www.healthrisk.co.in.&amp;#xd;&amp;#xa;The study was completed in three phases (1) Preparation of online health risk assessment...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5357/version/1

Quantitation of 55 Common Human Plasma Proteins in Healthy Young Adults and Correlation with Body Mass Index and Dietary Patterns
Provedor de dados: 17
Autores: Bibiana  Garcia-Bailo; Darren Brenner; Daiva Nielsen; Hyeon-Joo Lee; Christoph Borchers; Alaa  Badawi; Mohamed Karmali; Ahmed El-Sohemy.
Plasma biomarkers are a useful tool for monitoring dietary exposures and the development of chronic disease. Measuring multiple biomarkers at once provides a more complete characterization of phenotype than measuring single markers. Certain dietary patterns have been associated with increased risk of obesity. Adhering to a &amp;#x2018;Western&amp;#x2019; dietary pattern, characterized by high consumption of meat products and low fruit and vegetable consumption, may put individuals at a higher risk of becoming overweight or obese than a &amp;#x2018;Prudent&amp;#x2019; or an &amp;#x2018;Eastern&amp;#x2019; dietary pattern. A novel mass spectrometry-based multiple reaction monitoring (MRM) proteomics assay was used to quantitate 55 common plasma proteins that...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2010
URL: http://precedings.nature.com/documents/5322/version/1

A new phylogenetic comparative method: detecting niches and transitions with continuous characters
Provedor de dados: 17
Autores: Carl Boettiger.
Traditional information criteria approaches can lead to misleading model choice in comparative phylogenetics. I present examples of these weaknesses using a classic data set on Anoles lizards.  I describe a more robust comparison by likelihood ratio. I then discuss a new class of models to capture the transition process between evolutionary regimes.
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4615/version/1

Community curation on WikiPathways: How we assist knowledge collection
Provedor de dados: 17
Autores: Chris Evelo.
Biologists typically use knowledge represented as pathways to better understand the results of genomics experiments. Through integration of data from different omics techniques with what we already know, statistical evaluation and subsequent data visualization the results often start to make sense. An important problem is that we often do not have the relevant pathways, or they may be incomplete or not suitable for usage by analytical tools. Wikipathways is meant to be an answer to the problems described above. It uses mediawiki technology and dedicated open source java code to allow biologists to edit pathway content on the web. We assist this process through the development of helpful software like a Diff tool, Go and KEGG converters, portal mechanism,...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3115/version/1

The plural of anecdote is not data: Rigorously testing a boreal forest chronosequence
Provedor de dados: 17
Autores: Ben Bond-Lamberty; Chuankuan Wang; Stith T. Gower.
&amp;#x22;Forests appear stable because the ecologists who study them die.&amp;#x22; The chronosequence, with its space-for-time substitution, is a widely-employed workaround for a difficult problem: many interesting ecosystem processes occur at much longer time scales than researchers can afford to spend studying them. But their use is problematic, particularly for vegetation succession but also for biogeochemical cycling: having sites of different ages is only a necessary, and not a sufficient, condition. How do we test the validity and representativeness of a chronosequence, particularly given ecosystem variability in time and space? &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Here we use data from an intensively-studied group of stands in northern Manitoba,...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3599/version/1

Keynote: A renaissance for the point mutation: from legacy data to semantic web service
Provedor de dados: 17
Autores: Christopher J. O. Baker.
Experiments that construct or discover protein point-mutations and investigate their functional consequences represent one of the cornerstones of biomedical investigation. And yet, despite the importance of these annotations, the interpretation and reuse of knowledge about their impacts remains a formidable task. This is due to a number of reasons including (i) the publishing of salient mutation impact descriptions in unstructured text, (ii) the existence of numerous boutique databases of mutation information which can have many years of latency, and (iii) errors within manually populated mutation databases. In recent years the mining of mutations from scientific documents has emerged as a promising research theme resulting in automated methods for...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5443/version/1

SSR - Identification from EST
Provedor de dados: 17
Autores: Aikkal Riju.
Tutorial of Identification of SSR from EST resources using online Tools
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3908/version/1

Predicting patterns of stress and mortality in intertidal invertebrates:  applications of biophysical ecology in a changing world
Provedor de dados: 17
Autores: Brian Helmuth; Michael Kearney; Gianluca Sar&amp;#xe1;.
Background, Questions and Methods&amp;#xd;&amp;#xa;Recent studies have emphasized that local and geographic patterns of species distributions can be set by a variety of factors related to weather and climate, including exposure to lethal environmental conditions, indirect effects on consumers and competitors, and sublethal effects of physiological stress on growth and reproduction.  Predicting where, when and with what magnitude these impacts are most (and least) likely to occur is imperative if we are to effectively plan for (i.e. adapt to) the effects of climate change.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;We developed a series of methods for translating patterns of environmental &amp;#x201c;signals&amp;#x201d; into organismal responses in intertidal...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/5211/version/1

Ecoinformatics: where are we, where do we want to go, and how to reach there.
Provedor de dados: 17
Autores: Abhay Krishna.
Compared to other natural sciences ecological sciences has always been about seeing the bigger picture. The realization that local actions can have global impact has been the hallmark of ecological research. This integrative view is getting more and more accepted now with the recognition that whole is definitely more then sum of its parts. Advancement in computer sciences has now made it possible to comprehend the complexity arising from an integrative approach. This has given rise to a field interfacing computer science and ecological sciences called Ecoinformatics. The other popular parallel and more mature field is bioinformatics or computational biology. The presentation will take the audience on an Ecoinformatics tour touching on present status of...
Tipo: Presentation
Palavras-chave: Ecology; Bioinformatics; Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2018/version/1

Mining the Largest Quasi-clique in Human Protein Interactome
Provedor de dados: 17
Autores: Sanghamitra Bandyopadhyay; Malay Bhattacharyya.
A clique is a complete subgraph of a graph. Often, a clique is interpreted as a dense module of vertices within a graph. However, in many real-world situations, the classical problem of finding a clique is required to be relaxed. This motivates the problem of finding quasicliques that are almost complete subgraphs of a graph. In sparse and very large scale-free networks, the problem of finding the largest quasi-clique becomes hard to manage with the existing approaches. Here, we propose a heuristic algorithm in this paper for locating the largest quasi-clique from the human protein-protein interaction networks. The results show promise in computational biology research by the exploration of significant protein modules.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2012
URL: http://precedings.nature.com/documents/7125/version/1

Behavioral origins of metabolic syndrome disorders
Provedor de dados: 17
Autores: Milind Watve; Maithili Jog; Prajakta Belsare.
The metabolic syndrome disorders (MSD) including type 2 diabetes, hypertension, hypercholesterolemia, atherosclerosis and cardiovascular disease are known to be triggered by lifestyle change. We state and support a hypothesis here that changes in behavior rather than changes in diet and metabolism are central to MSD. We provide and discuss evidence in support of the following sequence of arguments. (i) Diet, thriftiness and obesity centered paradigm is inadequate to explain most of the physiological and immunological changes associated with metabolic syndrome disorders (MSD).  (ii) Comparative studies show that relative obesity rather than absolute obesity is strongly associated with various parameters of MSD and further perception of calories without...
Tipo: Presentation
Palavras-chave: Neuroscience.
Ano: 2010
URL: http://precedings.nature.com/documents/4833/version/1

Mining Co-expression Graphs: Applications to MicroRNA Regulation and Disease Analysis
Provedor de dados: 17
Autores: Malay Bhattacharyya.
MicroRNAs (miRNAs) are known to translationally repress or post-transcriptionally regulate mRNAs and are responsible for many diseases. We are preparing a comprehensive framework of co-expression analysis to figure out co-expression, differential co-expression and co-expression dynamics within multiple phenotypes in expression profiles. The purpose is to elucidate the disease association of miRNAs via co-regulatory pattern analysis.
Tipo: Presentation
Palavras-chave: Cancer; Molecular Cell Biology; Bioinformatics.
Ano: 2012
URL: http://precedings.nature.com/documents/7119/version/1

Integrating Text Mining into the MGI Biocuration Workflow
Provedor de dados: 17
Autores: Karen G. Dowell; Monica S. McAndrews-Hill; David P. Hill; Harold J. Drabkin; Judith A. Blake.
A major challenge for the development of resources for functional and comparative genomics is the extraction of data from the biomedical literature.  Although text retrieval and extraction for biological data is an active research field, few applications have been integrated into production literature curation systems such as those of the model organism databases.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;In September 2008, Mouse Genome Informatics (MGI) at The Jackson Lab initiated a search for dictionary-based text mining tools that we could integrate into our curation workflow.  MGI has rigorous document triage and annotation procedures designed to identify articles about mouse genome biology and determine whether those articles should be curated.  We...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3262/version/1

LibSBGN: current status and future plans
Provedor de dados: 17
Autores: Alice C. Villeger.
LibSBGN is a community project started in 2009: it aims at facilitating the development of SBGN-compliant tools, and improving interoperability between these tools.&amp;#xd;&amp;#xa;These goals will be achieved by defining a standardized electronic implementation of the Systems Biology Graphical Notation: an XML-based file format (SBGN-ML), complemented by a software library (LibSBGN).&amp;#xd;&amp;#xa;The project is organized around a number of online tools, which allow the community to discuss problems, share ideas, and formalize solutions.&amp;#xd;&amp;#xa;Current versions of SBGN-ML and LibSBGN have already been adopted by three different SBGN-compliant tools. The first official release of SBGN-ML is imminent.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;For...
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5304/version/1

Systems Pharmacology
Provedor de dados: 17
Autores: Ravi Iyengar.
The slides are from a presentation given by Professor Ravi Iyengar from Mount Sinai School of Medicine at the Drug Forum Meeting #9 that took place in Washington, DC on February 20-21, 2008. The slides describe two projects: one that was published last year, and the other unpublished. These projects used network analysis to explore the relationships between FDA approved drugs and a human protein-protein interaction network.
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Pharmacology; Bioinformatics.
Ano: 2008
URL: http://precedings.nature.com/documents/1749/version/1

Standardising bioresource acknowledgement in papers
Provedor de dados: 17
Autores: Dr Robert Hewitt.
This presentation describes the speakers experience of gathering performance indicator data, for biobank assessment.  Problems encountered in collecting data on the number of publications resulting from supported studies are described.  These include difficulty in obtaining a complete record of all the resulting publications and also frequent misnaming of the biobank in the acknowledgment section of papers.  The presentation also includes a discussion of approaches to providing credit to all the contributors in the biobanking effort.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/5607/version/1

Development of Integrative Bioinformatics Applications using Cloud Computing resources and Knowledge Organization Systems (KOS).
Provedor de dados: 17
Autores: Jonas Almeida; Helena Deus; Wolfgang Maass.
Use of semantic web abstractions, in particular of domain neural Knowledge Organization Systems (KOS), to manage distributed, cloud based, integrative bioinformatics infrastructure. This presentation derives from recent publication:&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Almeida JS, Deus HF, Maass W. (2010) S3DB core: a framework for RDF generation and management in bioinformatics infrastructures. BMC Bioinformatics. 2010 Jul 20;11(1):387. [PMID 20646315].&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;These PowerPoint slides were presented at Semantic Web Applications and Tools for Life Sciences December 10th, 2010, Berlin, Germany (http://www.swat4ls.org/2010/progr.php), keynote 9-10 am.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5537/version/1

Nanotoxicity Assessment toward the Applications of Carbon Nanotubes as a Small Biomolecule Carrier in Drug Delivery Systems
Provedor de dados: 17
Autores: Rakesh  Sharma; Soonjo  Kwon; R Baktur; Avdhesh Sharma.
Carbon Nanotube (CNT) materials have superior properties in electric current carrying capacity, thermal conductivity, and thermal stability. Due to their structure with high aspect ratio, they have structural unusual toxicity and complicate safety issue in a target tissue.  In optimized quantities with limited functionality, special type of CNT assembly such as &amp;#x201c;buckyball&amp;#x201d; can be used as a potential drug carrier of bioactive molecules and display with increased circulating time and acceptable functionality.  We analyzed cytoxicity and inflammatory response following exposure of different size, mass, shape, and functionality of CNTs. We monitored the transport across skin, physiological perturbation of transepithelial electrical...
Tipo: Presentation
Palavras-chave: Biotechnology.
Ano: 2009
URL: http://precedings.nature.com/documents/3948/version/1

The Simulation Experiment  Description Markup Language - Update
Provedor de dados: 17
Autores: Frank T. Bergmann.
This presentation gives a brief overview of the Simulation Experiment Description Markup Language L1V1 as well as an introduction to LibSedML (http://libsedml.sf.net) a library for reading and writing SED-ML documents.
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5589/version/1

SBGN-ED &amp;#x2013; working with the Systems Biology Graphical Notation
Provedor de dados: 17
Autores: Tobias Czauderna; Falk Schreiber.
The Systems Biology Graphical Notation - SBGN [1] provides a standard for the visual representation of biochemical and cellular processes. SBGN aims to improve information exchange and to support the collaborative creation of large maps based on individual modules. The language contains three views of biological processes covering different levels of detail:&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;(1) Process Description (PD): this sublanguage provides a detailed presentation of the temporal dependencies of biological  interactions in a network;&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;(2) Entity Relationship (ER): this sublanguage displays the relationships in which a given entity can participate in a network; and&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;(3) Activity Flow...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6445/version/1

The hypothalamic genesis of obesity
Provedor de dados: 17
Autores: Daniel Oscar Belluscio.
The theories on obesity genesis shifted during the past years from the simple conception of &amp;#x22;just overeating&amp;#x22; to data supporting the diencephalic origin of the disease. Summarized findings on this issue are displayed.
Tipo: Presentation
Palavras-chave: Neuroscience.
Ano: 2012
URL: http://precedings.nature.com/documents/7031/version/1

BioModels Database: Next generation model repository
Provedor de dados: 17
Autores: Camille Laibe; Michael Hoehl.
Public announce that the software system running BioModels Database (&amp;#x22;http://www.ebi.ac.uk/biomodels/&amp;#x22;:http://www.ebi.ac.uk/biomodels/) will evolve from open source to a community developed project.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5127/version/1

Understanding and mapping water resources by multidimensional statistics and fuzzy logic: Missouri River basin case
Provedor de dados: 17
Autores: Boris Shmagin; Din Chen.
Time series from 46 gauging station with drainage areas from 113 to 398 sq mi in the Upper Missouri River basin with mutual period of observation from 1963 to 1991 were used for analysis. Factor analysis of average annual flow revealed five patterns of river runoff within four distinct subregions of the territory (east, two carbonate karsts areas, uplands). This factor model reflected 62% variance of initial matrix.  Each of four groups of watersheds obtained as a factor was presented by one gauging station with time series of annual and monthly discharges (I- 06218500, II- 06478690, III- 06412500, and IV- 06323000). Streams represented by patterns I, II and IV have increase of values and those represented by III have a decrease. The positive trend for...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2007
URL: http://precedings.nature.com/documents/1071/version/1

libSBML New conversion API
Provedor de dados: 17
Autores: Sarah M. Keating; Frank T. Bergmann.
Description of the new API for including converters within libSBML.
Tipo: Presentation
Palavras-chave: Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6395/version/1

SBGN Activity Flow Update
Provedor de dados: 17
Autores: Huaiyu Mi.
SBGN Activity Flow specification was released in September 2009.  In this talk, a brief review is provided on the specification, and a number of issues raised by the community are discussed.  Particular focus was on the issue of graphical representation of entity decoration of a biological activity.  A number of proposals from the community are discussed in detail.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/5680/version/1

Microbial adaptations to envrionmental change: a moving target for global change ecology
Provedor de dados: 17
Autores: Matthew D. Wallenstein; Sarah Evans.
Background/Question/Methods &amp;#xd;&amp;#xa;As the abiotic conditions that structure biological communities and elicit physiological responses continue to change at an unprecedented rate, we need to understand how biological responses to global change will affect ecosystem functioning. A number of studies have detected shifts in the structure of microbial communities in response to experimental warming, elevated CO2 altered&amp;#xd;&amp;#xa;precipitation, and increased N deposition. However, since the links between microbial phylogeny and function are poorly understood, it can be challenging to predict how these changes in community structure will affect the rates of specific processes. It is often assumed that the high diversity of microbial communities...
Tipo: Presentation
Palavras-chave: Ecology; Microbiology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/5510/version/1

Integrative analysis of large-scale  biological data sets
Provedor de dados: 17
Autores: Enrico Glaab; Jonathan M. Garibaldi; Natalio Krasnogor.
We present two novel web-applications for microarray and gene/protein set analysis, ArrayMining.net and TopoGSA. These bioinformatics tools use integrative analysis methods, including ensemble and consensus machine learning techniques, as well as modular combinations of different analysis types, to extract new biological insights from experimental transcriptomics and proteomics data. They enable researchers to combine related algorithms and datasets to increase the robustness and accuracy of statistical analyses and exploit synergies of different computational methods, ranging from statistical learning to optimization and topological network analysis.
Tipo: Presentation
Palavras-chave: Cancer; Genetics &amp; Genomics; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5598/version/1

Artificial Neural Network
Provedor de dados: 17
Autores: Smrita Singh.
In the postgenomic era, computational methods are being used in diverse areas like drug discovery, robotics, weather forecasting etc. Computational methods are incorporated with various programmes that are further instructed with complex algorithms based on different logistic approaches. Artificial neural network is one of them to be utilized in various molecular dynamics and simulation studies. Therefore, it is essential to understand the basic logic while programming in order to troubleshoot the computational methods.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6623/version/1

An Advanced Clinical Ontology
Provedor de dados: 17
Autores: Riichiro Mizoguchi; Kouji Kozaki; Hiroko Kou; Ken Imai; Kazuhiko Ohe.
This article discusses a fundamental issues of medical ontology based on ontological theory. We focus on &amp;#x22;anatomical structure of organs&amp;#x22; and &amp;#x22;abnormal states in the human body&amp;#x22;. On the basis of the investigation, we distinguish organ-specific types from those independent of any organ to maximize the explicitness of ontology. The next feature of our ontology is to allow on-demand reorganization of is-a hierarchy of diseases instead of one fixed hierarchy to cope with various viewpoints which physician might have. We also take care of the notorious issue related to conflict of is-a and part-of relations.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3506/version/1

SemanticSBML &amp;#x2013; state of affairs
Provedor de dados: 17
Autores: Wolfram Liebermeister; Falko Krause; Marvin Schulz; Timo Lubitz.
A number of new functions in the software tool semanticSBML make extensive use of MIRIAM-compliant annotations in SBML models. Semantic model search allows to obtain, from BioModels Database, a ranked list of models resembling a given query model or data set. Model clustering allows for exploring and visualising similarities among large numbers of SBML models. Parameter balancing uses collected kinetic constants - retrieved by using semantic annotations - to infer consistent sets of model parameters.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4987/version/1

Side effect profile prediction - Tackling Big Pharma&amp;#x27;s worst nightmare at an early stage
Provedor de dados: 17
Autores: Josef Scheiber.
This talk presents a method that predicts adverse side effects for molecules based on the chemical structure only. Also, targets for the compounds are predicted. Therefore it becomes possible to link a certain side effect to the interaction with a certain target through molecular space. Examples are given in the talk.
Tipo: Presentation
Palavras-chave: Chemistry; Pharmacology; Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/1239/version/1

In silico designing of activator for human IGF2 protein for effective cardiovascular disease therapeutics
Provedor de dados: 17
Autores: M Sandhya rani; Manne  Munikumar; Amineni  Umamaheswari.
Insulin like growth factor-II (IGF2) is a member of IGF family, the main role of IGF2 is as a growth hormone during gestation or fetal development. Ischematic stroke, atherosclerosis and pathological cardiac hypertrophy are associated with low circulating levels of IGF2. 5-aza-2&amp;#x2019;-deoxycytidine increases the activity of IGF2, due to high toxicity of 5aza2&amp;#x2019;deoxycytidine, some silenced genes are also expressed that cause various cancer diseases. In the present study an in silico approach was used to design the potential activator for IGF2 without side effects to treat cardiovascular diseases. Ligand binding sites were predicted using CASTp for drug target. 361 ligand analogs for 5-aza-2&amp;#x2019;-deoxycytidine were identified through...
Tipo: Presentation
Palavras-chave: Pharmacology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6558/version/1

JSBML update
Provedor de dados: 17
Autores: Andreas Dr&amp;#xe4;ger; Nicolas Rodriguez.
This presentation gives an overview about the major changes in JSBML since the release of version 0.8-b1, which will become part of the first release candidate.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6358/version/1

Dynamic Topology of Biological Networks
Provedor de dados: 17
Autores: Ravi Iyengar.
The mammalian cell can be represented as a large modular network that consists of a central signal network that interacts with and regulates multiple cellular machines that are responsible for phenotypic behavior.  We have used graph-theory approaches to analyze signal flow through a network representing the hippocampal neuron and find that signal-induced connectivity results in the formation of many regulatory motifs. Information flow through the central signaling network is initiated by extra-cellular signals such as hormones binding to their receptors. The flow of information through the signaling network results in the appearance of regulatory motifs such as feedback loops, feedforward and bifan motifs. Within the large cellular networks, these...
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Neuroscience; Pharmacology; Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/24/version/1

Virtual screening to design drug molecules for human proto oncogene Fyn kinase
Provedor de dados: 17
Autores: Manne Mannekumar; Pasupuleti Sravana lakshmi; Ikkurthi  Vani Priyadarshini; Dibyabhaba Pradhan; Amineni Umamaheswari.
Human Fyn tyrosine kinase, a Src-family enzyme plays a pivotal role in the integrin mediated cell signaling pathway and is known to interact with several molecular signals including FAK and paxillin that accounts for morphogenic transformation leading to cancer. The present study was aimed to design a persuasive inhibitor for Fyn kinase. The crystal structure was optimized and energy minimized applying OPLS2001 force field in Maestro v9.0. The inhibitor binding site residues such as LEU-17, GLY-18, ASN-19, VAL-25, ALA-37, LYS-39, GLU-54, THR-82, GLU-83, TYR-84, MET-85, GLY-88, ALA-134, ASN-135, LEU-137, and ASP-148 were located from the Fyn kinase co-crystal structure with staurosporine. Three published inhibitors (staurosporine, Rosmarinic acid and...
Tipo: Presentation
Palavras-chave: Cancer; Pharmacology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6108/version/1

Environmental modelling and Web 2.0 - using Connotea to share XML-represented information
Provedor de dados: 17
Autores: Robert Muetzelfeldt.
Much academic information can be represented in a structured way and published on the web as XML documents.   Such information can then be displayed in a wide variety of ways, using different XSLT stylesheets.   &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;This presentation presents MultiGuise, a Web application which allows any of several XML documents to be displayed using any of several stylesheets.   Both the documents and the stylesheets are bookmarked in Connotea, from where MultiGuise retrieves them using a special tag.   This approach means that anyone can add documents and stylesheets, simply by bookmarking them in Connotea.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The approach is illustrated primarily with environmental models represented in XML, but also with...
Tipo: Presentation
Palavras-chave: Ecology; Bioinformatics; Earth &amp; Environment.
Ano: 2007
URL: http://precedings.nature.com/documents/18/version/1

Integrating genomics, transcriptomics, proteomics, and metabolomics into environmental enzymology:  the next frontier or fool&amp;#x27;s gold?
Provedor de dados: 17
Autores: Matthew D. Wallenstein.
Extracellular enzymes are widely measured as indices of microbial activity, resource allocation, and substrate availability.  However, interpretation of enzyme activities is hampered by a limited understanding of controls on enzyme production, turnover, and in-situ activity.  In part, this is the consequence of methodological limitations, which require artificial substrates and are conducted under conditions that differ from in situ conditions.  Recently, new tools have emerged that have potential to provide new insights into microbial enzymology. Will these methods open a new frontier in enzymology research, or will they only result in the discovery of fool&amp;#x2019;s gold? I will highlight how genomic, transcriptomic, proteomic, and metabolomic tools...
Tipo: Presentation
Palavras-chave: Ecology; Microbiology; Bioinformatics; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/6159/version/1

Electronic Nose Technology to Measure Soil Microbial Activity and Classify Soil Metabolic Status
Provedor de dados: 17
Autores: Fabrizio De Cesare; Elena Di Mattia; Simone Pantalei; Emiliano Zampetti; Vittorio Vinciguerra; Antonella Macagnano.
The electronic nose (E-nose) is a sensing technology that has been widely used to monitor environments in the last decade. In the present study, the capability of an E-nose, in combination with biochemical and microbiological techniques, of both detecting the microbial activity and estimating the metabolic status of soil ecosystems, was tested by measuring on one side respiration, enzyme activities and growth of bacteria in natural but simplified soil ecosystems over 23 days of incubation through traditional methodologies, and on the other side VOCs and/or gases evolution in their headspace during the same period through the E-nose. Both kinds of measurements, i.e. biochemical-microbiological and sensorial, succeeded in discriminating between inoculated...
Tipo: Presentation
Palavras-chave: Ecology; Microbiology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/6364/version/1

Local winter deer density: Effects of forest structure and snow in a managed forest landscape
Provedor de dados: 17
Autores: James D. A. Millington; Michael B. Walters; Megan S. Matonis; Jianguo Liu.
*Background/Questions/Methods*&amp;#xd;&amp;#xa;White-tailed deer (_Odocoileus virginianus_) are a &amp;#x2018;keystone herbivore&amp;#x2019; with the potential to cause tree regeneration failure and greatly affect vegetation dynamics, stand structure and ecological function of forests across eastern North America. In northern mixed conifer-hardwood forests, local winter-time deer populations are dependent on habitat characterized by patterns of forest cover that provide shelter from snow and cold temperatures (lowland conifer stands) in close proximity to winter food (deciduous hardwood stands). Stand structure may also influence winter spatial deer distribution. Consequently, modification of forest cover patterns and stand structure by timber harvesting...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3666/version/1

21 Tesla Rat Heart Magnetic Resonance Microimaging by Paramagnetic Anti-Troponin Bound Polyethylene Based Iron-Oxide Nanoparticles and Image Processing
Provedor de dados: 17
Autores: Rakesh Sharma.
21T MR microimaging with the first use of troponin nanoparticles enhances the visualization of cardiac muscle fibers and offers technical advancement for the future. Diffusion weighting offers fiber tracking and functional analysis. Image processing offers heart probabilistic atlas and maps.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;http://www.ismrm.org/10/program/ELECTRONICPOSTERS.htm
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6650/version/1

ABC Methods for Bayesian Model Choice
Provedor de dados: 17
Autores: Christian P. Robert.
Approximate Bayesian computation (ABC), also known as likelihood-free  methods, have become a standard tool for the analysis of complex models, primarily in population genetics but also for complex financial models. The development of new ABC methodology is undergoing a rapid increase in the past years, as shown by multiple publications, conferences and even software. While one valid interpretation of ABC based estimation is connected with nonparametrics, the setting is quite different for model choice issues. We examined in Grelaud et al. (2009, Bayesian Analysis) the use of ABC for Bayesian model choice in the specific of Gaussian random fields (GRF), relying on a sufficient property only enjoyed by GRFs to show that the approach was legitimate. Despite...
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5961/version/1

DNA SEQUENCE PATTERNS
Provedor de dados: 17
Autores: Sriram Kannan.
There is significance in the molecular weight derived sequence patterns of adenosine, guanosine, cytosine, thymine, methyl cytosine and hydroxyl methyl cytosine if one has to consider the molecular events holistically by including single nucleotide polymorphisms, tumor suppressor gene activity like that of ten eleven translocation gene, CpG methylation, miRNA SNP patterns and SNPs neighboring CpGs. This research article focuses on observing simulation results of validated SNPs in a sequence using substitution patterns of molecular weight of A, G, C, T, 5OHC, 5MC.  The outcome helped to bring out positions in a DNA sequence where in validated bi allelic SNPs were never found to occur and SNPs neighboring methylated CpGs do show disconcordance and a...
Tipo: Presentation
Palavras-chave: Cancer; Genetics &amp; Genomics; Bioinformatics; Evolutionary Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4933/version/1

UniProt Knowledgebase: a hub of integrated data
Provedor de dados: 17
Autores: Michele Magrane; UniProt Consortium.
Data integration plays an increasingly important role in bringing together the large amounts of diverse information spread across disparate resources and presenting a comprehensive overview of these data to the scientific community. The UniProt Knowledgebase (UniProtKB) acts as a central hub of protein knowledge by providing a unified view of protein sequence and functional information. Manual and automatic annotation procedures are used to add data directly to the database while extensive cross-referencing to more than 120 external databases provides access to additional relevant information in more specialised data collections. UniProtKB also integrates data such as protein sequences, protein-protein interactions, Gene Ontology terms and official gene...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5092/version/1

Copper and other heavy metals in specialized crops and their effects on soil coenosis
Provedor de dados: 17
Autores: Anna Steindl; Thomas Strumpf; Frank Riepert.
The background of the project are claims of the EU regulation to generate reliable data considering the extent of copper contamination in soils of specialized crops in order to decide about copper restrictions in organic farming.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;2522 single soil samples were collected on 85 vineyard and 13 hop areas with different management histories. Samples were taken from sites presently under cultivation, formerly cultivated, and sites without anthropogenic copper contamination as control, indicating natural background values. In addition to Aqua Regia extraction for determining total copper contents, available plant copper content was analyzed in NH~4~NO~3~ extraction. Soil parameters such as pH-value, C/N ratio, soil type etc....
Tipo: Presentation
Palavras-chave: Chemistry; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5737/version/1

Endoscopy
Provedor de dados: 17
Autores: Perumal P.
Endoscopy is a minimally invasive diagnostic medical procedure that is used to assess the interior surfaces of an organ by inserting a tube into the body. The instrument may have a rigid or flexible tube and not only provide an image for visual inspection and photography, but also enable taking biopsies and retrieval of foreign objects. Endoscopy is the vehicle for minimally invasive surgery and patients may receive conscious sedation so they do not have to be consciously aware of the discomfort. Many endoscopic procedures are considered to be relatively painless and, at worst, associated with moderate discomfort.
Tipo: Presentation
Palavras-chave: Developmental Biology; Microbiology.
Ano: 2012
URL: http://precedings.nature.com/documents/7064/version/1

Informativeness of St14 VNTR Polymorphic Marker in the Carrier Detection of Hemophilia A
Provedor de dados: 17
Autores: Beenish Arif; Atif A. Baig; Saqib Mahmood; Mohammad Naeem.
Hemophilia A is the most common hereditary severe disorder of blood clotting. In families affected with hemophilia, genetic analysis provides opportunities to prevent recurrence of the disease. This study establishes a diagnostic strategy for carrier-ship determination in Pakistani population using an extragenic polymorphic marker for the first time. The analysis of St14 VNTR (DXS52) was carried out by polymerase chain reaction (PCR), in order to determine its informativeness in terms of heterozygosity in Pakistani population. This may be a milestone for further analysis of other polymorphic markers for carrier detection and prenatal diagnosis of hemophilia. Seventy eight blood samples (Hemophiliac = 23, Normal = 55) from 15 families were analyzed for...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2010
URL: http://precedings.nature.com/documents/4272/version/1

Development of Incentives for Data Sharing in Ecology, Evolution, and Organismal Biology
Provedor de dados: 17
Autores: Clifford S. Duke.
Ready access to data is a key concern in both basic research and problem-solving in the biological sciences, as the scale and scope of the questions that researchers ask expand, and as global problems demand data collected from around the world. With a grant from the National Science Foundation, from 2004 through 2009, the Ecological Society of America (ESA) has led a series of five workshops on data sharing, to help the ecology, evolution, and organismal biology communities find common ground on how to make data more readily discoverable and accessible in their own disciplines. The most recent of these focused in the development of incentives for data sharing, both at the individual and organizational level. This presentation will summarize the workshop...
Tipo: Presentation
Palavras-chave: Ecology; Evolutionary Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/3647/version/1

Spatial Variability in Soil Microbial Communities in a Nitrogen-Saturated Hardwood Forest Watershed
Provedor de dados: 17
Autores: Frank S. Gilliam.
The long-term reference watershed (WS4), at Fernow Experimental Forest, West Virginia, displays symptoms of N saturation despite considerable spatial heterogeneity in soil properties, such as texture, N pools, and cycling rates. We identified a weathering gradient of three sites within WS4 by assessing differences in clay content across a common geologic substrate. Across these sites (LN, MN, and HN), NO3 production rates vary significantly (low, medium, and high nitrification, respectively) and are negatively related to clay content. It is unknown whether microbial communities vary across these sites and contribute to variability in NO3 production. This study characterized soil microbial communities along this gradient and assessed factors potentially...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5219/version/1

CDAO-Store: A New Vision in Data Integration
Provedor de dados: 17
Autores: Brandon Chisham; Trung Le; Enrico Pontelli; Tran Son; Ben Wright.
The Comparative Data Analysis Ontology (CDAO)  is an ontology developed, as part of the EvoInfo and EvoIO groups supported by NESCent, to provide semantics to the descriptions of data and transformations commonly found in the domain of phylogenetic inference. The core concepts of the ontology enables the description of phylogenetic trees and associated character data matrices. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;CDAO-store is a repository providing a rich set of API&amp;#x2019;s for querying and visualizing phyloinformatics data. It is a triple-store encoding data as RDF triples constructed according to the CDAO concept vocabulary. CDAO-store provides three classes of services: a service for importing data in CDAO format, a PhyloWS interface supporting an...
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4586/version/1

Reconsidering the New Normal: Trauma, Vulnerability &amp;#x26; Resilience in Post-Katrina New Orleans
Provedor de dados: 17
Autores: Michael J. Blum; Kevin Gotham; John  A. McLachlan; Wayne Zipperer; Richard Campanella.
Traumatic anthropogenic or natural disasters can redefine the ecological and social diversity of cities, with &amp;#x22;new normal&amp;#x22; conditions often emerging in post-trauma urban landscapes. The objective of our ULTRA project is to examine how the pace and trajectory of recovery in post-Katrina New Orleans reflect ecological and social diversity. Specifically, we are examining potential parallels and interactions between ecological and social diversity within and among neighborhoods, and across the New Orleans metropolitan area. We are doing so by (1) organizing and coordinating a network of scholars and practitioners to exchange experience and knowledge and thereby advance understanding of connections between diversity and recovery in post-trauma...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/6246/version/1

The true story behind the annotation of a pathway
Provedor de dados: 17
Autores: Giovanni Marco G. M. Dall&amp;#x27;Olio; Hafid H. Laayouni.
On 2010 we worked on the annotation of the N-Glycosylation pathway in the Reactome database. During this process, we found some unclear points and errors in other databases, and we reported and helped fix them. After we finished, we realized that the work of reporting errors to a database is basically not acknowledged by the scientific community: this is unfortunate because if only this process would be a bit more recognized and transparent, we could have better data in the databases and a more active community. Moreover, the fact that many databases tend to keep error reporting private creates great issues to the reproducibility of a work.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Another way to look at this talk is: if you dedicate 6 months of your PhD thesis...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5561/version/1

Plant species diversity and genetic diversity interactively influence community properties and ecosystem processes
Provedor de dados: 17
Autores: Kerri M. Crawford; Jennifer  A. Rudgers.
Background/Questions/Methods:  Biodiversity is a critical element of community properties and ecosystem processes.  Both plant species richness and genetic diversity positively affect processes ranging from primary production, ecosystem stability, and the maintenance of diversity.  In nature, it is likely that species diversity and genetic diversity interactively affect how communities are structured and ecosystems function.  However, the relative contribution of species diversity and genetic diversity to ecological processes has been rarely documented, and potential interactions between the two levels of diversity have not been investigated.  Here, I report results from a common garden experiment conducted in a coastal freshwater dune habitat at Sleeping...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment; Plant Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/5242/version/1

Spatial correlation as an early warning signal for transitions in ecosystems
Provedor de dados: 17
Autores: Vasilis Dakos; Egbert van Nes; Marten Scheffer.
An increasing number of sudden transformations triggered by small forces has been identified in a variety of ecological systems. Such changes are usually termed regime shifts between alternative states and their unexpected nature makes them challenging to handle from a management perspective. In the face of our limited mechanistic insight on the dynamics of such transitions, developing generic early warning signals for ecosystem regime shifts becomes a formidable task. So far, most of the research has focused on developing potential early warnings in simple models which ignore spatial interactions. In this work we spatially extended three well studied models that belong to the class of systems which undergo regime shifts through a fold bifurcation. All...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3858/version/1

Resilience in urban socioecological systems: residential water management as a driver of biodiversity
Provedor de dados: 17
Autores: Madhusudan Katti; Bradley Schleder.
Cities are unique ecosystems where human social-economic-cultural activities prominently shape the landscape, influencing the distribution and abundance of other species, and consequent patterns of biodiversity. The long-term sustainability of cities is of increasing concern as they continue to grow, straining infrastructure and pushing against natural resources constraints. A key resource is water, esp. in the more rapidly urbanizing arid regions. Understanding water management is thus critical for a deeper theoretical understanding of urban ecosystems and for effective urban policy. Landscaping and irrigation at any urban residence is a product of local geophysical/ecological conditions, homeowners&amp;#x2019; cultural preferences, socioeconomic status,...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/4138/version/1

Publishing re-usable phylogenetic trees, in theory and practice
Provedor de dados: 17
Autores: Brian O&amp;#x27;Meara; Jamie Whitacre; Ross Mounce; Dan F. Rosauer; Rutger A. Vos; Arlin Stoltzfus.
Sharing and re-use of data are essential to the progressive and self-correcting nature of science. In recognition of this principle, journals and funding agencies have adopted policies to encourage sharing of information (&amp;#x27;data&amp;#x27;), including empirical data as well as computed inferences such as phylogenetic trees. &amp;#xd;&amp;#xa;Here we summarize an ongoing analysis of 1) current practices for sharing phylogenetic trees and associated data; 2) current barriers to effective sharing and reuse of such data; and 3) prospects for reducing these barriers to promote more widespread sharing and re-use. Currently, the technical infrastructure is available to support (with some limitations) rudimentary archiving in conjunction with manuscript...
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6048/version/1

BioPAX Support in CellDesigner
Provedor de dados: 17
Autores: Anushya Muruganujan; Huaiyu Mi.
BioPAX is a pathway data exchange language that is widely used by pathway database resources.  Here we describe a mechanism that allows users to curate pathway data in diagrams using CellDesigner, a pathway graphical editing tool, and save the pathway data in BioPAX format.  We used this mechanism to create BioPAX files for all 165 pathways from the PANTHER database.  In addition, we are also working on graphically visualizing BioPAX data by importing them into CellDesigner.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5679/version/1

The nutritional phenotype database&amp;#xb;. A real data structure for systems biology
Provedor de dados: 17
Autores: Chris T. Evelo.
Biology is rapidly developing into a data-driven science and faces not only the challenge of coping with an ever growing amount of data but also that of interpreting its complex diversity. The requirement of systems biology to connect different levels of biological research leads directly to a need for large scale data integration. The nutritional phenotype database (dbNP) addresses this challenge for nutrigenomics. A particularly urgent objective in coping with the data avalanche is making biologically meaningful information accessible to the researcher. In this presentation we will describe how we intend to meet this objective with the nutritional phenotype database. We will outline relevant parts of the system architecture, describe the kinds of data to...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5141/version/1

Eco-evolutionary consequences of road adjacency and road salt on the wood frog, Rana sylvatica
Provedor de dados: 17
Autores: Steven P. Brady.
The network of roads on the landscape is vast, and has wide-reaching ecological influence. Recent investigations have focused on understanding impacts of contaminants from road runoff, especially deicing agents such as road salt. Despite growing research concerning ecological impacts of roads, our understanding of long-term consequences remains nascent. This stems in part from a dearth of investigations, and in part because ecological research typically ignores evolution on contemporary timescales. Yet reports of evolution influencing ecological outcomes are growing, suggesting this influence may be the rule rather than the exception. This may be especially true for species with spatially structured populations. For amphibians, such structuring coupled...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment; Evolutionary Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/3674/version/1

ABC SMC for parameter estimation and model selection with applications in systems biology
Provedor de dados: 17
Autores: Tina Toni.
Approximate Bayesian Computation (ABC) methods can be used in situations where the evaluation of the likelihood is computationally prohibitive. They are thus ideally suited for analyzing the complex dynamical models encountered in systems biology, where knowledge of the full (approximate) posterior is often essential.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;This talk gives an overview of an ABC algorithm based on Sequential Monte Carlo (ABC SMC). Different uses of the algorithm will be presented, depending on the application question of interest. The first is the general parameter estimation framework, where the interest lies in estimating the posterior parameter distribution from available experimental data. In the second context we ask whether the model can...
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5964/version/1

Toward a Complete Phyloreferencing Language
Provedor de dados: 17
Autores: T. Michael Keesey.
A phyloreference is a statement indicating a taxon within a phylogenetic context. A common use for phyloreferences is in phylogenetic definitions, which tie taxonomic names to taxa via such statements. Several conventions for writing phyloreferences have been proposed, but most only cover a few &amp;#x201c;standard&amp;#x201d; forms (node&amp;#x2011;, branch&amp;#x2011;, and perhaps apomorphy&amp;#x2011;based clades) without the capacity to represent more &amp;#x201c;exotic&amp;#x201d; forms (e.g., ancestor&amp;#x2011;based clades and qualified/modified references). In order to build a complete phyloreferencing language, the mathematical underpinnings of phylogenetic contexts must be clarified. A phylogenetic context may be modeled as a directed, acyclic...
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/4652/version/2

_Streptomyces_ sp. as predators of bacteria
Provedor de dados: 17
Autores: Charushila A. Kumbhar; Milind G. Watve.
Background: The ecological role of actinomycetes and their secondary metabolites is not yet completely understood. &amp;#xd;&amp;#xa;Hypothesis: Actinomycetes and Streptomyces sp. in particular, are non-obligate predators of bacteria in soil. &amp;#xd;&amp;#xa;Evidence: Ability to grow on live bacterial cells as a sole source of nutrients. Prey cell lysis accompanying growth. Circumstantial evidence for the involvement of antimicrobials along with enzymes.&amp;#xd;&amp;#xa;Implications: This finding may open up a new source of novel secondary metabolites from the genus.
Tipo: Presentation
Palavras-chave: Biotechnology; Ecology; Microbiology.
Ano: 2007
URL: http://precedings.nature.com/documents/1263/version/1

The Functional Autism Connectome
Provedor de dados: 17
Autores: Daniel Kelley.
This presentation provides an overview of a dissertation regarding functional brain networks in autism based on signal transduction and functional magnetic resonance imaging (fMRI) research.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Kelley, D.J. (2008). Functional connectivity of affective face processing networks in autism. Dissertation Abstract International, 69(5), 2816B, 458 pages. (UMI No. AAT 3314120; ISBN: 9780549628781). Retrieved December 22, 2008, from Dissertations and Theses database.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;[http://proquest.umi.com/pqdlink?did=1606794441&amp;#x26;Fmt=7&amp;#x26;clientId=79356&amp;#x26;RQT=309&amp;#x26;VName=PQD]&amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Neuroscience.
Ano: 2008
URL: http://precedings.nature.com/documents/2724/version/1

Assessing the conservation value of farmland ponds: Use of predictive techniques to identify surrogare groups
Provedor de dados: 17
Autores: Margherita Gioria.
Background/Question/Methods. Ponds are among the most diverse and yet threatened components of freshwater biodiversity. The conservation of ponds would greatly benefit from the identification of surrogate taxa in preliminary assessments aimed at detecting ponds of potentially high biodiversity value. Vascular plants and water beetles have often been used in pond conservation assessments. To evaluate whether wetland plants are a suitable surrogate group to evaluate pond biodiversity, we used plant, beetle, and environmental data collected from 54 ponds located in two farmed regions in Ireland. Specifically, we aimed at assessing cross-taxon congruence between water beetles and plants; quantifying and comparing the capacity of vegetation data and...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5214/version/1

Absolute Potentials of Standard Reference Electrodes at 25 C
Provedor de dados: 17
Autores: Raji Heyrovska.
Aqueous standard redox potentials are conventionally referred to that of the standard hydrogen electrode (SHE) as zero (IUPAC definition), in the absence of the knowledge of its absolute value. Recently, the author obtained its value (4.20 V) from a newly found linear dependence of redox potentials on ionization potentials. This has enabled now to express the potentials of standard reference electrodes in terms of the absolute values.
Tipo: Presentation
Palavras-chave: Chemistry.
Ano: 2010
URL: http://precedings.nature.com/documents/4354/version/1

Types, models and instances: a perspective from neuroscience
Provedor de dados: 17
Autores: Robert C. Cannon.
In order to share neuroscience models effectively, there is a need to clearly separate out the structure, equations and parameters so that each model only specifies those bits that are unique to itself. This will enable specialized simulation tools to recognize structures they can handle without having to process the equations directly. Two projects, NeuroML2 and NineML are working in this direction. As an example, we show how the Hodgkin Huxley equations can be decomposed into separate component type definitions and parameter sets in such as way that the majority of Hodgkin-Huxley style ion channel models can be expressed in only a few lines.
Tipo: Presentation
Palavras-chave: Neuroscience; Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5119/version/1

Studies on riverine flora of Pamba river basin, Kerala
Provedor de dados: 17
Autores: Joby Paul; George K. V.
Riparian forests are ecotonal assemblage of aquatic and terrestrial habitats. The composition of riparian forests of Pamba River is an amalgamation of riverine, evergreen, deciduous and wetland flora. The floristic investigation of the riparian forests of Pamba river basin revealed taxonomically 433 species which include 410 angiosperms, 3 gymnosperms and 20 pteridophytes. The dominant families based on the number of species are Poaceae, Euphorbiaceae, Rubiaceae, Cyperaceae and Fabaceae.  The flora consists of a diverse blend of 99 evergreen, 36 deciduous, 50 wetland, 15 shola-grassland, 46 cultivated and 44 riverine components. The river basin holds 17.5 % endemism and 17 RET species. The riparian tree species identified in the present investigation are...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/5135/version/1

NMR and Electron Microscopy Studies of Soybean Seeds, Soybean Proteins, and Oil for Improved Utilization in Foods and Feeds
Provedor de dados: 17
Autores: Doina M. Costescu; I. C. Baianu.
NMR, NIR and EM techniques are suitable methods of measuring protein and oil content in soybeans. After completion of a measurement with NMR or NIR, a soybean sample could be either replanted or consummated. NMR techniques involved in the present work are based on the response of nuclei, as nuclear spin flips, when set in a 7.05T magnetic field and excited with rf pulses of 300 MHz. NIR spectroscopy is based on outer electron molecular vibrations, when excited with radiation of frequency 1012 -4&amp;#xd7;1014Hz, and &amp;#xf06c;=2.5Om-750 nm. &amp;#xd;&amp;#xa;TEM and ESEM techniques are bulk and surface analysis techniques, respectively, working with electron beams of 15KV, and image resolution in the range of nm&amp;#x2019;s. ESEM is based on the...
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Developmental Biology; Genetics &amp; Genomics; Molecular Cell Biology; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6192/version/1

Mechanisms Of Inhibition Of Cigarette Smoke Genotoxicity And Carcinogenicity
Provedor de dados: 17
Autores: Roumen Balansky; Francesco D&amp;#x27;Agostini; Alberto  Izzotti; P Kalpakam; Vernon E. Steele; Silvio De Flora.
Epidemiological studies have demonstrated that it is possible to prevent lung cancer and other smoke-related diseases by avoiding exposures to tobacco smoke. A complementary strategy is chemoprevention, which is based on the administration of dietary and pharmacological agents, which is addressed to (a) addicted active smokers, who are unable to quit smoking, (b) ex-smokers, who are still at risk for several years, and (c) involuntary smokers, including passively exposed individuals as well as transplacentally exposed individuals. The biological effects of cigarette smoke (CS) as a complex mixture, either mainstream (MCS) or sidestream (SCS) or environmental (ECS), have been poorly explored. We showed that MCS and ECS induce a broad variety of alterations...
Tipo: Presentation
Palavras-chave: Cancer.
Ano: 2010
URL: http://precedings.nature.com/documents/5328/version/1

The SBML Level 3 Annotation package: an initial proposal
Provedor de dados: 17
Autores: Neil Swainston.
The SBML Level 3 Annotation package proposal intends to extend the current Level 3 Core annotations by increasing the range of RDF features supported.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Such an extension will support RDF Reification, annotation of SBML attributes, specification of relationships between annotations, negation of annotations and cross-references and cross-element annotations.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5001/version/1

Characterizing genetic diversity and creating novel gene pools in rice for trait dissection and gene function discovery
Provedor de dados: 17
Autores: Ramil Mauleon; Kenneth McNally; Hei Leung; Richard Bruskiewich; Ruaraidh Sackville-Hamilton.
Rice diversity is the foundation for rice improvement programs. At IRRI, over 100,000 rice accessions are deposited, and intelligent use of this diversity can not only help solve current production problems but also create future production opportunities and tackle climate change challenges. To fully explore and utilize rice diversity, two ingredients are needed: 1 - the genetic blueprints of diverse rice accessions in use, 2 - plant populations with recombined genotypes allowing expression of phenotypic variation and discovery of new genes/QTLs  for use in breeding programs. Sequencing of the genomes &amp;#x26; obtaining SNP genotypes of many rice accessions is feasible due to decreasing cost of advanced DNA sequencing technologies. Coupled with the...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5114/version/1

Formal Systems Architectures for Biology
Provedor de dados: 17
Autores: Bradly Alicea.
When the word &amp;#x22;systems&amp;#x22; is used in systems biology, it invokes a variety of assumptions about what defines the subject under investigation, which in turn can lead to divergent research outcomes. We will take the position that systems are defined by their potential organizing and &amp;#x22;control&amp;#x22; mechanisms, &amp;#xd;&amp;#xa;which distinguishes complex, living systems from a primordial soup. This will be accomplished by defining and investigating three interesting control motifs in biological systems: dominoes and clocks, futile cycles, and complex feedforward regulation. Additional mechanisms that combine feedback and feedforward mechanisms will also be briefly elaborated upon. Throughout these examples, our focus will be on...
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6369/version/1

Variable consumer responses to invasion by Microstegium vimineum: The role of indirect effects
Provedor de dados: 17
Autores: Jayna L. DeVore; John C. Maerz.
*Background/Question/Methods*&amp;#xd;&amp;#xa;As both basal resources and autogenic ecosystem engineers, plants play an important role in structuring consumer communities.  Plant invasion can alter important ecosystem properties such as habitat complexity, nutrient availability, and abiotic properties, and the hyper-productive, high-nutrient nature of many invaders may make the influence of these plants especially pronounced.  While direct influences of these processes on competitors and predators may be relatively foreseeable, the consequences of indirect effects on consumers living within these invaded habitats are more difficult to predict.  In order to determine the response of various forest floor consumers to invasion by the exotic grass...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5240/version/1

PECAn: workflow management for data assimilation and forecasting
Provedor de dados: 17
Autores: David LeBauer; Dan Wang; Xiaohui Feng; Michael Dietze.
*Background/Question/Methods*  Ecosystem models use physiological traits and environmental data to model land-air carbon exchange. Such models can integrate heterogeneous ecological and environmental data, but rarely account for the contribution of each input to the overall uncertainty in model output. Quantifying uncertainty in each model input and propagating uncertainty through model ensembles directly estimates overall uncertainty in model output. Identification of data that would most effectively constrain uncertainty can also be directly inferred by processing output. Real-time data assimilation and forecasting benefits from a method that is transparent, scalable, and adaptable. A tool that manages these steps while tracking the provenance of data...
Tipo: Presentation
Palavras-chave: Ecology; Bioinformatics; Earth &amp; Environment; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5533/version/1

Ecologists and the development of sustainability curricula for majors vs. non-majors
Provedor de dados: 17
Autores: Carmen R. Cid.
*Background/Question/Methods*&amp;#xd;&amp;#xa;Ecologists usually study interactions among living and non-living things at a particular spatial scale. Ecological curricula often have a biological focus except in ecosystem or applied ecology courses. At the undergraduate level, the impact of human activity on ecology class discussions is often relegated to urban ecology classes. The discussion of sustainability is a side line in introductory or upper level ecology courses, except in applied research courses, and more intensely addressed in non-science general education courses. To develop a global sustainable society will require that different disciplines understand the many factors that affect &amp;#x22;sustainability&amp;#x22; and work with a common...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3611/version/1

Integrating microbial community data with ecological theory
Provedor de dados: 17
Autores: Steven D. Allison.
Background/Question/Methods&amp;#xd;&amp;#xa;Molecular and bioinformatics techniques are revealing the rich diversity of microbial communities. These approaches generate valuable data that ecologists could use to develop and test theories that apply to a large fraction of living organisms. However, the complexity of microbial community data is a challenge to achieving this integration. A fundamental question in microbial ecology is how to aggregate microbial communities so that their taxa may be represented in theoretical models. Recently, models based on microbial traits have been developed to tackle this question. Such models may represent microbial taxa as functional groups or stochastic assemblages with a distribution of trait values. Here, I define...
Tipo: Presentation
Palavras-chave: Ecology; Microbiology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/5511/version/1

Data Curation in Biology - Past, Present and Future
Provedor de dados: 17
Autores: Janet Thornton.
Data curation has been critical in the development of biology from Darwin and Linnaeus to UniProt, the careful collection and organisation of data has been the spring from which new hypotheses and understanding have emerged. In this presentation, I will describe how we have used data curation in my own research group - and also present an overview of curation at the EBI. With new technical developments and the move towards the semantic web, the role of curation in the future needs to develop to take advantage of these new opportunities. This will be discussed.
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Molecular Cell Biology; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3225/version/1

The Mass-Action-Law Based GPS Concept for Bio-Informatics
Provedor de dados: 17
Autores: Ting-Chao Chou.
The unified theory of dose and effect, as indicated by the median-effect equation for single and multiple entities and for the first and higher order kinetic/dynamic, has been established by T.C. Chou and it is based on the physical/chemical principle of the mass-action law (_J. Theor. Biol._ 59: 253-276, 1976; _Pharmacological Rev._ 58: 621-681, 2006). Rearrangements of the median-effect equation lead to Michaelis-Menten, Hill, Scatchard, and Henderson-Hasselbalch equations. The &amp;#x201c;median&amp;#x201d; serves as the &amp;#x201c;universal reference point&amp;#x201d; and the &amp;#x201c;common link&amp;#x201d; for the relationship of all entities at all dynamic orders, and is also the &amp;#x201c;harmonic mean&amp;#x201d; of kinetic dissociation...
Tipo: Presentation
Palavras-chave: Biotechnology; Pharmacology; Bioinformatics.
Ano: 2008
URL: http://precedings.nature.com/documents/2064/version/1

Increasing Access To Bioinformatics Resources: Increase Community Curation by Increasing Your Community
Provedor de dados: 17
Autores: Jennifer M. Williams.
The amount of biological data has risen exponentially over the last decade. Along with this rise, the number and types of bioinformatics resources has risen such that the sheer number of bioinformatics resources is overwhelming. For these resources to attain their full potential, they must be efficiently and extensively utilized. But in such a plethora of resources, how does a researcher new to a field find the resources that will meet their needs. Once a resource is found, how does the researcher quickly learn to utilize that resource fully? There are resource lists such as those provided by the journal Nucleic Acid Research (NAR), BioMed Central and the Univ. of Pittsburgh Health Sciences Library, and most resources include their own documentation. But...
Tipo: Presentation
Palavras-chave: Biotechnology; Cancer; Genetics &amp; Genomics; Molecular Cell Biology; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3163/version/1

My experiment with open science: Why the benefits of sharing go beyond source code
Provedor de dados: 17
Autores: Carl Boettiger.
I briefly describe three themes that help maximize the benefits of an open science approach towards code, literature, discussions, and lab notebooks.
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4602/version/1

KaPPA-View4: A Pathway Database for Gene Co-expression and Metabolite Co-accumulation Analysis
Provedor de dados: 17
Autores: Nozomu Sakurai.
Correlations of gene-to-gene co-expression and metabolite-to-metabolite co-accumulation are considered to be useful for uncovering unknown functions of genes and regulatory systems of the metabolic pathways. Although many databases and tools are available to interpret quantitative data of transcriptome and metabolome, there are only limited ones that connect correlation data to biological knowledge and can be utilized to find biological significance of it. We developed a new metabolic pathway database, KaPPA-View4 (&amp;#x22;http://kpv.kazusa.or.jp/kpv4/&amp;#x22;:http://kpv.kazusa.or.jp/kpv4/), that enables to overlay gene-to-gene and/or metabolite-to-metabolite relationships as quadratic Bez&amp;#xed;er curves on metabolic pathway maps. For up to 4 maps...
Tipo: Presentation
Palavras-chave: Microbiology; Molecular Cell Biology; Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5065/version/1

In-silico analysis and identification of novel lead molecule for human IGFBP-4 involved in cardiovascular diseases
Provedor de dados: 17
Autores: Kavali  Roopesh; Manne Munikumar; Amineni Umamaheswari.
Cardiovascular disease is the major cause of disability and premature death throughout the world and contributes substantially to the escalating costs of health care. Insulin like growth factor binding protein 4 (IGFBP-4) mainly belongs to the family of IGFB protein. Over expression of IGFBP-4 leads to cardiovascular diseases namely stroke, acute myocardial infarction and heart failure. IGFBP-4 serves as an effective drug target against cardiovascular disease. Hence, ligand based virtual screening was persuaded in the present study to propose potential inhibitors of IGFBP-4. Two inhibitors (mainly from literature search) were selected to initiate high throughput virtual screening from small molecule databases namely, NCI, ChemBank, ChemPDB, AKos GmbH,...
Tipo: Presentation
Palavras-chave: Cancer; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6530/version/1

Chlorinated Diphenyl Ethers in Sediments, Biota, and the Water Column from Coastal British Columbia, Canada
Provedor de dados: 17
Autores: Sierra Rayne; Ikonomou G. Michael; Chris Garrett.
Polychlorinated diphenyl ethers (PCDEs) are impurities in technical chlorophenol mixtures, are used as dielectric fluids in capacitors and as herbicides, antiseptics, food preservatives, and papers and textiles, and can be formed through the chlorination of organics in water and wastewater streams. Samples from semipermeable membrane devices (SPMDs), sediments, English sole, mussels, and Dungeness crab were collected from urban/industrial and remote sites along the marine coast of British Columbia and analyzed by congener-specific GC-MS analysis for mono- through deca-substituted PCDEs. Higher concentrations in biota and sediments were observed near urban/industrial areas, with evidence for food-chain biomagnification within major harbours. Correlations...
Tipo: Presentation
Palavras-chave: Chemistry; Earth &amp; Environment.
Ano: 2007
URL: http://precedings.nature.com/documents/690/version/1

Acknowledging contributions to online expert assistance
Provedor de dados: 17
Autores: Andra Waagmeester; Gareth  Palidwor; Pawel Szczesny; Istvan Albert; Mary Mangan; Chris Miller; Simon Cockell; Pierre Lindenbaum; Daniel A. M. M. Silvestre; Giovanni Marco Dall&amp;#x2019;Olio; Chris Miller.
We present a poster which contains a sequence of a question, answers to this question and comments regarding acknowledging content on BioStar. Biostar.stackexchange.com is a website where questions about Bioinformatics can be asked and answered. Users can also comment on both the questions and the answers. The site is modelled after www.stackoverflow.com (see description from Joel Spolsky), a comparable site for programmers.&amp;#xd;&amp;#xa; &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Users find the site valuable both for answers to questions they have and as a reference. Since the content can also be viewed without registration the site likely reaches a larger audience. For instance, BioStar questions are often referenced on Twitter and FriendFeed. This leads to...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6043/version/1

Multi-scale network biology model &amp;#x26; the model library
Provedor de dados: 17
Autores: Jianghui Xiong.
Multi-scale network biology model &amp;#x26; the model library
Tipo: Presentation
Palavras-chave: Biotechnology; Cancer; Developmental Biology; Genetics &amp; Genomics; Immunology; Molecular Cell Biology; Pharmacology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5778/version/1

Seasonal reproduction in a fluctuating energy environment: Insolation-driven synchronized broadcast spawning in corals
Provedor de dados: 17
Autores: Bharath Ananthasubramaniam; Roger M. Nisbet; Daniel E. Morse; Francis J. Doyle.
*Background/Question/Methods:* Colonies of spawning corals reproduce in mass-spawning events, in which polyps within each colony release sperm and eggs for fertilization in the water column, with fertilization occurring only between gametes from different colonies.  Participating colonies synchronize their gamete release to a window of a few hours once a year (for the species Acropora digitifera we study experimentally). This remarkable synchrony is essential for successful coral reproduction and thus, maintenance of the coral reef ecosystem that is currently under threat from local and global environmental effects such as pollution, global warming and ocean acidification.  The mechanisms determining this tight synchrony in reproduction are not well...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5344/version/1

Atlases of Minnesota Water Sustainability: Creation from Models, Analytical Methods, and Database of Watershed Characteristics
Provedor de dados: 17
Autores: John Nieber; Roman Kanivetsky; Heidi Peterson; Francisco Lahoud; David Mulla; Boris Shmagin.
Confident assessment of the numbers of regional water balance and water resources for Atlases of MN Water Sustainability (AMNWS) has to be based on the best science, advanced knowledge and modern technology. Creating a watershed characteristic database is the first and most significant step in the analysis of time spatial distributions of Minnesota&amp;#x2019;s water balance components. The database spatially associates hydrologic data (annual discharge, monthly proportion, and yield) with topographical, soil and vadoze zone, ecological and hydrogeological conditions and properties. USGS stream flow data for 129 gauging stations surrounding MN was manipulated within ArcGIS. Characteristics of the 129 watersheds (drainage areas 100-10000 square miles) were...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2378/version/1

Efficient learning in Approximate Bayesian Computation
Provedor de dados: 17
Autores: Mohammed  Sedki; Pierre  Pudlo.
Efficient learning in Approximate Bayesian Computation
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5962/version/1

Allergies, Asthma, and Eczema: Response to Disturbance of the Microbiota of the Newborn Gut
Provedor de dados: 17
Autores: Debra L. Wohl; William J. Curry.
*Background/Question/Methods*&amp;#xd;&amp;#xa;The birth of a child may include routine use of antibiotics or a delivery by cesarean section.  We applaud these medical advances for their direct benefits.  However, birthing practices have been shown to disrupt the colonization of the microbial gut in newborns, which may have long term consequences on the development of a child&amp;#x2019;s immune system resulting in atopies (i.e., asthma, allergies, and eczema).  Animal models and other research have been used to demonstrate that not only the presence, but also the community composition of the gut microbiota, is essential for normal immune development.  Furthermore, it has been established that there are differences in the intestinal microbiota of children...
Tipo: Presentation
Palavras-chave: Ecology; Microbiology.
Ano: 2009
URL: http://precedings.nature.com/documents/3685/version/1

The LAILAPS Search Engine: A Feature Model for Relevance Ranking in Life Science Databases
Provedor de dados: 17
Autores: Matthias Lange; Karl Spies; Christian Colmsee; Steffen Flemming; Matthias Klapperst&amp;#xfc;ck; Uwe Scholz.
Efficient and effective information retrieval in life sciences is one of the most pressing challenge in bioinformatics. The incredible growth of life science databases to a vast network of interconnected information systems is to the same extent a big challenge and a great chance for life science research. The knowledge found in the Web, in particular in life-science databases, are a valuable major resource. In order to bring it to the scientist desktop, it is essential to have well performing search engines. Thereby, not the response time nor the number of results is important. The most crucial factor for millions of query results is the relevance ranking. In this paper, we present a feature model for relevance ranking in life science databases and its...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4337/version/1

Mechanistic Approaches To The Prevention Of Mutation And Cancer
Provedor de dados: 17
Autores: Silvio S. De Flora.
Cancer and other mutation-related diseases can be prevented at three levels: primary prevention, which is addressed to healthy individuals in order to prevent occurrence of the disease; secondary prevention, which is addressed to early stage patients in order to prevent progression of the disease; and tertiary prevention, which is addressed to patients after therapy in order to prevent relapses of the disease. Although the most obvious approach to prevention is to minimize exposures to recognized risk factors, a complementary strategy is represented by chemoprevention, using dietary and pharmacological agents that reinforce the host defence machinery. Since 1988, I proposed detailed classifications of mechanisms of inhibitors of mutagenesis and...
Tipo: Presentation
Palavras-chave: Cancer; Genetics &amp; Genomics.
Ano: 2010
URL: http://precedings.nature.com/documents/5317/version/1

The power of &amp;#x201c;Green&amp;#x201d; Energy: plant trait influences on microbial competition and greenhouse gas production
Provedor de dados: 17
Autores: Ariana Sutton-Grier; J. Patrick Megonigal.
Background/Questions/Methods&amp;#xd;&amp;#xa;Species vary in the eco-physiological traits they possess which means species may differentially influence ecosystem functions such as microbial activity.  In wetland ecosystems it is important to understand how different plant species influence microbial competition for resources because competition affects microbial respiration and one of the products of anaerobic microbial respiration is methane, a potent greenhouse gas.  Plants influence the availability of substrates for microbial respiration, both available carbon and terminal electron acceptors (such as Fe(III)).  Because methanogenic microbes must compete with other microbes for respiration substrates and can be out-competed if conditions are more...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5492/version/1

Evolving standards and infrastructure for systems biology: SBML, SBGN, and BioModels.net
Provedor de dados: 17
Autores: Michael Hucka.
Systems biology has arisen through the convergence of theoretical, computational, and mathematical modeling of systems and the need to understand the wealth of information being rapidly generated in biology.  Systems biology by its nature requires collaborations between scientists with expertise in biology, chemistry, computer sciences, engineering, mathematics, and physics.  Successful integration of these disciplines depends on bringing to bear both social and technological tools: namely, consortia that help forge collaborations and common understanding, software tools that permit analysis of vast and complex data, and agreed-upon standards that enable researchers to communicate and reuse each other&amp;#x27;s results in practical and unambiguous ways....
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics; Data Standards.
Ano: 2007
URL: http://precedings.nature.com/documents/20/version/1

SABIO-RK: Curated Kinetic Data of Biochemical Reactions
Provedor de dados: 17
Autores: Ulrike Wittig.
SABIO-RK (&amp;#x22;http://sabio.villa-bosch.de/SABIORK/&amp;#x22;:http://sabio.villa-bosch.de/SABIORK/) is a curated, web-accessible database for modellers and wet-lab scientists to get comprehensive information about biochemical reactions and their kinetic properties. It integrates data from different origin in order to facilitate the access to reaction kinetics data and corresponding information. Since most of the kinetic data is exclusively found in the literature SABIO-RK offers data manually extracted from the literature and related information obtained from other publicly available biological databases. For instance, the kinetic data are related to reactions, organisms, tissues and cellular locations. The type of the kinetic mechanism and...
Tipo: Presentation
Palavras-chave: Chemistry; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3085/version/1

BRIF Workshop Introduction
Provedor de dados: 17
Autores: Anne Cambon-Thomsen.
This presentation aims at introducing the place of BRIF in the landscape of data sharing, the BRIF concept, a presentation of the working group, the ongoing debates and the workshop objectives.
Tipo: Presentation
Palavras-chave: Biotechnology; Genetics &amp; Genomics; Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/5658/version/1

Manual Curation of Vertebrate Proteins  in the UniProt Knowledgebase.
Provedor de dados: 17
Autores: Michael  J. Gardner; Lionel  Breuza; The UniProt  Consortium.
The UniProt Knowledgebase (UniProtKB) aims to provide the scientific community with a comprehensive, consistent and authoritative resource for protein sequence and functional information. Given the importance of human and vertebrate model data in biomedical research, a major focus is the high-quality manual curation of human proteins and their vertebrate orthologues. Manual curation involves (1) the extraction of experimental results from scientific literature to enrich protein records with a wide range of information including function, structure, interactions and subcellular location, (2) the manual verification of each sequence and clarification of discrepancies between sequence reports, and (3) the assessment of the output of a range of analysis...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Molecular Cell Biology; Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5165/version/1

Study Mechanism Of Action Of Krishnavajrabhraka Bhasma In Asthma
Provedor de dados: 17
Autores: Kushal Sarda; Vijaya  Pandit; Jayshree Dawane; Gourav Deshmane.
Objective: To evaluate the mechanism of action of Krishnavajrabhraka Bhasma(KVB) in chronic asthma.&amp;#xd;&amp;#xa;Methodology: 30 animals divided into 5 groups: 1)vehicle(water) 2)vehicle(honey) 3)Low dose KVB 4)High dose KVB 5)Standard drug.&amp;#xd;&amp;#xa;Expt I:- Mast cell stabilization-&amp;#xd;&amp;#xa;On day 1, animals were sensitized with egg albumin. Treatment started from day 22 in two ways: a)Single dose b)14days.  Egg albumin challenge was given at the end of the treatment. Rats were sacrificed, mesentery collected &amp;#x26; observed for mast cell degranulation.  &amp;#xd;&amp;#xa;Expt II:- Anti-inflammatory action-&amp;#xd;&amp;#xa;Croton oil was injected in the back in all rats to make a  pouch. After 7 days of drug treatment, animals...
Tipo: Presentation
Palavras-chave: Pharmacology.
Ano: 2010
URL: http://precedings.nature.com/documents/5422/version/1

Root production and methane dynamics: Impact of wetland functional group diversity and composition
Provedor de dados: 17
Autores: Rachel Schultz; Virginie Bouchard; Serita Frey.
*Background/Question/Methods*&amp;#xd;&amp;#xa;The loss of biodiversity worldwide has prompted a close investigation of the link between diversity and ecosystem functions. Most experimental studies have looked at the relationship between grassland plant diversity and aboveground productivity. Less is known about other ecosystems or how diversity affects belowground processes. Our objective was to investigate the link between plant community (diversity and composition) and key belowground processes such as root biomass production and CH4 dynamics in wetland ecosystems. We hypothesized that 1) root biomass would increase with functional group diversity due to complementarity and 2) the sediment pool of CH4 would decrease with diversity due to increased CH4...
Tipo: Presentation
Palavras-chave: Chemistry; Ecology; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3625/version/1

Exploring NAG active site of human CD59 towards discovery of novel activators for treatment of atherosclerosis
Provedor de dados: 17
Autores: Challa Lakshmi Narayana Rao; Dibyabhaba Pradhan; Amineni Umamaheswari.
CD59 is a potent inhibitor of the complement membrane attack complex (MAC) action that acts by binding to the C8 and C9 complements of the assembling MAC, thereby preventing incorporation of the multiple copies of C9 required for complete formation of the osmolytic pore. Human CD59 low expression leads to atherosclerosis. Therefore, computational approach methods were implemented herein to design novel activators for CD59. Crystal structure (PDB ID: 1CDR) of CD59 was investigated to locate N-acetyl glucosamine (NAG) active site residues (Leu1, Gln2, Val17, Asn18, Ser20, Ser21, Asp22 and Asp67). CD59 is known for its binding affinity towards NAG and Alpha-L-Fucose, hence, were explored against more than one million entries of Ligand.Info metadatabase to...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6531/version/1

Non-linear Regression Approaches in ABC
Provedor de dados: 17
Autores: Michael G. B. Blum.
In this talk, we consider different methods of parameter inference for ABC. Derivations of the asymptotic bias and variance of the standard ABC estimators indicates that ABC may achieve poor performance when the dimension of the summary statistics is large. The linear adjustment introduced by Beaumont et al. (2002) is found to achieve better performance when there is a nearly homoscedastic relationship between the summary statistics and the parameter of interest. To provide a more flexible adjustment method, we propose two innovations. The new method fits 1/a heteroscedatic rather than a homoscedastic regression model and consider 2/non linear instead of linear regression. The new algorithm is compared to the state-of-the-art approximate Bayesian methods...
Tipo: Presentation
Palavras-chave: Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5954/version/1

The compositional simulation and seismic monitoring of CO2 EOR and sequestration in new gas condensate reservoir
Provedor de dados: 17
Autores: Chengwu Yuan; Long Jin.
While mature oil reservoir and aquifers are good candidates for CO2 sequestration, we proposed and investigated the alternative approach which, at the very start of production, combines CO2 sequestration and CO2 EOR  in gas condensate reservoir. Firstly, we conducted compositional reservoir simulation and synthetic seismic simulation in a five-spot well pattern to investigate whether seismic data can monitor of CO2 front and gas condensate bank. The simulated results and the seismic simulation results are compared with each other. Although the density contrast among reservoir gas, injected CO2 and condensate is smaller than the density contrast in the case of CO2 sequestration in aquifer, the seismic signal can capture this smaller difference and monitor...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2661/version/1

Reputation, authority and incentives. Or: How to get rid of the Impact Factor
Provedor de dados: 17
Autores: Bj&amp;#xf6;rn Brembs; Peter Binfield.
A short intro into the impact factor and its limitations and potential successors.
Tipo: Presentation
Palavras-chave: Chemistry; Molecular Cell Biology; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/2801/version/1

COMBINE - a vision
Provedor de dados: 17
Autores: Nicolas Le Novere.
A decade ago, the creation of the Systems Biology Markup Language (SBML) changed the way people exchanged, verified and re-used models in systems biology. The robustness and versatility of this format, coupled to a wide software support, fostered the emergence of an entire area of research centered on model processing such as encoding, annotation, merging, comparison and integration with other datasets. Recently, new languages appeared that complement the model description, such as SED-ML to describe the simulation experiments or SBRML to encode the numerical results. In neuroscience, other fledgling efforts cover for instance multi-compartment neurons with NeuroML, and neuronal networks with NineML. More are needed to cover the wide spectrum of...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/5992/version/1

Debugging Mappings between Biomedical Ontologies: Preliminary Results from the NCBO BioPortal Mapping Repository
Provedor de dados: 17
Autores: Jyotishman Pathak; Christopher Chute.
The ability to provide semantic mappings between multiple large biomedical ontologies is considered as a very important, albeit labor-intensive and error-prone task. To facilitate such a process, several approaches for collaborative ontology mapping building and sharing have been proposed in the recent past. However, despite the improvements in community-wide mappings development, more often the mapping rules are redundant, incoherent, and at times, incorrect. In this paper, we present an approach for identifying such &amp;#x201c;erroneous mappings&amp;#x201d; using Distributed Description Logics. Specifically, we illustrate how logical reasoning can be used to discover semantic inconsistencies caused by erroneous mappings, and provide preliminary results...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3456/version/1

The CALBC RDF Triple store: retrieval over large literature content
Provedor de dados: 17
Autores: Samuel Croset; Christoph Grabm&amp;#xfc;ller; Chen Li; Silvestras Kavaliauskas; Dietrich Rebholz-Schuhmann.
Background&amp;#xd;&amp;#xa;Integration of the scientific literature into a biomedical research infrastructure requires the processing of the literature, identification of the contained named entities (NEs) and concepts, and to represent the content in a standardised way.  Little efforts have been spent on the integration of content from the literature text into RDF Triple Stores.&amp;#xd;&amp;#xa;The CALBC project partners (PPs) have produced a large-scale annotated biomedical corpus with four different semantic groups through the harmonisation of annotations from automatic text mining solutions, the first version of the Silver Standard Corpus I (SSC-I). The four semantic groups were chemical entities and drugs (CHED), genes and proteins (PRGE), diseases...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5383/version/2

The Mass-Action-Law Based GPS Concept for Bio-Informatics
Provedor de dados: 17
Autores: Ting-Chao Chou.
The unified theory of dose and effect, as indicated by the median-effect equation for single and multiple entities and for the first and higher order kinetic/dynamic, has been established by T.C. Chou and it is based on the physical/chemical principle of the mass-action law (_J. Theor. Biol._ 59: 253-276, 1976; _Pharmacological Rev._ 58: 621-681, 2006). Rearrangements of the median-effect equation lead to Michaelis-Menten, Hill, Scatchard, and Henderson-Hasselbalch equations. The &amp;#x201c;median&amp;#x201d; serves as the &amp;#x201c;universal reference point&amp;#x201d; and the &amp;#x201c;common link&amp;#x201d; for the relationship of all entities at all dynamic orders, and is also the &amp;#x201c;harmonic mean&amp;#x201d; of kinetic dissociation...
Tipo: Presentation
Palavras-chave: Biotechnology; Pharmacology; Bioinformatics.
Ano: 2008
URL: http://precedings.nature.com/documents/2064/version/2

UniRule - Automatic Annotation In UniProtKB
Provedor de dados: 17
Autores: Alan J. Bridge; Diego Poggioli; Claire O&amp;#x27;Donovan.
The UniProt KnowledgeBase (UniProtKB) provides a stable, comprehensive, freely accessible, centralized resource on protein sequences and functional annotation. UniProtKB consists of two sections: UniProtKB/SwissProt, a section containing records that are manually annotated with information extracted from the literature and curator-evaluated computational analysis, and UniProtKB/TrEMBL, a section containing computationally analysed records enriched with automatic annotation and classification. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Automatic annotation is an essential complement to manual annotation, which cannot keep pace with either current or projected rates of growth of UniProtKB. To this end UniProt is developing an integrated annotation system termed...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5247/version/1

Can global models reproduce the current increase in Western United States Wildfires and project a reliable future trend?
Provedor de dados: 17
Autores: Dominique  Bachelet; Dave Conklin; Brendan Rogers; Maureen McGlinchy; Jim Lenihan; Ron Neilson; Ray Drapek.
Background/Question/Methods:&amp;#xd;&amp;#xa;Wildfires in the western U.S. are generally thought to have increased since the 1980s. Many factors have contributed to this increase such as fire suppression, livestock grazing, and urban sprawl. Fires have also been associated with variations in sea surface temperatures and described by indices such as El Ni&amp;#xf1;o Southern Oscillation (ENSO), the Pacific Decadal Oscillation (PDO), and the Atlantic Multidecadal Oscillation (AMO). Recent analyses have also shown that we may have entered a new fire regime starting with a climate shift in 1998 and are currently entering years of combined long-term warm AMO phase with cool ENSO and PDO phases usually associated with increased drought-induced fires in the...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3618/version/1

BioPAX: next steps for Semantic Web / CV workgroup
Provedor de dados: 17
Autores: Andrea Splendiani.
Outline of the next steps which will be proposed as actions in the Semantic Web/ Linking/ CV workgroup of BioPAX.&amp;#xd;&amp;#xa;One main focus will be to clean the RDF representation and adopt some basic relations, in order to address use cases in data-integration, pathway analysis and simple ontology/pathway integration.&amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4968/version/1

Polycentric networks and resilience in urban systems: A comparison of Baltimore and Seattle
Provedor de dados: 17
Autores: Michele Romolini; Morgan Grove.
Numerous studies have demonstrated that successful resource management requires collaboration among many groups. While most research has been conducted on rural resource management, collaborative management is now recognized as an important strategy in densely settled urban areas. Cities generally consist of many fragmented land parcels under different types of use and ownership, which produces a large and diverse group of stakeholders with an interest in resource management decisions. Past research has shown that 1) natural resource stewardship organizations play an important role in both managing natural resources and building social capital; 2) successful outcomes often rely on effective collaborations through organizational networks; 3) there are...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/5222/version/1

Open Notebook Science Using Blogs and Wikis
Provedor de dados: 17
Autores: Jean-Claude Bradley.
The first half is a summary of how the Bradley group at Drexel University is doing Open Notebook Science with the UsefulChem project to synthesize and test novel anti-malarial compounds.  Graduate student Dave Strumfels&amp;#x27; code to compute kinetics from JCAMP NMR reaction profiles is then highlighted.  Finally screenshots are shown of a building on Nature Island in Second Life where Beth Ritter-Guth and Eloise Pasteur have helped to set up a poster room with NMR spectra, molecules and an organic chemistry quiz that can be activated by clicking on an obelisk. &amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Chemistry.
Ano: 2007
URL: http://precedings.nature.com/documents/39/version/1

A bestiary of non-linear functions for growth analysis
Provedor de dados: 17
Autores: C. E. Timothy Paine; Toby Marthews; Deborah Vogt; Drew Purves; Mark Rees; Andy Hector; Lindsay Turnbull.
Plant growth is an essential ecological process, integrating across scales from physiology to community dynamics. Predicting the growth of plants is essential to understand a wide range of ecological issues, including competition, plant-herbivore interactions and ecosystem functioning.&amp;#xd;&amp;#xa;A challenge in modeling plant growth is that growth rates almost universally decrease with increasing size, for a variety of reasons. Traditional analyses of growth are hampered by the need to remain within the structures of linear models, which handle this slowing poorly. We demonstrate the implementation of a variety of non-linear models that are more appropriate for modeling plant growth than are the traditional, linear,...
Tipo: Presentation
Palavras-chave: Ecology; Plant Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/5257/version/1

Assemblage-structuring force of species interactions varies spatially and temporally: Co-occurrence analysis of canopy arthropod distributions
Provedor de dados: 17
Autores: Matthew K. Lau; Laura E. Hagenauer; Thomas G. Whitham.
*Background/Question/Methods* Understanding how interactions amongst species contribute to their distribution is central to community ecology. However, it is not understood how these processes may change under different environmental conditions. In this study, we present evidence that suggests interactions amongst canopy arthropods contribute to assemblage structure, depending on both the sampling time and location. We sampled canopy arthropod species abundances on individual trees in three adjacent, monospecific stands of Populus fremontii (Fremont cottonwood), which differ in planting year (2000, 2002, 2005). We then conducted null-model based co-occurrence analysis using the freely available software EcoSim (Kesey-Bear and Acquired Intelligence, Inc.)...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3600/version/1

The effect of abiotic factors on asymbiotic nitrogen fixation in dead roots from the Pacific Northwest
Provedor de dados: 17
Autores: William T. Hicks; Hua Chen.
High rates of asymbiotic nitrogen fixation have been observed in dead roots.  However, little is known about how biotic and abiotic factors influence asymbiotic nitrogen fixation in dead roots.  The objective of this study was to examine how nitrogen fixation in dead roots responded to three abiotic factors: temperature, oxygen concentration, and moisture content by measuring acetylene reduction rates in dead roots.  For measuring the response to temperature and oxygen, we collected dead roots of Douglas-fir (Pseudotsuga menziesii) from one site in western Oregon, while the effect of moisture content was tested with samples from three species including Douglas-fir, western hemlock (Tsuga heterophylla), and Ponderosa pine (Pinus ponderosa) from three sites...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2011
URL: http://precedings.nature.com/documents/5626/version/1

SED-ML Web Tools
Provedor de dados: 17
Autores: Frank T. Bergmann.
This presentation gives a brief update of the current state of the libSedML library and its new capabilities (like the simulation of CellML models) and the SED-ML Script Editor.  &amp;#xd;&amp;#xa;Following I introduce the SED-ML Web Tools, an online application for creating, editing, simulating and validating SED-ML documents. The web application also provides a W3C Web Service, exposing all functionality.
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6328/version/1

Urban Tree Canopy Prioritization (UTC): Experience from Baltimore
Provedor de dados: 17
Autores: J. Morgan Grove; Dexter  Locke.
The recently emerging shift in urban land management to an &amp;#x201c;all lands, all people&amp;#x201d; approach to achieve critical urban sustainability goals created the need to 1) characterize landcover at the unit of individual property units: i.e. property parcels, and 2) integrate social and ecological data corresponding to diverse, sustainability goals so that all neighborhoods and parcels can be prioritized.  Currently, there are two types of UTC tools: 1) UTC Assessment and Monitoring tools are used to assess existing and potential urban tree canopy at a parcel level (2&amp;#x2019; resolution) and regional extent; and 2) UTC Prioritization tools are used to identify where to increase urban tree canopy at watershed, neighborhood, and parcel levels...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/6368/version/1

The BRIF: Success Factors and Crucial Considerations for Ensuring Impact.
Provedor de dados: 17
Autores: Lisa  B. Miranda.
This presentation focused on the potential of the BRIF to capture data that demonstrates the initial and long term impact of bioresources and those who direct/operate them for support/participation in biomedical and clinical research and their effects on clinical care outcomes. The focus of this talk is also to share ideas and provide different ways to look at the BRIF. The BRIF can be used to measure impact but may also be utilized to ensure and accelerate impact. Implementing the BRIF would potentially lead to significant positive downstream effects. Many challenges exist for the biobanking area ahead of this. One central issue that is delaying/impeding impact is the ability to create economically viable and sustainable resources.
Tipo: Presentation
Palavras-chave: Biotechnology; Genetics &amp; Genomics; Pharmacology; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/5877/version/1

Evaluating Modelling  Approaches for Medical  Image Annotations
Provedor de dados: 17
Autores: Jasmin Opitz; Bijan Parsia; Ulrike Sattler.
Information system designers face many challenges with regards to selecting appropriate semantic technologies and deciding on a modeling approach for their system. However, there is no clear methodology yet to evaluate &amp;#x201c;semantically enriched&amp;#x201d; information systems. In this paper we present a case study on different modeling approaches for annotating medical images and introduce a conceptual framework that can be used to analyze the fitness of information systems and help designers to spot the strengths and weaknesses of various modeling approaches as well as managing trade-o&amp;#xfb00;s between modeling e&amp;#xfb00;ort and their potential benefits.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5609/version/1

Advanced thermodynamic and processing modelling integration for amine scrubbing in post-combustion CO~2~ capture
Provedor de dados: 17
Autores: Niall Mac Dowell; Amparo Galindo; Claire S. Adjiman; George Jackson.
The reduction in CO~2~ emissions from anthropogenic sources has become a topic of widespread interest over the past number of years. As the power generation sector is by far the largest stationary-point-source of CO~2~, being responsible for approximately 35% of total global CO~2~ emissions^1^ this question has special relevance for this industry. As the inclusion of carbon capture facilities incurs a significant energy penalty on the efficiency coal-fired power-stations, there is a strong requirement for the improvement of these systems in terms of the minimisation of operation and maintenance costs, capital costs and the maximisation of efficiency and flexibility. This last issue has relevance for start-up times and ramp-rates. Post-combustion capture...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2638/version/1

Using ABC for model design and inference across biological scales
Provedor de dados: 17
Autores: Oliver  Ratmann.
Using ABC for model design and inference across biological scales.
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5960/version/1

A quick trip through openness, freedom and transparency
Provedor de dados: 17
Autores: Konrad U. Foerstner.
This talk aims to give scientists an introduction to the concepts of openness, freedom and transparency and their applications (not only) for science. It covers the topics of open source, open formats, Creative Commons, open access, and open science/knowledge. A video of the talk is available on the author&amp;#x27;s website.&amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/1225/version/1

Challenging or Reinforcing Social Prejudice?
Provedor de dados: 17
Autores: Helen Longino.
Behavior genetics holds out the hope of unbiased study of the biological bases of human behavior. Without more rigorous reflection on behavioral concepts, however, behavior genetics will succeed only in reinforcing social biases. This point is illustrated with reference to studies on aggression, sexual orientation, and gender differences.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch Professor Longino&amp;#x27;s presentation, please see the &amp;#x22;Google Video posting&amp;#x22;:http://video.google.com/videoplay?docid=-3926548921438712173&amp;#x26;hl=en.
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2567/version/1

Eco-evolutionary consequences of road adjacency and road salt on the wood frog, Rana sylvatica
Provedor de dados: 17
Autores: Steven P. Brady.
The network of roads on the landscape is vast, and has wide-reaching ecological influence. Recent investigations have focused on understanding impacts of contaminants from road runoff, especially deicing agents such as road salt. Despite growing research concerning ecological impacts of roads, our understanding of long-term consequences remains nascent. This stems in part from a dearth of investigations, and in part because ecological research typically ignores evolution on contemporary timescales. Yet reports of evolution influencing ecological outcomes are growing, suggesting this influence may be the rule rather than the exception. This may be especially true for species with spatially structured populations. For amphibians, such structuring coupled...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment; Evolutionary Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/3674/version/2

Nanotechnology: Giga game for soils
Provedor de dados: 17
Autores: Siddhartha Mukhopadhyay.
Research on colloidal properties of soils, especially of its clay and decayed organic matter components are pillars of edifice of soil science. The colloids control almost all soil reactions, but their behavior is controlled by dilution, change in pH, ion exchange, accretion of bases and many other processes, some of which are natural, while many others are anthropogenic. The anthropogenic manipulation of soils is the foundation of agrarian civilization, but spread into managed-forest, and urban ecosystems with time. In the twentieth century, great breakthroughs have been achieved in order to make soils more productive and responsive to environmental challenges. Historically, soil science as a discipline showed enormous capacity to absorb scientific...
Tipo: Presentation
Palavras-chave: Chemistry; Ecology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/5791/version/1

Introduction to the Baltimore Ecosystem Study, Long-Term Ecological Research Project, Phase III
Provedor de dados: 17
Autores: Steward T. A. Pickett.
The Baltimore Ecosystem Study (BES) is one of two urban Long-Term Ecological Research (LTER) projects in the United States.  It began its third funding cycle in 2011.  Although the project continues key measurements that were started in 1997 at the inception of the research, the third phase is characterized by a new conceptual framework.  Phase III of BES focuses on metropolitan Baltimore, Maryland, as a system poised for transition from a &amp;#x22;sanitary city&amp;#x22; -- characterized by engineered environmental solutions, management via discrete disciplines, and government control to a &amp;#x22;sustainable city&amp;#x22; -- which would be characterized by additional biological solutions, collaborative management, and polycentric and multi-level...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/6499/version/1

A network-based signaling mechanism of cancer development and progression
Provedor de dados: 17
Autores: Edwin Wang.
We conducted a comprehensive analysis of a manually curated human signaling network containing 1634 nodes and 5089 signaling regulatory relations by integrating cancer-associated genetically and epigenetically altered genes. We find that cancer mutating genes are enriched in positive signaling regulatory loops, whereas the cancer-associated methylating genes are enriched in negative signaling regulatory loops. We further characterized an overall picture of the cancer-signaling architectural and functional organization. From the network, we extracted an oncogene-signaling map, which contains 326 nodes, 892 links and the interconnections of mutated and methylated genes. The map can be decomposed into 12 topological regions or oncogene-signaling blocks,...
Tipo: Presentation
Palavras-chave: Cancer; Genetics &amp; Genomics; Bioinformatics.
Ano: 2008
URL: http://precedings.nature.com/documents/2238/version/1

Effect Of A Dialysis Session On Plasma Branched Chain Aminio Acids In Hemodialysis Patients
Provedor de dados: 17
Autores: Varikasuvu Seshadri Reddy; PVLN Srinivasa Rao; Aparna R. Bitla; Siva V. Kumar; MM Suchitra; Prabhakar E. Reddy.
Protein and amino acid (AA) metabolism is abnormal in End stage renal disease (ESRD). Hemodialysis (HD) procedure is a strong catabolic stimulus. Branched chain amino acids (BCAAs) can affect other AA levels by reducing AA efflux from muscle due to inhibition of muscle protein degradation. Essential amino acids and keto acid supplements including BCAA and branched-chain keto acid (BCKA) are proposed to decrease protein intake while maintaining protein status. This study was taken up to evaluate the effect of a dialysis session on plasma BCAA&amp;#x2019;s for which fifteen patients of ESRD on Maintenance HD, thrice a week were recruited into the study. Analysis was done on samples drawn at the beginning (pre-HD) and after the end of each dialysis session...
Tipo: Presentation
Palavras-chave: Chemistry; Molecular Cell Biology; Pharmacology.
Ano: 2011
URL: http://precedings.nature.com/documents/6475/version/1

Can we detect changes in high-latitude soil respiration over decadal time scales?
Provedor de dados: 17
Autores: Ben Bond-Lamberty; Allison Thomson.
Soil respiration (RS), the soil surface CO~2~ flux, is the second-largest terrestrial carbon flux, but because of its high variability and the inaccessibility of the soil medium it remains one of the least well-constrained parts of the terrestrial carbon cycle. If the carbon stored in high-latitude ecosystems is being mobilized by climate changes (whether by increasing temperature, changing precipitation, altered disturbance regimes, etc.) we may be able to detect RS changes in the now forty-year record of RS chamber measurements. We searched the published literature and found 194 RS observations from 1964 to 2008 at high latitudes, and paired their known measurement locations with a global climate data set spanning the time period. Linear regression was...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/4093/version/1

Concurrent, Collaborative &amp;#xb;Ontology Building&amp;#xb; with Collaborative Prot&amp;#xe9;g&amp;#xe9; (CP)
Provedor de dados: 17
Autores: Daniel Schober.
Creation of an ontology according to some common plan is best accomplished collaboratively. This is sometimes contradicted by the distribution of the ontology&amp;#x2019;s developers. An obvious solution therefore is to build collaboration into ontology development tools. Such support necessarily includes both the technical means to perform editing operations upon an ontology, but also support for the communication that makes collaboration such a vital part of much ontology development. To investigate the distributed, collaborative ontology engineering process and the corresponding capabilities of the Collaborative Protege 3 (CP) tool, members of the OntoGenesis network came together and enriched the Ontology of Biomedical Investigations (OBI) with new...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3516/version/1

Not a slow snail: Rapid rise of environmental awareness and ecological insights regarding invasive island apple snails (Pomacea insularum)
Provedor de dados: 17
Autores: Romi Burks; Jess Van Dyke.
*_Background/Question/Methods_*&amp;#xd;&amp;#xa;Exotic invaders routinely move faster than scientific publication processes.  Lacking aerial dispersal stages, snails generally match descriptions of slow colonizers.  However, reminiscent of the pace with which zebra mussels gained notoriety, a growing sense of urgency has emerged from management communities regarding established populations of exotic, invasive island apple snails (_Pomacea insularum_).  Recently separated by mitochondrial markers as a related, yet distinct, species, _P. insularum_ sits poised to follow along the invasive trajectory of its better known relative, the golden apple snail (_P. canaliculata_).  Literature studies examining mechanisms that promote invasiveness suggest family...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3853/version/1

Grapevines (Vitis spp.) as Components of the &amp;#xb;North American Prairie Biomass Economy:&amp;#xb;&amp;#xb; High-Value Phytochemicals, Platform Chemicals, and Bioenergy
Provedor de dados: 17
Autores: Sierra Rayne.
Grapevines (Vitis spp.) offer the potential for contributing to the North American prairie biomass based economy. While these regions are too cold for the traditional V. vinifera wine grape species, they are well-suited for more cold hardy varietals. The grapevines provide opportunities for high-value phytochemicals and platform chemicals (primarily stilbene based) as well as bioenergy production from resulting lignocellulosic residues. In a biorefinery concept, the &amp;#x27;front-end&amp;#x27; high-value phytochemicals could help subsidize the lower-value bioenergy production.
Tipo: Presentation
Palavras-chave: Chemistry; Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2145/version/1

Evaluation of resistance in wheat against Rhopalosiphumpadi (L.) (Homoptera:Aphididae) Under laboratory Conditions
Provedor de dados: 17
Autores: Naheed Akhtar; Noreen Moin; Ghulam Jilani; Ata  U. Mohsin; Shaheena  Yasmin; Afzala Afzala; Munir Goraya; Atif A. Baig.
Aims and introduction&amp;#xd;&amp;#xa;All over the world aphids are pests of economic importance, affecting all varieties of plants like cereal crops, vegetables, ornamental plants and fruits. Aphids damage plants either directly or indirectly. Aphids are one of the major agricultural pests. There are only a few plants that are not susceptible to infestation by this destructive pest. They cause direct damage by sucking the sap of leaves, blocking photosynthesis which results in leaf distortion, gall production, discoloration, stunting, leaf curling, wilting, twisting and premature leaf falls. They are directly involved in transmission of plant viruses and indirectly by depositing honey dew that reduces photosynthetic activity and induces sooty mold...
Tipo: Presentation
Palavras-chave: Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5947/version/1

Populous: A Tool For Populating OWL Ontologies From Templates
Provedor de dados: 17
Autores: Simon Jupp.
We present Populous, a tool for gathering content with which to populate an ontology. Domain experts need to add content, that is often repetitive in its form, but without having to tackle the underlying ontological representation. Populous presents users with a table based form in which columns are constrained to take values from particular ontologies; the user can select a concept from an ontology via its meaningful label to give a value for a given entity attribute.&amp;#xd;&amp;#xa;Populated tables are mapped to patterns that can then be used to automatically generate the ontology&amp;#x27;s content. Populous&amp;#x27;s contribution is in the knowledge gathering stage of ontology development. It separates knowledge gathering from the conceptualisation...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5419/version/1

The future of annotation/biocuration
Provedor de dados: 17
Autores: Amos Bairoch.
Talk given at 3rd International Biocuration Conference. Berlin 2009
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3092/version/1

BioPax and SBML output from Reactome: where we are, where we are heading
Provedor de dados: 17
Autores: David Croft.
Reactome is a free, open-source, open access, pathway database. Currently, Reactome has over 5000 human proteins, involved in over 4000 manually curated reactions.  Additionally, it has nearly 30,000 reactions inferred by orthology projection from human to 20 other model organisms.  Facilities exist for exporting single pathways or the entire database to either BioPax or SBML.  SBML generation now uses libSBML, ensuring syntactic correctness, and has adopted MIRIAM URIs for references to external databases.  For the future, we anticipate that users will be able to submit a list of species to Reactome and obtain as an output customized BioPax or SBML, based on reactions extracted from Reactome.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6376/version/1

Dust in the wind &amp;#x2013; drift of dust containing insecticides &amp;#x2013; a risk for honey bees (_Apis mellifera_ L.)?
Provedor de dados: 17
Autores: Pablo T. Georgiadis; Jens Pistorius; Udo Heimbach.
In late April 2008, dust drift containing insecticide resulted in the largest bee poisoning in Germany for 30 years. The reason for these incidents was the contamination of flowering bee forage plants with dust particles abraded from maize seeds treated with Clothianidin recorded in the Upper Rhine Valley, Baden-Wuerttemberg and in parts of Bavaria during sowing of maize.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Clothianidin, an insecticidal active substance from the group of neonicotinoids, works as agonist at the nicotinic acetylcholine receptors with broad spectrum of efficacy. Clothianidin is also used as a seed dressing of maize (agent for seed treatment &amp;#x201c;Poncho Pro&amp;#xae;&amp;#x201d;; 1,.25 mg a.i. Clothianidin./kernel) for the control of the...
Tipo: Presentation
Palavras-chave: Chemistry; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5738/version/1

A generic approach for representing complex structures in biological models
Provedor de dados: 17
Autores: Robert I. Muetzelfeldt.
Increasingly, the biological modelling community is looking for ways of handling complex and possibly dynamic structures in their models.   On the one hand, the pathway-modelling groups (SBML and CellML) seek to move up levels of organisation, while on the other hand the &amp;#x22;Virtual X&amp;#x22; communities (where X is some organism or organ) need to represent the organisational structure within their object of study.   To date, various approaches have been proposed, such as  the SBML Level 3 &amp;#x27;comp&amp;#x27;, &amp;#x27;spatial&amp;#x27;, &amp;#x27;array&amp;#x27; and &amp;#x27;dyn&amp;#x27; extension packages, and domain-specific elements in languages such as NeuroML, but there is no generic approach intended to be adopted by the various...
Tipo: Presentation
Palavras-chave: Ecology; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5188/version/1

Computational system biology
Provedor de dados: 17
Autores: Ankit Geete.
Systems biology is a multi-disciplinary &amp;#xfb01;eld that deals with mechanisms involved in complex biological processes by considering them as integrated systems of multiple interacting components. The huge amount of data involved in this study necessitates the use of computational tools.
Tipo: Presentation
Palavras-chave: Biotechnology; Genetics &amp; Genomics; Molecular Cell Biology; Pharmacology; Bioinformatics.
Ano: 2012
URL: http://precedings.nature.com/documents/7104/version/1

Coexistence by recruitment variation: How large is the contribution of relative nonlinearity?
Provedor de dados: 17
Autores: Chi Yuan; Peter Chesson.
*Background/Question/Methods*&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Recruitment variation is believed to be an important mechanism of species coexistence in variable environments. This mechanism, however, is a composite of two other mechanisms: the storage effect, and relative nonlinearity. The storage effect is a formalization of the concept of temporal environmental niche differentiation.  It is well-understood theoretically and has been tested in natural systems such as forests and annual plant communities. Relative nonlinearity results from species differences in nonlinear responses to fluctuations in competition. Such differences arise whenever species differ in life-history traits such as mean longevity. While the storage effect is assumed to be the...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3595/version/1

Hematopoietic Cell Types:  Prototype for a Revised Cell Ontology
Provedor de dados: 17
Autores: Alexander D. Diehl.
The Cell Ontology (CL) is an OBO Foundry candidate ontology intended for the representation of cell types from all of biology.  A recent workshop sponsored by NIAID on hematopoietic cell types in the CL addressed issues of both the content and structure of the CL.  The section of the ontology dealing with hematopoietic cells was extensively revised, and plans were made for restructuring these cell type terms as cross-products with logical definitions based on relationships to external ontologies, such as the Protein Ontology and the Gene Ontology.  The improvements to the CL in this area represent a paradigm for the future revision of the whole of the CL.
Tipo: Presentation
Palavras-chave: Immunology; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3543/version/1

SBGN-PD: Current status, future changes and unresolved issues
Provedor de dados: 17
Autores: Stuart L. Moodie.
SBGN PD is currently at Level 1 Version 1.2, which is a maintenance release. The next release will be L1 Version 2.0, which will incorporate changes to the state glyph, add the annotation glyph and change the semantics of complex sub-units. These issues may be discussed further as will some unresolved issues in the specification.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5997/version/1

COMBINE and MIRIAM Registry
Provedor de dados: 17
Autores: Nicolas Le Novere.
N/A
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6152/version/1

Biological robotics and nanorobotred cells: Characterization and applications
Provedor de dados: 17
Autores: Rakesh Sharma; Soonjo Kwon; Ching J. Chen.
In human body, nanorobot-like red blood cells get exposed to human body fluids and many physico-chemical changes inside while these nanorobots (fullerene structure coated hemoglobin embedded iron inorganic elements) remain safe and perform killer action against bacteria or virus. We propose this killer action as &amp;#x2018;nanorobot driven nanomedical treatment&amp;#x2019; to combat a bacterial or viral infection. The red cells also act as imaging agent due to oxygen binding character. Our experiments were focused on the application of nanorobot (red cells) to make them immune resistant against viruses and making them as useful contrast agents in magnetic resonance imaging use based on their behavior in nanomagnetic fields. It consists of an injection of...
Tipo: Presentation
Palavras-chave: Biotechnology.
Ano: 2010
URL: http://precedings.nature.com/documents/4262/version/1

Comparison of histopathological&amp;#xb;features of Vibrio cholerae O1 El Tor and&amp;#xb;O139 Bengal infections in rabbit intestinal mucosa
Provedor de dados: 17
Autores: Atif  A. Baig.
Vibrio cholerae is the causative agent of the infectious disease, cholera. The bacteria adhere to the mucosal membrane and release cholera toxin, leading to watery diarrhea. There are &amp;#x3e;100 serovars of V. cholerae, but the O1 and O139 serovars are the main causative agents of cholera. The present study aimed to compare the severity of intestinal mucosal infection caused by O1 El Tor and O139 V. cholerae in a rabbit ileal loop model.&amp;#xd;&amp;#xa;The results showed that although the fluid accumulation was similar in the loops inoculated with O1 and O139 V. cholerae, the presence of blood was detected only in the loops inoculated with the O139 serovar. Serosal hemorrhage was confirmed by histopathological examination and the loops inoculated with...
Tipo: Presentation
Palavras-chave: Microbiology.
Ano: 2011
URL: http://precedings.nature.com/documents/6418/version/1

Pioneer Discovery of secondary gold deposits-unique bacterioforms andplacers in north Goa from deep coremetabiosphere
Provedor de dados: 17
Autores: Nandkumar M. Kamat.
Bacterioform secondary gold deposits were discovered in tilloid overlaying archaean base rock (metagraywacke) in Sanvordem rock formation, at the depth of 65 metres in north Goa , India and were confirmed optically as microbiogenic Gold. Multiple and unique forms were seen. This is claimed to be first report of bacterioform Gold in deep cores in Goa, India and Asia.
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Ecology; Genetics &amp; Genomics; Microbiology; Earth &amp; Environment; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5497/version/1

Mapping from Statistical to Biological Proximity
Provedor de dados: 17
Autores: Malay Bhattacharyya.
We verify whether the proximity claimed by state-of-the-art statistical similarity measures are indeed biologically appropriate or not. We present some analytical results on it.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2012
URL: http://precedings.nature.com/documents/7122/version/1

17 years of integrated research, monitoring, and management of HWA and hemlock ecosystems at Delaware Water Gap National Recreation Area
Provedor de dados: 17
Autores: Richard Evans.
Delaware Water Gap National Recreation Area (&amp;#x201c;the park&amp;#x201d;) covers 28,000 ha along the Delaware River in Pennsylvania and New Jersey. Eastern hemlock forests cover 2,200 ha (8%) of the park, and are often associated with trout streams and scenic waterfalls. Activities like trout fishing, bird watching, and hiking are concentrated in hemlock forests, and many of these areas are officially designated as &amp;#x201c;Outstanding Natural Features&amp;#x201d; having &amp;#x201c;high intrinsic or unique values.&amp;#x201d; In 1989 hemlock woolly adelgid (HWA) was detected in the park, and since 1993 the park has conducted a program to address the threats that hemlock woolly adelgid and hemlock decline poses to park resources. This program...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2011
URL: http://precedings.nature.com/documents/5520/version/1

Comparative genomics and disorder prediction identify biologically relevant SH3 protein interactions
Provedor de dados: 17
Autores: Pedro Beltrao; Luis Serrano.
Protein interaction networks are an important part of the post-genomic effort to integrate a part-list view of the cell into system-level understanding. Using a set of 11 yeast genomes we show that combining comparative genomics and secondary structure information greatly increases consensus-based prediction of SH3 targets. Benchmarking of our method against positive and negative standards gave 83% accuracy with 26% coverage. The concept of an optimal divergence time for effective comparative genomics studies was analyzed, demonstrating that genomes of species that diverged very recently from _Saccharomyces cerevisiae_ (_S. mikatae_, _S. bayanus_, and _S. paradoxus_), or a long time ago (_Neurospora crassa_ and _Schizosaccharomyces pombe_), contain less...
Tipo: Presentation
Palavras-chave: Ecology; Bioinformatics; Evolutionary Biology.
Ano: 2007
URL: http://precedings.nature.com/documents/16/version/1

ExO: An Ontology for Exposure Science
Provedor de dados: 17
Autores: Carolyn J. Mattingly; Thomas  E. McKone; Michael Callahan; Judith  Blake; Elaine A. Cohen Hubal.
An ontology is a formal representation of knowledge within a domain and typically consists of classes, the properties of those classes, and the relationships between them.  Ontologies are critically important for specifying data of interest in a consistent manner, thereby enabling data aggregation, analysis and exchange.  An exposure ontology, consistent with those being used in toxicology and other health sciences, is required to formally represent exposure concepts, the relationships between these concepts and most important, the relationships between exposure, susceptibility, and toxicology information.  A successful exposure ontology must facilitate the semantic retrieval of exposure data in the context of environmental health science, medical...
Tipo: Presentation
Palavras-chave: Chemistry; Ecology; Genetics &amp; Genomics; Bioinformatics; Earth &amp; Environment; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6321/version/1

The Effects of Climate Change on the Phenological Interactions of Plants and Pollinators
Provedor de dados: 17
Autores: David W. Inouye.
Symposium title: Interdisciplinary Canary: Linkages between Ecology and Sustainable Decision Making in a Dynamic Environment&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;*1) Background/Question/Methods*&amp;#xd;&amp;#xa;The responses of pollinators to climate change could include changes in phenology of migratory pollinators and in the routes or destinations for their migration, changes in the phenology and distribution of non-migratory species, and changes in the host plants they visit for nectar and pollen.  Plants face similar challenges with regard to changes in their distributions, their reproductive phenology, and interactions with both co-flowering species and pollinators (competition, facilitation, etc.).  Unless pollinators and their host plants are...
Tipo: Presentation
Palavras-chave: Ecology; Plant Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/3583/version/1

Control in technological systems and physical intelligence: an emerging theory
Provedor de dados: 17
Autores: Bradly Alicea.
The transduction and processing of physical information is becoming important in a range of research fields, from the design of materials and virtual environments to the dynamics of cellular microenvironments. Previous approaches such as morphological computation/soft robotics, neuromechanics, and embodiment have provided valuable insight. This work approaches haptic, proprioception, and physical sensing as all part of the same subject. In this presentation, three design criteria for applying physical intelligence to engineering applications will be presented. These criteria have several properties in common, which inspires two types of end-effector model: stochastic (based on a spring) and deterministic (based on a piezomechanical array). The generalized...
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Molecular Cell Biology; Neuroscience.
Ano: 2011
URL: http://precedings.nature.com/documents/5910/version/1

Ecological, phenological and biochemical significance of bimodal fruiting of Boletus alutaceus morgan
Provedor de dados: 17
Autores: Nandkumar Kamat.
Boletus alutaceus Morgan an ectomycorrhizal species was extensively studied from an ecologically fragmented microhabitt colonized by its&amp;#x27; host plant Ficus benghalensis L. in the Goa University campus, Taleigao, Goa, India. Qualitatively the fruiting cycles were monitored for three years and thereafter detail ecological and morphological investigations were carried out in May and November 2004. A bimodal temporal fruting pattern emerged which may have significant ecological, phenological and biochemical role in EM dynamics.
Tipo: Presentation
Palavras-chave: Biotechnology; Developmental Biology; Ecology; Genetics &amp; Genomics; Microbiology; Plant Biology; Evolutionary Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/2835/version/1

An Ontology-Based Framework for Clinical Research Databases
Provedor de dados: 17
Autores: Richard H. Scheuermann; Megan Kong; Carl Dahlke; David Karp.
The Ontology-Based eXtensible data model (OBX) was developed to serve as a framework for the development of a clinical research database in the Immunology Database and Analysis Portal (ImmPort) system.  OBX was designed around the logical structure provided by the Basic Formal Ontology (BFO) and the Ontology for Biomedical Investigations (OBI).  By using the logical structure provided by these two well-formulated ontologies, we have found that a relatively simple, extensible data model could be developed to represent the relatively complex domain of clinical research.  In addition, the common framework provided by the BFO should make it straightforward to utilize OBX database data dictionaries based on reference and application ontologies from the OBO...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3482/version/1

Getting The Most Out of Your Research
Provedor de dados: 17
Autores: Folarin A. Erogbogbo.
Research is the cornerstone of invention, facilitator of innovation, and mother of discovery. Even though many students are competent in advancing through the class room and getting good grades, excellent research requires a different set of attitudinal and academic skills. This workshop, &amp;#x22;Get the most out of your research&amp;#x22; is an outstanding program developed from extensive time spent with brilliant scientists and a wide variety of mentored students.  Familiarize yourself with the fine points of this workshop and arm yourself for a successful research career.
Tipo: Presentation
Palavras-chave: Biotechnology; Cancer; Chemistry.
Ano: 2011
URL: http://precedings.nature.com/documents/5702/version/1

Adding automated data analysis and biological evaluation to affyanalysisQC
Provedor de dados: 17
Autores: Anwesha Dutta.
Almost every cell in the body contains a full set of chromosomes and identical genes. However, only a fraction of these genes are turned on, at any given time and it is this subset of genes that are expressed, which confers unique properties to each cell type.  Gene expression is the term used to describe the transcription of the information contained within the DNA into messenger RNA (mRNA) molecules that are then translated into proteins which perform most of the critical functions of cells. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Gene expression is a highly complex and tightly regulated process that allows a cell to respond dynamically both to environmental stimuli and to its own changing needs. This mechanism acts as both an on/off switch to control which...
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5969/version/1

The phage-host interaction as a model for studying carbon regulation in aquatic system
Provedor de dados: 17
Autores: Swapnil G. Sanmukh; Waman N. Paunikar; Dilip B. Meshram; Satish K. Lokhande; Tarun K. Ghosh.
This document contains the presentation by Swapnil G Sanmukh et al, National Environmental Engineering Research Institute (NEERI), Nagpur on &amp;#x201c;The phage-host interaction as a model for studying carbon regulation in aquatic system&amp;#x201d; during Second National Research Conference on Climate Change, organized by the Centre for Science and Environment, IIT Delhi and IIT Madras on November 5-6, 2011 at New Delhi.
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2012
URL: http://precedings.nature.com/documents/7059/version/1

Some statistical aspects of the monitoring of GM plants
Provedor de dados: 17
Autores: Joe N. Perry.
There are several challenges in the monitoring of: (1) long-term effects of GM plants on the environment, and (2) effects that may be small in terms population change but significant in terms of the conservation of biodiversity. The difficulties are compounded by variability in environmental conditions between sites and years. Some examples will be given from the Farm Scale Evaluations of GMHT crops in the UK. However, the talk will focus on more recent developments, including:&amp;#xd;&amp;#xa;(1)&amp;#x9;LandsFACTS software developed during the SIGMEA project for modeling rotations that might be used in risk management &amp;#xd;&amp;#xa;(see...
Tipo: Presentation
Palavras-chave: Plant Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4463/version/1

Using Textpresso for Information Retrieval, Fact Extraction
Provedor de dados: 17
Autores: Karen Yook; Kimberly Van Auken; Paul W. Sternberg; The WormBase Consortium.
Ten years ago WormBase^1^ started as a repository for sequence data for the model&amp;#xd;&amp;#xa;organism Caenorhabditis elegans and has since striven to include the curation of all&amp;#xd;&amp;#xa;genetic and molecular data published for this nematode. With a publication rate in the C.&amp;#xd;&amp;#xa;elegans field of approximately 800 papers per year, WormBase (WB) has the opportunity to include information from every paper published. Currently there are ~11,000 full text research papers (mid-1970&amp;#x27;s to the present) downloaded into the WB curation database, from which over 27 data types (i.e. genetic interactions, transgene objects, gene expression patterns, mutant phenotypes etc.) are extracted by curators. Textpresso^2^ is an open source...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3302/version/1

From Machine Learning to Learning Machines - A Perspective toward Personalized Medicine
Provedor de dados: 17
Autores: Malay Bhattacharyya.
We describe how to learn a network using a bottom-up approach by building networks from expression profiles. Then we can analyze these networks with different graph mining approaches and by studying topological behaviors. Finally, how we can achieve personalized medicine from the network biology.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2012
URL: http://precedings.nature.com/documents/7118/version/1

Metapopulation capacity with self-colonization: Finding the best patches in fragmented habitats
Provedor de dados: 17
Autores: Jessica K. Schnell; Gareth J. Russell; Grant M. Harris; Stuart L. Pimm.
Habitat fragmentation continues to be a leading threat for our global future. Methods to quantify fragmentation of habitat landscapes, particularly for endangered species, would be especially useful in conservation planning. Using the principles of metapopulation theory, we updated and devised two methods for analyzing fragmented landscapes: metapopulation capacity and abandonment rate. Our version of metapopulation capacity includes a self-colonization component to counteract the issue metapopulation theory experiences with single large patches. We then tested these methods on satellite image range maps of endemic birds in the highland forests of northern Central America.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The metapopulation capacity method proved to be a...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5356/version/1

Gene-Environment Interaction: Definitions and Study Designs
Provedor de dados: 17
Autores: Ruth Ottman.
Dr. Ruth Ottman first discussed different models of gene-environment interactions and then delved into designs of studies attempting to elucidate such interactions.  She stressed the importance of using the correct measurement scale, whether additive or multiplicative, noting that the additive measurement scale is more consistent with biological models.  Dr. Ottman concluded by reminding the audience of the need for very large sample sizes, and thus collaboration, in gene-environment interaction studies. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch Dr. Ottman&amp;#x2019;s presentation, please see the Panel 2 &amp;#x22;Google Video posting.&amp;#x22;:http://video.google.com/videoplay?docid=-8804321603731619003&amp;#x26;hl=en &amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2653/version/1

Design of carbon dioxide storage
Provedor de dados: 17
Autores: Martin J. Blunt.
Carbon capture and storage (CCS) &amp;#x2013; the collection of carbon dioxide (CO~2~) from industrial sources and its injection underground &amp;#x2013; is an important technology to reduce CO~2~ emissions to the atmosphere, mitigating climate change.  The North Sea, with mature hydrocarbon fields and saline aquifers offers an attractive storage location for CO~2~ produced by the UK&amp;#x2019;s gas and coal-fired power plants.  The principal concern with CCS is to ensure that the CO~2~ does not leak into the oceans or atmosphere over hundreds or thousands of years.  We propose a storage strategy where CO~2~ and brine are injected together followed by brine injection alone.  We predict that using this technique around 95% of the CO~2~ can be rendered...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2628/version/1

Noise, cycles, and noisy cycles in finite populations
Provedor de dados: 17
Autores: Mario Pineda-Krch.
Periodic predator-prey dynamics in constant environments are usually taken as indicative of deterministic limit cycles. It is known, however, that demographic stochasticity in finite populations can also give rise to regular population cycles, even when the corresponding deterministic models predict a stable equilibrium. The existence of quasi-cycles substantially expands the scope for natural patterns of periodic population oscillations caused by ecological interactions, thereby complicating the conclusive interpretation of such patterns. It is, however, feasible and straightforward to accurately distinguish between the two types of cycle through the combined analysis of autocorrelations and marginal distributions of population sizes. By confronting these...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2007
URL: http://precedings.nature.com/documents/48/version/1

SBML and Synthetic Biology
Provedor de dados: 17
Autores: Chris Myers.
This talk describes the synthetic biology open language (SBOL).
Tipo: Presentation
Palavras-chave: Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6343/version/1

Seminal Plasma Proteins
Provedor de dados: 17
Autores: P Perumal.
The ejaculated semen consists of two major components viz. sperm cells (spermatozoa) and the fluid part obtained after centrifugation called seminal plasma. The spermatozoa originate from the semniferous tubule and are suspended in the seminal plasma. The seminal plasma is composed of secretions contributed by the testis, epididymis, seminal vesicles, ampullae, prostate and bulbourethral glands. About 60-80 % of the ejaculated semen of the bull originates from these sources. Seminal plasma is a highly complex biological fluid containing proteins, amino acids, enzymes, fructose and other carbohydrates, lipids, major minerals and trace elements. Seminal plasma proteins partly originates from the blood plasma by exudation through the lumen of the male genital...
Tipo: Presentation
Palavras-chave: Chemistry.
Ano: 2012
URL: http://precedings.nature.com/documents/7001/version/1

Consortium for Functional Glycomics Overview
Provedor de dados: 17
Autores: James C. Paulson.
This presentation provides an overview of the Consortium for Functional Glycomics.
Tipo: Presentation
Palavras-chave: Chemistry; Molecular Cell Biology; Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/11/version/1

Metacuration Standards and Minimum Information about a Bioinformatics Investigation
Provedor de dados: 17
Autores: Tin Wee Tan; Asif M. Khan; Shen Jean Lim; Yong Li Hu; Mark de Silva; Kuan Siong Lim.
Many bioinformatics databases published in journals are here this year and gone the next. There is generally (i) no requirement, mandatory or otherwise, by reviewers, editors or publishers for full disclosure of how databases are built and how they are maintained; (ii) no standardized requirement for data in public access databases to be kept as backup for release and access when a project ends, when funds expire and website terminates; (iii) the case of proprietary resources, there is no requirement for data to be kept in escrow for release under stated conditions such as when a published database disappears due to company closure. Consequently, much of the biological databases published in the past twenty years are easily lost, even though the...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5078/version/1

WikiPathways: Community Curation of Biological Pathways
Provedor de dados: 17
Autores: Alexander Pico.
Assembling biological pathways from information in scientific literature and biological databases is a challenging task. Building a pathway requires domain knowledge from specialists in various biological research areas. Furthermore, research is generating new biological knowledge continuously, making pathway curation an ongoing and dynamic process. To facilitate this process we developed &amp;#x22;WikiPathways&amp;#x22;:http://www.wikipathways.org/index.php/WikiPathways ^1^, a wiki where users can curate pathways, using an easy to use pathway drawing tool. WikiPathways currently has over 1200 registered users and contains more than 1300 pathways for various organisms, spanning human, mouse, zebrafish, fruit fly, worm, yeast, plants and bacteria....
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5359/version/1

Towards Desiderata for an Ontology of Diseases for the Annotation of Biological Datasets
Provedor de dados: 17
Autores: Olivier Bodenreider; Anita Burgun.
There is a plethora of disease ontologies available, all potentially useful for the annotation of biological datasets. We define seven desirable features for such ontologies and examine whether or not these features are supported by eleven disease ontologies. The four ontologies most closely aligned with our desiderata are Disease Ontology, SNOMED CT, NCI thesaurus and UMLS.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3536/version/1

BRIF workshop working group.
Provedor de dados: 17
Autores: Laurence Mabile.
Number of attendees, geographical origin of the group, skills and areas represented, tools developed to help the BRIF progress.
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/5582/version/1

Ferric reducing antioxidant power and free radical scavenging activity of  Moringa oleifera: Relevance in oxidative stress
Provedor de dados: 17
Autores: Suaib  Luqman.
Moringa oleifera of family Moringaceae, commonly known as Horseradish-tree or the Ben-oil tree is an exceptionally nutritious vegetable tree with a variety of medicinal uses, distributed in tropical and subtropical regions of the world. The tree&amp;#x27;s bark, roots, fruit (pod), flowers, leaves, seeds and gum are used as an antiseptic, anticancer, anti-inflammatory, hepatoprotective and in treating rheumatism, venomous bites and other conditions. The immature green pods, called &amp;#x2018;drumsticks&amp;#x2019; are probably the most valued and widely used part of the tree for water purification (e.g. desalination of ocean salt water). The leaves are highly nutritious, being a significant source of beta-carotene, vitamin C, protein, iron and potassium...
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Pharmacology.
Ano: 2012
URL: http://precedings.nature.com/documents/6924/version/1

Digital BioCuration: A Question of Balance
Provedor de dados: 17
Autores: James Ostell.
Curation of biomedical data has come to encompass a broad range of activities and considerations, which include the building of digital archives, making decisions on the relative value and longevity of one dataset vs another, editing data records manually, performing or assessing computational processes over very large sets of data, and grappling with issues of web usability and data standards. People who consider themselves biological curators may range from a single domain expert, who develops a collection which reflects their personal judgments and priorities, to groups of people supporting large, long term public resources such as GenBank, RefSeq, or PubMed, and everything in between. Finding the right balance between objective measures of quality and...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Immunology; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3257/version/1

Eutrophication: Can nanophosphorous control this menace?
Provedor de dados: 17
Autores: Deepika  Bhalla; Siddhartha  S. Mukhopadhyay.
Eutrophication is a threat to quality of surface and ground water bodies (SWB) and to bio-diversity of the aquatic eco-system. One of the causes of P accumulation in SWB is its excess application as a fertilizer on agricultural lands. Phosphorus buffering also contributes to eutrophication and remains a major problem years after the release of P is brought under control. It could be discerned from many experiments conducted world over that addition of small amount of P can remove excess P from soils, provided the solution P is maintained in such a manner that productivity is sustained, and nano-P could possibly play a role in it. In such endeavours, P must be applied to soils in amount exact to the requirement of crop. Of course ecological cautions of use...
Tipo: Presentation
Palavras-chave: Chemistry; Ecology; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3763/version/1

The Costs and Benefits of Lousy Measures of the Environment
Provedor de dados: 17
Autores: Eric Turkheimer.
Dr. Eric Turkheimer focused on the nonshared environment project and pointed to the nonshared environment and its components as the central problem of human scientific psychology.   He described three causal models, applying them to each genetic and environmental causation, and concluded that rough measurements lead to detectable causations, but more precise measurements make the effects harder to detect. &amp;#xd;&amp;#xa; &amp;#xd;&amp;#xa;To watch Dr. Turkheimer&amp;#x2019;s presentation, please see the Panel 2 &amp;#x22;Google Video posting.&amp;#x22;:http://video.google.com/videoplay?docid=-8804321603731619003&amp;#x26;hl=en
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2655/version/1

Examining methanogens in northern peatlands: Potential role of ecological and latitudinal trends
Provedor de dados: 17
Autores: Hinsby Cadillo-Quiroz.
Background/Question/Methods&amp;#xd;&amp;#xa;Peatlands are a type of wetlands where accumulation of organic matter exceeds its decomposition. They are primarily distributed in northern latitudes and store more carbon than any other terrestrial ecosystem (~455 Pg). Methane (CH4) production is one of the most important microbially-driven processes relevant to the global influence of peatlands in carbon cycling and atmospheric change. Multiple factors have been found to affect CH4 production in peatlands. However, little is known about the Archaea performing this process. Geochemical, molecular, culturing and genomics techniques have allowed us to pursue questions about the diversity, abundance, distribution, and adaptations of methanoarchaea inhabiting...
Tipo: Presentation
Palavras-chave: Ecology; Microbiology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/5507/version/1

Statistical analysis of network data and evolution on GPUs: High-performance statistical computing
Provedor de dados: 17
Autores: Thomas W. Thorne; Michael P. H. Stumpf.
Network analysis typically involves as set of repetitive tasks that are particularly amenable to poor-man&amp;#x27;s parallelization. This is therefore an ideal application are for GPU architectures, which help to alleviate the tedium inherent to statistically sound analysis of network data. Here we will illustrate the use of GPUs in a range of applications, which include percolation processes on networks, the evolution of protein-protein interaction networks, and the fusion of different types of biomedical and disease data in the context of molecular interaction networks. We will pay particular attention to the numerical performance of different routines that are frequently invoked in network analysis problems. We conclude with a review over recent...
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2012
URL: http://precedings.nature.com/documents/6874/version/1

Comparison of computationally- and manually-assigned Gene Ontology annotations to improve functional characterization of gene products.
Provedor de dados: 17
Autores: Maria Costanzo; Rama Balakrishnan; Karen Christie; Eurie Hog; Julie Park; J. Michael Cherry.
The Gene Ontology (GO) describes molecular functions, biological processes, and cellular components of gene products using controlled-vocabulary terms that are related to each other in a structure that facilitates computing on GO annotations within and across species. Experimentally-based GO annotations that are manually curated from the literature are often used to predict the functions of related uncharacterized proteins. The accuracy of such annotations is thus critically important, particularly for a well-studied model organism such as _Saccharomyces cerevisiae_ which is frequently used as the source of the experimental data. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Comparison of experimentally-based annotations with those predicted by computational methods...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5095/version/1

Measuring impact in online resources with the CI&amp;#xad;number (the CitedIn Number for online impact)
Provedor de dados: 17
Autores: Andra Waagmeester; Chris Evelo.
CitedIn is a webservice that can be found at www.citedin.org. It tracks online citations in databases, blogs, wikis, and community sites to the literature covered in Pubmed. For biomedical scientific literature Pubmed is by far the most interesting resource. Pubmed is the interface to the Medline repository which covers over 1 century of publications and contains almost all relevant publications in the field. Pubmed uses very simple unique numeric identifiers. This makes it easy to cite publications using these Pubmed Identifiers (PMIDs) or to link to Pubmed itself based on those. This ease of use results in PMIDs often being used for online citations, this is often the standard in biomedical databases and for instance in Wikipedia. CitedIn uses a federate...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6037/version/1

Open Biomedical Ontologies Applied to Prostate Cancer
Provedor de dados: 17
Autores: James A. Overton; Cesare Romagnoli; Rethy Chhem.
In this presentation we survey preliminary results from the Interdisciplinary Prostate Ontology Project (IPOP), in which ontologies from the Open Biomedical Ontologies (OBO) library have been used to annotate clinical reports about prostate cancer. First we discuss why we rejected several controlled vocabularies, including SNOMED, DICOM, and RadLex, preferring instead to use the OBO library. We then briefly describe the database-backed website we have created around the relevant OBO ontologies, and provide excerpts of reports from radiology, surgery, and pathology which we have hyperlinked to the ontology terms. This method allows us to discover which relevant terms exist in the OBO library, and which do not. The final section of this paper discusses these...
Tipo: Presentation
Palavras-chave: Cancer; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3589/version/1

Effect Of Pre-freeze Addition Of Cysteine Hydrochloride And Reduced Glutathione On Post-thaw Sperm Parameters And Field Fertility In Jersey Crossbred Bull Semen
Provedor de dados: 17
Autores: P Perumal; S Selvaraju; A.K. Barik; D. N.  Mohanty; Srinibas Das; P.C. Mishra.
The present study was aimed to assess the effect of pre-freeze addition of cysteine hydrochloride and glutathione (GSH) on post-thaw sperm functional parameters and field fertility. The experimental bulls aged 4 to 6 years were used for the present study. A total of 36 ejaculates, 6 ejaculates from each bull (n=6) were collected and divided in to three groups, group I (control), group II (5mM cysteine hydrochloride) and group III (5mM GSH). The extended semen samples were added with @5mM additives, filled in mini straw using automatic filling and sealing machine (IMV, France) and cryopreserved in liquid nitrogen. Post-freeze seminal traits were also recorded after thawing at 37oC for 30 seconds. Post thaw livability was significantly (p&amp;#x3c; 0.01)...
Tipo: Presentation
Palavras-chave: Chemistry.
Ano: 2012
URL: http://precedings.nature.com/documents/7009/version/1

Revolutionizing scientific communication and collaboration
Provedor de dados: 17
Autores: Konrad U. Foerstner.
This presentation introduces new web-based ways of scientific communication and collaboration. It focuses on wikis and the _First Online EMBL PhD Symposium_ as an example of an online conference.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/153/version/1

Improving the worthiness of the Elder problem as a benchmark for buoyancy driven convection models
Provedor de dados: 17
Autores: Maarten van Reeuwijk; Simon A. Mathias; Craig T. Simmons; James D. Ward.
An important trapping mechanism associated with the geosequestration of CO~2~ is that of dissolution into the formation water. Although supercritical CO~2~ is significantly less dense than water, experimental data reported in the literature show that the density of an aqueous solution of CO~2~ could be slightly greater. Under normal situations, the transfer of gas to solution is largely controlled by the relatively slow process of molecular diffusion. However, the presence of variable densities can trigger off gravity instabilities leading to much larger-scale convection processes. Such processes can potentially enhance rates of dissolution by an order of magnitude. Consequently there is a need for future performance assessment models to incorporate...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2633/version/1

Frost and flowers: Predicting the effects of climate change on spring frost damage using a large pollen count dataset
Provedor de dados: 17
Autores: Daniel Katz.
Background/Question/Methods &amp;#xd;&amp;#xa;Climate change is resulting in warmer average temperatures in much of North America, leading to earlier flowering dates for most tree genera.  However, earlier flowering dates can increase the chance of frost damage which may in turn reduce or eliminate seed and fruit production.  This has important implications for both forest regeneration and the organisms which depend on these resources.&amp;#xd;&amp;#xa;Although specific examples, such as the &amp;#x201c;Easter frost&amp;#x201d; of 2007, show that frost damage can have extreme short term impacts on tree reproduction, we lack a general understanding of the frequency and importance of these events in non-agricultural contexts.  Moreover, the magnitude by...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment; Plant Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/5365/version/1

21 Tesla MRI Microscopy of Mice Kidney, Heart and Skin: Quantitation of MRI Visible Features
Provedor de dados: 17
Autores: S Sharma; Rakesh Sharma.
Excised mice kidney, heart and skin MRI visible features were quantitated using ex vivo 21 Tesla MRI microimager. The fast MRI acquisition protocols of FLASH, gradient echo flow compensated (GEFC) techniques were used to visualize microvasculature of mice kidney, mice heart including cardiac arteries, veins, cordate tendons and mice skin epidermis with hair follicle features.
Tipo: Presentation
Palavras-chave: Biotechnology.
Ano: 2009
URL: http://precedings.nature.com/documents/3484/version/1

LibSBGN Status Update
Provedor de dados: 17
Autores: Martijn van Iersel; Tobias Czauderna; Alice C. Villeger.
LibSBGN is a library for reading, writing and validating maps that use the Systems Biology Graphical Notation (SBGN). The goals of LibSBGN are to 1) increase interoperability between pathway visualization tools, 2) increase the amount of code re-used, and 3) make it easier for tool developers to adopt the SBGN standard. This presentation is a status update of the project, presented at the COMBINE 2011 meeting.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6373/version/1

Exchanging Experimental Kinetic Data via SabioML
Provedor de dados: 17
Autores: Martin Golebiewski.
The simulation of quantitative biochemical models not only requires qualitative information about the stoichiometry of the described networks, but also kinetic data describing their dynamics. Such kinetic data have to be experimentally measured, collected, systematically structured and stored to finally make them accessible. However, the dataflow from the experiment to the model is still a bottleneck, calling for systems that capture the data directly from the instrument, process and normalize it to agreed standards and finally transfer the data to publicly available databases.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;SABIO-RK (http://sabio.h-its.org) is a curated database system which we have developed for bundling data referring to biochemical reactions and...
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5030/version/1

The impact of forest logging and fragmentation on the species richness and density of Malagasy rainforest carnivores
Provedor de dados: 17
Autores: Brian D. Gerber; Sarah M. Karpanty; Johny S. A. R. A. H. Randrianantenaina.
Despite significant efforts to understand and conserve Madagascar&amp;#x2019;s unique biodiversity, relatively little is known about the island&amp;#x2019;s carnivore populations.  We sampled four rainforest sites to explore the effects of forest logging and fragmentation on carnivore species richness and the density of the two largest endemic carnivores, the Fossa (Cryptoprocta ferox) and Malagasy Civet (Fossa fossana). Our rainforest sites were selected across a gradient of increasing anthropogenic disturbance from primary to selectively-logged to fragmented forest &amp;#x3c; 2.5 km from primary forest, to fragmented forest &amp;#x3e; 20 km from primary forest. We deployed a minimum of 26 passive infrared camera stations at each forest site to...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5259/version/1

Toward a Complete Phyloreferencing Language
Provedor de dados: 17
Autores: T. Michael Keesey.
A phyloreference is a statement indicating a taxon within a phylogenetic context. A common use for phyloreferences is in phylogenetic definitions, which tie taxonomic names to taxa via such statements. Several conventions for writing phyloreferences have been proposed, but most only cover a few &amp;#x201c;standard&amp;#x201d; forms (node&amp;#x2011;, branch&amp;#x2011;, and perhaps apomorphy&amp;#x2011;based clades) without the capacity to represent more &amp;#x201c;exotic&amp;#x201d; forms (e.g., ancestor&amp;#x2011;based clades and qualified/modified references). In order to build a complete phyloreferencing language, the mathematical underpinnings of phylogenetic contexts must be clarified. A phylogenetic context may be modeled as a directed, acyclic...
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4652/version/1

Maize gene review - A new on-line journal promotes community curation of phenotypes
Provedor de dados: 17
Autores: Mary L. Schaeffer.
The first formal phenotype summaries for maize can be found in early editions of the&amp;#xd;&amp;#xa;Maize Genetics Cooperation Newsletter (MNL). Prior to on-line databases, the MNL&amp;#xd;&amp;#xa;served to systematize available mutant stocks, genetic maps, and addresses for maize&amp;#xd;&amp;#xa;geneticists. In fact, the first phenotypic data entered into MaizeGDB, in 1991, was from&amp;#xd;&amp;#xa;the MNL stock center report. To support renewed, community submission of similar&amp;#xd;&amp;#xa;data, the MNL has initiated a new on-line journal, called the &amp;#x2018;maize gene review&amp;#x2019; (MGR,&amp;#xd;&amp;#xa;www.maizegenereview.org). It represents an extension of the Mutants of Maize (1997),&amp;#xd;&amp;#xa;eds MG Neuffer, EH Coe, SR...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3221/version/1

Through Birds&amp;#x27; Eyes: What does vision tell us about foraging in cormorants?
Provedor de dados: 17
Autores: Graham Martin.
Great Cormorants _Phalacrocorax carbo_ are regarded as visually-guided, pursuit-dive foragers, so it would be expected that they have excellent vision much like aerial predators, such as hawks which detect and pursue prey from a distance.  However, my research shows that underwater the visual acuity of Cormorants is surprisingly poor (in fact, similar or worse than unaided humans under water) and very inferior to that of aerial predatory birds. I suggest that Cormorants are able to detect typical prey items only at close range and conclude that cormorants are not the aquatic equivalent of hawks. It seems that their efficient hunting involves the use of specialised foraging techniques which employ rapid neck extension to capture prey that cormorants flush...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2007
URL: http://precedings.nature.com/documents/1188/version/1

OpenCOR
Provedor de dados: 17
Autores: Alan Garny.
A description of the OpenCOR project. What has been done so far, the choices that were made, etc., as well as the direction in which we are heading.
Tipo: Presentation
Palavras-chave: Molecular Cell Biology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5898/version/1

SBGN PD: Current status, future changes and unresolved issues.
Provedor de dados: 17
Autores: Stuart L. Moodie.
The presentations reports and the current status of the SBGN-PD specification and highlights issues for further discussion.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2012
URL: http://precedings.nature.com/documents/6831/version/1

Copper induced peroxidase, CCPP form Caribbean copper plant
Provedor de dados: 17
Autores: Reetesh Kumar.
Plant peroxidase exhibit broad substrate specificity and is active in a wide range of pH and temperature, and in the presence of organic compounds as well as other additives. The peroxidase is known to be involved in many physiological and regulatory processes in plants. This ppt presents an introduction on plant peroxidase and their applications. A purification protocol has been developed and the purified protein, named as CCPP is biochemically and physiologically characterized. The physiochemical properties such as molecular weight, isoelectric point have been experimentally determined. The enzymatic efficiency has been evaluated through temperature optimum, pH optimum, Km and other enzymatic properties along with spectroscopic parameters like circular...
Tipo: Presentation
Palavras-chave: Biotechnology; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6410/version/1

Argudas: arguing with gene expression information
Provedor de dados: 17
Autores: Kenneth McLeod.
In situ hybridization gene expression information helps biologists identify where a gene is expressed. However, the databases that republish the experimental information are often both incomplete and inconsistent. This presentation examines a system, Argudas, designed to help tackle these issues. Argudas is an evolution of an existing system, and so that system is reviewed as a means of both explaining and justifying the behavior of Argudas. Throughout the discussion of Argudas a number of issues will be raised including the appropriateness of argumentation in biology and the challenges faced when integrating apparently similar online biological databases.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5394/version/1

The CALBC RDF Triple store: retrieval over large literature content
Provedor de dados: 17
Autores: Samuel Croset.
Integration of the scientific literature into a biomedical research infrastructure requires the processing of the literature, identification of the contained named entities (NEs) and concepts, and to represent the content in a standardised way.&amp;#xd;&amp;#xa;The CALBC project partners (PPs) have produced a large-scale annotated biomedical corpus with four different semantic groups through the harmonisation of annotations from automatic text mining solutions (Silver Standard Corpus, SSC). The four semantic groups were chemical entities and drugs (CHED), genes and proteins (PRGE), diseases and disorders (DISO) and species (SPE). The content of the SSC has been fully integrated into RDF Triple Store (4,568,678 triples) and has been aligned with content...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5383/version/1

Integration of the scientific literature into the Semantic Web: Facts from biomedical data resources
Provedor de dados: 17
Autores: Dietrich Rebholz; Samuel Croset; Christoph Grabmueller.
Scientific literature is the primary resource for relevant and innovative information. The integration of the literature with other data resources in the biomedical research community generates overhead that can be avoided through the used of Semantic Web Technology generating openly accessible data. Projects such as SESL and CALBC have producted significant amount of data that that are ready for exploitation.&amp;#xd;&amp;#xa;The tutorial will teach different approaches on how to integrate the scientific literature with the content from biomedical databases, and will discuss the inferences that can be achieved. Furthermore, the tutorial will point to the resources that are ready for use and enable integration of the literature at your discretion. A good...
Tipo: Presentation
Palavras-chave: Biotechnology; Immunology; Bioinformatics; Data Standards.
Ano: 2012
URL: http://precedings.nature.com/documents/7011/version/1

Biological resource catalog: NIF and NeuroLex
Provedor de dados: 17
Autores: Anita E. Bandrowski.
In the digital age one can find data and teaching materials on the web, however data and materials of a high quality are not always ranked very high on commercial search engines that look at the number of other sites that link to a page rather than the quality of the information. Additionally, many such materials are maintained within databases that are inaccessible to search technology. To solve these problems, the Neuroscience Information Framework (NIF: http://www.neuinfo.org) was created to aid the neuroscience community to discover useful digital resources, such as academic databases, and it has also developed a large digital catalog of resources that are related to neuroscience.&amp;#xd;&amp;#xa;NIF has developed a &amp;#x201c;resource...
Tipo: Presentation
Palavras-chave: Neuroscience; Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6238/version/1

Geological Controls on Water Resource Variability in Minnesota, USA
Provedor de dados: 17
Autores: Howard  Mooers; Roman Kanivetsky; John  Nieber; Heidi  Peterson; Carol Johnston; Boris Shmagin.
Sustainable management of water resources requires quantitative description of spatio-temporal variability, and the map is a universal medium to reflect the spatio-temporal distribution of water resources. The long history of cartography and the recent digital revolution have culminated in the Google Earth web portal with unprecedented frequency of daily use. System analysis with combination of a cyber model of landscapes, multidimensional methods of data analysis, and GIS cartography of water resources in Minnesota started in 1996 with support from faculty of Department of Geology University of Minnesota-Duluth and has continued ever since. The &amp;#x201c;Water Resource Sustainability&amp;#x201d; project, funded by the Legislative Citizens Commission on...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3957/version/1

Hematopoietic Cell Types:  Prototype for a Revised Cell Ontology
Provedor de dados: 17
Autores: Alexander D. Diehl; Alison D. Augustine; Judith A. Blake; Lindsay G. Cowell; Elizabeth S. Gold; Timothy A. Gondr&amp;#xe9;-Lewis; Anna Maria Masci; Terrence F. Meehan; Penelope A. Morel; Anastasia Nijnik; Bjoern Peters; Bali Pulendran; Richard H. Scheuermann; Q. Alison Yao; Martin S. Zand; Christopher J. Mungall.
The Cell Ontology (CL) is an OBO Foundry candidate ontology intended for the representation of cell types from all of biology.  A recent workshop sponsored by NIAID on hematopoietic cell types in the CL addressed issues of both the content and structure of the CL.  The section of the ontology dealing with hematopoietic cells was extensively revised, and plans were made for restructuring these cell type terms as cross-products with logical definitions based on relationships to external ontologies, such as the Protein Ontology and the Gene Ontology.  The improvements to the CL in this area represent a paradigm for the future revision of the whole of the CL.
Tipo: Presentation
Palavras-chave: Immunology; Bioinformatics; Data Standards.
Ano: 2009
URL: http://precedings.nature.com/documents/3543/version/2

Exciton Effects in Optical Absorption Spectra of Boron-Nitride Nanotubes
Provedor de dados: 17
Autores: Kikuo Harigaya.
Exciton effects are studied in single-wall boron-nitride (BN) nanotubes. Linear absorption spectra are calculated with changing&amp;#xd;&amp;#xa;the chiral index of the zigzag nanotubes. We consider the extended Hubbard model with atomic energies at the boron and nitrogen sites.&amp;#xd;&amp;#xa;Exciton effects are calculated using the configuration interaction technique. The Coulomb interaction dependence of the band gap,&amp;#xd;&amp;#xa;the lowest exciton energy, and the binding energy of the exciton are discussed. The optical gap of the (5,0) nanotube is about 6 eV&amp;#xd;&amp;#xa;at the onsite interaction U=2t with the hopping integral t=1.1 eV. The binding energy of the exciton is 0.50 eV for these parameters.&amp;#xd;&amp;#xa;This energy agrees...
Tipo: Presentation
Palavras-chave: Chemistry.
Ano: 2009
URL: http://precedings.nature.com/documents/3879/version/1

Towards sustainable fisheries: Assessing co-management effectiveness for the Columbia River Basin
Provedor de dados: 17
Autores: Sibyl W. Diver.
Co-management theory argues that incorporating local knowledge into fisheries science decision-making can lead to more sustainable fisheries through improved fishery dynamics, reduced harvest pressure, and increased regulatory compliance. The Maine lobster fishery, Japanese fishing cooperatives, and Alaska&amp;#x2019;s Community Development Quota Program are all considered successful models of fisheries co-management. Co-management arrangements between Pacific Northwest treaty tribes and state managers were first established in the 1970s, following court decisions upholding the tribes&amp;#x2019; treaty rights to fish. However, the long-term effectiveness of Pacific Northwest salmon fisheries co-management is not fully understood. Here I present an...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3754/version/1

Citizen Science in Disaster and Conflict Resilience
Provedor de dados: 17
Autores: Keith G Tidball; Marianne Krasny.
*Background/Question/Methods*&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Within the disaster and conflict response communities, concern about lack of effectiveness of outside responses has led to a debate about the role of local people in developing the capacity to prepare for a crisis and to respond after calamity has struck.  Pelling (2007) points out the potential for participatory disaster risk assessment to build local capacity and for generating knowledge that, along with more expert-driven data collection, is used to identify and reduce the risk of disaster. Similarly, Weinstein and Tidball (2007) and Tidball et al. (2008) present an alternative model for post-crisis intervention based on local assets, including ongoing attempts of communities to manage...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/5200/version/1

SABIO-RK: Access to Biochemical Reaction Kinetics Data
Provedor de dados: 17
Autores: Martin Golebiewski.
SABIO-RK (http://sabio.h-its.org/) is a curated database for biochemical reaction kinetics data drawn from different sources: from literature or direct submission by experimenters. The system offers standardized data by the use of controlled vocabularies and annotations pointing to other resources and biological ontologies. SABIO-RK can be accessed either manually via a web-based search interface or automatically via web services that allow direct data access by other tools. Both interfaces support the export of the data together with its annotations in SBML (Systems Biology Markup Language) complying with the MIRIAM (Minimal Information Requested In the Annotation of biochemical Models) standard. New RESTful web services, as well as a new browser...
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6506/version/1

Impacts &amp;#x2013; The Key to Understand Earth
Provedor de dados: 17
Autores: Hua Huang.
A significant factor, where are the major elements e.g. Mg, Fe, Si, Al, Ca, P, Ni that make up the asteroid or comet after the impact, has been ignored since the proposal of the impact events. In a striking contrast, there are many remaining unanswered or poorly answered questions regarding the formation and nature of banded iron formation (BIF), iron stone, phosphorite, bedded manganese ore, dolomite and carbonaceous black shales. The appearance of Lake Superior type banded ion formation  associated with dolomite, quartzite, and black shale, the deposition of manganese ore and the occurrence of large phosphate repository during the Plaeoproterozoic; the onset of BIF with phosphate deposition and sedimentary manganese deposits and cap dolomite during the...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/4678/version/1

An OWL-DL Ontology for Classification of Lipids
Provedor de dados: 17
Autores: Hong-Sang Low; Christopher  J. O. Baker; Alexander Garcia; Markus R. Wenk.
Lipids can be systematically classified according to functional properties, structural features, biochemical origin or biological system. However Lipid nomenclature has yet to become a robust research tool since no rigorous definitions exist for membership of specific lipid classes. Lipids need to be defined in a manner that is systematic yet at the same time semantically explicit. We report on the reuse of existing lipid nomenclature, ontology describing chemical structure and the extension of the OWL-DL Lipid Ontology to support the classification of lipid molecules. We applied definitions, DL-axioms, to describe lipids classes and illustrate suitability of the ontology for the classification of Fatty Acyl lipids and Mycolic acids.
Tipo: Presentation
Palavras-chave: Chemistry; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3590/version/1

Open Notebook Science: Perspectives from a newbie
Provedor de dados: 17
Autores: Cameron Neylon.
My group is using an electronic lab notebook based on a Blog format that is being developed in collaboration with the group of Professor Jeremy Frey. Here I discuss how this led to the adoption of an open notebook science approach in my group as well as some of the consequences, both positive and negative, of adopting such an approach.
Tipo: Presentation
Palavras-chave: Biotechnology.
Ano: 2007
URL: http://precedings.nature.com/documents/1130/version/1

Expert Assertions Through Community Annotation Jamborees
Provedor de dados: 17
Autores: Lauren Brinkac; Ramana Madupu; Elisabet Caler; Derek Harkins; Hernan Lorenzi; Mathangi Thiagarajan; Granger Sutton.
Although there is significant optimism that community involvement can drive genome curation, results to date are disappointing. The Human Genome and Saccharomyces Genome Databases both tried community annotation experiments and few community contributions were obtained. JCVI&amp;#x2019;s own early experiences with community curation were also largely unsuccessful. Although community curation tools were publicly available on JCVI web resources and much effort was made by JCVI personnel to advertise these resources, little curation was actually submitted. Starting in late 2007, JCVI&amp;#x2019;s model for community curation changed. Instead of simply providing curation tools on websites and advertising their utility at meetings and conferences, JCVI...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3170/version/1

Genetic differentiation of wild and managed _Coffea arabica_ populations in Afromontane rainforest fragments in SW Ethiopia
Provedor de dados: 17
Autores: Raf Aerts; Gezahegn Berecha; Pieter Gijbels; Sabine Van Glabeke; Katrien Vandepitte; Bart Muys; Isabel Rold&amp;#xe1;n-Ruiz; Olivier Honnay.
*1.*  _Coffea arabica_ L. has its origin and centre of diversity in the Afromontane rainforests of southwestern Ethiopia.  Deforestation, habitat fragmentation and forest degradation threaten this wild coffee gene pool, which is vital to global coffee cultivation.&amp;#xd;&amp;#xa;*2.*  We investigated genetic variation and diversity within and between eleven coffee stands across a gradient of increasing forest management intensity (&amp;#x2018;forest coffee&amp;#x2019;, unmanaged large continuous forest vs. &amp;#x2018;semi-forest coffee&amp;#x2019;, managed, small fragments) using two multiplex panels of five microsatellite markers each.  We used analysis of molecular variance (AMOVA) to partition total genetic diversity and applied a Bayesian...
Tipo: Presentation
Palavras-chave: Ecology; Genetics &amp; Genomics; Earth &amp; Environment; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5870/version/1

Developments in CFG glycan and pathogen polysaccharide arrays
Provedor de dados: 17
Autores: Ola Blixt.
This presentation summarizes developments in glycan and pathogen polysaccharide arrays at the Consortium for Functional Glycomics (CFG).
Tipo: Presentation
Palavras-chave: Chemistry; Molecular Cell Biology; Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/12/version/1

Building conceptual spaces for exploring and linking biomedical resources
Provedor de dados: 17
Autores: Rafael Berlanga; Voctoria Nebot; Ernesto Jimenez-Ruiz.
The establishment of links between data (e.g., patient records) and Web resources (e.g., literature) and the proper visualization of such discovered knowledge is still a challenge in most Life Science domains (e.g., biomedicine). In this paper we present our contribution to the community in the form of an infrastructure to annotate information resources, to discover relationships among them, and to represent and visualize the new discovered knowledge. Furthermore, we have also implemented a Web-based prototype tool which integrates the proposed infrastructure.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5381/version/1

A Novel NIR Spectroscopy Correlation Approach to Amino Acid Analysis of Soybean Proteins for  Composition Improvements-  (v.4)
Provedor de dados: 17
Autores: Valentin  Prisecaru; I. C. Baianu.
Amino acid NIR calibrations were developed in our Physical Chemistry of Foods Laboratory of the University of Illinois at Urbana for three selected amino acid groups that include essential amino acids for identified soybean accessions.  Conventional &amp;#x201c;wet chemistry&amp;#x201d; analytical methods are time-consuming and costly.  As a result, soybean breeders and researchers have an imperative need to utilize faster and less expensive methods. NIR Spectroscopy is a rapid and inexpensive method for composition analysis for academia and industry.  Recent advancements in instrumentation design, such as the application of the Diode Array (DA) technique and the Fourier Transform (FT) IR and NIR techniques, have significantly improved overall instrument...
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Developmental Biology; Genetics &amp; Genomics; Immunology; Molecular Cell Biology; Bioinformatics; Earth &amp; Environment; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6231/version/4

Constructing ABC summary statistics: semi-automatic ABC
Provedor de dados: 17
Autores: Paul Fearnhead; Dennis  Prangle.
To analyze complex datasets efficiently, ABC algorithms require well-chosen low dimensional summary statistics of the data. We present a method to construct appropriate summary statistics for ABC in a semi-automatic manner. Previous attempts at this have been based around constructing statistics that are sufficient (or approximately sufficient). However, in most real applications it is difficult to know if low-dimensional sufficient statistics exist, or how to approximate them if they do. We take an alternative approach of aiming for summary statistics which will enable inference about certain parameters of interest to be as accurate as possible. &amp;#xa0;This talk describes our method, the underpinning theory, and promising empirical results on a range...
Tipo: Presentation
Palavras-chave: Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5959/version/1

Some Concepts of Graph Theory
Provedor de dados: 17
Autores: Malay Bhattacharyya.
We present some preliminary concepts of graph theory with interesting and easy examples.
Tipo: Presentation
Palavras-chave: Data Standards.
Ano: 2012
URL: http://precedings.nature.com/documents/7120/version/1

CellML 1.1 modularity
Provedor de dados: 17
Autores: Poul Nielsen.
CellML 1.1 is an open XML-based language designed  to store and exchange computer-based mathematical models. It has a simple facility to import existing models in order to create new models. The import facility encourages the development of hierarchical models and model reuse through the creation of well-curated model components in public model repositories. This presentation describes some of the features of CellML 1.1 and best practices for taking advantage of these features.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5005/version/1

Near Infrared Reflectance Spectroscopy (NIRS) Determination of Isoflavone Contents for Selected Soybean Accessions
Provedor de dados: 17
Autores: I. C. Baianu; Jun  Guo; Tiefeng  You; Randall   L. Nelson.
Soybean isoflavones are of considerable interest in relation to their possible health effects in human diets. The rapid and economical determination of soybean isoflavone concentrations is essential for the investigation and development of soybean health foods as well as the selection of soybean seeds with optimal isoflavone levels for such foods. Fourier transforms near infrared reflectance spectroscopy (FT-NIRS) calibrations were developed for the rapid and cost-effective analysis of isoflavones in soybean seeds. FT-NIRS measurements were carried out in quadruplicate for 50 soybean lines selected from the USDA Soybean Germplasm Collection. The selected soybean seeds provided a wide range of isoflavone concentrations (from 0.3 to 6.0 mg/g) that is...
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Genetics &amp; Genomics; Molecular Cell Biology; Plant Biology; Data Standards.
Ano: 2012
URL: http://precedings.nature.com/documents/7048/version/1

User Centered and Ontology Based Information&amp;#xb;Retrieval System for Life Sciences
Provedor de dados: 17
Autores: Sylvie Ranwez; Vincent  Ranwez; Mohameth Fran&amp;#xe7;ois Sy; Jacky  Montmain; Michel  Crampes.
Because of the increasing number of electronic data, designing efficient tools to retrieve and exploit documents is a major challenge. Current search engines suffer from two main drawbacks: there is limited interaction with the list of retrieved documents and no explanation for their adequacy to the query. Users may thus be confused by the selection and have no idea how to adapt their query so that the results match their expectations. &amp;#xd;&amp;#xa;This talk describes a request method and an environment based on aggregating models to assess the relevance of documents annotated by concepts of ontology. The selection of documents is then displayed in a semantic map to provide graphical indications that make explicit to what extent they match the...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5408/version/1

Five years of winter climate change-related research in the Canadian low Arctic: What have we learned?
Provedor de dados: 17
Autores: Paul Grogan; Kate Buckeridge.
The importance of the fall, winter and spring periods to ecosystem functioning and biogeochemical cycling in tundra has only become apparent in the past two decades.  Our research group has been conducting winter climate change-related studies at a low arctic tundra site near Daring Lake, north of Yellowknife in northern Canada for the past five years.  Most of these studies have focused on the biogeochemical interactions between plants, soils, and soil microbes during fall, winter and spring, and on their responses to experimentally deepened snow.  In addition, we have measured trace gas production and isotopic nitrogen tracer distributions among plant and soil components in several vegetation-types.  The central goal has been to understand the potential...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3665/version/1

The hotspot conversion paradox
Provedor de dados: 17
Autores: Mario Pineda-Krch; Rosemary J. Redfield.
The contradiction between the long-term persistence of the chromosomal hotspots that initiate meiotic recombination and the self-destructive mechanism by which they act strongly suggests that our understanding of recombination is incomplete. This &amp;#x22;hotspot paradox&amp;#x22; has been reinforced by the finding that biased gene conversion also removes active hotspots from human sperm. To investigate the requirements for hotspot persistence, we developed a detailed computer simulation model of their activity and its evolutionary consequences. With this model, unopposed hotspot activity could drive strong hotspots from 50% representation to extinction within 70 generations. Although the crossing over that hotspots cause can increase population fitness,...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Evolutionary Biology.
Ano: 2009
URL: http://precedings.nature.com/documents/3637/version/1

The CombiUgi Project and Closing the Open Science Loop
Provedor de dados: 17
Autores: Jean-Claude Bradley; Rikesh Parikh; Dan Zaharevitz; Rajarshi Guha.
This presentation combines 2 blog posts explaining the CombiUgi project and the predicted anti-tumor activity of a virtual library of 68,000 compounds.
Tipo: Presentation
Palavras-chave: Cancer; Chemistry; Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/104/version/1

Evolutionary trade-offs among decomposers may constrain responses to nitrogen
Provedor de dados: 17
Autores: Kathleen Treseder; Stephanie Kivlin; Christine Hawkes.
We tested the extent to which evolutionary trade-offs among species traits might constrain the responses of different functional groups of decomposers to global change. Specifically, we hypothesized that bacteria targeting large recalcitrant compounds require relatively high levels of nitrogen (N) availability to support the construction costs of requisite extracellular and carrier enzymes. Conversely, bacteria adapted to N-poor environments may invest scarce resources in enzymes targeting organic N instead of recalcitrant carbon. We cross-referenced carbon substrate use profiles (from Biolog plates), functional genes from published bacterial genomes, the global ocean sampling (GOS) expedition, and a global synthesis of environmental DNA sequences of...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/5205/version/1

Assisting natural forest regeneration in Northern Ethiopia: one intervention is not enough
Provedor de dados: 17
Autores: Raf Aerts; Eva November; Martin Hermy; Jozef Deckers; Mitiku Haile; Bart Muys.
Management strategies aimed at rehabilitating degraded and cleared forests often rely on temporary or permanent exclusion of herbivores (wild animals, livestock or both).  But in many cases, this simple management technique is not sufficient to induce ecosystem restoration: many negative effects keep the ecosystem in a suboptimal, low biomass state.  The presence of such stable states requires restoration measures to act on multiple stress factors simultaneously.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Compensating for all limiting factors is neither practically nor economically feasible.  But detailed knowledge about the autoecology of tree species &amp;#x2013; i.e. their site requirements, regeneration strategies and recruitment dynamics &amp;#x2013; may be...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/2437/version/2

Novel NIR Spectroscopy Correlation Approach to Amino Acid Analysis of Soybean Proteins for  Composition Improvements
Provedor de dados: 17
Autores: I. C. Baianu; Valentin  Prisecaru.
Amino acid NIR calibrations were developed in our Physical Chemistry of Foods Laboratory of the University of Illinois at Urbana for three selected amino acid groups that include essential amino acids for identified soybean accessions.  Conventional &amp;#x201c;wet chemistry&amp;#x201d; analytical methods are time-consuming and costly.  As a result, soybean breeders and researchers have an imperative need to utilize faster and less expensive methods. NIR Spectroscopy is a rapid and inexpensive method for composition analysis for academia and industry.  Recent advancements in instrumentation design, such as the application of the Diode Array (DA) technique and the Fourier Transform (FT) IR and NIR techniques, have significantly improved overall instrument...
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Genetics &amp; Genomics; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6231/version/1

Quantitative detection of _Potato virus Y_ in potato plants and aphids - Discussion of diverse applications in potato research
Provedor de dados: 17
Autores: Anja H&amp;#xfc;hnlein; J&amp;#xf6;rg Schubert; Thomas Thieme; Edgar Schliephake.
Every year potato growers worldwide complain about severe yield losses caused by _Potato virus Y_ (PVY). Therefore, PVY along with _Potato leafroll virus_ belongs to the most important potato viruses. There are three main strains of PVY: PVY^O^, PVY^N^ and PVY^C^. However, also recombinant forms exist such as PVY^N^Wilga and PVY^NTN^, both of which increase in importance due to their potential to displace the non-recombinant strains at a high percentage. They appear also in mixed infections. In recent years PCR and qPCR assays were developed to differentiate PVY isolates. In order to identify PVY isolates by PCR often large amplicons have to be generated which requires the input of expensive enzymes. On the other hand, qPCR assays until now do not allow...
Tipo: Presentation
Palavras-chave: Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5734/version/1

Biomedical Resource Ontology
Provedor de dados: 17
Autores: Trish  Whetzel.
none
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6354/version/1

SBML Editor&amp;#x2019;s Report: Principles for Package Development
Provedor de dados: 17
Autores: Lucian Smith.
In the last six months, the SBML Editors have developed several principles to guide the development of SBML Level 3 packages.  An update on what those principles are, and some controversies that have arisen as a result.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6403/version/1

Kinetic Simulation Algorithm Ontology
Provedor de dados: 17
Autores: Anna Zhukova; Dagmar Waltemath; Nick Juty; Camille Laibe; Nicolas Le Nov&amp;#xe8;re.
To enable the accurate and repeatable execution of a computational simulation task, it is important to identify both the algorithm used and the initial setup. These minimum information requirements are described by the MIASE guidelines. Since the details of some algorithms are not always publicly available, and many are implemented only in a limited number of simulation tools, it is crucial to identify alternative algorithms with similar characteristics that may be used to provide comparable results in an equivalent simulation experiment. The Kinetic Simulation Algorithm Ontology (KiSAO) was developed to address this issue by describing existing algorithms and their inter-relationships through their characteristics and parameters. The use of KiSAO in...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6330/version/1

Direct fluorophore conjugation to genomic DNA for microarray-based epigenomic profiling
Provedor de dados: 17
Autores: Vineet Gupta.
A methodology for microarray based epigenomic profiling is presented. The method relies on platinum-based fluorescence labeling reagents for direct (non-enzymatic) labeling of DNA and RNA. This is a work in progress and only preliminary data is presented here.
Tipo: Presentation
Palavras-chave: Biotechnology; Cancer; Chemistry; Molecular Cell Biology.
Ano: 2007
URL: http://precedings.nature.com/documents/444/version/1

Incorporating Community Annotation Interfaces into the CIPRO2.5 Database with Comprehensible Sketches to Support Quick Annotations of Proteome Data.
Provedor de dados: 17
Autores: Keisuke Ueno; Kouki Yonezawa; Katsuhiko Mineta; Toshinori Endo.
User annotation or comment interfaces are now widely used in several web sites such as journals, news, weblogs and Wikipedia. However, there are only a few biological databases with annotation interfaces. The _Ciona_ _intestinalis_ protein database (CIPRO) was created in order to provide integrated proteome data especially for experimental biologists. The current database contains 89,673 unique sequences covering all the known and predicted gene models. Typical tasks include which gene models are reliable and which function is plausible. The human-curated annotation is most important for the meaningful database.&amp;#xd;&amp;#xa;Here we incorporate three new functions into the CIPRO2.5 database (http://cipro.ibio.jp/2.5/), providing enriched resources for...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5064/version/1

Online Training of New Curators
Provedor de dados: 17
Autores: Marc E. Gillespie; Bijay Jassal.
The basic information in Reactome is provided by bench biologists who are experts on a particular pathway, the Reactome Team is always working hard to drive engagement. This engagement between experts, curators, editors and reviewers requires maintenance and improvement, and in this sense Reactome is itself a model for large biocuration projects that are driven by community engagement.  &amp;#xd;&amp;#xa; &amp;#xd;&amp;#xa;This tutorial will highlight issues from the perspective of online training participants, the trainer&amp;#x27;s and the audience&amp;#x27;s. From the audience perspective the tutorial will introduce the concepts that drive the Reactome data model, cover the basic steps that a researcher would have to follow in order to breakdown a...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3420/version/1

Benchmarking triple stores with biological data
Provedor de dados: 17
Autores: Vladimir Mironov.
We have compared the performance of five non-commercial triple stores, Virtuoso-open source, Jena SDB, Jena TDB, SWIFT-OWLIM and 4Store. We examined three performance aspects: the query execution time, scalability and run-to-run reproducibility. The queries we chose addressed different ontological or biological topics, and we obtained evidence that individual store performance was quite query specific. We identified three groups of queries displaying similar behavior across the different stores: 1) relatively short response time, 2) moderate response time and 3) relatively long response time. OWLIM proved to be a winner in the first group, 4Store in the second, and Virtuoso in the third. Our benchmarking showed Virtuoso to be a very balanced performer...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5417/version/1

Surprisingly rapid nitrogen cycling in tropical forest plantations on volcanically derived soils
Provedor de dados: 17
Autores: James Raich; Ann Russell.
Secondary forests and young forest plantations frequently have high rates of tree growth and NPP &amp;#x2013; higher even than mature forests in similar situations. The nutrients required to sustain this rapid growth are derived from the soil and by external inputs such as rainfall or, in the case of nitrogen, by biological N fixation. In our study of the effects of tree species within replicated experimental plantations in a moist, lowland tropical environment in Costa Rica, high rates of biomass accumulation and productivity were coupled with high rates of N accumulation and cycling. We applied extensive sampling through time within a mass-balance approach to address the question &amp;#x201c;Where does all the nitrogen come...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2010
URL: http://precedings.nature.com/documents/5346/version/1

Management and provision of computational models
Provedor de dados: 17
Autores: Camille Laibe.
Quantitative models of biological systems provide an understanding of chemical and biological phenomena based on their underlying mechanisms. Moreover, they can be used for example, to predict the behaviour of a system under given conditions or direct future experiments. This has made quantitative models the perfect tools to answer a variety of questions in the biological sciences and has lead to a steady growth of the number of published models.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To maximise the benefits of this growing body of models, the field needs centralised model repositories that will encourage, facilitate and promote model dissemination and reuse. BioModels Database(http://www.ebi.ac.uk/biomodels/) has been developed to exactly fulfil those needs....
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2012
URL: http://precedings.nature.com/documents/7013/version/1

Climate Change and Disease Simulation
Provedor de dados: 17
Autores: Somnath Jha.
Climate change has manifested differential impacts on various components of the earth system. The impact of climate change is not merely limited to the climatic variable. Climate change has resulted in complex, unforeseen consequences in the biosphere of earth. The silent but gradual changes arise out of varied responses of disease-causing organism to the combination of the disease-conducive environmental variables. The change is the same for both the target hosts plant as well as the animal kingdom. There is an urgent need to look into the changing disease dynamics and the disease pathogen genome sensitivity to the changes in climatic variables. The long memory of genetic makeup of disease pathogen to capture, inherit and evolve or mutate the changed or...
Tipo: Presentation
Palavras-chave: Ecology; Genetics &amp; Genomics; Earth &amp; Environment; Evolutionary Biology.
Ano: 2012
URL: http://precedings.nature.com/documents/6949/version/1

MIREOT: the Minimum Information to Reference an External Ontology Term
Provedor de dados: 17
Autores: M&amp;#xe9;lanie Courtot; Frank Gibson; Allyson L. Lister; James Malone; Daniel Schober; Ryan R. Brinkman; Alan Ruttenberg.
While the Web Ontology Language (OWL) provides a mechanism to import ontologies, this mechanism is not always suitable. First, given the current state of editing tools and the issues they have working with large ontologies, direct OWL imports have sometimes proven impractical for day-to-day development. Second, ontologies chosen for integration may be under active development and not aligned with the chosen design principles. Importing heterogeneous ontologies in their entirety may lead to inconsistencies or unintended inferences. In this paper we propose a set of guidelines for importing required terms from an external resource into a target ontology. We describe the guidelines, their implementation, present some examples of application, and outline...
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3576/version/1

Hacking the JPEG/PDF tree format
Provedor de dados: 17
Autores: Joseph Hughes.
We have been illustrating the relationships between species and genes as trees for over a century. Whilst in the early years of morphological and molecular phylogenetics, embedding illustrations into manuscripts might have been the most appropriate way to disseminate knowledge, this has resulted in the locking up of phylogenetic hypotheses into the pages of journals and books without an easy way to access this information. As a result, most phylogenetic knowledge is lost upon publication. I will explain the reasons for re-using published trees, discuss ways to liberate this information and avoid these problems in the future.
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6556/version/1

The Issue of Uncertainty for the River Watershed: Data Analysis of Scaled Space and Time Variability
Provedor de dados: 17
Autores: Boris A. Shmagin.
The issue of uncertainty is the basis for any application of knowledge (&amp;#x22;Uncertainty is an attribute of information.&amp;#x22; From L. Zadeh, 2005) and has to be one of the main tasks in Earth&amp;#x27;s systems study. Knowledge about natural systems may be only obtained by the analysis of the empirical (instrumental) data. Uncertainty starts from unveiling of the research task by the researcher. The main source of uncertainty comes from the natural system &amp;#x22;extraction&amp;#x22; (unit&amp;#x27;s boundaries) for modeling and limitations of data representing both time and space variability. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The consideration of uncertainty is placed in context of time and space with use of the U.S. part of the Great Lakes...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/6008/version/1

Determination of Isoflavone Contents for Selected Soybean Lines and Soy Foods by  Fourier Transform Near Infrared Reflectance Spectroscopy
Provedor de dados: 17
Autores: I. C. Baianu; Tiefeng You; Randall L. Nelson.
Soybean isoflavones are of considerable interest in relation to their possible health effects in human diets. Rapid and economical determination of soybean isoflavone contents is essential for breeding and selection of soybean seeds with optimal isoflavone levels for food applications. Fourier Transform Near Infrared Spectroscopy (FT-NIR) calibrations were developed for rapid and reliable analysis of soybean isoflavone content. Our isoflavone calibrations are characterized by low standard errors (&amp;#x3c;0.02%) and high degrees of correlation (&amp;#x3e;99%).
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Genetics &amp; Genomics; Immunology; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6194/version/1

jlibSEDML - a Java library for working with SED-ML
Provedor de dados: 17
Autores: Richard Adams; Ion Moraru; Anuradha Lakshminaryana.
jlibSEDML is an open-source  Java library to support the emerging SED-ML standard to record the operations needed to run simulations and other operations on biochemical models. It is compatible with level 1 version 1 of the specification and is available from http://sourceforge.net/projects/jlibsedml
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/4965/version/1

The Gloomy Prospect Wins: Statistical Significance and Population Stratification in Genome Wide Association Studies
Provedor de dados: 17
Autores: Eric Turkheimer.
This one-hour lecture by Dr. Eric Turkheimer of  the University of Virginia&amp;#x27;s Department of Psychology explored the following:&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The contemporary era has seen a convergence of genomic technology and traditional social scientific concerns with complex human individual differences. Rather than finally turning social science into a replicable hard-scientific enterprise, genomics has gotten bogged down in the long-standing frustrations of social science. A recent report of an extensive genome wide association study of human height demonstrates the profound difficulties of explaining uncontrolled human variation at a genomic level. The statistical technologies that have been brought to bear on the problem of genomic...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2642/version/1

Identifiers.org and MIRIAM Registry: perennial identifiers for crossreferencing purposes
Provedor de dados: 17
Autores: Camille Laibe.
The MIRIAM Registry provides unique, perennial and location independent identifiers for data used in the biomedical domain. At its core is a shared catalogue of data collections, for each of which a unique namespace is created, and extensive metadata recorded. This namespace allows the generation of Uniform Resource Identifiers (URIs) to uniquely identify any record in a collection. We present here the new Identifiers.org service which is built upon the information stored in the Registry and which provides directly resolvable identifiers, in the form of Uniform Resource Locators (URLs). The flexibility of the identification scheme and resolving system allows its use in many different fields, where unambiguous and perennial identification of data entities...
Tipo: Presentation
Palavras-chave: Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6479/version/1

JSBML
Provedor de dados: 17
Autores: Nicolas Rodriguez; Andreas Dr&amp;#xe4;ger.
The XML-based Systems Biology Markup Language (SBML) is the de facto standard file format for the storage and exchange of biochemical network models, and is supported by more than 180 software packages to date. Much of this success is due to SBML&amp;#x27;s clearly defined specifications and the availability of libSBML, a portable, robust and easy-to-use&amp;#xd;&amp;#xa;library.&amp;#xd;&amp;#xa; &amp;#xd;&amp;#xa;LibSBML provides many methods for manipulating and validating SBML files through its Application Programming Interface (API). Originally written in C and C++, libSBML also provides automatically-generated language bindings for Java, MATLAB, Perl, Python, and many more. However, the platform independence of Java is compromised in libSBML due to...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/4986/version/1

Fracture Toughness of Human Solid Cancers
Provedor de dados: 17
Autores: Nagesh Ragavendra; William Klug; J Woody  Ju.
Human solid cancers typically are harder and firmer than surrounding normal tissue upon clinical palpation. This characteristic has been linked to the presence of abundant collagen in the tumor stroma, referred to as the desmoplastic reaction. Recent evidence indicates that tumor-associated desmoplastic stroma is critical to cancer&amp;#x2019;s growth and progression. However, how best to measure, interpret, and/or model the mechanical attributes of tumor microenvironment in vivo remain unclear. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;During routine sonographically-guided fine needle biopsy of solid tumors of the human thyroid gland, it was serendipitously observed by the lead author that the nature and strength of the haptic force feedback cues varied among...
Tipo: Presentation
Palavras-chave: Biotechnology; Cancer.
Ano: 2008
URL: http://precedings.nature.com/documents/2461/version/1

The Systems Biology Markup Language (SBML) Level 2 Version 2
Provedor de dados: 17
Autores: Michael Hucka; Sarah M. Keating.
The Systems Biology Markup Language (SBML) is a machine-readable model representation language for software tools in computational systems biology. By supporting SBML as an input/output format, different tools can all operate on an identical representation of a model, removing opportunities for translation errors and assuring a common starting point for analyses and simulations. SBML is by no means a perfect format, but it has achieved widespread acceptance as a de facto standard. It is supported worldwide by over 100 software systems (both open-source and commercial). The broad acceptance of a common, open format for exchanging models between software tools is a crucial step towards wider use of quantitative modeling in biology, because it allows...
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/19/version/1

General updates about SBML and SBML Team activities
Provedor de dados: 17
Autores: Michael Hucka.
In this presentation, I summarize very briefly some recent updates to SBML.org, SBML development, and software from the SBML Team.
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6345/version/1

Limits to the detection of early warning signals of population collapse
Provedor de dados: 17
Autores: Carl Boettiger; Alan Hastings.
Background/Question/Methods&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The recog&amp;#xad;ni&amp;#xad;tion that ecosys&amp;#xad;tems can undergo sud&amp;#xad;den shifts to alter&amp;#xad;nate, less desir&amp;#xad;able sta&amp;#xad;ble states has led to the desire to iden&amp;#xad;tify early warn&amp;#xad;ing signs of these impend&amp;#xad;ing col&amp;#xad;lapses.  This search has been moti&amp;#xad;vated by the math&amp;#xad;e&amp;#xad;mat&amp;#xad;ics of bifur&amp;#xad;ca&amp;#xad;tions, in which sud&amp;#xad;den shifts result not from direct per&amp;#xad;tur&amp;#xad;ba&amp;#xad;tions to the state (i.e. the pop&amp;#xad;u&amp;#xad;la&amp;#xad;tion abun&amp;#xad;dance, through mech&amp;#xad;a&amp;#xad;nisms such as over-harvesting)  but to a slowly...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2012
URL: http://precedings.nature.com/documents/6857/version/1

The Undertheorized Environment: Sociological Insights for Behavioral Genetics
Provedor de dados: 17
Autores: Andrew Perrin.
Dr. Andrew Perrin discussed the ontological claims and social theory which run beneath ideas of genetic causation of behavioral traits.  He outlined five criteria for evaluating and conceptualizing the environment within genetic studies. He concluded by emphasizing complexity and describing gene-environment interaction chains.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch Dr. Perrin&amp;#x2019;s presentation, please see the Panel 2 &amp;#x201c;Google Video posting.&amp;#x201d;:http://video.google.com/videoplay?docid=-8804321603731619003&amp;#x26;hl=en
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2654/version/1

Using combined XRD-XRF analysis to identify meteorite ablation debris
Provedor de dados: 17
Autores: Saheeb Kayani.
In this research paper, X-ray diffraction (XRD) and X-ray fluorescence (XRF) spectrometry has been used to determine the mineralogical and elemental composition of a stone sample recovered from a location near village Lehri in district Jhelum, Pakistan. The test data is compared with previous findings (as reported in literature and included in references) to identify this sample stone as part of a meteorite ablation debris.
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/4866/version/1

Constraint-Guided Workflow Composition Based on the EDAM Ontology
Provedor de dados: 17
Autores: Anna-Lena Lamprecht; Stefan Naujokat; Bernhard Steffen; Tiziana Margaria.
Methods for the automatic composition of services into executable workflows need detailed knowledge about the application domain, in particular about the available services and their behavior in terms of input/output data descriptions. In this paper we discuss how the EMBRACE data and methods ontology (EDAM) can be used as background knowledge for the composition of bioinformatics workflows. We show by means of a small example domain that the EDAM knowledge facilitates finding possible workflows, but that additional knowledge is required to guide the search towards actually adequate solutions. We illustrate how the ability to flexibly formulate domain-specific and problem-specific constraints supports the workflow development process.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5397/version/1

Missouri River Watershed: the Object for Hydrological Study and Uncertainty of Models
Provedor de dados: 17
Autores: Boris Shmagin.
The longest river (2540 mi) and the second drainage area (529 346 mi2) in the North America the Missouri River is one from the most interesting hydrological objects to study. The issue of uncertainty is the basis for any application of knowledge (&amp;#x201c;Uncertainty is an attribute of information.&amp;#x201d; From Zadeh, 2005) and has to be one of the main tasks in Earth&amp;#x2019;s systems study. Knowledge about natural systems (watershed in our case) may be only obtained by the analysis of the empirical (instrumental) data (observations). Principle of Uncertainty is the basic low in Physic. In Hydrology, the Uncertainty starts from the unveiling of the research task by the researcher. The main source of the uncertainty comes from the natural system...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2011
URL: http://precedings.nature.com/documents/6537/version/1

Plant Impacts on Competition Between Tidal Marsh Microbes
Provedor de dados: 17
Autores: Ariana Sutton-Grier; Allyson Bullock; Jason Keller; Cindy Gilmour; Pat Megonigal.
*Background/Question/Methods* &amp;#xd;&amp;#xa;Wetlands can store a lot of carbon in soils, but wetland microbial respiration also releases a great deal of carbon dioxide (CO~2~) and methane (CH~4~). These gases combined are responsible for ~80% of the radiative climate forcing.  Understanding the controls on microbial respiration and the importance of different metabolic pathways has important climate change implications. Plants affect microbial respiration in wetlands by impacting the available soil carbon pool and the redoximorphic conditions of the soil environment. These plant impacts in turn affect microbial competition. In this study we were particularly interested in determining the role of soil carbon quality versus environmental factors in...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3630/version/1

CellML + [CMISS | OpenCMISS]
Provedor de dados: 17
Autores: David P. Nickerson.
A brief introduction and comparison to the usage of CellML models in CMISS and OpenCMISS.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/5896/version/1

FieldML &amp;#x2013; a meta-language for field interchange
Provedor de dados: 17
Autores: Richard Christie; Poul M. F. Nielsen; Chris P. Bradley; Caton Little; Randall Britten; Peter J. Hunter.
FieldML is being developed as an XML standard for communicating computational field descriptions and data. Important principles in its design include building models from as few and as fundamental a set of concepts as necessary, supporting maximum reuse, and allowing the functional derivation of fields to be of unlimited complexity.&amp;#xd;&amp;#xa;This talk introduces concepts from the FieldML data model (at version 0.3), and demonstrates how they combine to describe rich field representations.
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/5901/version/1

LipidMaps Core Update
Provedor de dados: 17
Autores: Shankar Subramaniam; Eoin Fahy.
LipidMaps (http://www.lipidmaps.org) is a multidisciplinary project involving multiple institutions. The goal of this project is to identify lipid metabolites and reconstruct pathways associated with lipids in mammalian cells using quantitative measurements of lipids in macrophage cells.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/23/version/1

Determination of adsorptive and diffusive properties of carbon dioxide - methane - water in coal-like structures using molecular simulations
Provedor de dados: 17
Autores: Alaaeldin Salih; Erich A. M&amp;#xfc;ller.
This work employs molecular modeling to simulate both the equilibrium and kinetic behavior pertaining adsorption/desorption and permeation of carbon dioxide within the enhanced coal bed methane (ECBM) process and the corresponding CO~2~ sequestration processes in deep coal mines. The coal structure is modeled on the basis of a carbon, nanotubes, slit pores and more realistic &amp;#x201c;virtual&amp;#x201d; carbons. (from bottom up in the figure) The grand canonical Monte Carlo method is used to simulate the adsorption isotherms and isosteric heats of adsorption of the methane-carbon dioxide-water ternary mixture into the carbon structure, while Molecular Dynamics is applied to the same systems to study the competitive diffusion properties of these fluids...
Tipo: Presentation
Palavras-chave: Chemistry; Earth &amp; Environment.
Ano: 2008
URL: http://precedings.nature.com/documents/2625/version/1

Generating Homology Relationships by Alignment of Anatomical Ontologies
Provedor de dados: 17
Autores: Frederic Bastian; Gilles Parmentier; Marc Robinson-Rechavi.
The anatomy of model species is described in ontologies, which are used to standardize the annotations of experimental data, such as gene expression patterns. To compare such data between species, we aim to establish homology relations between ontologies describing different species. We present a new algorithm, and its implementation in the software Homolonto, to create new relationships between anatomical ontologies, based on the homology concept. These relationships and the Homolonto software are available at &amp;#x22;http://bgee.unil.ch/&amp;#x22;:http://bgee.unil.ch/
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3546/version/1

Biochemical Composition of Normal Urine
Provedor de dados: 17
Autores: Atif  Baig.
The urine composition defines the quality of homeostasis of the body. Learning about the normal urine composition is very important to compare it with the suspended and non suspended particles in urine in different pathologies.
Tipo: Presentation
Palavras-chave: Chemistry.
Ano: 2011
URL: http://precedings.nature.com/documents/6595/version/1

Quantitative detection of cereal geminiviruses
Provedor de dados: 17
Autores: Nadine Drechsler; Antje  Habeku&amp;#xdf;; Thomas Thieme; J&amp;#xf6;rg Schubert.
The Geminiviruses _Wheat dwarf virus_ (WDV) and _Barley dwarf virus_ (BDV) cause symptoms such as dwarfing, stunting and yellowing in infected cereals and can lead to reduced yield and even death of the plant. Both viruses are transmitted by the leafhopper _Psammotettix alienus_ Dahlb. in a persistent  non propagative manner. WDV is reported in Germany since the early 1990s. In the future an increase of infections is predicted due to global warming which leads to prolonged active periods of the vector in autumn. Furthermore infected plants can hibernate and serve as source of infection in spring.   &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;For the first time quantitative PCR assays were developed which allow the sensitive detection and quantification of WDV and...
Tipo: Presentation
Palavras-chave: Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5735/version/1

Data sharing: What about epidemiological cohorts?
Provedor de dados: 17
Autores: Marcel Goldberg; Marie Zins.
General-purpose population-based cohorts can be powerful scientific platforms. The Gazel Cohort Study, a French cohort of 20,000 adults followed-up since more than 20 years, was designed as an open epidemiologic laboratory, hosting more than 40 nested research projects from French and international teams.&amp;#xd;&amp;#xa;Formal rules were elaborated to define the way that the Gazel database can be accessed.&amp;#xd;&amp;#xa;One of the main problems faced by the Gazel team members is scientific recognition of their work, as the large majority of the publications come from external research groups.
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Earth &amp; Environment; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/5575/version/1

Using Ontology Fingerprints to Evaluate Genome-wide Association Results
Provedor de dados: 17
Autores: Lam Tsoi; Michael Boehnke; Richard Klein; Jim Zheng.
We describe an approach to characterize genes or phenotypes via ontology fingerprints which are composed of Gene Ontology (GO) terms overrepresented among those PubMed abstracts linked to the genes or phenotypes. We then quantify the biological relevance between genes and phenotypes by comparing their ontology fingerprints to calculate a similarity score. We validated this approach by correctly identifying genes belong to their biological pathways with high accuracy, and applied this approach to evaluate GWA study by ranking genes associated with the lipid concentrations in plasma as well as to prioritize genes within linkage disequilibrium (LD) block.  We found that the genes with highest scores were: ABCA1, LPL, and CETP for HDL; LDLR, APOE and APOB for...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3513/version/1

Recent Advancements in Understanding the Ecology of Soil Extracellular Enzymes
Provedor de dados: 17
Autores: Matthew Wallenstein; J. Megan Steinweg; Shawna McMahon.
Extracellular enzymes are the agents of detritus decomposition, and are critical for biogeochemical cycling in soils.  Despite decades of research, we have only a rudimentary understanding of the controls on enzyme production, stabilization, turnover, and in-situ activity.  This limits our ability to interpret measured enzyme activities in an ecological framework.  We will present several recent innovations that are advancing our understanding of how soil microbial community interactions with their abiotic environment affect in-situ enzyme activity.  In Arctic tundra soils, we developed a model for in-situ &amp;#x392;-glucosidase activity by extrapolating from enzyme activities measured in the lab at a range of temperatures to actual field temperatures....
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/4115/version/1

Persistent BioPerl
Provedor de dados: 17
Autores: Hilmar Lapp.
I present BioSQL, a generic and highly extensible relational model for storing biological sequences, sequence clusters, genes, sequence features, sequence and feature annotation, and ontology terms. BioSQL also represents the interoperable persistence API among the Bio* life science programming toolkits (BioPerl, Biojava, Biopython, BioRuby), each of which has a language-binding to the BioSQL schema. I specifically present the Bioperl-db software, which in a transparent manner makes BioPerl objects persistent using BioSQL.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/1233/version/1

The data analysis and the knowledge of climate and water resources in South Dakota
Provedor de dados: 17
Autores: Boris Shmagin; Carol Johnston.
The general principles in climate research and relations of deployed models and obtained knowledge for territory like state or river basin presented on the base of results of data analysis of air temperature (Shmagin and Todey, 2008), precipitation (Shmagin, 2010), and stream flow (Chen and Shmagin 2006). The term of data analysis means sequence of activities and procedures to deal with empirical data: composition the observations as initial matrixes (1), primary analysis with simple statistical characteristics and visualization of data with simple graphs to determine general variability and presents of errors (2), and then analysis of time spatial data variability and interconnections in the matrix (3). The cyber model of landscape (Shmagin, 1997) allows...
Tipo: Presentation
Palavras-chave: Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/5287/version/1

Ontology-Based Queries over Cancer Data
Provedor de dados: 17
Autores: Alejandra Gonzalez-Beltran.
The ever-increasing amount of data in biomedical research, and in cancer research in particular, needs to be managed to support efficient data access, exchange and integration. Existing software infrastructures, such as caGrid, support access to distributed information annotated with a domain ontology. However, caGrid&amp;#x27;s current querying functionality depends on the structure of individual data resources without exploiting the semantic annotations. In this paper, we present the design and development of an ontology-based querying functionality that consists of: the generation of OWL2 ontologies from the underlying data resources&amp;#x2019; metadata and a query rewriting and translation process based on reasoning, which converts a query at the...
Tipo: Presentation
Palavras-chave: Cancer; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5406/version/1

Historical deforestation patterns and the conservation value of church forests in the northern Ethiopian highlands
Provedor de dados: 17
Autores: Raf Aerts; Richard Pankhurst; Koen Van Overtveld; Eva J. J. November; Martin Hermy; Bart Muys.
Mountain forest plants have a limited capacity for migration because altitudinal gradients usually set strict limits to plant species&amp;#x2019; ranges and often present physical barriers against dispersal.  Innate &amp;#x2018;islands&amp;#x2019; of biodiversity, mountain forests are therefore particularly vulnerable to the effects of climatic change and habitat fragmentation, both key drivers of global species loss.  Conservation of these ecosystems must for that reason rely on protecting not only large fragments but also small habitat patches and relictual vegetation along a wide altitudinal range.&amp;#xd;&amp;#xa;When large fragments in such ecosystems are no longer available, small fragments become an environmental priority.  Striking examples of...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment; Plant Biology.
Ano: 2008
URL: http://precedings.nature.com/documents/1786/version/1

Psychiatric and Behavioral Genetics: A Useful Distinction?
Provedor de dados: 17
Autores: Joachim Hallmayer.
Dr. Hallmayer began with a discussion of the Nuffield Council on Bioethics&amp;#x27; work on genetics, mental disorders and human behavior.  He further explored psychiatric genetics and urged against the oversimplification of dynamic interactions. &amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch Dr. Hallmayer&amp;#x2019;s presentation, please see the &amp;#x22;Google Video posting.&amp;#x22;:http://video.google.com/videoplay?docid=-5387564337084407366&amp;#x26;hl=en&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch the deliberative discussion concluding the first Symposium panel, please see the &amp;#x22;Google Video posting.&amp;#x22;:http://video.google.com/videoplay?docid=3871777823134971240&amp;#x26;hl=en
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2619/version/1

Small Colony Variants and Senescent Bacteria
Provedor de dados: 17
Autores: Jaison Jacob.
Small colony variants (SCVs) are bacterial subpopulation that grow slowly and form smaller colonies. They have been described for a wide range of bacterial species, but most extensively studied for Staphylococci. They are considered as mutants that are auxotrophic to hemin, thiamine or thymidine. In the presence of auxotrophic agents, they revert to normal growth. They are tolerant to many antibiotics and are implicated in chronic and persistent infections. In this presentation, it is proposed that most of them are normal senescent bacteria that do not revert in the presence of auxotrophic agents. SCVs can explain the concentration dependent killing property, long post-antibiotic effect and increased resistance to aminoglycosides.
Tipo: Presentation
Palavras-chave: Microbiology; Pharmacology.
Ano: 2009
URL: http://precedings.nature.com/documents/3118/version/1

The Data Sharing Challenge. Learning Community From Consortia
Provedor de dados: 17
Autores: Winston Hide; Gabriel Altshuler; Oliver Hofmann; Kimberly Begley.
Today&amp;#x2019;s data generation and analysis environment is changing rapidly as the lure of technologies provide new opportunities to laboratory scientists. From physicians seeking rapid translation to the bedside, to environmentalists seeking new paradigms to understand the biome - large scale data generation is everywhere. How do we overcome the challenges of curation, management, interpretation and sharing of these data in the new multidisciplinary environment? One key approach is to leverage the expertise inherent in existing systems - bringing together tools and paradigms that work in subfields, and making them work together for the consortium. We will discuss the stem cell discovery engine. The approach brings together leading experts in stem cell...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5090/version/1

Quantitative MRI and MR Spectroscopy of Multiple Sclerosis, Alzheimer&amp;#x2019;s Disease, Epilepsy and Cancer Microimaging Techniques
Provedor de dados: 17
Autores: Rakesh Sharma.
Clinical MRI and MRS have promise in molecular imaging. Microimaging techniques offer a promising research tool to get noninvasive data in monitoring the effect of drugs.
Tipo: Presentation
Palavras-chave: Biotechnology; Cancer; Neuroscience.
Ano: 2009
URL: http://precedings.nature.com/documents/3485/version/1

BioSharing - standards, policies and communication in bioscience
Provedor de dados: 17
Autores: Susanna-Assunta Sansone.
Research communities, funding agencies, and journals participate in the development of reporting standards for the bioscience domain to ensure that shared experiments are reported with enough information to be comprehensible and (in principle) reproducible, compared or integrated (Field, Sansone et al., Science, 2009). Similar trends exist in both the regulatory arena and commercial science.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Proliferation of standards is a positive sign of stakeholders&amp;#x2019; engagement, but how much do we know about these standards? Which ones are mature and stable enough to use or recommend? Which tools and databases implement which standard? Etc...&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The BioSharing catalogue (www.biosharing.org)...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6153/version/1

Using a data triangle to understand molecular nutrition
Provedor de dados: 17
Autores: Chris T. Evelo.
Until recently nutrigenomics was mainly about transcriptomics related data. That already confronted us with overwhelming analytical problems. We learned to mathematically and statistically treat genome wide expression studies and studies directed to gene expression regulation. Nutrigenomics researchers had to become bilingual speaking: English and R1 and learned to think about co-expression, clusters and false discovery rates. The latter in fact proofed to be a trap. Removing all the false positives made us loose the information we were really interested in. To understand the results of our genomics experiments we often had to confront what we were measuring with what we already knew. After all false positives are not likely to all be related to the same...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5689/version/1

Towards an Open Taxonomy
Provedor de dados: 17
Autores: Roderic Page.
Taxonomy is in many ways still predigital. Most taxonomic databases are little more than digitized index cards linking names to often-cryptic bibliographic citations, oblivious to the growing volume of scientific literature that is now online. A growing fraction of taxonomic literature is becoming freely available, either through adoption of Open Access publishing models, or through digitizing efforts such as the Biodiversity Heritage Library. Yet much of the most basic information about biodiversity, namely taxonomic description, remains either behind a pay wall, or only available in paper form. This talk sketches the goal of an &amp;#x22;Open Taxonomy.&amp;#x22; The first step towards this goal is digitally linking scientific names to the primary...
Tipo: Presentation
Palavras-chave: Bioinformatics; Evolutionary Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6560/version/1

Bioinformatics for Human Proteomics: Current State and Future Status
Provedor de dados: 17
Autores: Amos Bairoch.
We are entering a new era in the exploration of the human proteome.&amp;#xd;&amp;#xa;Advances in technologies are allowing researchers to map with a much&amp;#xd;&amp;#xa;better resolution and improved accuracy this very complex universe. Such&amp;#xd;&amp;#xa;an exploration also requires a compendium of adequate bioinformatics&amp;#xd;&amp;#xa;tools, data repositories and knowledge resources. We are going to describe&amp;#xd;&amp;#xa;what are the state of the art in term of data and knowledge resources for&amp;#xd;&amp;#xa;human proteins: from repositories of proteomics data such as PRIDE,&amp;#xd;&amp;#xa;PeptideAtlas or Peptidome, databases such as SRMAtlas and HPA and&amp;#xd;&amp;#xa;knowledgebase such as UniProtKB/Swiss-Prot....
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5050/version/1

Nuisance Signal in Resting-State fMRI Study
Provedor de dados: 17
Autores: Xi-Nian Zuo; Michael P. Milham.
We systematically presented various nuisance signals in resting-state fMRI (R-fMRI) dataset. First, we examined the impact of different extraction methods on the default-mode pattern seeded by posterior cingulate cortex (PCC). Second, we compared their differences in test-retest reliability. Finally, we speculated the equivalence of removing global mean signal to removing gray matter mean signal.
Tipo: Presentation
Palavras-chave: Neuroscience; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4352/version/1

Interoperable Semantic Web services (Tutorials)
Provedor de dados: 17
Autores: Mat&amp;#xfa;&amp;#x161; Kala&amp;#x161;; Jon Ison.
Life-scientific Web services are increasingly available and diverse. Their semantic interoperability is crucial to enable automated workflow construction and efficient searching for the right service. At the same time, smooth programmatic access must be possible with all the main programming, scripting, or workflow languages.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;This tutorial gave an introduction to the &amp;#x22;SAWSDL&amp;#x22;:http://www.w3.org/standards/techs/sawsdl#w3c_all standard for semantic annotation of Web services and XML Schemas; the &amp;#x22;EDAM&amp;#x22;:http://edamontology.sourceforge.net ontology for describing bioinformatics tools; and &amp;#x22;BioXSD&amp;#x22;:http://bioxsd.org as a canonical data model for bioinformatics Web services....
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/5565/version/1

Data, Databases, and Communities
Provedor de dados: 17
Autores: Matthew Day.
Overview&amp;#xd;&amp;#xa;* Publishing landscape and challenges&amp;#xd;&amp;#xa;* Nature gateways and databases&amp;#xd;&amp;#xa;* NCI-Nature Pathway Interaction Database&amp;#xd;&amp;#xa;* A few other communication tools
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/2884/version/1

Fundamentals of Molecular Biology
Provedor de dados: 17
Autores: Malay Bhattacharyya.
We present some basic concepts of molecular biology and the related open problems.
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Molecular Cell Biology; Bioinformatics.
Ano: 2012
URL: http://precedings.nature.com/documents/7121/version/1

(Corrected) Osmotic stress and water isotope effects in kinesin-1 gliding motility assays
Provedor de dados: 17
Autores: Steven J. Koch; Andy Maloney; Lawrence J. Herskowitz.
The osmotic pressure and kinetic properties of water play important roles in biomolecular interactions.  As pointed out by Parsegian, Rand, and Rau, these crucial roles are often overlooked[1].  In some fields, osmotic stress and isotope effects have been exploited for probing the role water plays in binding interactions of biomolecules.  To our knowledge, there have been no studies of osmotic stress and water isotope effects for kinesin, and only a handful for myosin.  We&amp;#x27;re currently using the gliding motility assay to see whether we can extract new information about kinesin-1 / microtubule interactions by changing osmotic stress and water isotopes.  We will describe our open-source, automated analysis platform for extracting microtubule gliding...
Tipo: Presentation
Palavras-chave: Molecular Cell Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/4479/version/3

Cutting the trees to save the forest: The Finch Pruyn working forest
Provedor de dados: 17
Autores: Rachel Neugarten; Steven Wolf; Rich Stedman.
The past two decades have seen sales of millions of acres of commercial forest land in the United States. Changed ownership often results in altered forest management, parcelization or development. Such changes have profound implications for forest species and ecosystems, as well as the timber industry, recreational opportunities, and local and regional economies. An emerging strategy seeks to protect lands through complex public-private partnerships involving state agencies, conservation organizations, and commercial investors. By definition, these partnerships have both environmental and socioeconomic goals; as such, they represent contemporary experiments in sustainable development applied to forested landscapes. As this approach is a recent innovation,...
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3690/version/1

Behavioral and Psychiatric Genetics: Learning from History
Provedor de dados: 17
Autores: Kenneth Schaffner.
Behavioral and Psychiatric Genetics (BPG) offers great promise for clarifying the causes of both normal behaviors as well as psychiatric disorders, and in the latter case serving as a more rational basis for treatments. But the field has also generated serious social concerns about individual and ethnic stereotyping of intelligence and violent behaviors. This short talk identifies some of these themes from the 1970s, 80s, and 90s, and reviews recent shifts about the directions BPG is taking in the first decade of the twenty-first century. I cover the collapse of simple molecular gene-behavior models in the 1990s, and the rise of gene-environment interaction paradigms, as well as the increasing role of neuroscience in BPG in the present decade. I close by...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2621/version/1

Identification of Common Genetic Variants Predisposing to Neurobehavioral Disease by way of Genome-Wide SNP Association Studies
Provedor de dados: 17
Autores: David Craig.
Dr. David Craig began by explaining expression and linkage studies.  He then focused on genome-wide association studies (GWAS), giving examples from Diabetes Type 2 and Alzheimer&amp;#x2019;s research.  Dr. Craig concluded with the recognition that GWAS cannot at the present adequately account for environmental influences on disease.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch Dr. Craig&amp;#x2019;s presentation, please see the Panel 3 &amp;#x22;Google Video posting.&amp;#x22;:http://video.google.com/videoplay?docid=-7775076897136846879&amp;#x26;hl=en&amp;#xd;&amp;#xa;
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2652/version/1

Open Standards and Resources in Systems Biology: collaborative scale-up toward virtual life
Provedor de dados: 17
Autores: Nicolas Le Novere.
The practise of Systems Biology relies on interfaces. Interfaces&amp;#xd;&amp;#xa;between the entities we study: the paradigm moved from a physical&amp;#xd;&amp;#xa;object centric view toward a relationship-centric one; interfaces&amp;#xd;&amp;#xa;between tools: From the retrieval of the primary data to the fine&amp;#xd;&amp;#xa;analysis of a model&amp;#x27;s behaviour, one uses many tools, more or less&amp;#xd;&amp;#xa;well connected; interfaces between individuals: To build any&amp;#xd;&amp;#xa;non-trivial mechanistic model requires to merge existing work and&amp;#xd;&amp;#xa;gather external expertise.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;If we want these interfaces to be generic enough to allow for anybody&amp;#xd;&amp;#xa;to leverage on existing...
Tipo: Presentation
Palavras-chave: Biotechnology; Data Standards.
Ano: 2006
URL: http://precedings.nature.com/documents/10/version/1

First steps towards WikiPathways RDF
Provedor de dados: 17
Autores: Andra Waagmeester.
This presentation presents the first steps in modeling WikiPathways content in RDF. WikiPathways is stored in a proprietary GPML format. By modeling this data in RDF, semantic web features become available to WikiPathways content.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6300/version/1

The Systems Biology Markup Language (SBML): Where It&amp;#x27;s Been and Where It&amp;#x27;s Going
Provedor de dados: 17
Autores: Michael Hucka.
A cornerstone of systems biology is the use of computational modeling, by which hypotheses can be cast into a quantitative form that can be tested systematically.  The use of computational modeling by biologists promises to pave the way for more rigorous analyses of biological functions, and ultimately will lead to new and better treatments for disease.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;A crucial enabler for more widespread use of computational modeling in biology is reaching agreement on how to represent, store, and communicate models between software tools. The Systems Biology Markup Language (SBML) project is an effort to create a machine-readable format for representing computational models in biology.  By supporting SBML as an input and output...
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics.
Ano: 2007
URL: http://precedings.nature.com/documents/21/version/1

Why plants lose their inhibitions in the Arctic: functional traits, phylogenetics and respiration in the light
Provedor de dados: 17
Autores: Nicholas Mirotchnick; Owen Atkin; Marc Cadotte; Matthew Turnbull; Kevin Griffin.
Background/Questions/Methods:&amp;#xd;&amp;#xa;Arctic vegetation represents a significant portion of the world&amp;#x2019;s&amp;#xd;&amp;#xa;global carbon stocks and is particularly sensitive to global climate&amp;#xd;&amp;#xa;change. Net plant carbon exchange depends on both photosynthesis and&amp;#xd;&amp;#xa;respiration, the latter of which is poorly understood in arctic&amp;#xd;&amp;#xa;ecosystems and yet is highly sensitive to global environmental change.&amp;#xd;&amp;#xa; Mitochondrial respiration can confound measurements of photosynthesis&amp;#xd;&amp;#xa;and thus is often isolated by measuring it in the dark.  We also know,&amp;#xd;&amp;#xa;however, that respiration can be inhibited by light, which complicates&amp;#xd;&amp;#xa;extrapolations from...
Tipo: Presentation
Palavras-chave: Ecology; Evolutionary Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/5375/version/1

The effects of exurbanization on the food and habitat of pileated woodpeckers
Provedor de dados: 17
Autores: Marie E. Wilson; Jordan M. Casey; David G. Haskell; Nick Hollingshead.
*Background/Question/Methods* &amp;#xd;&amp;#xa;_Dryocopus pileatus_ (pileated woodpeckers) are the largest woodpeckers in the United States. They require large trees for roosting, nesting, and feeding and these trees must be dead or dying for ease of excavation and presence of the woodpeckers&amp;#x27; main prey of ants and grubs. Because of these habitat requirements, pileated woodpeckers are used as an indicator species for mature forests. However, their status in exurban areas, or places of low-density development beyond the suburban fringe, is poorly known. Because exurbanization covers a large and growing portion of the eastern U.S.A., we examined how pileated woodpeckers and their habitat vary across a gradient of exurbanization. We tested the...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2009
URL: http://precedings.nature.com/documents/3751/version/1

Omics Data Sharing - BioSharing: on Data Policies&amp;#x2019;s Plans and Reporting Standards
Provedor de dados: 17
Autores: Susanna-Assunta Sansone.
Several data preservation, management and sharing policies have emerged in response to increased funding for high-throughput approaches in major genomics and functional genomics bioscience domain; and nowadays, several funding agencies also require inclusion of data-sharing plans in grant applications. But despite some commonalities, the policies are heterogeneous by nature, given the different types of communities served and the data types they generate. In parallel, an escalating number of community-driven standardization efforts (including biocurators, database developers and experimentalists, vendors etc), operate to develop minimal requirements checklists, ontologies, and file-formats to support the harmonization of the reporting process, so that...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5049/version/1

Community content building for evolutionary biology: Lessons learned from LepTree and Encyclopedia of Life
Provedor de dados: 17
Autores: Cynthia Parr; Dana Campbell; John Park.
Online resources to aid large-scale ecological and evolutionary biology are beginning to take root, only a decade behind fields such as genomics and molecular biology. One barrier has been a long tradition, in evolutionary biology at least, of work by individuals on the order of a few hundred of species rather than the thousands or hundreds of thousands necessary to understand the general evolutionary or ecological processes that explain species characteristics and distributions. Advances in collaborative and semantic software offer promise &amp;#x2013; it should be possible to develop high quality online species-level datasets for comparative analyses and even to integrate, via machine reasoning, across highly customized datasets. In this talk we will...
Tipo: Presentation
Palavras-chave: Ecology; Bioinformatics; Evolutionary Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/4603/version/1

Mechanisms of cadmium toxicity and tolerance in Populus
Provedor de dados: 17
Autores: Brahma Reddy Induri; Stephen DiFazio; Danielle  Ellis; Gancho  Slavov; Tong-Ming Yin; Gerald  Tuskan.
Abstract ID#: 26642&amp;#xd;&amp;#xa;Background and Methods:&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Cadmium (Cd), ranked the 7th most hazardous substance, is one of the most widespread pollutants of soil and water in industrialized nations. Its increased movement in soil-plant systems is posing a serious threat to human health. Cd, without any known functions in plants, was found to be toxic even at minute concentrations, leading to the development of symptoms such as leaf roll, chlorosis and root and shoot growth reduction. Phytoremediation is an emerging cost-effective and environment friendly technology that utilizes high biomass producing plants including Populus plants to remove, transform or stabilize contaminants in soils. The objectives of our study...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Plant Biology.
Ano: 2010
URL: http://precedings.nature.com/documents/5410/version/1

Metarel: An Ontology to Support the Inferencing of Semantic Web Relations within Biomedical Ontologies
Provedor de dados: 17
Autores: Ward Blond&amp;#xe9;.
Metarel allows the creation of millions of relational inferences in the RDF Knowledge Base BioGateway, by using five types of SPARUL closure queries. Metarel can be found at &amp;#x22;http://www.metarel.org&amp;#x22;:http://www.metarel.org.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3463/version/1

Modeling forest insect population dynamics
Provedor de dados: 17
Autores: Mario Pineda-Krch.
Overview of the Special Interdisciplinary Minisymposium at the 2009 meeting of the Society for Mathematical Biology on modeling of forest insect population dynamics.
Tipo: Presentation
Palavras-chave: Ecology.
Ano: 2009
URL: http://precedings.nature.com/documents/3638/version/1

Behavioral Genetics and Equality
Provedor de dados: 17
Autores: Dan Brock.
I will explore the implications of findings in behavioral genetics for two conceptions of equality: equality of opportunity and the equal moral worth of persons. New findings in behavioral genetics showing that behavioral traits, and the variance in behavioral traits, have some genetic underpinnings would not seem in themselves to threaten either of these notions of equality--we have long known that there is significant variation in these traits across persons and have assumed that some significant portion of that variation has genetic sources. I believe it is the uncertain and probably distant prospect of genetic interventions to enhance some behavioral traits, which could greatly increase the range and inequality of those traits in humans, that may seem...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2566/version/1

Estimation of DNA Sequence Context-dependent Mutation Rates Using Primate Genomic Sequences: Application to Estimation of Selection Bias in Protein (Human TP53) Evolution
Provedor de dados: 17
Autores: Wei Zhang.
Understanding of the mechanism of DNA mutation process is critical for studying the functional consequences of genetic variation in clinical medicine (eg. drug response) as well as other complex traits (eg. gene expression and cause of common diseases). During the last several decades, many probabilistic models of DNA nucleotide substitution have been proposed for studying this process. A common feature of these mutation models is that they assume the nucleotides evolve independently at each site. In other words, they are sequence context-independent models. However, based on various biochemical studies, it is now recognized that the DNA mutation process resulting in substitutions in both coding and non-coding regions may depend on sequence context. We...
Tipo: Presentation
Palavras-chave: Ecology; Bioinformatics; Evolutionary Biology.
Ano: 2007
URL: http://precedings.nature.com/documents/1243/version/1

MIRIAM Resources: next steps
Provedor de dados: 17
Autores: Camille Laibe.
This presentation gives a short introduction of MIRIAM Resources (&amp;#x22;http://www.ebi.ac.uk/miriam/&amp;#x22;:http://www.ebi.ac.uk/miriam/), a robust annotation and cross referencing framework, based on URNs.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;The presentation also explains some potential issues with the current system and presents a possible solution.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;Finally, the presentation introduces some forthcoming and suggested updates and extensions to the current infrastructure.
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/5130/version/1

NCBO Overview and Biositemaps
Provedor de dados: 17
Autores: Patricia L. Whetzel.
none
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/6355/version/1

Development and application of molecular and bioinformatic tools for the genetic monitoring of wild beets
Provedor de dados: 17
Autores: Matthias Enders; Lothar  Frese; Marion Nachtigall.
Crop Wild Relatives (CWR) are an economically important plant genetic resource (PGR) for plant breeding. One strategy to conserve PGR in the natural habitat (in situ) is the genetic reserve technique. This approach protects the existing intraspecific diversity and allows, in contrast to the ex situ approaches, the emergence of new diversity. &amp;#xd;&amp;#xa;The genetic reserve conservation technique will be tested in practice with the Genus _Beta_ within the framework of the EU Project &amp;#x201c;AEGRO&amp;#x201d;. _Beta patula_ (Ait.) (BP) and _Beta vulgaris_ (L.) _maritima_ (Arcang.) (BVM) are used as models. Both species are important resources for sugar beet breeding. BP is a rare and endangered species with a very limited habitat. In contrast BVM...
Tipo: Presentation
Palavras-chave: Bioinformatics; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/5742/version/1

INCF  --   new capability for global coordination in neuroinformatics
Provedor de dados: 17
Autores: Jan G. Bjaalie.
The Global Science Forum (GSF) of the OECD has initiated a new international organization, INCF, to further the development of Neuroinformatics as a global effort with the support of all ministers of research within OECD. This presentation explains the background for the establishment of the INCF, outlines some of the goals, and defines the operations of the INCF Secretariat in relation the INCF National nodes and the general neuroscience community.
Tipo: Presentation
Palavras-chave: Neuroscience.
Ano: 2006
URL: http://precedings.nature.com/documents/7/version/1

Novel network pharmacology methods for drug mechanism of action identification, pre-clinical drug screening and drug repositioning
Provedor de dados: 17
Autores: Jianghui Xiong.
The high rates of failure in oncology drug clinical trials highlight the problems of using pre-clinical data to predict the clinical effects of drugs. Here we present two methodology innovations on network pharmacology modeling. (1) We hypothesize that the gene network associated with cancer outcome in heterogeneous patient populations could serve as a reference for identifying drug effects. We proposed a novel in vivo genetic interaction between genes as &amp;#x2018;synergistic outcome determination&amp;#x2019;, in a similar way to &amp;#x2018;synthetic lethality&amp;#x2019;. We scanned above genetic interactions based on microarray profiling for cancer prognosis, and identified a cluster of important yet epigenetically regulated gene modules. By...
Tipo: Presentation
Palavras-chave: Biotechnology; Cancer; Developmental Biology; Genetics &amp; Genomics; Immunology; Molecular Cell Biology; Neuroscience; Pharmacology; Bioinformatics.
Ano: 2011
URL: http://precedings.nature.com/documents/6455/version/1

The National Vegetation Classification Standard: Implementation and outreach for the state of Oklahoma
Provedor de dados: 17
Autores: Todd D. Fagin; Bruce W. Hoagland; David Lowther.
Efficient stewardship of the nation&amp;#x2019;s biological resources requires a systematic inventory and classification of the systems which support these resources.  However, until recently, a single classification system utilized across jurisdictional boundaries and throughout multiple collecting agencies was non-existent. Rather, conservation priorities were focused primarily at the local and regional scales, with inventory and mapping standards varying from one area to the next. Inconsistent standards of inventories and classifications compounded the difficulties inherent in management of biological resources, namely the ability to present multi-scale, synoptic views of vegetation resources.  In order to address these problems, the Federal Geographic...
Tipo: Presentation
Palavras-chave: Ecology; Data Standards.
Ano: 2009
URL: http://precedings.nature.com/documents/3621/version/1

Dual Diode Array and Fourier Transform Near Infrared Reflectance Spectrometer Calibrations for Composition Analysis of Single Soybean Seeds for Genetic Selection, Cross-Breeding Experiments
Provedor de dados: 17
Autores: I. C. Baianu; Tiefeng You; Randall  L. Nelson.
Experimental results of extensive evaluations of Diode-Array and FT-NIRS instruments are presented that aim at developing reliable and robust NIR calibrations for single soybean seed composition analysis on both Dual Diode Array and Fourier Transform NIR reflectance instruments. Single soybean seed, bulk, and powder calibrations were developed on four different NIRS spectrometer models that are commercially available.
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Genetics &amp; Genomics; Molecular Cell Biology; Plant Biology.
Ano: 2011
URL: http://precedings.nature.com/documents/6195/version/1

Impact of Behavior Genetics on Medicine and Society
Provedor de dados: 17
Autores: Dean Hamer.
Understanding the role of genes in human behavior will impact both medicine and society, but not always in the manner expected. Knowledge about behavioral genes can be used for the good, for example by improving psychiatric diagnoses, developing new drugs to treat mental illnesses, and dispelling harmful myths about certain types of human variation. However, the same sort of information could be used to discriminate against people, to provide quick fixes for social problems, or to support eugenics. How we use the new knowledge about molecular behavior genetics will depend on the legal, ethical and social policies that we develop.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;To watch Dr. Hamer&amp;#x27;s presentation, please see the &amp;#x22;Google Video...
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics.
Ano: 2008
URL: http://precedings.nature.com/documents/2564/version/1

Best practices for building interoperable systems for translational research
Provedor de dados: 17
Autores: Warren Kibbe.
Research databases, clinical systems, and lab systems all have different standards, formats and drivers for data capture, operation, analysis and integration. For interdisciplinary nutritional researchers, however, there is a dependence on all of these areas and technologies. While building and integrating these systems can be difficult, using agile practices including short iterations, testing and continuous integration methods, and close engagement with all stakeholders to create useful systems for translational research. Interoperability also requires good data standards, including the use of structured data dictionaries and existing data standards such as HL7, UMLS, LOINC, ICD, and OBO foundry ontologies.
Tipo: Presentation
Palavras-chave: Genetics &amp; Genomics; Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5197/version/1

Theoretical Investigation on Electronic Properties of Topological Materials: Moebius Nanographite &amp;#xb;and Conjugated Polymers
Provedor de dados: 17
Autores: Kikuo Harigaya.
1. Topological materials: Moebius nanographite and conjugated polymers&amp;#xd;&amp;#xa;2. Magnetic domain wall states [1] vs. helical magmetic order in nanographite [2]&amp;#xd;&amp;#xa;3. Static polarizability [alpha] and the first hyperpolarizability [beta] are studied, comparing three models: Mobius strip cyclacene, ring cyclacene, and linear strip.&amp;#xd;&amp;#xa;4. Opening the knot of the Mobius to form the ring leads to the increase of [alpha] from 268 to 323 a.u. and [beta] increases about three times from 393 to 1049 a.u.&amp;#xd;&amp;#xa;5. Opening the ring to form the linear strip, [alpha] increases from 323 to 476 a.u. [beta] as well increases about three times from 1049 to 2814 a.u.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;[1] K. Wakabayashi and...
Tipo: Presentation
Palavras-chave: Chemistry.
Ano: 2009
URL: http://precedings.nature.com/documents/3881/version/1

SBML Level 3 Hierarchical Model Composition
Provedor de dados: 17
Autores: Lucian P. Smith; Michael Hucka.
A new proposal for incorporating modularity (or &amp;#x27;model composition&amp;#x27;) into SBML Level 3.
Tipo: Presentation
Palavras-chave: Biotechnology; Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5133/version/1

LexOWL: A Bridge from LexGrid to OWL
Provedor de dados: 17
Autores: Cui Tao; Jyotishman Pathak; Harold Solbrig; Christopher  Chute.
The Lexical Grid project is an on-going community driven initiative that provides a common terminology model to represent multiple vocabulary and ontology sources as well as a scalable and robust API for accessing such information. In order to add more powerful functionalities to the existing infrastructure and align LexGrid more closely with various Semantic Web technologies, we introduce the LexOWL project for representing the ontologies modeled within the LexGrid environment in OWL (Web Ontology Language). The crux of this effort is to create a &amp;#x201c;bridge&amp;#x201d; that functionally connects the LexBIG (a LexGrid API) and the OWL API (an interface that implements OWL) seamlessly. In this paper, we discuss the key aspects of designing and...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2009
URL: http://precedings.nature.com/documents/3469/version/1

Bio-resources for sharing: which communities and what specific needs
Provedor de dados: 17
Autores: Andres Metspalu.
Biobanks are an important source to obtain samples and data for research purposes for a wide array of communities. In fact, sharing of bio-resources and data is an integral part of a biobank&amp;#x27;s role. For an effective partnership a list of requirements or needs have to be met, assuring quality of the resources shared as well as quality of the collaboration in general. Tracking and documenting bio-resource sharing and collaborations of a biobank can be seen as one indicator of the &amp;#x22;impact&amp;#x22; a biobank has to the field. As an example, the practice of the Estonian Genome Center of the University of Tartu is presented.
Tipo: Presentation
Palavras-chave: Biotechnology; Genetics &amp; Genomics; Bioinformatics; Data Standards.
Ano: 2011
URL: http://precedings.nature.com/documents/5659/version/1

Context-based generation of kinetic equations with SBMLsqueezer 1.3
Provedor de dados: 17
Autores: Andreas Dr&amp;#xe4;ger; Sandra Nitschmann; Alexander D&amp;#xf6;rr; Johannes Eichner; Michael J. Ziller; Andreas Zell.
The development of predictive, quantitative models constitutes a common task in today&amp;#x2018;s systems biology. To obtain a mathematical model description for the simulation of gene-regulatory, signaling, and metabolic networks, kinetic equations are required for each reaction within the network. Deriving and assembling these formulas is a complicated, time-consuming, and error-prone process that requires knowledge about the structure of interactions, consistently choosing a rate law for each type of reaction, and assignment of appropriate units to all parameters. In many cases, thermodynamic dependencies between the parameters have to be taken into account. For multi compartment models, the concentration units of reacting species have to be converted...
Tipo: Presentation
Palavras-chave: Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4983/version/1

Functional annotation of bacterial sugars
Provedor de dados: 17
Autores: Frederique Lisacek.
Glyco-bioinformatics means different things to different people. It ranges, for example, from the mining of the genome for glycosylation pathway enzymes, through to analysis of microarray expression of glycosyltransferases, to glycoprotein identification data, to the development of tools that facilitate the interpretation of mass spectra and to the construction of structural glycan databases. Lastly, these data need to be mined so that the function of the glycan structures attached to the range of glycoconjugates in nature can be determined. The quality of the data in these databases needs to be maintained for this work to be meaningful.&amp;#xd;&amp;#xa;&amp;#xd;&amp;#xa;For easier analysis, glycan structures are often characterised independent of the...
Tipo: Presentation
Palavras-chave: Bioinformatics; Data Standards.
Ano: 2010
URL: http://precedings.nature.com/documents/5107/version/1

Fire history, fire regimes, and climate change &amp;#x2013; integrating information for management and planning
Provedor de dados: 17
Autores: William T. Sommers.
Background/Question/Methods   &amp;#xd;&amp;#xa;Federal and other natural resource managers in the United States are now required to consider climate change in their planning. Wildland fire is a major component included in many of these planning efforts. Fire is a widespread ecosystem disturbance process that is global in scope with local to regional, event driven, resource and societal impacts.  The frequency, severity and extent of Wildland fires are largely a function of interactions between vegetation and atmospheric processes. Fire activity and management costs have increased significantly over the last few decades. There is growing evidence that these increases relate to measured changes in climate variables. Our understanding of fire history, fire...
Tipo: Presentation
Palavras-chave: Ecology; Earth &amp; Environment.
Ano: 2010
URL: http://precedings.nature.com/documents/5238/version/1

MRI and MRSI Application in Neurodegeneration
Provedor de dados: 17
Autores: Rakesh Sharma.
MRI combined with MR spectroscopy generates better information of both brain tissue composition and mesurement of metabolites or neurochemicals in multiple sclerosis(MS), Alzheimer&amp;#x27;s disease and epilepsy. New fast imaging techniques are technical advance in visualizing accurate anatomy and measurement of absolute neurochemicals in brain. Gray metter seated MS lesions is a new form of disease and lesion may appear normal on MRI but show spectroscopy peaks. High magnetic field scanners are available for fast imaging.
Tipo: Presentation
Palavras-chave: Biotechnology; Chemistry; Neuroscience; Bioinformatics.
Ano: 2010
URL: http://precedings.nature.com/documents/4317/version/1

Institutional Performance in Natural Resource Management: A Study of Institutional Interaction in the Implementation of Watershed Development in Andhra Pradesh, India
Provedor de dados: 31
Autores: Jain,   Dinesh; Gandhi,   Vasant P.
The effective management of natural resources is increasingly critical for growth and development in India. The research examines the nature and impact of the interaction between formal and informal institutional structures in the rural areas in the context of the implementation of the major national initiative of watershed development programmes in India. It uses the concepts of new institutional economics and management theories of governance. It develops a conceptual framework which can be used to understand and explain the need and dynamics of institutional interaction and its relationship to institutional performance. The relevance of the framework is examined through case studies and a primary survey on the determinants of institutional performance...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124319

Improving the Nutrition Quality at What Cost? The Economics of Reducing Sodium Foods
Provedor de dados: 31
Autores: Simpson,   Amanda N.; Campiche,   Jody L.; Holcomb,   Rodney B.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123989

Applications of Biotechnology: Genuine Benefits or Empty Promises?
Provedor de dados: 31
Autores: Dennis,   Elizabeth S.
Tipo: Presentation
Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 2002
URL: http://purl.umn.edu/123927

Belize Rural Development Programme (BRDP): Strategy, achievements and lessons learnt
Provedor de dados: 31
Autores: Avila,   Marcelino.
Bridgetown, Barbados 6th – 10th July, 2009
Tipo: Presentation
Palavras-chave: Belize; 9th EDF; Agriculture; Rural development; Poverty reduction; Small and micro enterprises; Empowerment of stakeholders; Institutional strengthening; Agribusiness; Community/Rural/Urban Development; R11.
Ano: 2010
URL: http://purl.umn.edu/122666

Farming Options for Ameliorating Acidifying Soils in South - Eastern Australia: An Economic Assessment.
Provedor de dados: 31
Autores: Islam,   Q.; Mullen,   John D.; Brennan,   John P.; Li,   G.D.; Helyar,   K.R.; Jones,   Randall E.
Acid and acidifying soils occur extensively in Australia. Currently, some 90 million hectares of agricultural land in Australia is considered to be acidic and around 35 million hectares are considered to be highly acidic which is both a serious agricultural and environmental problem. The nature, impact, and causes of soil acidification vary across Australia, as do farming systems and the institutional and socioeconomic issues relating to land management. In high-rainfall areas of south-eastern Australia, managing acid soils is particularly difficult in permanent pasture systems. In this paper, an economic analysis is made of the results of a long-term trial (MASTER – Managing Acid Soils Through Efficient Rotations) aimed at developing a sustainable...
Tipo: Presentation
Palavras-chave: Soil acidity/pH/amelioration/farming/rotations/gross margin/stocking rates; Crop Production/Industries; Farm Management.
Ano: 1999
URL: http://purl.umn.edu/123818

Learning by Doing – Farmers’ Specialized Cooperatives Development in China
Provedor de dados: 31
Autores: Sultan,   Tursinbek; Huang,   Zuhui; Larsen,   Karin.
In many of the developing (transition) countries, government is promoting the use of cooperatives as organizations that can help enhance the development of farmers and other communities. Agricultural cooperatives are believed to function as a tool for the government in promoting the economic and social development, in particular by creating employment, generating income, eradicating poverty and strengthen farmers’ (market) power within the modern value chain. As for most transitional countries, Chinese government played a primary important role in agricultural cooperatives development. The government attempted to restructure the agro-food system to a modernized and industrialized one by supporting farmer cooperatives and producer organizations. Since the...
Tipo: Presentation
Palavras-chave: Agribusiness; Farm Management; International Development; International Relations/Trade.
Ano: 2011
URL: http://purl.umn.edu/122025

Seafood Trade and Market Access: Threats and Opportunities
Provedor de dados: 31
Autores: Leadbitter,   Duncan.
Humans have been trading seafood and seafood products since time immemorial. This trade has commonly crossed national boundaries, but the scale of trade has increased markedly in the past twenty years. By and large the distilled view of nations is that trade is good and there has been considerable international pressure to encourage and facilitate trade. As trade has increased, so too have the debates over the costs and benefits due to the changes to incomes, wealth distribution, cultures and social cohesion that this trade has driven. Whilst trade has undeniable impacts on natural resources such as fisheries, it is not the sole and ultimate reason for the perilous state of many fisheries in the world. The sustainability of fisheries is ultimately...
Tipo: Presentation
Palavras-chave: International Relations/Trade; Marketing; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/124075

Impacts of "Right of First Refusal" on Competitiveness of Fed Cattle Markets: Results from an Economic Experiment
Provedor de dados: 31
Autores: Koontz,   Stephen R.
Tipo: Presentation
Palavras-chave: Right-of-First Refusal; Market Power; Fed Cattle Markets; Industrial Organization; Marketing.
Ano: 2012
URL: http://purl.umn.edu/123875

Exchange Rate Volatility and Bilateral Agricultural Trade Flows: The Case of the United States and OECD Countries
Provedor de dados: 31
Autores: Kafle,   Kashi R.; Kennedy,   P. Lynn.
This study documents the effect of exchange rate volatility and the real exchange rate on bilateral agricultural exports, imports and total trade (exports + imports) flows between the United States and OECD countries. The effect of exchange rate volatility is estimated both separately from and in combination with the real exchange rate. In addition, implementation of Free Trade Agreements (FTAs) and use of the Euro as a national currency (Euro) are included as dummy variables and their effects on trade flows are also determined. A panel data set, which contains 28 cross-sections and 1148 observations, is used for bilateral trade flows between the United States and OECD countries from 1970 to 2010. With an empirical model based on a gravity equation, the...
Tipo: Presentation
Palavras-chave: Bilateral agricultural trade; Exchange rate volatility; OECD¬ countries; Gravity equation; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/119736

Managing Expected Switchgrass Biomass Yield Variability by Strategically Selecting Land to Lease
Provedor de dados: 31
Autores: Debnath,   Deepayan; Stoecker,   Arthur L.; Epplin,   Francis M.
Biorefineries that plan to use switchgrass exclusively will have to account for year-to-year variability in feedstock production. The objective of this research is to determine the quantity, class, and location of land to lease for switchgrass production to provide for the needs of a biorefinery. The firm could elect to lease land based on average switchgrass yields or to lease to attempt to insure that even in the worst case (based on historical data) production year the area leased will produce sufficient feedstock to fully provide for the needs of the biorefinery. EPIC was used to generate empirical distributions of switchgrass biomass yields for three land classes for each of 30 counties. Mathematical programming was used to address the objectives and...
Tipo: Presentation
Palavras-chave: EPIC; Mathematical programming; Switchgrass; Yield variability; Crop Production/Industries; Land Economics/Use; Risk and Uncertainty; Q42; Q12.
Ano: 2012
URL: http://purl.umn.edu/124230

John R. Commons and the Evolution of Institutions: The Case of the Malian Cotton Sector
Provedor de dados: 31
Autores: Theriault,   Veronique; Sterns,   James A.
Applying John R. Commons institutional economic framework, this paper analyzes the evolution of the key institutions in the Malian cotton sector starting with the CFDT contract following the country‘s Independence in 1960; the nationalization of the cotton gin company, CMDT, in 1974; the completion of a vertically integrated market structure from the mid-1980s to mid-1990s; and, finally, to the current state of the market-oriented reforms in 2010. In accordance with John R. Commons’ economic theory, institutional changes in the Malian cotton sector have led to both intended and unintended consequences impacting economic performance at the farm, gin, and State levels, which in turn, has contributed to the emergence of new limiting factors. At present, the...
Tipo: Presentation
Palavras-chave: John R. Commons; Institutions; Cotton; Mali; Institutional and Behavioral Economics; International Development.
Ano: 2012
URL: http://purl.umn.edu/124460

TRANSMISSÃO DE PREÇOS DA SOJA ENTRE OS MERCADOS EXTERNO E INTERNO: UMA ABORDAGEM PARA A REGIÃO DE MARINGÁ.
Provedor de dados: 31
Autores: Tonin,   Julyerme Matheus; Barczsz,   Silvio Silvestre.
Esse artigo buscou analisar a relação de preços entre o mercado interno, especificamente a região de Maringá e o mercado externo da soja no período de julho de 1994 a dezembro de 2007. A teoria que embasa o trabalho é a Lei do Preço Único. Em se tratando de preços nos mercados interno e externo, deve-se verificar se tais preços são altamente relacionados, o que significa que são bons indicadores e podem ser considerados como referências seguras na tomada de decisão dos agentes, além de observar sua causalidade e sentido. Para tanto, foram realizados os testes de estacionariedade, causalidade de Granger e de co-integração. O teste de Granger sugere que há relação bidirecional entre as séries de preço analisadas, observou-se também a existência de uma...
Tipo: Presentation
Palavras-chave: Transmissão de preço; Causalidade; Co-integração; Maringá; Price transmission; Causality; Co-integration; Maringá; Crop Production/Industries; Marketing.
Ano: 2008
URL: http://purl.umn.edu/118707

Optimizing whole-farm management considering price and climate risks
Provedor de dados: 31
Autores: Lehmann,   Niklaus; Finger,   Robert.
We investigate impacts of climate change (CC) and likely increases in price risks on income, income variability, utility and on adaptation responses in crop production in Western Switzerland. To this end, a bio-economic model is used that combines a crop growth model with an economic decision model non-parametrically using genetic algorithms. Our analysis focuses on the farm-level, which enables us to integrate a much wider set of potential adaptation responses in our analysis. The model is applied to four scenarios that represent likely changes in environmental conditions due to CC as well as increasing price risks due to market liberalization, and combinations thereof. It shows that CC has the larger influence on farm-level income and utility as well as...
Tipo: Presentation
Palavras-chave: Genetic Algorithms; Agricultural Modeling; Climate Change; Price risks; Risk and Uncertainty; Q12.
Ano: 2012
URL: http://purl.umn.edu/122533

Predicting the Benefits of Banana Bunchy Top Virus Eradication in Australia
Provedor de dados: 31
Autores: Cook,   David C.; Liu,   Shuang; Edwards,   Jacky; Villalta,   Oscar; Aurambout,   Jean-Philippe; Kriticos,   Darren J.; Drenth,   Andre; De Barro,   Paul J.
Benefit cost analysis is a tried and tested analytical framework that can clearly  communicate likely net changes in social welfare from investment decisions to  diverse stakeholder audiences. However, in a plant biosecurity context, it is often  difficult to predict policy benefits over time due to complex biophysical interaction between invasive species and their hosts. In this paper, we demonstrate how benefit cost analysis remains highly relevant to biosecurity decision-makers using the example of a plant pathogen targeted for eradication from banana growing regions of  Australia, banana bunchy top virus. We develop a partial budgeting approach using a stratified diffusion spread model to simulate the likely benefits of eradication to the banana...
Tipo: Presentation
Palavras-chave: Biosecurity; Benefit cost analysis; Invasive alien species; Crop Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124270

Muddied Waters: Estimating the national economic cost of soil erosion and sedimentation in New Zealand
Provedor de dados: 31
Autores: Eastwood,   Callum; Krausse,   Michael; Alexander,   Robert R.
Soil erosion research in New Zealand has focused on the on-site costs of soil loss in the form of production loss and storm damage. Subsidization and implementation of soil conservation measures have primarily been justified through maintenance or improvement of farm productivity levels. The shift in responsibility for soil conservation management and damage remedies from national to regional government has highlighted public good issues raised by soil erosion. This paper develops an inventory and assessment of the relative magnitude of the impacts of soil erosion and sedimentation in New Zealand. It also provides an estimate of the total economic costs of these impacts based on the limited data available. The impacts of greatest economic significance are...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123632

Envesting in an Agricultural Legacy:  Impact of a Targeted Young and Beginning Farmer Loan Program in Arkansas
Provedor de dados: 31
Autores: Goeringer,   L. Paul; Goodwin,   Harold L., Jr.; Dixon,   Bruce L.; Popp,   Michael P.
America’s agricultural producers continue to age.  According to the U.S. Census of Agriculture, the average age of farm operators increased from 55.3 in 2002 to 57.1 in 2007.  During the same period, the Census shows a thirty percent decrease in the number of farmers under the age of 25.  Young and beginning producers (YBPs) entering agriculture can be faced with high startup costs and the lack of land to own or rent.  To address this potential shortage of future farmers, we propose a program for the Farm Credit System to assist YBPs by offering Farm Service Agency guaranteed loans.  In this program YBPs are given concessionary interest rates in consideration for adopting conservation and recommended “best” practices.  To gauge the impact of the loan...
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural Finance; Farm Management; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/124427

U.S. Tobacco Growers’ Concern about the Impact of the FDA Regulation of Tobacco Products
Provedor de dados: 31
Autores: Feleke,   Shiferaw T.; Starnes,   Jane H.; Tiller,   Kelly.
The objective of the paper is to establish an empirical relationship between household characteristics and tobacco growers’ perception of the impact of the FDA regulation. A logistic model is applied on primary data that came from the Center for Tobacco Grower Research’s (CTGR’s) 2011 mail survey of tobacco producers. Results indicate that over 80 percent of the sample tobacco growers are concerned about the impact of the FDA regulation. The profiles of growers who reported to be concerned about the impact of the FDA regulation are not significantly different from those of growers who reported that they are not concerned or somewhat concerned. This result highlights the importance of engaging all groups of growers in discussion to elaborate whether, and if...
Tipo: Presentation
Palavras-chave: Tobacco; U.S. Food and Drug Adminstration; Regulation; Agricultural and Food Policy.
Ano: 2012
URL: http://purl.umn.edu/119792

The Value of Transportation for Improving the Quality of Life of the Rural Elderly
Provedor de dados: 31
Autores: Israel,   Alicia; Mjelde,   James W.; Dudensing,   Rebekka M.; Cherrington,   Linda; Jin,   Yanhong H.; Chen,   Junyi.
When an elderly individual living in a rural community is no longer able to drive, issues that come with living in an isolated area (i.e. limited access to health and personal services, distance between home and town centers) are exaggerated and the individual may experience a decrease in their quality of life.  Public transportation that supports elderly individuals may be an important issue for rural communities to consider in creating an aging-friendly community and maintaining quality of life for residents who are no longer able to drive.  The purpose of this research is to obtain an understanding of opinions about public transportation for the elderly held by rural county residents and their WTP for transportation options through an additional vehicle...
Tipo: Presentation
Palavras-chave: Elderly Transportation; Rural Transportation; Rural Elderly; Rural Quality of Life; Community/Rural/Urban Development.
Ano: 2012
URL: http://purl.umn.edu/119667

28th Annual Conference - Australian Agricultural Economics Society, Sydney, 7-9 February 1984
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1984
URL: http://purl.umn.edu/118923

The Impact of Natural Amenity on Farmland Values: A Quantile Regression Approach
Provedor de dados: 31
Autores: Uematsu,   Hiroki; Mishra,   Ashok K.
The objective of this study is to estimate the impact of natural amenity on farmland values in the contiguous United States using a quantile regression approach and data from the 2006, 2007, and 2008 Agricultural Resource Management Surveys. The contribution of this study is three-fold. First, we explicitly include variables representing natural amenity and soil characteristics of farmland. Second, we employ a quantile regression approach to examine potentially heterogeneous impacts of natural amenity and soil characteristics at different quantiles of farmland values. Third, we utilized data from a nationwide survey of farm household to examine findings in studies using regional data are consistent at a national scale. Our quantile regression analysis...
Tipo: Presentation
Palavras-chave: Farmland Values; Quantile Regression; Natural Amenity; Environmental Economics and Policy; Land Economics/Use; C14; Q15; Q24.
Ano: 2012
URL: http://purl.umn.edu/119804

The Impact of ‘Rice for the Poor’ on Household Consumption
Provedor de dados: 31
Autores: Pangaribowo,   Evita Hanie.
This study investigates the impact of the 'Rice for the Poor' program - an almost universal program of Indonesian Social Safety Net (SSN) Programs launched in 1998. The general aim of the program was to mitigate the decrease of household nutrition well-being. The program has provided highly subsidized rice for poor households. Using the Indonesian Family Life Survey, this study implements propensity score matching combined with difference in difference method. It is revealed that the program has increased households' consumption on nutrient-rich, animal source food though aid-fungibilty was also present.
Tipo: Presentation
Palavras-chave: Impact evaluation; ‘Rice for the Poor’; Nutrient-rich food; Food Consumption/Nutrition/Food Safety; Food Security and Poverty.
Ano: 2012
URL: http://purl.umn.edu/124358

An Exploration of Irish Consumer Acceptance of Nanotechnology Applications in Food
Provedor de dados: 31
Autores: Greehy,   Grainne; McCarthy,   Mary; Henchion,   Maeve M.; Dillon,   Emma J.; McCarthy,   Sinead.
Nanotechnology has come to the attention of food stakeholders in recent years. It offers many potential benefits to food companies and consumers, for example the ability to produce healthier food without compromising taste, but it has also generated much debate, in particular about potential unknown risks associated with food applications of nanotechnology. This research provides some insights into Irish consumer acceptance of food related applications of nanotechnology and details the determining factors framing consumers’ attitudes. Key issues investigated include consumers’ awareness of and attitudes towards nanotechnology, the subjective values (including perceived risk-benefit trade-offs) that frame these attitudes and the influence of new information...
Tipo: Presentation
Palavras-chave: Novel food technologies; Nanotechnology; Consumer acceptance; Risk perceptions; Risk communication; Deliberative discourse; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Research and Development/Tech Change/Emerging Technologies.
Ano: 2011
URL: http://purl.umn.edu/122006

CERTIFICATION ON SUSTAINABILITY IN THE BIOFUEL SECTOR: a case study on Brazilian ethanol
Provedor de dados: 31
Autores: Zezza,   Annalisa.
This paper tries to identify under which conditions voluntary certification could be an answer to the governance of sustainability at global level. The study addresses the case of biofuel sustainability certification in Brazil and the role of the EU Directive on biofuels. The case study has permitted to identify and analyze some of these factors as the degree of dependence from foreign market, the policy environment, the structure of the supply chain, the benefits and costs associated to certification as well as some unintended consequences. The research has been conducted through a case study in the state of Sao Paolo (Brazil).
Tipo: Presentation
Palavras-chave: Biofuel; Certification; Brazil; EU; Sustainability; Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124112

Efficiency Analysis of Rural Hospitals: Parametric and Semi-parametric Approaches
Provedor de dados: 31
Autores: Nedelea,   I. Cristian; Fannin,   James Matthew.
This paper examined cost efficiency differences between rural hospitals participating in the Critical Access Hospital (CAH) Program and a group of non-converting, prospectively paid rural hospitals using both a two-stage semi-parametric approach as well as stochastic frontier analysis (SFA).  CAHs receive Medicare cost-based reimbursement, in contrast with the rest of the hospitals reimbursed under Medicare prospective payment system (PPS).  However, cost-based reimbursement has been associated with inefficiency in hospital operations and, consequently, concerns have been raised about the efficiency of CAHs.  Results showed a positive and significant effect of CAH status on cost inefficiency under both model specifications suggesting that CAHs were less...
Tipo: Presentation
Palavras-chave: Rural hospitals; Efficiency; SFA; Two-stage approach; Community/Rural/Urban Development; Health Economics and Policy; Production Economics; Productivity Analysis; Public Economics; Research Methods/ Statistical Methods; I18.
Ano: 2012
URL: http://purl.umn.edu/119725

Returns on investment in wild dog management-beef production in the South Australian Arid Lands
Provedor de dados: 31
Autores: Wicks,   Santhi; Allen,   Benjamin.
Beef cattle producers in Australia have reported an increase in calf losses as a result of wild dog attacks in recent years. However, while control measures may reduce calf losses from wild dog attacks, they may also reduce attacks on kangaroos. Thus, wild dog control measures may inadvertently increase kangaroo competition with cattle for grazing vegetation, which is potentially costly for graziers. In this study the net returns to beef production from investments in wild dog controls in a case study area—omitting the social and environmental effect of wild dogs—is assessed. The case study area for this study includes the natural resource management district groups of Marla–Oodnadatta and Marree–Innamincka, in the South Australian Arid Lands. A...
Tipo: Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124479

Whole Truth in Herbicide Labelling
Provedor de dados: 31
Autores: Nordblom,   Thomas L.; Medd,   Richard W.
The 1999 National Competition Policy Review of Ag &amp; Vet Chemical legislation recommended, inter alia, that registrants no longer be required to prove ‘APPROPRIATE’ levels of efficacy of their products but only that the claims on product labels be ‘TRUE’. ‘Appropriate’ efficacy standards amount to market regulation, limiting economic competition from formulations with lower efficacies. Cheaper formulations with lower efficacies are excluded from the marketplace by such standards. Unanswered is the question of what ‘TRUTH’ on a label means in practical terms. Flexibility in dose rates and guidance with usage information is not always well-stated on herbicide labels. There is considerable evidence that efficacy of herbicide varies with dose and with...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123711

Effects of Demographics and Attitudes on WTP for Fuel Import Reductions through Ethanol Purchases
Provedor de dados: 31
Autores: Jensen,   Kimberly L.; Clark,   Christopher D.; English,   Burton C.
Energy economics
Tipo: Presentation
Palavras-chave: Imported fuel; Willingness to pay; Marketing.
Ano: 2011
URL: http://purl.umn.edu/119146

Price Setting in Food SMEs: Which Role for Marketing Capability? An Empirical Analysis in Italy
Provedor de dados: 31
Autores: Banterle,   Alessandro; Carraresi,   Laura; Cavaliere,   Alessia.
Small and medium-sized enterprises (SMEs) are fighting for survival due to globalization, growing competition with big retailers, and strategies adopted by large industrial companies. Difficulties in pricing are also revealed in the literature. Therefore, appropriate activity is needed to be more a price maker than a taker, and to reach a better market power. On the other hand, market opportunities for SMEs are related to demand evolution toward food quality and traditional food products. To profit by such opportunities, SMEs need to focus on consumer requirements, by differentiating their products. In this way, firms could apply a premium price that justifies the peculiar value of the product, and that the consumer should be willing to pay. Nonetheless,...
Tipo: Presentation
Palavras-chave: Traditional food products; Price setting; Marketing capability; Ordinal regression model; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Marketing; Research Methods/ Statistical Methods; L25; L66; M31; Q13.
Ano: 2011
URL: http://purl.umn.edu/122000

Breeder Demand for and Utilisation of Wheat Genetic Resources in Australia
Provedor de dados: 31
Autores: Brennan,   John P.; Godden,   David P.; Smale,   Melinda; Meng,   Erika C.H.
As part of an ACIAR-funded project on genetic diversity in wheat in Australia and China, Australian wheat breeders were surveyed to assess the importance of genetic diversity to breeders. This paper reports the findings of that survey, and identifies the key issues that concern wheat breeders. The issues addressed include the breeders’ attitude to diversity and the diversity available in their current gene pool. The sources of materials that breeders use to maintain and/or increase diversity in their programs are identified, and ways in which diversity influences breeding decisions are also examined. More importantly from the policy view point, survey responses identify changes over time in the environment in which breeders operate that affect the extent...
Tipo: Presentation
Palavras-chave: Genetic/diversity/wheat/breeder/survey; Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123776

PRESENTATION BY THE MANITOBA RED MEAT FORUM TO THE WDO STEERING COMMITTEE
Provedor de dados: 31
Autores: Faminow,   Merle D.
Tipo: Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124308

Did the CAP reform affect off-farm labour participation in Italian farms?
Provedor de dados: 31
Autores: Corsi,   Alessandro; Salvioni,   Cristina.
The process of change in the Common Agricultural Policy (CAP) from trade and market distorting measures to more neutral interventions has been long, but in this process the 2003 reform (the so-called Fischler reform) has been the most important step, leading to a more decoupled, and hence less market distorting, support (Oecd, 2004) and introducing the fully decoupled Single Farm Payment Scheme (SFP). In this paper, we estimate a model of operators’ off-farm labour participation from a panel of Italian COP farms drawn from the FADN. To this purpose we use a random effects probit model, thus controlling for unobserved heterogeneity. The results suggest that the effects of the reform on off-farm labour participation, if any, are weak. No variable directly...
Tipo: Presentation
Palavras-chave: CAP reform; Off-farm work; Farm household; Agricultural and Food Policy; J220; J430; Q120; Q180.
Ano: 2012
URL: http://purl.umn.edu/124098

Farm production costs estimation trough PMP Models: an application in three Italian Regions
Provedor de dados: 31
Autores: Arfini,   Filippo; Donati,   Michele; Marongiu,   Sonia; Cesaro,   Luca.
The objective of this paper is to present a Generalised Positive Mathematical Programming model suitable for the estimation of variable cost of production associated with different farm activities. This work present, discuss and demonstrates that the Generalised PMP model is a useful theoretical framework for the representation of farm choice, including for the description of costs related to the production function chosen by each entrepreneur. For this characteristics the model can be used for the farms belonging the FADN sample providing a powerful tools for researcher that would like to know variable costs of production for agricultural activities or estimate the impact of agricultural policy and market reform at regional and sectorial level. The main...
Tipo: Presentation
Palavras-chave: Variable cost of production; Positive mathematical programming; Farm accountancy data network; Production Economics; Q12; C61; Q18; C38.
Ano: 2012
URL: http://purl.umn.edu/124117

How can we evaluate conservation auctions? Three Possible methods
Provedor de dados: 31
Autores: Schilizzi,   Steven.
By design, tenders are used when costs are unknown. But if costs are unknown, how can we evaluate the tenders, when their evaluation involves measuring their cost-effectiveness? We identify three approaches: theoretical, empirical and experimental. We first use experimental data to compare the efficiency of each approach, then apply the most efficient one to field data from the Scottish fishing vessel decommissioning program. We estimate the potential errors one would make in using a less efficient approach. In this case, we demonstrate a novel use of controlled lab experiments for interpreting field data and evaluating policy effectiveness.
Tipo: Presentation
Palavras-chave: Auctions; Conservation; Experiments; Evaluation; Measurement; Market-based policy instruments; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124442

Fruit Flies: Solutions to Food Crop Losses and Opportunities for Business Development
Provedor de dados: 31
Autores: Drew,   Dick.
Fruit flies are the major insect pests of fruit and vegetable production, worldwide. In developing countries, fruit crop losses are so large that they contribute significantly to reduced household food security, poor human nutrition and poverty. In addition to the direct crop losses, many countries lose export trade opportunities if they have major pest fruit fly species, while others spend considerable sums on quarantine detection and eradication procedures in order to remain free of fruit fly. Indeed, fruit flies rate with some of the major animal diseases in terms of economic losses and quarantine problems.
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2001
URL: http://purl.umn.edu/124447

Communities and Participatory Forest Management
Provedor de dados: 31
Autores: Kanowski,   Peter.
Forest management which is more inclusive of the interests of local people has been one of the central foci of forestry globally for the past 25 years. Countries in which there is a strong dependency between people and forests, such as Nepal, have been at the forefront of this more participatory forest management, which is closely associated with devolution of State authority over forests. The participatory management paradigm recognises both the potential of local people and the limits of central government for sustainable forest management. A second generation of participatory forest management is now emerging, drawing on the diverse experiences and mixed outcomes of the first generation; increasingly, it recognises the need for synergistic collaboration...
Tipo: Presentation
Palavras-chave: Community/Rural/Urban Development; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124413

Impact of Russia and Ukraine on the international price formation and the EU markets - A Model based analysis
Provedor de dados: 31
Autores: Banse,   Martin; Salamon,   Petra; Ledebur,   Oliver von; van Leeuwen,   Myrna; Bouma,   Foppe; Salputra,   Guna; Fellmann,   Thomas; Nekhay,   Olexandr.
This paper examines the effect of the future developments of Russian and Ukrainian agricultural sectors and their impact on the world market prices for arable crops. Employed in the study is AGMEMOD, a partial equilibrium economic model of EU agriculture at the Member State level that has been extended by Russia and Ukraine to gain quantitative insights. Vital for the project has also been the integration of an endogenous world market price module including a stylized Rest of the World (ROW) model. In Russia and Ukraine, there is a strong focus on plant production in general and on grain based animal production; Russia and Ukraine are mostly net-exports of those products. Under the baseline, in Russia prices for crops and oilseeds are below the world...
Tipo: Presentation
Palavras-chave: Partial equilibrium model; Price formation; Russia; Ukraine; Agricultural and Food Policy; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122536

Including risk in enterprise decisions in Australia’s riskiest businesses
Provedor de dados: 31
Autores: Keogh,   Mick.
This study uses measures of revenue volatility to make comparisons between the business environments experienced by Australian and international farm businesses, and also between Australian farm businesses and businesses in other sectors of the Australian economy. The results indicate that Australian farm business managers operate in a more volatile business environment than is the case for virtually all national agriculture sectors world-wide, and also that businesses involved in Australian agriculture experience more than twice the level of volatility on average of businesses in other sectors of the Australian economy. These findings highlight the differences between agricultural and non-agricultural businesses, and therefore the need for different...
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/124202

STRUCTURAL ANALYSIS OF AGRICULTURE: A METHODOLOGICAL PERSPECTIVE
Provedor de dados: 31
Autores: Gali,   Jyothi; Tate,   Carole; O’Sullivan,   Mark.
The structure of agriculture and of its food and fibre systems have changed considerably over the past century, reflecting internal and external factors such as institutional, societal (demographic and consumer), technological, economic, human capital, and financial causes. Within a static setting, the analysis of the structure of agriculture can be undertaken with the traditional structure-conductperformance (S-C-P) model of industrial organisation economics which stems from neoclassical economic theory. However, in a period of relatively rapid change in information and communication technologies, in business and consumer expectations and in institutional factors, alternative tools and approaches are required. Changes that are expected to occur cannot be...
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy.
Ano: 2000
URL: http://purl.umn.edu/123650

Using Ecological Indices and Economics to Explain Diversity in a Wheat Crop: Examples from Australia and China
Provedor de dados: 31
Autores: Smale,   Melinda; Meng,   Erika C.H.; Brennan,   John P.; Hu,   Ruifa.
Spatial diversity indicators may serve policymakers as they seek to manage crop genetic diversity and externalities associated with diffusion of some genetically modified crops. This paper adapts ecological indices of spatial diversity to area distributions of modern wheat varieties in contrasting production systems of Australia and China. The variation in three concepts of spatial diversity—richness, abundance, and evenness—is explained using Zellner’s seemingly unrelated regression (SUR). Determinants of wheat diversity differ by concept, but include variety traits other than yield potential, environmental factors, and policies affecting the supply of varieties, research spill-ins, and market liberalization.
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy; Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123732

Pastoral Communities in Nigeria: Another Case of Marginalisation
Provedor de dados: 31
Autores: Aderinoye-Abdulwahab,   S.A.; Adefalu,   L.L.
The study which was conducted in rural communities of Kwara State, Nigeria set to uncover how pastoralists‟ families cope with their livelihoods when their husbands have gone grazing with the cattle. It examined the social and financial coping strategies of their families through Focus group discussions and interviews with pastoralists, their wives and some extension agents. The findings revealed that the pastoralists live in marginalised conditions and they lack access to social services needed to boost their living conditions. The study recommended increased social networks by government and agricultural bodies to improve on the livelihoods of these people.
Tipo: Presentation
Palavras-chave: Pastoralists; Community; Marginalisation; Extension services.; Community/Rural/Urban Development.
Ano: 2012
URL: http://purl.umn.edu/124218

Elegy, ode or panegyric: Australian agricultural economics in the last quarter of the twentieth century
Provedor de dados: 31
Autores: Godden,   David P.
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2000
URL: http://purl.umn.edu/123652

The effect of agricultural policy change on income risk in Swiss agriculture
Provedor de dados: 31
Autores: El Benni,   Nadja; Finger,   Robert; Mann,   Stefan.
The study examines the effect of agricultural policy reforms on income variability of Swiss farmers. The observed heterogeneity in income risks across farms and time is explained with farm and regional characteristics. FADN data are used to construct coefficients of variation of total household income and gross revenues at farm-level over the period 1992-2009. Applying linear mixed effect models the effects of off-farm income, direct payments, farm size, specialisation and liquidity on gross revenue and household income variability in three different production regions are measured. The switch from market-based support to direct payments decreased the variability of farm revenues and household income. Off-farm income has a positive and farm size a negative...
Tipo: Presentation
Palavras-chave: Income risk; Agricultural policy; Direct payments; Risk and Uncertainty; Q12; Q14; Q18.
Ano: 2012
URL: http://purl.umn.edu/122532

FOOD, WATER AND SECURITY: WHAT ARE THE CONNECTIONS?
Provedor de dados: 31
Autores: Dupont,   Alan.
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123867

The relationship between farm profit and nitrogen exports on representative dairy farms in the Moe River catchment, Victoria
Provedor de dados: 31
Autores: Stott,   Kerry; Doole,   Graeme J.; Vigiak,   Olga; Kumaran,   Thabo; Roberts,   Anna M.
Ambitious nutrient reduction targets have been set for the Gippsland Lakes, Victoria but at what cost to productive agriculture? An interdisciplinary approach is addressing this question for the Moe River catchment, a dairy-dominated catchment that is a major source of pollutants to the Gippsland Lakes. Off-farm nitrogen exports are being estimated by biophysical modellers, and economists are quantifying the impact of farming systems and agricultural practices on farm profitability. This information is assembled to form the interim profit-pollution frontier for nitrogen reported in this paper, and to calculate abatement costs. Phosphorus and sediment exports will be considered in future work. This information is intended for use in a landscape-optimisation...
Tipo: Presentation
Palavras-chave: Nutrient management; Profit-pollution frontiers; Abatement costs.; Farm Management.
Ano: 2012
URL: http://purl.umn.edu/124454

More than Mean Effects: Modeling the Effect of Climate on the Higher Order Moments of Crop Yields
Provedor de dados: 31
Autores: Tack,   Jesse B.; Harri,   Ardian; Coble,   Keith H.
The objective of this article is to propose the use of moment functions and maximum entropy techniques as a flexible way to estimate conditional crop yield distributions. We present a moment based model that extends previous approaches in several dimensions, and can be easily estimated using standard econometric estimators. Upon identification of the yield moments under a variety of climate and irrigation regimes, we utilize maximum entropy techniques to analyze the distributional impacts from switching regimes. We consider the case of Arkansas, Mississippi, and Texas upland cotton to demonstrate how climate and irrigation affect the shape of the yield distribution, and compare our findings to other moment based approaches. We empirically illustrate...
Tipo: Presentation
Palavras-chave: Risk; Climate change; Moments; Entropy; Yield; Cotton; Crop Production/Industries; Production Economics; Research Methods/ Statistical Methods; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/123330

Derivatives at Agricultural Banks
Provedor de dados: 31
Autores: Shen,   Xuan; Hartarska,   Valentina M.
Using data between 1995 and 2010, we find that agricultural banks are benefiting from the derivatives activities by reducing total risk without hurting their profit. In nonagricultural banks, both profitability and total risk are adversely affected, possibly due to speculative derivatives positions.
Tipo: Presentation
Palavras-chave: Agricultural Banks; Financial Derivatives; Profitability; Risk Management; Agricultural Finance; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/119789

Risk and Uncertainty Analysis with Networks of Decisions
Provedor de dados: 31
Autores: Recke,   Guido.
In this paper an applied approach for analysing economic problems under risk and uncertainty based on networks of decisions (NODs) will be discussed. It can be shown that network of decision analysis can help to understand complex decision problems under risk and uncertainty in single case situations. A variety of decision criteria like expectation values and a special ANOVA can be used to get better knowledge about prediction and controllability of the decision problems.
Tipo: Presentation
Palavras-chave: Networks of decisions; Decision criteria; Variance analysis; Prediction; Control; Risk and Uncertainty.
Ano: 2011
URL: http://purl.umn.edu/120536

Economic analysis of integrated weed management strategies for annual barnyardgrass (Echinochloa crus-galli complex) in Philippine rice farming systems
Provedor de dados: 31
Autores: Beltran,   Jesusa C.; Pannell,   David J.; Doole,   Graeme J.; White,   Benedict.
This paper describes a dynamic simulation model that has been developed to provide a comprehensive assessment of integrated weed management programmes for the control of annual barnyardgrass (Echinochloa crus-galli complex) in Philippine rice farming systems. The main outputs of the model include weed seed and plant densities and seasonal and annualised profit over the simulated planning horizon. Model output emphasises the substantial economic benefits associated with effective long-term weed management strategies. In addition, a mixture of chemical and non-chemical treatments provides good weed control in rice crops, and maximises long-term profit for systems where the main weed is annual barnyardgrass. However, the performance of this strategy is...
Tipo: Presentation
Palavras-chave: Barnyardgrass; Bioeconomic model; Integrated weed management; Rice farming systems.; Crop Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124236

Classification of rural areas in Europe using social sustainability indicators
Provedor de dados: 31
Autores: Chatzinikolaou,   Parthena; Manos,   Basil D.; Bournaris,   Thomas.
Social sustainability is “one of the three legs of the sustainability stool” (the other two are environmental and economic. There is limited literature that focuses on social sustainability to the extent that a comprehensive study of this concept is still missing. As a result, there have been very few attempts to define social sustainability as an independent dimension of sustainable development. Social sustainability is related to social capital, social inclusion, social exclusion and social cohesion in rural economies, terms that are measured by relevant social sustainability indicators. This paper aims to measure these indicators and to compare them. In order to measure these indicators, a household survey carried out in the context of the research...
Tipo: Presentation
Palavras-chave: Ranking; Rural areas; Indicators; Multicriteria analysis; Social sustainability; Community/Rural/Urban Development.
Ano: 2012
URL: http://purl.umn.edu/124104

A Censored Demand System Analysis of Fruits and Vegetables by Different Income Groups Using Micro Data
Provedor de dados: 31
Autores: Niu,   Luyuan; Wohlgenant,   Michael K.
This study examines demand for fruits and vegetables segmented by income levels in a complete demand system framework using the Consumer Expenditure Survey (CEX) from 2002 to 2006. Results show that disparities are found between high-income households and low-income households. Seasonal effects and demographic variables, such as household heads’ race and gender, region, household size and household composition, play an important role in fruit and vegetable consumption for both categories of household. In contrast, urban status, household heads’ educational level and age are not found to have a statistically significant impact for low-income households. Conditional price elasticities indicate that processed fruits and vegetables, fresh fruits and fresh...
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123946

A New Psychological Approach to Dichotomous Choice CVM.
Provedor de dados: 31
Autores: Cook,   Darron M.
This paper considers an alternative approach dichotomous choice contingent valuation (DC), referred to as the dissonance minimising format (DM). This method seeks to reduce the extent of positive bias at the formulation stage of stated preference experiments known as “yea-saying”, in order to gain a more accurate measure of respondent WTP. Both the DC and DM methodologies are applied to the case study of minesite rehabilitation within Victoria, with particular reference to the abandonment of open pits following small-scale gold mining operations. The results presented here indicate that the DM model has considerable promise for reducing yea-saying within dichotomous choice CV. The results also indicate that the community welfare loss associated with...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123795

Factors Affecting Cheese Trade in Asia
Provedor de dados: 31
Autores: Norman,   Ben; Goddard,   Ellen W.
Tipo: Presentation
Palavras-chave: International Relations/Trade; Marketing.
Ano: 1999
URL: http://purl.umn.edu/124094

Accounting for Transaction Costs in Point/Nonpoint Water Quality Trading Programs in the Chesapeake Bay Watershed
Provedor de dados: 31
Autores: Ribaudo,   Marc; McCann,   Laura M.J.
Transaction costs are commonly identified as a major reason why so few point/nonpoint trades have occurred in water quality trading programs.  We examine the transaction costs to buyers and sellers in Pennsylvania's trading program, and compare them to baseline costs.
Tipo: Presentation
Palavras-chave: Transaction costs; Water quality trading; Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/123509

Can fishing tourism improve sustainability of fishing chain?
Provedor de dados: 31
Autores: Lai,   Maria Bonaria.
One environmental event verified during the last years in the Mediterranean sea is that the presence of tropical fishes is causing death of the original fauna. This has attracted the attention of not only the fishermen, but also that of the European Community and all of the associations (public and private) which work to preserve the environment. There are several initiatives to preserve the environment, and the “fermo biologico” is one of these. It tries to solve the Mediterranean fish’s depopulation problem, restricting the fishing in some period of the year. As known, the management of the biological resources is addressed to guarantee the environmental sustainability. This sustainability can be guaranteed by those who work in the fish sector, through...
Tipo: Presentation
Palavras-chave: Fishing tourism; Sustainability; Customer satisfaction; Environmental Economics and Policy.
Ano: 2010
URL: http://purl.umn.edu/119153

La valorizzazione energetica dei residui colturali arborei: applicazione dell’analisi spaziale e valutazione della sostenibilità economica e ambientale
Provedor de dados: 31
Autores: Torquati,   Biancamaria; Marino,   Daniela; Porceddu,   Pier Riccardo.
The use of biomass for energy is one of the promising alternatives identified by the European Union to reduce the greenhouse gases emissions and for the energy supply security. The aim of this research is to analyze the potential production, economic and environmental sustainability of the energy produced from the vineyards and olive orchards pruning at the 4 municipalities of Umbria Region. Geo-spatial, economic and environment analysis have been conducted. The integrated approach was used to estimate the total quantity of biomass produced in that area, identify a logistic network for its transportation and finally based on which a power plant has been suggested. The chain costs and the potential profit margins were also calculated and the resulted CO2...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124382

Corporate and Consumer Social Responsibilities: Label Regulations in the Lab
Provedor de dados: 31
Autores: Etile,   Fabrice; Teyssier,   Sabrina.
Although consumer attitudes toward corporate social responsibility are positive, socially responsible (SR) products are far from gaining significant market shares. Information asymmetries have been identified as one of the factor contributing to this attitude-behaviour gap, because social responsibility is a credence attribute. Signalling may remedy this market failure. We use an experimental posted offer market to investigate the impact of various regulatory requirements for labels on sellers’ choice to supply SR products and to signal it, and on buyers’ choice of ethical quality. Three treatments are tested: label certification by a third-party, “cheap-talk signalling” with random monitoring and with or without reputations. Individual social preferences...
Tipo: Presentation
Palavras-chave: Labels; Social responsibility; Social preferences; Separating equilibrium; Market game; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Marketing; C92; D82; L15; M14.
Ano: 2011
URL: http://purl.umn.edu/120399

Actuarial evaluation of the EU proposed farm income stabilisation tool
Provedor de dados: 31
Autores: Pigeon,   Mathieu; Frahan,   Bruno Henry de; Denuit,   Michel.
Recently, the European Commission proposed to introduce several risk management tools in the rural development pillar 2 of the CAP. One of them consists in providing co-financing support to mutual funds compensating farmers who experience a severe drop in their farm income. This paper analyses this new farm income stabilization tool for the Walloon region in Belgium, considering separately three groups of farms (crop, dairy and cattle farms). Relying on FADN data from 1997 to 2007, this analysis focuses on estimating the probability that such regional mutual funds would need to intervene to compensate farm net incomes and, in that case, the expected amount of each farm income compensation and the total expected amount of compensation. The budgetary...
Tipo: Presentation
Palavras-chave: Agricultural risk management; Income stabilisation; Belgium; European Union; Risk and Uncertainty; D81; Q12; Q18.
Ano: 2012
URL: http://purl.umn.edu/122485

Food for the Future: Opportunities for a Crowded Planet
Provedor de dados: 31
Autores: Fischer,   Tim.
Tipo: Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2002
URL: http://purl.umn.edu/123924

The SURE Program: An Investigation of Moral Hazard Opportunities and Adverse Selection Effects
Provedor de dados: 31
Autores: Bekkerman,   Anton; Smith,   Vincent H.; Watts,   Myles J.
The Supplemental Revenue Assistance Payments (SURE) program, introduced in the 2008 Farm Bill, provides disaster aid payments to producers in counties eligible for disaster payments and individual producers with crop production losses that exceed 50% of their expected yields. We show that the program’s "rules of the game" create moral hazard and adverse selection incentives. Then, we empirically analyze possible moral hazard and adverse selection behavior in response to the SURE program by corn, soybean, and wheat producers. Results suggest that recent increases in crop insurance participation may be due to increased moral hazard and adverse selection incentives.
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/124178

Catastrophic crop insurance effectiveness: does it make a difference how yield losses are conditioned?
Provedor de dados: 31
Autores: Bokusheva,   Raushan; Conradt,   Sarah.
The study evaluates the effectiveness of a catastrophic drought-index insurance developed by applying two alternative methods - the standard regression analysis and the copula approach. Most empirical analyses obtain estimates of the dependence of crop yields on weather by employing linear regression. By doing so, they assume that the sensitivity of yields to weather remains constant over the whole distribution of the weather variable and can be captured by the effect of the weather index on the yield conditional mean. In our study we evaluate, whether the prediction of farm yield losses can be done more accurately by conditioning yields on extreme realisations of a weather index. Therefore, we model the dependence structure between yields and weather by...
Tipo: Presentation
Palavras-chave: Catastrophic insurance; Weather-based insurance; Copula; Risk and Uncertainty; C18; Q14.
Ano: 2012
URL: http://purl.umn.edu/122443

An Information-Theoretic Approach to Modeling Binary Choices: Estimating Willingness to Pay for Recreation Site Attributes
Provedor de dados: 31
Autores: Henry-Osorio,   Miguel; Mittelhammer,   Ronald C.
Information-Theoretic Econometrics
Tipo: Presentation
Palavras-chave: Minimum power divergence; Cressie-Read statistics; Contingent valuation; Empirical likelihood; Discrete choice; Binary response models; Environmental Economics and Policy; Research Methods/ Statistical Methods; C13; C14; C25; Q51.
Ano: 2012
URL: http://purl.umn.edu/123432

Impacts of the U.S.-Central America-Dominican Republic Free Trade Agreement - the Apple Case
Provedor de dados: 31
Autores: Fu,   Shengfei; Epperson,   James E.; Ames,   Glenn C.W.
The U.S.-Central America-Dominican Republic Free Trade Agreement (CAFTA-DR) levels the playing field of trade between the United States and the six CAFTA-DR partner countries. Half of U.S. farm products gain immediate tariff-free access to the markets of the CAFTA-DR region. All Tariffs will be eliminated in 20 years. Under CAFTA-DR, tariffs on an important U.S. fresh fruit export to the region, fresh apples, declined from an initial base of 15%-25% in CAFTA-DR countries to zero immediately upon enforcement. The specific objective of this research is to analyze the impact of tariff elimination under CAFTA-DR on the trade of U.S. fresh apples. Generalized Method of Moments (GMM) is used for the analysis involving an excess-supply-excess-demand model with...
Tipo: Presentation
Palavras-chave: CAFTA-DR; Trade liberalization; Tariff elimination; Generalized Method of Moments (GMM); Agricultural and Food Policy; International Relations/Trade; Q17.
Ano: 2012
URL: http://purl.umn.edu/119782

Economically Optimal Management of Huanglongbing in Florida Citrus
Provedor de dados: 31
Autores: Salifu,   Abdul Wahab; Spreen,   Thomas H.; Grogan,   Kelly A.
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy; Crop Production/Industries; Farm Management; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/124492

Australia Recognises the Needs and the Issues
Provedor de dados: 31
Autores: Gallus,   Chris.
Tipo: Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2002
URL: http://purl.umn.edu/123925

Estrategias competitivas na cadeia produtiva do peixe da regiao de Dourado-MS
Provedor de dados: 31
Autores: De Souza,   Paulo Augusto Ramalho; Sproesser,   Renato Luiz; Campeao,   Patricia; Vilpoux,   Olivier Francois; Ramos,   Gessica Genevieve Lopes.
O presente estudo analisa o comportamento estratégico predominante das empresas que constituem a cadeia produtiva do peixe em Dourados no Estado de Mato Grosso do Sul. A pesquisa também avalia a competitividade sistêmica da cadeia produtiva do peixe a partir do comportamento estratégico de suas empresas constituintes. A metodologia de pesquisa adotada foi o método indutivo por meio de pesquisa exploratória realizada na mesma região, acrescida de revisão bibliográfica, pesquisa em base de dados da SEAP e do IBAMA. A revisão teórica identifica os padrões de comportamento estratégico possível adotado pelos agentes da cadeia. Os resultados encontrados apontam para uma cadeia produtiva ainda em fase de inicial de organização e um comportamento estratégico...
Tipo: Presentation
Palavras-chave: Estratégias Competitivas; Complexo Piscicultura; Arranjo Produtivo; Competitive strategy; Pisciculture complex; Productive arrangement; Livestock Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/119009

Production Effects of Direct Payments to Active Farmers: a Microeconomic Dynamic and Stochastic Analysis
Provedor de dados: 31
Autores: Carpentier,   Alain; Gohin,   Alexandre; Heinzel,   Christoph.
For the 2014-2020 phase of the Common Agricultural Policy, the European Commission has the opportunity to reduce the leakage of public support to landowners and to better target it towards active farmers. Our purpose is to assess whether shifting the basis of direct payments from land towards active farmers will significantly alter agricultural production decisions. In a dynamic and stochastic microeconomic framework, we identify the impact of this shift on the farm household’s production and consumption decisions. In the dynamic setting the production impacts of direct payments are much higher than previously quantified, because the “long run” absolute risk aversion (associated with the value function) is lower than the “short run” one (associated with...
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122447

The Sri Lanka Tea Industry: Economic Issues and Government Policies
Provedor de dados: 31
Autores: Ganewatta,   Gaminda; Edwards,   Geoff W.
In the slowly growing global tea market Lanka has not performed as well relative to its competitors in recent times as it did in the past. Sri Lanka needs to improve the efficiency of its industry to remain competitive in world tea market. Improving efficiency and international competitiveness in the Sri Lanka tea industry requires that the high costs of production, associated with low productivity, be reduced. Tea producers have the main responsibility for this. However, for improving efficiency and achieving international competitiveness, it is necessary that government policies for the tea industry are consistent with correction of market failures. This is not the case at present, with government policies for the tea industry directed partly to...
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy.
Ano: 2000
URL: http://purl.umn.edu/123648

New Age, New Learners, New Skills: What Skills Do Graduates Need to Succeed in the New Economy?
Provedor de dados: 31
Autores: Noel,   Jay E.; Qenani,   Eivis.
The goal of this study was to improve the current understanding of labor market demands for various skills and attributes of college graduates. Changes such as globalization, technological advancements and the emergence of the knowledge economy have caused educational institutions to focus their attention in revising and redesigning their curriculum. The timely identification and the effective response to these changes requires that higher education revisits the issue of the set of skills essential to the economy and the labor market, and the best ways to transfer them to college graduates.  A choice-based conjoint experiment was used to identify labor market preferences for college graduate attributes. A web survey with employers in the food and fiber...
Tipo: Presentation
Palavras-chave: Graduate Attributes; Creativity; Hierarchical Bayesian; Conjoint Analysis; Agribusiness; Institutional and Behavioral Economics; Labor and Human Capital; Teaching/Communication/Extension/Profession.
Ano: 2012
URL: http://purl.umn.edu/123948

Food prices and food security in CARICOM - The case of Trinidad and Tobago
Provedor de dados: 31
Autores: Mohammed,   Aziz.
Bridgetown, Barbados 6th – 10th July, 2009
Tipo: Presentation
Palavras-chave: Food Prices; Food Security; Trinidad and Tobago; Transformation Plan; Agricultural and Food Policy; Q18.
Ano: 2010
URL: http://purl.umn.edu/122661

Fuel for Thought
Provedor de dados: 31
Autores: De Mello Barreto,   Fernando.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/124493

Measuring Risk Attitude and Relation to Marketing Behavior
Provedor de dados: 31
Autores: Franken,   Jason R.V.; Pennings,   Joost M.E.; Garcia,   Philip.
Researchers employ various measures of risk attitudes to investigate their relation to market behavior with mixed results. We find that a higher-order global risk attitude construct, developed using survey scales and experiments based on expected utility theory, is related to several marketing alternatives, but does not exhibit substantially greater explanatory power than underlying measures. With few exceptions, scales yield greater significance of risk attitudes for these choices, but experimental measures reveal other insights, e.g., differential attitudes in gain and loss domains. Given recent concerns with experimental measures in the literature, we suggest studies include scales as a low cost supplemental measure.
Tipo: Presentation
Palavras-chave: Risk behavior; Risk attitude; Futures and options; Forward contracts; Marketing contracts; Marketing; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/124471

Factors Affecting Feeder Cattle Prices in Internet Sales
Provedor de dados: 31
Autores: Burdine,   Kenneth H.; Maynard,   Leigh J.; Halich,   Greg.
Tipo: Presentation
Palavras-chave: Demand and Price Analysis; Marketing; Teaching/Communication/Extension/Profession.
Ano: 2012
URL: http://purl.umn.edu/124187

Credit Constraint and Non-separable Behavior of Rural Households — Evidence from China
Provedor de dados: 31
Autores: Zhao,   Jianmei; Zhang,   Jun.
This article addresses the separability issue in the context of Chinese rural households. Deviating from previous research, our test on separability is embedded in the capital market imperfections and from the perspective of farm living consumption and their production inputs. Our theoretical framework incorporates the credit constraint and predicts both separability and non-separability behavior from rural households. Empirical estimation presents the evidence of non-separability behavior for credit constrained farm families, while independent decisions on farm living consumption and their production inputs exist among unconstrained households. Our overall results reject the separability for financially constraint farm households in China.
Tipo: Presentation
Palavras-chave: Credit constraint; Non-separable behavior; Switching regression; Agricultural Finance; Consumer/Household Economics; Q12; Q14; O18.
Ano: 2012
URL: http://purl.umn.edu/123950

National Conference on Irrigation for Food Security Voluume 1; Proceedings on Water, Food Security and Climate Change in Sri Lanka, EMICH, Colombo, June 9-11, 2009
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Food security; Climate change; River basins; Water shortage; Irrigated farming; Water quality; Tanks; Aquatic plants; Rice; Food insecurity; Water resource management; Zero tillage; Weed control; Agroforestry; Canals; Surface runoff; Remote sensing; Agricultural and Food Policy; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Livestock Production/Industries; Resource /Energy Economics and Policy.
Ano: 2010
URL: http://purl.umn.edu/118419

Life cycle assessment of milk production systems in south Queensland
Provedor de dados: 31
Autores: Hamilton,   Amanda; Wegener,   Malcolm K.; Dart,   Peter; Silvey,   Bill.
Australian dairyfarmers are efficient by world standards and average farm production has expanded significantly in recent years. This has been achieved through increased use of land for grazing, better pasture and nutritional management, increased use of machinery, agricultural chemicals, and irrigation. Milk yields per cow have increased substantially. With the expansion of milk production, there has been increasing pressure on the environment surrounding dairyfarms. In addition, farms are often located in areas with aesthetic environments that are frequently visited by non-farming members of the community and farms may be located in catchments that feed water into storage areas for potable water supplies for urban areas. Dairy farms therefore rate highly...
Tipo: Presentation
Palavras-chave: Livestock Production/Industries; Production Economics.
Ano: 2000
URL: http://purl.umn.edu/123658

Can One Size Fit All? An Analysis of CARICOM Agricultural Development Policy Formulation
Provedor de dados: 31
Autores: Gordon,   Ronald M.; VanSickle,   John J.; Davis,   Carlton George.
Belize City, Belize 23rd - 27th July, 2007
Tipo: Presentation
Palavras-chave: CARICOM; Agricultural policy; Institutional framework; Food security; Agribusiness; Q18.
Ano: 2009
URL: http://purl.umn.edu/122887

Valuation of Carbon Forestry and the New Zealand Emissions Trading Scheme: A Real Options Approach Using the Binomial Tree Method
Provedor de dados: 31
Autores: Tee,   James; Scarpa,   Riccardo; Marsh,   Dan; Guthrie,   Graeme.
Under the New Zealand Emissions Trading Scheme, new forests planted on/after 1st January 1990 can earn carbon credits. These credits have to be repaid upon forest harvest. This paper analyses the effects of this carbon scheme on the valuation of bareland, on which radiata pine is to be planted. NPV/LEV and Real Options methods are employed, assuming stochastic timber and carbon prices. Valuation increases significantly and rotation age is likely to be lengthened. We include a scenario analysis of potential implications of rotation age lengthening on carbon stock management in New Zealand.
Tipo: Presentation
Palavras-chave: Emissions Trading Scheme (ETS); Climate change policy; Kyoto Protocol; Real options; Carbon forestry; Tradable permit; Demand and Price Analysis; Environmental Economics and Policy; Land Economics/Use; Resource /Energy Economics and Policy; Risk and Uncertainty; Q23; Q28; Q54.
Ano: 2012
URL: http://purl.umn.edu/123665

ASSESSING A PROVISION GAME FOR TWO UNITS OF A PUBLIC GOOD, WITH DIFFERENT GROUP ARRANGEMENTS, MARGINAL BENEFITS, AND REBATE RULES: EXPERIMENTAL EVIDENCE
Provedor de dados: 31
Autores: Liu,   Pengfei; Swallow,   Stephen K.; Anderson,   Christopher M.
We design two institutions that collect individual contributions to provide multiple public good units, inspired by a problem to deliver ecosystem services as a step-level public good (delivered in discrete increments). We set up a public good experiment wherein either all individuals for one group and are responsible for providing the two units (aggregated-group approach), or two groups provide one unit separately, but both group benefits if any unit is provided (disaggregated-group approach). Our interest is to test which of these two institutions performs “better” through the collective decision process. Our results show that, in general, the aggregated-group has a higher rate of success delivering at least one unit of the public good, while the...
Tipo: Presentation
Palavras-chave: Experimental Economics; Environmental and Nonmarket Valuation; Institutional and Behavioral Economics; Public Economics; G91; G92; H41.
Ano: 2012
URL: http://purl.umn.edu/123205

Impacts of the U.S.-Central America-Dominican Republic Free Trade Agreement (CAFTA-DR) on U.S. Fruit Exports - the Apple Case
Provedor de dados: 31
Autores: Fu,   Shengfei; Epperson,   James E.; Ames,   Glenn C.W.
The U.S.-Central America-Dominican Republic Free Trade Agreement (CAFTA-DR) levels the playing field of trade between the United States and the six CAFTA-DR partner countries. Half of U.S. farm products gain immediate tariff-free access to the markets of the CAFTA-DR region. All Tariffs will be eliminated in 20 years. Under CAFTA-DR, tariffs on an important U.S. fresh fruit export to the region, fresh apples, declined from an initial base of 15%-25% in CAFTA-DR countries to zero immediately upon enforcement. The specific objective of this research is to analyze the impact of tariff elimination under CAFTA-DR on the trade of U.S. fresh apples. Generalized Method of Moments (GMM) is used for the analysis involving an excess-supply-excess-demand model with...
Tipo: Presentation
Palavras-chave: CAFTA-DR; Trade liberalization; Tariff elimination; Generalized Method of Moments(GMM); Agricultural and Food Policy; International Relations/Trade; Q17; F13; F15.
Ano: 2012
URL: http://purl.umn.edu/119783

Pre- and post-accession performance to the WTO: A vulnerability study of Jamaica’s beef industry
Provedor de dados: 31
Autores: Seepersad,   Govind; Felix,   Nkosi; Maharaj,   Omardath.
Bridgetown, Barbados 6th – 10th July, 2009
Tipo: Presentation
Palavras-chave: WTO; Jamaica; Beef Industry; Vulnerability Index; Agribusiness; Q13.
Ano: 2010
URL: http://purl.umn.edu/122658

The Role of Institutions in Policy Making
Provedor de dados: 31
Autores: Johnson,   Robin.
There has developed in recent years some concern about the effectiveness of government policy, especially concerning its implementation and the agencies responsible for it. Institutional economics and transaction cost economics provide a number of pointers to the evaluation of past policy aims which appear pertinent. More broadly, the paper pleads for wider application of the structure/conduct/performance paradigm to given policy implementation. Some case studies are discussed and suggestions made for future application.
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 1999
URL: http://purl.umn.edu/123822

Impact of irrigation on poverty and environment in Ethiopia. Draft Proceeding of the Symposium and Exhibition held at Ghion Hotel, Addis Ababa, Ethiopia 27th -29th November, 2007
Provedor de dados: 31
Autores: Awulachew,   Seleshi Bekele; Loulseged,   Makonnen; Yilma,   Aster Denekew.
Tipo: Presentation
Palavras-chave: Poverty; Crop management; Irrigated farming; Rainfed farming; Irrigation systems; Food security; Water harvesting; Institutions; Environmental effects; Public health; Malaria; GIS; Remote sensing; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Health Economics and Policy; Institutional and Behavioral Economics; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/118410

Carbon Labeling for Consumer Food Goods
Provedor de dados: 31
Autores: Shewmake,   Sharon; Okrent,   Abigail M.; Thabrew,   Lanka; Vandenbergh,   Michael.
We construct a model to predict how consumers will respond to better information about the carbon content of 42 foods and a nonfood composite as well as product categories through a label, and provide guidance as to what kinds of goods would provide the highest CO¬2eq emission reductions through a labeling scheme.   Our model assumes that consumers value their individual carbon footprint, allowing us to utilize estimates of own- and cross-price elasticities of demand from the literature on demand analysis. We make three different assumptions about how consumers currently value their carbon footprint and find that when a label informs consumers, their baseline perception matters.  We also find that carbon labels on alcohol and meat would achieve the largest...
Tipo: Presentation
Palavras-chave: Carbon emissions; Food labeling; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Environmental Economics and Policy; Resource /Energy Economics and Policy; Q53; D83; Q18.
Ano: 2012
URL: http://purl.umn.edu/124369

A MODEL FOR THE APPRAISAL OF THE ENVIRONMENTAL IMPACTS OF THE PROJECTS
Provedor de dados: 31
Autores: Soliman,   Ibrahim.
Social Appraisal of Agricultural Projects
Tipo: Presentation
Palavras-chave: Direct cost; External costs; External benefits; Net present value; Sensitivity analysis; Environmental Economics and Policy; Health Economics and Policy; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 1995
URL: http://purl.umn.edu/119883

Analysis of Commodity Program Adjustments for U.S. Rice in Stochastic Framework
Provedor de dados: 31
Autores: Chavez,   Eddie C.; Wailes,   Eric J.
Potential adjustments in U.S. commodity program for rice are evaluated in this paper using stochastic analysis in a global modeling framework. Corresponding threshold and loss-compensatory increases in target price and loan rates are determined with assumed outright and gradual elimination of direct payments. Results show that if direct payments (DP) are eliminated in 2012, a 23% increase in both the target price (TP) and loan rate (LR) triggers counter-cyclical payments (CCP) 80% of the time; and it will take an increase of 48% in TP and LR to generate CCP enough to compensate for the loss in total DP. If DP is gradually removed over 5 years, the trigger and compensatory increases in TP and LR are 41% and 46%, respectively. Furthermore, if DP is...
Tipo: Presentation
Palavras-chave: U.S. commodity program; Threshold and loss-compensatory increases; Stochastic analysis; Agricultural and Food Policy; Crop Production/Industries; Q18.
Ano: 2012
URL: http://purl.umn.edu/119754

Effect of Menu Labeling on Caloric Intake and Restaurant Revenue in Full-Service Restaurants
Provedor de dados: 31
Autores: Ellison,   Brenna D.; Lusk,   Jayson L.; Davis,   David W.
Paper removed at the request of the author.
Tipo: Presentation
Palavras-chave: Menu labeling; Numeric and symbolic calorie labels; Restaurant revenue; Full service restaurant; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Institutional and Behavioral Economics; Q19; I18.
Ano: 2012
URL: http://purl.umn.edu/123325

Estimating the public benefits of mitigating damages caused by invasive plant species in a subsistence economy
Provedor de dados: 31
Autores: Rai,   Rajesh Kumar; Scarborough,   Helen.
This paper presents analysis of a choice experiment (CE) designed to estimate willingness-topay (WTP) to mitigate damages caused by invasive plant species (IPS) in a rural community of Nepal. In order to address the cash constraints problem in a subsistence economy, two payment attributes, labor contribution and membership fee, were included in the choice sets. The results reveal that rural farmers have significant WTP for forest management activities, in terms of both cash and labor contributions. The results also suggest that rural farmers value their time in this context at a different rate to the current wage rate.
Tipo: Presentation
Palavras-chave: Choice experiments; Invasive plant species; Rural communities; Developing countries.; Crop Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124421

The agri-food and other bio-based sectors in Spain. A description based on multiplier analysis
Provedor de dados: 31
Autores: Ferrari,   Emanuele; Cardenete,   Manuel Alejandro; Boulanger,   Pierre; Delgado,   M.C.; M'Barek,   Robert.
The turnover of the EU agri-food sector overtops 2,000 billion Euros a year and employs roughly 22 millions workers. The focus of this paper is on the sectors directly linked to agricultural production and the food industry. Having a comprehensive understanding of extended agri-food economic linkages is critical when designing pertinent policies to deliver the full potential of strong EU agri-food and other bio-based sectors. A more disaggregated view is required. This study stars from a Social Accounting Matrices (SAM) for Spain with a highly disaggregated agricultural sector (AgroSAMs) for the year 2000. This study uses the AgroSAMs in its entire disaggregation, in order to provide a descriptive analysis of the agri-food and bio-based sectors. The limits...
Tipo: Presentation
Palavras-chave: Agriculture; Food; Multiplier; Key sector; Spain; Agribusiness; C67; Q10.
Ano: 2012
URL: http://purl.umn.edu/124384

Valuing Beach Recreation Across a Regional Area: The Great Barrier Reef in Australia
Provedor de dados: 31
Autores: Rolfe,   John; Gregg,   Daniel.
The focus of the research reported in this paper has been to estimate recreation values for beaches over approximately 1400 kilometres of coastline along the Queensland coast. The study is notable at an international level because it assesses recreation values to a general type of recreation asset rather than to a specific site, and because it focuses on the values of the local resident population. Negative binomial models have been used to estimate both the visit rate and recreation values associated with beach visits in different regional areas. The value of a single beach visit was estimated per person at $35.09, which extrapolates to $450 million in beach recreation values per annum. These values are likely to be conservative because opportunity costs...
Tipo: Presentation
Palavras-chave: Recreation; Travel Cost Method; Beach; Contingent behaviour; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124433

AT-HOME SEAFOOD CONSUMPTION IN KENTUCKY: A DOUBLE-HURDLE MODEL APPROACH
Provedor de dados: 31
Autores: Wan,   Wei; Hu,   Wuyang.
This study investigates demographic and socioeconomic factors contributing to at-home consumption of seafood in Kentucky through a 2010 survey. The Tobit and Cragg’s double-hurdle model are analyzed and tested. Numbers of people in the household, household income, race and employment status are significant determinants of at-home seafood consumption in Kentucky.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety; Seafood consumption; At-home; Kentucky; Double-Hurdle Model.
Ano: 2012
URL: http://purl.umn.edu/119807

A MODEL FOR THE APPRAISAL OF THE ENVIRONMENTAL IMPACTS OF THE PROJECTS
Provedor de dados: 31
Autores: Soliman,   Ibrahim.
Social Appraisal of Agricultural Projects
Tipo: Presentation
Palavras-chave: Direct costs; Direct Benefits. External costs; External Benefits; Net Present Value; Sensitivity Analysis; Environmental Economics and Policy; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 1995
URL: http://purl.umn.edu/208995

Are Tomato-Spotted Wilt Virus Management Tactics Good Enough?
Provedor de dados: 31
Autores: Awondo,   Sebastain Nde; Fonsah,   Esendugue Greg; Riley,   David G.
Management of tomato-spotted wilt virus is complex and requires more than one treatment for near optimum results. We investigated tomato and pepper growers’ perception on the effectiveness of tactics using Bayesian Logistic regression. The perceived chance that each tactics will control the disease was about a coin toss.
Tipo: Presentation
Palavras-chave: Tomato-spotted wilt virus; Pest and disease management; Bayesian logistic regression; Agricultural and Food Policy; Crop Production/Industries; Farm Management; Food Security and Poverty; Production Economics; Research and Development/Tech Change/Emerging Technologies; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/119790

Economic Feasibility of Bio-Butanol on Marginal Agricultural Lands in Western Colorado
Provedor de dados: 31
Autores: Keske,   Catherine M.; Brandess,   Andrew; Hoag,   Dana L.; Pearson,   Calvin.
As is the case with most rural agricultural communities, western Colorado is dependent on fossil fuels transported from distant sources. This results in vulnerability to fuel supply disruptions and price shocks (Ederington et al., 2011; Yu, Wang, and Lai, 2008). A predictable and locally derived fuel source may provide stability to the agricultural production supply chain as well as to local commerce (Tareen, Wetzstein, and Duffield , 2000; Western Organization of Research Counsels, 2009). This research project evaluates the economic feasibility of bio-butanol as a locally grown biofuel in western Colorado as a means to encourage farm-level and regional energy sovereignty.
Tipo: Presentation
Palavras-chave: Biobutanol; Biofuels; Marginal Lands; Western Colorado; Agribusiness; Agricultural and Food Policy.
Ano: 2012
URL: http://purl.umn.edu/124047

Cost-Benefit Analysis of American Foulbrood (AFB) Disease Management Options in Queensland – Preliminary Results
Provedor de dados: 31
Autores: Jarratt,   Ian S.; Franco-Dixon,   Mary Ann.
American Foulbrood disease (AFB) is a bacterial disease of honey bees which causes significant economic losses in Queensland and other Australian states and many other countries, including New Zealand. This study:  reviews several previous applications of Cost-Benefit Analysis (CBA) to AFB control/eradication programs  presents preliminary results from the use of CBA to assess a range of alternatives to the present AFB control program in Queensland.
Tipo: Presentation
Palavras-chave: American Foulbrood Disease (AFB); Cost-Benefit Analysis; Agribusiness.
Ano: 1999
URL: http://purl.umn.edu/123819

Price volatility on the German Agricultural Markets
Provedor de dados: 31
Autores: Ledebur,   Oliver von; Schmitz,   Jochen.
In this contribution, the development of price volatility on German agricultural markets is analyzed. We quantify the degree of price volatility for selected German agricultural markets and determine how it evolves over time and search for policy driven structural changes in volatility levels measured by the historical volatility. Based on annualised historical volatilities t test were performed to identify if the change in the volatility levels show any relationship to the process of reform of the CAP. An increase in volatility could be identified for the main German markets regulated by the Common Market Organisations. A positive relationship among the reform process of the CAP and the changes of the volatility levels could be identified particularly for...
Tipo: Presentation
Palavras-chave: Volatility; German agricultural markets; Agricultural policy; Risk and Uncertainty; Q11; Q13; Q18.
Ano: 2012
URL: http://purl.umn.edu/122534

Quality Responses to Agricultural Policies
Provedor de dados: 31
Autores: James,   Jennifer S.
Most policy analyses are conducted using a model of a single market for a homogenous commodity. Usually, the commodity of interest is not truley homogenous, but is treated as such for the sake of simplicity. In doing so, analysts are implicitly assuming that a single-market model of a homogeneous product closely approximates true policy effects. This paper explores the implications of this assumption. The effects of the homogeneity assumption are shown for the simple case of a product available in two qualities, when market-distorting policies are introduced. It is shown that, for plausible parameter values, ignoring quality responses can have substantial impacts on the estimated welafare effects of stereotypical commodity price support policies. In...
Tipo: Presentation
Palavras-chave: Agribusiness; Public Economics.
Ano: 2000
URL: http://purl.umn.edu/123668

What Now and What Next for Global Biofuel Technologies?
Provedor de dados: 31
Autores: Schuck,   Stephen.
This paper provides an overview of first- and second- generation biofuels. First-generation biofuels are ethanol-derived from food crops such as grains and sugar cane, and biodiesel, which use feedstocks of vegetable oils and animal fats. The technologies for manufacturing first-generation biofuels are generally mature and are commercially available. It is also noted that biogas is gaining favour in countries such as Sweden, where it currently accounts for about half the vehicle gas use. The focus of the paper then shifts to consider alternative processing paths under development, using non-food crops and agricultural and forestry residues. The two major pathways are: Biochemical — conversion of cellulose and hemicellulose to sugars and their fermentation...
Tipo: Presentation
Palavras-chave: Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/124489

A Role for Australia: Contributions and Benefit
Provedor de dados: 31
Autores: Butler,   R.J.; Biddle,   R.R.; Murray,   James Gardner.
This paper summarises Australia’s contributions to the global animal disease control effort, from the perspective of the Department of Agriculture, Fisheries and Forestry – Australia (AFFA). AFFA’s objectives in the context of animal health and welfare, and veterinary public health, include minimising the impact of pests, diseases and contaminants, managing emergencies, facilitating the development of national policies and strategies, and advancing Australia’s trade interests. A result of such objectives has been the establishment of a strong international program within AFFA. The program has the advantages of collaboration with other countries on animal health matters, including that of aquatic animals, as well as progressing Australia’s trading...
Tipo: Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 2003
URL: http://purl.umn.edu/124022

Net Taxpayer Cost of WIC Infant Formula
Provedor de dados: 31
Autores: Levedahl,   J. William; Reed,   Albert J.
This paper combines expressions for infant formula retail price flexibilities of the contract brand with respect to the rebate and participant demand presented by Reed and Levedahl (2012)with historical data on rebates and participant demand to calculate how the magnitude of net taxpayer costs has been affected by changes in rebates and participant demand. These results are used to compare the relative impact of these variables on the net cost to taxpayers of WIC infant formula and to evaluate how effective sole-source contracts have been at containing taxpayer costs.
Tipo: Presentation
Palavras-chave: Cost containment; Infant formula rebates; WIC participant demand; Sole-source contracts; Agricultural and Food Policy; Public Economics; Q11; Q18.
Ano: 2012
URL: http://purl.umn.edu/124073

Have policy and market shifts made agricultural commodity prices more or less volatile? Yes!
Provedor de dados: 31
Autores: Meyer,   Seth D.
Plenary presentation from 123rd EAAE Seminar, 23-24 February, Dublin, Ireland
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122776

Taking Account of Animal Ethics and Welfare
Provedor de dados: 31
Autores: Blackshaw,   Judith K.
Animal ethics and welfare, the model codes of practice for the welfare of animals and the bureaucracy which is necessary to make the codes work, are an indulgence of wealthy, developed countries. In many developing countries the main concern of people is their day-to-day survival with little concern for long-term ecological implications or animal welfare issues. Unfortunately many aid programs have been a waste of money with many layers of expensive bureaucracy, and recently organisations have been forced to reconsider their position on the livestock industries in developing countries. Working with the farmers and their indigenous stock, progress can be made with seemingly simple strategies. Just the system of feeding poultry each day and confining them...
Tipo: Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 2003
URL: http://purl.umn.edu/124020

A multi-period positive mathematical programming approach for assessing economic impact of drought in the Murray-Darling Basin, Australia
Provedor de dados: 31
Autores: Qureshi,   Muhammad Ejaz; Ahmad,   Mobin-ud-Din; Whitten,   Stuart M.; Kirby,   Mac.
In the last decade, the Murray-Darling Basin (MDB), Australia faced a severe drought which affected its agriculture production. Sustainable diversion limits as proposed in the Australian Government’s basin plan together with climate change is expected to impact on future agriculture production and development in the MDB. We developed a biophysical-economic mathematical model calibrated against the observed multi-period land use data utilising the positive mathematical programming (PMP) approach to evaluate the impacts on agricultural production activities of a range of climate events and policy options. This is an extension of our previous work where the model was calibrated against a single year and focus was on the southern MDB only. The multi-period...
Tipo: Presentation
Palavras-chave: Integrated hydrology and economic model; Multi-period calibration; Climate change; Drought; Agriculture; Positive mathematical programming; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124418

Recent Trends in New Zealand Agricultural Productivity and its Measurement
Provedor de dados: 31
Autores: Forbes,   Rod; Johnson,   Robin.
This paper updates the results of an earlier paper (Johnson 1996) exploring productivity trends 1972-92 prepared for the OECD. Tornqvist indexes are used to compensate for changes in the mix of outputs and inputs. Capital is charged at service prices. Present indications are that labour and capital inputs have not increased in the last ten years but total factor productivity has increased at the rate of around 4 per cent per year reflecting past investments and adaptation to new challenges. Comparisons are made with indexes based on static factor shares and suggestions are made on the construction of more ideal index numbers for measuring productivity change where the data is available.
Tipo: Presentation
Palavras-chave: Productivity Analysis.
Ano: 2000
URL: http://purl.umn.edu/123646

Spatial Price Competition in the Non-Alcoholic Beverage Industry in the United States
Provedor de dados: 31
Autores: Dharmasena,   Senarath; Capps,   Oral, Jr.
this is a poster
Tipo: Presentation
Palavras-chave: Non-alcoholic beverages; Spatial price competition; Nielsen data; Demand and Price Analysis; Industrial Organization; Marketing; C21; D11; L11.
Ano: 2012
URL: http://purl.umn.edu/124255

Economic Potential for Nutritional Improvement in Feed Grains
Provedor de dados: 31
Autores: Brennan,   John P.; Singh,   Rajinder Pal; Bialowas,   Adam.
Feed grains researchers have abundant technical opportunities to select various options for improvement of nutritional characteristics of feed grains. Choosing between those opportunities is a difficult issue for research funding organisations. In this paper, efforts to address the relative economic benefits from the different options for feed grains nutritional improvement are reported. The economic benefits arising from nutritional improvements in various feed grains are examined and compared to the benefits from increasing yields of the feed grains rather than improving their nutritional value. The results of the analysis of these options are presented in an economic surplus framework that enables the major beneficiaries and the relative gains for the...
Tipo: Presentation
Palavras-chave: Research; Feed grain; Nutrition; Value; Crop Production/Industries; Food Consumption/Nutrition/Food Safety.
Ano: 2000
URL: http://purl.umn.edu/123608

Limited Food Access as an Equilibrium Outcome: An Empirical Analysis
Provedor de dados: 31
Autores: Bonanno,   Alessandro; Chenarides,   Lauren; Goetz,   Stephan J.
Lack of access to nutritious and affordable food has become an important public policy issue in the U.S.: various interest groups are seeking to reverse a trend whereby certain areas lack larger, full-service grocery stores that provide “higher” quality foods. Based on game-theoretic findings suggesting that lack of food access can be an equilibrium outcome, we specify a model relating access to higher quality food stores to a vector of supply and demand factors, using seven years of county-level data for the contiguous U.S., and a constrained generalized ordered logit estimator. Our results suggest that demand side factors, especially market size (total income and SNAP funds) play an important role in determining food access, and that large food stores...
Tipo: Presentation
Palavras-chave: Food Access; Equilibrium; Food-Store Density; Food Consumption/Nutrition/Food Safety; Q18; R3; L81.
Ano: 2012
URL: http://purl.umn.edu/123196

Valutazione tecnico-economica delle potenzialità di riutilizzo irriguo dei reflui depurati: il caso della Valpadana
Provedor de dados: 31
Autores: Zucaro,   Raffaella; Rago,   C.; Vollaro,   Michele.
Gli effetti dei cambiamenti climatici (CC), sebbene soltanto vagamente ipotizzati qualche decennio fa, hanno cominciato a manifestarsi negli ultimi anni facendo emergere la vulnerabilità soprattutto del settore agricolo. Mentre le indicazioni politiche internazionali promuovono azioni congiunte di lungo periodo volte all’adozione di misure di mitigazione dei CC (riduzione dei gas serra), non sono ancora state chiaramente definite efficaci misure di adattamento di breve periodo, soprattutto per le problematiche connesse alla scarsità idrica. Questo lavoro contribuisce al dibattito in corso sulla politica di adattamento ai CC nel settore agricolo italiano nel contesto sia della pianificazione della Politica Agricola Comune nel periodo 2014-2020 sia...
Tipo: Presentation
Palavras-chave: Cambiamento climatico; Scarsità idrica; Stabilità dei mercati agricoli; Analisi multicriteriale; Analisi costi-benefici; Resource /Energy Economics and Policy; Q15; Q18; Q25; Q34; Q38; Q51; R52.
Ano: 2012
URL: http://purl.umn.edu/124115

An Assessment of Consumer Satisfaction for Food Retail Chains: A Case Study from Turkey
Provedor de dados: 31
Autores: Akpinar,   Goksel; Gul,   Mevlut; Gulcan,   Sinem.
Consumer oriented marketing concept appeared to be effective in accordance to the shift from the traditional marketing approach to the modern marketing approach. This process brings about the concept of customer value in retail food sector as it is the case in other sectors. The rise in number and variety of shopping units that operate in the retail market drives firms into value based marketing concept. Due to the positive effect on the relationship between customer value and customer satisfaction, measuring customer satisfaction in order to increase customer value in sector has gained importance. This study is focuses on determination of satisfaction level of customers who make shopping in local and national supermarket chains operating in retail food...
Tipo: Presentation
Palavras-chave: Food Retailing; Supermarket; Consumer Satisfaction; Turkey; Agribusiness; Agricultural and Food Policy; Farm Management; Food Consumption/Nutrition/Food Safety; International Development; International Relations/Trade.
Ano: 2011
URL: http://purl.umn.edu/121995

Receiving incorrect information is costly: Diffusion and accuracy of market information among farmers in northern Ghana
Provedor de dados: 31
Autores: Zanello,   Giacomo; Shankar,   Bhavani; Srinivasan,   Chittur S.
The recent adoption of Information Communication Technologies (ICTs, namely mobile phones and radios) in rural areas of Sub- Saharan Africa has brought new evidence that an updated and reliable flow of information can have direct benefits for farmers' welfare. However, if correct market information can benefit the users, incorrect information can be costly. In this study we explore the diffusion (quantity) and the accuracy (quality) of price information among farmers in northern Ghana, with a focus on the role of ICTs.
Tipo: Presentation
Palavras-chave: Market behaviour; Transaction costs; Information technologies; Consumer/Household Economics; International Development; Marketing; Research and Development/Tech Change/Emerging Technologies; D82; D83; D84; O12; O55.
Ano: 2012
URL: http://purl.umn.edu/123967

Feasibility of the Income Stabilisation Tool in Finland
Provedor de dados: 31
Autores: Liesivaara,   Petri; Myyra,   Sami; Jaakkola,   Antti.
Whole-farm income insurances are promoted in the new post-2013 Common Agricultural Policy (CAP). The current Crop Damage Compensation (CDC) scheme in Finland covers crop failure for farmers who have suffered losses and applied for the payments. This paper analyses the use of the Income Stabilisation Tool (IST) and compares it to the current CDC scheme in Finland. The Finnish Farm Accountancy Data Network (FADN) is used to simulate the costs of IST compensation payments. Special attention is paid to pig farms and their possibilities to manipulate the IST. Results show that the IST is triggered with a high frequency on Finnish farms. The IST would be more costly than the current CDC programme. The results also suggest that the IST would act as an income...
Tipo: Presentation
Palavras-chave: Income stabilization tool; Moral hazard; Farm Accountancy Data Network; Farm Management; Risk and Uncertainty; Q14.
Ano: 2012
URL: http://purl.umn.edu/122537

Grocery Purchases of WIC and SNAP Recipients: Quantifying the Effect of a Prescriptive Program Design
Provedor de dados: 31
Autores: Tripp,   Amanda S.; Henderson,   Kathryn E.; Andreyeva,   Tatiana.
Paper withdrawn at the request of the authors.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123514

Do Analysts’ Earnings Per Share Forecasts Contain Valuable Information Beyond One Quarter? The Case of Publicly Traded Agribusiness Firms
Provedor de dados: 31
Autores: Lewis,   Daniel; Manfredo,   Mark R.; Sanders,   Dwight R.; Scott,   Winifred.
Analysts’ forecasting of earnings per share for multiple quarter time horizons of eleven agribusiness companies is evaluated using a mean absolute scaled error and a direct test.   Results illustrate that unique information is consistently found.  Rational and efficient expectations are formed periodically.  Analysts’ performance declines as the time horizon increases.
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural Finance; Industrial Organization.
Ano: 2012
URL: http://purl.umn.edu/124480

Macro-Micro Linkages and Rural Livelihood Improvements in Africa
Provedor de dados: 31
Autores: Mapila,   Mariam A.T.J.; Kirsten,   Johann F.; Meyer,   Ferdinand H.
This study develops a multi-equation partial equilibrium model of the Malawi maize market which is linked sequentially to a local maize economy to show that the skepticism surrounding the use of innovation systems in agricultural research in Africa is not unfounded.  The results demonstrate that participating households have the potential to be negatively affected by greater linkages with the market given policy shocks. Therefore in order for the innovation systems perspective in agricultural research to be effective in sustaining robust livelihoods in Africa and to ensure sustainable utilization of natural resources; interventions must be implemented only after systematic analysis of the potential consequences of the resultant macro-micro linkages; thus...
Tipo: Presentation
Palavras-chave: Agricultural policy modeling; Agricultural Innovation Systems; Macro-micro approach; Agricultural and Food Policy.
Ano: 2012
URL: http://purl.umn.edu/123641

The 2007 emerging corn price surge revisited – Was it expected or a large surprise?
Provedor de dados: 31
Autores: Schmitz,   Jochen; Ledebur,   Oliver von.
Point forecasts are a common method to classify uncertain future outcomes. In the option price literature the concept of implied volatility is well known. This concept is used to get a forward looking indicator about the future volatility. Nowadays market expectations can be extracted in numerous ways. One of the first articles regarding this topic in the area of exchange rates and interest rates was Sölderlind and Svensson (1997). Extracting market expectations is not only focused on point forecasts. A more ambitious approach is to extract the whole possible range of market expectations out of option prices. This concept is called risk-neutral density (RND). Most agricultural markets undergo some remarkable price movements in the last 4 years. The reasons...
Tipo: Presentation
Palavras-chave: Risk neutral density; Market expectations; Futures prices; Corn market; Agricultural Finance; Financial Economics; Political Economy; Research Methods/ Statistical Methods; Q14; C53; C58; G17.
Ano: 2012
URL: http://purl.umn.edu/123971

Stated preference surveys of remnant native vegetation conservation
Provedor de dados: 31
Autores: Lockwood,   Michael; Carberry,   David.
Improving the conservation status of remnant native vegetation on private property (RNV) has a number of economic benefits. RNV can contribute to on-farm productivity through provision of unimproved grazing, timber products and stock shelter. It may contribute to enhancing the productivity of downstream properties though amelioration of land degradation associated with salinity, water quality decline and soil erosion. The Australian community might also place value on certain attributes of RNV such as its scenic amenity and contribution to biodiversity conservation. Where these community values can be expressed in terms of trade-offs between RNV conservation and other things of value such as personal disposable income, they can be assessed using economic...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123831

DETERMINANTS OF AGRICULTURAL LAND ABANDONMENT IN POSTSOVIET EUROPEAN RUSSIA
Provedor de dados: 31
Autores: Prishchepov,   Alexander V.; Radeloff,   Volker C.; Muller,   Daniel; Dubinin,   Maxim; Baumann,   Matthias.
Socio-economic and institutional changes may accelerate the rates and determinants of land-use and land-cover change (LULCC). Our goal was to explore the determinants of agricultural land abandonment in post-soviet Russia during the first decade of transition from-state command to market driven economy from 1990 to 2000. Based on economic assumptions of the profit maximization we selected and analyzed the determinants of agricultural land abandonment for one large agro-climatic and economic region of European Russia that covered 150,500 km2 and 67 districts in Kaluga, Rjazan, Smolensk, Tula and Vladimir provinces. We integrated maps of abandoned agricultural land (five Landsat TM/ETM+ footprints 185*185 km each with 30-m resolution), environmental and...
Tipo: Presentation
Palavras-chave: Land Economics/Use.
Ano: 2011
URL: http://purl.umn.edu/120390

The Mekong: Governance Challenges
Provedor de dados: 31
Autores: Hirsch,   Philip.
The Mekong Basin is rich in water and other resources, and the six countries that share it include some of the world’s poorest on a per capita income basis. They also include some of the world’s fastest growing economies. Two of the countries also have fast growing rural populations. The Mekong is a shared resource. It is shared across borders, among more than 60 million people who live in the basin, between those who live in the basin and others who draw on its resources, between farmers, fishers, power producers, consumers and many others. Water appropriation for human use is currently only about 12 per cent of total flow. Although dams currently regulate only five per cent of the waters in the basin, many large hydropower dams have been proposed or are...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/124472

Contracts for Grain Biosecurity and Grain Quality
Provedor de dados: 31
Autores: Abougamos,   Hoda; White,   Benedict; Sadler,   Rohan.
The export of grain from Western Australia depends upon a grain supply network that takes grain from farm to port through Cooperative Bulk Handling receival and storage sites. The ability of the network to deliver pest free grain to the port and onto ship depends upon the quality of grain delivered by farmers and the efficacy of phosphine based fumigation in controlling stored grain pests. Phosphine fumigation is critical to the grain supply network because it is the cheapest effective fumigant. In addition, it is also residue free. Unfortunately, over time, common stored-grain pests have evolved to develop resistance to phosphine and there is a risk that phosphine will become less effective and may need to be replaced with more expensive alternative...
Tipo: Presentation
Palavras-chave: Principal-agent model; Supply contracts; Moral hazard; Stored grain; Biosecurity; Crop Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124216

A System Approach on Organizational Innovations in the Agro-Food Sector: The Case of AFSCs in Flanders
Provedor de dados: 31
Autores: Vandermeulen,   Valerie; Vuylsteke,   Anne; Van Huylenbroeck,   Guido.
Together with the evolution from the agro-industrial model to the sustainable rural development model (Roep and Wiskerke 2004), a part of the agro-food market has evolved from an anonymous, mass food market to a quality-food market. This shift is driven by factors, such as the changing relations between supply chain actors due to concentration in retail and processing, the growing importance of quality standards, considerable changes in consumer habits and preferences, the increasing attention for the multifunctional dimensions of agriculture and the establishment of new markets for public goods and services (Kirwan, Slee et al. 2003; Jahn, Zerger et al. 2007). As a consequence, the contemporary agro-food markets are more and more characterised by...
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Production Economics.
Ano: 2011
URL: http://purl.umn.edu/122011

The Role of Varietal Attributes on Adoption of Improved Seed Varieties. The Case of Sorghum in Kenya
Provedor de dados: 31
Autores: Timu,   Anne G.; Mulwa,   Richard M.; Okello,   Julius Juma; Kamau,   Mercy W.
This paper examines the effect of variety attributes on adoption of improved sorghum varieties in Kenya. Using data from 140 farmers, the paper uses a multivariate probit to identify variety-specific drivers of adoption. The results on the perception of farmers variety attributes show that improved varieties had desirable production and marketing attributes while the local varieties were perceived to have the best consumption attributes. Evidence further indicates that the major sorghum variety attributes driving rapid adoption are taste, drought tolerance, yield, ease of cooking and the variety’s ability to fetch a price premium. Early maturity, a major focus of research has no effect on adoption.  The findings of the study imply that, while developing...
Tipo: Presentation
Palavras-chave: Sorghum; Variety Attributes; Multi Variate Probit Model; Adoption.; Agricultural and Food Policy; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/123301

MAKE FOOD NOT WAR: PRO-SECURITY OPTIONS FOR THE ASIA PACIFIC REGION
Provedor de dados: 31
Autores: Gwynne,   Beris.
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 2000
URL: http://purl.umn.edu/123872

Analyzing Crop Revenue Safety Net Program Alternatives and Impacts on Producers and Program Costs
Provedor de dados: 31
Autores: Jansen,   Jim A.; Lubben,   Bradley D.; Stockton,   Matthew C.
This study evaluates the policy effects of alternative program designs for federal revenue-based farm income safety net programs.  Eight representative farms across Nebraska are used to stochastically simulate the financial impact of changing the current farm crop revenue-based safety net with a state revenue trigger against potential alternative programs involving guarantees at the district, county, or farm level.  Results indicate that decreasing the aggregation of the revenue guarantee increases expected farm-level payments and program costs for the revenue-based safety net.
Tipo: Presentation
Palavras-chave: Agricultural policy; Farm bill; Farm programs; Government payments; Representative farms; Risk management; Simulation; Agricultural and Food Policy; Farm Management; Risk and Uncertainty; Q12; Q18.
Ano: 2012
URL: http://purl.umn.edu/119784

MATCHING COTTON GROWERS’ PERCEPTIONS OF THE VALUE OF INGARD™ COTTON WITH ECONOMIC ANALYSIS BASED ON SAME FARM PAIRED COMPARISONS OF PERFORMANCE
Provedor de dados: 31
Autores: Hancock,   Wayne M.; Harrison,   Jennifer L.; O'Brian,   Dennis T.
The genetically modified INGARD™ cotton seed was released in Australia in 1996 and was greeted with high expectations and enthusiasm within the cotton industry. INGARD™ cotton seed contains the Cry1A(c) gene from the soil bacteria Bacillus thuringiensis var kurstaki for the biological control of Helicoverpa armigera and H. punctigera moth larvae in cotton. These are the most serious insect pests of cotton and account for the majority of insecticides applied to cotton in Australia. Significant environmental and economic benefits were claimed by the manufacturer (Monsanto) at the time of release through the reduction in pesticide use and from a less complex production management system. Grower attitudes and perceptions relating to INGARD™ were followed over...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123811

Fire Management: Imbalanced and Misunderstood?
Provedor de dados: 31
Autores: Moore,   Peter.
Rural fires occur from the edge of highly developed and urbanised land through to remote and inaccessible wilderness. Ignition sources are numerous and varied, and nearly always from people. Fire impacts range from catastrophic to beneficial. Fire is an integral and important component of most natural ecosystems, and efforts to eliminate it may be neither practicable nor desirable. Equally, unplanned fire is neither desirable nor welcome in areas such as agricultural lands. In order to have any success in ‘managing’ fire there must be a good understanding and knowledge of fire in the landscape being managed. To establish what is required for fire management it is necessary to consider and frame the factors systematically. I present the key identified areas...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 2005
URL: http://purl.umn.edu/124415

A review of economic issues for sustainable shrimp farming in the Mekong Delta, Vietnam
Provedor de dados: 31
Autores: Clayton,   Helena; Brennan,   Donna C.
In recent years, the growth and intensification of shrimp aquaculture in Asia has been explosive. Asia reportedly produces nearly eighty per cent of the world's total farmed shrimp output. With strong demand and high world prices, along with declining wild shrimp stock, shrimp aquaculture in Asia, particularly in coastal regions, is becoming an increasingly important source of income and employment. In Vietnam, shrimp aquaculture is now one of the most important aquaculture practices in terms of area, production, employment and foreign exchange generation. In the coastal regions of the Mekong Delta, where most of the shrimp aquaculture is practised, saline intrusion in the dry season often limits rice production to just one wet season crop per year. The...
Tipo: Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123794

DO NEIGHBORHOOD PARKS AND PLAYGROUNDS REDUCE CHILDHOOD OBESITY?
Provedor de dados: 31
Autores: Fan,   Maoyong; Jin,   Yanhong H.
Promoting physical activity in children is an important front battling Childhood obesity. This paper investigates if and by how much neighborhood parks and playgrounds, one of the most important activity-enhancing neighborhood facilities, affect childhood obesity. We employ a covariate matching technique to analyze the 2007 National Survey of Children Health data. We find that neighborhood parks and playgrounds make children more fit. The reduction in body mass index (BMI) as well as the overweight or obesity risk is both statistically and economically significant. We also find that the park impact depends on gender, age, race, income, neighborhood safety, and other neighborhood amenities. The results suggest that a provision of neighborhood parks and...
Tipo: Presentation
Palavras-chave: CHILDHOOD OBESITY; NEIGHBORHOOD AMENITY; PARK/PLAYGROUND; MATCHING; Food Consumption/Nutrition/Food Safety; Health Economics and Policy; I18 I38 R53.
Ano: 2012
URL: http://purl.umn.edu/123421

THE ESTABLISHMENT OF AN ORGANIC FARMERS’ MARKET AS A TRAINING CASE STUDY FOR STUDENTS OF THE FACULTY OF AGRICULTURE IN THE UNIVERSITY OF PALERMO
Provedor de dados: 31
Autores: Schifani,   Giorgio; Inglese,   Paolo; Noto,   Francesca.
The role of organic agriculture in the island of Sicily is well recognised by farmers, though the consumption of organic products still fails to largely develop in the local markets, due to several reasons, among which the small scale agricultural system and its structural poor organization plays a major role. The University of Palermo holds two major undergraduate and graduate courses on “Organic Agriculture” with a very good participation of Students. A student’s association was established with the aim of: a) encourage the consumption of organic products coming from local small scale farmers, and b) endorse the capacity of creating new job skillnes and opportunities for graduate students of the Faculty, and encourage the relationship by producers and...
Tipo: Presentation
Palavras-chave: Organic farming; Small scale farmers; Buyer groups; Agribusiness; Agricultural and Food Policy; Consumer/Household Economics; Environmental Economics and Policy.
Ano: 2010
URL: http://purl.umn.edu/123720

Development of private insurance schemes as a means to reduce water overexploitation during drought events. A case study in Campo de Cartagena (Segura River Basin, Spain)
Provedor de dados: 31
Autores: Perez Blanco,   Carlos Dionisio; Gomez Gomez,   Carlos Mario.
Water is a key input in the production of many goods and services and under certain conditions can become a critical limiting factor with significant impacts on regional development. This is the case of many agricultural European Mediterranean basins, where water deficit during drought events is partially covered by illegal abstractions, mostly from aquifers, which are tolerated by the authorities. Groundwater overexploitation for irrigation has created in these areas an unprecedented environmental catastrophe that threatens ecosystems sustainability, urban water supply and the current model of development. Market-based drought insurance systems have the potential to introduce the necessary incentives to reduce overexploitation during drought events and...
Tipo: Presentation
Palavras-chave: Drought insurance; Stochastic models; Groundwater; Agriculture; Risk and Uncertainty; Q15; Q18; Q25; Q51; Q58.
Ano: 2012
URL: http://purl.umn.edu/122453

Yellowfin Tuna in the Market for High Value Agricultural Products: Competitive Capability in Dominica
Provedor de dados: 31
Autores: Theophille,   Brent; Hutchinson,   Sharon D.; Iton,   Ardon.
Belize City, Belize 23rd - 27th July, 2007
Tipo: Presentation
Palavras-chave: Yellowfin tuna; High-value product; Competitiveness; Fisheries; Dominica.; Agribusiness; Q22; Q13.
Ano: 2009
URL: http://purl.umn.edu/122888

Do cooperatives help the poor? Evidence from Ethiopia
Provedor de dados: 31
Autores: Rodrigo,   Maria F.
Tipo: Presentation
Palavras-chave: Poverty trap; Cooperatives; Agricultural and Food Policy; Community/Rural/Urban Development; International Development.
Ano: 2012
URL: http://purl.umn.edu/124388

Food Authenticity, Technology and Consumer Acceptance
Provedor de dados: 31
Autores: Hobbs,   Jill E.; McDonald,   Jillian; Zhang,   Jing.
Traceability and authenticity issues have gained increasing prominence in food markets and create both opportunities and challenges for the food industry in providing credible information to consumers. Internal molecular tagging is an emerging technology with the potential to deliver traceability and authenticity assurances. A key question for the food industry in adopting new technologies is consumer acceptance. This paper explores consumer attitudes toward traceability and authenticity and the role of information in affecting consumer acceptance of new technologies, using molecular tagging as an example. Data were gathered from an online survey conducted in Canada in December 2010. To determine whether product-specific effects exist, two versions of the...
Tipo: Presentation
Palavras-chave: Traceability; Authenticity; Consumer acceptance; Choice experiment; Information treatment; Agribusiness; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Research and Development/Tech Change/Emerging Technologies; Q13.
Ano: 2012
URL: http://purl.umn.edu/123881

Mandatory Labelling: Evidence from the French Fromage Blanc and Yogurt Market
Provedor de dados: 31
Autores: Allais,   Olivier; Etile,   Fabrice; Lecocq,   Sebastien.
A number of public health advocates and consumer associations urge policy makers to strengthen nutrient labelling rules, in order to help people to make healthier and better informed food choices. Yet, little is known about the e¤ectiveness of mandatory labelling. This research evaluates the impact of a mandatory fat label policy on consumer choices in the fromages blanc and dessert yogurt market. While fat labels are mandatory since 1988 for fromages blancs, this is not the case for yogurts. This is a natural source of variation to identify separately consumer preferences for labels and for fat. We use a mixed logit discrete choice model and household scanner data collected in 2007 to estimate the distribution of the Willingness-To-Pay (WTP) for fat...
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety; Marketing.
Ano: 2011
URL: http://purl.umn.edu/120382

The Implicit Prices of Finfish and Shellfish Attributes and Retail Promotion Strategies: Hedonic Analysis of Weekly Scanner Data in the U.S.
Provedor de dados: 31
Autores: Gold,   Glen; Sherry,   Larkin.
Using AC Neilson retail scanner data on U.S. frozen finfish and shellfish sales from 2007-2010, hedonic models of each market estimated price discounts following the Deepwater Horizon oil spill and as a result of promotional activities, and premiums and discounts for select products labeled “wild” and “imported”, respectively.
Tipo: Presentation
Palavras-chave: Hedonic Analysis; Scanner Data; Finfish; Shellfish; Fisheries; Implicit Prices; Product Attributes; Promotion; Labeling; Deepwater Horizon Oil Spill; Demand and Price Analysis.
Ano: 2012
URL: http://purl.umn.edu/119806

Research Solutions for a Win-Win-Win
Provedor de dados: 31
Autores: Smith,   Barney.
Global fish production, consumption trends, and the trade in seafood products are dominated by the developing world, particularly Asia. The importance of fish to the poor as an affordable and readily available staple food and as a source of livelihood opportunities is rarely well documented and all too often under-weighted in the development decisionmaking process. The rapid pace of change in Asia renders the poor particularly vulnerable under such circumstances The world’s seas now appear to have reached their production limits, with most of the major capture fisheries assessed as fully exploited or operating beyond sustainable limits. With future prospects for further sustained growth in landings at best limited, aquaculture is being targeted as the...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/124079

O PROGRAMA ESTADUAL DE ELETRIFICAÇÃO RURAL EM PERNAMBUCO NO PERÍODO 1998-2002: ONDE ESTÁ A DEMANDA POR ENERGIA?
Provedor de dados: 31
Autores: Ribemboim,   Jacques; Menezes Junior,   Antonio Alfredo Oliveira Lima De.
Uma análise do programa de eletrificação rural no estado de Pernambuco entre os anos de 1998 e 2002 mostra que a demanda total por energia elétrica não acompanhou a expansão da oferta via ampliação da cobertura de atendimento. Com efeito, estudos sobre políticas de eletrificação e seus efeitos no bem-estar e na estrutura produtiva das comunidades atendidas não são freqüentes no país e muito raros no Nordeste. A eletrificação ainda é vista pura e simplesmente como panacéia para a pobreza rural, sem se empregar ações complementares de educação para o consumo e ações de melhoria na estrutura produtiva das novas populações atendidas. A chegada da rede de energia elétrica ou outras fontes de energia a áreas remotas é fortemente desejável – isto está fora de...
Tipo: Presentation
Palavras-chave: Eletrificação rural; Desenvolvimento rural; Pobreza; Pernambuco; Community/Rural/Urban Development.
Ano: 2008
URL: http://purl.umn.edu/118711

REVIEW OF THE ECONOMICS OF THE COMMUNITY SURFACE DRAINAGE PROGRAM IN THE SHEPPARTON IRRIGATION REGION
Provedor de dados: 31
Autores: Montecillo,   Olive P.
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/124092

The Search for Sustainable Seas
Provedor de dados: 31
Autores: Earle,   Sylvia A.
Recent sharp declines in numerous fish species and other ocean wildlife have forced serious reevaluation of old assumptions about the capacity of marine systems to sustain large-scale taking, especially when coupled with drastic habitat destruction, by-catch and food-web disruptions. Achieving ‘sustainable use’ of ocean wildlife is a widely-held goal, but present capacity to find, extract and transport marine life to distant markets generally exceeds the capacity of the exploited species and supporting ecosystems to recover. The role of fully protected areas within large marine management regimes or ‘seascapes’ is becoming recognised as a vital part of what is needed to restore depleted populations and ecosystems and maintain their long-term integrity....
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/124066

Taxes and Quality: Theoretical Results from a Market-Level Analysis
Provedor de dados: 31
Autores: James,   Jennifer S.
Tipo: Presentation
Palavras-chave: Agribusiness; Public Economics.
Ano: 2000
URL: http://purl.umn.edu/123671

MANAGERIAL ABILITY (THE FORGOTTEN RESOURCE) ITS ASSESSMENT AND MODIFICATION
Provedor de dados: 31
Autores: Nuthall,   Peter L.
Survey information in most countries shows very clearly that farmers achieve a wide range of profitability levels. Some of the variation will be due to farmers having different goals and objectives, but a significant proportion will also be due to variations in managerial skill. If even modest skill improvements can be achieved the resource efficiency payoff will be significant and at little cost relative to many physical research programmes - this goal is worth seeking. Managerial skill improvement has received little attention in the past. Standard teaching methods can probably help to a certain extent, but many skills may be deeply imbedded thus requiring different methods. Evidence from cognitive therapy papers suggests basic traits can be modified, so...
Tipo: Presentation
Palavras-chave: Farm Management.
Ano: 1999
URL: http://purl.umn.edu/124495

Demographic Factors Affecting the Adoption of Multiple Value-Added Practices  by Oklahoma Cow-Calf Producers
Provedor de dados: 31
Autores: Williams,   Brian R.; Raper,   Kellie Curry; DeVuyst,   Eric A.; Peel,   Derrell S.; Lalman,   David L.; Richards,   Chris; Doye,   Damona G.
The utilization of marketing programs to enhance feeder calf value has been met with modest success in Oklahoma. Value-added programs are continually promoted as avenues for improving cow-calf profitability, but producer adoption of value-added practices lags in spite of research showing the value of these practices. Identifying producer characteristics that increase their likelihood to adopt value-added practices is critical to developing successful outreach efforts.  Results from a survey of Oklahoma producers on value-added practice adoption indicate that multiple demographic variables influence a producer’s likelihood of practice adoption. For Extension specialists, results can help in targeting likely adopters and developing methods to overcome...
Tipo: Presentation
Palavras-chave: Beef producers; Value-added practices; Practice adoption; Negative binomial regression; Poisson regression; Farm Management; Livestock Production/Industries; Q12; Q16.
Ano: 2012
URL: http://purl.umn.edu/119743

Evaluation of predator-proof fenced biodiversity projects
Provedor de dados: 31
Autores: Doelle,   Sebastian.
There has been recent debate over the role of predator-proof fences in the management of New Zealand’s biodiversity. The debate has arisen due to concern that investments in fenced sanctuaries are less productive than are alternative ways to manage biodiversity. Predator-proof fences are costly and budget constraints limit the area of habitat that can be fenced. The area of habitat enclosed within fences, and number of individuals of species supported, determines project’s ability to contribute to biodiversity goals. Many fenced sanctuary projects require substantial, continuing volunteer input to monitor fences and other tasks. These projects often pursue a number of goals including species protection, habitat restoration, education and community...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124289

AUMENTO DA EFICIÊNCIA TÉCNICA NA INDÚSTRIA DE ALIMENTOS DOS ESTADOS BRASILEIROS VIA METAS INTERMEDIÁRIAS
Provedor de dados: 31
Autores: Sousa,   Alexandre Gervasio; Santos,   Ricardo Bruno Nascimento dos; Araujo,   Aracy Alves.
Propôs-se, neste artigo, uma busca de alvos, por etapas, com alvos intermediários nas camadas de iso-eficiência para que o Setor de Fabricação de Produtos Alimentícios e Bebidas (SFPAB) de cada estado atinja, de forma gradual, um nível de eficiência técnica mais elevado. Utilizaram-se dados da Pesquisa Industrial Anual (PIA) de 2005 do IBGE. Aplicou-se a análise envoltória de dados (DEA) orientada ao insumo, tendo-se a receita líquida do setor como produto e como insumos o total do custo das operações industriais (COI) e as remunerações do setor (SRO). Dos 18 estados analisados, São Paulo é o mais eficiente e Santa Catarina, o mais ineficiente. Outros 11 estados são tecnicamente ineficientes, de forma que 6 devem, no curto prazo, buscar a camada 1; 5 a...
Tipo: Presentation
Palavras-chave: Eficiência técnica; Metas intermediárias; DEA; Produtos alimentícios e bebidas; Technical efficiency; Intermediate goals; DEA; Food and beverage industry; Agribusiness; Industrial Organization.
Ano: 2008
URL: http://purl.umn.edu/118708

Consumers’ Willingness to Pay for Bacteriophage Technology Treated Fresh Produce
Provedor de dados: 31
Autores: Yeboah,   Osei-Agyeman; Goktepe,   Ipek; Naanwaab,   Cephas B.; Kyei,   Foster Ofori.
The United States is remarkably safe, when it comes to food supply. Nevertheless, food can become contaminated with a variety of germs. According to reports by a food safety group of the Centers for Disease Control and Prevention, food-borne illness caused by bacteria such as E. coli and salmonella not only take a huge toll on American consumers’ health but they cost the United States an estimated $152 billion annually in health care and other losses. To curb this increasing phenomenon, there has been a reintroduction of bacteriophage in the treatment of bacteria on raw foods. This study utilized a survey questionnaire administered by telephone to consumers in four different states; Alabama, Georgia, North Carolina, and South Carolina.  In this study, as...
Tipo: Presentation
Palavras-chave: Willingness-to-pay; Bacteriophage; Fresh produce; Logit model; Agribusiness; Agricultural and Food Policy; Consumer/Household Economics; Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119733

SUSTENANCE AND SECURITY: AUSTRALIA’S MULTI-LAYERED APPROACH
Provedor de dados: 31
Autores: Downer,   Alexander.
Tipo: Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2000
URL: http://purl.umn.edu/123862

Gender analysis and reform of irrigation management: concepts, cases, and gaps in knowledge; Proceedings of the Workshop of Gender and Water, 15-19 September 1997, Habarana, Sri Lanka
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Gender; Privatization; Irrigation management; Women in development; Property rights; Water scarcity; Developing countries; Agricultural production; Water resources; Water rights; Poverty; Policy; Economic aspects; Land tenure; Legislation; Rice; Water users' associations; Irrigated farming; Planning; Agricultural and Food Policy; Agricultural Finance; Farm Management; Food Security and Poverty; Institutional and Behavioral Economics; International Development; Labor and Human Capital; Land Economics/Use; Public Economics; Resource /Energy Economics and Policy.
Ano: 1998
URL: http://purl.umn.edu/118416

Increasing Profitability of Small Scale Orchard Producers through Optimizing Replacement Rate: The Case Study of Ghana
Provedor de dados: 31
Autores: Mahrizal; Nalley,   Lawton Lanier; Dixon,   Bruce L.; Popp,   Jennie S. Hughes.
This study sets out to empirically estimate the optimum annual replacement rate and age of cocoa trees in order to maximize the net present value of four common cocoa production systems. The study examines the costs and returns of four common cocoa production systems in Ghana associated with changes in cocoa prices, fertilizer prices, inflation rates, and labor prices. While this study focuses on cocoa, the methodology is applicable to any perennial crop. This study uses empirical yield curves and cost of production data from Ghana to determine when and what percentage of a cocoa orchard should be replaced annually to maximize net present value of revenues over time. Successive versions of the model are solved to determine how input and output price...
Tipo: Presentation
Palavras-chave: Cocoa; Replacement Rate; Net Present Value (NPV); Production Economics; Q01; Q15; Q32.
Ano: 2012
URL: http://purl.umn.edu/119777

Threats from Illegal Fishing
Provedor de dados: 31
Autores: MacDonald,   Ian.
Before I start my presentation on the very important subject of illegal fishing, I do want to congratulate Dr Meryl Williams on her appointment to the Chair of the Board of Management of the Australian Centre for International Agricultural Research and President of its Policy Advisory Council. I am very pleased to note that for the first time we have in the position someone who does have a very distinguished background in fisheries. I also am delighted to have someone there who lived in the same small country town as I did in Queensland. Fish, fisheries, fisheries management, oceans and seas are particularly important for a country like Australia where our marine jurisdiction is about twice the size of the nation’s landmass. One of the major differences...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/124072

Consumer Attitudes and Preferences for Peanut Paste in Sub-Saharan Africa: Evidence from Ghana
Provedor de dados: 31
Autores: Heboyan,   Vahe; Florkowski,   Wojciech J.; Sarpong,   Daniel Bruce; Resurreccion,   Anna V.A.; Chinnan,   Manjeet S.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/119820

Economics of Incorporating Public Participation in Efforts to Redress Degradation of Agricultural Land
Provedor de dados: 31
Autores: Marshall,   Graham R.
More and more environmental economists are finding themselves working within the unchartered territory of participatory governance. Yet many have not appreciated that the shift from progressive, or ‘technocentric’, governance to participatory governance signifies a corresponding departure from the modern worldview underpinning their theory. This paper has two aims. The first is to contribute to an economic explanation of this worldview shift. The intention here is to help overcome the "disciplinary arrogance" and "close-minded adherence to ... ideological convictions" that Sandra Batie, in a presidential address to the American Agricultural Economics Society, identified as "our own worst enemy" when contributing to debates over how to realise sustainable...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123849

U.S. Citrus Import Demand: Seasonality and Substitution
Provedor de dados: 31
Autores: Baldwin,   Katherine L.; Jones,   Keithly G.
Citrus fruits make up one-fifth of all fresh fruit consumed in the United States. Given the increasing importance of imported citrus in the diet of American consumers, it is perhaps surprising that no import demand analysis of U.S. citrus has been conducted. Using quarterly U.S. import data for six citrus commodities, we employed a demand systems model and evaluated aspects of seasonality. The results suggest wide variations in price responses to different types of imported citrus. The average amplitude and phase shift suggest that all citrus fruits exhibit some seasonality in their imports, likely a result of peak harvesting schedules of exporters.
Tipo: Presentation
Palavras-chave: Fresh citrus; Oranges; Limes; Lemons; Grapefruit; Mandarins; Import demand; Seasonality; Demand and Price Analysis; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/119741

Contribution of Agriculture and Agri-Food Sectors to the Economy of Trinidad and Tobago
Provedor de dados: 31
Autores: Pemberton,   Carlisle A.; Patterson-Andrews,   Hazel.
Belize City, Belize 23rd - 27th July, 2007
Tipo: Presentation
Palavras-chave: Agriculture; Agribusiness; Agri-food sector; Trinidad and Tobago; Agricultural and Food Policy; Q18; E00.
Ano: 2009
URL: http://purl.umn.edu/122907

Managing Excessive Predation in a Predator-Prey Setting: The Case of Piping Plovers
Provedor de dados: 31
Autores: Melstrom,   Richard T.; Horan,   Richard D.
Ecosystems involve interspecies interactions that can be influenced by human interventions.  Prior work shows interventions that ignore these interactions cause efficiency-reducing ecosystem externalities.  We show inefficiencies may also be attributable to nature, via interspecies interactions generating excessive competition or predation. Ecosystem management therefore may involve correcting both ecological and economic inefficiencies.  We explore ecosystem management to correct ecological inefficiencies from predation.  The inefficiencies are shown to be akin to anthropogenic externalities arising when humans harvest resources under open access conditions, and so the solution is to “regulate” predators.  Viewing the ecological inefficiencies in this...
Tipo: Presentation
Palavras-chave: Bioeconomics; Wildlife management; Endangered species; Open access; Predator control; Predator removal; Exclosures; Piping Plovers; Merlins; Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/123350

EU wide regional impacts of climate change
Provedor de dados: 31
Autores: Shrestha,   Shailesh; Himics,   Mihaly; Van Doorslaer,   Benjamin; Ciaian,   Pavel.
The current paper investigates the medium term impact of climate changes on EU agriculture. We employ CAPRI partial equilibrium modelling framework. The results indicate that within the EU, there will be both winners and losers, with some regions benefitting from climate change, while other regions suffering losses in production and welfare. In general, there are relatively small market effects at the EU aggregate. For example, the value of total agricultural income, land use and welfare change by approximately between -0.3% and 2%. However, there is a stronger impact at regional level with the effects increase by a factor higher than 10 relative to the aggregate EU impacts.  The price adjustments reduce the response of agricultural sector to climate...
Tipo: Presentation
Palavras-chave: Climate change; Regional impacts; CAPRI; Market effects; Risk and Uncertainty; Q54.
Ano: 2012
URL: http://purl.umn.edu/122546

An Empirical Analysis of the Role of China's Exports on CO2 Emissions
Provedor de dados: 31
Autores: Michieka,   Nyakundi M.; Fletcher,   Jerald J.; Burnett,   J. Wesley.
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/123501

An Economic Assessment of Competing Technologies for Coastal Restoration
Provedor de dados: 31
Autores: Wang,   Hua; Caffey,   Rex H.; Petrolia,   Daniel R.
In the wake of Hurricane Katrina, the Louisiana Coastal Protection and Restoration Authority (CPRA) was established to integrate programs for habitat restoration and infrastructure protection. The Authority has begun aligning the state’s coastal spending to reflect increasing public interest in the restoration of surface acreage.  Concurrent with these changes, programmatic emphasis has been placed on rapid land building (RLB) techniques that rely on mechanical dredges and sediment conveyance pipelines to build new land. The apparent costs and benefits of this approach are increasingly compared in the scientific community to more traditional and natural methods of restoration, such as freshwater diversions (DIV). Given limited state and federal budgets for...
Tipo: Presentation
Palavras-chave: Coastal Restoration; Wetland; Economics; Benefit-Cost; Marsh Creation; Freshwater Diversion; Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119740

Constant Market Shares Analysis: Uses, Limitations and Prospects
Provedor de dados: 31
Autores: Ahmadi-Esfahani,   Fredoun Z.; Anderson,   Glenn Michael.
Constant market shares (CMS) analysis compares the actual export growth performance of a country with the performance that would have been achieved if the country had maintained its exports relative to some standard. The approach was first applied to international trade in the 1950s and has generally been used to analyse trading patterns and, in particular, the extent to which poor export performance can be attributed to a loss of ‘competitiveness’. However, the approach has been open to objections as a tool of description and diagnosis. Recent revisions appear to meet objections concerning its role as a descriptive tool. However, CMS analysis remains open to objections as a diagnostic tool owing to the strict theoretical conditions required to yield an...
Tipo: Presentation
Palavras-chave: Marketing.
Ano: 1999
URL: http://purl.umn.edu/122329

On the use of honesty priming task to mitigate hypothetical bias in choice
Provedor de dados: 31
Autores: de Magistris,   Tiziana; Gracia,   Azucena; Nayga,   Rodolfo M., Jr.
We test whether the use of an honesty priming task from the social psychology literature can help mitigate hypothetical bias in stated preference choice experiments (CE). Using a between-sample design, we conducted experiments with five treatments: (1) hypothetical CE without cognitive task, (2) hypothetical CE with cheap talk script, (3) hypothetical CE with neutral priming task, (4) hypothetical CE with honesty priming task, and (5) non-hypothetical CE. Results generally suggest that marginal willingness to pay estimates from treatment 4 where subjects are given honesty priming task before the choice experiment are not statistically different from marginal valuations from treatment 5 where subjects are in a non-hypothetical choice experiment. Values from...
Tipo: Presentation
Palavras-chave: Hypothetical bias; Cheap talk; Priming; Willingness-to-pay; Marketing; Research Methods/ Statistical Methods; C23; D12; Q18.
Ano: 2012
URL: http://purl.umn.edu/123639

Sustaining surface and groundwater resources; Proceedings of the Internatinal Workshop on Conjunctive Water Management for Sustainable Irrigated Agriculture in South Asia, April 16-17, 2002 Lahore, Pakistan
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Water resource management; Conjunctive use; Surface water; Groundwater; Models; Crop production; Water requirements; Water balance; Water table; Sustainable agriculture; Environmental sustainability; Supplementary irrigation; Water quality; Rain; Pumping; Salinity control; Remote sensing; GIS; Water scarcity; Farm income; Institutional development; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Institutional and Behavioral Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/118417

The Impact of Crop Insurance on the Economic Performance of Hungarian Cropping Farms
Provedor de dados: 31
Autores: Sporri,   Martina; Baráth,   Lajos; Bokusheva,   Raushan; Ferto,   Imre.
Crop insurance products can improve and stabilize economic performance. However, due to insurance market imperfections, the use of insurance products often requires governmental support. This paper analyses the actual impact of insurance products on the economic performance of cropping farms by linking the economic performance model with the insurance demand model. For this analysis, a simultaneous equation system is solved. Our estimations show a negative impact of insurance on the economic performance indicators farm profit, labour productivity and land productivity. The analysis of the insurance demand side confirms financial limitations of many farms.
Tipo: Presentation
Palavras-chave: Hungary; Crop Insurance; 2SCML; Impact evaluation; Risk and Uncertainty; Q12; Q14; G22.
Ano: 2012
URL: http://purl.umn.edu/122525

Does MODSS offer an alternative to traditional approaches to natural resource management decision making?
Provedor de dados: 31
Autores: Robinson,   Jackie.
There is an increasing awareness, on the part of decision-makers, of the need to develop new or to extend traditional evaluation techniques to facilitate a multidisciplinary and participatory approach to decisionmaking. Such an approach would be particularly appropriate for decision-making with respect to the management of natural resources. Not only are there multiple objectives involved in making a decision about natural resource management but many of the identified objectives are competing and conflicting. This paper presents a multiple objective decision support system (MODSS) which was developed to assist decision-making for a catchment in Far North Queensland. The MODSS approach is shown to be a process, capable of incorporating information from a...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123726

Relationships with market intermediaries: the case of vegetable cluster marketing in Southern Philippines
Provedor de dados: 31
Autores: Axalan,   Jerick T.; Murray-Prior,   Roy B.; Concepcion,   Sylvia B.; Lamban,   Ruby Jane G.; Real,   Rodel R.; Montiflor,   Marilou O.; Batt,   Peter J.; Rola-Rubzen,   Maria Fay; Bacus,   Recarte H.; Israel,   Floro T.; Apara,   Dante A.
Effective relationship among partners is a key in strengthening collaborative marketing efforts. One of the collaborative marketing efforts is through clustering of farmer to link into market. This study examined the level of relationship of vegetable cluster farmers with their market intermediaries - cluster and the downstream buyers. A total of 81 vegetables farmers in Southern Philippines were surveyed to determine their relationship level on trust, power-dependence, relationship-specific investments and satisfaction. Comparison between clusters and downstream buyers were made using ANOVA and Welch Test. The study found that farmers have high level of trust to their clusters compared to their downstream buyers. The high level of trust is attributed to...
Tipo: Presentation
Palavras-chave: Trust; Relationships; Vegetable; Clustering; Southern Philippines; Marketing.
Ano: 2012
URL: http://purl.umn.edu/124222

Forests, Wood and Livelihoods: Finding a Future for All
Provedor de dados: 31
Autores: Downer,   Alexander.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124394

SOME OBSERVATIONS ON THE NATURE OF GOVERNMENT  INTERVENTION IN NATURAL RESOURCE MANAGEMENT
Provedor de dados: 31
Autores: Crean,   Jason; Pagan,   Phil; Curthoys,   Catherine.
The objectives of government in relation to natural resource management in agriculture have changed significantly over time. Similarly, the process that government employs to develop natural resource management policy has also evolved. In the past, policy has been developed centrally, while more recently there has been greater effort to involve the community in this process. There are clear linkages between changes in natural resource management objectives and changes in the policy development process. The implementation of the NSW Government’s Water Reforms is used as a case study to consider these linkages and to examine the advantages and disadvantages of moving to a more community based approach to natural resource management. The implications of this...
Tipo: Presentation
Palavras-chave: Water reform; Natural resource management; Policy process; Role of economists; Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123797

Policy for implementation of Index Based Weather Insurance revisited: the case of Nicaragua
Provedor de dados: 31
Autores: Banerjee,   Chirantan; Berg,   Ernst.
International development organisations, through partnerships with local insurance companies, have been promoting weather index based insurance (WIBI) in developing countries. Due to lower operational costs, they expect shorter pay-off period, often overlooking high initial design costs. Experiences however show high post-pilot mortality of these programmes. Literatures report lack of insurance participation. We propose lack of push from insurance providers as an additional factor. To verify, cash flows of a Nicaraguan groundnut based WIBI and a comparable but hypothetical named peril insurance are simulated against 80 scenarios. Additionally, a test of stochastic dominance of their estimated Net Present Values show that WIBI take comparatively longer to...
Tipo: Presentation
Palavras-chave: Index based rainfall insurance; Weather derivative; Operational cost; Nicaragua; International Development; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122448

The Murray-Darling Basin
Provedor de dados: 31
Autores: Craik,   Wendy.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/124476

Analysis of U.S. Demand for Imported Melons using a Dynamic Almost Ideal Demand System
Provedor de dados: 31
Autores: Kaninda Tshikala,   Sam; Fonsah,   Esendugue Greg.
Melons constitute an important part of the U.S. fruit and vegetable industry even though they are produced only from May through December of each year. Import supplies from Latin American countries are used to make up for the domestic demand shortages.  This paper investigates the U.S. demand for imported fresh and frozen melons using quarterly data on import volumes and unit prices. A static and a dynamic linear approximated almost ideal demand systems were estimated using ITSUR. Marshallian and Hicksian elasticities were used to analyze consumers’ responsiveness to price and income change in the short run and the long run.
Tipo: Presentation
Palavras-chave: Agribusiness; Demand and Price Analysis; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/119779

Rice and Remittances: The Impact of Labour Migration on Rice Intensification in Southern Laos
Provedor de dados: 31
Autores: Manivong,   Vongpaphane; Cramb,   Rob A.; Newby,   Jonathan C.
Despite being a low‐income, agriculture‐based country with a subsistence‐orientation, Laos is in the early stages of a major economic transformation whereby rural households have been experiencing rapid change in their farming and livelihood systems. Some households have engaged in what the World Bank classifies as market‐oriented farming while other households have adopted labour‐oriented or migration‐oriented livelihood strategies. This paper explores how rural households in six villages in the lowlands of Champasak Province in southern Laos make a living. These villages vary in their access to irrigation and to markets. Nevertheless, in all villages, long‐term migration of younger household members to neighbouring Thailand has come to play a large role...
Tipo: Presentation
Palavras-chave: Migration; Remittances; Rice intensification; Livelihood strategy; Rural poverty; Laos; Labor and Human Capital.
Ano: 2012
URL: http://purl.umn.edu/124337

Rural-Urban Migration and Vietnamese Agriculture
Provedor de dados: 31
Autores: Brennan,   Donna C.; Petersen,   Elizabeth H.; Que,   Nguyen Ngoc; Vanzetti,   David.
Vietnam has achieved remarkable economic growth since it liberalised its markets, and further economic growth and opportunities are predicted both within and outside the agriculture sector. However, growth has not been evenly distributed across regions and significant structural adjustment pressures are expected in the medium to long term. A dynamic, eight region, 13 commodity, non-linear programming model of Vietnam’s agricultural sector is used to analyse the likely impact of a change in rural-urban migration on agricultural production, prices, trade and regional incomes.
Tipo: Presentation
Palavras-chave: Community/Rural/Urban Development.
Ano: 2012
URL: http://purl.umn.edu/124405

The Impact of Low Income Home Energy Assistance Program (LIHEAP) Participation on Household Energy Insecurity
Provedor de dados: 31
Autores: Murray,   Anthony G.; Mills,   Bradford F.
Tipo: Presentation
Palavras-chave: LIHEAP; Energy Security; Program Evaluation; Resource /Energy Economics and Policy; Q48.
Ano: 2012
URL: http://purl.umn.edu/123968

Trade Elasticities: The Significance of Trade Barriers, Multinationals and Market Structure
Provedor de dados: 31
Autores: Ahmadi-Esfahani,   Fredoun Z.; Anderson,   Glenn Michael.
The elasticity of price transmission measures the extent to which a change in world prices will be transmitted to an importing country, with an elasticity of less than one being attributed to trade barriers. Recent research highlights the role that multinational trading companies may play in impeding price transmission. Further, in markets characterised by monopolistic competition an estimate of the partial elasticity of demand may be of limited practical value if no account is taken of the reaction of competitors. In this paper the potential for market structure to affect price transmission and trade elasticities is demonstrated. The elasticity of price transmission has been central to a revised approach to estimation of trade elasticities and has been...
Tipo: Presentation
Palavras-chave: Elasticity; Price transmission; Trade barriers; Monopolistic competition; International Relations/Trade.
Ano: 1999
URL: http://purl.umn.edu/122328

Quality Signaling through Certification
Provedor de dados: 31
Autores: Auriol,   Emmanuelle; Schilizzi,   Steven.
This paper analyzes the problem raised by quality provision in globalizing economies. When quality is a credence attribute, there is a signaling problem and quality drops to its minimum level. A way out of this under-provision equilibrium consists to rely on certification. However certification of goods involves costs, most of which are fixed, because to credibly signal quality, the certification process has to be carry out by an independent authority above all suspicion. The certification costs, which might justify a centralized intervention, become a major force in deciding market structure. Then in a given population the rate of certification depends on the consumers' wealth and size. If the population is too poor the market for certification collapses...
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy; Crop Production/Industries; D11; D21; L11; L15.
Ano: 2000
URL: http://purl.umn.edu/123598

Water flows up; Excerpts from the Proceedings of a Ministerial Roundtable Dialogue on Water-Sector Challenges, Policies and Institutional Development in Asia (Bangkok, Thailand, 22-23 May 2002)
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Water resource management; River basins; Governance; Planning; Water policy; Private investment; Political aspects; Equity; Sustainability; Social aspects; Economic aspects; Irrigated farming; Water use; Irrigation water; Institutional development; Institutional and Behavioral Economics; Political Economy; Public Economics; Resource /Energy Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/118401

Assessing the economic costs of an outbreak of Foot and Mouth Disease on Brittany: A dynamic computable general equilibrium approach
Provedor de dados: 31
Autores: Gohin,   Alexandre; Rault,   Arnaud.
Epizootic outbreaks such as Foot and Mouth Disease are of great concern for agriculture. In this paper, we quantify the potential dynamic impacts of such a disease on Brittany, a French region with a strong livestock sector. We develop a dynamic computable general equilibrium model with rational expectations that allows us to measure the impacts of culling infected animals and restraining movements of live animals on the livestock sectors and downstream food industries. Our results show that economic losses are spread over many periods even with a one-time shock. The impacts on the primary sectors and downstream food sectors do not move in parallel. The food industries suffer most in the first period while the negative impacts on agriculture are mostly...
Tipo: Presentation
Palavras-chave: Dynamics; CGE; Animal disease; Catastrophic event; Risk and Uncertainty; Q11; Q18.
Ano: 2012
URL: http://purl.umn.edu/122438

Fish, Aquaculture and Food Security: Sustaining Fish as a Food Supply
Provedor de dados: 31
Autores: Kearney,   Robert.
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/124081

Agricultural Costs of Carbon Dioxide Abatement via Land-use Adaptation on organic soils
Provedor de dados: 31
Autores: Schaller,   Lena; Kantelhardt,   Jochen; Droesler,   Matthias; Hoper,   Heinrich.
Increasing carbon dioxide emissions and related climate effects require mitigation strategies, thereby also emissions caused by agriculture are brought into the focus of political debate. In particular organic soil cultivation, inducing significant CO2 emissions is being discussed more and more. This study aims to answer the question of whether changes of organic soil management can serve as cost-efficient mitigation strategies for climate change. To this end we have built an economic model in which farm-individual and plot-specific CO2-abatement costs of selected landuse strategies are calculated by contrasting effects on the agricultural income with the related reduction in greenhouse-gas emissions. With respect to microeconomic data we use a dataset...
Tipo: Presentation
Palavras-chave: CO2 abatement cost; Climate change mitigation strategies; Microeconomic consequences; Organic soil management; Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/120393

Innovation Systems and Technical Efficiency in Developing-Country Agriculture
Provedor de dados: 31
Autores: Mekonnen,   Dawit Kelemework; Spielman,   David J.; Fonsah,   Esendugue Greg.
The paper uses a stochastic frontier analysis of production functions to estimate the level of technical efficiency in agriculture for a panel of 29 developing countries in Africa and Asia between 1994 and 2000. In addition, the paper examines how different components of an agricultural innovation system interact to determine the estimated technical inefficiencies. Results show that the mean level of technical efficiency among the sampled countries was about 86 percent, with some modest increases during the period in question. These results suggest that there is room for significant increases of production through reallocations of existing resources. Despite significant variation among countries, these results also indicate quite a number of least...
Tipo: Presentation
Palavras-chave: Agricultural innovation systems; Technical efficiency; Developing country agriculture; Agricultural and Food Policy; Crop Production/Industries; Food Security and Poverty; International Development; Production Economics; Productivity Analysis.
Ano: 2012
URL: http://purl.umn.edu/119788

Information Reference Models for European Pork Supply Networks
Provedor de dados: 31
Autores: Lehmann,   Richard J.; Fritz,   Melanie; Schiefer,   Gerhard.
Several global developments such as diminishing production resources, limits in the availability of water and the growing demand for bio-energy as well as sector-wide crises (e.g. BSE, swine fever, dioxin) have led to a changing attitude of society towards the conse-quences of the food system‘s activities for social, economic and environmental issues, cap-tured in the term of sustainability. As a consequence, consumers show increasing interest in the characteristics of food, and in turn, on the availability of related information and guaran-tees. The paper introduces different information reference models for European pork supply networks, which give an aggregated overview about information availability and exchange in the pork sector, identify additional...
Tipo: Presentation
Palavras-chave: Information Modelling; Reference Modelling; Food Safety; Quality; Global Warm-ing Potential; Agribusiness; Agricultural and Food Policy; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/122014

Consumers’ willingness-to-pay for low-calorie labeled Rice
Provedor de dados: 31
Autores: Iwamoto,   Hiroyuki.
The purpose of this study is to examine the importance of low calorie content in Japanese consumers’ rice purchasing decisions. The Choice Modeling (Random Parameter Logit Model) is used in order to quantify the welfare change associated with the change in the level of low calorie content, local origin label, price attribute for the sample of Japanese consumers in March 2009. The consumer has a positive perception of local origin and rice cultivar label. Average evaluation of the low calorie content attribute is negative (-116 yen/5kg). But, half of samples have positive perception of low calorie content. Their willingness to pay for low-calorie content attribute range from 800-900 yen/5kg.The results suggests that latent demand for low calorie labelled...
Tipo: Presentation
Palavras-chave: Choice Experiment; Quality of Life (QOL); Wellness Market; Consumer/Household Economics.
Ano: 2012
URL: http://purl.umn.edu/124318

The Performance Appraisal and Valuation of Cooperative Organisations: The Example of the New Zealand Dairy Board
Provedor de dados: 31
Autores: Newman,   Derek L.
Tipo: Presentation
Palavras-chave: Agribusiness.
Ano: 1999
URL: http://purl.umn.edu/124093

Waste Not, Want Not: Managing Livestock Waste for Income and the Environment
Provedor de dados: 31
Autores: Christoe,   Jock.
The world-wide intensification of livestock industries poses major challenges for waste disposal. For example, the total solids wastes discharged from livestock farms in China exceeded 1.7 billion tons in 1997, with a further 20 billion tons of waste water being discharged to the environment — only 10% of these wastes were treated! A key element of sustainable development is Cleaner Production. Cleaner Production is an approach in which wastes are handled in such a way that environmental pollution is avoided. Cleaner Production practices include waste minimisation, pollution prevention, recycling and community-based environmental approaches. An increase in the production of livestock products means an increase in the production of livestock wastes and,...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Livestock Production/Industries.
Ano: 2003
URL: http://purl.umn.edu/124019

Impact of a Commodity Price Spike on Poverty Dynamics: Evidence from a Panel of Rural Households in Bangladesh
Provedor de dados: 31
Autores: Balagtas,   Joseph Valdes; Bhandari,   Humnath; Mohanty,   Samarendu; Cabrera,   Ellanie; Hossain,   Mahabub.
In this paper we assess the effects of the dramatic rise in agricultural commodity prices during 2007-2008 on income dynamics and poverty among rural households in Bangladesh. We use data from a nationally representative longitudinal survey of rural households in Bangladesh collected in four waves in 1988, 2000, 2004, and 2008. Nargis and Hossain (2006) analysed income dynamics and poverty incidence for the first three waves, finding a declining trend in both the incidence and depth of poverty, aided by in particular by human capital development and the off-farm labor opportunities. Here we update the analysis to include data collected in 2008, at the height of the aforementioned spike in agricultural prices. We find that various measures of rural poverty...
Tipo: Presentation
Palavras-chave: Poverty; Income; Commodity price spike; Rural households; Bangladesh; Panel data; Demand and Price Analysis; Food Security and Poverty.
Ano: 2012
URL: http://purl.umn.edu/124225

Impact of information and communication technology (ICT) on international trade in fruit and vegetables: A gravity model approach
Provedor de dados: 31
Autores: Thiemann,   Franziska; Fleming,   Euan M.; Mueller,   Rolf A.E.
Globalization results when markets become more integrated because of reduced transaction and transport costs. These costs have fallen because of sustained advances in transport technology and, more dramatically, in digital information and communication technology (ICT). Although communication costs tend to be a minor component of total trading costs, reductions in these costs may strongly stimulate international trade. The empirical evidence in support of this effect is, however, scant and its strength may depend on the composition of ICT and the nature of the product being traded. We test the hypothesis of an ICT effect on trade in bananas, oranges, tomatoes, and vegetables and fruit in general. We employ a gravity model of international trade between...
Tipo: Presentation
Palavras-chave: Gravity model; Information and communication technology (ICT); International trade; Fruit and vegetables; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/123839

Economics of Fish Marketing in Central Uganda: A Preliminary Analysis
Provedor de dados: 31
Autores: Bukenya,   James O.; Hyuha,   Theodora; Twinamasiko,   Julius; Molnar,   Joseph J.
The paper examines profitability and market performance of small-scale fish traders selected randomly from a cross-section of nine fish markets in four districts in Central Uganda. Data were collected through a structured questionnaire which was designed to solicit information on traders’ socio-economic characteristics, marketing characteristics, operating costs and returns, and problems associated with fish marketing in the study area. Percentages were used to describe the socio-economic characteristics, market characteristic and problems associated with fish marketing while gross profit and marketing performance models were used to determine profitability, marketing margin and operational efficiency, respectively. The results suggest that fish trade is...
Tipo: Presentation
Palavras-chave: Fish marketing; Survey data; Gross profit; Market margin; Operational efficiency; Uganda; Agribusiness; International Development; International Relations/Trade; Marketing; Research Methods/ Statistical Methods.
Ano: 2012
URL: http://purl.umn.edu/119527

27th Annual Conference - Australian Agricultural Economics Society, Brisbane, February 1983
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1983
URL: http://purl.umn.edu/118919

A Dynamic Optimisation Model of Weed Control
Provedor de dados: 31
Autores: Jones,   Randall E.; Cacho,   Oscar J.
It is argued in this paper that static approaches to weed management, where the benefits and costs are only considered within a single season, are inappropriate for assessing the economic benefits of weed control technologies. There are carryover effects from weed management as weeds that escape control in one season may reproduce and replenish weed populations in following seasons. Consequently, it is appropriate to view weed control in the context of a resource management problem where the goal is to determine the optimal inter-temporal level of weed control that maximises economic benefits over some pre-determined period of time. A dynamic optimisation model for weed control is presented. Using the tools of comparative static analysis and Pontryagin's...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123685

ESTRUTURA DE OFERTA E DE DEMANDA DERIVADA DA PRODUÇÃO DE FRANGOS DE CORTE NO BRASIL A PARTIR DE UMA FUNÇÃO LUCRO TRANSLOG
Provedor de dados: 31
Autores: Teixeira,   Evandro Camargos; Ferreira Filho,   Joaquim Bento de Souza.
Nos últimos anos, a produção de frangos de corte vem se consolidando como um dos setores mais dinâmicos do agronegócio brasileiro, particularmente em termos de produtividade e exportações. Esse trabalho tem como objetivo analisar a estrutura de oferta e de demanda derivada da produção de frangos de corte das principais regiões produtoras do país. Essa análise tem como base a estimação de uma função lucro translog normalizada e restrita (capital é um insumo fixo), e conseqüente cálculo das elasticidades-preço diretas, elasticidades-preço cruzadas e elasticidades de oferta. Além disso, a partir da função custo, são calculadas as elasticidades-preço cruzadas e as elasticidades de substituição de Allen e Morishima. Como resultado, conclui-se que os insumos...
Tipo: Presentation
Palavras-chave: Função Lucro Translog; Frangos de Corte; Oferta; Demanda derivada; Function Translog Profit; Chickens of Cut; Offers; Derived Demand; Agribusiness; Industrial Organization; Livestock Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/118713

Behavioral Salinity Response: Estimating Salinity Policies from Remote Sensed Micro-Data
Provedor de dados: 31
Autores: MacEwan,   Duncan; Howitt,   Richard E.
In arid regions, including Australia's Murray-Darling basin and California's Central Valley, increasing salinity is a problem affecting agriculture, regional economies, urban areas, and the environment. The direct costs of salinity to agriculture in the Murray-Darling basin and California’s Central Valley are on the order of $500 million per year. Policymakers want to design policies to effectively manage salinity and, as such, need to understand how farmers respond to changing salinity levels. Reduced crop yields account for the largest direct cost of salinity to agriculture however farmers are able to mitigate effects through field management. Consequently, there is a difference between experimentally estimated yield-salinity functions and those which...
Tipo: Presentation
Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2012
URL: http://purl.umn.edu/124331

Geographic Determinants of Preferences  along U.S. Crop Insurance Subsidy Schedule
Provedor de dados: 31
Autores: Du,   Xiaodong; Hennessy,   David A.; Feng,   Hongli.
Tipo: Presentation
Palavras-chave: Crop Production/Industries; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/124190

The Impact of NAFTA on Agricultural Commodity Trade: A Partial Equilibrium Analysis.
Provedor de dados: 31
Autores: Naanwaab,   Cephas B.; Yeboah,   Osei-Agyeman.
This paper examines the effects of the North American Free Trade Agreement on agricultural commodity trade using extensive data.  The data cover agricultural exports and imports between the U.S. and NAFTA partners over the extended period of 1989-2010.  The commodities covered in our analyses include; corn, soy bean, cotton, wheat, fresh vegetables, poultry, dairy products, and red meats.  Since the signing of the agreement, U.S. total agricultural commodity trade with NAFTA members has increased three-fold from $18 billion in 1994 to $61 billion in 2010.  A partial equilibrium model, in which we derive each trading partner's excess demand and excess supply, is used to study the impact of NAFTA on trade, controlling for other trade-inducing variables such...
Tipo: Presentation
Palavras-chave: NAFTA; Agricultural commodities; Trade; Partial equilibrium analysis; Agribusiness; Agricultural and Food Policy; Crop Production/Industries; International Relations/Trade; Marketing.
Ano: 2012
URL: http://purl.umn.edu/119730

Caribbean Food Import Demand:  Influence of the Changing Dynamics of the Caribbean Economy
Provedor de dados: 31
Autores: Walters,   Lurleen M.; Jones,   Keithly G.
Using FAO data for 1961-2009, this study characterizes the trends in Caribbean food imports and uses the Central Bureau Statistics demand system to estimate import demand parameters.  The findings and policy implications of the study are evaluated in the context of Caribbean food security concerns.
Tipo: Presentation
Palavras-chave: Caribbean; Food imports; Import demand parameters; Central Bureau Statistics demand system; Food security; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; International Relations/Trade; Q17.
Ano: 2012
URL: http://purl.umn.edu/119724

Determinants of Institutional Performance in Watershed Management: A Study of the Nature and Performance of WatershedDevelopment Institutions in Andhra Pradesh, India
Provedor de dados: 31
Autores: Gandhi,   Vasant P.; Crase,   Lin.
The study examines the nature and performance of watershed development institutions in India. Improving productivity and incomes in rainfed areas, which have much poverty, is a major challenge in India, and a huge initiative through which this is pursued is Watershed Development (WSD) programs which are massively funded by the Government of India, state governments and external donors. In watershed development, combining scientific approaches with community participation and knowledge is a major problem and requires effective institutions, which is a major weakness. The study examines the design and performance of watershed development institutions using new institutional economics, and management theory of governance. It analyzes data collected in a...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124307

A Numerical Stochastic Control model of Range Management
Provedor de dados: 31
Autores: Beard,   Rodney.
An optimal stochastic control model of grazing that incorporates both pasture and livestock dynamics is presented. The model is solved numerically using Markov chain approximation methods. Markov chain approximation methods have a number of advantages as a means of solving stochastic optimal control methods compared with the usual alternatives. In particular, optimal control of the approximating Markov chain may be determined using Linear programming methods, thus making optimal stochastic control methods accessible to a wider audience.
Tipo: Presentation
Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2000
URL: http://purl.umn.edu/123604

Consumer Income and Knowledge on Tax Status on Food and Beverages
Provedor de dados: 31
Autores: Zheng,   Yuqing.
Tipo: Presentation
Palavras-chave: Sales Tax; Consumer Income; Knowledge; Agricultural and Food Policy; Consumer/Household Economics; Public Economics; H25.
Ano: 2012
URL: http://purl.umn.edu/124185

Looking for Rational Bubbles in Agricultural Commodity Markets
Provedor de dados: 31
Autores: Gutierrez,   Luciano.
In this paper, we use a bootstrap methodology to helps us to compute the finite sample probability distribution of the asymptotic tests recently proposed in Phillips et al. (2009b) and Phillips and Yu (2009c). Simulation shows that the bootstrap methodology works well and allows us to identify explosive processes and collapsing bubbles. We apply the bootstrap procedure to the wheat and rough rice commodity prices. We find some evidence of price exuberance for both prices in the 2007-2008 period.
Tipo: Presentation
Palavras-chave: Rational Speculative Bubbles; Bootstrap; Unit Root Tests; Commodity Prices.; Marketing; G14; Q14; C12; C15.
Ano: 2011
URL: http://purl.umn.edu/120377

The validity of risk estimates elicited via the Exchangeability Method: An experimental investigation of consumers’ perceived health risks
Provedor de dados: 31
Autores: Cerroni,   Simone; Notaro,   Sandra; Shaw,   W. Douglass.
The validity of risk estimates elicited through the Exchangeability Method (EM) has been theoretically questioned because the use of chained questions may undermine the incentive compatibility of the game even when subjects are rewarded with real monetary incentives. In this paper, we examine the validity of stated risks elicited via the EM by using a laboratory experiment. The risk under study is the presence of pesticide residues in apples. Taking inspiration from the de Finetti’s notion of coherence, we consider risk measures as valid if and only if they obey all axioms and theorems of probability theory. Our experiment consists of four treatments: in the first, subjects are provided with real monetary incentives, but in the second, they are not. Each...
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/124100

The economic impact of water reductions during the Millennium Drought in the Murray-Darling Basin
Provedor de dados: 31
Autores: Kirby,   Mac; Connor,   Jeffery D.; Bark,   Rosalind H.; Qureshi,   Muhammad Ejaz; Keyworth,   Scott W.
The recent drought saw the lowest inflows on record in the Murray-Darling Basin in 2006. Water use by irrigation in 2007-8 and 2008-9 was about one third that of pre-drought levels. Understanding how irrigation adapted to less water is key both to provide information to help plan for the future and data for model calibration. Complicating this objective was the concurrent international food price crisis of 2008 and an increase in water trading in the basin. This presents a challenge in unpacking the effects of commodity price changes, input substitution, productivity gains and water trading from the effect of reduced water availability. In this paper we seek Our objective is to unpack the various effects. We used publicly available price and production...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124490

How Fast Do Urban Migrants Change Their Diets?
Provedor de dados: 31
Autores: Gibson,   John.
Rapid urbanization is a major cause of structural change in food demand. In West Africa, urbanization is associated with a switch from coarse grains to rice and wheat, in Melanesia the switch is from root crops to rice and wheat, while in much of Asia the switch is away from cereals (and within cereals to wheat). Although reasons why urban diets differ from traditional rural diets are well known, the rate at which recent arrivals from the countryside switch their diet has not been estimated. Evidence on the speed of this dietary change can help to show whether studies of urban food demand need to control for cohort effects and may also help producers forecast the size of their future urban markets. This paper uses cross-sectional household survey data from...
Tipo: Presentation
Palavras-chave: Food demand; Migration; Urbanization; Food Consumption/Nutrition/Food Safety; D12; O15.
Ano: 1999
URL: http://purl.umn.edu/123806

The Returns to Promotion of Healthy Choices in Tasmania: Are You in the Dark about the Power of Mushrooms?
Provedor de dados: 31
Autores: Alston,   Julian M.; Parks,   Joanna C.
The Australian Mushroom Growers Association (AMGA) has recently developed a revised marketing strategy to promote mushrooms using messages based on scientific findings about the nutrition and health consequences of regularly incorporating mushrooms into meals. This article evaluates impacts based on a test-market experiment in Tasmania. We use a difference-in-differences econometric methodology to quantify the program-induced shifts in demand, and we use the resulting estimates in a supply and demand modeling framework to quantify the effects of promotion-induced demand shifts on prices, quantities, and measures of economic well-being. We estimate a conservative benefit-cost ratio for Tasmanian producers of 7.6:1 if they were to bear the entire cost and...
Tipo: Presentation
Palavras-chave: Marketing.
Ano: 2012
URL: http://purl.umn.edu/124359

The Impact of Precision Agriculture Techniques on Kentucky Grain Farmers' Carbon Footprint
Provedor de dados: 31
Autores: Brown,   Rachael M.; Dillon,   Carl R.; Schieffer,   Jack; Shockley,   Jordan M.
This study estimates the carbon footprint of a Henderson County, Kentucky grain farmer under different production strategies; traditional farming and precision agriculture technologies. Four constrained optimization, whole farm analysis models were formulated under no-till conditions. One of the models was optimized without utilizing any precision agriculture techniques and was used as a base model to compare the other three models which incorporated precision agriculture technologies (PAT). The three technologies investigated include sub-meter auto-steer, RTK auto-steer and automatic section control (ASC). These models are used to analyze the different production systems to determine if said technologies increase expected net returns and enhance the...
Tipo: Presentation
Palavras-chave: Resource and Environmental Economics; Production Economics; Precision Agriculture; Farm Management; Policy; Agricultural and Food Policy; Environmental Economics and Policy; Farm Management; Production Economics; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119802

Net benefits from alternative feral goat management strategies in the western NSW rangelands
Provedor de dados: 31
Autores: Khairo,   Salahadin A.; Hacker,   Ronald B.
The western NSW rangeland is the pastoral zone of NSW, with increasing abundance and distribution of feral goats (Capra hircus). Feral goats are generally viewed as agricultural pests impacting on agricultural production and natural resources but they are also valuable economic resources that generate income for many pastoralists. This paper presents an economic analysis of alternative feral goat management strategies in the western NSW rangelands. We used benefit‐cost analysis to evaluate the Net Present Value (NPV) and Benefit Cost Ratio (BCR) of feral goat management strategies including do‐nothing, opportunistic harvesting, ‘value added goats’ and establishment of goat‐proof fencing on representative properties in the Bourke, Cobar and Broken Hill...
Tipo: Presentation
Palavras-chave: Economics; Feral goat; Management; Policy; NSW; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124322

ANALYSIS OF INTEGRATION BETWEEN QUEENSLAND FEED AND MALTING BARLEY MARKETS
Provedor de dados: 31
Autores: Gali,   Jyothi; Brown,   Colin G.
Barley can be differentiated into feed and malting barley based on its end-use markets. Substitutability both in supply and in demand complicates analysis of price information in the barley market. The paper examines the price linkages between feed and malting barley in the Queensland barley market by using cointegration and error correction models. Malting barley prices respond to restore equilibrium relationships with corresponding feed barley prices in the long run, but not vice versa. Thus there appears to be a price leadership role for feed barley, and one-way substitutability and quality differences in the barley market.
Tipo: Presentation
Palavras-chave: Barley; Cointegration; Substitutability; Quality; Demand and Price Analysis; Marketing.
Ano: 2000
URL: http://purl.umn.edu/123649

AGRICULTURAL MARKET IMPACTS OF THE ADAPTATION OF EU’S COMMON AGRICULTURAL POLICY (SPECIAL ATTENTION TO THE CASE OF HUNGARY)
Provedor de dados: 31
Autores: Velikovszky,   Laszlo; Halmai,   Peter.
The Eastern enlargement of the European Union is a historical move without precedent. The adaptation to the Common Agricultural Policy (CAP) has various impacts. The Eastern enlargement of the CAP raises the most problematic questions in the following areas of discussion:  Taking over of significantly higher CAP-prices;  Taking over of the “compensatory payments”;  Taking over supply control and management;  Budgetary impacts;  WTO-commitments. This paper systematically analyses these above-mentioned factors. Special attention is paid to the WTO-connections. It has to be underlined that the system of Agreement of Agriculture, the “modalities” laying the basis for the commitments have not properly taken the unique situation of the transitory economies...
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy; Marketing.
Ano: 2000
URL: http://purl.umn.edu/123735

A Theory of Dynamic Biofuel Tax Credit
Provedor de dados: 31
Autores: Ye,   Fanglin; Lu,   Liang; Du,   Xiaoxue.
In this paper, we set up a social cost minimization problem for a government. Using dynamic optimization tools, we analytically shows how exogenous parameters could affect the optimal social cost and the optimal tax credit policy path.
Tipo: Presentation
Palavras-chave: Optimal Control; Biofuel; Tax Credit; Environmental Economics and Policy; Resource /Energy Economics and Policy; Q42; Q48.
Ano: 2012
URL: http://purl.umn.edu/123750

Biofuels, Energy and Agriculture
Provedor de dados: 31
Autores: Downer,   Alexander.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/124484

Redefining economic efficiency using a case study of sugarcane harvest-transport systems. A job for pluralist thinking.
Provedor de dados: 31
Autores: Brennan,   Lisa E.
Despite the Queensland sugar industry’s status as a low-cost producer of sugar, there appears to be considerable scope to reduce costs by improving the efficiency of the cane harvesting and transport process, especially in the Mackay district. The key areas of inefficiency result from poor utilisation of both harvesting and mill transport equipment. Insights from the research approach used to address the key issues of this problem - the potential savings from raising the efficiency of sugarcane harvesttransport systems, and the failure of the Mackay district to adopt measures to improve the efficiency of its harvest-transport systems – are discussed in this paper.
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy.
Ano: 2000
URL: http://purl.umn.edu/123610

Disease Emergence and Food Security: Global Impact of Pathogens on Sustainable Aquaculture Production
Provedor de dados: 31
Autores: Walker,   Peter J.
Aquaculture is one of the most rapidly developing sectors of global food production, contributing significantly to socio-economic development by providing food security and export earnings from high-value products. The importance of the industry to the expanding world population is underscored by the growing gap between supply and demand for seafood. However, rapid growth in aquaculture has been accompanied by increasing problems with disease, and disease is now seen as a very significant threat to sustainable production and trade. During the past decade, disease has devastated prawn farming in Asia and Latin America, with annual losses of up to US$3 billion. Devastating losses have also hit the salmon farming industries of Europe and North America, the...
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 2004
URL: http://purl.umn.edu/124074

Sustainable diversion limits and climate change: results from an integrated economic – hydrology model of the Murray-Darling Basin
Provedor de dados: 31
Autores: Kirby,   Mac; Mainuddin,   Mohammed; Gao,   Lei; Ahmad,   Mobin-ud-Din.
Climate change and the proposed Murray-Darling Basin Plan both result in less water for irrigation. Climate change is projected to take water from all uses including the environment, whereas the likely sustainable diversion limit in the Plan aims (amongst other things) to return water to the environment. We examine the impact on flows and the returns to irrigation of potential reductions in irrigation allocations, and the interaction with projected climate change impacts. Our analysis is based on an integrated hydrology – economics model of the Murray- Darling Basin, described in Kirby et al. (2012a). The model can quickly and easily run new climate or other scenarios, accounting for flows at key environmental assets. It uses a statistically calibrated...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124309

Coping with Systemic Risk in Index-based Crop Insurance
Provedor de dados: 31
Autores: Shen,   Zhiwei; Odening,   Martin.
The implementation of index-based crop insurance is often impeded by the existence of systemic risk of insured losses. We assess the effectiveness of two strategies for coping with systemic risk: regional diversification and securitization with catastrophe (CAT) bonds. The analysis is conducted in an equilibrium pricing framework which allows the optimal price of the insurance and the number of traded contracts to be determined. We also explore the role of basis risk and risk aversion of market agents. The model is applied to a hypothetical area yield insurance for rice producers in northeast China. If yields in two regions are positively correlated, we find that enlarging the insured area leads to an increasing insurance premium. Unless capital market...
Tipo: Presentation
Palavras-chave: Crop insurance; Systemic risk; Risk pooling; Securitization; Risk and Uncertainty; Q11; Q14.
Ano: 2012
URL: http://purl.umn.edu/122555

Enhancing Critical Thinking in Economics Using Team-Based Learning
Provedor de dados: 31
Autores: Espey,   Molly.
While critical thinking may be difficult to define, development of critical thinking skills is a principle goal of education, particularly higher education.  It is vital that college graduates can question assumptions, synthesize information, evaluate evidence, draw inferences, and make reasoned arguments.  Critical thinking skills do not improve without practice; effective teaching methods engage students with course material and each other, challenging them to think through issues and problems relevant to the real world.  Engagement or problem solving alone, however, does not guarantee improved critical thinking.  This study evaluates the impact of one alternative teaching method, team-based learning, on students’ perceptions of the development of...
Tipo: Presentation
Palavras-chave: Economic Education; Economics; Education; Pedagogical; Pedagogy; Teaching; Teaching of Economics; Teaching/Communication/Extension/Profession; A200; A220.
Ano: 2012
URL: http://purl.umn.edu/123521

INPUT CONTROL AND INFORMATION ASYMMETRY
Provedor de dados: 31
Autores: Goodhue,   Rachael E.; Simon,   Leo K.
Tipo: Presentation
Palavras-chave: Asymmetric Information Input Control; Demand and Price Analysis; Labor and Human Capital.
Ano: 2000
URL: http://purl.umn.edu/123654

Governance for Integrated Water Resources Management in a River-Basin Context: Proceedings of a Regional Seminar, Bangkok, May 2002
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Water resource management; River basins; Governance; Institutional development; Groundwater irrigation; Water policy; Water allocation; Water demand; Irrigation efficiency; Models; Case studies; Institutional and Behavioral Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/118402

The Role of Mining in an Australian Business Cycle Model
Provedor de dados: 31
Autores: Veroude,   Alexandra.
The purpose of this paper is to evaluate a business cycle model that includes a mining sector, with the cyclical variations of the Australian Economy. Large quantities of mineral deposits are found in Australia and there exists high demand for these minerals from developing nations. This results in the mining sector contributing to a high proportion of GDP. Surprisingly, the inclusion of a mining sector has not previously been studied in a business cycle model. Australia is a small open economy however, due to a lack of prior literature then, as a first attempt, we assume an economy without a foreign sector. The model built upon a neoclassical growth model, and results were simulated from solving this model via the Blanchard-Kahn method. The statistics...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124473

Dynamic Analyses of Major Fruit Markets in Taiwan
Provedor de dados: 31
Autores: Hsu,   Jane Lu; Su,   Jyh-Luen.
Fruit production and consumption have increased considerably in the past few decades in Taiwan. Market prices of fruits fluctuate in response to seasonality, changes in production costs, imports and exports, and demand. Some factors are more influential to fruit price changes. This research utilizes the Vector Autoregressive Model to analyze effects of exogenous shocks to market prices of fruits. Dynamic models were developed for bananas, grapes, guavas, papayas, pineapples, and watermelons. For the market of bananas, prices of pesticides have delayed positive effects; an increase of watermelon prices raises the prices of bananas; prices of banana exports explain some variations of domestic banana prices. For the market of grapes, income, interest rates,...
Tipo: Presentation
Palavras-chave: Dynamic analysis; Fruit market; Crop Production/Industries; Marketing.
Ano: 2000
URL: http://purl.umn.edu/123664

Livestock Dynamics: An Old Problem and Some New Tools
Provedor de dados: 31
Autores: MacAulay,   T. Gordon; Hertzler,   Greg.
A problem encountered in the econometric estimation of dynamic models of livestock systems is dynamic instability during simulation of models. In the case of systems where economic decisions are involved in the breeding and the slaughter of animals it is possible for parameters to be obtained which generate dynamic instability. In the paper, a simple representation of the dynamics of a livestock system is examined using techniques of dynamic analysis. The dynamic stability of such models depends fundamentally on the parameters determining the births and deaths and thus the relative flows in and out of the stock of animals. In some situations very narrow stability ranges for the values of the parameters are observed.
Tipo: Presentation
Palavras-chave: Dynamic models; Beef herd; Dynamic instability; Dynamic processes; Livestock Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123699

Measuring the Effect of Education and Influence on Female Employment and Empowerment:  Evidence from India
Provedor de dados: 31
Autores: Kandpal,   Eeshani; Baylis,   Katherine R.; Arends-Kuenning,   Mary.
This paper shows that participation in a community-level female empowerment program in India significantly increases access to employment, physical mobility, and political participation.  The program provides support groups, literacy camps, adult education classes, and vocational training.  We use truncation-corrected matching and instrumental variables on primary data to disentangle the program's mechanisms, separately considering its effect on women who work, and those who do not work but whose reservation wage is increased by participation.  We also find significant spillover effects on non-participants relative to women in untreated districts.  Using instrumental variables and matching, we find consistent estimates for average treatment and intent to...
Tipo: Presentation
Palavras-chave: Consumer/Household Economics; International Development.
Ano: 2012
URL: http://purl.umn.edu/123705

Introduction of conservation tillage methods into dryland graingrowing districts in Shanxi Province, PRC
Provedor de dados: 31
Autores: Wegener,   Malcolm K.; Tullberg,   J.N.; Pearson,   L.E.
Dryland grain farmers in some 30 counties in Shanxi Province, Peoples Republic of China, are now practising some form of conservation tillage farming following a successful research and technology transfer project. While this represents only 5 percent of graingrowing land in the province, it marks the start of a trend that will lead to major changes in farming in China if the apparently attractive economics of conservation farming are confirmed. As well as the trend to conservation tillage farming in Chinese agriculture, there are other fundamental changes occurring. With the introduction of mechanisation, there are incentives to increase farm size and the structural changes that could flow from this could see farm workers displaced. The cost savings from...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123738

Chinese Market Access Barriers of U.S Oilseeds and Grains
Provedor de dados: 31
Autores: Yeboah,   Osei-Agyeman; Appiah-Danquah,   Gloria.
China was admitted into the WTO in December 2001 and this raised the hopes of the US that China will open up to agricultural trade with the US. However, this potential has not been realized. The goal of this study is to determine the impacts of trade impediments and barriers of the market access of US oilseeds and grains in China. A market access variable that was obtained by dividing the total value of U.S soybean and corn exports to China by U.S agricultural G.D.P was regressed on China’s per capita income, exchange rate of the yuan to the dollar, arable land to labor ratio in the U.S and a dummy variable representing China’s WTO accession. The result found per capita income to have a positive impact on market access of U.S oilseeds and grains in China....
Tipo: Presentation
Palavras-chave: Market Access; Market Access Barriers; U.S Oil seeds and Grains; Import; International Development; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/119794

POSSIBILITIES AND LIMITS TO THE LIBERALISATION OF INTERNATIONAL AGRICULTURAL TRADE IN THE WTO MILLENIUM ROUND (SPECIAL ATTENTION TO THE TRANSITORY ECONOMIES)
Provedor de dados: 31
Autores: Halmai,   Peter.
Through the comprehensive regulation international agricultural trade, the GATT Uruguay Round was already a significant move towards the elimination of market distorting factors/barriers. But the Agreement of Agriculture was only the first step on this long path and at the same time certain internal contradictions were generated:  Due to the “dirty tariffication” the heavy protectionist countries could still impose high import duties;  The mechanism for limiting domestic subsidies has not proven to be efficient;  Certain hidden subsidies- such as export loans – were not included in the liberalisation system etc. The new WTO Round starting at the end of 1999 offers again the chance to further reduce the market distorting barriers. However, the planned...
Tipo: Presentation
Palavras-chave: International Relations/Trade.
Ano: 2000
URL: http://purl.umn.edu/123657

On Trade Impact of Exchange Rate Volatility and Institutional Quality: The Case of Central European Countries
Provedor de dados: 31
Autores: Ferto,   Imre; Fogarasi,   Jozsef.
This paper explores the effect of exchange rate volatility and of the institutional quality on international trade flows of transition economies in Central European Countries by applying a gravity model of balance panel between 1999 and 2008. The results show that nominal exchange rate volatility has had a significant negative effect on trade by applying Psuedo-Maximum-Likelihood (PML) estimator method over this period. The institutional quality need to be improved in case of size of government and the quality of regulation. The negative effect of exchange rate volatility on agricultural exports suggests that joining Central European Countries to the euro zone can reduce the negative effects of exchange rate volatility on trade.
Tipo: Presentation
Palavras-chave: International trade; Gravity model; Exchange rate volatility; Institutions.; International Relations/Trade; Risk and Uncertainty; G10; F11; O17; Q17; P29.
Ano: 2012
URL: http://purl.umn.edu/122510

Olive Oil - Make it for Market
Provedor de dados: 31
Autores: Davies,   Gerry; Cook,   Venton.
There has been an average annual (compound) growth rate of olive oil imports of around 15% over the past ten years but it seems reasonable to assume that the growth rate of demand will start to level off. There is a slowing of total olive oil imports to around 22,000 tonnes by 2006, of which about 4,500 tonnes will be virgin olive oil. It is this smaller premium market which the majority of growers are targeting. This paper considers marketing needs of olives from an industry rather than an individual business perspective. As more groves come into production, there is a new set of challenges that may be better dealt with on a collective basis.  The growth in interest in olive oil production is driven by the high prices ($22 to $65/ litre) which are...
Tipo: Presentation
Palavras-chave: Marketing.
Ano: 1999
URL: http://purl.umn.edu/123799

Consumer Preferences for Refrigerators Manufactured by “Climate Leaders”
Provedor de dados: 31
Autores: Li,   Xiaogu; Clark,   Christopher D.; Jensen,   Kimberly L.; Yen,   Steven T.
In 2002, EPA established a voluntary program called the Climate Leaders Program (CL Program) designed for organizations to complete a corporate greenhouse gas (GHG) inventory, set a goal for reducing GHG emissions, and achieve that goal.  The program was never implemented as a product labeling program. In 2010, EPA announced the program’s phase out. This study examines whether the CL Program could have been effectively used as a consumer product labeling program to assist consumers in choosing products manufactured by firms that have voluntarily set and achieved targeted GHG emission reductions.
Tipo: Presentation
Palavras-chave: Consumer Preferences; Climate Leaders; Willingness-to-Pay; Environmental Economics and Policy; Q50; Q58.
Ano: 2012
URL: http://purl.umn.edu/123756

Overcoming Asian Poverty: What Australia is Doing
Provedor de dados: 31
Autores: Downer,   Alexander.
Tipo: Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2001
URL: http://purl.umn.edu/124429

More empirical evidence on the adoption of chick peas in Western Australia. or: Different ways of thinking about nothing.
Provedor de dados: 31
Autores: Abadi Ghadim,   Amir K.; Burton,   Michael P.; Pannell,   David J.
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/121986

How direct payments and their reform have affected farm income inequality in Italy?
Provedor de dados: 31
Autores: Severini,   Simone; Tantari,   A.
Farm direct payments (DPs) have been the main instrument of the Common Agricultural Policy (CAP) to support farm income in the EU. After the decoupling of DPs from production levels, the distributional objectives are among the major justifications of DPs. This paper addresses their role in the distribution of farm inc come among farmers. The analysis accounts direct payments granted in the context of the market and income supp port policies and of rural development policies. Using the Gini coefficient and its d disaggregation, this study investigates the impact of b both kinds of payments on farm income inequality among a large sample of farms in Italy. The analysis is developed a at a national level but also considering the three main regions of Italy and...
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 2012
URL: http://purl.umn.edu/124099

Variety Choice by Australian Wheat Growers and Implications for Genetic Diversity
Provedor de dados: 31
Autores: Brennan,   John P.; Godden,   David P.; Smale,   Melinda; Meng,   Erika C.H.
Genetic diversity in agricultural systems relies on both the supply of diversity through varieties produced by breeding programs, and the demand for that diversity, through farmers' usage of varieties. Variety choice by farmers is demonstrated through the mix of varieties that is grown in a given region. In this paper, the conceptual issues relating to the supply of and demand for genetic diversity are explored. An empirical analysis of the varietal demand, based on the varieties grown in the Temora Shire in southern NSW over the post-War period, is undertaken. Changes over time in the choice of varieties by farmers are analysed, and some implications for genetic diversity are discussed.
Tipo: Presentation
Palavras-chave: Genetic/diversity/wheat/variety/demand/growers; Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123785

Assessing the potential impact of strengthening food safety regulations on developing countries: The US Food Safety and Modernization Act
Provedor de dados: 31
Autores: Mosquera,   Mauricio; Evans,   Edward A.; Walters,   Lurleen M.; Spreen,   Thomas H.
This paper’s goal is to assess the extent to which producers in Developing Countries have coped stricter US food safety regulations. We approach the question by calculating refusals/imports ratios and their trends for a sample of Developing Countries. We conclude there is a learning process in low value added products.
Tipo: Presentation
Palavras-chave: Food safety; Traceability; Value chain analysis; Trade; Latin America and the Caribbean; Food Consumption/Nutrition/Food Safety; International Development; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/119711

Advertising and Australian Pig Producers Welfare
Provedor de dados: 31
Autores: Zhang,   Lin; Goddard,   Ellen W.
The pig meat market in Australia is characterized by generic (fresh pork, bacon etc.) advertising. These advertising expenditures are funded from collective levies from pig producers. At the same time, there are extensive brand advertising activities in the pig market. Impact of advertising on pig meat consumption has been a long-standing argument. So far, there have been several studies done on the effectiveness of generic pork advertising in Australia up to 1988. However, the previous studies only looked at generic advertising and didn’t account for other media information as brand advertising and fast food advertising effects on pork consumption. As well, the previous studies are contradictory about the effects of generic pork advertising.  In this...
Tipo: Presentation
Palavras-chave: Agribusiness; Marketing.
Ano: 2000
URL: http://purl.umn.edu/123744

Conceptualizing Multifunctional Agriculture from a Global Perspective
Provedor de dados: 31
Autores: Moon,   Wanki.
The notion of multifunctional agriculture has been actively researched from diverse disciplines including economics, ecology, sociology, and geography since emerged out of the Uruguay Round in the 1990s.  In particular, the economics approach represents an attempt to tailor the concept of multifunctional agriculture to market-oriented WTO trade regime.  The economics approach has been fundamentally troubled by the lack of concord among WTO member countries on the question of what constitutes multifunctional agriculture.  Upon examining how differently the notion of multifunctional agriculture is perceived across the US, the EU, the Cairns group, the LDCs, and the developed food-importing countries (the G10), this article theorizes that multifunctional...
Tipo: Presentation
Palavras-chave: Multifunctional agriculture; Global governance of agriculture; WTO; Agricultural trade; International Development; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/119751

A THRESHOLD VALUE ANALYSIS OF PROPOSED FOREST RESERVES
Provedor de dados: 31
Autores: Bennett,   Jeffrey W.
Threshold Value Analysis (TVA) may be a useful input into natural resource decision making when non-market values are involved. The decision rule under a TVA is to protect a natural resource if the (non-marketed and unquantified) benefits so arising are deemed to be greater than a threshold value defined by the (marketed and quantified) developmental benefits foregone. In this paper, threshold values are calculated for a range of forest protection options being considered under the Regional Forestry Agreements being negotiated in New South Wales. A static analysis is first undertaken. This is then enhanced by the incorporation of factors that affect the alternative streams of value through time. Extensive sensitivity testing to demonstrate the impact of...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123768

30th Annual Conference - Australian Agricultural Economics Society, Canberra, 3-5 February 1986
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1986
URL: http://purl.umn.edu/118914

Brokers vs. Retailers: Evidence from the French Imports Industry of Fresh Produce.
Provedor de dados: 31
Autores: Latouche,   Karine; Rouviere,   Elodie.
There is burgeoning discussion in the literature about trade intermediaries and more precisely about their specific role in trade. Using very original data, our article sheds light on the behavior of trade intermediaries when importing fresh fruits and vegetables in France. To do so, we distinguish the shares of direct and indirect imports of fresh produce respectively operated through French brokers and through French retailers. Accounting for the bounded nature of the share, we show that brokers are more likely than retailers to operate in small countries with high variable costs.
Tipo: Presentation
Palavras-chave: Mporters; Intermediation; Fresh produce; International Trade.; Industrial Organization; International Relations/Trade; F23; Q17; Q18.
Ano: 2012
URL: http://purl.umn.edu/123331

Analysis of Participation in Multifunctional Agriculture:  U.S. Rice Farms
Provedor de dados: 31
Autores: Tur Cardona,   Juan; Wailes,   Eric J.; Dixon,   Bruce L.; Danforth,   Diana M.
Multifunctional agriculture is particularly fundamental to some working lands conservation policies and programs, such as the Environmental Quality Incentive Program (EQIP), Conservation Security Program (CSP) and Wildlife Habitat Incentive Program (WHIP). Farmers can also be engaged in providing recreational and agri-tourism services such as hunting, fishing, bird-watching, farm tours, petting zoos and hospitality services. Using the Agricultural Resource Management Survey (ARMS) we analyze factors associated with participation in conservation, recreation and agri-tourism activities as a function of farm structure, farm financial measures, production practices, and socio-demographic characteristics of the farm operator. To estimate the functional...
Tipo: Presentation
Palavras-chave: Multifunctional agriculture; Agri-environmental policy; Rice; Logistic model; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Land Economics/Use; Q18; Q26; Q28.
Ano: 2012
URL: http://purl.umn.edu/119750

Willingness to Pay for Imported Beef and Risk Perception: An application of Individual-Level Parameter
Provedor de dados: 31
Autores: Lim,   Kar Ho; Hu,   Wuyang; Maynard,   Leigh J.; Goddard,   Ellen W.
The controversy surrounding the Mandatory Country-of-Origin Labeling (COOL) has attracted research attentions. A number of studies have reported consumers are willing to pay more for beef labeled with U.S. origin versus beef from unknown or other origins. Despite that, relatively little is known about what motivates consumers’ preference for origin-labeled food products (Lusk et al 2006). Using Individual-Level Parameters following a mixed logit model, we found that U.S. consumers were willing to pay significantly less for imported steak from Australia and Canada compare to U.S. steak. Further, we found that the negative willingness to pay is associated strongly with consumers’ perception of food safety on the exporting country.
Tipo: Presentation
Palavras-chave: Beef; Country of origin; Mixed logit; Individual-level parameters; Stated choice experiment; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Marketing; Q13; Q18.
Ano: 2012
URL: http://purl.umn.edu/119755

What is the Difference in Profit per Acre between Organic and Conventional Coffee?
Provedor de dados: 31
Autores: Jensen,   Jennifer; Dicks,   Michael R.
The research addresses the economic problem of deforestation.  A contributing factor to deforestation is coffee production. Coffee is an indigenous plant that is naturally occurring in the native tropical forests. However, conventional coffee is grown on cleared forest soil. In the native forest there is the potential for additional fruits (bananas, mangoes, avocados) and wood products while in the conventional coffee production system the only product is coffee.  Conventional coffee production often causes deforestation and soil erosion while the organic coffee production system does not. In addition, the price risk associated with the coffee monoculture is high and has proven disastrous to the sustainability of coffee production in past years. Thus,...
Tipo: Presentation
Palavras-chave: Coffee; Inputs; Outputs; Species variation; Costa Rica; Organic; Conventional; Agribusiness; Crop Production/Industries; Environmental Economics and Policy; International Relations/Trade; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/119864

Spot and Futures Prices of Agricultural Commodities: Fundamentals and Speculation
Provedor de dados: 31
Autores: Baldi,   Lucia; Peri,   Massimo; Vandone,   Daniela.
This paper investigates the long-run relationship between spot and futures prices for corn and soybeans, for the period January 2004 -September 2010. We apply cointegration methodology in the presence of potentially unknown structural breaks in the commodities prices and we then study the causality relationships between spot and futures prices within each specific sub-period identified, with the aim to analyze where changes in spot and futures price originate and how they spread. Empirical estimates highlight the following evidence: i) breaks relate to events that have significantly affected the supply and demand of corn and soybeans for food and energy purposes; ii) subperiods consequently identified express different dynamics in the causal relationship...
Tipo: Presentation
Palavras-chave: Commodity; Futures markets; Price discovery; Cointegration; Structural breaks; Agribusiness; Agricultural and Food Policy; Productivity Analysis; C32; G13; G14; Q11.
Ano: 2011
URL: http://purl.umn.edu/122002

Impacts of Farmer Attitude on the Design of a Nutrient Reduction Policy – a New Zealand Catchment Case Study
Provedor de dados: 31
Autores: Samarasinghe,   Oshadhi; Daigneault,   Adam J.; Greenhalgh,   Suzie; Munguia,   Oscar Montes de Oca; Walcroft,   Jill.
This paper uses responses from a regional farmer survey that identify farmers’ perceptions of environmental policies to calibrate a catchment-level environmental economic model (NZ-FARM) to estimate the impacts of a nutrient reduction policy in North Canterbury, New Zealand. The model maximizes farm income across a catchment, accounting for changes in land use, farm output, nutrient leaching, and GHG emissions. Simulations estimate that reducing nutrient loads by 15–30% can be achieved with economic impacts ranging between 1 and 10%, based on how willing landowners are to change how they manage their farm. Farmers are often hesitant to implement certain mitigation options, however, which results in higher economic costs than the ‘optimal’ estimates....
Tipo: Presentation
Palavras-chave: Agriculture and forestry modelling; Land use; Nutrient budgeting; Water quality; Greenhouse gas emissions; Farmer perception towards policy; Agricultural and Food Policy.
Ano: 2012
URL: http://purl.umn.edu/124439

A bioeconomic model of carbon trading within an Australian grazing enterprise
Provedor de dados: 31
Autores: Gowen,   Rebecca; Rolfe,   John; Donaghy,   Peter.
The Carbon Farming Initiative (CFI) and other carbon trading programs have been promoted as alternative sources of income for agricultural producers, particularly those on marginal land. This paper presents the results of a bioeconomic model developed to compare the relative returns from a beef enterprise against changing regrowth management practices to sequester additional carbon and sell carbon offsets. The model is constructed based on a 1000 hectare parcel of land in Central Queensland and is calculated for two landtypes; Brigalow and Eucalypt. Assuming zero transaction costs and a 20 year contract period, a carbon-cattle enterprise has higher returns that a cattle-only enterprise at relatively low carbon prices for both land types. However, results...
Tipo: Presentation
Palavras-chave: Carbon; Bioeconomic modelling; Grazing economics; Environmental Economics and Policy; Livestock Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124311

Private Forest Landowners’ Response to Incentives for Carbon Sequestration
Provedor de dados: 31
Autores: Kim,   Taeyoung; Langpap,   Christian.
Tipo: Presentation
Palavras-chave: Intermediate Forest Management; Carbon Sequestration; Incentive Payments; Price of Carbon; NIPF; Fuel Treatment; Fertilization; Environmental Economics and Policy; Farm Management; Land Economics/Use; Q23; Q54.
Ano: 2012
URL: http://purl.umn.edu/124362

Do Health Beliefs or Food Technology Neophobia Affect Canadian Consumer Interest in Purchasing Health Enhanced Dairy Products?
Provedor de dados: 31
Autores: Allen,   Shannon; Goddard,   Ellen W.; Farmer,   Anna.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123982

Forests, Education and the World: A Student’s Perspective
Provedor de dados: 31
Autores: Leslie,   Emma.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy; Teaching/Communication/Extension/Profession.
Ano: 2005
URL: http://purl.umn.edu/124422

Subsistence farmer preferences for alternative incentive policies to encourage the adoption of conservation agriculture in Malawi: A choice elicitation approach
Provedor de dados: 31
Autores: Marenya,   Paswel Phiri; Smith,   Vincent H.; Nkonya,   Ephraim M.
Land degradation in most sub Saharan Africa is a widely recognized problem and is due in large part to poor land management practices. To address this problem, several policy-based incentives to increase the adoption of better land management practices have been proposed, including fertilizer subsidies, cash payments and, more recently, subsidized or commercially offered weather index-based insurance contracts. However, little is known about farmers’ preferences among these policy alternatives, their relative effectiveness, and their likely fiscal implications. Using survey and choice elicitation data from 271 farmers in Central Malawi, this study examines smallholder farmers’ preferences among four major policy options that provide incentives for adopting...
Tipo: Presentation
Palavras-chave: Choice elicitation; Cash transfer; Fertilizer subisdy; Incenitves; Indemnity insurance; Malawi; Agricultural and Food Policy; International Development; Q12; Q24.
Ano: 2012
URL: http://purl.umn.edu/124010

Direct payments, crop insurance and the volatility of farm income. Some evidence in France and in Italy
Provedor de dados: 31
Autores: Enjolras,   Geoffroy; Capitanio,   Fabian; Aubert,   Magali; Adinolfi,   Felice.
Volatility of farm income represents a major challenge for farm management and the design of public policies. This paper measures the extent to which risk management tools, especially direct payments and crop insurance, can significantly reduce crop income volatility in France and in Italy. We use an original dataset of 9,555 farms for the period 2003-2007 drawn up from the Farm Accountancy Data Network (FADN) and three different econometric models to explain the volatility of crop income. The results are contrasted between the specialization of the farms and the two countries: Italian farms use management tools (CAP payments and crop insurance) so as to improve their income and to reduce its volatility (crop insurance, inputs). French farms use the same...
Tipo: Presentation
Palavras-chave: Volatility; Direct payments; Insurance; France; Italy; FADN; Risk and Uncertainty; G22; Q14; Q18.
Ano: 2012
URL: http://purl.umn.edu/122478

Global Status of Genetically Modified Crops: Current Trends and Prospects
Provedor de dados: 31
Autores: Hautea,   Randy A.
Modern biotechnology-facilitated crop improvement is undoubtedly one of the most significant technological developments in agriculture. The first wave of genetically-modified (GM) or transgenic crops include cultivars with important input traits such as herbicide tolerance and insect resistance. Future products are expected to provide benefits that could include tolerance to environmental stresses and enhanced nutritional content, which can be particularly valuable in crops that are important to many developing countries, where the challenges of sustainable food production are more critical. Rates of adoption of GM crops are unprecedented and are among the highest for any new technologies by agricultural industry standards. The global area of GM crops...
Tipo: Presentation
Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 2002
URL: http://purl.umn.edu/123928

Designing REDD+ Schemes to Address Permanence Concerns: Empirical Evidence from Kenya
Provedor de dados: 31
Autores: Veronesi,   Marcella; Schlondorn,   Tim; Zabel,   Astrid; Engel,   Stefanie.
Reducing Emissions from Deforestation and Forest Degradation (REDD+) is an important topic in the debate on policies to mitigate climate change. This is the first study to test and compare the environmental impact of different REDD+ payment schemes in the field, and provide some insights on the effectiveness of different policies with respect to the permanence of forest-based emission reductions. This study implements a stated preference experiment of time allocation in the unique setting of the Kasigau Corridor REDD+ Project in Kenya, where charcoaling is a major source of forest degradation. The impact on time allocation is analyzed under the presumption that a hypothetical agricultural policy or an eco-charcoaling policy was introduced. We find that a...
Tipo: Presentation
Palavras-chave: REDD; Permanence; Deforestation; Labor; Kenya; International Development; I38; J22; O13; Q18; Q23; Q28; Q56.
Ano: 2012
URL: http://purl.umn.edu/124131

Production Profitability of Ethanol from Alternative Feedstocks in the Texas Panhandle
Provedor de dados: 31
Autores: Almas,   Lal K.; Lust,   David G.; Brooks,   Kathleen R.; Girase,   J.R.
The potential of three feedstocks: grain sorghum, sweet sorghum, and switchgrass for ethanol production in the top 26 counties of the Texas Panhandle Region is analyzed using yield and production costs of feedstock, processing cost of feedstock, final demand for ethanol, farm to wholesale marketing margin, and the derived demand price of feedstock.   The calculated economic returns per acre of grain sorghum, sweet sorghum, and switchgrass are -$45.37, -$410.19, and -$150.17 respectively under irrigated condition and -$38.25, -$145.09, and -$29.04 respectively under dryland condition.   The evaluation in this study demonstrates that ethanol production from grain sorghum, sweet sorghum, and switchgrass in the Texas Panhandle Region is not economically...
Tipo: Presentation
Palavras-chave: Ethanol production; Texas Panhandle; Grain sorghum; Sweet sorghum; And Switchgrass; Feedstock; Crop Production/Industries; Production Economics; Resource /Energy Economics and Policy; Q16; Q25; Q27; And Q42.
Ano: 2012
URL: http://purl.umn.edu/119723

Effects of Trade Openness on Economic Growth: The Case of African Countries
Provedor de dados: 31
Autores: Yeboah,   Osei-Agyeman; Naanwaab,   Cephas B.; Saleem,   Shaik; Akuffo,   Akua S.
The relationship between trade and productivity has not been established theoretically.  Some researchers have indeed found some, if not complete, support for the view that increasing openness has a positive impact on productivity.  This study used a Cobb-Douglas production function as in Miller and Upadhyay (2000) to estimate the impact of FDI, exchange rate, capital-labor ratio and trade openness on GDP for 38 African countries from 1980 to 2008.  Data were transformed to natural logs and estimated   using alternative panel models; which included one- or-two-way fixed or random effects models.  The results found trade openness having a positive relationship with GDP; which is comparable to findings of Ahmed et al.; (2008).
Tipo: Presentation
Palavras-chave: Trade Openness; Productivity; Africa; Cobb Douglas Production Function.; International Development; International Relations/Trade; Productivity Analysis.
Ano: 2012
URL: http://purl.umn.edu/119795

How strong is the “natural hedge”? The effects of crop acreage and aggregation levels
Provedor de dados: 31
Autores: Finger,   Robert.
The level of natural hedge, i.e. the (negative) correlation between price and yield levels, is an important determinant for farmers’ income risks and their demand for risk management instruments. The natural hedge is often approximated with correlations observed at more aggregated levels, e.g. the county level. This induces biases because the natural hedge at the farm-level is smaller than on more aggregated levels. In this paper, we put this idea one step forward and investigate the empirical relationship between price-yield correlations and the underlying crop acreage, using farm-level data for 5 crops in Switzerland. We find that, for instance, a 1% increase in area under maize and intensive barley leads to a change in the correlation by -0.02 and...
Tipo: Presentation
Palavras-chave: Price-yield correlation; Aggregation bias; Crop insurance; Risk and Uncertainty; Q1; G2.
Ano: 2012
URL: http://purl.umn.edu/122538

Identifying Financially Versatile Milk Production Systems
Provedor de dados: 31
Autores: Anderson,   Duncan J.; Jack,   Claire G.; Connolly,   Niamh.
The European dairy industry faces an increasingly uncertain world. There is uncertainty about, for example, subsidy payment levels and compliance conditions, global competition, price variability, consumer demand, carbon footprints, water quality, animal welfare, food safety, and the environment. Farmers can reduce their exposure to these uncertainties by adopting production systems that are financially versatile over a wide range of possible circumstances. In this research project we develop a profit maximizing whole-farm model and employ it to identify financially optimal milk production systems for a typical Northern Ireland farm under varying market, policy and farm family conditions. The systems assessed range from lower yielding New Zealand type...
Tipo: Presentation
Palavras-chave: Farm modelling; Production systems.; Farm Management; Risk and Uncertainty; Q12 and Q16.
Ano: 2012
URL: http://purl.umn.edu/122460

Eyes Wide Shut!
Provedor de dados: 31
Autores: Gwynne,   Beris; Binning,   Parmjeet.
Eight hundred million of the world’s 6 billion people don’t have access to adequate nutrition. With world population expected to peak at 7–8 billion within a generation, mostly in developing countries, and with environmental degradation and future water shortages to consider, pressure is on to find ways to improve food security. The question is whether GMOs offer the best prospects of improved food security for the world’s hungry within the context of sustainable development and limited resources. Progress on a number of other fronts holds more promise than GMOs. Nobel Prize-winning economist Amartya Sen has argued that the problem is one of food distribution, not supply. To these, add the ongoing debate about levels of agricultural subsidies in...
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 2002
URL: http://purl.umn.edu/123935

An Economic Evaluation of the Benefits from Import Clearance Activities in Western Australia
Provedor de dados: 31
Autores: Cook,   David C.
Quarantine trade restrictions enforced on agricultural commodities are both a safety measure and a form of subsidy to local producers. With appropriate strategies in place the risk posed to domestic production systems from exotic pests and diseases is reduced. This often means importers of agricultural commodities are effectively taxed, with negative effects on consumer welfare. Hence, analysis of quarantine policy decisions involves a comparison of notional production gains against social welfare loss. Given the large variety of agricultural industries and the virtually endless list of exotic pests deemed as “threatening” to domestic industries, there is a continuum of problems of this type. In some instances the effects of quarantine policies will be...
Tipo: Presentation
Palavras-chave: International Relations/Trade.
Ano: 2000
URL: http://purl.umn.edu/123628

Land Fragmentation, Market Integration and Farm Efficiency: Empirical Evidence from Kosovo
Provedor de dados: 31
Autores: Sauer,   Johannes; Davidova,   Sophia; Gorton,   Matthew.
This paper investigates the effect of land fragmentation on farm efficiency in Kosovo utilising agricultural household survey data. To recognise heterogeneity among agricultural production systems in Kosovo, we estimate the technology separately for different groups or “classes” of farms, identified using latent class modelling. This approach separates the data into multiple technological “classes” according to estimated probabilities of class membership based on multiple specified characteristics, relating in this case to land fragmentation and market integration. The latent class frontier method is linked to the estimation of a multi-output multi-input production function, namely a directional output distance function, and to the estimation of Morishima...
Tipo: Presentation
Palavras-chave: Land fragmentation; Market integration; Farm households; Kosovo; Agricultural and Food Policy; Production Economics; Productivity Analysis; O13; Q12.
Ano: 2012
URL: http://purl.umn.edu/123236

An Empirical Investigation into the Determinants of Trade Policy Bias
Provedor de dados: 31
Autores: Hink,   Matthew J.; Cardwell,   Ryan T.; Lawley,   Chad.
There exists an extensive literature that attempts to identify important factors that determine trade policies.   An understanding of these important factors could be useful when negotiating trade agreements, especially in agriculture, which is a relatively heavily supported industry.  Limao and Panagariya (L&amp;P, 2007) modify Grossman and Helpman’s (G&amp;H, 1994) lobbying model in an attempt to understand why anti-trade bias (as opposed to pro-trade bias, which is predicted by the G&amp;H (1994) model) is the predominant pattern in observed trade policy.  L&amp;P (2007) propose that governments seek to reduce inequality between sectors by modifying trade policies in a way that reallocates income from the larger to the smaller sector.  We use measures...
Tipo: Presentation
Palavras-chave: Agricultural Policy; Trade Policy; Political Economy; Agricultural and Food Policy; International Development; International Relations/Trade; Political Economy; Q17 Q18.
Ano: 2012
URL: http://purl.umn.edu/123837

Measuring Market Integration in the Presence of Threshold Effect: The Case of Bangladesh Rice Markets
Provedor de dados: 31
Autores: Alam,   Mohammad Jahangir; McKenzie,   Andrew M.; Buysse,   Jeroen; Begum,   Ismat Ara; Wailes,   Eric J.; Van Huylenbroeck,   Guido.
Spatial price integration among five major Bangladesh rice markets is examined in the presence of threshold effects to account for the impact of transaction costs in the price adjustment process. Hansen and Seo (2002) threshold cointegration tests and threshold vector error correction models confirm the presence of threshold effects. Results highlight the importance of directing policy goals towards reducing transaction cost to engender greater pricing efficiency in Bangladesh rice markets.
Tipo: Presentation
Palavras-chave: Market integration; Rice markets; Transaction cost; Bangladesh; Agribusiness; Agricultural and Food Policy; Demand and Price Analysis; International Development.
Ano: 2012
URL: http://purl.umn.edu/124435

Sustaining Small and Medium Enterprises through Financial Service Utilization: Does Financial Literacy Matter?
Provedor de dados: 31
Autores: Nunoo,   Jacob; Andoh,   Francis K.
Promoting a dynamic operating environment for Small Medium scale enterprises (SMEs) is seen as a priority amongst economic development goals, in both developed and emerging economies. SMEs are a primary driver for job creation and GDP growth. They greatly contribute to economic diversification and social stability and they play an important role for private sector development.  It must be emphasized, that the utilization of these financial products does not only promote the growth of the SMEs themselves but also their active participation in the financial services market leads to financial development which is widely recognized as an important determinant of economic growth and also recognized as important for enhancing the social and economic impact of...
Tipo: Presentation
Palavras-chave: Small and medium scale enterprises; Financial literacy; Utilization; Agricultural Finance; Financial Economics; Research Methods/ Statistical Methods; Q14; M20.
Ano: 2011
URL: http://purl.umn.edu/123418

Assessment of dietary outcomes in food environment research: A barrier to policy and programs to support healthy eating?
Provedor de dados: 31
Autores: Kirkpatrick,   Sharon I.; Butler,   Eboneé N.; Reedy,   Jill; McKinnon,   Robin A.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123988

Do Men and Women Perform Differently on Different Types of Test Questions?
Provedor de dados: 31
Autores: Thompson,   Alexi S.; Jager,   Abigail L.; Burton,   Robert O., Jr.
Tipo: Presentation
Palavras-chave: Men; Women; Tests; Questions; Gender; Teaching/Communication/Extension/Profession.
Ano: 2012
URL: http://purl.umn.edu/119771

Factors influencing nutritional status of rural low income elderly in Trinidad
Provedor de dados: 31
Autores: Francis-Granderson,   Isabella; Pemberton,   Carlisle A.
Bridgetown, Barbados 6th – 10th July, 2009
Tipo: Presentation
Palavras-chave: Isabella Francis-Granderson; Dr. Carlisle Pemberton; Nutritional Status; Nutritional Assessment; Healthy Eating Index.; Community/Rural/Urban Development; Health Economics and Policy; R20; I18.
Ano: 2010
URL: http://purl.umn.edu/122660

Election Outcomes and Food Security:  Evidence from Consumption of Scheduled Castes and Tribes in India
Provedor de dados: 31
Autores: Tandon,   Sharad.
Tipo: Presentation
Palavras-chave: International Development.
Ano: 2012
URL: http://purl.umn.edu/124414

Production Structure and Technical Change in Thai Agriculture, 1972-1994
Provedor de dados: 31
Autores: Krasachat,   W.
The main purposes of this study are to quantitatively investigate the production structure and the pattern of technical change in Thai agriculture for the period of 1972-94. A translog variable cost function framework is used to estimate a system of the cost function and the associated cost share equations for Thai agriculture. The system is estimated using the iterative seemingly unrelated regression method applied to a panel of 92 observations, comprising annual data from 1972 to 1994 for four regions in Thailand. The analytical results indicate that there were scale economies, low technical progress, and complementarities between capital and fertiliser, capital and hired labour, and capital and unpaid family labour. Technical change was biased toward...
Tipo: Presentation
Palavras-chave: Production structure; Technical change; Thai agriculture; Agricultural and Food Policy.
Ano: 2000
URL: http://purl.umn.edu/123688

“Mixed signals: Stated preferences for future states of three New Zealand rivers”
Provedor de dados: 31
Autores: Bell,   Brian A.; Sinner,   Jim; Phillips,   Yvonne; Yap,   Michael; Scarpa,   Riccardo; Batstone,   Chris; Marsh,   Dan.
We conducted an online choice survey to inform advice to the Tasman District Council on setting management objectives for multiple uses and values across several catchments. One sub-sample was recruited via a survey company and a second via a public call with prize draw. From a survey with unlabelled choice sets for three rivers, we estimated a separate model for each river. Coefficients for natural character, fish &amp; fishing, local jobs and cost were generally significant and had expected signs. Coefficients on swimming and boating attributes were weak even though 68% and 31%, respectively, of the panel sample reported engaging in these activities. Levels of attributes varied for the three rivers and, together with within-sample variation, made...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124234

Exchange Rate Volatility in BRICS Countries
Provedor de dados: 31
Autores: Maradiaga,   David Isaias; Zapata,   Hector O.; Pujula,   Aude Liliana.
This paper measures the impact of bilateral exchange rates, the world agricultural GDP and third-country exchange rate volatilities (Yen/USD and Euro/USD) on the BRICS agricultural exports using a vector autoregressive (VAR) model. Two measures of volatility are used: the standard deviation and the coefficient of variation of the rates of change of the real exchange rates. We found that most variables are integrated of order two except the third-country exchange rate volatilities which are stationary and thus considered as exogenous in the VAR models. The causality between I(2) variables was tested using the modified Wald test introduced by Toda and Yamamoto (1995). We found that both volatilities (Yen/USD and Euro/USD) Granger cause Brazilian agricultural...
Tipo: Presentation
Palavras-chave: BRICS; Currency Exchange Rate; Volatility; Trade; Agricultural Exports; U.S. Dollar; Risk; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/119726

Research and agricultural productivity in Indonesia
Provedor de dados: 31
Autores: Warr,   Peter G.
Growth of total factor productivity has contributed 41 per cent of output growth in Indonesian agriculture since 1975. This study examines the extent to which publicly funded agricultural research within Indonesia has contributed to this productivity growth, while allowing for other possible determinants, including spillovers from international agricultural research, extension, weather changes, and government trade and subsidy policy. The econometric results imply a real annual rate of return to a marginal increase in Indonesian agricultural research expenditure of 27 per cent. Government-financed agricultural research explains 56 per cent of the observed increase in total factor productivity since 1975.
Tipo: Presentation
Palavras-chave: Production Economics; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/124475

Producer preferences towards vertical coordination: The case of Canadian beef alliances
Provedor de dados: 31
Autores: Steiner,   Bodo E.; Lan,   Kevin; Unterschultz,   James R.; Boxall,   Peter C.; Laate,   Emmanuel; Yang,   Danyi.
A survey among cow-calf producers was conducted during 2006 in Western Canada, to assess producers’ preferences towards participation in beef alliances. Producers’ choices were analyzed by varying the degree of vertical coordination in hypothetical lliance participation, while controlling for producer and farm-specific characteristics to explore risk, transaction cost and incentive considerations in participation decisions. Estimates from the attribute-based choice experiments suggest that information sharing regarding animal performance, revenue-risk and residual claimancy are important factors for producers driving alliance choices. Overall, cowcalf producers are willing to move toward higher levels of vertical coordination based on individual animal...
Tipo: Presentation
Palavras-chave: Beef value chain; Vertical coordination; Canada; Risk and Uncertainty; Q12; Q13; C83; D22.
Ano: 2012
URL: http://purl.umn.edu/122441

AN EXPERIMENTAL EXAMINATION OF TARGET BASED CONSERVATION AUCTIONS
Provedor de dados: 31
Autores: Boxall,   Peter C.; Perger,   Orsolya; Packman,   Katherine.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124247

Multi-criteria analysis for the impact assessment of food safety policies: The case of EU regulation on dietary arsenic
Provedor de dados: 31
Autores: Ragona,   Maddalena; Mazzocchi,   Mario; Alldrick,   A.J.
Developments in knowledge concerning the toxicology and occurrence of dietary arsenic suggest that levels of exposure in some groups of the population within the EU are a cause for concern. This applies also in the case of individual Member States where local regulatory limits exist. The situation is such that some foods on the market are already the subject of consumer advice provided by government agencies. In the light of these considerations, some have suggested that Member States’ legislation concerning arsenic in foods should be modified and harmonised to reflect such developments. An evaluation of alternative policy initiatives is considered in this work. It employed a computer-based, fuzzy multi-criteria impact assessment tool for the...
Tipo: Presentation
Palavras-chave: Multi-criteria analysis; Fuzzy; Regulatory impact assessment; Food safety regulations; Arsenic; Food Consumption/Nutrition/Food Safety; C02; C65; D81; Q18.
Ano: 2012
URL: http://purl.umn.edu/124122

Antibacterial Efficacy of Eryngium foetidum (Culantro) against Select Food-borne Pathogens
Provedor de dados: 31
Autores: Homer,   Sharon; Baccus-Taylor,   Gail S.H.; Akingbala,   John A.
Belize City, Belize 23rd - 27th July, 2007
Tipo: Presentation
Palavras-chave: Natural food preservatives; Food-borne pathogens; Antibacterial efficacy; Culantro leaves; In-vitro screening; % kill.; Agribusiness; I18.
Ano: 2009
URL: http://purl.umn.edu/122908

Not by Bread Alone: The Next Food Revolution
Provedor de dados: 31
Autores: Sere,   Carlos.
Livestock contribute to the livelihoods of 70% of the world’s poor, including farmers, traders and labourers. The next food revolution will dramatically expand production and consumption of animal products in the developing world. This revolution, however, also threatens the livelihoods of these poor livestock keepers. Public international research can mitigate this threat and thus contribute to addressing broad developmental goals of sustainable poverty reduction, food security and enhanced livelihoods. The ‘livestock revolution’ can provide tremendous opportunities to relieve poverty and hunger worldwide, and could increase the ability of millions of poor people to move out of a subsistence existence and to join the market economy. But the competitive...
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Livestock Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2003
URL: http://purl.umn.edu/124006

IMPACT OF MICROFINANCE ON HOUSEHOLD WELFARE: ASSESSING THE CASE OF SAMURDHI PROGRAM IN SRI LANKA
Provedor de dados: 31
Autores: Thibbotuwawa,   R.M.M.I.; Printhika,   B.L.D.S.; Jayasinghe-Mudalige,   Udith K.; Udugama,   J.M.M.
Household Income &amp; Expenditure Survey (2006/07) data were used to estimate the impacts of ‘Samurdhi’ – the largest state-sponsored microfinance program in Sri Lanka – on the status of household income, health, education, and food and non-food consumption. Propensity Score Matching was used to minimize selection bias. Propensity scores were estimated using a Probit Model to match “treated” households with “control” group to identify the impacts. The results show that Samurdhi possesses a significant impact on household welfare on income, consumption and education, despite the inefficiencies and political interferences associated with distribution of intended services.
Tipo: Presentation
Palavras-chave: Household welfare; Propensity Score Matching; Samurdhi Poverty Alleviation Program.; Consumer/Household Economics; Food Security and Poverty.
Ano: 2012
URL: http://purl.umn.edu/124320

Impact of United States Corn-Based Ethanol Production on Land Use
Provedor de dados: 31
Autores: Sobowale,   Flakkeh; Dicks,   Michael R.; Adam,   Brian D.; Campiche,   Jody L.
This study measures the impact of corn-based ethanol production in the United States on land use in other countries, or indirect land use. Indirect land use is a change from non-cropland to cropland (e.g. deforestation) that may occur in response to increasing scarcity of cropland. As farmers worldwide respond to higher crop prices in order to maintain the global food supply and demand balance, pristine lands are cleared and converted to new cropland to replace the crops for feed and food that were diverted elsewhere to biofuel production.   The results show that increasing ethanol production in the US has a positive and significant relation to U.S corn price. However, U.S. corn price does not have a significant impact on changes in corn acreage in Brazil...
Tipo: Presentation
Palavras-chave: Ethanol; Indirect land use; Agricultural and Food Policy; Demand and Price Analysis; Land Economics/Use; Marketing.
Ano: 2012
URL: http://purl.umn.edu/119800

Factors Affecting Quality Grade Discounts for Fed Cattle
Provedor de dados: 31
Autores: Hogan,   Robert J., Jr.; Carlberg,   Jared G.; Ward,   Clement E.; Peel,   Derrell S.
Prices for Choice and Select grade fed cattle are derived from wholesale and retail beef markets. Choice-Select price discounts are a key component of fed cattle pricing, whether packers purchase fed cattle on a live weight, dressed weight, or grid. This study identifies supply, demand, and other factors affecting the Choice-Select discount series using an adaptive expectations model. It is found that the lagged value of the discount as well as the percentage grading Choice exert statistically significant influences on the discount, while neither the boxed beef price nor seasonality affect the discount.
Tipo: Presentation
Palavras-chave: Choice-Select discount; Marketing; Prices; Quality; Demand and Price Analysis; Marketing.
Ano: 2012
URL: http://purl.umn.edu/119814

Consumer valuation of health attributes in food
Provedor de dados: 31
Autores: Smed,   Sinne; Hansen,   Lars Garn.
In modern societies it seems that the pleasures of taste often encourage the consumption of fatty, salty and sweet foods, whereas growing health awareness discourages consumption of the same foods. Numerous studies find that education and diet healthiness are highly correlated and one possible explanation is that consumers with a longer education are better at understanding and appreciating the health implication of their diet than are consumers with a short education. In this study we estimate a hedonic model of consumer’s valuation of food characteristics that allows nutrients to influence utility both through their perceived effects on health and their effects on the taste of food. The model is estimated using purchase data from a consumer panel with...
Tipo: Presentation
Palavras-chave: Hedonic model; Taste; Health; Food consumption; Food Consumption/Nutrition/Food Safety; D12; I12.
Ano: 2012
URL: http://purl.umn.edu/122730

Rates of Return on New Zealand R&amp;D
Provedor de dados: 31
Autores: Johnson,   Robin.
This paper reports on a survey of past trends in national and sectoral R&amp;D expenditure in New Zealand back to 1962 and models used to measure the rate of return to investment in R&amp;D. Cobb Douglas models are compared with productivity models and are used to explore the interaction between R&amp;D and labour and capital variables. Polynomial distributed lag models are investigated and the results compared with stock models. The average rates of return to R&amp;D investment vary across sectors of the economy - some being surprisingly high - but some results remain ambiguous to interpret.
Tipo: Presentation
Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 2000
URL: http://purl.umn.edu/123686

Ex-Ante Adoption of New Cooking Banana (Matooke) Hybrids in Uganda Based on Farmers' Perceptions
Provedor de dados: 31
Autores: Kenneth,   Akankwasa; Gerald,   Ortmann; Edilegnaw,   Wale; Wilberforce,   Tushemereirwe.
ABSTRACT  Despite the research efforts to introduce the newly developed, improved banana ’Matooke’ hybrids to the farming communities in Uganda, to date no attempt has been made to document the likelihood of farmer adoption of these hybrid bananas in Uganda. The paper has analyzed farmers’ perceptions regarding the newly developed improved Matooke hybrid banana attributes in Uganda to ex ante understand farmers’  likelihood of adoption of these varieties. Descriptive statistics and data reduction techniques (like factor analysis) were used to define the potential explanatory variables affecting adoption. Following this, a Zero Inflated Poisson (ZIP) regression model was applied to estimate the effect of farmers’ perceptions about the hybrid banana...
Tipo: Presentation
Palavras-chave: Keywords: Banana (Matooke) hybrids; Ex-ante; Farmers’ Perceptions; ZIP Models; Uganda; Agricultural and Food Policy; Food Security and Poverty.
Ano: 2012
URL: http://purl.umn.edu/123302

Does the price talk match the price walk? - a re-view of evidence
Provedor de dados: 31
Autores: Haniotis,   Tassos.
Plenary presentation from 123rd EAAE Seminar, 23-24 February, Dublin, Ireland
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122773

Rider Preferences and Economic Values for Equestrian Trails
Provedor de dados: 31
Autores: Hu,   Wuyang; Pelton,   Marie E.; Pagoulatos,   Angelos.
Recreational horseback riding is an important but less studied component of the equine industry. Using choice experiment data collected from a survey conducted in Kentucky, this study assesses rider preferences and economic values associated with various equestrian trail characteristics. Results indicate that although individuals have different opinions, trail characteristics such as length of trail, scenic views, and distance from home all have significant economic implications. In addition, riders prefer trails that are restricted for horse-riding only. Policy implications on maintaining current and creating new trails are given based on these results.
Tipo: Presentation
Palavras-chave: Choice experiment; Economic valuation; Equestrian trail; Land Economics/Use; Resource /Energy Economics and Policy; Q26.
Ano: 2012
URL: http://purl.umn.edu/123212

Harnessing People Power for Technology Uptake
Provedor de dados: 31
Autores: Nesbitt,   Harry.
Effective agricultural technology uptake depends on a continuum of knowledge within the rural community. Involving government officials, research and extension personnel, producers and consumers in the process of technology development, adaptation and evaluation is often a frustrating and slow process but it pays long-term dividends, particularly in developing countries. This paper discusses the process through which the Cambodia-IRRI-Australia Project involved its major donor, government officials, international and local institutions, non-government organizations, traders and farmers in developing technologies for rice-based farming systems in Cambodia. This successful approach re-established Cambodia as a rice-exporting nation after suffering 25 years...
Tipo: Presentation
Palavras-chave: Industrial Organization; Research and Development/Tech Change/Emerging Technologies.
Ano: 2002
URL: http://purl.umn.edu/123934

Determinants of off-farm employment in eastern rural Nepal
Provedor de dados: 31
Autores: Kayastha,   P.; Rauniyar,   Ganesh P.; Parker,   W.J.
Stagnant agricultural productivity and low returns in farming have led rural residents in Nepal to look elsewhere for alternative or supplemental income opportunities, primarily though off-farm employment. Off-farm employment provides supplemental income to support household expenditure. This study examined the contribution of off-farm employment to total household income for two ecologically distinct districts of Eastern Nepal and identified factors differentiating households with on-farm, off-farm and, both on-and off-farm labour. Variables that differentiated wage labour, skilled labour and trade employment were determined. Participatory rural appraisal workshops (n=6), key informant interviews (n=9) and household socio-economic surveys (n=150) were...
Tipo: Presentation
Palavras-chave: Asia; Nepal; Off-farm employment; PRA; Household sustainability; Labour market.; Consumer/Household Economics.
Ano: 1999
URL: http://purl.umn.edu/123825

Distinguished Fellows Address: Climate change policy and the science of design
Provedor de dados: 31
Autores: King,   Robert P.
Climate change has the potential to drive transformations in natural resource access, availability, and use that will have significant, far‐reaching impacts worldwide, not only for those of us living today but also for future generations. As economists we are being called upon to assess the economic impacts of alternative climate change scenarios and the costs of efforts to mitigate and adapt to the adverse consequences of climate change. I classify these professional activities as “economic analysis,” and I cite John Quiggin’s 2011 AAEA Fellows Address (Quiggin 2012) as one of many noteworthy contributions we have made. Equally important, we are being asked to design economic artifacts – institutions, markets, contractual relationships, measuring and...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/121412

Socially Overlaid Networks as Key Actors in Green Energy Businesses in Rural Areas
Provedor de dados: 31
Autores: Mikkola,   Minna; Kahiluoto,   Helena.
For about two decades, sustainability discourse has been operating as a public discourse, stressing reformist and imaginary features of sustainable development (Dryzek, 1997; WCED, 1987). This discourse has its political ‘wing’, emphasising societal orientations for renewal of production and consumption towards sustainability at large (CEC, 1997, 1999; COM, 2001; European Parliament, 2002). Indeed, European food system seems to call for developmental measures, as one fifth to circa half of all categories of environmental impacts are caused by the food system (Tukker et al., 2006) and within this system, meat and dairy sector seem to be responsible to large extent for eutrophication and climate change (Weidema et al., 2008). To effect changes towards...
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy; Farm Management; Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/122017

The Contribution of Australian and International Forestry Research
Provedor de dados: 31
Autores: Haines,   Russell.
Forests are making major contributions to rural livelihoods in Australia and in many other countries of the Asia-Pacific region. These include direct economic returns from the harvest of both timber and non-timber forest products, and indirect contributions to other economic activity through effects on soil and water quality. Research and development has provided the foundation upon which the forestry successes of Australia and its neighbours have been based, and international collaboration has been a major plank. ACIAR’s collaborative research program has made a significant contribution. A suite of plantation eucalypt projects has contributed to the development of a major industry in southern China, and the skills and experience so acquired have...
Tipo: Presentation
Palavras-chave: Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124417

Impact of Environmental Policies on the Adoption of Animal Waste Management Practices in the Chesapeake Bay Watershed
Provedor de dados: 31
Autores: Savage,   Jeff; Ribaudo,   Marc.
We use data from the ERS-NASS ARMS surveys to compare the use of best management practices on poultry and livestock farms inside the watershed and outside the watershed. Animal operations within the Chesapeake Bay States were found to be adopting some important manure management practices at a greater rate than operations outside the watershed. Adoption was taking place before the implementation of the TMDL, indicating that farmers may have been acting in response to building public pressure to reduce pollution.
Tipo: Presentation
Palavras-chave: Chesapeake Bay; Confined animal operation; Water quality; Environmental Economics and Policy; Livestock Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/123246

Testing for Speculative Bubbles in Agricultural Commodity Prices: A Regime Switching Approach
Provedor de dados: 31
Autores: Liu,   Xiaoliang; Filler,   Gunther; Odening,   Martin.
The sharp increase in agricultural commodity prices in 2008 and in 2011 has triggered an intensive debate on the causes for these price booms. Speculative bubbles have been quoted as one factor among others for the price peaks. Against this background, our paper contributes to this discussion by implementing a novel test procedure for speculative bubbles which has been suggested in the stock market literature. We use a regime switching regression model to test the hypothesis that agricultural prices are driven by periodically collapsing bubbles. The analysis is conducted for wheat, which is one of the most important crops worldwide. Our results show that the data do not support this particular bubbles hypothesis.
Tipo: Presentation
Palavras-chave: Agricultural commodity market; Net convenience yield; Speculative bubbles; Regime switching; Fundamental values.; Risk and Uncertainty; C12; Q13; Q14.
Ano: 2012
URL: http://purl.umn.edu/122554

Agricultural Trade and Freshwater Resources
Provedor de dados: 31
Autores: Reimer,   Jeffrey J.
Approximately 75% of all water used by humans goes towards food production, much of which is traded internationally.  This study formally models how this works in the case of crop agriculture, making use of recent advances in international trade theory and new data on the productivity by which countries use water for crop agriculture.  The strength of the model lies in its ability to predict, when there is a shock to the system, how trade between pairs of specific countries changes for products that use water intensively.  In one application of the model, international trade in final products is shown to be a means for countries to deal with short- and long-run shocks to water resources that are too big for one country to handle by itself in isolation.  In...
Tipo: Presentation
Palavras-chave: Climate change; Simulation; Trade liberalization; Water; Agricultural and Food Policy; Crop Production/Industries; International Development; International Relations/Trade; Resource /Energy Economics and Policy; F11; F18; Q25; Q54.
Ano: 2012
URL: http://purl.umn.edu/123944

Le performance ambientali dei processi di produzione agricola. Cosa la Carbon Footprint dei prodotti agroalimentari non è in grado di dire.
Provedor de dados: 31
Autores: Passeri,   N.; Blasi,   E.; Franco,   Silvio.
Molti studi analizzano il rapporto tra produzione agricola ed emissioni di gas serrra. Nella quantificazione dell’impatto ambientale del settore aagroalimentare, in termini di gas serra, si sta affermando la metodologia del Life Cycle Assesment (LCA) normata dalle ISO 14040 e 14044. Tra i diversi i risultati, l’analisi LCA determina l’Impronta Carbonica (C Carbon Footprint), derivante dagli utilizzi di materia ed energia nelle fasi di produzione, trasformazione, distribuzione, consumo e smaltimento di un prodootto agroalimentare. La metodologia LCA considera l’attività agricola come un processo industriale e, concentrandosi sulla determinazione delle emissioni per i singoli fattori immessi nei processi produtt tivi e non considerando l’intrinseca capacità...
Tipo: Presentation
Palavras-chave: Carbon footprint; Bilancio ecologico; Produzione agricola; Impronta ecologica; Impatto ambientale.; Environmental Economics and Policy; Q56; Q57; Q18.
Ano: 2012
URL: http://purl.umn.edu/124124

A farm level assessment of a novel drought tolerant forage:Tedera (Bituminaria bituminosa C.H.Stirt var. albomarginata).
Provedor de dados: 31
Autores: Finlayson,   John D.; Real,   Daniel; Nordblom,   Thomas L.; Revell,   Clinton; Ewing,   Michael A.; Kingwell,   Ross S.
Tedera (Bituminaria bituminosa C.H.Stirt var. albomarginata) is a drought tolerant perennial legume originating in the Canary Islands. This study evaluates the potential role and value of tedera in dryland mixed crop and sheep production systems in southern Australia. Regional variants of the bio-economic model MIDAS are used to assess tedera in farming systems at two locations. The analysis considers the quantity and quality of feed produced by tedera, the ability of other forages to complement or substitute for tedera and its impact on meat versus wool-producing sheep flocks. The results indicate that tedera offers the potential to increase farm profits by up to 26% and be grown on ~28% of a low rainfall mixed enterprise farm. On a high rainfall mixed...
Tipo: Presentation
Palavras-chave: Tedera; Drought tolerant; Forage; Legume; Mediterranean-type climate; Autumn feed gap; Bio-economic modelling; Whole farm modelling; Technology evaluation; MIDAS; Model of dryland agricultural system.; Crop Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124297

State Productivity Growth: Catching Up and the Business Cycle
Provedor de dados: 31
Autores: Ball,   V. Eldon; San Juan,   Carlos; Ulloa,   Camilo.
Selected paper AAEA 2012
Tipo: Presentation
Palavras-chave: Agriculture; Convergence; Total factor productivity; Production Economics; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/123334

Threats to Aquatic Environments: Is Aquaculture a Solution?
Provedor de dados: 31
Autores: Naylor,   Rosamond L.
Marine ecosystems and fisheries face serious threats from over-fishing, run-off of land-based pollutants, introductions and invasions of exotic species, coastal development and habitat alteration, unintended by-catch, and climate change. Annual global fish catches fluctuate between 80 and 90 million metric tonnes (MMT) and appear to be declining. As a result of limitations on wild capture, aquaculture has emerged as a major player in seafood production and marketing worldwide. During the past decade, global output of farmed finfish and shellfish almost tripled in weight and nearly doubled in value. This paper shows how aquaculture is both a contributing factor and a possible solution to the decline in world fisheries. The threats include overfishing of...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/124070

A Numerical Stochastic Control model of Range Management
Provedor de dados: 31
Autores: Beard,   Rodney.
An optimal stochastic control model of grazing that incorporates both pasture and livestock dynamics is presented. The model is solved numerically using Markov chain approximation methods. Markov chain approximation methods have a number of advantages as a means of solving stochastic optimal control methods compared with the usual alternatives. In particular, optimal control of the approximating Markov chain may be determined using Linear programming methods, thus making optimal stochastic control methods accessible to a wider audience.
Tipo: Presentation
Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2000
URL: http://purl.umn.edu/123643

Development of a Healthy Meal-Restaurant Index and a Healthy Retail Food Store Index: Obesogenic Environment Brazilian Study (ESAO)
Provedor de dados: 31
Autores: Duran,   Anna Clara.
Introduction: The food environment has been associated with food choices and obesity however tools to measure the food environment in middle-income countries are yet unavailable. Objectives: To propose two indexes to evaluate the food environment: Healthy Meal-Restaurant Index (HM-RI) and Healthy Retail Food Store Index (HRSI). Methods: All restaurants and retail food stores located in 52 census tracts across 13 districts of São Paulo city were audited. ANOVA analyses were performed according to SES and store types. Results: In total, 472 restaurants and 313 retail food stores were found. Mean HM-RI score was 2.66 (Standard deviation - SD=0.96), 50.2% of stores scored up to 2. Higher mean scores were found in high SES areas (p&lt;0.001) and among full...
Tipo: Presentation
Palavras-chave: Food environment; Index; Restaurants; Food stores; Retail; Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123389

Managing environmental flow objectives under uncertainty: The case of the lower Goulburn River floodplain, Victoria
Provedor de dados: 31
Autores: Heaney,   Anna; Beare,   Stephen; Brennan,   Donna C.
The regulation of river systems to meet water demands for irrigation in the southern Murray Darling Basin has changed the timing and the volume of the natural pattern of flows. Australian governments have committed to restoring, in part, winter and spring flow regimes to preserve and enhance the riverine environment. These changes will involve trade-offs against the foregone returns to agriculture and between different environmental objectives. To better understand these trade-offs, environmental flow objectives are specified as a change in the inter-arrival time distributions of winter and spring flow events, ranging from brief flooding events to the inundation of flood plains and wetlands over several weeks. Expected costs, and hence the trade-offs,...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/124315

Forestry and Livelihoods: Is there a Future? An FAO Perspective
Provedor de dados: 31
Autores: El-Lakany,   M. Hosny.
Given the large number of people in both developed and developing countries who rely on forest products and services for subsistence and income, forestry plays a big part in securing sustainable livelihoods. Thus FAO is placing greater emphasis on linking livelihoods, poverty alleviation and food security in its forestry program of work. Although not a panacea, the contributions of forests and trees outside forests to achieving the Millennium Development Goals could be significant, especially if the sector were more fully integrated into wider national development strategies.
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124420

Improved Legume Seed Demand Systems in Central Malawi: What Do Farmers' Seed Expenditures Say about Their Preferences?
Provedor de dados: 31
Autores: Kankwamba,   Henry; Mangisoni,   Julius H.; Simtowe,   Franklin; Mausch,   Kai; Siambi,   Moses.
The overall objective of this paper is to assess the demand for improved groundnut, bean, and soybean seed in central Malawi. Specifically, it examines how smallholder farmers respond to changes in market prices of improved legume seed. It also assesses factors that affect the decision to participate in improved seed technology transfer. Considering four commodities namely groundnuts, beans, soybeans and maize,  a staple food,  the paper estimates a multivariate probit and a linear approximate of the Almost Ideal Demand System (LA/AIDS) using cross section data collected by ICRISAT in 2010. Uncompensated price and expenditure elasticities are reported for the LA/AIDS model. The paper finds high own price elasticities in all four commodities considered. It...
Tipo: Presentation
Palavras-chave: Legumes; Multivariate Probit; LA/AIDS; Malawi; Demand and Price Analysis.
Ano: 2012
URL: http://purl.umn.edu/123945

Econometric analysis on economies of scale: An application to rice and shrimp production in Thailand
Provedor de dados: 31
Autores: Mekhora,   Thamrong.
Shrimp production in Thailand has historically been undertaken in the saline and brackish waters of coastal mangroves. In recent years rising demand and prices for shrimp and falling productivity of mangrove areas have motivated an expansion of shrimp production into the fresh-water margins of river estuaries that were previously used for rice cultivation. Generalised additive models, which offer a comprehensive approach to regression analysis, are mainly used for empirical analysis, and model development and specification for rice and shrimp production in this study. This paper presents a brief introduction to generalised additive models, discusses how they are applied to develop cost functions to satisfy the restriction of production theory, and...
Tipo: Presentation
Palavras-chave: Rice; Shrimp; Returns to scale.; Agribusiness; Environmental Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/124086

Trade costs and the pattern of Foreign Direct Investment: evidence from five EU countries
Provedor de dados: 31
Autores: Cardamone,   Paola; Scoppola,   Margherita.
According to the theoretical models of the multinational enterprise, trade costs play a fundamental role in determining the pattern of foreign direct investment (FDI). The aim of this paper is to assess the impact of trade policies on the outward stocks of FDI of the EU. We estimate a model based on the knowledge-capital theory of the multinational enterprise over the period 1995-2008 by using a sample of five EU countries and 26 partner countries. We consider, first, manufacturing sector as a whole and, then, six manufacturing industries defined at the two-digit level of the NACE classification. Explanatory variables include an index of applied bilateral tariffs and a dummy to capture the presence of Bilateral Investment Treaties (BITs). From an...
Tipo: Presentation
Palavras-chave: FDI; Trade protection; Knowledge-capital model; Dynamic panel data; International Relations/Trade; F15; F21; F23; C33.
Ano: 2012
URL: http://purl.umn.edu/123993

Promoting sustainable food consumption: the case of nutrition education programs in public schools
Provedor de dados: 31
Autores: Gorgitano,   Maria Teresa; Sodano,   Valeria.
Within the realm of public policies for a sustainable food system, the focus has gradually shifted from production oriented towards consumption oriented interventions. Whilst changing consumer behavior can have a long-lasting positive environmental impact, choosing effective sustainable consumption policy instruments may be a challenging task. In the case of food consumption, the choice of interventions is particularly difficult because of the multiple aspects- psychological, cultural, economic, religious- associated with eating habits. The paper deals with one of the most commonly used forms of intervention, nutrition education programs in public schools. The main conclusion of the paper is that a major effort should be made by the Ministry of Education,...
Tipo: Presentation
Palavras-chave: Sustainable consumption; Nutrition education; Welfare economics; Food governance; Food Consumption/Nutrition/Food Safety; I0; Q01; D10.
Ano: 2012
URL: http://purl.umn.edu/124379

Market Competitiveness and Demographic Profiles of Dairy Alternative Beverages in the United States: The Case of Soymilk
Provedor de dados: 31
Autores: Dharmasena,   Senarath; Capps,   Oral, Jr.
Data from U.S. households for year 2008 were used in examining market competitiveness of soymilk using tobit procedure. Unconditional own- and cross-price elasticities are larger than their conditional counterparts. Income, age, employment status, education level, race, ethnicity, region and presence of children are significant drivers affecting the demand for soymilk.
Tipo: Presentation
Palavras-chave: Soymilk; White milk; Flavored milk; Nielsen HomeScan data; Tobit procedure; Agribusiness; Consumer/Household Economics; Demand and Price Analysis; Marketing; D11; D12.
Ano: 2012
URL: http://purl.umn.edu/119680

Economic and Social Impacts of a Large Agricultural Processing Plant in a Rural County
Provedor de dados: 31
Autores: Doeksen,   Gerald A.
In 1994, a large pork processing plant located in Texas County, Oklahoma. In addition, many ranchers built large pork confinement facilities. The county was sparsely populated with 16,320 residents. The largest community, Guymon, had a population of 8,350 residents. These activities have changed the community and the objective of this paper will be to (1) review the social and economic changes that have occurred since 1994, and (2) to project social and economic changes from 1998 to 2003.  Many growth pains have occurred since 1994 and a discussion of social and economic data will clearly exemplify positive and negative changes. Economic data, which includes employment and income data and demographic data, will demonstrate the growth in the economy. Social...
Tipo: Presentation
Palavras-chave: Agribusiness.
Ano: 1999
URL: http://purl.umn.edu/123802

MARKETING MARGINS AND MARKET POWER IN THE AUSTRALIAN DAIRY PROCESSING AND RETAILING SECTORS
Provedor de dados: 31
Autores: O'Donnell,   Christopher J.
We use a New Empirical Industrial Organisation (NEIO) approach to estimate industry marketing margins for several Australian dairy products. Our model allows for differences in input- and outputmarket conjectural elasticities under the assumption of a fixed proportions production technology. Other assumptions on the production technology include the use of a single agricultural input to produce multiple outputs, and substitutability between agricultural and non-agricultural inputs. Two alternative methods are used to decompose the price of manufacturing milk into the prices of components used to produce different manufacturing milk products. We estimate margins equations for carton milk, wholemilk powder (WMP), butter, cheese and skim-milk powder (SMP)...
Tipo: Presentation
Palavras-chave: Agribusiness; Marketing.
Ano: 1999
URL: http://purl.umn.edu/124502

Modelling Fresh Strawberry Supply “From-Farm-to-Fork” as a Complex Adaptive Network
Provedor de dados: 31
Autores: Engelseth,   Per; Karlsen,   Anniken; Verwaart,   Tim.
The purpose of this study is to model and thereby enable simulation of the complete business entity of fresh food supply. A case narrative of fresh strawberry supply provides basis for this modelling. Lamming et al. (2000) point to the importance of discerning industry-specific product features (or particularities) regarding managing supply networks when discussing elements in “an initial classification of a supply network” while Fisher (1997) and Christopher et al. (2006, 2009) point to the lack of adopting SCM models to variations in products and market types as an important source of SCM failure. In this study we have chosen to move along a research path towards developing an adapted approach to model end-to-end fresh food supply influenced by a...
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy; Farm Management; Production Economics; Research Methods/ Statistical Methods.
Ano: 2011
URL: http://purl.umn.edu/122012

The Effect of Entrepreneurship on Economic Growth in Alabama
Provedor de dados: 31
Autores: Starks,   Danyelle N.
Tipo: Presentation
Palavras-chave: Agribusiness.
Ano: 2012
URL: http://purl.umn.edu/119810

The Value of Green Manuring in the Integrated Management of Herbicide-Resistant Annual Ryegrass (Lolium rigidum)
Provedor de dados: 31
Autores: Monjardino,   Marta; Pannell,   David J.; Powles,   Stephen B.
Herbicide resistance has become a major problem in Australian dryland agriculture. This situation has resulted from the repeated use of herbicides in place of the traditional weed control provided by cultivation and grazing. Farmers have addressed the problem of herbicide resistance by adopting a system of integrated weed management that allows weed control with a range of different techniques and herbicides. One of the non-chemical methods being considered by farmers is “green manuring”, which involves ploughing a healthy growing crop or pasture into the soil in order to prevent weed seed production and provide other benefits. In this study, the trade-offs between the effective weed control and biological benefits provided by green manuring and the large...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123707

A Comparison of Consumer Willingness to Pay for Four Types of Sweeteners
Provedor de dados: 31
Autores: Deng,   Xueting; Saghaian,   Sayed H.; Woods,   Timothy A.
As the U.S. consumption of sweeteners has increased, analysis of the demand for sweeteners has become more important. In this paper, consumer willingness-to-pay (WTP) for selected four types of sweeteners is evaluated. The four types of sweeteners are Kentucky grown pure maple syrup, artificially maple flavored syrup, sorghum syrup and molasses. Results suggest that consumers who are at high household income level (above $80,000) and with a smaller household size are likely to pay more for Kentucky grown maple syrup. Results show that there is no statistic difference for the annual household consumption among the four types of sweeteners.
Tipo: Presentation
Palavras-chave: Artificial sweeteners; Kentucky; Maple syrup; Molasses; Sorghum; Willingness to pay; Agribusiness; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/119811

Competition Policy in Agriculture: A Review of Methods
Provedor de dados: 31
Autores: MacAulay,   T. Gordon.
The nature of the competition policy public benefit tests, applied to various agricultural industries, is reviewed. Then, various analytical techniques that have been applied to the assessment of the public benefit test are examined. These techniques include analysis of price premiums, consideration of pooling and averaging, pricing to market tests, what-if scenarios, market power analysis, and price discriminating monopolist models. Some of the advantages and disadvantages of these approaches are summarised. Generally, all of these approaches have various strengths and a number of weaknesses so that the case for the assessment of costs and benefits must substantially depend on the logic of the effects of the regulation rather than the results of any...
Tipo: Presentation
Palavras-chave: Competition policy; Price discrimination; Pricing to market; Price premiums; Agricultural and Food Policy.
Ano: 2000
URL: http://purl.umn.edu/123697

Water for Irrigated Agriculture and the Environment: Finding a Flow for All
Provedor de dados: 31
Autores: Downer,   Alexander.
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/124457

The Financialization of Agricultural Futures Markets
Provedor de dados: 31
Autores: Gilbert,   Christopher L.
Plenary presentation from 123rd EAAE Seminar, 23-24 February, Dublin, Ireland
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122775

ESTIMATING THE CHARACTERISTICS OF HOMOGENEOUS FUNCTIONSUSING FLEXIBLE FUNCTIONAL FORMS
Provedor de dados: 31
Autores: O'Donnell,   Christopher J.
A flexible functional form can provide a second-order approximation to an arbitrary unknown function at a single point. Except in special cases, the parameters of flexible forms will vary from one point of approximation to another. I use this property to show that, in general, if an unknown function is homogeneous then i) Euler's Theorem gives rise to linear equality constraints involving both the data and a set of observation-varying flexible form parameters, ii) the common practice of imposing homogeneity on flexible functional forms is unnecessarily restrictive, and iii) it is possible to obtain estimates of the observation-varying parameters of approximating flexible forms using a Singular Value Decomposition (SVD) estimator. Two illustrations are...
Tipo: Presentation
Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2000
URL: http://purl.umn.edu/123713

Animal Disease Economics: The Case of Ovine Johne’s Disease in New South Wales
Provedor de dados: 31
Autores: Webster,   Stewart; Mullen,   John D.
Increased surveillance over the last three years has found that the prevalence of ovine Johne’s disease (OJD) in Australia is greater than previously believed. Trading restrictions and recent stock movement controls have added to the productivity losses of OJD affected producers in an attempt to minimise further spread of the disease while scientific data to support long term policy decisions is obtained through the National OJD Control and Evaluation Program. The literature on the economics of OJD in Australia is reviewed and a framework for further work in this area developed. Directions for economic research within the National Program are then presented.
Tipo: Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123737

COST OF IGNORANCE- EVALUATING A LAND AND WATER MANAGEMENT PLAN
Provedor de dados: 31
Autores: Hill,   Christine M.
This paper outlines the impacts of ignoring the costs to the community of increased rural waterlogging and salinity. It identifies the cost of no further action, and the costs and benefits of undertaking a land and water management plan. The processes of developing and evaluating the plan are explained. Difficulties in obtaining data, both for the community and the economist, are discussed. Data availability then shapes the range of costs and benefits that can be evaluated. The paper looks at the process and results of a case study of a Land and Water Management Plan for an irrigation district in central New South Wales. The case study demonstrated all the complexities of community and professional conflict, difficulties in data availability, budget and...
Tipo: Presentation
Palavras-chave: Land and water management plan; Economic evaluation; Salinity; Waterlogging; Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123814

Geographical Diversification: An Application of Copula Based CVaR
Provedor de dados: 31
Autores: Larsen,   Ryan A.; Leatham,   David J.; Mjelde,   James W.; Wolfley,   Jared L.
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2008
URL: http://purl.umn.edu/119533

Who is Vouching for the Input Voucher?  Decentralized Targeting and Elite Capture in Tanzania
Provedor de dados: 31
Autores: Pan,   Lei; Christiaensen,   Luc J.M.
Through decentralized targeting of input vouchers new agricultural input subsidy programs aim to more effectively reach their objectives and target population. But, lingering fears of elite capture remain. These are borne out in the 2009 input voucher program in Kilimanjaro, Tanzania. Sixty percent of the voucher beneficiaries were households with village officials. This significantly reduced the targeting performance of the program, especially in unequal and remote communities. When targeting the poor, greater coverage and concentration in higher trust settings mitigated these concerns. Scrutiny remains important when relying on decentralized targeting, as is a clearer sense of purpose of input vouchers.
Tipo: Presentation
Palavras-chave: Local elite; Decentralization; Targeting; Fertilizer; Voucher program; Tanzania; International Development; Public Economics; H11; H42; O22.
Ano: 2012
URL: http://purl.umn.edu/122905

The (Normative) Efficiency Ranking of Output and Export Subsidies under Costly and Imperfect Enforcement
Provedor de dados: 31
This paper relaxes the assumption of perfect and costless policy enforcement implicit in traditional analysis of output and export subsidies and introduces enforcement costs and cheating into the economic analysis of these policy instruments. Analytical results show that compliance with policy rules is not the natural outcome of self-interest and complete deterrence of cheating is not economically efficient. The introduction of enforcement costs and cheating changes the welfare effects of the policy mechanisms, their efficiency in redistributing income to producers, and their normative ranking in terms of transfer efficiency.
Tipo: Presentation
Palavras-chave: International Relations/Trade.
Ano: 2000
URL: http://purl.umn.edu/123651

Tobit regression to estimate impact of EU market intervention in dairy sector
Provedor de dados: 31
Autores: Wocken,   Meike; Kneib,   Thomas.
This study examines the effect of European intervention politics in the European butter market in the context of market liberalization using the example of Germany. A heteroscedastic Tobit model is estimated using German butter market data from 1973-2010. There is evidence that price support has reduced price instability in the butter market. Simulation indicates that enhancing intervention price causes an increase in the expected butter price in the long-run, even though if market price is higher than intervention level. We find changing effects of stockpiling. If difference between market and intervention price is small and stock quantity is high, it significantly contributes to reducing price volatility. On the contrary if price difference is large and...
Tipo: Presentation
Palavras-chave: Censored regression; Market liberalization; Butter market; Agricultural and Food Policy; Risk and Uncertainty; C5; D4; Q11.
Ano: 2012
URL: http://purl.umn.edu/122528

Perspectives for Decision Support Systems: Irrigated Dairy Production in the Murray region.
Provedor de dados: 31
Autores: Gyles,   Oliver; Mahoney,   Cynthia C.; Brown,   Stuart; Gibb,   Ian.
Consultation with industry identified a range of knowledge and information management tools required for building decision support systems (DSSs) that can help guide sustainable development of irrigated dairy production in the Murray Region. Individual production systems vary in complexity and input intensity and are coupled with the unique business and lifestyle goals of farm families. While single issue focussed decision support tools are limited to promoting understanding of single factor responses, the relevant opportunity costs for resources must be considered. Thus a whole farm perspective for DSSs is required to assist farm business managers optimise the profitability of production and development given the range of technical options, market...
Tipo: Presentation
Palavras-chave: Agribusiness; Livestock Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123656

The Paradox of Choice:    Why More is Good &amp; Too Much is Terrible
Provedor de dados: 31
Autores: Lewis,   Daniel; Allender,   William J.; Richards,   Timothy J.; Hamilton,   Stephen F.; Park,   Sungho.
Please contact William Allender (William.Allender@asu.edu) for a copy of the manuscript that goes with this poster.
Tipo: Presentation
Palavras-chave: Consumer Search; Product Variety; Discrete Choice Models; Preference for Variety.; Consumer/Household Economics; Demand and Price Analysis; Marketing.
Ano: 2012
URL: http://purl.umn.edu/124485

Genetically modified animals in the food and pharmaceutical chains: economics, public perception and policy implications
Provedor de dados: 31
Autores: Mora,   Cristina; Menozzi,   Davide; Aramyan,   Lusine H.; Valeeva,   Natasha I.; Pakky,   R.; Zimmermann,   Karin L.
This paper presents ongoing results of the EU project PEGASUS (Public Perception of Genetically modified Animals – Science, Utility and Society, 7th FP).The overall objective is to provide support for future policy regarding the development, implementation and commercialisation of genetically modified (GM) animals, both terrestrial and aquatic, together with the foods and pharmaceutical products derived from them. Food products derived from GM animals have not yet entered the market. Nonetheless, the ongoing discussion about GM crops and the recently initiated discussions about the safety and ethics of foods and pharmaceutical products derived from cloned animals have set the stage for the socio-economical issues that will surround the introduction of GM...
Tipo: Presentation
Palavras-chave: Genetically modified animals; Public perception; Economic impact; Policy implications; Food Consumption/Nutrition/Food Safety; Q16; D18; I12.
Ano: 2012
URL: http://purl.umn.edu/124121

What do we know of consumers’ preferences and food choices in the islands of the South Pacific
Provedor de dados: 31
Autores: Owen,   Kate M.
Governments in developing countries have tended to focus on the production end of their food systems. However, there is increasing recognition of the need to understand the nature of post-harvest marketing and consumers' behaviour in order to develop effective policies for food marketing initiatives and nutrition security.   This paper presents an examination of the available research into consumer preferences in the South Pacific region and the contexts in which the research was conducted. Of particular interest is the methods employed to obtain consumer preferences . Consideration is given to the benefits of this type of research in the Pacific and to the issues which might arise in identifying a conceptual framework and methodology.
Tipo: Presentation
Palavras-chave: Consumer/Household Economics.
Ano: 1999
URL: http://purl.umn.edu/124507

Dollar Enterprise – Integrating Experiential Leaning in Teaching Community Entrepreneurship
Provedor de dados: 31
Autores: Liang,   Chyi-Lyi (Kathleen).
Everybody has had dreams. Some of the dream ideas have the potential to be developed into successful enterprise concepts (for commercial enterprises or non-profit organizations), if we know how to proceed to prepare for success and failure. Unfortunately sometimes a dream idea can also become a nightmare for people who do not have adequate skills and knowledge to capitalize on opportunities.   Being an entrepreneur does not imply one must own a business. Those who have dreamed about being their own boss one day, always wonder what it would be like to actually start and run their own business. Dollar Enterprise, an integrated and unique activity offered by the Department of Community Development and Applied Economics through a course “Introduction to...
Tipo: Presentation
Palavras-chave: Entrepreneurship; Teaching; Education; Experiential learning; Teaching/Communication/Extension/Profession.
Ano: 2012
URL: http://purl.umn.edu/124361

Benefit-costs analysis of climate-related agricultural investments in Africa: a case study
Provedor de dados: 31
Autores: Branca,   Giacomo; Lipper,   Leslie; Sorrentino,   Alessandro.
Paper removed at the request of the first (corresponding) author.
Tipo: Presentation
Palavras-chave: Food security; Adaptation; Mitigation; Benefit-cost analysis; Externalities; Environmental Economics and Policy; D61; D62; H54; O13; Q55.
Ano: 2012
URL: http://purl.umn.edu/124109

The evolution of land values in Italy. Does the influence of agricultural prices really matter?
Provedor de dados: 31
Autores: Mela,   Giulio; Longhitano,   Davide; Povellato,   Andrea.
Interest towards farmland market has been increasing in recent years. In developing countries there is rising concern about land being purchased by foreign investors, while in the developed world the debate is centred on whether agricultural factors are still the main determinants of land values or not. This work assesses the determinants of land values in Italy using panel data techniques during the time span 1992-2010. In Italy farmland values have historically been influenced more by natural characteristics of the land than agricultural prices. However, lately non-agricultural factors have been increasing their importance. We find that agricultural prices only slightly affect average land values in Italy. Main determinants of land prices are the yield...
Tipo: Presentation
Palavras-chave: Farmland prices; Land market; Panel data models; Farmland values determinants; Risk and Uncertainty; C23; E32; Q24.
Ano: 2012
URL: http://purl.umn.edu/122479

Bio-economic modelling of decisions under yield and price risk for suckler cow farms
Provedor de dados: 31
Autores: Briner,   Simon; Finger,   Robert.
Applying a bio-economic whole farm model we assess the impact of price and weather risk as well as different risk management strategies on the variability of the income in Swiss suckler cow production. We consider different on-farm risk management strategies such as the flexible adjustment of herd size, fodder composition and feed stocks, as well as an income insurance. Our results show that without any risk-management income variability is rather high, with coefficient of variation (CV) of income ranging from 26% to 31%. Taking on-farm risk management strategies into account it is possible to reduce income variability significantly (CV 12-15%), but causes only low reductions of mean income levels. Our results also indicate that income insurance is not...
Tipo: Presentation
Palavras-chave: Weather risk; Bio-economic whole farm model; Suckler cow; Income insurance; Farm Management; Risk and Uncertainty; Q12; Q18.
Ano: 2012
URL: http://purl.umn.edu/122547

Price Asymmetric Relationships in Commodity and Energy Markets
Provedor de dados: 31
Autores: Wixson,   Sarah E.; Katchova,   Ani L.
Recent increases in the price of crude oil have led to a rise in the prominence of corn-based ethanol as an alternative source of energy. As a result linkages have been established between commodity and energy prices. The aim of this study is to determine if soybeans, corn, wheat, oil, and ethanol adjust their prices  asymmetrically depending on whether their actual price is over or under-predicted with respect to one another. This study’s goal of determining if asymmetric price relationships exist is accomplished by using monthly time series price data incorporated into a distributed lag error correction model distinguishing between positive and negative price difference and positive and negative values of the error correction terms. The primary results...
Tipo: Presentation
Palavras-chave: Commodity prices; Energy prices; Price asymmetry; Risk and Uncertainty; Q13.
Ano: 2012
URL: http://purl.umn.edu/122553

Climate Change and Agriculture – A Review of Some Global and Caribbean Concerns
Provedor de dados: 31
Autores: Pemberton,   Carlisle A.
Belize City, Belize 23rd - 27th July, 2007
Tipo: Presentation
Palavras-chave: Climate change; Caribbean; Agriculture; Mitigation strategies; Agribusiness; Q54; Q15.
Ano: 2009
URL: http://purl.umn.edu/122906

Best Practice Benchmarking in Australian Agriculture: Issues and Challenges
Provedor de dados: 31
Autores: Ronan,   Glenn; Cleary,   Gordon.
The quest to shape Australian agriculture for improved and sustainable profitability is leading Research and Development Corporations, agri-service consultants and government to devote substantial effort into development of new farm business analysis and benchmarking programs. ‘Biz Check’, ‘Pork Biz’, ‘Wool Enterprise Benchmarking’, ‘Dairy Business Focus’ and ‘Business Skills and Best Practice’ for beef and sheep meat producers are examples of current farm management and training programs where business analysis and benchmarking are integral components.   Benchmarking is currently very popular with farmers, service providers and funding agencies. However, benchmarking has been likened to comparative analysis with both criticised by past and present...
Tipo: Presentation
Palavras-chave: Agribusiness.
Ano: 2000
URL: http://purl.umn.edu/123728

The Privatization of Poverty Alleviation
Provedor de dados: 31
Autores: Viravaidya,   Mechai.
Tipo: Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2001
URL: http://purl.umn.edu/124434

Finding True Consumer Attitudes: Do Validation Questions Help?
Provedor de dados: 31
Autores: Gao,   Zhifeng; House,   Lisa; Bi,   Xiang.
A survey with validation question was delivered to 3475 respondents to study the impact of using validation question to improve data quality. Results show that The respondents who passed the validation question had significantly older ages, higher median incomes and higher education levels. The WTP estimates with and without the respondents who fails the validation question differ significantly.
Tipo: Presentation
Palavras-chave: Survey data quality; Validation question; Willingness to pay; Seafood; Choice experiment; Agribusiness; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Institutional and Behavioral Economics; Marketing.
Ano: 2012
URL: http://purl.umn.edu/123922

Biotechnology and the Quest for Food Security: Panacea, Panoply or Palliative?
Provedor de dados: 31
Autores: Ryan,   James G.
Biotechnology can help confer traits in crops and livestock that enhance yields and quality and reduce costs, often with attendant benefits to the environment. In economic terms biotechnology offers the potential of substantially reducing the research time and costs of genetically enhancing crops and livestock. Biotechnology is viewed as a way of substantially lifting yield potentials in much the same way as conventional breeding did with the dwarfing genes leading to the Green Revolution in rice and wheat in the 1960s. To realise this potential for developing countries will require more explicit attention to their priorities and an array of complementary investments and policies. These include an increased focus on ‘orphan crops’ and traits of particular...
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Research and Development/Tech Change/Emerging Technologies.
Ano: 2002
URL: http://purl.umn.edu/123929

Evaluation of an index-based risk management contract for agricultural activities
Provedor de dados: 31
Autores: Weynants,   Stephanie; Gaspart,   Frederic; Frahan,   Bruno Henry de.
This paper proposes and evaluates area index-based financial contracts for specific farm activities. These financial contracts allow not only for removing moral hazard and adverse selection as index insurances do, but also for adding more flexibility and, hence, better risk protection. The evaluation of these financial contracts uses FADN farm data of Belgium from 1990 to 2007. Area indexes based on yield and yield-in-value perform well in stabilising revenues from some farm activities, but badly  from some others. The variation in the estimated actuarially fair premiums across agricultural area shows the importance of designing those financial contracts according to homogenous agricultural area.
Tipo: Presentation
Palavras-chave: Agricultural risk management; Index insurance; Financial contract; Belgium; Risk and Uncertainty; D81; Q12; Q18.
Ano: 2012
URL: http://purl.umn.edu/122483

Simulating the spillover benefits from R&amp;D by a small producer country embedded in a  co-authorship network: Aquaculture R&amp;D in Germany
Provedor de dados: 31
Autores: Guettler,   Stefan; Seidel-Lass,   Linda; Mueller,   Rolf A.E.
Aquaculture
Tipo: Presentation
Palavras-chave: Aquaculture R&amp;D; Bibliometric Network Analysis; DREAM simulation; Agricultural and Food Policy; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/122885

Conflict, Food Price Shocks, and Food Insecurity: The experience of Afghan households
Provedor de dados: 31
Autores: D'Souza,   Anna; Jolliffe,   Dean.
Revised version submitted December 2012.
Tipo: Presentation
Palavras-chave: Afghanistan; Food security; Conflict; Nutrition; Poverty; Spatial distribution; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; International Development; D12; I3.
Ano: 2012
URL: http://purl.umn.edu/123323

Assessing Korean Consumers’ Valuation for Domestic and Imported Rice: Importance of Country of Origin and Food Miles Information
Provedor de dados: 31
Autores: Han,   Doo Bong; Nayga,   Rodolfo M., Jr.; Lee,   Ji Yong; Yoon,   Jong Min.
The aim of this paper is to determine Korean consumers’ valuation for domestic rice and imported rice from China and the US. Using revealed preference data from random nth price auction mechanism, our results generally suggest that consumers’ willingness to pay (WTP) for domestic rice is higher than the WTP for imported rice. Results also suggest that while country of origin and food miles information positively influences consumers’ WTP for domestic rice, country of origin information provides higher valuation for domestic rice than food miles information. Country of origin and food miles information has no statistically significant effect on WTP for the imported Chinese rice product but food miles information has a negative effect on WTP for the imported...
Tipo: Presentation
Palavras-chave: Rice; Country of origin information; Food mile information; Experimental auction; Agricultural and Food Policy; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/119817

Public Food Distribution System and Food Security of the Poor: The Indian and Chinese Experience Compared
Provedor de dados: 31
Autores: Zhou,   Zhang-Yue; Gandhi,   Vasant P.
The idea of food security has been circulating for a long time and the right to adequate food and to be free from hunger has been repeatedly affirmed and reaffirmed in a number of documents adopted by the United Nations. Despite the enormous efforts in the past decades by various international organisations, government and non-government organisations, unfortunately, today there are still more than 800 million people throughout the world, most of them in developing countries, who do not have enough food to meet their basic nutritional needs. Among the 800 million, more than 30 percent are from India and China. It is these poor people who have great difficulty in obtaining an adequate food for basic human requirements and who need to be helped by the public...
Tipo: Presentation
Palavras-chave: Agribusiness; Food Security and Poverty.
Ano: 2000
URL: http://purl.umn.edu/123746

Is It More Than Coincidence of the Presence of Food Deserts, Pre-School Age Native American Indian Children, and Childhood Obesity?
Provedor de dados: 31
Autores: Stegelin,   Forrest E.
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 2012
URL: http://purl.umn.edu/124262

How Much Can We Learn About Producers' Utility Functions from Their Production Data?
Provedor de dados: 31
Autores: Lence,   Sergio H.
A thought experiment is designed to investigate whether the structure of risk aversion (i.e., the changes in absolute or relative risk aversion associated with changes in wealth) can be estimated with reasonable precision from agricultural production data.  Findings strongly suggest that typical production data are unlikely to allow identification of the structure of risk aversion.  A flexible utility parameterization is found to slightly worsen technology parameter estimates.  Results also indicate that even under a restricted utility specification, utility parameter estimates are biased.  Further, their quality is much worse when shocks are not large or samples are small.
Tipo: Presentation
Palavras-chave: Expected utility; Risk preferences; Production analysis; Risk attitudes; Production Economics; Risk and Uncertainty; C13; D24; D81; Q12.
Ano: 2008
URL: http://purl.umn.edu/119534

Policy Influences on Genetic Diversity and Yield Variability in Australian Wheat Production
Provedor de dados: 31
Autores: Godden,   David P.; Brennan,   John P.
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy; Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123653

Food Expenditures: The Effect of a Vegetarian Diet and Organic Foods
Provedor de dados: 31
Autores: Guillemette,   Ann-Renee; Cranfield,   John A.L.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123391

Estrutura, Evolucao e Dinamica dos Sistemas Agroalimentares e Cadeias Agroindustriais Analise das estrategias de posicionamento e diferenciacao dos produtos no mercado a partir do caso da empresa Bertin alimentos
Provedor de dados: 31
Autores: Silva,   Ronney Marcio Faial; da Silva,   Gisleide Lima; Pereira,   Maria Do Rosario Alves; de Oliveira,   Cyntia Meireles; Silva,   Daniel Ferreira Da.
Análise das estratégias de posicionamento e diferenciação dos produtos no mercado a partir do caso da empresa Bertin alimentos que é muito competitivo, tanto local, regional, quanto nacional. A proposta do artigo é mostrar como algumas estratégias adotadas pela empresa foram bem sucedidas e diferenciam seus produtos das ofertas concorrentes, adquirindo assim, características desejadas pela maioria dos consumidores. --------------------------------------------------------------- With the processes of globalization and economic dynamics, the competition increases, therefore, the companies starts to search each time more, the differentiation of its products in the market, of form to become the captive consumers and to reach new markets. Breaking of this...
Tipo: Presentation
Palavras-chave: Agroindustria; Marketing; Competitividade; Agroindustry; Marketing; Competitiveness; Agribusiness; International Relations/Trade.
Ano: 2008
URL: http://purl.umn.edu/119151

On the interaction between risk-taking and risk-sharing under farm household wealth heterogeneity
Provedor de dados: 31
Autores: Delpierre,   Matthieu; Verheyden,   Bertrand; Weynants,   Stephanie.
Empirical evidence on developing countries shows on the one hand that rich farm-households are more keen to adopt new technologies and are higher risk takers than poor households. On the other hand, however, they are shown to be less vulnerable to income shocks than poor farmers. This paper provides a rationale for these observations. Risk averse agents, heterogeneously endowed with wealth, non-cooperatively decide on their level of subscription to risk-sharing and on the degree of individual production risk they take. Rich households take more risks and subscribe more to risk-sharing. Although risk-sharing allows all households to cope with idiosyncratic shocks, the risk-taking behavior of rich households increases the covariate component of poor...
Tipo: Presentation
Palavras-chave: Risk-taking; Risk-sharing; Technology adoption; Farm household; International Development; Risk and Uncertainty; O12; O13; O17; O33.
Ano: 2012
URL: http://purl.umn.edu/122556

Conclusive Evidence on the Benefits of Temporal Disaggregation to Improve the Precision of Time Series Model Forecasts
Provedor de dados: 31
Autores: Ramirez,   Octavio A.
Simulation methods are used to measure the expected differentials between the Mean Square Errors of the forecasts from models based on temporally disaggregated versus aggregated data. This allows for novel comparisons including long-order ARMA models, such as those expected with weekly data, under realistic conditions where the parameter values have to be estimated. The ambivalence of past empirical evidence on the benefits of disaggregation is addressed by analyzing four different economic time series for which relatively large sample sizes are available. Because of this, a sufficient number of predictions can be considered to obtain conclusive results from out-of-sample forecasting contests. The validity of the conventional method for inferring the order...
Tipo: Presentation
Palavras-chave: Data Aggregation; Efficient Forecasting; Research Methods/ Statistical Methods.
Ano: 2012
URL: http://purl.umn.edu/123470

Supplying Forest Services and Products from Natural Forests and Plantations: Can We Meet the Challenge?
Provedor de dados: 31
Autores: Bevege,   Ian.
Sensible and equitable use of the world’s forests while ensuring sustainable delivery of forest-based goods and services devolves upon many interlinked social, economic, environmental and developmental issues. Increasing global population, rising standards of living with concomitant consumption of forest products, and widening expectations of the forests to provide environmental services and regulate water supplies, are placing huge demands on forest resources. While the yield from industrial and fuelwood plantations increasingly complements the harvest of wood products from native forests, the establishment of plantations is not offsetting the current rate of deforestation. Clearing for agriculture, often associated with uncontrolled logging and fuelwood...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124403

The Impacts of Pasture Insurance on Farmland Values
Provedor de dados: 31
Autores: Ifft,   Jennifer; Wu,   Shang; Kuethe,   Todd H.
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy; Agricultural Finance; Land Economics/Use; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/124317

The Dual Approach to Research Evaluation:A Simplified Empirical Illustration
Provedor de dados: 31
Autores: Hill,   Debbie J.; O'Donnell,   Christopher J.; Piggott,   Roley R.; Griffith,   Garry R.
In this paper, the dual approach to ex ante research evaluation in a multiple-input, multiple-output industry is explained and demonstrated. A simplified, illustrative model is developed based on a number of fundamental characteristics of the Australian wool industry and output-augmenting technical change. A normalised quadratic restricted profit function of Australian wool production is specified in terms of effective rather than actual prices. The estimated short-run supply elasticities are quite inelastic. The results of the simplified model show that the development and adoption of a 10 per cent yield-increasing wool technology would result in a 19.6 per cent fall in the actual price of wool and a 9.8 per cent increase in the actual quantity of wool...
Tipo: Presentation
Palavras-chave: Livestock Production/Industries; Research Methods/ Statistical Methods.
Ano: 2000
URL: http://purl.umn.edu/123661

Causative factors for changes in total factor productivity of Japanese agriculture under the era of climatic uncertainty
Provedor de dados: 31
Autores: Kunimitsu,   Yoji.
This study analyzed causative factors on TFP growth in Japanese agriculture. The regression analysis with consideration of correlation between factors demonstrated that without further deregulation for introducing new comers, enlarging farm management area and asset management for keeping public capital, agricultural TFP cannot be improved in the future.
Tipo: Presentation
Palavras-chave: Fertility of farmland; Human factor; Scale economies; Public capital stock; Knowledge capital stock; Technological progress; Total Factor Productivity; Agricultural and Food Policy; Production Economics; Productivity Analysis; Public Economics.
Ano: 2012
URL: http://purl.umn.edu/119727

VISIONARIES, FARMERS AND MARKETS: AN ECONOMIC HISTORY OF NEW ZEALAND AGRICULTURE
Provedor de dados: 31
Autores: Lattimore,   Ralph G.; Hawke,   Gary.
Tipo: Presentation
Palavras-chave: Community/Rural/Urban Development; Land Economics/Use.
Ano: 1999
URL: http://purl.umn.edu/123830

Nutrient Demand Elasticities with Noisy Measures of Household Resources
Provedor de dados: 31
Autores: Gibson,   John.
Many studies suggest that changes in household economic resources (incomes and expenditure) have little effect on nutrient intakes and child malnutrition in developing countries. This paper examines the impact that errors-in-variables have on inferences about the importance of household incomes to the calorie and protein demands of households. Results are based on a new household survey from Papua New Guinea, with repeated observations on households during the year. These repeated observations allow regression estimates to be corrected for the differing reliabilities of the explanatory variables.
Tipo: Presentation
Palavras-chave: Errors-in-variables; Income; Nutrition; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; I32; O15.
Ano: 1999
URL: http://purl.umn.edu/123807

The Economics of Organic Versus Conventional Cow-calf Production
Provedor de dados: 31
Autores: Gillespie,   Jeffrey M.; Nehring,   Richard F.
Costs, returns, and profitability of cow-calf farms that are organic or transitioning to organic are compared with those of cow-calf farms that are non-organic. A method of matching samples is used for the comparison. Results suggest higher cost of organic production due to higher unpaid labor, taxes and insurance, and overhead costs.
Tipo: Presentation
Palavras-chave: Matching Samples; Profit; Costs; Farm Management; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/119773

A meta-analysis of the response of calorie demand to income changes
Provedor de dados: 31
Autores: Ogundari,   Kolawole; Abdulai,   Awudu.
Over the past three decades, several studies have analyzed the response of calorie intake to income with varying and inconclusive results. This paper review these studies and employs meta-analysis to examine the potential bias in the calorie-income elasticity, as well as the impact of specific study attributes on these elasticities reported in the empirical literature. A total of 40 studies which yielded 99 estimated elasticities were considered. The results show the presence of publication (reporting) selection bias in the reported elasticities. Besides, the estimates revealed evidence of positive and significant empirical effect of income on calorie intake from all the studies that goes beyond publication bias. Study attributes such as ranking of the...
Tipo: Presentation
Palavras-chave: Calorie-income elasticity; Heterogeneity; Meta-analysis; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; D12; C01.
Ano: 2012
URL: http://purl.umn.edu/123287

Murray Darling Basin Irrigation Adaptation to Drought: A Statistical Evaluation
Provedor de dados: 31
Autores: Connor,   Jeffery D.; Ahmad,   Mobin-ud-Din; King,   Darran; Banerjee,   Onil; Mainuddin,   Mohammed; Gao,   Lei.
Tipo: Presentation
Palavras-chave: Crop Production/Industries; Research Methods/ Statistical Methods.
Ano: 2012
URL: http://purl.umn.edu/124266

Economic Impacts of GHG and Nutrient Reduction Policies in New Zealand: A Tale of Two Catchments
Provedor de dados: 31
Autores: Daigneault,   Adam J.; Greenhalgh,   Suzie; Samarasinghe,   Oshadhi.
Agricultural and forestry GHG emissions are a key feature of New Zealand’s emissions profile, and New Zealand is the only country, to date, to have indicated that agricultural and forestry emissions will be covered under their domestic climate policy – the New Zealand Emissions Trading Scheme. Coupled with climate policy development is the increasing scrutiny of agricultural impacts on water. This paper uses New Zealand Forest and Agriculture Regional Model (NZ-FARM) to assess the potential economic and environmental impacts of imposing both a climate and nutrient reduction policy on the agricultural and forestry industries in the Manawatu and Hurunui/Waiau catchments in New Zealand. We find that adding a scheme that reduces catchment-level nutrients by...
Tipo: Presentation
Palavras-chave: Agriculture and forestry modelling; Land use; Climate policy; Water quality; Greenhouse gas emissions; Nutrient leaching; Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124284

European Consumers’ Acceptance of Beef Safety-Improving Interventions at Different Stages of the Beef Chain: Primary Production, Slaughtering, Processing and Packaging
Provedor de dados: 31
Autores: Van Wezemael,   Lynn; Verbeke,   Wim; Kugler,   Jens O.; Scholderer,   Joachim; Ueland,   Oydis.
Following the occurrence of meat safety incidents during the nineties (Verbeke et al., 1999), considerable effort has been done to improve safety in the beef chain, both by policy and beef chain actors. Nowadays, a wide array of interventions to improve beef safety is applied at different stages through the beef chain. As a result the microbiological safety risk has been significantly reduced (Koohmaraie et al., 2005). Although the benefits for the sector and the end users seem to be rather obvious, the application of interventions and technologies that are used to enhance beef safety is not always communicated to consumers. Currently, communication related to technologies and processes used in beef production and processing from the sector to consumers is...
Tipo: Presentation
Palavras-chave: Agribusiness; Farm Management; Food Consumption/Nutrition/Food Safety; Production Economics.
Ano: 2011
URL: http://purl.umn.edu/122016

Spatial Variations in the Food Environment of Manhattan, NY
Provedor de dados: 31
Autores: Dimitri,   Carolyn; Geoghegan,   Jacqueline; Hansen,   Laura.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123979

Environmental Provisions in Free Trade Agreements
Provedor de dados: 31
Autores: Colyer,   Dale.
Numbers of free trade ageements and those with environmental provisons have grownn rapidly. Enviomental measures include those to protect and enhance the environment, environmental cooperation and citizen particpation activties.  Many appear to have made important contributions to environmental activities although often constrained by limited funds.
Tipo: Presentation
Palavras-chave: Free trade; Trade agreements; Environment; Agricultural and Food Policy; Environmental Economics and Policy; International Relations/Trade; F13; F18.
Ano: 2012
URL: http://purl.umn.edu/123723

THE ROLE OF ECONOMISTS IN FORMULATING AUSTRALIAN AGRICULTURAL POLICY IN THE 1950s
Provedor de dados: 31
Autores: Myers,   Laurel.
The paper forms part of a larger study into the development of agricultural economics in Australia and the influence of economists in agricultural policy formulation. This particular paper focuses on the 1950s and 1960s, a period of rapid growth in Australian agricultural economics. The Bureau of Agricultural Economics was building up an excellent reputation as an independent research agency within government and, together with other agricultural economic research organisations, significant research projects were undertaken. The profession further gained stature at this time, when it became institutionalised within the universities, when the professional society was formed and the first issue of the Australian Journal of Agricultural Economics was...
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy; Teaching/Communication/Extension/Profession.
Ano: 2000
URL: http://purl.umn.edu/123710

VALUATION OF INDIGENOUS FISHERIES
Provedor de dados: 31
Autores: Campbell,   David.
The Mabo [no. 2] 1992 High Court decision and consequent judicial and legislative actions resulted in a quantum shift in the recognition of Indigenous rights in Australia. The Croker Island 1998 decision verifies the existence of native title rights to the foreshore and marine environment. Methodologies for valuing Indigenous fisheries are examined in this report. Unlike those for non-Indigenous uses of fish resources, the methodologies for Aboriginal and Torres Strait Islander uses are poorly developed. This is because the legal and institutional framework for Indigenous rights are still being developed and because this area of economic concern has received minimal attention from economists. While a number of steps are taken in this report to facilitate...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123792

The Potential Role of Farm Forestry in the Wheat-Sheep Zone of NSW
Provedor de dados: 31
Autores: Hean,   Robyn L.; Cacho,   Oscar J.; Signor,   Anthony; Mullen,   John D.
The focus of this paper is the role of farm forestry in farming systems in the NSW wheatsheep zone. The wheat-sheep zone suffers from significant land degradation problems, and the environmental and economical sustainability of many farming systems is in question. Farm forestry provides the opportunity to diversify farmer incomes, increase agricultural productivity and provide environmental solutions. It is therefore proposed that the potential role of farm forestry in the wheat-sheep zone is to provide an environmentally and economically sustainable future for farming systems, through tree planting for multiple benefits. A general model is developed for the purpose of economic analysis of agroforestry systems in the wheat-sheep zone using a bioeconomic...
Tipo: Presentation
Palavras-chave: Farm forestry; Farming systems; Bioeconomics; Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123659

European School Fruit Scheme in North Rhine-Westphalia (Germany) - Does it work?
Provedor de dados: 31
Autores: Wingensiefen,   Sarah; Maschkowski,   Gesa; Hartmann,   Monika.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123986

35th Annual Conference - Australian Agricultural Economics Society, The Univeristy of New England, Armidale, February 1991
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1991
URL: http://purl.umn.edu/118927

Health Insurance and Joint Off‐Farm Labor Allocation Decisions of Farm Families
Provedor de dados: 31
Autores: D'Antoni,   Jeremy M.; Mishra,   Ashok K.
Contact author to request a copy of this paper.
Tipo: Presentation
Palavras-chave: Health insurance coverage; Endogeneity; Copula; Off-farm labor supply; Dependence; Bivariate tobit; Coupled farm programs payments; Decoupled farm program payments; Agribusiness; Farm Management; Food Security and Poverty; Labor and Human Capital; Public Economics; C34; I13; J12; J22; J38; J43; Q12; Q18.
Ano: 2012
URL: http://purl.umn.edu/119646

Where to From Here?
Provedor de dados: 31
Autores: Taylor,   Michael J.
Tipo: Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2001
URL: http://purl.umn.edu/124453

Misurare la buona governance dei territori rurali: un possibile set di indicatori
Provedor de dados: 31
Autores: Franceschetti,   Giorgio; Da Re,   Riccardo; Secco,   Laura.
Il significato più comune e condiviso del termine governance si riferisce alla capacità della pubblica amministrazione di gestire e dirigere network, coinvolgendo attori pubblici e privati di varia natura in processi politico-decisionali, promuovendo il dialogo, la condivisione di responsabilità, la partecipazione e il coordinamento di molti attori a molti livelli. Modalità organizzative e d’interazione tra i vari soggetti che siano in grado di garantire una “buona governance”, soprattutto in relazione all’uso delle risorse naturali e a alla valorizzazione del capitale sociale, stanno diventando fattori chiave nello sviluppo rurale. Il concetto di “buona governance” riflette la crescente domanda espressa dalla società civile di maggior partecipazione dei...
Tipo: Presentation
Palavras-chave: Buona governance; Risorse naturali; Sviluppo rurale; Istituzioni a scala locale; Indicatori; Social network analysis; Community/Rural/Urban Development; Q 58.
Ano: 2012
URL: http://purl.umn.edu/124105

Price Insurance, Moral Hazard and Agri-environmental Policy
Provedor de dados: 31
Autores: Fraser,   Rob W.
Motivated by recent EC proposals to “strengthen risk management tools” in the CAP in relation to farmers’ increased exposure to market price risk, this paper draws attention to a potential negative consequence of such a change in the CAP – an associated increase in cheating behaviour by farmers in the context of environmental stewardship. A theoretical framework for this policy problem is developed and used not just to illustrate the problem, but also to propose a solution – specifically to combine the introduction of CAP-supported policy changes which reduce farmers’ exposure to market-based risk with changes in environmental stewardship policies which increase the riskiness of cheating and thereby discourage such behaviour.
Tipo: Presentation
Palavras-chave: Demand and Price Analysis; Environmental Economics and Policy; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/124305

THE DESALINATION PLANT, THE NORTH-SOUTH PIPELINE AND THE WELFARE OF MELBURNIANS
Provedor de dados: 31
Autores: Edwards,   Geoff W.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124292

Price sensitivity within and across retail formats
Provedor de dados: 31
Autores: Widenhorn,   Andreas; Salhofer,   Klaus.
Paper removed at the request of the first author, October 2013.
Tipo: Presentation
Palavras-chave: Demand; Elasticity; Discount; Retail formats; International Relations/Trade; D12.
Ano: 2012
URL: http://purl.umn.edu/124108

Economic Efficiency Adjusted for Risk Preferences
Provedor de dados: 31
Autores: Yeager,   Elizabeth A.; Langemeier,   Michael R.
This study investigates the impact of risk preferences on economic efficiency scores.  Risk averse individuals may be less likely to adopt new technologies and have lower production levels than individuals with other risk preferences.  Nonparametric techniques are used to estimate cost and revenue efficiency for a sample of Kansas farms.  Each farm had a risk preference score and the scores in the sample ranged from 5 to 86 where a smaller value represents greater risk aversion.  Efficiency estimates were first calculated using traditional input and output measures.  Efficiency was re-estimated including the inverse risk preference score as a non-discretionary input.  Comparisons were made between the characteristics of the farms with an observed...
Tipo: Presentation
Palavras-chave: Cost Efficiency; Revenue Efficiency; Risk Preference; Agribusiness; Farm Management; Production Economics; Risk and Uncertainty; C14; D22; D81.
Ano: 2012
URL: http://purl.umn.edu/124012

Seasonal Farm Price Patterns in Selected U.S. Fresh Fruit Markets
Provedor de dados: 31
Autores: Plattner,   Kristy; Perez,   Agnes C.; Thornsbury,   Suzanne.
Our poster analyzes seasonal farm price patterns in five major U.S. fresh fruit markets (i.e. strawberries, apples, oranges, peaches and grapes) between 1980 and 2010. Shifts in the seasonal patterns between decades (1980-89, 1990-99, and 2000-10) signal price response to changes in market conditions, demand trends, and global linkages that have taken place overtime in these fruit markets.  Statistical comparatives and graphical analysis form the basis for assessment using U.S. Department of Agriculture, National Agricultural Statistics Service (NASS) monthly grower price data. Extended seasons through geographical and varietal diversity in major producing areas have had a smoothing effect on the seasonal behavior of fresh strawberry prices but a distinct...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124024

Revisiting N fertilisation rates in low-rainfall grain cropping regions of Australia: A risk analysis
Provedor de dados: 31
Autores: Monjardino,   Marta; McBeath,   T.; Brennan,   Lisa E.; Llewellyn,   Rick S.
Mallee farmers minimize downside risk in dry seasons by applying low rates of nitrogen (N) fertiliser to their cereal crops. The opportunity to respond to and capitalize on the better years is further limited as most inputs are applied upfront at sowing. We used an economic-risk decision model to identify a range of tactical N fertilisation options that increase net returns, while minimising risk for farmers with different risk attitudes. Importantly, we concluded that when accounting for long-term risks affecting farmers, the use of higher N rates can play a risk-reducing role in a highly variable environment like the Mallee.
Tipo: Presentation
Palavras-chave: Nitrogen; Risk; Variance; Crop simulation; Economic net returns; Decision analysis; Zone management; Monte Carlo; Mallee; Crop Production/Industries; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/124339

Economics in Technical Models of Farm Systems - Better none than some
Provedor de dados: 31
Autores: Kelly,   Hugh; Malcolm,   Bill.
Models of technical parts of farm systems have proliferated over the past decade. In this paper, the difference between the decision-information deriving from the farm management economic analysis that is included in a technical systems model, and the results derived from analysing the technical information that comes out of the model using standard farm management tools, is demonstrated, using case studies. In essence the argument of this paper is that in much systems simulation work provides sound technical coefficients about the operation of a farming system, which can then form the basis of, and be used in, whole farm management analyses. It is sufficient, to provide these coefficients without the systems model itself linking to some half-baked...
Tipo: Presentation
Palavras-chave: Farm Management.
Ano: 1999
URL: http://purl.umn.edu/123826

Exploring Variations in Income Growth in Southeastern United States
Provedor de dados: 31
Autores: Gyawali,   Buddhi Raj; Banerjee,   Swagata (Ban); Hill,   Anquinette; Bukenya,   James O.
This paper examined income convergence in 875 counties of the 10-state southeastern region using Census data for 1980 and 2000. Logarithmic difference of average per capita income between those years was regressed on socioeconomic variables. Changes in education, labor force, and employment were strong determinants of income growth.
Tipo: Presentation
Palavras-chave: Consumer/Household Economics; Financial Economics; Public Economics.
Ano: 2012
URL: http://purl.umn.edu/120933

Kansas Grain Supply Response to Economic and Biophysical Factors, 1977-2007
Provedor de dados: 31
Autores: Boussios,   David; Barkley,   Andrew P.
This research identifies and quantifies the impact of biophysical and economic variables on Kansas grain supply for the period 1977- 2007. This research estimates total supply response by aggregating yield and acreage responses. Previous methods have effectively analyzed the response of crop supply through either acreage or yield responses. However, the method proposed in this research incorporates both yield and acreage response to various production variables through recursive modeling. The results include the negative impact of acreage expansion on aggregate yields and thus the impact on total supply. The results also show that previous methods underestimate supply response elasticities by as much as 97%. Furthermore, this research estimates supply...
Tipo: Presentation
Palavras-chave: Yield; Acreage; Supply; Grain; Extensive Margin; Producer Expectations; Climate; Weather; Agribusiness; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Land Economics/Use; Production Economics; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124385

Razao de hedge otima de minimo MPI (momento parcial inferior) no mercado futuro de boi gordo na BM&amp;F
Provedor de dados: 31
Autores: Marques,   Pedro Valentim; Martines-Filho,   Joao Gomes; Cruz Junior,   Jose Cesar.
Uma vez que o pecuarista decide-se por utilizar o mercado futuro de boi gordo da BM&amp;F como ferramenta de redução de risco de sua produção, uma das primeiras perguntas a serem respondidas é: quanto se fazer de hedge? Esta pergunta tem sido frequentemente respondida através da utilização do modelo de razão de hedge de mínima variância. O presente trabalho teve como objetivo apresentar um modelo alternativo à abordagem tradicional - denominado razão de hedge de mínimo momento parcial inferior (MPI) - para se calcular a razão de hedge ótima. O modelo alternativo utiliza o momento parcial inferior como medida de risco. Ambas as razões de hedge foram calculadas e suas performances foram verificadas através da avaliação dos resultados obtidos com suas...
Tipo: Presentation
Palavras-chave: Mercados futuros; Razao de hedge otima; Momentos parciais inferiores; Boi gordo; Futures markets; Optimal hedge ratio; Lower partial moments; Live cattle; Marketing; Risk and Uncertainty.
Ano: 2008
URL: http://purl.umn.edu/119148

Can local be the new organic? Food choice motives and willingness to pay
Provedor de dados: 31
Autores: Roosen,   Jutta; Kottl,   Barbara; Hasselbach,   Johanna.
Due to growth and changing distribution channels for organic food in Germany, there is some concern that organic food will lose against local food in the competition for conscious consumers. In this paper we will present the results of a survey in Bavaria searching for consumer motives and label recognition. A choice experiment using different prices, brands and labels is conducted for bread, beer and milk. Results show the importance of local production to the surveyed consumers, similarly for conventional as for organic products.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123512

Key Challenges and Solutions in Delivering Successful Aid for Commercial Ventures in Asia
Provedor de dados: 31
Autores: Gwynne,   Beris.
Tipo: Presentation
Palavras-chave: International Development.
Ano: 2001
URL: http://purl.umn.edu/124438

Product differentiation and brand competition in the Italian breakfast cereal market: a distance metric approach
Provedor de dados: 31
Autores: Sckokai,   Paolo; Varacca,   Alessandro.
This article employs a nation-wide sample of supermarket scanner data to study product and brand competition in the Italian breakfast cereal market. An Almost Ideal Demand System (AIDS) modelled to include Distance Metrics (DMs) and consistent with the methodology proposed by Pinske, Slade and Brett (2002), is estimated to study demand responses, substitution patterns, own-price and cross-price elasticities. Estimation results indicate a certain level of brand loyalty and opposite attitudes towards product type. Elasticities point out the presence of patterns of substitution within products sharing the same brand and similar nutritional characteristics.
Tipo: Presentation
Palavras-chave: Industrial Organization.
Ano: 2012
URL: http://purl.umn.edu/124102

Are Italian farming households actually poorer than other non agricultural households? An empirical analysis.
Provedor de dados: 31
Autores: Rocchi,   Benedetto; Stefani,   Gianluca; Romano,   Donato; Landi,   Chiara.
Tipo: Presentation
Palavras-chave: Income distribution; Agricultural households; Farm Problem; Italy; Consumer/Household Economics; Q12; I32.
Ano: 2012
URL: http://purl.umn.edu/124128

Reconciling industry policy and comparative advantage: the regional distribution of China’s cattle and beef industry
Provedor de dados: 31
Autores: Waldron,   Scott A.; Brown,   Colin G.
Much has been written in recent years on ‘local state corporatism’, centre-region relations, government and enterprise reform and on sustainable rural and agricultural development in China. Based on some of the theoretical underpinnings of this literature, and on extensive fieldwork in the full range of administrative levels, this paper presents an institutional approach to one Chinese rural industry. For a number of reasons, the Chinese cattle and beef industry serves as a highly revealing case study. While the industry only began developing along commercial lines in the 1990s, institutional forces have been instrumental, and perhaps more important than market forces, in forging the industry along its particular development path. The paper highlights the...
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy.
Ano: 2000
URL: http://purl.umn.edu/123736

Gradual Switching Structural Changes of Meat Consumption in Taiwan
Provedor de dados: 31
Autores: Hsu,   Jane Lu.
This paper utilized a linear approximate version of the Almost Ideal Demand System to evaluate structural changes of meat consumption in Taiwan. Time transition paths for each product were identified and first-order autocorrelation was taken into consideration. Structural changes of beef consumption (1979-1984) were completed before structural changes of other products had started. Shifting in consumption patterns of pork (1990-1995) and poultry (1988-1994) took about the same time length. Structural changes of fishery products (1994-1996) occurred toward the end of the time period. With the gradual switching time paths, estimated elasticities show that own-price elasticities for pork, beef, and fishery products became more responsive to their own-price...
Tipo: Presentation
Palavras-chave: Gradual switching structural changes; Meat consumption; LA/AIDS; Time transition paths; Elasticities; Food Consumption/Nutrition/Food Safety.
Ano: 2000
URL: http://purl.umn.edu/123663

A Game Theoretic Approach to Organic Foods: An Analysis of Asymmetric Information and Policy
Provedor de dados: 31
Autores: McCluskey,   Jill J.
Demand for healthy, safe, and environmentally friendly food products has been increasing. In response, producers are marketing organic and other quality-differentiated foods, sometimes claiming to have followed sound environmental and animal welfare practices. These products frequently have unobservable quality attributes. If the profitmaximizing producer is able to deceive the consumer with a false claim, then he or she will enjoy a higher price with lower production costs (compared to the full disclosure outcome). The analysis described in this paper shows that repeat-purchase relationships and third-party monitoring are required for high-quality credence goods to be available. Policy implications of this analysis for national organic food standards are...
Tipo: Presentation
Palavras-chave: Credence goods; Organic foods.; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; L15; Q13.
Ano: 1999
URL: http://purl.umn.edu/123706

The Malthusian Paradox: Declining Food Prices in the Very Long Run
Provedor de dados: 31
Autores: Bloch,   Harry; Sapsford,   David.
More than two centuries ago in his Essay on the Principle of Population, Thomas Malthus famously issued his dire prediction that mankind was doomed to survival at a subsistence level. His concept of population growth expanding to absorb the available food supply has been roundly contradicted by history, thanks in part to a declining birth rate in rich countries. However, economics is still the “dismal science”, as the underlying idea of natural resource scarcity impinging on the prospects for progress remains a cornerstone of modern economics. In the case of agriculture, the proposition is that more people or richer people increase the demand for food and given the constraint on arable land, this means that food becomes scarce. In economics, price is taken...
Tipo: Presentation
Palavras-chave: Malthus; Food prices; Schumpeter; Demand and Price Analysis.
Ano: 2012
URL: http://purl.umn.edu/124240

Outlook for Fish to 2020: A Win-Win-Win for Oceans, Fisheries and the Poor?
Provedor de dados: 31
Autores: Ahmed,   Mahfuzuddin.
The world has observed an unprecedented rise in production, consumption and trade of fish during last three decades. Developing countries as a whole supply nearly 75% of the fish, and represent 50% of the value of global fish trade. At a time when receipts from traditional agricultural exports have been declining, export earnings from fish seem to be paying the food imports bills in many low-income food-deficient countries. While these trends are likely to continue to 2020, questions are being raised about the integrity of world’s oceans and fisheries, and the true role of fisheries in eliminating poverty and improving nutritional security of the poor. This paper reviews the changing structure of fish supply, demand and trade, and investigates the impact...
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/124077

Disparities in Retail Store and Fruit and Vegetable Access by Area Racial Segregation
Provedor de dados: 31
Autores: Adu-Nyako,   Kofi; Okafor,   Ralph.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123987

Product Information and Willingness-to-Pay: A Case Study of Fair Trade Coffee on Chinese Market
Provedor de dados: 31
Autores: Yang,   Shang-Ho; Guan,   Huanda; Hu,   Wuyang; Liu,   Yun.
Poster Presentation
Tipo: Presentation
Palavras-chave: Product information; Willingness-to-pay; Fair trade coffee; Chinese market; Agribusiness; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Marketing; Research Methods/ Statistical Methods; D12; Q13.
Ano: 2012
URL: http://purl.umn.edu/124360

The Livestock Revolution: A Pathway out of Poverty?
Provedor de dados: 31
Autores: Vercoe,   John E.
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Livestock Production/Industries.
Ano: 2003
URL: http://purl.umn.edu/124023

An Empirical Assessment of Simultaneous Ethanol Policy Changes on U.S. Agricultural Markets
Provedor de dados: 31
Autores: Brown,   James A.; Bekkerman,   Anton; Atwood,   Joseph A.; Watts,   Myles J.
In the late 2000s, corn prices rose rapidly and were closely followed by prices of other major agricultural commodities. A widespread explanation for these market changes is an increased demand for corn in the production of ethanol, prompted by the introduction of programs intended to encourage biofuels production in the United States. In response to political pressures, the U.S. Congress considered amending three ethanol policies. It is likely that the interaction among the three policies can exacerbate these distortions. This study seeks to model the effects of simultaneous policy changes on multiple sectors of the blended gasoline marketing channel.
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 2012
URL: http://purl.umn.edu/124177

Adoption and Continued Use of Contour Cultivation in the Highlands of Southwest China
Provedor de dados: 31
Autores: Liu,   Hongmei; Huang,   Qiuqiong.
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Land Economics/Use.
Ano: 2012
URL: http://purl.umn.edu/123952

What Can We Learn from Best Practices Regarding Food Chain Transparency?
Provedor de dados: 31
Autores: Molnar,   Adrienn; Van Lembergen,   Katrien; Gellynck,   Xavier; Sebok,   Andras; Berczeli,   Attila.
This paper reports on food chain transparency. The research specifically aims to investigate best practices. Therefore, inductive research was conducted, starting with the identification of best practices. Further, underlying patterns were investigated to derive hypotheses and to develop a theoretical framework. These were confronted with literature findings which resulted in the validation of the hypotheses and the theoretical framework. Overall it can be concluded that several types of food chain transparency exist, whereas the different types represent a hierarchy of transparency domains, and that the basis mainly applies to information quality. In addition, it is shown that performance indicators measure directly or indirectly the success of...
Tipo: Presentation
Palavras-chave: Inductive research; Best practices; Transparency; Food chain; Agribusiness; Food Consumption/Nutrition/Food Safety; Food Security and Poverty.
Ano: 2011
URL: http://purl.umn.edu/122030

Global Water and Food Security: Emerging Issues
Provedor de dados: 31
Autores: Rosegrant,   Mark W.; Cline,   Sarah A.; Valmonte-Santos,   Rowena A.
Feeding the world’s population is an ongoing challenge that incorporates issues such as economic growth and equity, sustainable natural resource management, agricultural research and technology innovation, and effective institutions and governance. Many emerging factors will affect our ability to address this challenge into the future, as we respond to population growth, resource degradation and scarcity, climate change and so on. To a large extent, agricultural production growth will depend on irrigation, but the future of irrigation water supplies is increasingly constrained by competition for water from other sectors. Declining water quality, falling groundwater tables, and growing environmental demands for water are further constraints, and...
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/124464

Analysis of Participation in Multifunctional Agriculture:  U.S. Rice Farms
Provedor de dados: 31
Autores: Tur Cardona,   Juan; Wailes,   Eric J.; Dixon,   Bruce L.; Danforth,   Diana M.
Multifunctional agriculture is particularly fundamental to some working lands conservation policies and programs, such as the Environmental Quality Incentive Program (EQIP), Conservation Security Program (CSP) and Wildlife Habitat Incentive Program (WHIP). Farmers can also be engaged in providing recreational and agri-tourism services such as hunting, fishing, bird-watching, farm tours, petting zoos and hospitality services. Using the Agricultural Resource Management Survey (ARMS) we analyze factors associated with participation in conservation, recreation and agri-tourism activities as a function of farm structure, farm financial measures, production practices, and socio-demographic characteristics of the farm operator. To estimate the functional...
Tipo: Presentation
Palavras-chave: Multifunctional agriculture; Agri-environmental policy; Rice; Logistic model; Agricultural and Food Policy; Land Economics/Use; Q18; Q26; Q28.
Ano: 2012
URL: http://purl.umn.edu/119768

The use of information and communication technologies in the modernization of Caribbean agriculture: Focus on agricultural extension
Provedor de dados: 31
Autores: Ganpat,   Wayne G.; Ragbir,   Sarojini; de Freitas,   Claudette.
Bridgetown, Barbados 6th – 10th July, 2009
Tipo: Presentation
Palavras-chave: Agriculture; Development; Extension; Information Communication Technologies; Research and Development/Tech Change/Emerging Technologies; Teaching/Communication/Extension/Profession; Q16.
Ano: 2010
URL: http://purl.umn.edu/122663

Grocery Purchasing in the Food Desert Environment: Constraints Outweigh Preferences
Provedor de dados: 31
Autores: Zachary,   Drew A.; Palmer,   Anne M.; Surkan,   Pamela J.
Data show that the food desert environment is correlated with high risk of diet-related illness in low-income urban communities. Using an empirical model of grocery purchasing decision processes, we explained how specific components of the economic and structural environment influenced purchasing decisions that conflicted with shoppers understanding of healthy eating. In this paper we describe how the policy environment and suppliers influence purchasing; why interventions to increase healthy purchases must be designed using an understanding of food desert system dynamics; and why several intervention approaches are incomplete. We recommend a complex of evidence-based strategies to facilitate healthy purchasing in urban American food deserts.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123976

Retail Wastelands: Characteristics and Influential Factors of Food Deserts
Provedor de dados: 31
Autores: Dutko,   Paula; Ver Ploeg,   Michele; Farrigan,   Tracey L.
Applying a census tract-level definition of food deserts, areas with limited access to affordable and healthy food, ERS has identified over 6,500 food desert tracts in the U.S. based on data from the 2000 Census of the Population. In this report, we examine the socioeconomic and demographic characteristics of these tracts to see how they differ from other tracts. We describe the demographic and socioeconomic characteristics of food desert census tracts compared with all other census tracts and how these tract characteristics have changed over time. Then, using multivariate logit analysis and data from the 1990 Census and 2000 Census, we attempt to isolate which characteristics separate food desert tracts from other low-income census tracts, to help...
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123201

Estimating The Demand For Food And Non-Food Items Using An Almost Ideal Demand System Modelling Approach
Provedor de dados: 31
Autores: Agbola,   Frank W.
An Almost Ideal Demand System model is used to examine consumer behaviour in India using household survey data for the period 1973-74 through to 1993-94. The empirical results indicate that, for commodity groups, demand is inelastic, except for other foods and non-foods. The expenditure elasticity estimates indicate that milk and non-foods are luxury goods, while pulses, cereals, edible oil, meats, fruits and vegetables and other foods are necessities in the Indian diet. The results indicate that, for any increase in future expenditure, the largest percentage increase will be allocated to non-foods, followed by cereal, other foods, milk, fruits and vegetables, edible oil, pulses and meats, in that order. Estimates of future food supply and demand growth in...
Tipo: Presentation
Palavras-chave: AIDS and LA/AIDS models; India; Demand for food and non-foods.; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety.
Ano: 2000
URL: http://purl.umn.edu/123589

Risk and Nitrogen Application Decisions in Florida Potato Production
Provedor de dados: 31
Autores: Asci,   Serhat; Borisova,   Tatiana; VanSickle,   John J.; Zotarelli,   Lincoln.
This study focuses on development of agricultural best management practices (BMPs) for potato production areas in Northeast Florida, and presents the results of the initial situation assessment. BMP implementation is the primary strategy used by agencies and farmers to improve the efficiency and to ensure environmental sustainability of agricultural production. Although BMPs are defined as “economically feasible” and “cost-effective”, economic analysis conducted as a part of BMP development has been limited, leaving the room for disagreement about economic impacts of specific BMPs. As a part of the situation assessment, we used interviews, group discussions, a survey, and a field trip to collect information about farmers’ production practices and to...
Tipo: Presentation
Palavras-chave: Florida potato production; Partial budget analysis; Risk analysis; Best management practice; Nitrogen fertilization; Agribusiness; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Production Economics; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/119797

Conclusions
Provedor de dados: 31
Autores: Peacock,   Jim.
Tipo: Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2002
URL: http://purl.umn.edu/123937

Do Environmental Interventions Impact Elementary School Students’ Lunchtime Milk Selection?
Provedor de dados: 31
Autores: Waite,   Alexandra; Goto,   Keiko; Chan,   Kenny; Giovanni,   Maria; Wolff,   Cindy.
This research examines whether environmentally based intervention strategies increase elementary students’ selection of white milk. At intervention school one, white milk was easily accessible, but students had to ask for chocolate milk. As an outcome, students increased their selection of white milk compared to control school students (p≤0.001). At intervention school two, the visual cue of a threefold greater quantity of white compared to chocolate milk did not significantly alter selection patterns. This research indicates that requiring students to ask for an item rather than self-serve can help modify food selections and serve as a tool for obesity prevention.
Tipo: Presentation
Palavras-chave: Milk consumption; School lunch; Behavioral economics; Food Consumption/Nutrition/Food Safety; A12; I10.
Ano: 2012
URL: http://purl.umn.edu/123513

The value of information from research to enhance testing or monitoring of soil acidity in Western Australia
Provedor de dados: 31
Autores: O'Connell,   Michael; Bathgate,   Andrew D.; Glenn,   N.A.
The soil acidity research and extension program in Western Australia is made up of a number of projects, all of which are working towards the overall aim of helping farmers to manage soil acidity profitably. As a means of achieving this aim scientists are undertaking research to provide information that will enable farmers to better quantify potential yield losses due to subsoil aluminium, and to adopt liming strategies to prevent these losses. In this paper we present estimates of the value to farmers of information provided by this aspect of the research. A bio-economic model is used to calculate the profitability of liming for different conditions and Bayesian Decision analysis is employed to estimate the payoff resulting from incrementally refining a...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/124501

Volatility in Agriculture Commodity Prices in India: Impact and Macroeconomic and Sector-Specific Policy Responses
Provedor de dados: 31
Autores: Bathla,   Seema.
Globalization and trade liberalization have exposed agricultural sector of many developing countries to sudden disturbances, caused not just by demand-supply conditions within their economies but also by volatility in global commodity prices, exchange rate and surge in imports. This paper evaluates the magnitude of sensitivity of Indian agriculture to these factors, and explores policy options that may neutralize their adverse effects, maintain price incentives and stability. The analysis is undertaken for one important tradable commodity viz. wheat by applying a structural econometric model, separately under the exportable and importable scenarios from 1980-81 to 2009-10. Findings reveal wheat to be increasingly driven by an incentive structure based on...
Tipo: Presentation
Palavras-chave: Agricultural trade; Price transmission; Volatility; Macroeconomic policies; International Relations/Trade; Risk and Uncertainty; Q17; C22; E69; E60.
Ano: 2012
URL: http://purl.umn.edu/122543

Facilitating access to rural services in Vietnam: The invisible social capital link
Provedor de dados: 31
Autores: Quoc,   Hoang Dinh; Dufhues,   Thomas; Buchenrieder,   Gertrud.
This paper investigates the effects of individual social capital on the access of rural households to services. In the context of agriculture economics, an innovative data collection approach is used to determine social capital. The approach originates from the field of sociology and entails a personal network survey. We define four social capital variables according to tie strength (bonding/bridging) and social distance (bondinglink/bridginglink) between the respondent and his/her network member. The econometric results suggest that social capital with weaker ties in combination with socially distant ties (bridginglink social capital) can potentially improve households’ access to rural services.
Tipo: Presentation
Palavras-chave: Consumer/Household Economics; Research Methods/ Statistical Methods; Rural services; Social capital; Rural households; Vietnam.
Ano: 2012
URL: http://purl.umn.edu/123402

Estimating Plate-Lunch Demand: A Bottom-Line Assessment of the Competitive School Food Environment
Provedor de dados: 31
Autores: Pham,   Matthew V.; Roe,   Brian E.
Direct regulation of school lunch content seems an intuitive approach for improving the nutrition of many American children. However, little is known about substitution patterns in response to such efforts, particular the likelihood that children and parents will turn to competitive foods outside the control of schools such as packed lunches. To our knowledge, no previous work documents if increasing the healthfulness of school lunches leads children to leave the school lunch line for potentially less nutritious options. To address this paucity of information we estimate the demand for school lunches as a function of calories provided and entrée protein source for a single elementary school. Our results suggest a highly inelastic response to a meal’s...
Tipo: Presentation
Palavras-chave: Food Environment; Nutrition; Revealed Preference; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Marketing.
Ano: 2012
URL: http://purl.umn.edu/124097

Farm Operator Entry and Exit Behavior: A Longitudinal Analysis
Provedor de dados: 31
Autores: Adamson,   Dwight W.; Waugh,   Andrew.
Farm structure is experiencing a persistent change.  Since the early 1980s, US farms specializing in crops have constantly declined in number and grown in average size.  Crop production has moved to large farms at the expense of small and medium sized farms. This shift in farm structure to more concentrated production is complex.  Market forces such as technological change and changing factor input prices are likely contributors as they have been in the past.  Another factor that has generated considerable interest is the role of commodity program payments.  Commodity payments are tied to a farm’s current or historical production.  Therefore, larger farms tend to receive the greatest share of commodity program payments. However, the extent that commodity...
Tipo: Presentation
Palavras-chave: Farm Operator; Entry; Exit; Community/Rural/Urban Development; Labor and Human Capital; Q12; J61; J62.
Ano: 2012
URL: http://purl.umn.edu/124053

Economic and environmental effects of an EU flat rate for the Dutch agricultural sector
Provedor de dados: 31
Autores: Helming,   John F.M.; Peerlings,   Jack H.M.
The objective of this research is to give insights into the production, income and environmental effects of the introduction of an EU flat rate for Dutch agriculture. For this purpose, a detailed agri-environmental programming model for Dutch agriculture is used.  Results of the EU flat rate scenario are compared to a reference scenario that describes agricultural production in the Netherlands in 2020. Results show that total gross margin in Dutch agriculture decreases because of the EU flat rate with 7%. The supply of starch potatoes and cow milk decreases most. Production of seed and consumption potatoes, vegetables and intensive livestock products increases slightly. This is largely due to a shift of farm payments from milk and starch potatoes...
Tipo: Presentation
Palavras-chave: EU flat rate; Mathematical programming; Income volatility; Agricultural and Food Policy; Risk and Uncertainty; Q1; D8.
Ano: 2012
URL: http://purl.umn.edu/122481

The Livestock Revolution: A Pathway from Poverty?
Provedor de dados: 31
Autores: Downer,   Alexander.
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Livestock Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2003
URL: http://purl.umn.edu/124005

Queensland’s Producer Representative Bodies: Challenges and Changes
Provedor de dados: 31
Autores: Jarratt,   Ian S.; Franco-Dixon,   Mary Ann.
Information is provided on the membership and roles of Queensland producer representative bodies (PRBs) obtained from a postal survey of PRBs. The challenges currently facing PRBs, and their responses, are also identified and discussed. PRB representation of member interests is also described and discussed.
Tipo: Presentation
Palavras-chave: Policy; Development; Producer representative bodies; Agribusiness.
Ano: 2000
URL: http://purl.umn.edu/123678

A Dinamica Desigual do Desenvolvimento Regional no Nordeste: o Polo Assu/Mossoro (RN)
Provedor de dados: 31
Autores: Nunes,   Emanoel Marcio; Schneider,   Sergio.
O objetivo deste trabalho é apresentar evidências acerca das transformações resultantes da globalização e de processos de localização em áreas de dinamismo econômico da região Nordeste do Brasil, em que a mobilidade de capital tem provocado mudanças e alterado os diversos tipos de regulação. Sob a perspectiva do desenvolvimento rural, a questão que se coloca é: como acontece a inserção de uma região como a Nordeste do Brasil, fortemente rural e dependente da agricultura, no processo de globalização, e como ocorre a inclusão e participação dos atores locais? A hipótese é a de que tanto a inserção da região como a inclusão e a participação dos atores locais ocorrem de forma subordinada e dependente acentuando as desigualdades regionais e a drenagem da...
Tipo: Presentation
Palavras-chave: Mobilidade de capital; Sistema agro alimentar; Desenvolvimento rural; Capital mobility; Agro food system; Rural development; Agribusiness; Community/Rural/Urban Development.
Ano: 2008
URL: http://purl.umn.edu/119006

Small-Scale Beef Cattle Production in East Java, Indonesia
Provedor de dados: 31
Autores: Priyanti,   Atien; Hanifah,   Vyta W.; Mahendri,   I.G.A.P.; Cahyadi,   F.; Cramb,   Rob A.
Despite its small area and intensively cropped landscape, East Java accounts for 30% of Indonesia’s beef cattle population. About two million households draw on family labour to raise cattle in backyard sheds and small enclosures, largely for cash income. The paper reports on a study in two contrasting sites – irrigated lowlands and rainfed uplands – to explore the constraints facing cattle producers in these environments and possible means to enhance their production systems and incomes. In particular, the paper focuses on the issue of feed supply and the local market that has emerged for agricultural by-products (rice straw, maize stover, and legume residues) and planted forage grasses. The research shows that intensive cattle production can provide a...
Tipo: Presentation
Palavras-chave: Smallholders; Beef cattle; Crop by-products; Integrated farming systems; Rural livelihoods; Community/Rural/Urban Development; Livestock Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124411

FILLING THE GAP: EXPLORING INTERNAL CHALLENGES AND OPPORTUNITIES TO SUCCESSFUL STUDENT RECRUITMENT IN APPLIED ECONOMICS DEPARTMENTS
Provedor de dados: 31
Autores: Espey,   Molly; Boys,   Kathryn A.
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2012
URL: http://purl.umn.edu/119816

Impact of information and communication technology (ICT) on international trade in fruit and vegetables: A gravity model approach
Provedor de dados: 31
Autores: Thiemann,   Franziska; Fleming,   Euan M.; Mueller,   Rolf A.E.
Globalization results when markets become more integrated because of reduced transaction and transport costs. These costs have fallen because of sustained advances in transport technology and, more dramatically, in digital information and communication technology (ICT). Although communication costs tend to be a minor component of total trading costs, reductions in these costs may strongly stimulate international trade. The empirical evidence in support of this effect is, however, scant and its strength may depend on the composition of ICT and the nature of the product being traded. We test the hypothesis of an ICT effect on trade in bananas, oranges, tomatoes, and vegetables and fruit in general. We employ a gravity model of international trade between...
Tipo: Presentation
Palavras-chave: Gravity model; Information and communication technology (ICT); International trade; Fruit and vegetables; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/123840

Demand for Food-Away-From-Home: A Multiple Discrete/Continuous Extreme Value Model
Provedor de dados: 31
Autores: Richards,   Timothy J.; Mancino,   Lisa.
Obesity is a complex problem with many causes, from genetic and behavioral disorders to environmental factors, including access to calorie-dense fast food meals. Economists and epidemiologists disagree on the importance of access to fast food as a causal factor for obesity, but agree that any policy regulating access to fast food will likely use the price system, through taxes or other means to raise the relative cost of buying fast food. Yet, little is known of the structure of demand for food-away-from-home (FAFH). This study provides estimates of the price-elasticity of demand for four di¤erent types of FAFH using a novel new dataset from NPD, Inc. By including physiological measures of obesity, physical activity and health status as additional...
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2011
URL: http://purl.umn.edu/123390

Economic background of families – is it vital for food decisions? A case study of school milk orders in Germany
Provedor de dados: 31
Autores: Weible,   Daniela; Buergelt,   Doreen; Christoph,   Inken B.; Peter,   Guenter; Salamon,   Petra.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123985

DYNAMIC CONTROL AS MEASURE TO STABILIZE AGRICULTUTAL MARKETS: On Theory and Options to Correct Cyclical Movements
Provedor de dados: 31
Autores: Nuppenau,   Ernst-August.
This paper deals with a control theory approach to stabilize cyclical price movements. Firstly, we pursue a welfare economist’s approach, delineating a public objective function derived from consumer and producer surplus as well as trade budget at world market price. Trade is a con¬trol variable and the market price is a state variable. Moreover we assume adaptive formation of price expectation at the producer side. Secondly the control problem is outline and solved by discrete control theory. Thirdly, the paper makes suggestions how to translate the optimal control framework and results into a trade policy of the envisaged country. Finally, limitations are discussed and an outlook for broadening the concept for international concerns is offered.
Tipo: Presentation
Palavras-chave: Dynamic control; Expectations; Cyclical prices; Stabilization policy; Risk and Uncertainty; C54; C61; F61.
Ano: 2012
URL: http://purl.umn.edu/122467

Future Scenarios of the Food System: Insights from the Consumers’ Perspective
Provedor de dados: 31
Autores: Contini,   Caterina; Casini,   Leonardo; Fabbrizzi,   Sara; Travaglini,   Irene.
A careful analysis of contemporary society shows a radical evolution of the role and function of consumption. So-called post-modernity, along with the technological, economic and social transformations that have brought it on, inaugurate a different way of conducting relationships, of existing and of consuming. So consumptions evolve, assuming new expressions in extremely heterogeneous ambits, including that of food consumptions. The past decades have witnessed a progressive increase in the complexity of food consumptions due to the affirmation of increasingly more differentiated trends sensitive to territorial specificity and, at the same time, open to the globalisation of tastes. This topic represents a theme as interesting from the scientific viewpoint...
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Productivity Analysis.
Ano: 2011
URL: http://purl.umn.edu/122008

The Irrigation Economy of the Indo-Gangetic Basin: In the Throes of a Transition
Provedor de dados: 31
Autores: Shah,   Tushaar.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/124474

Feasibility Assessment of Biomass Harvesting Cooperative
Provedor de dados: 31
Autores: Basnet,   Arjun; Kenkel,   Philip L.
The paper summarizes the harvesting and transportation costs of biomass in an individual producer’s framework versus a cooperative framework using a feasibility template developed in MS Excel. The cost is compared between individual producer having 1000 acres of land and a cooperative with five members each having 1000 acres of land. The estimated total cost per ton for harvesting biomass and transporting it to a warehouse 20 mile far is $25.53 for individual producer and $18.00 for cooperative. The mowing, raking and baling cost per ton is estimated to be $5.71, $3.94 and $11.16 respectively for individual producer and $4.97, $2.00 and $5.85 respectively for cooperative.
Tipo: Presentation
Palavras-chave: Biomass; Switchgrass; Harvesting; Transportation; Cooperative; Agricultural and Food Policy; Financial Economics; Production Economics; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119781

An Update on Curriculum Reform:Case Study of CFANS Undergraduate Program Redesign 2011
Provedor de dados: 31
Autores: Nefstead,   Ward E.
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2012
URL: http://purl.umn.edu/123747

Improving Irrigated Agriculture: How Far Can We Go?
Provedor de dados: 31
Autores: Meyer,   Wayne S.
The last decade has seen the nexus between increasing world population and the area of irrigated land broken, indicating that further population will need to be fed by improved water productivity rather than through increased irrigated area. But how much improvement is possible? This paper systematically considers irrigated agriculture from the plant through to a catchment, and from production and natural resource use perspectives. While there is some evidence of improvement in transpiration productivity (yield per unit of transpired water) of our common irrigated crops, it seems we have reached the limit of potential improvement. Opportunity still exists to increase economic yield while containing seasonal water use through manipulation of vegetative and...
Tipo: Presentation
Palavras-chave: Crop Production/Industries; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/124468

What is it Consumers really want, and how can their preferences be influenced? The Case of fat in Milk
Provedor de dados: 31
Autores: Andersen,   Laura M.; Smed,   Sinne.
In this paper we investigate preferences for fat in milk through a structural characteristics model. The data includes information about daily purchases and social and demographic characteristics of more than 1,100 households. We find that consumers who prefer milk with a high fat content do not react to information about health effects, but can be influenced by prices, while consumers who prefer milk with a low share of fat are influenced by information, but are less price sensitive. Therefore, when attempting to decrease consumption of fat from milk, prices are more efficient than information.
Tipo: Presentation
Palavras-chave: Fat in milk; Characteristics model; Hedonic prices; Information; Panel data; Food Consumption/Nutrition/Food Safety; D12.
Ano: 2012
URL: http://purl.umn.edu/122728

An Analysis of the Technical Efficiency of Cotton Farmers in the Punjab province in Pakistan
Provedor de dados: 31
Autores: Hussain,   Muhammad Sajid; Coelli,   Tim J.; Simmons,   Phil.
In this paper we analyse the technical efficiency of cotton farmers in the Punjab Province in Pakistan. Technical efficiency is measured relative to a stochastic frontier production function (SFPF). The estimated model includes a function in which technical efficiency is made an explicit function of firm specific factors (involving the levels of education and experience of farmers and other factors). For the purpose of analysis, survey data was collected for the 1996-97 season. Analysis is done on a district basis and the mean technical efficiencies obtained are 76, 78, 77 and 83 per cent for the districts of Arifwala, Bahawalpur, Multan and Rahim Yar Khan respectively. This study suggests that there is considerable room for productivity gains for the...
Tipo: Presentation
Palavras-chave: Technical efficiency; Stochastic production frontier; And cotton farms.; Crop Production/Industries; Productivity Analysis.
Ano: 1999
URL: http://purl.umn.edu/123815

Impact on Western Australia’s sheep supply chain of the termination of live sheep exports
Provedor de dados: 31
Autores: Nath,   Tanmoy; Kingwell,   Ross S.; Cunningham,   Peter; Islam,   Nazrul; Xayavong,   Vilaphonh; Curtis,   Kimbal; Feldman,   David; Anderton,   Lucy; Mahindua,   Truphena.
Western Australia (WA) supplies around three-quarters of Australia’s exports of live sheep. The number of sheep exported live from WA has ranged from 4.5 million to 2.4 million with the trend in numbers exported being downwards. The future of this export trade appears to be increasingly vulnerable and uncertain, primarily because of the influence of animal welfare lobbyists. This paper uses scenario analysis to assess the impact on WA’s sheep supply chain of the termination of the live sheep export trade. The supply chain comprises three subsectors: farm production, processing/wholesale and retailing/export. The impacts of the trade termination on each of these sub-sectors are reported. These impacts are strongly linked to how producers respond to...
Tipo: Presentation
Palavras-chave: Live sheep export; Animal welfare; Regional economic impacts; Industry value chains; International Relations/Trade; Livestock Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124345

Risk Management in Agriculture: What Role for Governments?
Provedor de dados: 31
Autores: Anton,   Jesus.
Plenary presentation from 123rd EAAE Seminar, 23-24 February, Dublin, Ireland
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122774

EXPLAINING ECONOMIC INEFFICIENCY OF NEPALESE RICE FARMS: AN EMPIRICAL INVESTIGATION
Provedor de dados: 31
Autores: Dhungana,   Basanta R.; Nuthall,   Peter L.; Nartea,   Gilbert V.
Efficiency has been proven to be an important managerial tool in improving total factor productivity in agriculture. The four sources of economic inefficiency: allocative, technical, pure technical and scale inefficiency of a sample of seventy-six Nepalese rice farmers were examined using the data envelopment analysis (DEA) decomposition method. The inefficiency indices computed by the DEA were then used as the dependent variable in a Tobit (censored) regression model using decision- makers’ attributes as the explanatory variables. The results revealed relatively large inefficiencies among the farms sampled. The average economic, allocative, technical, pure technical and scale inefficiencies were 34%, 13%, 24%, 18%, and 7% respectively. There is also a...
Tipo: Presentation
Palavras-chave: Efficiency; Frontier; DEA; Rice farming; Tobit regression; Socioeconomic attributes; Risk attitude; Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123630

Using a decision theoretic approach to choose among alternative import protocols for an import competing commodity
Provedor de dados: 31
Autores: Abdalla,   Ali; Rodriguez,   Gil; Heaney,   Anna.
The global push toward free trade and the consequent rise in volume of imports from a wider range of countries incurs the likelihood of introducing unwanted pathogens. Given that a zero-risk quarantine policy is not possible, there are tradeoffs between the gains from international trade and the potential costs to society of disease incursions. The aim in this paper is to demonstrate a means for choosing among alternative import protocols through an economic model. The economic modeling approach applied to a stylised set of import protocols was a two step process. First, the gains and losses to consumers and producers, including costs of disease, were estimated for each import protocol. In the second step, three decision rules — minimax, minimin and...
Tipo: Presentation
Palavras-chave: Demand and Price Analysis; International Relations/Trade.
Ano: 1999
URL: http://purl.umn.edu/123752

Did the American Recovery and Reinvestment Act Increase in SNAP Benefits Reduce the Impact of Food Deserts?
Provedor de dados: 31
Autores: Andrews,   Margaret S.; Bhatta,   Rhea; Ver Ploeg,   Michele.
Public policy discussion of the problem of food deserts has concentrated on proximity to retail food stores providing nutritious, affordable foods. Because they offer a wide array of healthful products at lower prices, physical access to a supermarket or supercenter has come to be the standard of adequacy. Less attention has been given to how economic incentives influence access to retail food stores in the wider food environment. The American Recovery and Reinvestment Act (ARRA) enacted a sizable increase in SNAP benefits effective April 2009. Though the primary purpose of the increase was to stimulate the economy, we argue that it had a secondary effect of encouraging SNAP participants to redeem more of their benefits at larger, lower-priced retailers....
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123520

2nd Forum on Irrigation and water for sustainable development: 15 –16 December, 2008 Ghion Hotel, Addis Ababa, Ethiopia
Provedor de dados: 31
Autores: Awulachew,   Seleshi Bekele; Erkossa,   Teklu; Balcha,   Yodit.
Tipo: Presentation
Palavras-chave: Sustainable development; Irrigation management; Irrigation water; Irrigated farming; Irrigation systems; Supplemental irrigation; Land management; Land use; Investment; Case studies; Government policy; Rural poverty; Groundwater; Small scale systems; Socioeconomic development; Economic aspects; Economic growth; Income; Water management; Water resources development; Water harvesting; Water supply; Public policy; Agricultural production; Developing countries; Public-private cooperation; History; Case studies; River basins; Crop production; Agricultural and Food Policy; Agricultural Finance; Crop Production/Industries; Farm Management; Financial Economics; Food Security and Poverty; Institutional and Behavioral Economics; Land Economics/Use; Production Economics; Public Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/118411

Changing Agri-food Markets in the Caribbean: A Preliminary Investigation
Provedor de dados: 31
Autores: Iton,   Ardon.
Belize City, Belize 23rd - 27th July, 2007
Tipo: Presentation
Palavras-chave: Small farmers; Changing agri-food markets; Supermarkets; Agribusiness; Agricultural and Food Policy; Q13.
Ano: 2009
URL: http://purl.umn.edu/122893

Reducing the environmental footprint of pig finishing barns
Provedor de dados: 31
Autores: Jacobson,   Larry D.; Schmidt,   David R.; Lazarus,   William F.; Koehler,   Robert.
Written for presentation at the 2011 ASABE Annual International Meeting Sponsored by ASABE Gault House, Louisville, Kentucky August 7 – 10, 2011
Tipo: Presentation
Palavras-chave: Swine Housing; Energy; Emissions; Environmental Footprint; Economic Viability; Farm Management; Livestock Production/Industries.
Ano: 2011
URL: http://purl.umn.edu/122609

Industry Versus Government Control of Quality Standards in the South Australian Dried Fruit Industry
Provedor de dados: 31
Autores: Challen,   Ray; Cook,   Venton.
The dried fruits industry in South Australia is regulated under the Dried Fruits Act 1993 (SA). The principal effect of regulation is to impose a mandatory standards scheme on the processing and packaging of dried fruit produced in South Australia for sale in the Australian domestic market. The Act is currently under review in accordance with the requirements and principles of National Competition Policy. The economic analysis undertaken as part of the review addresses the question of who should be making decisions in respect of quality standards for dried fruit: individual industry participants, industry groups or the government. Economic theory of market failure, transactions costs and collective action suggests that the answer to such a question is an...
Tipo: Presentation
Palavras-chave: Agribusiness.
Ano: 2000
URL: http://purl.umn.edu/123620

Local, Organic, Conventional— Asymmetric Effects of Information and Taste on Label Preferences in an Experimental Auction
Provedor de dados: 31
Autores: Costanigro,   Marco; Kroll,   Stephan; Thilmany,   Dawn D.
We endowed consumers with conventional apples and auctioned local, organic and organic-local apples to elicit consumers’ valuation and the response to two experimental treatments: scientific information and taste. For both labels, which participants valued as partial substitutes, positive WTP is conditional on distrusting the governmental food agencies. Information documenting the inconclusive scientific evidence in favor of organic and local production has little effect; while participants with positive valuation reacted to organoleptic characteristics only when the new information favored the labeled apples. The observed behavior is more consistent with polarization against conventional products, rather than in favor of local and organic.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123199

PRESERVING WATER QUALITY IN AGRICULTURE: BIOBED ROTATION TO VERTICAL
Provedor de dados: 31
Autores: Boivin,   Pascal; Guine,   Veronique.
Up to 95% of the contamination of surface water by pesticides comes from on-farm point sources in connection with washing and preparation operations. This contamination is a growing concern for environment and human health. Because of their efficiency, their low cost and their friendly and simple use, Biobeds were recognized as the best tool to treat these pesticide effluents. Assuming a single passage of the effluent through the Biobed followed by release of the percolate, the research focused on the efficiency of the depuration after a single percolation. Accounting for unknown hazards such as metabolites and bound residues leads, however, local rules in Europe to enjoin a recycling of the effluent until full evaporation to prevent any release in the...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/120405

34th Annual Conference - Australian Agricultural Economics Society, University of Queensland, Brisbane, 12-15 February 1990
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1990
URL: http://purl.umn.edu/118926

The Impact of Debt Structure on the Production Efficiency of Broadcare Farms in Western Australia
Provedor de dados: 31
Autores: Mugera,   Amin W.
Farming activities are often financed using debt yet empirical studies that investigate the relationship between farm debt structure and performance are still rare. In a ten years unbalanced panel (1995-2005) of Western Australia broadacre farms, we relate the impact of long-term debt, short-term debt and tax liability on farm performance measured by input-oriented technical efficiency and return on assets (ROA). To check for the robustness of our results, both data envelopment analysis (DEA) and stochastic frontier analysis (SFA) methods are employed. Results from both models are consistent: farm production efficiency is positively related to shortterm debt, tax liability and investment and negative related to off-farm income activities. Longterm debt has...
Tipo: Presentation
Palavras-chave: Farm debt structure; Return on assets; Input-oriented technical efficiency; Broadacre farming; Western Australia.; Agricultural Finance; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/124342

Developing cross disciplinary skills through an undergraduate research project
Provedor de dados: 31
Autores: Mehlhorn,   Joey; Roberts,   Jason; Cain,   Amanda; Parrott,   Scott D.
Undergraduate students can benefit from a research experience with a faculty mentor.  Students perceived the research project and faculty mentorship as more beneficial than directed coursework.  Mentoring is key to enhancing undergraduate research experiences, but the impact on time should be considered.  Linkages between coursework and application should also be considered.
Tipo: Presentation
Palavras-chave: Student mentor; Undergraduate research; Teaching/Communication/Extension/Profession; Q1.
Ano: 2012
URL: http://purl.umn.edu/119556

The Effect of the El Nino Southern Oscillation on U.S. Corn Production and Downside Risk
Provedor de dados: 31
Autores: Tack,   Jesse B.; Ubilava,   David.
El Nino Southern Oscillation (ENSO) teleconnections imply anomalous weather conditions around the globe, causing yield shortages, price changes, and even civil unrests. Extreme ENSO events may cause catastrophic damages to crop yields, thus amplifying downside risk for producers. This study presents a framework for quantifying the effects of climate on crop yield distributions. An empirical application provides estimates of the effect that ENSO events have on the means of U.S. county-level corn yield distributions, as well as the probabilities of catastrophic crop loss. Our findings demonstrate that ENSO events strongly influence these probabilities systematically over large production regions, which has important implications for research and policy...
Tipo: Presentation
Palavras-chave: Climate; El Nino Southern Oscillation; Maximum Entropy; Risk Management; Yield Distribution; Crop Production/Industries; Environmental Economics and Policy; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/119785

Time to Eat? The Relationship Between Household Proxies of Time Resources and Food Spending Patterns.
Provedor de dados: 31
Autores: Llobrera,   Joseph.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123528

Total Lunchroom Makeovers: Using the Principle of Asymmetric Paternalism to Address New School Lunchroom Guidelines
Provedor de dados: 31
Autores: Hanks,   Andrew S.; Just,   David R.; Wansink,   Brian.
A key goal of the Healthy, Hungry-Free Kids Act of 2010 is to ensure that children have access to healthy foods in schools. While the new policy mandates that healthy items must be included on the lunch line—and even that children must take certain foods—there is concern both over whether children will choose to eat the healthier fare, and what the ultimate cost may be to schools that comply. We propose a series of behavioral nudges–the total lunchroom makeover–that may help lead children to make healthier choices at little cost the schools in accordance with the goals of the new legislation.. We report the results from a field experiment in which a series of nudges lead to significant increases in the consumption of fruits and vegetables—a substantive...
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123388

Profitability of Intensifying Cropping in the Mallee Region of Victoria
Provedor de dados: 31
Autores: O'Brian,   Kate.
A whole farm linear programming model, PRISM, was used to investigate the profitability of adopting a more intensive crop rotation in the central Mallee region of Victoria (annual rainfall 300-350mm). The model was optimised for farm profit with different amounts of working capital so that optimal proportions of a wheat-field peawheat- lupin rotation and a pasture-pasture-wheat rotation were included in the enterprise mix. Based on average yields from a 10 year rotation at the Mallee Research Station, Walpeup, increasing crop intensity from 33% of the farm to 77% of the farm increased annual profit by 38%. When the model was run again using typical input costs and average yields achieved in the region, intensification of cropping decreased annual profit by...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/124500

Spatial Preference Heterogeneity in Forest Recreation
Provedor de dados: 31
Autores: Abildtrup,   Jens; Garcia,   Serge; Olsen,   Soren Boye; Stenger,   Anne.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/120386

Potato Prices as Affected by Supply and Demand Factors: An Irish Case Study
Provedor de dados: 31
Autores: Thorne,   Fiona S.
The supply and demand factors affecting the farm level price for Irish potatoes has undergone considerable change in the last two decades. On the demand side, per capita consumption has decreased by almost a half, and the use of potatoes has shifted from consumption of table stock potatoes towards greater levels of processed potato products. On the supply side, domestic production levels of potatoes decreased by just over 30 percent, whilst grower numbers decreased by greater than 75 percent over the same period. Against this background of significant changes in domestic consumption levels and patterns and domestic production of potatoes this paper examines the effect of these factors on potato price levels and variability. Farm level price and volatility...
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122473

Evaluation of economic weights for selection and breeding in macadamia
Provedor de dados: 31
Autores: Coverdale,   Chris; Hardner,   Craig; Wegener,   Malcolm K.
The identification of economically sensitive traits is a critical step in the breeding process as it defines the direction of the breeding program. Quantifying how each trait affects the profitability of the production system further increases the efficiency of a breeding program. Production activities are ultimately aimed at maximising the level of consumer satisfaction with the product concerned which is, in turn, relfected by the profitability of the growing and processing stages of the production process. In that regard, breeding objectives need to be consistent with maximising the profitability of the farm production sector by producing genotypes with improved performance. By assigning economic weights to different traits, genotypes with differing...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123796

Determining the Barriers to Organic Certification: An Explanatory Analysis of Information
Provedor de dados: 31
Autores: Torres,   Ariana; Marshall,   Maria I.
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124432

Analysis of Commodity Program Adjustments for U.S. Rice in Stochastic Framework
Provedor de dados: 31
Autores: Chavez,   Eddie C.; Wailes,   Eric J.
Potential adjustments in U.S. commodity program for rice are evaluated in this paper using stochastic analysis in a global modeling framework. Corresponding threshold and loss-compensatory increases in target price and loan rates are determined with assumed outright and gradual elimination of direct payments. Results show that if direct payments (DP) are eliminated in 2012, a 23% increase in both the target price (TP) and loan rate (LR) triggers counter-cyclical payments (CCP) 80% of the time; and it will take an increase of 48% in TP and LR to generate CCP enough to compensate for the loss in total DP. If DP is gradually removed over 5 years, the trigger and compensatory increases in TP and LR are 41% and 46%, respectively. Furthermore, if DP is...
Tipo: Presentation
Palavras-chave: U.S. commodity program; Threshold and loss-compensatory increases; Stochastic analysis; Agricultural and Food Policy; Crop Production/Industries; Q18.
Ano: 2012
URL: http://purl.umn.edu/119772

Regenerating the Green Revolution
Provedor de dados: 31
Autores: Conway,   Gordon.
Tipo: Presentation
Palavras-chave: Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2002
URL: http://purl.umn.edu/123926

Did the Fischler reform increase market integration between the EU and world commodity markets?
Provedor de dados: 31
Autores: Mela,   Giulio.
This work assesses the extent to which h the Fischler reform of the CAP increased the elasticity of price transmission (EPT) between the world and the European agricultural commodity markets. Commodities considered are soft and durum wheat, corn, feed barley, and butter. Results show that the reform increased ETP for all commodities even though with different magnitude. Before reform implementation (January 2007), the ETP was almost zero (meaning market isolation) for soft wheat, feed barley, and butter, while it was relatively low (0.4) for corn and durum. After January 2007, the EPT increased to almost unity (perfect transmission) for soft wheat and barley, to 0.9 and 0.8 for durum and corn, and to 0.5 for butter, which had historically been amongst the...
Tipo: Presentation
Palavras-chave: Price transmission elasticity; Fischler reform; Structural breaks; Agricultural commmodity prices; International Relations/Trade; Q11; Q18; Q13; C22.
Ano: 2012
URL: http://purl.umn.edu/124107

Body Weight and Labour Market Outcomes in Post-Soviet Russia
Provedor de dados: 31
Autores: Huffman,   Sonya Kostova; Rizov,   Marian.
This paper estimates the impacts of weight, measured by body mass index (BMI), on employment, wages, and missed work due to illness for Russian adults by gender using recent panel data (1994-2005) from the nationally representative Russian Longitudinal Monitoring Survey (RLMS). We employ econometric techniques to control for unobserved heterogeneity and potential biases due to endogeneity in BMI. The results show an inverted U-shaped effect of BMI on probability of employment for men and women. We did not find evidence of wage penalty for higher BMI. In fact, the wages for overweigh men are higher. However, having a BMI above 28.3 increases the number of days missing work due to health problems for men. Overall, we find negative effects of obesity on...
Tipo: Presentation
Palavras-chave: BMI; Obesity; Labour market outcomes; Russia; Health Economics and Policy; Labor and Human Capital.
Ano: 2012
URL: http://purl.umn.edu/123539

Powering Development for the Poor in India?
Provedor de dados: 31
Autores: Adholeya,   Alok.
In India, the energy sector is going to play an important role in the inclusive and holistic growth of the economy and society. Biofuels, apart from improving the energy scenario, will also have a positive effect on poor communities in rural sectors. India currently imports 70% of its oil, and this figure is estimated to touch 90% by 2030. Since India has only 0.4% of world crude oil, alternatives need to be found. Agriculture in India accounts for 43% of the total geographic area. The total estimated energy requirement of the unelectrified rural sector is about 102.6 million gigajoules(Gj). The current program of bringing 0.4 million ha of marginal land under biodiesel production would amount to producing about 42.1 million Gj from biodiesel, which can...
Tipo: Presentation
Palavras-chave: International Development; Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/124494

An Economic Valuation of Pollination Services in Georgia
Provedor de dados: 31
Autores: Barfield,   Ashley; Bergstrom,   John C.; Ferreira,   Susana.
The production of many crops depends on biotic pollination. As pollinator populations decline, assessments of the potential consequential loss of economic value are critical. We estimate the economic value of pollination services ($608 million), crop vulnerability ratio (21 percent), and pollination’s contribution to agricultural production value (5 percent) for Georgia.
Tipo: Presentation
Palavras-chave: Pollination; Colony Collapse Disorder; Georgia; Bioeconomic; Value; Vulnerability; Ecosystem Services; Crops; Honeybees; Pollinators; Pollination Dependency; Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119780

Quarantine and Inspection Services
Provedor de dados: 31
Autores: Landos,   John.
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2001
URL: http://purl.umn.edu/124452

Optimal control of a stochastic biological invasion
Provedor de dados: 31
Autores: Chalak,   Morteza; Pannell,   David J.
Although there have been numerous studies on the economics of weed control, relatively few of these studies have focused on natural ecosystems. The aims of this papers are: A) to identify the combination of control options that is optimal for blackberry (Rubus anglocandicans) in Australian natural ecosystems, B) to assess whether an integrated control strategy is superior to chemical-only strategies, C) to evaluate the economic net benefits of specific biologically oriented control methods (a rust and grazing by goats), D) to determine how changes in model parameters affect the optimal control strategy. To address these aims, a stochastic dynamic simulation model and a stochastic dynamic programming model are developed. The results indicate that, while an...
Tipo: Presentation
Palavras-chave: Environment; Economics; Weed; Stochastic; Optimisation; Management; Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124373

Welfare Benefits: the changing face of the Queensland beef industry.
Provedor de dados: 31
Autores: Rolfe,   John; Donaghy,   Peter.
Australian agriculture has suffered from a long-term decline in its terms of trade and a persistent cost-price squeeze. The effects on farm viability have led to declining and aging rural populations, rising rural unemployment, and substantial agricultural restructuring. To cushion these effects and assist in rural restructuring Australian State and Federal Governments have provided support to primary producers including drought aid, reconstruction aid and other support mechanisms. In Queensland the principle agency responsible for providing this support is the Queensland Rural Adjustment Authority (QRAA). This paper will examine the recent pattern of support QRAA has provided the Queensland beef industry and comment on its effectiveness and flow-on effects.
Tipo: Presentation
Palavras-chave: Welfare; Restructuring; Beef industry; Agribusiness; Livestock Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123631

The Impact of Historical and Regional Networks on Trade Volumes within the Western Hemisphere:  A Gravity Analysis across Sectors
Provedor de dados: 31
Autores: Sandberg,   H. Mikael; Seale,   James L., Jr.
This paper identifies and analyzes the effects of existing trade networks on bilateral trade volumes in the Western Hemisphere by applying the gravity model of international trade to two data-sets, one encompassing bilateral trade volumes of agricultural products and one encompassing bilateral trade volumes of manufactured goods.
Tipo: Presentation
Palavras-chave: International trade; Gravity models; History; Regional trade agreements.; International Relations/Trade; F1 (International trade); F15 (Economic integration); F54 (Post-colonialism); F55 (International institutional arrangements).
Ano: 2012
URL: http://purl.umn.edu/120071

ACIAR ECONOMIC IMPACT MODEL FOR USE IN PROJECT DEVELOPMENT (EX-ANTE) AND COMPLETED PROJECT (OR EX-POST) EVALUATIONS: A USER’S MANUAL
Provedor de dados: 31
Autores: Lubulwa,   Godfrey; McMeniman,   Susan.
This paper discusses the Australian Centre for International Agricultural Research (ACIAR) Economic Impact Model which can be used in ex-ante and ex-post evaluations of projects. The model is a traded good model which estimates changes in producer and consumer surplus as a result of a supply or demand shift. It is written in Microsoft® Excel 97 and uses Visual Basic macros. The model is part of the Impact Assessment Program’s long term aim of developing systematic user-friendly approaches for the evaluation of agricultural research projects. It includes modules to allow the user with the required data to estimate cost savings for each one of the following situations: • Supply shift for an annual crop • Supply shift for a perennial crop • Supply shift for...
Tipo: Presentation
Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 1999
URL: http://purl.umn.edu/123832

Determinants of Fertiliser Use by Smallholder Maize Farmers in the Chinyanja Triangle in Malawi, Mozambique and Zambia
Provedor de dados: 31
Autores: Mapila,   Mariam A.T.J.; Njuki,   Jemimah M.; Delve,   Robert J.; Zingore,   Shamie; Matibini,   Josephine.
Farm surveys in Malawi, Zambia and Mozambique were carried out to assess the determinants of fertiliser use given continued low yields, low organic matter and general poor soil health in Southern African soils. Regression modelling showed that fertiliser use was influenced by household and farm characteristics. In addition, it was also influenced by social and human capital and farmers’ perceptions of the effect of fertilisers on soil fertility. Farmers who perceived fertilisers as bad for their soil were less likely to adopt their use.  This is a key result, as the emerging discussions on a green revolution for Africa, as well as the continued food crisis discussion, are prompting increased fertiliser use as an immediate intervention for increasing...
Tipo: Presentation
Palavras-chave: African green revolution; Farmer perceptions; Fertiliser subsidies; Fertiliser use; Human capital; Social capital; Agricultural and Food Policy; Community/Rural/Urban Development.
Ano: 2012
URL: http://purl.umn.edu/123354

Grain Research Funding in Australia: Lessons from International Experience
Provedor de dados: 31
Autores: Gray,   Richard S.; Bolek,   Katarzyna.
The Australian grain research system has undergone a profound transformation over the past 25 years. This began with the creation of Grains Research Development Corporation, which gave producers a voice within a national research system. In the second phase of development, the GRDC tendered for the development of three for profit public corporations (AGT, HRZ and InterGrain) that would invest revenues from endpoint royalties (EPRs) to fund wheat breeding. This new funding for breeding allowed the GRDC to move upstream to focus on pre-breeding research efforts. As of 2012, these breeding firms had each acquired a multinational private partner and had collectively reached the point where end point royalties were sufficient to cover breeding costs. While this...
Tipo: Presentation
Palavras-chave: Toll goods; R&amp;D funding models; Research levies; Seed pricing; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/124176

Economic and Biological Perspectives on Off-site Effects Associated with Soil Acidification
Provedor de dados: 31
Autores: Mullen,   John D.; Helyar,   K.R.; Pagan,   Phil.
There is likely to be a divergence in the interests of farmers and their neighbours or the community in the management of land and hence a greater rate of exploitation of soil qualities than that desired by the community. This is particularly true under current institutional arrangements with respect to nonpoint forms of land degradation, such as soil acidification, where the property rights of the community are weak. Hence it is important to understand the nature and extent of off-site impacts so as to form a basis either for potential collective action or for some form of intervention by government. One of the objectives of this paper is to draw out the analogies between offsite effects of a spatial nature with those of a dynamic or temporal nature with...
Tipo: Presentation
Palavras-chave: Farm Management; Land Economics/Use.
Ano: 2000
URL: http://purl.umn.edu/123709

The Dynamics of the Innovation System for Functional Foods in South Brazil
Provedor de dados: 31
Autores: de Barcellos,   Marcia Dutra; Pozzo,   Daniele; Ferreira,   Gabriela Cardozo; Lionello,   Rafael Laitano.
This study aims at identifying the dynamics of the innovation system for functional foods (FF) in Rio Grande do Sul, Brazil. Functional food is any healthy food claimed to have a health-promoting or disease-preventing property beyond the basic function of supplying nutrients. Health has been named as the most significant trend and innovation driver in the global food and drinks market. Brazil is one of the leading countries in food production and consumption, and the market for functional foods have been growing 10% per year, three times more than the market for conventional foods. Although this food category is considered mature in some developed markets (such as in Japan, in the Nordic countries and in the U.S), it is still unknown for many consumers,...
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; International Relations/Trade; Productivity Analysis.
Ano: 2011
URL: http://purl.umn.edu/122032

Willingness to Pay for Imported Beef and Perceived Risk
Provedor de dados: 31
Autores: Lim,   Kar Ho; Hu,   Wuyang; Maynard,   Leigh J.; Goddard,   Ellen W.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123977

How far do shocks move across borders? Examining volatility transmission in major agricultural futures markets
Provedor de dados: 31
Autores: Hernandez,   Manuel A.; Ibarra,   Raul; Trupkin,   Danilo R.
This paper examines the dynamics of volatility across major global exchanges for corn, wheat, and soybeans in the United States, Europe, and Asia. We follow a multivariate GARCH approach and account for the potential bias that may arise when considering exchanges with different closing times. The results indicate that agricultural markets are highly interrelated and there are both own- and cross-volatility spillovers and dependence among most of the exchanges. Chicago particularly plays a major role in terms of spillover effects over other markets. Additionally, the level of interdependence between exchanges has only increased in recent years for some commodities.
Tipo: Presentation
Palavras-chave: Volatility transmission; Agricultural commodities; Futures markets; Multivariate GARCH; Risk and Uncertainty; Q11; G15; C32.
Ano: 2012
URL: http://purl.umn.edu/122511

Dynamic and static behaviour with respect to energy use and investment of Dutch Greenhouse firms
Provedor de dados: 31
Autores: Verreth,   Daphne M.I.; Emvalomatis,   Grigorios; Bunte,   Frank H.J.; Oude Lansink,   Alfons G.J.M.
Dutch greenhouse horticultural firms are energy-intensive and major emitters of greenhouse gases. This paper develops a theoretically consistent model that is able to describe the greenhouse firms` behaviour regarding energy use and investments in energy technology. The behaviour of the firm is modelled using a combination of a dynamic cost function and a static profit function framework. This paper derives the optimal quantity of energy and energy capital from the link between these two functions. The model is applied to a panel of 97 Dutch greenhouse firms over the period 2001-2008. The results show that most Dutch greenhouse firms shift from being net electricity users to net electricity producers in the long run. Investing in energy capital contribute...
Tipo: Presentation
Palavras-chave: Greenhouse horticulture; Energy; Dynamic duality; Short-run marginal cost; Adjustment costs; Production Economics; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/123508

ECONOMIC ISSUES RELATING TO WEED MANAGEMENT IN NATURAL ECOSYSTEMS: THE CASE OF SCOTCH BROOM ON BARRINGTON TOPS, NSW
Provedor de dados: 31
Autores: Odom,   Doreen I.S.; Griffith,   Garry R.; Sinden,   Jack A.
The area of the imported weed Scotch Broom (Cytisus scoparius) is steadily expanding and eliminating natural ecosystems and their habitats of rare and endangered species in Barrington Tops National Park. A research project, funded by the CRC for Weeds Management Systems, has commenced to provide economic information to assist the management of this problem. To provide a focus for the project, the economic issues surrounding the broom problem are explored in this paper. The general economic characteristics of weeds in natural ecosystems are discussed first, and include externalities and public goods. The economic issues in weed management are addressed next, and include the problems of government management, choice of control measure, and sources of...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123712

Payment For Forest Environmental Services: A Metta-analysis of Successful Elements
Provedor de dados: 31
Autores: Rizio,   Dina; Gios,   Geremia.
The forest is an ecosystem that can produce environmental services from which individuals benefit. In recent decades, the interest in these services has significantly increased and changed to meet new needs. The demand for wood has gradually become integrated into the demand for new products and services related to landscape use and recreational activities. These new products and services are defined as Non-Wood Forest Products and Services (NWFP&amp;SSs). With this interest in services and products associated with the recreational use of forests and forest tourism, a possibility and in certain cases a need exists to introduce a system of payment for these services. The purpose of such a payment system is to respond to this demand and to promote the...
Tipo: Presentation
Palavras-chave: Payment for environmentall services; Forest resources; Non-wood forest product ts and services; Landscape; Tourism.; Resource /Energy Economics and Policy; Q26; Q23.
Ano: 2012
URL: http://purl.umn.edu/124114

DAMS: THE DILEMMA
Provedor de dados: 31
Autores: Blackmore,   Don J.
Tipo: Presentation
Palavras-chave: Land Economics/Use.
Ano: 2000
URL: http://purl.umn.edu/123871

The “Made in USA poultry label” and consumer choice in Ghana
Provedor de dados: 31
Autores: Egyir,   Irene Susana; Adu-Nyako,   Kofi; Okafor,   Ralph.
Market survey data from Ghana was used to gain understanding of consumers’ attitudes, preferences for foreign food products, and the role product country of origin plays in the demand for poultry. Intention to purchase poultry from the US was anchored on product packaging, quality, expiry date and country of origin.
Tipo: Presentation
Palavras-chave: Country of origin; Consumer preference; Poultry demand; Ghana; US exports.; Agribusiness; Industrial Organization; Marketing; Q13; Q17.
Ano: 2012
URL: http://purl.umn.edu/119745

The adoption of innovative cropping systems under price and production risks: a dynamic model of crop rotation choice
Provedor de dados: 31
Autores: Ridier,   Aude; Chaib,   Karim; Roussy,   Caroline.
In the paper we investigate the role played by both production and market risks on farmer’s decision to adopt long rotations (over 2 years), considered as innovative cropping systems. We build a multiperiod dynamic farm model (run under GAMS) that arbitrates each year between traditional and innovative rotations. With discrete stochastic programming, the production risk is accounted as an intra-year risk; yearly farming operations are declined according to a decision tree where probabilities are assigned. Subjective yield and cost distributions linked to this decision tree are elicited among a sample of 13 farmers that are experiencing this innovation in South-western France. The price risk is randomly distributed with a given market trend. The crop...
Tipo: Presentation
Palavras-chave: Innovative cropping systems; Dynamic model; Crop rotation decision; Risk; Subjective probabilities; Risk and Uncertainty; C61; D0; Q12; Q55.
Ano: 2012
URL: http://purl.umn.edu/122440

Desempenho Social no Agronegócio Brasileiro: aplicando DEA no segmento de usinas de processamento de cana de açúcar
Provedor de dados: 31
Autores: Macedo,   Marcelo Alvaro da Silva; Cipola,   Fabricio Carvalho; Ferreira,   Francisco Ritter.
A importância das questões sócio-ambientais nas empresas advém da  crescente demanda, por parte da sociedade, de informações a respeito dos impactos que as atividades empresariais exercem sobre os trabalhadores, a comunidade e o meio ambiente. Ou seja, a sociedade passa a cobrar das empresas uma consciência social corporativa, que representa o nível de compromisso com a busca de soluções para os problemas sócio-ambientais existentes. A partir daí as empresas começaram a ter que provar que o seu custo-benefício é positivo, porque agrega valor à economia e à sociedade, porque respeita os direitos humanos de seus colaboradores e, ainda, porque desenvolve todo o seu processo operacional sem agredir o meio ambiente. É neste contexto que se insere este trabalho,...
Tipo: Presentation
Palavras-chave: Desempenho Sócio-ambiental; Agronegócio; DEA; Social and Environmental Performance; Agribusiness; Agribusiness; Environmental Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/118705

ASSESSING THE ON-FARM IMPACTS OF GROUNDWATER REALLOCATION POLICIES IN THE NAMOI VALLEY
Provedor de dados: 31
Autores: Carter,   A.; Crean,   Jason; Young,   R.T.
NSW is in the process of implementing major reforms to the management of water resources. One of the key components of these reforms is that “Groundwater management policies should employ the principles of ecologically sustainable development and should be directed at achieving sustainable use of the resource”. The implications of this recommendation vary significantly across NSW according to the level of irrigation development and the environmental conditions of aquifers. The Namoi Valley is one region where groundwater has been identified as suffering from both over allocation and over use. Without change, groundwater dependant ecosystems, irrigators and other users face further declines in groundwater quality and quantity with potential aquifer...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123617

Multimedia Mapping and GIS Integration for Data Acquisition and Sustainable Resource Management in Extension
Provedor de dados: 31
Autores: Joseph,   Edwin.
Belize City, Belize 23rd - 27th July, 2007
Tipo: Presentation
Palavras-chave: GIS; GPS; Multimedia technologies; Extension; Agribusiness; Q16.
Ano: 2009
URL: http://purl.umn.edu/122909

Individual and context factors determine gender-specific behaviour: the case of school milk in Germany
Provedor de dados: 31
Autores: Salamon,   Petra; Weible,   Daniela; Buergelt,   Doreen; Christoph,   Inken B.; Peter,   Guenter.
A German federal research was established to analyse determinants on school milk demand. Among those, individual factors, like children’s eating habits, attitudes, preferences and socio-economic variables were considered but also contextual factors like attitudes and habits of class teachers and school variables were regarded; and more, price effects on demand were derived via a price experiment. As girls order significantly less school milk than boys this paper aims to analysis gender-specific decisions. In the analysis, a database is used in which individual order information are merged with survey results concerning pupils, parents, class teachers, school principals and school milk managers of the sampled schools. A multilevel analysis is applied,...
Tipo: Presentation
Palavras-chave: Gender differences; Multilevel analysis; School milk; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123532

The differentiated effects of food price spikes on poverty in Uganda
Provedor de dados: 31
Autores: Boysen,   Ole; Matthews,   Alan.
This paper applies an integrated CGE-microsimulation model to analyse the impact of the 2006-08 increase in commodity prices on Uganda. Previous impact analysis studies suggested that the food price shock increased poverty in Uganda as there are more net food buyer than net food seller households. We show that the agriculture commodity price shocks were poverty-reducing, but the simultaneous increases in energy and fertiliser prices were poverty-increasing. Overall, poverty decreased in Uganda as a result of external price shocks in the 2006-08 period.
Tipo: Presentation
Palavras-chave: Food price shock; Uganda; Microsimulation; Poverty; International Development; Risk and Uncertainty; O55; Q18.
Ano: 2012
URL: http://purl.umn.edu/122445

Maintaining Access to Modern Science to Serve the Poor: A Case Study with Rice
Provedor de dados: 31
Autores: Fischer,   Ken S.
Modern biology is generating revolutionary advances in genetic knowledge and our capacity to change the genetic make up of crops and livestock. Much of this new science is proprietary, owned both by the private sector and increasingly by advanced public sector researchers, leading to a concern by many, and expressed by Serageldin (past chair of the CGIAR): that the progressive monopolization of knowledge – and the increasing marginalization of most of the world’s population – is skewing the new science to the benefits of the rich and excluding the poor. The poor of the world deserve the best that science has to offer. Consequently, national and international public sectors in the developing world will have to play a key role, in accessing proprietary tools...
Tipo: Presentation
Palavras-chave: Crop Production/Industries; Food Security and Poverty; Research and Development/Tech Change/Emerging Technologies.
Ano: 2002
URL: http://purl.umn.edu/123936

Towards a Sustainable Medicinal Plant Industry in Trinidad and Tobago
Provedor de dados: 31
Autores: Badrie,   Neela; Baksh-Comeau,   Yasmin.
Belize City, Belize 23rd - 27th July, 2007
Tipo: Presentation
Palavras-chave: Medicinal plants; ‘bush medicine’; Agricultural diversification; Regulation; Herbal remedies; Herbal therapy; Agribusiness; Q13.
Ano: 2009
URL: http://purl.umn.edu/122894

Assessing U.S. Household Purchase Dynamics for Dietary Fiber
Provedor de dados: 31
Autores: Henry-Osorio,   Miguel; Dong,   Diansheng.
This study updates existing literature on consumer/household demand for fiber by examining household purchase dynamics for dietary fiber. It uses a dynamic Tobit model that allows past purchase occasions to affect current purchase decisions for fiber in a framework that captures simultaneously state dependence, unobserved households heterogeneity preferences, and serial correlation caused by a stationary first-order choice process. The model controls for the unobserved heterogeneity by adopting a Gaussian random effects specification. It also captures variations in prices over time and controls for left-censoring. The dynamic model is estimated using the Geweke-Hajivasssiliou-Keane recursive probability simulator and a unique dataset that contains detailed...
Tipo: Presentation
Palavras-chave: Temporal dependence; Household choice dynamics; Habits; GHK recursive simulator; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; D10; Q11; C23; C61.
Ano: 2012
URL: http://purl.umn.edu/123954

THE SENSITIVITY OF WINE INDUSTRY OUTCOMES TO MODEL ASSUMPTIONS IN GST SCENARIOS
Provedor de dados: 31
Autores: Wittwer,   Glyn.
This study provides an example of applying an AGE model to consider the effects on the wine industry of broader tax reform. The sensitivity of results is considered with respect to the choice of base year for static analysis and an alteration to the long-run capital assumption. Systematic sensitivity analysis is used to evaluate the extent to which expenditure and export demand elasticities determine industry-specific outcomes. The analysis is extended to evaluate the impacts of policy uncertainty.
Tipo: Presentation
Palavras-chave: Agribusiness.
Ano: 2000
URL: http://purl.umn.edu/123742

A Viable Biofuels Industry in Australia?
Provedor de dados: 31
Autores: Wright,   John.
Transport fuels in Australia are overwhelmingly based on petroleum products; petrol, diesel and LPG are the primary fuels. The concept of ‘peak oil’ is now within the arena of public debate with the realisation that this will result in rapidly increasing oil, and therefore transport fuel, prices. When this is coupled with instability in areas of the world that contain most relatively easily extractable oil reserves, and hence supply security issues, at least two drivers for the exploration of alternative transport fuel supplies are clear. One alternative to supply at least the part of Australia’s future transport fuels is the range of biofuels that can be made from agricultural products such as sugar, wheat and oilseeds. There are, however, a myriad of...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/124496

Family Business Decision-Making: Factors and Influences on Choosing a Successor
Provedor de dados: 31
Autores: Foltz,   Renee D.; Marshall,   Maria I.
This paper investigates the factors that lead a family business to name a successor for the business, as the succession process often begins with naming a successor. We further separate family businesses into farm and non-farm businesses to compare and contrast the results. The factors used in the probit regression are clustered into three groups: business factors, family factors, and individual factors. Identifying the barriers that family businesses face when naming a successor will help Extension and other small and family business consulting agencies and organizations to formulate a guide to assist families when working through this process.
Tipo: Presentation
Palavras-chave: Family business; Small farms; Succession; Agribusiness; Consumer/Household Economics; Farm Management.
Ano: 2012
URL: http://purl.umn.edu/124272

Valuing Remnant Vegetation Using Choice Modelling: An Application to the Desert Uplands of Central Queensland.
Provedor de dados: 31
Autores: Blamey,   Russell K.; Rolfe,   John; Bennett,   Jeffrey W.; Morrison,   Mark.
The Desert Uplands is a biogeographic region in central-western Queensland that lies within the rangelands area of Australia. In the region, many pastoralists are clearing the scrub and woodland vegetation in order to improve production for cattle grazing. Only limited production gains are possible because of the low rainfall and infertile soils relative to many other areas of Queensland. To assess whether such developments are economic and desirable, a first step is to value the environmental implications of alternate management regimes. A stated preference choice modelling study was undertaken to provide estimates of these values. Attributes included in the choice model pertain to reductions in the population size of nonthreatened species, the number of...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Livestock Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123772

An Experimental Investigation of Hard and Soft Price Ceilings in Emissions Permit Markets
Provedor de dados: 31
Autores: Perkis,   David F.; Cason,   Timothy N.; Tyner,   Wallace E.
Tradable emissions permits have been implemented to control pollution levels in various markets around the world and represent a major component of legislative efforts to control greenhouse gas (GHG) emissions in the United States.  Because permits are supplied for a fixed level of pollution, allowing the market for permits to determine the price, there is a desire for price control mechanisms which would protect firms otherwise susceptible to price spikes caused by fluctuations in the demand for pollution abatement.  We test permit markets in an experimental laboratory setting to determine the effectiveness of several price control mechanisms.  Evidence suggests that both permit supply adjustments and traditional price ceilings (hard ceilings) effectively...
Tipo: Presentation
Palavras-chave: Tradable Emissions Permit Market; Price Controls; Hard Ceiling; Soft Ceiling; Experimental Economics; Environmental Economics and Policy; Institutional and Behavioral Economics; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124096

The Universality of Microfinance Operations Model in Eastern Europe and Central Asia: Financial Sustainability vs. Poverty Outreach
Provedor de dados: 31
Autores: Sheremenko,   Ganna; Escalante,   Cesar L.; Florkowski,   Wojciech J.
This paper examines delinquency, profitability, and outreach determinants of microfinance institutions’ (MFIs) performance in Russia, the Caucasus, and Central Asia. The estimation is done using the Seemingly Unrelated Regression (SUR) technique. The estimation results suggest that the regions'  MFIs are profit-driven but are expected to improve outreach in the long-run.
Tipo: Presentation
Palavras-chave: Microfinance institution; SUR; Financial sustainability; Delinquency; Profitability; Social outreach; Agricultural Finance; Financial Economics; International Development; G20; G21.
Ano: 2012
URL: http://purl.umn.edu/123286

Modelling Farm Households in a Spatial Context: Vietnamese Agriculture
Provedor de dados: 31
Autores: MacAulay,   T. Gordon; Hertzler,   Greg.
In this paper a model is developed which brings together elements of the household models, spatial trading systems and demand systems with elements of production and income risk. Some of the implications of the design are analysed. The design is focussed on the problem faced by Vietnamese farm households as they face land use policy changes which will allow for the possibility of land consolidation, reduced input subsidies and increased market risk.
Tipo: Presentation
Palavras-chave: Consumer/Household Economics; Farm Management.
Ano: 2000
URL: http://purl.umn.edu/123701

Land reform, household specialisation and rural development in China
Provedor de dados: 31
Autores: Brown,   Colin G.; Kai,   Chen.
Recent land reforms in China have sought to address fundamental problems with the Household Production Responsibility System such as land fragmentation. Primarily the reforms have targeted land productivity and grain output. However, the reforms have had a much broader effect on rural development as they have allowed a degree of household specialisation in non-grain activities both on and off the farm. Based on information collected from household surveys and fieldwork in Shandong and other provinces, this paper reports on some of the impacts of land reform on productivity, household specialisation and rural development.
Tipo: Presentation
Palavras-chave: Community/Rural/Urban Development; Land Economics/Use.
Ano: 1999
URL: http://purl.umn.edu/123790

Consumer Response to Package Downsizing: An Application to the Chicago Ice Cream Market
Provedor de dados: 31
Autores: Cakir,   Metin; Balagtas,   Joseph Valdes.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123980

Irrigation against rural poverty: an overview of issues and pro-poor intervention strategies in irrigated agriculture in Asia; Proceedings of National Workshops on Pro-Poor Intervention Strategies in Irrigated Agriculture in Asia, Bangladesh, China, India, Indonesia, Pakistan and Vietnam [9-10 August 2001, Colombo, Sri Lanka]
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Irrigation management; Water resources; Poverty; Sustainability; Rural development; Irrigated farming; Performance evaluation; Case studies; Large scale systems; Surface irrigation; Water use efficiency; Water scarcity; Water policy; Productivity; Farm Management; Food Security and Poverty; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2001
URL: http://purl.umn.edu/118406

Testing for Framing Effects in Environmental Choice Modelling
Provedor de dados: 31
Autores: Rolfe,   John; Bennett,   Jeffrey W.
Researchers using stated preference environmental valuation techniques are interested in identifying the extent to which framing effects impact on value estimates. Framing effects occur when the context in which the hypothetical scenarios and tradeoffs put to respondents in an application differ from those that would be important if actual transactions were involved. Because scenarios have to be defined succinctly to respondents, the challenge for researchers is to identify how the particular ‘frame’ used affects responses, and how different groups of respondents may view settings. In this paper, an application of a stated preference technique termed Choice Modelling is reported in the context of pastoral land development in Queensland and the Northern...
Tipo: Presentation
Palavras-chave: Framing; Environmental valuation; Choice Modelling; Environmental Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123727

The role of gender and ethnicity in household decision-making: Evidence from rural Nepal
Provedor de dados: 31
Autores: Devkota,   Durga; Rauniyar,   Ganesh P.; Parker,   W.J.
Gender disparity in household decision-making is a common phenomenon in developing countries. It is influenced by ethnicity, culture and geographical location. Household decision-making processes were examined in rural Nepal with a primary focus on gender roles in the context of three distinct ethnic communities (Brahmin/Chhetri, Gurung and Tharu) in the Chitwan district. A combination of participatory rural appraisal (n=6), gender analysis (n=6), key informant interviews (n=14) and a household socio-economic survey (n=123) were used to collect data. At the household level men and women were interviewed separately. The involvement of women in economic activities was quite high but differed substantially between the ethnic groups and by type of household...
Tipo: Presentation
Palavras-chave: Household decision-making; Gender roles; Ethnicity; Gender analysis; Participatory rural appraisal; Nepal; Rural areas.; Consumer/Household Economics.
Ano: 1999
URL: http://purl.umn.edu/123801

Does More Cooking Mean Better Eating? Estimating the relationship between time spent in food preparation and diet quality
Provedor de dados: 31
Autores: Mancino,   Lisa; Gregory,   Christian A.
In this study, we use a unique dataset designed by researchers at the University of Chicago and collected by Mathematica Policy Research to investigate whether there is a significant correlation between diet quality and time spent preparing food. Overall, our results indicate that, when controlling for unobserved factors that may affect both preparation time and diet quality, time spent in food preparation influences diet quality only for obese persons. However, the improvements in diet quality are minimal. Our results also indicate that foods eaten away from home play an important role in understanding the effects of time spent in food preparation on food away from home.
Tipo: Presentation
Palavras-chave: Determinants of diet quality; Time use; Nutrition; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/124025

DEMAND ESTIMATION IN THE PRESENCE OF AN UNOBSERVABLE PRODUCT ATTRIBUTE: THE CASE OF MINT QUALITY
Provedor de dados: 31
Autores: Toro-Gonzalez,   Daniel; Yan,   Jia; Gallardo,   Rosa Karina; McCluskey,   Jill J.
This article estimates the demand for mint-flavored gum products using grocery store sales data and accounting for consumers’ valuation of quality.  Unobserved product attributes, such as flavor quality, are important elements to consider when estimating the demand for gum.  The estimation results suggest that gum is an inelastic product.  A positive relationship between willingness to pay and unobserved quality was identified, implying that gum industry should be able to command a premium for higher quality mint flavored products.
Tipo: Presentation
Palavras-chave: Quality Differentiation; Unobserved Product Attributes; Demand Estimation; Gum; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Industrial Organization.
Ano: 2012
URL: http://purl.umn.edu/123518

Alliance Performances in the Dutch Biotechnology Sector
Provedor de dados: 31
Autores: Garbade,   Philipp J.P.; Fortuin,   Frances T.J.M.; Omta,   S.W.F. (Onno).
In the biotechnology sector small R&amp;D intensive firms play a fundamental role to keep innovation rates high. With less bureaucratic burdens, low level of hierarchy and high internal flexibility they are able to move fast and to make most efficient use of unique competences. Still their shortage in resources, related to company size, makes them dependent on a strong network of alliances to get access to missing competences and materials. This paper aims at establishing the influence of alliance characteristics on the innovation performance of firms in the biotechnology sector. It presents a conceptual model to clarify the special role of collaboration intensity and how human resource exchange is related to innovation performance of biotechnology...
Tipo: Presentation
Palavras-chave: Collaboration intensity; Human resources exchange; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; International Relations/Trade.
Ano: 2011
URL: http://purl.umn.edu/121999

REALOCANDO OS FRIGORIFICOS NO ESTADO DO MATO GROSSO
Provedor de dados: 31
Autores: Brunetti,   Lucas; Dos Reis,   Janderson Damaceno.
A programação linear de modelos de transporte nesse artigo é usada para considerar conjuntamente os custos de transporte dos insumos e dos mercadorias finais. O problema concerne na localização ótima dos frigoríficos bovinos no estado do Mato Grosso dada as localizações, o número e a capacidade dos frigoríficos, quantidade de animais para o abate e a demanda final por carne. Um processo de inferência é usado para obter os fretes, o processo é desenvolvido de modo a construir dois cenários. O primeiro é baseado em fretes de baixo custo para grandes distâncias, o segundo em fretes de alto custo para grandes distâncias. Para o primeiro cenário os frigoríficos ficaram localizados em 17 regiões com grandes diferenças de escala entre eles, sendo que as novas...
Tipo: Presentation
Palavras-chave: Frigorificos; Localizacao otima; Custos de transporte; Slaughtering plans; Optimal location; Transport cost; Agribusiness; Livestock Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/119149

Volatile world market prices for dairy products - how do they affect domestic price formation: The German cheese market
Provedor de dados: 31
Autores: Weber,   Sascha A.; Salamon,   Petra; Hansen,   Heiko.
Since the stepwise reduction of intervention prices combined with watered down conditions and suspended export refunds, respectively, the EU dairy industry faces new challenges regarding wild price fluctuations originally caused in third countries. In the past, the EU domestic market was insulated as far as possible from world markets. However, today global prices could affect prices even at the level of consumers, but more directly at the level milk producers. Volatility noticeable increased with the price peak in 2007, followed by the drop in 2008, and a new price boost in 2010. Additionally, reduced security in marketing of butter and skimmed milk powder led to higher processing share of cheese which is not only exported but also increasingly consumed...
Tipo: Presentation
Palavras-chave: Price transmission; Cointegration; Granger-causality; Dairy; Risk and Uncertainty; C1; E3; E6; F3; Q1.
Ano: 2012
URL: http://purl.umn.edu/122542

IS A PUBLIC REGULATION OF FOOD PRICE VOLATILITY FEASIBLE IN AFRICA? AN ARCH APPROACH IN KENYA
Provedor de dados: 31
Autores: Maitre d'Hotel,   Elodie; le Cotty,   Tristan; Jayne,   Thomas S.
The 2007-2008 food crisis and current food price swings led economists to re-evaluate the potential for policy instruments to manage food price volatility. Many developing countries recently pursued price regulation policies, but the difficulties of these policies in promoting price stability is not fully understood. In particular, the ability of a stabilization policy to lower food price volatility does not depend on the nature of the policy instrument only, but also on the institutional conditions of its implementation. Kenya is a particularly interesting case as it is characterized by a rather long tradition of public intervention, and by the persistence of highly volatile prices. The consistency of the policy use appears to be key factor influencing...
Tipo: Presentation
Palavras-chave: Volatility; Predictability; Consistency; Food; Policy; Kenya; Food Security and Poverty; International Development; Risk and Uncertainty; D84; Q13; Q18.
Ano: 2012
URL: http://purl.umn.edu/122551

An Analysis of Food Safety Events on Consumers’ Confidence and Consumers Attitude towards Preparedness of U.S. Food System
Provedor de dados: 31
Autores: Hill,   Jessica I.; Bharad,   Abhishek Bhagwat; Harrison,   R. Wes; Kinsey,   Jean D.; Degeneffe,   Dennis J.
Every year hundreds of food recalls are made due to contamination. The main focus of this paper is to examine the effects of specific food events on consumers’ confidence in food safety as well as their preparedness regarding the United States food system. The food events studied in this are major food-borne illnesses outbreaks and recalls that have occurred since May 2008. The three events chosen included: the salmonella outbreak in jalapeno and Serrano peppers occurring in 2008, the salmonella outbreak in peanut butter occurring in 2009, and the E.coli outbreak in Nestle cookie dough occurring in 2009. An ordered probit model was used to measure the effects that these specific foodborne illnesses had on consumers’ confidence. The results revealed that...
Tipo: Presentation
Palavras-chave: Food safety; Food system; Food recalls; Ordered probit; Consumer confidence; Consumer attitudes; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty.
Ano: 2011
URL: http://purl.umn.edu/123174

The Application of Count Regression Models to Improve an Extension Program
Provedor de dados: 31
Autores: Kriesel,   Warren.
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2012
URL: http://purl.umn.edu/124482

Price volatility and accuracy of price risk measurement depending on methods and data aggregation: The case of wheat prices in the EU countries
Provedor de dados: 31
Autores: Figiel,   Szczepan; Hamulczuk,   Mariusz; Klimkowski,   Cezary.
In this paper we use weekly milling wheat price series for nine selected EU countries to evaluate levels and components of volatility in the period from July 2004 to April 2011 and to examine how sensitive the results can be to spatial aggregation of the price data. The prices were analyzed in levels and logarithmic rate of returns. To asses price risk, apart from basic measures of price variability, the price series were decomposed using multiplicative model in order to determine shares of seasonal and random components in the total variance of the prices. We also applied ARMAX model to separate the stochastic components of the price series to properly evaluate real price risk exposure and tested for ARCH and GARCH effects. We found considerable...
Tipo: Presentation
Palavras-chave: Wheat prices; Volatility; Price risk; Data aggregation; Risk and Uncertainty; C22.
Ano: 2012
URL: http://purl.umn.edu/122549

The Impact of Shale Exploration on Housing Values in Pennsylvania
Provedor de dados: 31
Autores: Klaiber,   H. Allen; Gopalakrishnan,   Sathya.
Horizontal drilling and hydraulic fracturing processes to extract shale gas have raised concerns among local residents over the safety of these new drilling techniques.  To assess whether potential negative externalities associated with shale gas exploration are capitalized into surrounding homeowners property values, we estimate a hedonic model combining data on 3,464 housing sales occurring between 2008 and 2010 in a suburban/rural county south of Pittsburgh, PA which experienced large numbers of new horizontal Marcellus wells beginning in late 2008. Using hedonic methods, we find a negative and significant impact to households in close proximity both spatially and temporally to this activity.  Further we find that this negative impact disproportionately...
Tipo: Presentation
Palavras-chave: Shale gas; Housing values; Risk perceptions; Hedonic; Environmental Economics and Policy; Land Economics/Use; Resource /Energy Economics and Policy; Q51; Q52; R21.
Ano: 2012
URL: http://purl.umn.edu/124368

National Conferencs on Water, Food Security and Climate Change in Sri Lanka, Volume 3; Proceeding of the Policies, Institutions and Data Needs for Water Management, BMICH, Colomba June 9-11, 2009
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Water resource management; Water governance; Organizations; Institutions; Water policy; Water rights; Irrigation management; Participatory management; Farmers organizations; Capacity building; Irrigation efficiency; Water demand; Water supply; Irrigation schemes; Operations; Maintenance; Groundwater management; Models; Economic analysis; Food security; Farm Management; Financial Economics; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Industrial Organization; Institutional and Behavioral Economics; Political Economy; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2010
URL: http://purl.umn.edu/118415

The relationship between energy consumption, energy prices and economic growth: Time series evidence from Asian developing countries
Provedor de dados: 31
Autores: Asafu-Adjaye,   John.
This paper estimates the causal relationships between energy consumption and income for India, Indonesia, the Philippines and Thailand, using cointegration and error-correction modelling techniques. The results indicate that, in the short-run, unidirectional Granger causality runs from energy to income for India and Indonesia, while bidirectional Granger causality runs from energy to income for Thailand and the Philippines. In the case of Thailand and the Philippines, energy, income and prices are mutually causal. The study results do not support the view that energy and income are neutral with respect to each other, with the exception of Indonesia where neutrality is observed in the short-run.
Tipo: Presentation
Palavras-chave: Energy consumption; Economic growth; Granger causality; Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123754

Fiducial cost-benefit analysis research: with an application to weather modification
Provedor de dados: 31
Autores: Beare,   Stephen; Chambers,   Raymond.
Environmental intervention is often seen as being high risk and high return. Traditional scientific hypothesis testing provides limited guidance to policy makers unless there is a high level of certainty in the supporting scientific evidence. Traditional cost-benefit analysis under uncertainty has shortcomings when considering high-risk investment, largely due to the choice of how to discount uncertainty outcomes. A corollary is that traditional cost-benefit analysis does not place a value on increased certainty, an important outcome of successful scientific research. A fiducial costbenefit methodology is presented in this paper, which integrates hypothesis testing and traditional cost-benefit analysis. The fiducial approach is one way of objectively...
Tipo: Presentation
Palavras-chave: Cost-benefit; Risk; Uncertainty; Cost-benefit; Fiducial inference; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/124232

What Are the Consequences of United States Government Slaughter Policies on Horse Prices?
Provedor de dados: 31
Autores: Vestal,   Mallory K.; Lusk,   Jayson L.; Cooper,   Steven R.; Ward,   Clement E.
As a result of several judicial rulings, the processing of horses for human consumption came to a halt in 2007. This article determines the impact horse prices suffered as a result of the elimination of horse processing facilities. A quantile regression approach is applied and is useful, as horses of varying quality were impacted differently. The authors acknowledge that the slaughter ban occurred alongside the U.S. economic downturn and attempts to account for the recession to adequately asses the policy effect.
Tipo: Presentation
Palavras-chave: Horse processing; Slaughter; Quantile regression; Price; Agricultural and Food Policy.
Ano: 2012
URL: http://purl.umn.edu/119766

Rethinking the role of the agriculture sector in the economic development of Barbados "Some emerging challenges"
Provedor de dados: 31
Autores: Hippolyte,   Rommell.
Bridgetown, Barbados 6th – 10th July, 2009
Tipo: Presentation
Palavras-chave: Barbados; Agriculture; Economic development; Challenges; Rising prices; High imports; Agriculture policies; Agribusiness; Agricultural and Food Policy; Q18.
Ano: 2010
URL: http://purl.umn.edu/122665

Introduction of New Technologies in Agriculture: A Study of the Challenges in the Adoption of Hybrid Rice in India
Provedor de dados: 31
Autores: Khandker,   Varsha; Gandhi,   Vasant P.
Rice is India’s number one foodgrain and is crucial to its food security. Raising its production with increasing demand and escalating commodity prices is a major challenge. The promising hybrid rice technology, despite its success in neighboring China and Bangladesh, has faced serious difficulties in India. The study examines the complexities in the introduction and adoption behavior of hybrid rice. It develops a conceptual framework to understand the adoption which includes technological, economic, behavioral, market and policy factors. The research uses secondary data, interviews, and primary farmer sample surveys to explore and test the conceptual model. Preliminary specific findings on the processes, determinants and challenges in the adoption of...
Tipo: Presentation
Palavras-chave: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/124325

European Agricultural Policy – where is it going?
Provedor de dados: 31
Autores: Buckwell,   Allan.
To understand where European Agricultural Policy might be going for the first decade of the 21st Century, it is necessary to understand its origins and present state. The history of the Twentieth Century in Europe could be summarised, crudely, as a game of two halves; war followed by the European Union. The history of European agricultural policy in the 20th Century could, equally crudely, be characterised as protection (1880s – 1930), followed by more protection (1930 – 1968), then common protection (1968 – 1992), and currently, slowly declining protection (1992 ). The European Community’s Common Agricultural policy was a necessary accompaniment to a common market , and it was bound to be protectionist given its antecedents in the six founder member...
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy; International Relations/Trade.
Ano: 1999
URL: http://purl.umn.edu/123791

A PRODUÇÃO E COMERCIALIZAÇÃO DA CARNE DE AVESTRUZ PELA COOPERATIVA CPARS E A PERCEPÇÃO DO CONSUMIDOR
Provedor de dados: 31
Autores: Ceolin,   Alessandra Carla; Pereira,   Paulo Rodrigo; Correa,   Augusto Faria; Abicht,   Alexandre Melo.
Este estudo foi realizado nas propriedades rurais de estrutiocultores da região metropolitana de Porto Alegre, na cooperativa CPARS e com os clientes de uma churrascaria da cidade, com o objetivo de verificar se a carne de avestruz seria bem aceita pelo consumidor e como esse percebe as semelhanças e diferenças dessa carne, além de fornecer subsídios para as estratégias de comercialização da cooperativa. Para execução deste artigo foi realizada uma visita de campo, entrevistas aos produtores rurais e a um gestor da cooperativa, a fim de entender como está sendo a comercialização e divulgação da carne de avestruz. Após, foram realizadas entrevistas, através de questionários a diversos clientes da churrascaria para verificar a percepção do consumidor quanto...
Tipo: Presentation
Palavras-chave: Percepção do Consumidor; Marketing; Estrutiocultura; Cooperativismo; Consumer Perception; Marketing; Ostrich Breeders; Co-operativism; Livestock Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/118715

Growth and Prosperity: Still the Best Ways of Reducing Poverty
Provedor de dados: 31
Autores: Cutbertson,   Sandy.
Tipo: Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2001
URL: http://purl.umn.edu/124436

Television Advertising and Soda Demand
Provedor de dados: 31
Autores: Lopez,   Rigoberto A.; Liu,   Yizao; Zhu,   Chen.
This study examines the effects of television advertising on consumer demand for carbonated soft drinks using a random coefficients logit model (BLP) with household and advertising data from seven U.S. cities over a three year period. We find that advertising decreases the price elasticity of demand, indicating that advertising plays predominantly a persuasive, therefore anti-competitive role in this market. Further results show that brand spillover effects are significant and that measuring advertising with gross rating points (GRPs) outperforms measuring it with expenditures, as is conventionally done. Finally, simulation results indicate that eliminating all television advertising would lower market shares of sodas as consumers migrate to other...
Tipo: Presentation
Palavras-chave: Advertising; Demand; Competition; Consumer behavior; Sodas; Carbonated soft drinks; Demand and Price Analysis; Industrial Organization; Marketing; D12; L66; Q18; I18.
Ano: 2012
URL: http://purl.umn.edu/124445

Fiscal and Farm Level Consequences of “Shallow Loss” Commodity Support
Provedor de dados: 31
Autores: Cooper,   Joseph C.; Delbecq,   Benoit A.; Davis,   Christopher G.
As with the 2008 Farm Act, the 2012 Farm Act is likely to have some sort of revenue-based support for producers of qualifying crops. Much debate over the negotiations on the 2012 Farm Act focuses on new programs for providing producers with support payments covering “shallow losses” in revenue. The main goal of this paper is to develop an approach to examine the sensitivity of the farmer’s downside risk protection and federal budgetary costs of marginal changes in the deductible in shallow loss program scenarios based on the Average Risk Coverage (ARC) program in the Senate’s April 26th draft of the 2012 Farm Bill. We find that average payments are elastic with respect to the revenue program’s coverage rate. In addition, using this approach, the paper...
Tipo: Presentation
Palavras-chave: Agricultural Finance; Public Economics.
Ano: 2012
URL: http://purl.umn.edu/124199

The Cost of Red Dawn to the NSW Economy
Provedor de dados: 31
Autores: Tozer,   Peter R.
On September 23, 2009 much of New South Wales awoke to a strange phenomenon, a huge cloud of red dust, “Red Dawn” the name given by the media to the event. This dust was sourced from the far west and northwest of the state and the Lake Eyre basin, and was lifted by a concurrence of weather events including strong frontal winds, that brought the effects of the dry winter of 2009 in central Australia to the city of Sydney and north-eastern New South Wales. Dust density caused disruptions to transport networks, and to commercial and domestic activities. These activities and disruptions imposed costs to the economy of the state and, based on data from primary and secondary sources and information from previous research in Australia and overseas, an estimate...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124458

Weather index drought insurance: an ex ante evaluation for millet growers in Niger
Provedor de dados: 31
Autores: Leblois,   Antoine; Quirion,   Philippe; Alhassane,   Agali; Traore,   Seydou.
In the Sudano-Sahelian region, which includes South Niger, the inter-annual variability of the rainy season is high and irrigation is scarce. As a consequence, bad rainy seasons have a massive impact on crop yield and regularly entail food crises. Traditional insurances based on crop damage assessment are not available because of asymmetric information and high transaction costs compared to the value of production. We assess the risk mitigation capacity of an alternative form of insurance which has been implemented in India since 2003: insurance based on a weather index. We compare the capacity of various weather indices to increase utility of a representative risk-averse farmer. We show the importance of using plot-level yield data rather than village...
Tipo: Presentation
Palavras-chave: Agriculture; Index-based insurance.; Crop Production/Industries; Risk and Uncertainty; G21; O12; Q12; Q18; Q54.
Ano: 2011
URL: http://purl.umn.edu/120378

Key Challenges and Solutions in Successful Commercial Ventures in Asia
Provedor de dados: 31
Autores: Davis,   Brent.
Tipo: Presentation
Palavras-chave: Agribusiness.
Ano: 2001
URL: http://purl.umn.edu/124449

An Examination of the Volatile Nature of Grass Production in Ireland
Provedor de dados: 31
Autores: O'Connor,   Declan; Hennessy,   Deirdre; Shalloo,   Laurence; Hurtado-Uria,   Cristina.
Grass production provides Irish dairy farmers with a competitive advantage over many of their mainland European counterparts by providing a cheap feed source. The temperate climate in Ireland favours the production of  grass, however production is highly seasonal with little growth over the winter period. This seasonal pattern of grass production in turn has resulted in predominantly spring calving dairy herds and has limited the development of the dairy product portfolio in Ireland which has created a reliance on dairy commodities. As Ireland exports approximately 80% of its dairy output, recent substantial increases in market price volatility has resulted in increased price volatility at farm level. The increased price volatility at market and farm level...
Tipo: Presentation
Palavras-chave: Grass Production; Volatility; Risk Management; Risk Management Tools; Farm Management; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122452

When Food Makes Fuel: The Promises and Challenges of Biofuels
Provedor de dados: 31
Autores: von Braun,   Joachim.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/124488

Consumer’s thoughts about and willingness to pay for traffic-light labeled food and financial products
Provedor de dados: 31
Autores: Drescher,   Larissa S.; Stephan,   Marette; Roosen,   Jutta.
Paper removed at the request of the primary author, October 2013.  Please contact them for further information.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123200

Effects of volatile output prices on agricultural land-use change
Provedor de dados: 31
Autores: Boere,   Esther; Peerlings,   Jack H.M.; Reinhard,   Stijn; Kuhlman,   Tom; Heijman,   Wim J.M.
Volatile output prices lead to a fluctuating shadow price (profitability) of agricultural land, and therefore may impact land use decisions in case of risk-averse behaviour. In this paper we assess the effect of volatile agricultural output prices on agricultural land-use change over the past decade in the Netherlands. Using regional data from 2000 through 2009, the number of hectares of land for 10 land uses was calculated. To determine the joint distribution of agricultural activities, hectares of land for each land use were converted to land share equations. Land share equations were estimated to determine the contribution of increased price volatility to land use change. Results show that larger volatility affects land shares negatively. Producer’s...
Tipo: Presentation
Palavras-chave: Land-use; Risk; Price volatility; Risk and Uncertainty; Q1; D8.
Ano: 2012
URL: http://purl.umn.edu/122472

Water use efficiency and maximizing profitability of grain sorghum  production in the Texas Panhandle
Provedor de dados: 31
Autores: Ahamadou,   Aly; Dembele,   Mamadou; Almas,   Lal K.; Brooks,   Kathleen R.
The reduction in the availability of irrigation water and the increase in pumping costs resulting from the decline in the Ogallala Aquifer make good management decisions more critical for the survival of the farm firm and the success of the agricultural sector in the Texas Panhandle. Response functions for irrigation and percentage potential evapotranspiration (PET) in the production of grain sorghum are estimated.  The response functions are transferred into value product functions and combined with an irrigation energy cost function to determine the profit maximizing irrigation strategy. Three management decision variables; total water available, the level of irrigation and the water to meet crop ET requirements are evaluated. Grain sorghum yield,...
Tipo: Presentation
Palavras-chave: Grain sorghum; ET; Maximizing profit; Irrigation efficiency; Input use optimization; Water conservation; Ogallala Aquifer; Texas Panhandle.; Farm Management; Production Economics; Productivity Analysis; Resource /Energy Economics and Policy; Q12; Q15; Q25; Q32; And Q34.
Ano: 2012
URL: http://purl.umn.edu/119801

Economic Issues in Assessing Research Priorities in Feed Grains Nutrition
Provedor de dados: 31
Autores: Brennan,   John P.; Singh,   Rajinder Pal; Singh,   Inder Pal.
Researchers have abundant technical opportunities to select various options for improvement of nutritional characteristics of feed grains. Choosing between those opportunities is a difficult issue for research funding organisations. In this paper, an attempt to address those research resource allocation issues is reported. The approach to use in analysing improvements in the feed quality of grains is discussed. By defining the problem as a cost reduction for the livestock industries, the impact of improvements in grain nutrition can be defined by their impact on the least-cost feed rations for different livestock categories. Using that approach, the benefits of improved feeds can be evaluated, and research priorities can be determined on the basis of which...
Tipo: Presentation
Palavras-chave: Feed grain; Nutrition; Value; Research; Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123789

Supply Chain Competences: The Case of the Traditional Food Sector in the EU
Provedor de dados: 31
Autores: Molnar,   Adrienn; Kuehne,   Bianca; Sebok,   Andras; Gellynck,   Xavier.
Since over the last twenty years the reduction of trade barriers, the increasing liberalisation, the advancement in ICT have determined a growth in the horizontal and vertical competition among firms in the chain. Therefore, today more than ever they are pressured to develop appropriate strategies in order to become more competitive (Montgomery and Porter, 1993; Grant, 1996; Porter, 1996). However, firms nowadays no longer compete as independent entities, but as chains (Fearne, 1998; Van der Vorst et al., 1998; Sahay, 2003; Green and Inman, 2005; Green et al., 2006; Hult et al., 2007; Ketchen and Hult, 2007; Sezen, 2008) and consequently, the dynamic and mutually dependent character of relations in these chains cause a challenge for these firms towards the...
Tipo: Presentation
Palavras-chave: Supply chain; Food sector; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty.
Ano: 2011
URL: http://purl.umn.edu/121998

Food Certification Schemes as Private Institutions of Sustainability
Provedor de dados: 31
Autores: Mondelaers,   Koen; Lauwers,   Ludwig H.; Van Huylenbroeck,   Guido.
institutions of sustainability (PIoS), which are sets of rules that a series of private actors voluntary follow to reach a sustainability target. Within PIoS, a strong position on sustainability themes is used as a mean to maximize private utility. Consequently, there is a potential win-win situation for both the private actors and the society. Typical for these multistakeholder PIoS is their hybrid configuration. Ménard (2004) introduced the concept of hybrids as an intermediate between pure anonymous spot markets and firms as hierarchies. It is a governance structure where actors have transferred part of their autonomous property rights to others, in order to allow for some coordination between partners. One of the main examples of PIoS in the food...
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety.
Ano: 2011
URL: http://purl.umn.edu/121993

Achieving fat score targets: the costs and benefits
Provedor de dados: 31
Autores: Graham,   Phillip; Hatcher,   Sue.
The national Lifetime Wool project has quantified the production benefits that accrue to a breeding flock of Merino ewes from actively managing their fat score at critical stages of the reproductive cycle. The GrassGro™ model was used to simulate the profitability of achieving three fat score targets (i.e. FS2.5, FS3-4% lambing and FS3-10% lambing) for a predominately grazing region (Yass) of NSW and a sheep/cereal region (Parkes). In both regions the FS3-10% flock had the highest gross margin but was also the riskiest option in terms of the variation in gross margin during the simulation period. In all cases the key driver of gross margin was the amount (and therefore cost) of supplement required to meet the fat score targets which highlights the...
Tipo: Presentation
Palavras-chave: Merino ewes; Fat score targets; Gross margin; Farm Management.
Ano: 2006
URL: http://purl.umn.edu/122520

Reformulation for healthier food: a qualitative assessment of alternative approaches
Provedor de dados: 31
Autores: Traill,   W. Bruce; Bech-Larsen,   Tino; Gennaro,   Laura; Koziol‐Kozakowska,   Agnieszka; Kuhn,   Sofia; Wills,   Jo.
Many prepared and take‐away foods contain high levels of ‘unhealthy’ nutrients such as salt, trans and saturated fats and sugar. As diets have developed to include higher proportions of these products, consumers intakes have grown beyond World Health Organisation recommended maximum levels. Countries have responded by regulatory action (Denmark’s banning of trans fats) or collaborative (voluntary) measures with industry. This paper presents findings from case study research in Denmark, the UK, Italy and Poland and at the EU level to address the research questions: Have reformulation actions been effective and cost‐effective? Is collaborative action between government and industry more likely to be effective than industry acting alone? Are there...
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123511

Measurement of Crop Genetic Diversity in Economic Analysis
Provedor de dados: 31
Autores: Meng,   Erika C.H.; Smale,   Melinda; Ruifa,   Hu; Brennan,   John P.; Godden,   David P.
In recent years, output on genetic diversity in the economic literature has included conceptual pieces on the definition and measurement of crop genetic diversity, methodologies for estimating its value, and efforts to analyze its contribution to productivity and stability. However, because biological diversity refers in general to a broad area of scientific inquiry, the growing quantity of literature has also generated some confusion over the definition, measurement, and interpretation of genetic diversity in the context of economic analysis. This paper addresses some of the measurement issues encountered in incorporating genetic diversity into economic analysis by presenting a synthesis of several of the relevant concepts and tools. Using data collected...
Tipo: Presentation
Palavras-chave: Genetic/diversity/wheat/variety/measurement; Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/124089

Does Contract Enforcement Limit the Distribution of Bargaining Power? An Experimental Study
Provedor de dados: 31
Autores: Salas,   Paula Cordero.
Tipo: Presentation
Palavras-chave: Financial Economics; Public Economics.
Ano: 2012
URL: http://purl.umn.edu/124503

Breaking Trends and the Prebisch-Singer Hypothesis: A Further Investigation
Provedor de dados: 31
Autores: Ghoshray,   Atanu; Kejriwal,   Mohitosh; Wohar,   Mark E.
This paper examines the Prebisch-Singer Hypothesis employing new time se- ries procedures that are robust to the nature of persistence in the commodity price shocks, thereby obviating the need for unit root pretesting. Speci…cally, the proce- dures allow consistent estimation of the number of structural breaks in the trend function as well as facilitate the distinction between trend breaks and pure level shifts. In comparison with past studies, we …nd fewer cases of commodities that display negative trends thereby weakening the case for the Prebisch-Singer Hypoth- esis. Finally, a new set of powerful unit root tests allowing for structural breaks under both the null and alternative hypotheses is applied to determine whether the underlying commodity price...
Tipo: Presentation
Palavras-chave: Primary commodity prices; Structural breaks; Trend functions; Prebisch- Singer Hypothesis; Unit roots; Demand and Price Analysis; Marketing; Research Methods/ Statistical Methods; 013; C22.
Ano: 2011
URL: http://purl.umn.edu/120387

The Global Policy Environment for Biofuels
Provedor de dados: 31
Autores: Taylor,   Michael J.; Robertson,   Debra F.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/124497

Tracing the Poverty Impact of Market Reforms in Bangladesh
Provedor de dados: 31
Autores: Alam,   Mohammad Jahangir; Bhuiyan,   Nazmul; Begum,   Ismat Ara; Van Huylenbroeck,   Guido.
The paper analyse the impact of market reforms on poverty in Bangladesh. To estimate the poverty impact at household level, a binary logit model has been estimated with two latest waves of  household income and expenditure data from Bangladesh. The results show that a significant improvement has been made in reducing poverty in the recent decades. As a net importing country, liberalization might has direct impact on household’s real income through the changes of real rice prices. The results also show that net rice buyer households are poorer than net rice sellers. So, decreased rice prices in domestic markets induced by liberalization have benefited the net rice buyers in Bangladesh, hence poverty declines.
Tipo: Presentation
Palavras-chave: Market reforms; Poverty; Bangladesh; Agricultural and Food Policy; Food Security and Poverty; International Development; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/123758

Methodological and empirical progress and challenges in integrated assessment of agricultural systems and policies
Provedor de dados: 31
Autores: van Ittersum,   Martin K.; Heckelei,   Thomas; Oude Lansink,   Alfons G.J.M.; Wolf,   Joost; Kanellopoulos,   Argyris; Britz,   Wolfgang.
In this contribution we first present a methodology for integrated assessment of agricultural systems (SEAMLESS Integrated Framework), illustrate its application in an integrated assessment of high commodity prices and then discuss its flexibility and limitations. From there we take a broader view and reflect on key scientific and empirical questions with respect to the development of research tools for the integrated assessment of agricultural systems.
Tipo: Presentation
Palavras-chave: Agricultural systems; Integrated assessment; Modelling; Agricultural and Food Policy; Farm Management.
Ano: 2011
URL: http://purl.umn.edu/119329

The Role Of Rural Women In Labor And Decision Making For Buffalo Enterprise In Egyptian Agriculture
Provedor de dados: 31
Autores: Soliman,   Ibrahim.
This article investigated the rural woman share in labor use her role and in decision-making. of the expenditure pattern of the income generated from the milk activity from Egyptian buffaloes on the conventional Egyptian farm. The analysis dealt with answering the following questions: Who receives this income? What are the channels through which this income is spent (Consumption versus investment and saving)? The study focused upon the share of the farmer’s wife, the farmer himself, both together, other adult women members and other adult men members of the household. The study relied upon cross section seasonal data generated from a purposive sample survey conducted in three villages of Governorates (Sharkia and Gharbia) in Egyptian Nile Delta, in the...
Tipo: Presentation
Palavras-chave: Density of family labor used; Opportunity Cost of Labor; Opportunity Cost of Rural Women's labor; Expenditure Pattern of Farm income; Role of Women Spending the Generated Income; Community/Rural/Urban Development; Consumer/Household Economics; Farm Management; Food Security and Poverty; Livestock Production/Industries.
Ano: 2004
URL: http://purl.umn.edu/208994

Supply Chain Response to Institutional Markets’ Demand for Healthy and Sustainable Food Options
Provedor de dados: 31
Autores: Abate-Kassa,   Getachew.
Institutional food buyers in the U.S. are increasingly demanding food products that are safe, traceable, healthier, local/regional, or sustainably produced and supplied. These markets consist of schools, universities, hospitals, charities, correction facilities, clubs and other similar organizations that buy goods and services to meet demands of their end-customers (students, patients, prisoners, etc.). These institutions comprise a large portion of the U.S. population. In 2008, the total number of children and adults enrolled in schools throughout the country - from nursery school to college - was estimated at 75.5 million (i.e., 18.7 million in colleges and 56.8 million in schools). This amounts to more than one-fourth of the U.S. population age three...
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; International Relations/Trade; Marketing; Production Economics.
Ano: 2011
URL: http://purl.umn.edu/122018

Coordination and Strategic Behaviour in Landscape Auctions
Provedor de dados: 31
Autores: Valle,   Haydn; Capon,   Timothy; Harris,   Michael; Reeson,   Andrew.
Designing a conservation auction where bidders know the ecological value of their land poses challenges for policy makers because bidders will tend to increase their asking price. This is known as strategic behaviour, and it is particularly prevalent in sequential auction settings. The tender process ceases to be competitive when strategic behaviour occurs, eroding the efficiency advantages of an auction. To overcome this problem, contract options can be designed such that early winners are restricted in their efforts to strategically manipulate auction outcomes. Simply offering multi-period contracts could achieve this goal if participants need to wait for their contracts to expire before they can change their asking price. This idea was tested in a...
Tipo: Presentation
Palavras-chave: Conservation; Biodiversity; Auctions; Strategic Behaviour; Landscape Design; Coordination; Institutional and Behavioral Economics.
Ano: 2012
URL: http://purl.umn.edu/124466

ECONOMICS OF PRODUCTIVE TRAITS OF SOME EGG-LAYER STRAINS UNDER EGYPTIAN CONDITIONS
Provedor de dados: 31
Autores: Soliman,   Ibrahim; Marai,   I. Fayez M.
University College of North Wales, Bangor, Gwynedd LL57 2UW Wales, Inited Kingdom
Tipo: Presentation
Palavras-chave: Average Cost Curve; Profitabilityu; Mortality Rate; Eggs Yield per Hen Housed Per Month; Feed Consumption; Farm Management; Livestock Production/Industries; Production Economics; Productivity Analysis; Research Methods/ Statistical Methods.
Ano: 1986
URL: http://purl.umn.edu/119682

Individual social capital and access to formal credit in Thailand
Provedor de dados: 31
Autores: Dufhues,   Thomas; Buchenrieder,   Gertrud; Munkung,   Nuchanata.
This study shows how different forms of individual social capital affect  access to formal credit in rural Thailand. In the context of agriculture economics, an  innovative data collection approach is used that originates from the field of sociology  (personal network survey). We measure social capital according to: 1. the tie strength  between the respondent and the personal network member (bonding/bridging); and 2. the  social distance between the respondent and the personal network member (linking).  Strong ties (bonding) in combination with access to socially distant network members  (linking) reduce the chances of being access-constrained.
Tipo: Presentation
Palavras-chave: Thailand; Access to credit; Social capital; Personal networks; Agricultural Finance; Research Methods/ Statistical Methods.
Ano: 2012
URL: http://purl.umn.edu/123401

Proceedings of the 28th West Indies Agricultural Economics Conference
Provedor de dados: 31
Autores: Abebe,   Asheber; Yin,   Shuxin.
Bridgetown, Barbados 6th – 10th July, 2009
Tipo: Presentation
Palavras-chave: Transvariation; Projection Pursuit; Misclassification Error Rate; Food Detention.; Agribusiness; Agricultural and Food Policy; C38.
Ano: 2010
URL: http://purl.umn.edu/122664

The Collective Household Enterprise Model: An Empirical Analysis
Provedor de dados: 31
Autores: Menon,   Martina; Perali,   Carlo Federico.
This paper estimates a household model where both the production and consumption sides are observed. The household activities produce both marketable and nonmarketable products. Family members consume market goods, domestically produced goods and leisure. This household equilibrium model is described within a collective framework. The data are from a nation-wide sample of Italian farm-households. The estimation is implemented using a generalized Heckman estimator to account for corner solutions generated by the fact that not all households are engaged in all enterpreneurial activities and do not consume some of all goods and leisure. The identification of the sharing rule stems from the assignability of clothing consumption and leisure.
Tipo: Presentation
Palavras-chave: Household collective model; Household and domestic productions; Consumption and leisure; Separability; Consumer/Household Economics.
Ano: 2011
URL: http://purl.umn.edu/120379

The impact of Australian ethanol policy on agriculture: examining limiting factors
Provedor de dados: 31
Autores: Cuevas-Cubria,   Clara.
Government subsidies have fuelled proposals for new ethanol projects that plan to use Australian grains as their feedstock. Additional ethanol production will intensify competition for grain in the Australian market, particularly during drought periods. This is likely to affect Australia’s largest grain user, the livestock industry. Past empirical work has found that expansions to ethanol production will cause grain prices to increase, as a result of restrictions on grain imports. However, this study finds two factors that could moderate such increases in the price of grain: the reliance of ethanol producers on low cost feedstock to remain economically viable, and the possibility of using imported cassava instead of domestically produced grains for ethanol...
Tipo: Presentation
Palavras-chave: Crop Production/Industries; Demand and Price Analysis; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124280

New institutional arrangements and standard adoption: Evidence from small-scale fruit and vegetable farmers in Thailand
Provedor de dados: 31
Autores: Sarah,   Kersting; Meike,   Wollni.
This paper presents an analysis of GlobalGAP adoption by small-scale fruit and vegetable farmers in Thailand focusing on GlobalGAP group certification, the costs and perceived benefits of GlobalGAP adoption, and the factors influencing standard adoption. GlobalGAP is the most important private standard for producers in the Thai horticultural sector concerning access to high-value markets, especially to Europe. We find that support by donors, exporters and public-private partnerships is vital to enable small-scale farmers to adopt the standard. GlobalGAP group certification encourages the formation of new institutional arrangements between farmers, exporters and donors. In our sample only participants from a development program were successful in adopting...
Tipo: Presentation
Palavras-chave: Private standards; Food safety; GlobalGAP adoption; New institutional arrangements; Small-scale farmers; Agricultural and Food Policy; Community/Rural/Urban Development; Farm Management; International Development; Marketing.
Ano: 2012
URL: http://purl.umn.edu/123537

Spatial Replicator Dynamics as a Model of Agricultural Technology Adoption
Provedor de dados: 31
Autores: Beard,   Rodney; Purcell,   Tim.
Many explanations of agricultural technology adoption have either been based loosely on diffusion concepts and have ignored economic factors or have been static economic models that ignore dynamic and spatial aspects of adoption. In this paper we propose a model of adoption which incorporates economic factors in a spatial and dynamic framework. the approach used is based on extending replicator dynamics models in evolutionary game theory to a spatial setting. The replicator dynamics of adopters versus non-adopters are characterised by a spatial diffusion model the solution of which illustrates how local institutions drive spatial technology adoption processes via the rules of the game. The model is applied to forage technology adoption in the Philippines...
Tipo: Presentation
Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2000
URL: http://purl.umn.edu/123601

International wheat price volatility and the increasing export of Russia, Kazakhstan and Ukraine
Provedor de dados: 31
Autores: Kemeny,   Gabor; Fogarasi,   Jozsef; Varga,   Tibor; Toth,   Orsolya; Toth,   Kristof.
Increasing price volatility of agricultural commodities over the last decade has focused a growing body of literature to identify the influencing factors of price variability. We analyze the effect of increasing wheat export from the Former Soviet Union (FSU) countries to the international wheat market and price volatility. The major wheat producer and exporter FSU countries, Russia, Ukraine and Kazakhstan have experienced increasing share on the international wheat market. An ordinary least square method is applied to estimate the influence of wheat export from Russia, Ukraine and Kazakhstan on the international wheat price volatility. We found evidence of positive relationship between international wheat price and the expanding net wheat export from FSU.
Tipo: Presentation
Palavras-chave: Wheat price volatility; Wheat export; FSU countries; Risk and Uncertainty; Q17; O13.
Ano: 2012
URL: http://purl.umn.edu/122550

Pathways through the Plantation: Oil Palm Smallholders and Livelihood Strategies in Sarawak, Malaysia
Provedor de dados: 31
Autores: Cramb,   Rob A.; Sujang,   Patrick S.
The dominant view among policy-makers in Sarawak, a resource frontier state in Malaysian Borneo, is that the only viable way to involve smallholders in the oil palm boom that has transformed the agricultural economy of that island is to consolidate them into larger production entities with externally provided management and finance. However, despite lack of government support, the area of smallholder oil palm has increased dramatically in the past decade in those regions with access to roads and palm oil mills. We argue that, once processing infrastructure is in place, oil palm smallholders can readily take advantage of this infrastructure to pursue a profitable livelihood option, with lower cost and greater flexibility than large-scale operations. In this...
Tipo: Presentation
Palavras-chave: Smallholders; Estates; Livelihood strategy; Land policy.; Crop Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124277

Analysis of farm household technical efficiency in Northern Ghana using bootstrap DEA
Provedor de dados: 31
Autores: Abatania,   Luke N.; Hailu,   Atakelty; Mugera,   Amin W.
Crop production is the main source of livelihood for households in Northern Ghana. The government is committed to improving crop production and knowledge about the technical efficiency of crop farms is essential in guiding policy decisions. This paper examined the technical efficiency of 189 crop farms in Northern Ghana using data envelopment analysis (DEA) with bootstrapping. We found that bias-corrected average technical efficiency of the sample farms is 77.26%. The estimated scale efficiency is 94.21%. In a second stage regression, we found that hired labour, geographical location of farms, gender and age of head of household significantly affect technical efficiency. Policy implications of the results are discussed.
Tipo: Presentation
Palavras-chave: Technical efficiency; DEA; Bootstrap; Ghana; OLS regression.; Farm Management.
Ano: 2012
URL: http://purl.umn.edu/124211

Microfinance for Agricultural Firms-  Credit Access and Loan Repayment in Tanzania
Provedor de dados: 31
Autores: Weber,   Ron; Musshoff,   Oliver.
On the example of a commercial microfinance institution (MFI) in Tanzania this paper investigates first whether agricultural firms have a different probability to get a loan and whether their loans are differently volume rationed than loans to non-agricultural firms. Second, we analyze whether agricultural firms repay their loans with different delinquencies than non-agricultural firms. Our results reveal that agricultural firms face higher obstacles to get credit but as soon as they have access to credit, their loans are not differently volume rationed than those of non-agricultural firms. Furthermore, agricultural firms are less often delinquent when paying back their loans than non-agricultural firms. Our findings suggest that a higher risk exposition...
Tipo: Presentation
Palavras-chave: Agricultural Finance; Access to Credit; Loan Repayment; Microfinance Institutions; Financial Economics; International Development; Risk and Uncertainty; G21; G32; Q14.
Ano: 2012
URL: http://purl.umn.edu/122552

Management changes and vessel-level technical efficiency in the Eastern Tuna and Billfish Fishery: a stochastic frontier analysis
Provedor de dados: 31
Autores: New,   Robert.
Changes in fishery management can influence vessels’ efficiency, thereby changing the fishery’s ability to achieve a catch target consistent with maximising net economic returns to the Australian community. The stochastic frontier method is used to analyse the vessel-­‐level technical efficiency achieved in the Eastern Tuna and Billfish Fishery over the period 2001–02 to 2010–11. A significant reduction in fleet size in this fishery following implementation of the Securing our Fishing Future structural adjustment package in 2006 is shown to have had a negligible effect on vessel-­‐level technical efficiency. Also, effort creep was avoided during the period of effort controls; 2008–09 to 2010–11. Tracking changes in technical efficiency over time can help...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124349

A Multilevel Economic Analysis of the Wheat Market in Pakistan
Provedor de dados: 31
Autores: Ashfaq,   Muhammad; Parton,   Kevin A.; Griffith,   Garry R.; Piggott,   Roley R.
Government price policy in Pakistan affects both the supply and demand of wheat. The wheat market has been established in a particular idiosyncratic manner in Pakistan, and a thorough appraisal of policy needs to take this into account. Hence, to analyse various policy interventions, this study develops a multi-level wheat market model. After considering the real world aspects of the wheat marketing chain, a conceptual framework is developed involving five market levels. This is then translated into a multi-equation econometric model. The model is based on secondary time series data from 1971 to 1996. It consists of equations representing supply, demand, stock holding, importing and price formation. The model is used to estimate changes in consumer...
Tipo: Presentation
Palavras-chave: Crop Production/Industries; Marketing.
Ano: 1999
URL: http://purl.umn.edu/123757

Analyzing the Feasibility of Prairie Dog Hunting in the Northern Texas Panhandle
Provedor de dados: 31
Autores: Jones,   DeDe; Mayfield,   Gid.
Prairie dogs are burrowing rodents located throughout the United States.  The black-tailed prairie dog is a common species that primarily inhabits the Great Plains region, with a large population in Texas. While these animals continue to thrive in many locations, there has been a significant reduction in numbers over the past one hundred years.  Several conservation efforts have attempted to remedy this situation.  The Black-tailed Prairie Dog Conservation and Management Plan is a long-term monitoring program between the Texas Parks and Wildlife Department and cooperating landowners.  This plan’s purpose is to develop a strategy that conserves the species while simultaneously protecting property rights.  One of the plan’s recommended methods for keeping...
Tipo: Presentation
Palavras-chave: Prairie Dogs; Texas Ranching; Risk Management; Agribusiness; Agricultural Finance; Environmental Economics and Policy; Farm Management; Financial Economics; Land Economics/Use.
Ano: 2012
URL: http://purl.umn.edu/119764

Economics of controlling invasive species: optimal control and stability of ecological-economic system
Provedor de dados: 31
Autores: Chalak,   Morteza; Ruijs,   Arjan; Hemerik,   Lia; van der Werf,   Wopke; van Ierland,   Ekko C.
Natural enemies such as herbivores that are introduced to reduce invasive plants can spill over into nature, threaten indigenous species and impose significant costs. We develop a bioeconomic model to analyse the optimal control management strategy of an introduced herbivore that has spilled over from a managed system to a natural area. Cost-effective control strategies are analysed that reduce the spillover effects of herbivores on endangered plants species to reduce the risk of extinction and increase benefits obtained from the ecosystem. We consider two competing indigenous plant species as the representatives of the plant community. Only one of these species is consumed by introduced herbivore. We show that the optimal level of controlling herbivores...
Tipo: Presentation
Palavras-chave: Economics; Biological agent; Externality; Spillover; Control; Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124374

DAM EA$Y:  A Framework for Assessing the Costs and Benefits of On-Farm Storage Based Sugarcane Production Systems
Provedor de dados: 31
Autores: Brennan,   Lisa E.; Lisson,   Shaun N.; Bristow,   Keith L.; Schuurs,   Mark; Linedale,   Tony; Smith,   Mike; Hughes,   Dene; Keating,   Brian.
Sugarcane farmers in many districts are considering on-farm water storages (OFWS’s) as a means of countering ongoing water shortages. OFWS’s are attractive because they can be used to capture runoff and tailwater, and for the temporary storage of surplus water from other irrigation sources (eg allocation, out of allocation, water harvesting etc), thereby providing increased flexibility in managing limited water supplies. The decision to invest in such storages is, however, complex and multi-facetted, requiring assessment of a range of biophysical, economic, legislative and social factors. Computer-based simulation models can potentially capture many of these factors and their interactions, and hence, can play a useful decision support role. In this paper,...
Tipo: Presentation
Palavras-chave: Crop growth simulation modelling; On-farm water storage; Irrigation; Sugarcane; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2000
URL: http://purl.umn.edu/123614

Pricing farm loans for credit risk
Provedor de dados: 31
Autores: Bramma,   Keith M.
This article analyses the risk-return efficiency of limits to which loan pricing accounts for credit risk in the Australian-farm sector. A key issue faced by banks is the trade-off between raising returns through higher risk premiums and the possibility of impairing credit quality. The simulation results suggest that the stochastic efficiency of the size of risk-pricing limits is positively related to volatility of farm income when dynamic relationships are considered. This finding implies that Australian banks should price further across the credit-risk spectrum to farm businesses with relatively volatile incomes compared to those with stable incomes.
Tipo: Presentation
Palavras-chave: Agricultural Finance; Risk and Uncertainty.
Ano: 2000
URL: http://purl.umn.edu/123607

How Do Restaurants Benefit from Various Components of a Regional Promotion Campaign?
Provedor de dados: 31
Autores: Xie,   Ran; Isengildina-Massa,   Olga; Carpio,   Carlos E.
This study analyses the economic value of various components of the Certified South Carolina Grown Campaign from the perspective of participating restaurants. A stated-preference choice experiment was conducted as part of the restaurant survey to estimate the willingness to pay (WTP) for each campaign component using a mixed logit model. Individual level WTP was calculated in order to explore the relationship between WTP and characteristics of restaurants. Results indicate that three existing components--Labeling, Multimedia Advertising, and "Fresh on the Menu" have significant positive economic value.
Tipo: Presentation
Palavras-chave: WTP; Mixed Logit Model; SUR Model; Discrete Choice Model; Agribusiness; Agricultural and Food Policy; Political Economy; Production Economics; Research Methods/ Statistical Methods.
Ano: 2012
URL: http://purl.umn.edu/123921

Farm to School: A Market Analysis
Provedor de dados: 31
Autores: Watson,   Marissa C.; Cesar,   Escalante; Ames,   Glenn C.W.; Wolfe,   Kent; Kane,   Sharon P.
This paper explores the potential for the National Farm to School Program to effectively engage with Georgia’s public schools in order to reduce local food insecurity and improve the quality of nutrition provided to students.  A survey was conducted with the specific goals of assessing:  first, the current and future impact Farm to School has and will potentially have on the Georgia economy through schools purchase of local foods; second, the potential market for farmers; third, school administrators willingness to buy local food by Georgia; forth, the level of infrastructure available within schools to prepare fresh, whole foods; and fifth, the perceived opportunities and challenges to buying and preparing local food.  University of Georgia collaborated...
Tipo: Presentation
Palavras-chave: Farm to School; Georgia; Local foods; Public schools; Survey data for local buying; Food security; Agricultural and Food Policy; Community/Rural/Urban Development; Food Consumption/Nutrition/Food Safety; Food Security and Poverty.
Ano: 2012
URL: http://purl.umn.edu/119776

The potential impact of the Health Check™ on diet quality of food away from home purchases
Provedor de dados: 31
Autores: Goddard,   Ellen W.; Drescher,   Larissa S.; Fernando,   Jeewani.
Consumption of food away from home (FAFH) is widely believed to be a contributing factor to the current obesity crisis and other diet related problems in North America. Although FAFH expenditure represents a lower proportion of food expenditure in Canada than in the United States (24% versus 50%) it is still a significant part of Canadian diets. The Canadian Heart and Stroke Foundation has developed a third party accreditation program to identify healthy food items in grocery stores and more recently, restaurants, called the Health Check™ program. The program is not without controversy since some people feel that it is inappropriate to pay for the use of the label and it may be misleading that many processors and restaurants choose not to apply for their...
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123523

AGRICULTURAL PRICE VOLATILITY UNDER CLIMATE CHANGE: The Impact of Multiple Objectives on Commodity Prices
Provedor de dados: 31
Autores: Fuss,   Sabine; Havlik,   Petr; Szolgayova,   Jana; Obersteiner,   Michael; Schmid,   Erwin.
Agricultural price volatility has moved to the forefront of research efforts and political discussion, where much work is already being undertaken with respect to the impact of fluctuations in input prices (e.g. fertilizer, feed and energy). In this paper we also want to take into account the impact of climate change on prices via increased volatility in crop yields. In addition, we analyze the impact of having multiple objectives competing for the land on which crops are grown. In particular, we want to address the concerns that have been voiced about biofuel targets and calls for prioritization of food security.
Tipo: Presentation
Palavras-chave: Energy; Food security; Food price volatility; Optimization under uncertainty; Risk and Uncertainty; Q12; Q18; Q28; C61; D81.
Ano: 2012
URL: http://purl.umn.edu/122539

National Conference on Water, Food Security and Climate Change in Sri Lanka, Volume 2: Proceedings of the Water Quality, Environment and Climate Change, BMICH, Colombo June 9-11, 2009
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Wetlands; Environmental flows; Assessment; Water allocation; Case studies; Rivers; Farming systems; Models; Groundwater; Aquifers; Domestic water; Rainfed farming; Climate change; Wastewater irrigation; Rice; Food security; Environmental Economics and Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Livestock Production/Industries; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2010
URL: http://purl.umn.edu/118404

Threats from Illegal Logging
Provedor de dados: 31
Autores: MacDonald,   Ian.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 2005
URL: http://purl.umn.edu/124404

Global Fair Trade Innovations: Trends 1999-2011
Provedor de dados: 31
Autores: Marconi,   Nicholas G.; DiMarcello,   Nicholas, III; Hooker,   Neal H.
The global Fair Trade market has experienced substantial growth over the past 13 years, as measured by both share and number of innovations. This has developed into a new worldwide market segment, and has helped improve the lives of hundreds of thousands of people. This report compiles data from Mintel’s Global New Product Database (www.gnpd.com), which records food, beverage, health and beauty products launched throughout the world. The company archives extensive information about each product, permitting users to explore emerging marketing strategies. From 1999 through 2011, GNPD recorded 4,465 Fair Trade innovations. These products were sold in over 40 countries. This paper provides a descriptive and comparative statistical analysis of Fair Trade trends...
Tipo: Presentation
Palavras-chave: Fair Trade; Third party certifiers; Organic; Food Consumption/Nutrition/Food Safety; F13; F16; F18.
Ano: 2012
URL: http://purl.umn.edu/123530

Modeling Advertising Expenditures and Spillover Effects Applied to the U.S. Non-Alcoholic Beverage Industry: Vector Autoregression (VAR) and Polynomial Distributed Lag (PDL) Approaches
Provedor de dados: 31
Autores: Dharmasena,   Senarath; Capps,   Oral, Jr.; Bessler,   David A.
The non-alcoholic beverage market in the U.S. is a multi-billion dollar industry growing steadily over the past decade. Also, non-alcoholic beverages are among the most heavily advertised food and beverage groups in the United States. Several studies pertaining to non-alcoholic beverages including the incorporation of advertising effects have been conducted, but most of these have centered attention on milk consumption. Some studies have considered demand interrelationships for several beverages including advertising effects in systems-wide analyses.  In our analysis, we develop and employ a unique monthly time-series data set derived from Nielsen Homsescan panels for household purchases of non-alcoholic beverages over the period from January 1998 through...
Tipo: Presentation
Palavras-chave: Non-alcoholic beverages; Vector autoregression; Polynomial distributed lags; Beverage advertizing; Directed acyclic graphs; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Marketing; C18; C22; C52; C53; C81; D11; D12.
Ano: 2012
URL: http://purl.umn.edu/124363

A Three-Legged-Stool Model for agricultural policy formulation in CARICOM countries
Provedor de dados: 31
Autores: Gordon,   Ronald M.
Bridgetown, Barbados 6th – 10th July, 2009
Tipo: Presentation
Palavras-chave: Agricultural policy formulation; Three-legged stool model; CARICOM countries; Agricultural and Food Policy; Q18.
Ano: 2010
URL: http://purl.umn.edu/122657

An Estimation of the Demand for Dried Distiller Grains by the Cattle Feeding Industry:  A Combination of Survey Methods and Market Projections
Provedor de dados: 31
Autores: Wright,   Andrew P.; Mitchell,   Donna; Hudson,   Darren.
Tipo: Presentation
Palavras-chave: Livestock Production/Industries; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/119947

Farmers’ Perception of Precision Technology:  The Case of Autosteer Adoption by Cotton Farmers
Provedor de dados: 31
Autores: D'Antoni,   Jeremy M.; Mishra,   Ashok K.; Powell,   Rebekah R.; Martin,   Steven W.
Precision agriculture and autosteer technology are, overall, profitable investments for farmers, as previous literature has established. However, what has not been investigated is whether or not farmers perceive these technologies as such. This research postulates that cotton farmers must see potential for higher profits as a result of adopting precision technologies in order to adopt it. Using the 2009 Southern Cotton Precision Farming Survey  and multinomial logit model, this research investigates farmers’ perception of precision agriculture and how those perceptions impact adoption of the autosteer GPS guidance system. Autosteer adoption was found to be significant and positively related to the perceived future importance of precision agriculture as...
Tipo: Presentation
Palavras-chave: Farmers’ perception; Precision agriculture; Autosteer; Multinomial logit estimation; Technology adoption; Input cost saving.; Agribusiness; Agricultural Finance; Farm Management; Financial Economics; Labor and Human Capital; Production Economics; Risk and Uncertainty; Q12; Q16.
Ano: 2012
URL: http://purl.umn.edu/119734

Doing Business with Vietnam
Provedor de dados: 31
Autores: Crosby,   John.
Tipo: Presentation
Palavras-chave: Agribusiness.
Ano: 2001
URL: http://purl.umn.edu/124451

Children’s Consumption of Fruits and Vegetables: Do School Environment and Policies Affect Choice in School Meals?
Provedor de dados: 31
Autores: Ishdorj,   Ariun; Crepinsek,   Mary Kay; Jensen,   Helen H.
Considering most children spend a majority of their weekdays at school and, on average, obtain more than one-third of their daily caloric intake from meals consumed at school during the school year, school is a natural place to implement nutrition policies that would help develop healthy eating habits and improve health and well-being of children. At the same time, local school meal policies may influence what foods are offered and how the foods are prepared. In this regard, the U.S. Department of Agriculture’s (USDA) two school meal programs can play an important role in children’s diets and food habit formation and thus positively influence children’s health. The focus of our research is children’s intakes of fruits and vegetables by location of...
Tipo: Presentation
Palavras-chave: Food Assistance; Fruits and Vegetables; School Meals; Endogeneity; Censoring; Food Consumption/Nutrition/Food Safety; C11; C34; C36.
Ano: 2012
URL: http://purl.umn.edu/123534

Consumers perception of nanotechnologies in the Italian wine sector
Provedor de dados: 31
Autores: Casolani,   Nicola; Chiodo,   Emilio; Fantini,   Andrea.
La ricerca sulla percezione dell’impiego delle nanotecnologie nei diversi settori industriali ha importanti riflessi in termini economici e politici; nel settore agroalimentare esistono numerosi dibattiti sull’impiego delle nanotecnologie: la regolamentazione normativa è oggetto di discussione da parte di scienziati e comitati tecnici; anche l’opinione pubblica avrà un ruolo determinante in questo processo. Obiettivo del presente lavoro è di esaminare l’accettazione delle’uso delle nanotecnologie nei consumatori di vino; l’indagine è stata effettuata su un campione di consumatori abruzzesi ed utilizzando come prodotto di riferimento la più importante denominazione di origine a livello regionale, il Montepulciano d’Abruzzo Doc. Il settore vitivinicolo...
Tipo: Presentation
Palavras-chave: Nanotecnologie; Conjoint analysis; Settore vitivinicolo; Percezione del consumatore; Food Consumption/Nutrition/Food Safety; Q 13.
Ano: 2012
URL: http://purl.umn.edu/124120

Transparency Solutions for Increasing Trust along the Food Chain
Provedor de dados: 31
Autores: Sebok,   Andras; Berczeli,   Attila; Molnar,   Adrienn; Van Lembergen,   Katrien; Gellynck,   Xavier.
The concept of products having designated country of origin was investigated. It was established that a coherent approach can be developed by systematic organisation and structuring of the available information. A working definition was developed for identification of successful practices in food transparency. Several successful solutions for increasing transparency along the food chain were identified. The lessons learned from these solutions can be used for better understanding of the problems related to the transparency of claims and statements on food products having designated country of origin and for increasing the transparency about the validity of such statements and claims
Tipo: Presentation
Palavras-chave: Transparency; Successful practices; Country of origin food; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Marketing.
Ano: 2011
URL: http://purl.umn.edu/122013

The Connection Between Cash Rents and Land Values
Provedor de dados: 31
Autores: Ibendahl,   Gregory A.
The last few years have seen big increases in land values. Cash rents have also increased but perhaps at a slower rate than land values. This paper examines the ratio of land values to cash rents to determine if how cash rents have changed in relation to land value changes. This ratio is important because it helps indicate whether cash rents are a good way of controlling farmland relative to purchasing the land. Results indicate there may be a lag in cash rents before they match the level of land prices. However, this relationship does not always hold.
Tipo: Presentation
Palavras-chave: Land values; Leasing; Cash rents; Farmland; Real estate; Agricultural Finance; Crop Production/Industries; Farm Management; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/120055

CONSUMER AND IMPORT TAXES IN THE WORLD WINE MARKET: AUSTRALIA IN INTERNATIONAL PERSPECTIVE
Provedor de dados: 31
Autores: Berger,   Nicholas; Anderson,   Kym.
Virtually all countries tax the consumption of wine (and other alcoholic beverages). However, the rates of taxation, and the tax instruments used, vary enormously between countries. This paper details for all OECD and some other countries the consumer tax rates as of 1996, showing specific or ad valorem excise or wholesale sales taxes, import tariffs, export subsidies and value-added or goods-and-services taxes. It also aggregates them into an ad valorem consumer tax equivalent (CTE) at various wine price levels (since many are specific taxes and so their CTE varies with the price). T he consumer tax equivalent tends to be lower the greater a country's per capita production of wine, especially for premium wine. Australia and New Zealand are shown to have...
Tipo: Presentation
Palavras-chave: Consumer wine taxation; GST; Excise taxes; Consumer/Household Economics; H21; H22; H23; F13.
Ano: 1999
URL: http://purl.umn.edu/123770

Do consumers’ preferences change when on vacation? A willingness to pay study on apples and honey
Provedor de dados: 31
Autores: Morkbak,   Morten Raun; Jensen,   Jorgen Dejgaard.
Ways of increasing the market for local produce beyond the local residents within the local community, could include the following two potential solutions: 1) an expansion out to a more national/global market, which though would be costly in terms of transportation costs or 2) getting national/global consumers into the local market, e.g. as tourists. The objective of the present paper is to investigate the tourism's potential in the promotion of locally produced food products, within the perspective of context dependency and consumers' preferences for local produce. Firstly, people are asked to state their preferences for locally produced apples and honey, respectively. Secondly, we illustrate how preferences towards local produce depend on the situation,...
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123525

Adjustment to Salinity in Irrigation Regions: Ex Post Evaluation of the Tragowel Plains Plan
Provedor de dados: 31
Autores: Baird,   Catherine A.; Gyles,   Oliver.
An early-mid project evaluation of the benefits and costs of the Tragowel Plains Salinity Management Plan estimated the net cost after six years at A$ 5.5 million. The cumulative cash flows for the water transfer, drainage and halophyte programs were all positive with benefit to cost ratios (BCRs) of 3.2, 1.3 and 1.1. Inclusion of estimated future benefits and costs to year 30 gave BCRs of 13.7, 1.3 and 4.0 with net present values (NPVs) of A$ 18.8 million, 2.5 million and 0.4 million respectively. Net costs for other integrated programs including salinity survey, whole farm planning, facilitation of structural adjustment, revegetation and coordination of implementation reduced the NPV of the first six years of implementation to A$ 12.1 million. The water...
Tipo: Presentation
Palavras-chave: Salinity; Structural adjustment; Water transfer; Water market; Tragowel Plains; Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123760

Local Food Wholesale Infrastructure in New York State: economic impact, policy implications and recommendations
Provedor de dados: 31
Autores: Jablonski,   Rebecca; Mansury,   Yuri.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123974

CAPITAL SOCIAL E DESENVOLVIMENTO DAS COMUNIDADES PISCATÓRIAS DE CABO VERDE: ESTUDO DE CASO DA ILHA DE SANTIAGO
Provedor de dados: 31
Autores: Baptista,   Antonio Jose Medina dos Santos; Brito,   Olga Ludemilla Leite; Tavares,   Victor Henrique Gomes; Lopes,   Higino Gomes; Varela,   Alcides Sanches.
Este trabalho analisou o capital social nas comunidades piscatórias da Ilha de Santiago. Os resultados indicam que o estoque de Capital Social é diferente nos Concelhos da Ilha de Santiago sendo que o Concelho do Tarrafal foi o que apresentou maior indice de Capital Social e o Concelho de Ribeira Grande foi o que apresentou menor indice. O Acesso á informação, confiança e ajuda de vizinhos são os pontos negativos que mereceram destaque em praticamente todos os Concelhos da Ilha. Sendo o Capital Social um factor importante no processo de desenvolvimento, deve-se adoptar politicas que possam aumentar o estoque de capital social comunitário propiciando o surgimento de iniciativas colectivas baseadas na cooperação e confiança no sentido de possibilitar o...
Tipo: Presentation
Palavras-chave: Capital social; Pesca; Ilha de Santiago; Social capital; Fishing; Island of Santiago; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/118710

BALANCING TRADE-OFFS IN THE PROVISION OF ENVIRONMENTAL FLOWS IN THE SNOWY RIVER
Provedor de dados: 31
Autores: Crean,   Jason; Davenport,   Scott V.
The NSW, Victorian and Commonwealth Governments are in the process of corporatising the Snowy Mountains Hydro-electric Scheme. As part of this process a water inquiry was established to assist in the determination of the environmental operating conditions of the new business, Snowy Hydro Ltd. The Inquiry’s principal task was to examine the range of environmental issues arising from the current pattern of water flows caused by the Scheme and to develop a comprehensive range of costed options to address these issues. Central to the Inquiry’s deliberations is the re-allocation of water from irrigated agriculture and electricity generation to the Snowy River catchment. This paper focuses on trade-off issues associated with such a re-allocation and the...
Tipo: Presentation
Palavras-chave: Environmental flows; Environmental trade-offs; Resource allocation.; Environmental Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123798

A Heuristic Optimization Model for Vegetable Production and Marketing Decisions
Provedor de dados: 31
Autores: Dillon,   Carl R.; Vassalos,   Michael.
Poster presentation at 2012 AAEA
Tipo: Presentation
Palavras-chave: Mathematical programming; Decision making; Vegetables; Heuristics; Farm Management; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/123854

FLEXIBLE DISTRIBUTED LAGS
Provedor de dados: 31
Autores: Chotikapanich,   Duangkamon; Griffiths,   William E.
In econometrics there is a long history of using continuous functions to force distributed lag coefficients to behave in an economically accepted way. For example, geometrically declining lags have often been used to model coefficients that we believe should be declining. Polynomial lags have been used to model lag coefficients expected to increase and then decrease. In this paper a more flexible way of imposing such prior information is investigated. Inequality constraints are used to impose knowledge about the relative magnitudes of coefficients without forcing them to lie on a smooth continuous curve. A Metropolis algorithm is used to get posterior density functions for the lag coefficients and functions of those coefficients for the Nerlove orange data...
Tipo: Presentation
Palavras-chave: Research Methods/ Statistical Methods.
Ano: 2000
URL: http://purl.umn.edu/123623

An Empirical Assessment of the ‘International Competitiveness’ of the Australian Processed Food Industry
Provedor de dados: 31
Autores: Silva,   Dayratna.
This paper examines the competitiveness of the Australian processed food industry using trade pattern measures and constant market share (CMS) model. The trade orientation criterion adopted in the study revealed that the industry has evolved over the years with an export focus and capable of competing with foreign suppliers in the domestic market. But an important empirical finding is that the industry’s competitive position in foreign markets as a whole has deteriorated over the period between 1980 and 1996 although different sub groups within the industry have shown mixed performance.
Tipo: Presentation
Palavras-chave: Agribusiness.
Ano: 2000
URL: http://purl.umn.edu/123731

The economics of ethical behaviour and environmental management
Provedor de dados: 31
Autores: Schilizzi,   Steven.
Ethics and economics have long been viewed, if not as being incompatible, at least as being at odds with each other. This has often translated in the field of environmental policy and management into radical opposition between supporters of economic performance and environmentalists. It has seemed that the ethics of economics and that of environmental preservation were themselves at odds. The discussion has opposed utilitarian and duty-based philosophies. Ultimately, the firm manager, especially when under financial pressure, must decide between keeping the firm in business and doing the right thing for the environment. This view of things is now itself at odds with reality. One needs to explain why an increasing number of firms, both big and small, are...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Institutional and Behavioral Economics; Z10; A12; L20; M20; Q29.
Ano: 2000
URL: http://purl.umn.edu/123729

Food Access, Eating Habits and Adult Obesity in Italy
Provedor de dados: 31
Autores: Bimbo,   Francesco; Bonanno,   Alessandro; Nardone,   Gianluca.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123978

An Optimal Control Model of Deforestation in the PDR of Laos
Provedor de dados: 31
Autores: McAllister,   Ryan; Beard,   Rodney; Asufa-Adjaye,   John.
The PDR of Laos has thus far retained a large proportion of its natural forests relative to other SE Asian countries. This disproportionally high level of forestation, along with current political and economic factors, may create an increase in the demand for Laotion timber. In particular, if the Laotion government maintains responsibility for natural timber harvesting and sets sustainable rates, then the increase in demand may flow into Laos’ illegal timber market. This paper uses an optimal control model to analyse the impact of an increase in the demand for timber. It argues that the illegal timber market damages both the environment and economy.
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123704

Pricing Perishables
Provedor de dados: 31
Autores: Weaver,   Robert D.; Moon,   Yongma.
A key feature of food products is their perishability. Within the short marketing window that characterizes most food and ag products, demand is typically highly stochastic and difficult to predict. This combination of features poses substantial challenges to retailers when pricing products and has implications for performance that ripples through vertical food chains. For many food products, processing to forms that can be preserved and held in inventory has traditionally been used as a means of coping with these conditions, despite its high costs and ancillary risks introduced such as change in product attributes and deterioration. This paper presents an alternative ERM strategy that focuses on dynamic pricing to control the rate of sale for perishable...
Tipo: Presentation
Palavras-chave: Dynamic pricing; Demand substitution; Consumer choice model; Robust optimization; Price assurance.; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Productivity Analysis; Research Methods/ Statistical Methods.
Ano: 2011
URL: http://purl.umn.edu/122007

A Tale Of Two States: Deregulation Of The Dairy Industry In NSW And Victoria
Provedor de dados: 31
Autores: Edwards,   Geoff W.
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy; Marketing.
Ano: 2000
URL: http://purl.umn.edu/123633

Design of substrate supply contracts for biogas plants
Provedor de dados: 31
Autores: Reise,   Christian; Liebe,   Ulf; Musshoff,   Oliver.
For a sustainable development of energy production in biogas plants, the continuous supply with substrates is essential. To the authors’ knowledge, there have not been carried out any quantitative investigations of farmers’ choices with regard to supply contracts for biogas plants. Thus, it has been only possible to a limited extent to make predictions for a targeted design of supply contracts. We therefore investigated different factors, which might be relevant for the conclusion of substrate supply contracts, by conducting a survey with 178 German farmers. The survey included a choice experiment, in which participants were confronted with different contract attributes (features). These attributes were varied systematically and thus revealed the influence...
Tipo: Presentation
Palavras-chave: Renewable energy; Bioenergy; Substrate supply contract; Contract design; (labeled) choice experiment; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124428

Dynamic Markets – Dynamic Relationships: The Example of Grain Marketing in Germany
Provedor de dados: 31
Autores: Schulze,   Birgit.
Grain markets in Germany, as in the rest of the world, are becoming more and more volatile. At the same time, the consolidation process on the level of the first hand, buying the grain from farmers, is moving forward in a strong pace, leaving farmers with less local alternatives to sell their grain. This paper addresses the question of what these developments mean for farmers’ grain marketing decisions and for their relationships with local marketing partners.
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Productivity Analysis.
Ano: 2011
URL: http://purl.umn.edu/122001

Induced Institutional Innovation in Response to Transaction Costs: The Case of the National Native Title Tribunal
Provedor de dados: 31
Autores: McCann,   Laura M.J.
The theory of induced innovation says that technological innovations which economize on relatively scarce inputs will be invented and adopted. Hayami and Ruttan have hypothesized that this model also holds for institutional innovations. Williamson suggests that economic organization, such as vertical integration, is the result of transaction cost minimization. Coase discusses the transaction costs of negotiation versus the court system to solve externality problems. These various threads of the literature are brought to bear on the issue of innovations over time in relation to the National Native Title Tribunal. Mining companies have developed guidelines for negotiation with Aboriginal claimants. In Western Australia, regional agreements have been created...
Tipo: Presentation
Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 1999
URL: http://purl.umn.edu/123852

Poverty reduction through improved agricultural water management; Proceedings of the Workshop on Pro-poor Intervention Strategies in Irrigated Agriculture in Asia Islamabad, Pakistan, 23-24 April 2003
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Water management; Irrigated farming; Poverty; Food security; Households; Income; Drought; Forest policy; Natural disasters; Land ownership; Groundwater; Water market; Water balance; Legislation; Tube wells; Institutional development; Crop production; Wages; Economic aspects; Tillage; Water harvesting; Public policy; Surface water; Labor; Exports; Public sector; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Financial Economics; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Institutional and Behavioral Economics; Land Economics/Use; Public Economics; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/118414

Strategic Self-Ignorance
Provedor de dados: 31
Autores: Thunstrom,   Linda; Nordstrom,   Jonas; Shogren,   Jason F.; Ehmke,   Mariah D.
This paper analyzes if people use ignorance as an excuse to pursue immediate gratification, at the expense of future wellbeing, a behavior we label ‘strategic self-ignorance’. In a theoretical model we show that present-biased individuals benefit from choosing ignorance of the potentially negative impact of present consumption, and that ignorance leads to over consumption of harmful goods. In an experiment we empirically test for strategic self-ignorance. The experiment entails prepared meals, for which subjects may be familiar with the taste (immediate utility) but are uninformed of the calorie content (potential harm to future health). Subjects are offered costless information on the calorie content of the meal alternatives. A majority of subjects (58...
Tipo: Presentation
Palavras-chave: Strategic ignorance; Harmful consumption; Experiment; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Health Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/123949

Solidarity Economies in Marche, Italy: current trends and perspectives
Provedor de dados: 31
Autores: Belletti,   Matteo; Orazi,   Francesco; Socci,   Marco; Giovagnoli,   Marco; Pojaghi,   Barbara.
The paper illustrates selected results of an exploratory research study coordinated by the “Solidarity Economy Network” of the Marche Region in Italy (REES Marche) in 2010-2011. The study was funded by Banca Popolare Etica, it involved three Universities of the Region (Università Politecnica delle Marche, Università di Macerata, Università di Camerino), adopting an interdisciplinary approach. It aimed at investigating the cultural, economic and political determinants that characterize the world of critical consumption, examining a sample of 20 GAS (Gruppi di Acquisto Solidale, Solidarity Purchasing Groups), 182 GAS members and 50 firms (among which 20 agricultural GAS suppliers). Data was collected through ad hoc questionnaires, in depth interviews and...
Tipo: Presentation
Palavras-chave: Critical consumption; Active citizenship; Territorial networks; Alternative and non-market relations; Short food supply chain; Food Consumption/Nutrition/Food Safety; A13; D12; Z13; Q12; Q56; Q57.
Ano: 2012
URL: http://purl.umn.edu/124127

Testing for linear and threshold cointegration under the spatial equilibrium condition
Provedor de dados: 31
Autores: Araujo-Enciso,   Sergio Rene.
Economic theory states that the spatial equilibrium condition is a region where prices can be or not cointegrated. It is when prices are within such a region when they are no cointegrated, when prices are in its boundaries they are not only cointegrated but also fulfilling the Law of One Price (LOP). Nonetheless the econometric techniques assume a mean reverting process in order to test for cointegration, either linear or non linear.  This research shows that in the absence of such mean reverting process by using prices in pure equilibrium, cointegration (linear and non linear) is often rejected. Such findings go in line with the Band Threshold Autoregressive Model where the neutral band is a region of no cointegration. Furthermore it can be concluded that...
Tipo: Presentation
Palavras-chave: Spatial Equilibrium Condition; Testing Cointegration; Demand and Price Analysis; Risk and Uncertainty; C15; E37.
Ano: 2012
URL: http://purl.umn.edu/122545

A Spatial Econometric Analysis of Compliance with an International Environmental Agreement on an Open Access Resource
Provedor de dados: 31
Autores: Borsky,   Stefan; Raschky,   Paul A.
This paper provides an empirical analysis of the role of intergovernmental relations on a country's effort to enforce the objectives of an international environmental agreement on an open access resource. Intergovernmental interaction allows signatory countries to observe compliance behavior of other signees and to punish non-compliance by applying bi- and multilateral sanctions. We use a cross-sectional dataset that contains country level information about compliance with Article 7 of the 1995 UN Code of Conduct for Responsible Fisheries. Our identification strategy combines a spatial autoregressive model with spatial autoregressive disturbances and an instrumental variable approach. We find a strong positive effect of other countries' compliance on the...
Tipo: Presentation
Palavras-chave: International environmental agreements; Open access resources; Spatial econometrics; Environmental Economics and Policy; C21; F53; Q22.
Ano: 2012
URL: http://purl.umn.edu/124425

Can the Value of Ecosystem Services Pay for the Conservation of the World’s Remaining Tropical Rainforests?
Provedor de dados: 31
Autores: Brand,   David.
Deforestation continues at a significant rate, especially in developing tropical countries. The process is a consequence of pressures to realise the commercial value of the timber and/or the land, the latter typically for either agriculture or settlement. Forests are integral to a variety of increasingly valuable environmental systems — carbon, water and biodiversity. Measures such as stopping illegal logging, and labelling logs from sustainablymanaged forests, are important palliatives. However, the real need is to develop price signals that reflect the substantial value of environmental services, and to integrate these into the international commodity economy.
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124399

Agency Perceptions of Alternative Salinity Policies: Are They Measuring Transaction Costs?
Provedor de dados: 31
Autores: McCann,   Laura M.J.
Economics has looked at the decision process of politicians but the decision process of agency staff has primarily been the purview of sociologists. Agencies affect the final form of regulations, they may enforce or ignore regulations that exist, and they provide information to the political process. Policies recommended by economists for non-point source pollution control are seldom implemented by government agencies. This study examined the relationship between preferences for a particular policy and the perceived farmer cost, farmer resistance, efficacy in salinity reduction, fairness, and administrative costs. The latter were included to find whether transaction costs of implementing policies affect preferences and whether this could help explain the...
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 1999
URL: http://purl.umn.edu/123851

WOOL’S FUTURE in WESTERN AUSTRALIA and the R&amp;D IMPLICATIONS: A Discussion Paper
Provedor de dados: 31
Autores: Bathgate,   Andrew D.; Kingwell,   Ross S.; O'Connell,   Michael.
Sustained low prices for wool have resulted in a prolonged decrease in the profitability of wool production. The extent of the decline has led some farmers to question whether wool has a viable future on their farms. In many regions growers have substantially increased their area of crop and reduced their commitment to wool production. Stock numbers have declined appreciably and there is concern amongst some that the wool industry may not recover.  This paper uses Western Australia as a case study for investigating the future of wool. In particular the nature and role of R,D&amp;E in the industry is examined. The success of R,D&amp;E is reviewed and the directions and likely impacts of future R,D&amp;E on farm are discussed.
Tipo: Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123761

Smallholder compliance with private standard certification: the case of GlobalGAP adoption by mango producers in Peru
Provedor de dados: 31
Autores: Lemeilleur,   Sylvaine.
The prevalence of food quality standards in international trade is constantly increasing and has a growing influence on developing countries. A wide range of literature in development economics has focused on the debate of whether international standards exclude small-scale farmers from high-value food markets. In fact, the evidence is mixed. New debates arise on what conditions small farmers can really comply with, pointing out both threshold capital requirements, on the one hand, and industry structure and institutional environment, on the other hand. Drawing on a microeconomic approach, our paper is a contribution to the literature exploring the patterns and determinants of smallholders’ adoption of the food standard. We focus our case study on...
Tipo: Presentation
Palavras-chave: GlobalGAP; Standard adoption; Development; Small-scale farmer; Mango; Peru; Agribusiness; Food Consumption/Nutrition/Food Safety; International Development; Marketing; L22; O12; Q13.
Ano: 2012
URL: http://purl.umn.edu/123457

ANU Forestry Market Report Project
Provedor de dados: 31
Autores: Bhati,   U.N.
Tipo: Presentation
Palavras-chave: Marketing; Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123606

Public greenspace and life satisfaction in urban Australia
Provedor de dados: 31
Autores: Ambrey,   Christopher L.; Fleming,   Christopher M.
This paper examines the influence of public greenspace on the life satisfaction of residents of Australia’s capital cities. A positive relationship is found between the percentage of public greenspace in a resident’s local area and their self-reported life satisfaction. On average, it is found that a resident has an implicit willingness-to-pay of $1,168 in annual household income for a one per cent (143m2) increase in public greenspace. The relationship between public greenspace and life satisfaction however, is non-linear. Additional results suggest that the value of greenspace increases with population density and that lone parents, the less educated and those living in high rise dwellings benefit to a greater extent from the provision of public...
Tipo: Presentation
Palavras-chave: Happiness; Household; Income and Labour Dynamics in Australia (HILDA); Geographic Information Systems (GIS); Greenspace; Life Satisfaction; Non-market Valuation.; Community/Rural/Urban Development; C21; Q51; R20.
Ano: 2012
URL: http://purl.umn.edu/124302

Fifteen Years Later: Examining the Adoption of Bt Corn Varieties by U.S. Farmers
Provedor de dados: 31
Autores: Fernandez-Cornejo,   Jorge; Wechsler,   Seth James.
This study presents recent results on the impact of adopting Bt corn on farm profits, yields, and seed and insecticide use.  The study employs an econometric model that corrects for self-selection and simultaneity and uses farm-level survey data for 2010.  Results confirm previous findings that Bt adoption is associated with increased profits and yields. However the Bt adoption is not significantly related to insecticide use as infestation levels in 2010 are very low and 90 percent of the farmers in the sample did not use insecticides at all.
Tipo: Presentation
Palavras-chave: Genetically engineered corn; Bt corn; Insecticide use; Corn yields. technology adoption.; Crop Production/Industries; Farm Management; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/124257

Impact of Off-Farm Employment on Farmers’ Willingness to Grow Switchgrass and Miscanthus
Provedor de dados: 31
Autores: Gedikoglu,   Haluk.
Current study analyzed the socio-economic factors that impact farmers’ willingness to grow switchgrass and Miscanthus in Missouri and Iowa. The results of study show that current level of farmers’ willingness to grow either crop is low. Hence, there are barriers to accomplishing to goal of producing 21 billion gallons of cellulosic ethanol by 2022, as set by the Energy Independence and Security Act of 2007. The results of the ordered probit regressions show that farmers with higher education levels and smaller farm sales are more willing to grow energy crops. The results of this study show that currently growing energy crops is more attractive to small farms as a source of crop diversification, rather than an alternative crop production in the big scale by...
Tipo: Presentation
Palavras-chave: Bioenergy; Cellulosic Ethanol; Switchgrass; Miscanthus; Ordered Probit; Agricultural and Food Policy; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119663

MULTIPLE OBJECTIVES ON NSWDAIRY FARMS:ASSIGNED IMPORTANCE AND RELATED SATISFACTION
Provedor de dados: 31
Autores: Harrison,   Jennifer L.; O'Brian,   Dennis T.
Dairying is a major rural industry in New South Wales (NSW). It contributes significantly to local economies through farm level activities, by generating substantial downstream employment and value adding through processing. In recent years dairy farm management has become increasingly complex with a need to balance numerous, perhaps conflicting, objectives. Farmers must reconcile their own private goals with those of society. They face intense pressures to increase production, reduce production costs and increase product quality while simultaneously conserving natural resources, maintaining lifestyle and achieving other personal objectives. The extent to which these objectives are mutually achievable may have implications for both the importance attached...
Tipo: Presentation
Palavras-chave: Farm Management; Livestock Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123813

Economic Feasibility of Sustainable High Oilseed-Based Biofuel Production: The Case for Biodiesel in North Carolina
Provedor de dados: 31
Autores: Yeboah,   Anthony K.; Naanwaab,   Cephas B.; Yeboah,   Osei-Agyeman; Owens,   John Paul; Bynum,   Jarvetta S.
We assess the economic feasibility of a 10 MMGY biodiesel plant using a Monte Carlo Cash Flow model programmed in Excel using @Risk, a simulation and risk analysis software.  The model incorporates stochastic components to capture uncertainty in the analysis.  The stochastic components are mainly variables that may exhibit risk, such as input prices, output prices, and expected revenues, and these are assigned probability distributions in the model. The model is programmed with three output variables: stream of revenues,  profits/loss,  and the resulting net present value (NPV) over ten year forecast period.   Results from the cash flow analysis show that average expected revenues from the sale of biodiesel and co-products will be $48.5 million and total...
Tipo: Presentation
Palavras-chave: Economic feasibility; Biodiesel; Monte carlo simulations; Risk analysis; Sensitivity analysis.; Agribusiness; Production Economics; Resource /Energy Economics and Policy; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/119729

Irrigation and Water for Sustainable Development; Proceedings of the Second Forum December 15-16, 2008, Addis Ababa, Ethiopia
Provedor de dados: 31
Autores: Awulachew,   Seleshi Bekele; Erkossa,   Teklu; Balcha,   Yodit.
Tipo: Presentation
Palavras-chave: Sustainable development; Irrigation management; Supplemental irrigation; Land management; Investment; Case studies; Public sector; Private sector; Cooperation; Government policy; Rural poverty; Food Security and Poverty; Land Economics/Use; Research Methods/ Statistical Methods.
Ano: 2008
URL: http://purl.umn.edu/118400

Forests, Wood and Livelihoods
Provedor de dados: 31
Autores: Byron,   Neil Holland.
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124424

WHAT DOES FOOD AND WATER HAVE TO DO WITH WAR?
Provedor de dados: 31
Autores: Fischer,   Tim.
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123853

Private irrigation in Sub-Saharan Africa; Regional Seminar on Private Sector Participation and Irrigation Expansion in sub-Saharan Africa, Proceedings 22-26 October 2011, Accra, Ghana
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Irrigation management; Privatization; Irrigated farming; Financing; Irrigation systems; Gender; Women; Government managed irrigation systems; Farmer managed irrigation systems; Rice; Horticulture; Technology transfer; Pumps; Drip irrigation; Filtration; Capacity building; Urban agriculture; Poverty; Water users associations; Agricultural credit; Agricultural and Food Policy; Agricultural Finance; Farm Management; Financial Economics; Food Security and Poverty; Institutional and Behavioral Economics; Labor and Human Capital.
Ano: 2002
URL: http://purl.umn.edu/118418

Assessing farm sustainability. An application with the Italian FADN sample.
Provedor de dados: 31
Autores: Povellato,   Andrea; Bodini,   Antonella; Longhitano,   Davide; Scardera,   Alfonso.
As policy makers, taxpayers and consumers are willing to know the actual contribution of farming to natural and social environment, sustainability and sustainable development arose as key issues in public debates. Sustainability is a multifaceted concept that includes environmental, economic and social objectives and policy makers need information to take effective decisions. Analysts should rank decisional units according to sustainability criteria and should offer to policy makers more and more insights on the different points of view behind the three dimensions of sustainability. Within the current FADN database sustainability indicators have been identified. In some cases estimations have been necessary and in some other cases thanks to allocation of...
Tipo: Presentation
Palavras-chave: Sustainability farm index; FADN; Multi-criteria approach; Farm Management; Q51; Q56.
Ano: 2012
URL: http://purl.umn.edu/124381

Political Consumerism and Food Community Networks
Provedor de dados: 31
Autores: Cembalo,   Luigi; Migliore,   Giuseppina; Schifani,   Giorgio.
European society, with its steadily increased welfare levels, is not only concerned about food (safety, prices), but also on other aspects such as biodiversity loss, landscape degradation, pollution of water, soil and atmosphere. To a large extent these concerns can be translated into a wider concept named sustainable development defined as a normative concept by Morgan and Sonnino (2008). Sustainability in the food chain means approaching a new emerging vision of a sustainable agro-food system introducing an institutional dimension to take into account. Among different attempts to conjugate such concepts, there is one that is taking place in many Regions of Italy. In the last years spontaneous aggregations of consumers are developing. They are named...
Tipo: Presentation
Palavras-chave: Sustainability; New Models of Consumption; Solidarity Purchase Groups; Institutions and Economics; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Productivity Analysis; Public Economics.
Ano: 2011
URL: http://purl.umn.edu/122004

Un modello per la valutazione della sostenibilità territoriale delle filiere agroalimentari: struttura e applicazione alla sfera ambientale
Provedor de dados: 31
Autores: Cicatiello,   Clara; Pancino,   Barbara; Franco,   Silvio.
Questo lavoro si pone l’obiettivo di proporre un approccio interpretativo che sia in grado di guidare la valutazione della sostenibilità delle diverse forme organizzative delle filiere agroalimentari, offrendone una prima applicazione alla misura della sostenibilità ambientale di diversi modelli di filiera. Il modello proposto nel lavoro adotta un approccio a tre sfere – ambiente, società, economia – per definire la sostenibilità della filiera agroalimentare, articolandosi secondo una struttura gerarchica in cui a ognuna delle tre dimensioni corrispondono alcune variabili di misura. La valutazione quantitativa di tali variabili è legata a un set di indicatori, la cui integrazione fornisce una espressione sintetica della sostenibilità di una filiera. Per la...
Tipo: Presentation
Palavras-chave: Agribusiness.
Ano: 2012
URL: http://purl.umn.edu/124383

32nd Annual Conference - Australian Agricultural Economics Society, La Trobe University, 8-11 February 1988
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1988
URL: http://purl.umn.edu/118907

Stability of price premiums for wool
Provedor de dados: 31
Autores: Chang,   Hui-Shung (Christie).
The objective of this study was to determine whether long-run relationships existed between price premiums for wools with different fibre diameters. Based on cointegration analysis using monthly data from 1976.8 to 1999.10, the results showed that price premiums, in relative price terms, for fibre diameters between 19 and 23 micron were cointegrated. Furthermore, the price premiums for 19, 20 and 21 micron were found to be weakly exogenous. The latter result suggested that price premiums for finer wools tended to be more stable, compared with coarser wools which appeared to bear the burden of price adjustments. The implication is that wool producers would enjoy more stable prices, and hence income, by focusing on finer wools.
Tipo: Presentation
Palavras-chave: Cointegration; Error correction model; Reserve price scheme; Wool marketing.; Demand and Price Analysis; Livestock Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123621

31st Annual Conference- Australian Agricultural Economics Society, Adelaide, 9-12 February 1987
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1987
URL: http://purl.umn.edu/118904

An economic assessment of Insecticide Resistance Management strategies in the Australian Cotton Industry
Provedor de dados: 31
Autores: Hoque,   Ziaul; Farquharson,   Robert J.; Dillon,   Martin; Kauter,   Greg.
Cotton production in Australia is a high-value industry with about 90% of fibre produced being exported to Asia, primarily to Indonesia. One aspect of modern cotton production is the heavy usage of insecticide sprays to combat Helicoverpa insects. The high cost of sprays and the public view of the industry regarding its perceived impact on the environment have led to the development of integrated pest management strategies. The measurement of insecticide resistance within insect populations has also prompted the development of insecticide resistance management (IRM) strategies. The aim of the work reported here is to improve the understanding and adoption of IRM strategies by cotton growers. This is pursued by conducting an economic assessment of...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123662

Risk Aversion and Urban Water Decisions
Provedor de dados: 31
Autores: Freebairn,   John W.
Application of the product characteristics model and the finance portfolio choice model are used to illustrate the important effects of risk aversion held by decision makers in making decisions in the urban water markets. Decision makers face uncertainty about water demand, water inflows and supply costs, and about government policy. Relative to risk neutrality assumed in many models, risk aversion changes decisions about the management of available water supply infrastructure, and about the form and timing of supply augmentation options. Recognition of heterogeneity of buyer preference with respect to risk suggest efficiency gains from offering a variety of cost-security of supply characteristic packages to water buyers.
Tipo: Presentation
Palavras-chave: Community/Rural/Urban Development; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124206

Economic Efficiency of U.S. Organic Versus Conventional Dairy Farms:  Evidence from 2005 and 2010
Provedor de dados: 31
Autores: Nehring,   Richard F.; Gillespie,   Jeffrey M.; Hallahan,   Charles B.; Sauer,   Johannes.
We estimate an input distance function for U.S. dairy farming to examine the competitiveness of organic and non-organic dairy production by system and size. Across organic/non-organic systems and size classes, size is the major determinant of competitiveness based on various measures of productivity and returns to scale.
Tipo: Presentation
Palavras-chave: Organic; Non-organic; Input Distance Function; Livestock Production/Industries; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/119769

Trading off dietary choices, physical exercise and cardiovascular disease risks
Provedor de dados: 31
Autores: Grisolia,   Jose M.; Longo,   Alberto; Hutchinson,   George; Kee,   Frank.
This paper analyses how individuals trade-off health risks against lifestyle choices. The work uses a choice experiment (CE) survey for a representative sample of the Northern Ireland population. Unlike most CE studies for valuing public health programs, this questionnaire uses a tailored exercise based on the individuals’ baseline choices. A fat screener links actual cardiovascular diseases (CVD) risk to each specific choice set in terms of diet. Individuals are informed about their real status quo risk of a fatal cardiovascular event, based on an initial set of health questions. Thus, actual risks, real diet and exercise choices are the elements that constitute the choice task. Our results show that our respondents are willing to pay for reducing...
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123527

GROWTH, POLICYMAKING, TRADE AND ECONOMIC DEVELOPMENT IN MALAYSIA
Provedor de dados: 31
Autores: Salih,   Thamir M.
For the period between 1957 and 1997, Malaysia’s development is analysed to determine the roles of inputs, planning, trade and government intervention in economic activity. Foreign investment is also analysed. During this period, by international standards, growth that Malaysia experienced was impressive. This growth was achieved through a policy framework that used government planning and investment in conjunction with incentives for the private sector. A unique feature of Malaysia’s planning was its call for social justice to advance the economic interest of its less economically privileged population. By adopting amalgam of development strategies and policies, policymakers were successful in improving the socio-economic status of the majority of the...
Tipo: Presentation
Palavras-chave: Economic Development; Export; Growth; Investment; Planning; Sustainability; Country Studies: Malaysia.; Agricultural and Food Policy; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/124437

An Analysis of the Feasibility of Carbon Management Policies as a Mechanism to Influence Water Conservation Using Optimization Methods
Provedor de dados: 31
Autores: Wright,   Andrew P.; Hudson,   Darren.
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119819

Emerging Diseases: Causes, Conditions and Controls
Provedor de dados: 31
Autores: Jeggo,   M.H.; Eaton,   B.T.
There is no doubt of the increasing risk from new and emerging diseases and that such diseases have the potential for profound implications for all sectors of society. The emergence of entirely new diseases such as SARS is usually the result of changes in the way that we do things and is often difficult to predict. The increasing emergence and spread of more traditional diseases may be due not only to evolution of the causative agent but also to the impact that we, as humans, have on our environment. Whatever the cause, the risk is increasing and threatens as much those striving to emerge from poverty as the more developed groups in our society. Understanding better the conditions that drive these changes, recognising emerging diseases earlier than we...
Tipo: Presentation
Palavras-chave: Livestock Production/Industries; Risk and Uncertainty.
Ano: 2003
URL: http://purl.umn.edu/124021

LOCALIZACAO DE FABRICAS MISTURADORAS DE ADUBO NA REGIAO CENTRO-OESTE BRASILEIRA: Uma Aplicacao de Programacao Linear
Provedor de dados: 31
Autores: Carvalho,   Leandro Bernardino de.
Atualmente, dois dos grandes desafios com os quais o agronegócio brasileiro, responsável por aproximadamente 33% do PIB nacional (SECEX, 2005), se depara em seu constante crescimento são a alta dependência de produtos químicos (fertilizantes) para que sua fronteira agrícola se expanda e, conseqüentemente, as enormes distâncias (e custos de transportes) que essas fronteiras impõem para que sejam vencidas, tanto para o recebimento de insumos de produção, quanto para o fornecimento de seus produtos finais. Particularmente, a região Centro-Oeste brasileira, formada pelos Estados de Goiás, Mato Grosso, Mato Grosso do Sul e Distrito Federal, se enquadra em ambos os pontos – possui grandes fronteiras agrícolas a serem exploradas e, ao mesmo tempo, se localiza a...
Tipo: Presentation
Palavras-chave: Logística; Transporte; Modelo matemático; Fertilizantes; Logistics; Transport; Mathematical model; Fertilizers; Agribusiness.
Ano: 2008
URL: http://purl.umn.edu/119008

Institution of Ground Water Market for Management of Ground Water Resource: A Study from Assam in Northeast India
Provedor de dados: 31
Autores: Dutta,   Mrinal Kanti.
Assam in the north eastern region of India has the endowments to ensure agricultural growth in the sense that the state has huge reserves of ground water in addition to the enormous surface water availability. Returns to both labor and capital in the state are considered high as potentials for exploiting the existing technology are yet largely untapped. As insufficient irrigation infrastructure is identified as a major constraint on exploiting such potentials, investment for expanding irrigation capacity is needed. At the same time, putting necessary institutions in place to ensure that the installed capacity is effectively utilized is also equally important. Compared to relatively larger government irrigation schemes, the privately owned and operated tube...
Tipo: Presentation
Palavras-chave: Irrigation; Utilization; Water market; Efficiency; Institutions; Marketing; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124291

Farm Business Planning in Kazakhstan
Provedor de dados: 31
Autores: Marsh,   Dan.
The agriculture sector in Kazakhstan has undergone rapid change over the last ten years. In the first stage state owned and collective farms were transformed into producer cooperatives owned by their former employees. Central provision of essential inputs was rapidly withdrawn while product prices were initially held down to protect urban consumers. Faced by rising input prices, escalating tax demands and disappearing product markets the cooperatives sold much of their livestock and built up unsustainable levels of debt. In the latest stage of the process, bankruptcy procedures have been used to write off debts and reorganise the cooperatives into private farms. Against this background the paper describes an attempt to assist three farms to draw up...
Tipo: Presentation
Palavras-chave: Farm Management.
Ano: 1999
URL: http://purl.umn.edu/123834

Il quadro normativo sulle denominazioni commerciali dei prodotti ittici nella gestione delle frodi: strumento di gestione o problema irrisolto?
Provedor de dados: 31
Autores: Gaviglio,   Anna; Pirani,   Alberto; Demartini,   Eugenio.
Authors suppose the amounts of fraudulent seafood sales reported in recent years to be somehow correlated to the problems of Italian commercial fish-naming policy. However, given the lack of data and studies, the work has an exploratory nature focusing on three main issues: the seafood labeling policy framework, the evolution of lists of fish species’ trade names and the spread and type of fraudulent sales. According data authors believe that the fish-naming system is improving, however that lack of studies estimating the right amount of diversification in trade names for marine species seems so to be a weakness for a winning policy. Furthermore, seafood retailers seems to assume an important role on fraud management and government should support research...
Tipo: Presentation
Palavras-chave: Fish products; Labeling; Consumer protection; Research perspectives; Agribusiness; Agricultural and Food Policy; International Relations/Trade; L15; Q18; Q22.
Ano: 2012
URL: http://purl.umn.edu/130451

Cooperation And Competition In Tropical North Queensland's Nature-Based Tourism Industry
Provedor de dados: 31
Autores: Huybers,   Twan; Bennett,   Jeffrey W.
In this paper, the initial results of a survey of the strategic business relationships between nature based tourism operators in Tropical North Queensland are presented. While operators in the region cooperate in their collective competition with other tourism destinations, they compete with each other for the business of the tourists who visit the region. These simultaneous cooperative and competitive relationships between tourism businesses define the structure of the region’s tourism industry. The findings in this paper pertain mainly to the areas of cooperation between tourism operators in Tropical North Queensland. The two major areas of cooperation are destination promotion and activities regarding environmental protection.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123667

Managing Herbicide Resistance: Should you Conserve or Exploit your Herbicides?
Provedor de dados: 31
Autores: Giesbertz,   M.; Pannell,   David J.; Abadi,   Amir; Powles,   Stephen B.
Herbicide resistance has become a major problem in dryland agriculture. In Australia this particularly applies to annual ryegrass (Lolium rigidum) which has developed multiple resistance to a wide range of commonly used selective herbicides. Although herbicides are a very cost-effective means of reducing weed density, major changes to their use are required if sustainable weed management is to be achieved. In this study a model of ryegrass population dynamics was used to identify the best integrated weed management strategies and to evaluate changes in the economic payoff when choosing to conserve herbicides rather than exploit them rapidly. A situation of evolving herbicide resistance was simulated for a continuous wheat-lupin rotation and two cropping...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123808

Evaluation of forage shrub plantations as a drought preparedness strategy for landholders in the Central-west of NSW.
Provedor de dados: 31
Autores: Patton,   Dean A.; Milthorpe,   P.L.; Wynne,   M.; Honeysett,   B.M.
The central-west region of NSW accounts for a significant proportion of the states’ livestock numbers and cereal crops but production is constrained mainly by a lack of water available for plant growth. Water availability for this region is characterised by low annual average rainfall, which is non-seasonal and highly variable. Land managers have adopted techniques that minimise the physical and economic impacts of this constraint, for example, moisture retention farming practices and conservative stocking strategies. However, prolonged dry periods still cause significant physical damage and financial hardship to the land resource and the landholder respectively. Despite the increased ability to forecast climate land managers still have to be prepared for...
Tipo: Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123716

Impact of Climate Change on Agricultural Production in Asian Countries: Evidence from Panel Study
Provedor de dados: 31
Autores: Lee,   Jaehyuk; Nadolnyak,   Denis A.; Hartarska,   Valentina M.
We analyze the impact of climate change on agricultural production in 13 Asian countries for 1998-2007 estimating country-level FE panel model using climate variables. Higher summer temperature and rainfall increase production, higher fall temperature decreases it in Southeast Asia, and increase in annual temperature decreases agricultural production in Asian countries.
Tipo: Presentation
Palavras-chave: Climate change; Production; Food security; Asia; Environmental Economics and Policy; Food Security and Poverty; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/119808

Structural Reforms and Agricultural Export Performance: An Empirical Analysis
Provedor de dados: 31
Autores: Susanto,   Dwi; Rosson,   C. Parr, III; Costa,   Rafael F.
This study empirically investigates the effects of structural reforms on bilateral trade flows of agricultural products. Specifically, the study jointly analyzes the impacts of three different reforms including financial reform, trade reform, and agricultural reform on agricultural trade. The results suggest that less restrictive credit constraints, reduced tariff rates, and less government interventions are likely to generate increase in total agricultural exports. The evidence further indicates that the impacts of the reforms vary considerably across less aggregated products as well as across reform forms. The results provide a solid policy foundation for pursuing structural reforms in order to stimulate trade and economic growth, given the fact that the...
Tipo: Presentation
Palavras-chave: Agricultural reform; Agricultural sector; Financial reform; Gravity model; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/119657

Engendering Rural Livelihoods in Malawi through Agricultural Innovation Systems
Provedor de dados: 31
Autores: Mapila,   Mariam A.T.J.; Anesu,   Makina.
The study evaluates the gendered impacts of Agricultural Innovation Systems driven research on livelihood improvements in Africa.  Using a case study from Malawi, the study employs a quasi-experimental research design with propensity score matching to establish a counterfactual and single differencing to measure impact. Results demonstrate that innovation systems driven agricultural research programs impact positively and significantly upon the livelihood outcomes of rural women. However there are differences in benefits accruing to women in rural communities depending on headship of the household with female-headed households benefiting more as compared to women in male-headed households. Policy implications are that; although innovation systems thinking...
Tipo: Presentation
Palavras-chave: Gender equity; Quasi-experimentation; Enabling Rural Innovation; Africa; Agricultural and Food Policy; Community/Rural/Urban Development; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/123359

The Cost Efficiency of Dairy Farms in Japan
Provedor de dados: 31
Autores: Yamamoto,   Yasutaka.
The purpose of this paper is to analyze the cost efficiency of dairy farms in Japan. The overall cost efficiency measure is decomposed into two components (Fare and Grosskopf, 1985): (1) the weak cost efficiency measure; (2) the scale efficiency measure. Linear programming techniques are used in calculating the efficiency measures for a sample of dairy farms in Japan during the year 1989. The study demonstrates an overall cost inefficiency, which is not due to scale inefficiency, but rather to weak cost inefficiency.
Tipo: Presentation
Palavras-chave: Cost efficiency; Dairy; Japan; Livestock Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123743

Financing Constraints and Access to Credit in Post Crisis Environment: Evidence from New Farmers in Alabama
Provedor de dados: 31
Autores: Hartarska,   Valentina M.; Nadolnyak,   Denis A.
We use survey data to study the level of financing constrains faced by new farmers in Alabama post 2008, and identify who got loans. We find that new farmers are financially constrained but not impacted by the crisis. Lending was collateral driven, although lenders also considered profitability and cash flows.
Tipo: Presentation
Palavras-chave: Financing constraints; Access to agricultural credit; New farmers; Agricultural Finance; Financial Economics; Risk and Uncertainty; G31; Q12; Q14.
Ano: 2012
URL: http://purl.umn.edu/119799

The Effect of CAFTA-DR and CBI on Ethanol Production and Trade
Provedor de dados: 31
Autores: Gregorowicz,   Philip; Ligeon,   Carel; Jolly,   Curtis M.
Belize City, Belize 23rd - 27th July, 2007
Tipo: Presentation
Palavras-chave: CAFTA-DR; CBI; Ethanol Production; Trade; Caribbean; Agribusiness; International Relations/Trade; F13; Q17.
Ano: 2009
URL: http://purl.umn.edu/122886

Why are Californian Farmers Adopting more (and Larger) Renewable Energy Operations?
Provedor de dados: 31
Autores: Beckman,   Jayson F.; Xiarchos,   Irene M.
Tipo: Presentation
Palavras-chave: Agribusiness; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124444

Returns to New Technologies in the Australian Beef Industry: On-farm Research versus Off-farm Research
Provedor de dados: 31
Autores: Zhao,   Xueyan; Griffith,   Garry R.; Mullen,   John D.
A multi-sectoral and multi-market model of the Australian beef industry is specified using an equilibrium displacement modelling framework. The model is implemented using average price and quantity data for the period 1991-1997 and market parameter values taken from the literature, derived from theoretical restrictions or from the authors’ subjective judgement. Total returns and the distributions among various industry groups from alternate R&amp;D and promotion investments, which result in 1% shifts in the relevant supply or demand curves, are examined.   In this paper, the implications for farmers from various on-farm R&amp;D investments (genetic research and nutrition research in backgrounding cattle for grain-finishing and in grass-finishing) and...
Tipo: Presentation
Palavras-chave: Agribusiness; Research and Development/Tech Change/Emerging Technologies.
Ano: 2000
URL: http://purl.umn.edu/123749

Determining the Optimal Location for Collocating a Louisiana Sugar Mill and a New Cellulosic Ethanol Plant
Provedor de dados: 31
Autores: Darby,   Paul M.; Mark,   Tyler B.
This paper examines the possibility of collocating a cellulosic ethanol processing plant with certain Louisiana sugar mills, chosen based on their strategic locations and cane grinding capacity. The prospective plants are compared based on transportation costs and overall economic performance.
Tipo: Presentation
Palavras-chave: Cellulosic ethanol; Advanced biofuels; Sugarcane; Energy cane; Bioenergy; Agribusiness; Production Economics; Resource /Energy Economics and Policy; Q16; Q42.
Ano: 2012
URL: http://purl.umn.edu/119787

Estimation of Farm-Forward Regional Economic Impacts for the North Plains Groundwater Conservation District in Texas
Provedor de dados: 31
Autores: Guerrero,   Bridget L.; Dudensing,   Rebekka M.; McCorkle,   Dean A.; Hanselka,   Daniel D.; Hudson,   Darren; Amosson,   Stephen H.
Impacts of alternative agricultural water conservation strategies are being evaluated in the Texas Panhandle.  Stakeholders have expressed concern that all effects need to be accounted for including the regional economy. A methodology was developed to evaluate the effects on the backward and forward-linked processing sectors and differentiated results are presented.
Tipo: Presentation
Palavras-chave: Backward-linked; Forward-linked; IMPLAN; Ogallala Aquifer; Water policy; Resource /Energy Economics and Policy; Q18; Q32; Q38.
Ano: 2012
URL: http://purl.umn.edu/119823

The Economic Value of the Precision Disease Management System for Anthracnose and Botrytis Fruit Rot for the Florida Strawberry Industry
Provedor de dados: 31
Autores: Vorotnikova,   Ekaterina; VanSickle,   John J.; Borisova,   Tatiana.
The objective of this study was to examine the economic benefits associated with precision fungicide application system for Florida strawberry production. Given the weather and disease forecast system developed by the University of Florida researchers (Peres, 2010a , strawberry growers can potentially 1) reduce fungicide application rates during cool and dry conditions without affecting yields, thus reducing production costs; or 2) apply fungicide at the precise time of high disease pressure during warm and wet weather, therefore, decreasing disease development and spread, and increasing the yields and profits.
Tipo: Presentation
Palavras-chave: Fungicide application reduction; Precision disease management system; Strawberry; Effect on yield; Agribusiness; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety; Production Economics; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/119791

Accruals Anomaly in Agriculture Financial Economics
Provedor de dados: 31
Autores: Arthur,   Bruno R.; Katchova,   Ani L.
DO NOT CITE THIS DRAFT. Updated version formally published as: Arthur, B. R., Katchova, A. L. (2015). Accrual Anomaly for Agribusiness Stocks. Agribusiness: an International Journal, 31(3), 372–387.
Tipo: Presentation
Palavras-chave: Stock returns; Financial assets in agriculture; Accrual anomaly; Agricultural Finance; Q14; G11.
Ano: 2012
URL: http://purl.umn.edu/119822

Governments’ Attitudes towards GM Food Crops and Developing World Agriculture
Provedor de dados: 31
Autores: Padolina,   William G.
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy.
Ano: 2002
URL: http://purl.umn.edu/123932

Chinese and U.S. Apple Trade in ASEAN
Provedor de dados: 31
Autores: Luckstead,   Jeff; Devadoss,   Stephen; Mittelhammer,   Ronald C.
We investigate oligopolistic competition between U.S. and Chinese apple exporters in the ASEAN market using strategic trade theory and the NEIO literature.  We also analyze competition in the U.S. and Chinese domestic markets.  U.S. supplies higher quality apples to ASEAN than China, resulting in product differentiation.  The results show that U.S. exporters had a higher markup than Chinese exporters through the 1990s; however, as the share of Chinese apples expanded, the U.S. markup declined and the Chinese markup increased dramatically.  Competitive pricing prevails both in the U.S. and Chinese domestic markets.
Tipo: Presentation
Palavras-chave: Apple Trade; Market Power; ASEAN; Conjectural Elasticity; Industrial Organization; International Relations/Trade; F13; L1.
Ano: 2012
URL: http://purl.umn.edu/124372

The Structure of Production and Investment in Australia's Pastoral Zone
Provedor de dados: 31
Autores: Agbola,   Frank W.
This paper develops a dynamic optimal intertemporal investment model under the adjustment cost hypothesis to analyse the structure of production and investment in Australia's pastoral zone. The dynamic model is applied to pooled cross-sectional and time-series data obtained from ABARE farm surveys for the period 1979 through to 1993. Empirical results provide strong statistical evidence to indicate that quasi-fixity of inputs of labour, capital, sheep numbers and cattle numbers are characteristic of the agricultural sector in the pastoral zone. The results reveal that it takes about two years for labour, a little over three years of capital, a little over two years for sheep flock inventory and cattle herd inventory to adjust toward their long-run optimal...
Tipo: Presentation
Palavras-chave: Optimal intertemporal investment theory; Quasi-fixity of inputs; Adjustment costs; Adjustment cost hypothesis; Australia's pastoral zone; Livestock Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/122327

Most Profitable Use of Irrigation Supplies: A Case Study of A Bundaberg Cane Farm
Provedor de dados: 31
Autores: Brennan,   Lisa E.; Lisson,   Shaun N.; Inman-Bamber,   N. Geoff; Linedale,   Tony.
A range of biophysical and financial factors, including the crop response to available water and the cost of irrigation, significantly impact on the economic benefits from using irrigation. Research tools have been developed in a multi-disciplinary environment to allow for the assessment of the economic benefits associated with using irrigation. This paper adopts the 1996-1997 season in Bundaberg as a case study and develops arguments for best use of limited water based on current economic and biophysical modelling capability. A selection of irrigation ‘options’ were chosen for investigation based on combinations of soil type, allocation, critical fraction of available soil water (FASW) to irrigate, irrigation amount, and age of crop for irrigation...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123787

Using Price Rigidities to Explain Pricing Strategies in the Organic Milk Chain
Provedor de dados: 31
Autores: Hellberg-Bahr,   Anneke; Pfeuffer,   Martin; Spiller,   Achim; Brümmer,   Bernhard.
The stickiness of prices and reasons for price changes are widely discussed in market analyses and marketing theory. Explanations and reasons of rigidities have shown that prices do not change as often in small retail stores and in markets with high concentration (Powers and Powers 2001, Hannan and Berger 1991). For organic products, until now there have been few clear results about pricing strategies and it can be assumed that consumers pay premium prices for organic products with increasing market shares of the sector. Hence the opportunities regarding pricing behaviour and pricing strategies in the organic milk supply chain up to now have not been discussed. This paper strives to close this research gap by examining rigidities in the organic milk market...
Tipo: Presentation
Palavras-chave: Price rigidities; Organic milk; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Production Economics; Productivity Analysis.
Ano: 2011
URL: http://purl.umn.edu/122003

Design and Implementation of Flower Export Consortium in Ceará State, Brazil
Provedor de dados: 31
Autores: da Silva Junior,   Aziz Galvao; Perez,   Ronaldo; Amin,   Daniel; Sabioni Ferreira,   Marjorie A.
The Brazilian presence in international commerce, despite the regional leadership in Latin America and the global importance of Brazil as an emerging economy, is quite limited, reaching only 1% of the world’s total trade. Nevertheless, the agribusiness sector is responsible for half of the country’s export and Brazil is the world leader in sugar, coffee, orange juice, tobacco, soybean and beef export. Export growth is considered to be a key factor for the economic development of the country and many governmental programs are being carried out. The Ministry of Agriculture, Livestock and Food Supply (MAPA), through its Cooperative Department (DENACOOP), has joined these efforts. The DENACOOP export consortia program is focused on building strategic alliance...
Tipo: Presentation
Palavras-chave: Flower production chain; Export consortium; Ceará -Brazil; Agribusiness; International Relations/Trade; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods.
Ano: 2011
URL: http://purl.umn.edu/122024

Forward
Provedor de dados: 31
Autores: Clements,   R.J.
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/124055

Factors influencing Malaysian consumers’ consumption of dairy products
Provedor de dados: 31
Autores: Boniface,   Bonaventure; Umberger,   Wendy J.
Increasing demand for dairy products in Malaysia is driving government initiatives and structural change in the domestic dairy industry in order to increase competitiveness and self-sufficiency. This study endeavours to investigate the drivers of increasing dairy demand by examining the factors influencing Malaysian consumers‟ consumption and perceptions of various types of dairy products. A survey of 435 respondents was conducted and the data were analysed using logit models. The results indicate that demographic variables such as age and ethnicity as well as other attitudinal variables significantly influence consumers‟ increasing consumption of dairy products. Managerial recommendations for the domestic dairy industry are suggested and policy...
Tipo: Presentation
Palavras-chave: Dairy products; Consumers; Milk consumption; Malaysia; Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/124243

Health and Economic Impacts of Mycotoxins in Foods in Latin America and the Caribbean
Provedor de dados: 31
Autores: Jolly,   Pauline E.; Jolly,   Curtis M.
Belize City, Belize 23rd - 27th July, 2007
Tipo: Presentation
Palavras-chave: Mycotoxins; Health; Economic impact; Latin America; Caribbean; Agribusiness; Agricultural and Food Policy; I18; Q18.
Ano: 2009
URL: http://purl.umn.edu/122895

Management of Volatility in the Grain Market
Provedor de dados: 31
Autores: Guenther-Luebbers,   Welf; Henke,   Soren; Theuvsen,   Ludwig.
Food prices have steadily risen since the 1990s, and price were especially volatile in the years 2008 and 2010. This trend has also been reflected in the European grain market, which presents all European companies along the food value chain with new challenges. This paper focuses on the impacts of increased price volatility on the grain market. Furthermore, it describes and evaluates government interventions attempting to reduce this volatility. At the same time, it describes and assesses private management methods of dealing with price volatility. In this article, we provide an opportunity to understand how the European cereals market evolved to reach its present state and suggest future possible price assurance systems, such as insurance for the basic...
Tipo: Presentation
Palavras-chave: Management; Volatility; Grain Market; Risk and Uncertainty; Q 10; Q12; Q14; Q 17; Q 18.
Ano: 2012
URL: http://purl.umn.edu/122548

The Precautionary Principle in Practice: How to Write a Call Option on the Environment
Provedor de dados: 31
Autores: Hertzler,   Greg.
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123660

Imputation of Suppressed CBP Employment Records
Provedor de dados: 31
Autores: Register,   D. Lane; Lambert,   Dayton M.; English,   Burton C.; Jensen,   Kimberly L.; Menard,   R. Jamey; Brown,   Jason P.
Suppression of employment records in the US County Business Patterns (CBP) data sets constrains the detail of new methods and recent advances in the analysis of the geographic distribution of firms and employment. Data sets created by imputation procedures can be purchased, but cost often puts them beyond the reach of many research budgets. Fortunately, methods exist whereby researchers can impute suppressed employment records. A comparison of these procedures is necessary to assess the accuracy and flexibility of each.
Tipo: Presentation
Palavras-chave: Imputation; County Business Pattern data; Research Methods/ Statistical Methods.
Ano: 2012
URL: http://purl.umn.edu/124039

Public and Secret Reserve Prices in Repeated Auctions
Provedor de dados: 31
Autores: Olimov,   Jafar.
I study the effect of secret and public reserve prices on the seller’s revenue. In particular, I analyze the data from eBay auctions on tractors to estimate the extent of this effect.     The analysis helps to explain the following empirical facts from Ebay auctions: multiple relisting of similar items, the use of secret reserve prices, and the convergence of sale prices to buy-it-now prices.
Tipo: Presentation
Palavras-chave: Farm Management; Industrial Organization.
Ano: 2012
URL: http://purl.umn.edu/123953

An Economic Assessment of Water Quality Improvement BMPs for the Eagle Mountain Lake Watershed
Provedor de dados: 31
Autores: Johnson,   Jason L.; Wolfe,   Clint; Waidler,   David.
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124224

China Australia Sheep Research Project
Provedor de dados: 31
Autores: Wurcker,   John.
Tipo: Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 2001
URL: http://purl.umn.edu/124441

Production Risk, Farmer Welfare, and Bt Corn in the Philippines
Provedor de dados: 31
Autores: Sanglestsawai,   Santi; Rejesus,   Roderick M.; Yorobe,   Jose M., Jr.
This article examines the production risk effects and welfare implications of Bt corn adoption in the Philippines by specifically considering the impact of Bt on the mean, variance, and skewness of yields. Assessing the skewness effects of Bt provides further inferences about the downside risk protection of this technology in a developing country context. Stochastic production function estimation is utilized to achieve the study objective, including an approach that allows for examining the skewness effects of Bt within a damage abatement specification. Our results indicate that Bt corn do not have a statistically significant risk-reducing (i.e., variance-reducing) or downside risk-reducing (i.e., skewness-increasing) effect, the main benefit is through...
Tipo: Presentation
Palavras-chave: Bt corn; Damage Abatement; GM crop; Production Risk; Downside risk; Skewness; Stochastic Production Function; Risk and Uncertainty; Q12; Q1.
Ano: 2012
URL: http://purl.umn.edu/124237

Food Safety Regulation and Firm Productivity: Evidence from the French Food Industry
Provedor de dados: 31
Autores: Requillart,   Vincent; Nauges,   Celine; Simioni,   Michel; Bontemps,   Christophe.
The purpose of this article is to assess whether food safety regulations imposed by the European Union in the 2000s may have induced a slow-down in the productivity of firms in the food processing sector. The impact of regulations on costs and productivity has seldom been studied. This article contributes to the literature by measuring productivity change using a panel of French food processing firms for the years 1996 to 2006. To do so, we develop an original iterative testing procedure based on the comparison of the distribution of efficiency scores of a set of firms. Our results confirm that productivity decreased in the poultry processing industry at the time when safety regulation was reinforced.
Tipo: Presentation
Palavras-chave: Total factor productivity; Safety regulation; Food processing sector; Panel data; Non-parametrics; Food Consumption/Nutrition/Food Safety; C14; D24; L66.
Ano: 2012
URL: http://purl.umn.edu/124378

Geographical Analysis of US Green Sector Industry Concentration
Provedor de dados: 31
Autores: Register,   D. Lane; Lambert,   Dayton M.; English,   Burton C.; Jensen,   Kimberly L.; Menard,   R. Jamey; Wilcox,   Michael D.
This paper analyzes the geographic distribution of “green energy” sector clustering in the lower 48 United States using recent developments in industry concentration analysis. Evidence suggests that the ten green energy subsectors and the aggregate of the firms comprising the green energy sector are regionally concentrated. Positive changes in industry concentration from 2002 to 2006 tended to be greatest in non-metropolitan counties, suggesting comparative advantage with respect to site location for the composite of firms making up these sectors.
Tipo: Presentation
Palavras-chave: Agglomeration; Location Quotient; Renewable Energy; Community/Rural/Urban Development; Industrial Organization; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/119742

A Comparison of Traditional and Copula based VaR with Agricultural portfolio
Provedor de dados: 31
Autores: Mandal,   Maitreyi; Lagerkvist,   Carl Johan.
Mean-Variance theory of portfolio construction is still regarded as the main building block of modern portfolio theory. However, many authors have suggested that the mean-variance criterion, conceived by Markowitz (1952), is not optimal for asset allocation, because the investor expected utility function is better proxied by a function that uses higher moments and because returns are distributed in a non-Normal way, being asymmetric and/or leptokurtic, so the mean-variance criterion cannot correctly proxy the expected utility with non-Normal returns. Copulas are a very useful tool to deal with non standard multivariate distribution. Value at Risk (VaR) and Conditional Value at Risk (CVaR) have emerged as a golden measure of risk in recent times. Though...
Tipo: Presentation
Palavras-chave: Portfolio Choice; Downside Risk Protection; Value at risk; Copula; Agricultural Finance; Risk and Uncertainty; C52; G11; Q14.
Ano: 2012
URL: http://purl.umn.edu/124387

Consumer Attitudes to Genetically Modified Crops
Provedor de dados: 31
Autores: Sylvan,   Louise.
In this paper I will discuss consumer attitudes to genetically modified foods, as both President of Consumers International and head of the Australian Consumers Association.
Tipo: Presentation
Palavras-chave: Consumer/Household Economics.
Ano: 2002
URL: http://purl.umn.edu/123930

A Inserção Feminina no Mercado de Trabalho do Agronegócio: Uma Estudo Comparativo da Sadia e da Perdigão
Provedor de dados: 31
Autores: Pereira,   Antonio Nunes; Machado,   Vandresa Lucia; Cipola,   Fabricio Carvalho; Pinheiro,   Claudio Jose; Boas,   Ana Alice Vilas.
Resumo O estudo apresenta uma visão comparativa das práticas de evidenciação, no Balanço Social, dos indicadores sociais relacionados à inserção da mulher nas Empresas Sadia e Perdigão. A análise dos indicadores laborais pode oferecer informações relevantes para investidores e para a sociedade em geral quanto à proteção e ao estímulo do trabalho feminino. O estudo utiliza o banco de dados do Instituto Brasileiro de Análises Sociais e Econômicas, literatura nacional, informações constantes do Balanço Social das Empresas e dados da Pesquisa Mensal de Emprego do Instituto Brasileiro de Geografia e Estatística, no período de 2002 a 2006. Em uma era na qual o “capital humano” se tornou o principal ativo das empresas, estudar os indicadores laborais das mulheres...
Tipo: Presentation
Palavras-chave: Inserção Feminina; Agronegócio; Balanço Social; Women Jobs; Agribusiness; Social Balance; Labor and Human Capital.
Ano: 2008
URL: http://purl.umn.edu/119001

Small is Beautiful? Firm's Size, Prevention &amp; Food Safety.
Provedor de dados: 31
Autores: Rouviere,   Elodie; Soubeyran,   Raphael.
The European General Food Law of 2005 and the newly promulgated FDA Food Safety Modernization Act (FFSMA) of 2010 ask all food operators to implement preventive efforts. In this article, we explore the link between firm’s size and preventive efforts. We show two main results. First, when there is no cross-contamination, small firms will provide higher preventive efforts than large firms. When there is crosscontamination, the effort-size curve may have a "inverted-U" shape. From our results we can argue that when implementing or enforcing food safety regulations, public authorities should consider both firms size and food safety hazard.
Tipo: Presentation
Palavras-chave: Prevention effort; Firm size; Food safety; Agribusiness; Food Consumption/Nutrition/Food Safety; Industrial Organization; Risk and Uncertainty; Q18; L15; L5.
Ano: 2012
URL: http://purl.umn.edu/123410

Validation of a Psychometric Scale to Measure Consumers’ Fears of Modern Food Technologies
Provedor de dados: 31
Autores: Caracciolo,   Francesco; Coppola,   Adele; Verneau,   Fabio.
The main consumer trends in food sector are two: on the one hand there is a growing demand for modernity (functional foods, convenience foods, healthy foods such as low calories and low-sodium foods), on the other hand there is a increasing demands for naturalness (organic foods, natural foods, local products and typical products). Moreover, in recent years consumers’ fears of novel food technologies are well documented and several psychometric scales were tested for the analysis of consumer’s attitude towards new technology. Therefore the ability to identify population segments that have greater or lesser neophobia/neophilia, thus enabling identification of early adopters of innovative products, would be more and more useful. A survey which bore such...
Tipo: Presentation
Palavras-chave: Food technology; Consumer perception; Psychometric scale; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Research and Development/Tech Change/Emerging Technologies.
Ano: 2011
URL: http://purl.umn.edu/122005

Input, Output Technical Efficiencies and Total Factor Productivity of Cereal Production in Tunisia
Provedor de dados: 31
Autores: Dhehibi,   Boubaker; Bahri,   Haithem; Annabi,   Mohamed.
In this paper, farm level technical efficiency of production and its determinants are investigated in a sample of 51 cereal producing farms located in the main cereal production region in Tunisia using a stochastic frontier production model.   Empirical findings show that labor input factor appears with a minimal effect on the production. The hypothesis of constant returns to scale is rejected at the 5% level of significance, and returns to scale were found to be decreasing. Moreover, the estimated coefficients in the technical inefficiency model are also as expected. The estimated coefficients of the instruction level of farmer and the rotation, technical variable, are negatives and statistically significant at 5% level, which indicates their positive...
Tipo: Presentation
Palavras-chave: Technical efficiency; Timmer index; Kopp index; TFP; Cereal farms; Tunisia; Agricultural and Food Policy; Farm Management; Production Economics; Productivity Analysis; Research Methods/ Statistical Methods; C43; O47; Q12.
Ano: 2012
URL: http://purl.umn.edu/122866

EU and World Agricultural Markets: Are They more Integrated after the Fischler Reform?
Provedor de dados: 31
Autores: Mela,   Giulio; Canali,   Gabriele.
This work uses cointegration techniques allowing for structural breaks to assess the extent to which the Fischler reform of the CAP increases price transmission elasticity (PTE) between the world and European corn, wheat, and soybean markets. Results show that the reform increased PTE in the case of corn and wheat, while its impact was negligible for soybeans. However, the long-term relationship (cointegration) between world and European prices can be detected only taking into account – other than the Fischler reform’s structural break – also the fact that world commodity markets were interested, in 2003-04 and 2007-08, by price bubbles. In particular the latter affected the world – European corn price relationship in the ascending phase, while the wheat...
Tipo: Presentation
Palavras-chave: Cointegration; Structural breaks; Agricultural commodity prices; Fischler CAP reform; Risk and Uncertainty; C22; Q02; Q18; O13.
Ano: 2012
URL: http://purl.umn.edu/122480

Forests’ Role in the Fight Against Poverty and for Peace and Prosperity in Asia and the Pacific
Provedor de dados: 31
Autores: Kaimowitz,   David.
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124397

The Interstate Water Trading Regime
Provedor de dados: 31
Autores: Allan,   Jacqueline.
In November last year, a pilot interstate water trading project was approved by the Murray-Darling Basin Ministerial Council. This project allows private diverters along a region of the River Murray to permanently trade high security water from one State to another – until November 1997 this would have been impossible. Under this project, solutions will be developed to complex interstate water trading issues so that water will be able to move to higher value uses; be applied to soils that are more appropriate to irrigation; and be used more efficiently – irrespective of State borders. This will in turn help the irrigation industry in Australia become more economically and environmentally sustainable.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/122330

Impact of Trade Liberalization and World Price Changes in Bangladesh: A Computable General Equilibrium Analysis
Provedor de dados: 31
Autores: Alam,   Mohammad Jahangir; Buysse,   Jeroen; Begum,   Ismat Ara; Nolte,   Stephan; Wailes,   Eric J.; Van Huylenbroeck,   Guido.
The paper analyzes the impact of trade liberalization and changes in world prices of agricultural commodities in Bangladesh using single country CGE model. Since the agricultural sector is sensitive to overall employment, household welfare and food security, the analysis focuses on the changes in agricultural production, consumption, household income and welfare. The results show that trade liberalization increases the welfare of all household groups while world market price increases decrease welfare. It means that although trade liberalization generates a welfare increase for households but this is dependent on the relative level of world commodity prices. Our results are based on the analysis of aggregate household groups, so it may be of future...
Tipo: Presentation
Palavras-chave: Static; CGE; Trade policy; World prices; Agricultural commodities; Bangladesh; Agricultural and Food Policy; Demand and Price Analysis; Food Security and Poverty; International Development; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/123724

Nothing to Declare: Duty-free access to imports from LDCs
Provedor de dados: 31
Autores: Vanzetti,   David; Peters,   Ralf.
Developed countries have agreed to provide duty free and quota free access to imports from LDCs covered by 97 per cent of tariff lines. However, LDCs would like to extend the agreement to 100 per cent coverage, since 3 per cent of tariff lines can cover a substantial proportion of LDC exports. Products of major interest include textiles and clothing and agricultural goods such as rice, oilseeds, sugar and bananas. The potential trade and welfare impacts of expanding the coverage are analysed using a global general equilibrium model. Updated estimates indicate LDCs stand to gain $4.2 billion in additional exports, the bulk of which accrues to Bangladesh, Cambodia and West Africa. A further $1.8 billion increase in exports could be obtained if LDCs had duty...
Tipo: Presentation
Palavras-chave: WTO negotiations; Trade; Tariffs; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/124469

A real-options analysis of wine grape farming in north west Victoria
Provedor de dados: 31
Autores: Seyoum,   Emayenesh; Chan,   Chris.
This paper reports a use of a real-options valuation methodology to analyse wine grape farm investment under price and yield uncertainty. Revenue levels to incentivise entry and exit were calculated for three different sizes of wine grape farms in North West Victoria. The modelling identified lower exit and higher entry triggers than indicated by conventional net present value calculation. The wide gap of estimated indeterminacy in farm investment highlights the intertwined influence of numerous economic factors — cost structure, economies of scale, market volatility, transaction costs, and sunk and salvaged asset valuation. Drawing on these determinants of farm investment and disinvestment, the paper discusses the role of investment incentives in...
Tipo: Presentation
Palavras-chave: Real options; Entry and exit; Wine grape; North West Victoria; Crop Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124446

“Dairy Industry in Bangladesh: Problems and Prospects”
Provedor de dados: 31
Autores: Shamsuddoha,   A.K.; Edwards,   Geoff W.
Abstract Although, dairying is the most ancient occupation established in the rural setting of Bangladesh, its development is unsatisfactory due to several problems. The main problems concern breeding, feeding, management, diseases and marketing. The dairy sector has also not received adequate attention in respect of information and research with present policies and issues. National milk production can only meet 13% of the current milk consumption. The demand for milk is growing at a faster rate than supply because of the rapid increase in population, creating a widening imbalance between demand and supply. There is a need to have knowledge of the existing demand, its growth over time, and the existing supply possibilities. There are also many types of...
Tipo: Presentation
Palavras-chave: Agribusiness; Livestock Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123730

Factors Affecting Producer Participation in State-Sponsored Marketing Programs By Fruit and Vegetable Growers in Tennessee
Provedor de dados: 31
Autores: Davis,   James A.; Velandia,   Margarita M.; Clark,   Christopher D.; Lambert,   Dayton M.; Jensen,   Kimberly L.; Wilcox,   Michael D.; Wszelaki,   Annette.
State programs promoting agricultural products have proliferated in response to increased consumer interest in locally grown foods. Tennessee, for example, currently has two state-sponsored programs promoting Tennessee agricultural products. This study examines the factors associated with fruit and vegetable farmer participation in these programs using mean comparisons and bivariate probit regression. Results suggest that farmer participation in these programs was associated with operation size, percentage of income from farming, percentage of annual sales from fresh produce, and attendance to University Extension educational events. These results should interest individuals attempting to increase producer participation in these types of programs.
Tipo: Presentation
Palavras-chave: State-sponsored marketing program; Fruit and vegetable marketing; Tennessee producer participation; Bivariate probit regression.JEL: Q13; Q18.; Agribusiness; Agricultural and Food Policy; Marketing; Q13; Q18.
Ano: 2012
URL: http://purl.umn.edu/123923

Agricultural Banking and Early Warning Models for the Bank Failures of the Late 2000s Great Recession
Provedor de dados: 31
Autores: Li,   Xiaofei; Escalante,   Cesar L.; Epperson,   James E.; Gunter,   Lewell F.
This paper is designed to validate if the agricultural sector can once again be labeled as an instigator of the late-2000s Great Recession using the early warning models technique. The empirical results indicate that exposure to agribusiness operations does not necessarily enhance a banks’ tendency to fail.
Tipo: Presentation
Palavras-chave: Agricultural Banking; Early warning signals; In-sample accuracy; Out-of-sample forecasting; Agricultural Finance; Research Methods/ Statistical Methods; G21; G32; G33; C01.
Ano: 2012
URL: http://purl.umn.edu/119656

The Impact of Child Obesity News on Household Food Expenditure in the United Kingdom
Provedor de dados: 31
Autores: Silva,   Andres; Garcia,   Marian; Bailey,   Alastair.
The United Kingdom (UK) has one of the highest obesity levels in the world (Mazzocchi et al., 2009). As indicated by the National Health Service (2010), 25% of adults and 17% of children are obese in the UK. This last statistic represents an increase of four points in comparison to 1995. The Government Office for Science (2010) estimated that by 2050, half of the UK population would be obese, with a consequent direct annual cost of £10 billion and an indirect annual cost of £50 billion at today’s prices. This research aims to contribute to the debate on how health-related information impacts household food expenditure and whether this impact varies across income groups and household composition. This study specifically measures the impact of child obesity...
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123526

Analysis of Farming Systems Issues in the Northern Cropping Region of NSW
Provedor de dados: 31
Autores: Farquharson,   Robert J.; Scott,   J. Fiona.
A number of farming systems projects are currently being conducted in the north eastern cropping region of Australia. These are jointly funded by the grains industry and state government R&amp;D agencies, and conducted by the latter with some involvement of private industry. The issues which were the genesis of these projects are basically technological (ie productivity-enhancement) to maintain or improve farm income over time, and environmental to redress natural resource degradation associated with the current system. This paper is concerned with the analysis of results from these projects to provide information which helps grain growers in making decisions. In particular, we aim to consider the issues to be analysed and the characteristics of the...
Tipo: Presentation
Palavras-chave: Farm Management.
Ano: 2000
URL: http://purl.umn.edu/123644

Modelling yield risk measures of major crop plants
Provedor de dados: 31
Autores: Kobus,   Pawel.
The paper deals with the problem of modelling yield risk measures for major crop plants in Poland. Hence, in some cases the gamma distribution offers a better fit to the data than normal distribution, and in addition to linear models, generalized linear models were also used. The research was based on data from Polish FADN, with sample sizes ranging from 416 up to 2300, depending on the crop plant. It was found that models based on the farm level data, can explain on average 20% of variation coefficient unevenness. The most important variables were average yield, type of farming, arable area and land quality. The elimination of the average yield from the models reduced the average determination coefficient to about 9%.
Tipo: Presentation
Palavras-chave: Production risk; Risk measures; Yield distribution; Risk and Uncertainty; Q10; C46.
Ano: 2012
URL: http://purl.umn.edu/122535

Economics of Reduced Water Allocations: Estimating Impacts on the Northern Victorian Dairy Industry
Provedor de dados: 31
Autores: Gyles,   Oliver; Baird,   Catherine A.; Brown,   Stuart.
Water use efficiency data was used to estimate the impact of reducing sales water allocations on a range of irrigated dairy farms categorised according to intensity of water right. The expected deficiency in available water was estimated for each farm category on the basis of historical demand for sales and the potential production loss estimated. The cost of substitution through management options of purchasing 1) water right (with associated sales), 2) temporary sales water, or 3) feed supplements as grain or hay and silage was calculated. Purchase of water right was found to be the cheapest option and the regional transfer volume required estimated at 93 GL of water right valued at A$ 60.7 million. The average transfer requirement was estimated at 31 ML...
Tipo: Presentation
Palavras-chave: Water use efficiency; Water allocations; Industry impact; Water policy; Property rights; Risk management.; Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123810

Impact of Labour Market Policies on Farm Households in the Philippines
Provedor de dados: 31
Autores: Rola-Rubzen,   Maria Fay; Hardaker,   J. Brian.
Tipo: Presentation
Palavras-chave: Farm-household systems; Micro-impacts; Labour market policies; Labor and Human Capital.
Ano: 1999
URL: http://purl.umn.edu/123829

Assessing Consumer Willingness to Pay a Premium for Organic Food Product: Evidence from Ghana
Provedor de dados: 31
Autores: Owusu,   Victor.
This paper examines the willingness of consumers to pay a premium for organic food product with a contingent valuation data from urban Kumasi of Ghana. Consumer’s willingness to pay a premium is estimated with a bivariate Tobit model. The empirical findings indicate that apart from socioeconomic characteristics and consumer perceptions, product attributes tend to influence consumer preferences for organic water melon and lettuce. The estimated mean WTP premium for 1 kilogram of water melon is GH¢0.5554 (US$ 0.4575) and that of organic lettuce is GH¢1.2579 (US$1.0361).
Tipo: Presentation
Palavras-chave: Consumer Perception; Ghana; Organic Foods; Willingness to Pay; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123394

Meating and Milking Global Demand: Stakes for Small-Scale Farmers in Developing Countries
Provedor de dados: 31
Autores: Delgado,   Christopher L.; Rosegrant,   Mark W.; Wada,   Nikolas.
Tipo: Presentation
Palavras-chave: Demand and Price Analysis; Livestock Production/Industries.
Ano: 2003
URL: http://purl.umn.edu/124009

What We Have Learned: A Summary
Provedor de dados: 31
Autores: Radcliffe,   John.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/124481

Water Footprint in Milk Chains in the Central Subhumid and Semiarid Region of Argentina
Provedor de dados: 31
Autores: Manazza,   Jorge F.; Iglesias,   Daniel H.
The high agricultural process of the Argentine humid pampas forces the intensification and relocation of cattle and dairy systems into subhumid and semiarid region to keep their competitiveness. In consequence, there is an increasing water demand scenario in these fragile areas in relation with this productive transformation process. Water footprints of UHT milk and cheese agrifood chain in La Pampa and San Luis provinces have been assessed using Life Cycle Assessment (LCA) methodology, including virtual water indicators. Milk chain of La Pampa presents high self-sufficiency water ratio and high primary production proportion in virtual water exports. Water footprint of San Luis milk chain is highly externalized with a low self-sufficiency water ratio.
Tipo: Presentation
Palavras-chave: Life Cycle Assessment; Milk Agrifood Chain; Virtual Water; Agribusiness; Agricultural and Food Policy; Environmental Economics and Policy; Industrial Organization; Land Economics/Use; Livestock Production/Industries; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/126174

Agricultural Knowledge and Information Systems: A Network Analysis
Provedor de dados: 31
Autores: Kaine,   Geoff; Doyle,   Brendan; Reeve,   Ian; Lees,   Jim.
Röling and others argue that research and extension should not be seen as separate processes involving distinct institutions which must somehow be linked. Rather, scientists, specialists, extension workers, consultants and producers should be seen as participants in a single agricultural knowledge and information system (AKIS). This perspective on research, extension and adoption as activities that occur within a network offers new insights into the way in which technology transfer occurs, and new ideas as to how to increase the rate of adoption of new ideas and techniques in farming. In this study, we use network management theory and applied network analysis to operationalise the concept of an AKIS and to test the relationships between system...
Tipo: Presentation
Palavras-chave: Agricultural extension; Technology transfer; Network analysis.; Research Methods/ Statistical Methods.
Ano: 1999
URL: http://purl.umn.edu/123823

Agricultural Support and Political Mobilization:  Evidence from Andhra Pradesh
Provedor de dados: 31
Autores: Tandon,   Sharad.
Tipo: Presentation
Palavras-chave: International Development.
Ano: 2012
URL: http://purl.umn.edu/124412

The Impact of Risk and Farm Program Design on Cash Rents
Provedor de dados: 31
Autores: Ifft,   Jennifer; Cooper,   Joseph C.; Kuethe,   Todd H.
Tipo: Presentation
Palavras-chave: Agricultural and Food Policy; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/124334

The Role of Underemployment in Employee’s Overall Job Satisfaction: The Alabama Case.
Provedor de dados: 31
Autores: Addy,   Samuel N.; Nzaku,   Kilungu; Ijaz,   Ahmad.
Job satisfaction is an important measure of utility that employees derive from their jobs and is related to various features of the job such as pay, security, intrinsic values of work, working conditions, career growth opportunities, working hours, and the like. This paper analyzes the relationship between underemployment and overall job satisfaction among other personal and job characteristics of the workforce in Alabama using survey data from Alabama workforce development regions. A logistic model is used to analyze the determinants of job satisfaction in Alabama including underemployment. Estimation results show a negative relationship between underemployment and job satisfaction. Personal and work-related attributes such as education, age, work hours,...
Tipo: Presentation
Palavras-chave: Community/Rural/Urban Development; Industrial Organization; Labor and Human Capital.
Ano: 2012
URL: http://purl.umn.edu/119809

Melamine food recalls: Effects of melamine on animal/human health, food safety and economic trade
Provedor de dados: 31
Autores: Badrie,   Neela; Jolly,   Curtis M.; De Leon,   Sonia Y.
Bridgetown, Barbados 6th – 10th July, 2009
Tipo: Presentation
Palavras-chave: Melamine; Health Effects; Food Control; Food Recall; Economic; Tolerable Daily Limits; Health Economics and Policy; I18.
Ano: 2010
URL: http://purl.umn.edu/122662

Price Transmission in the German Sugar Market
Provedor de dados: 31
Autores: Nolte,   Stephan; Natanelov,   Valeri; Buysse,   Jeroen; van Huylenbroeck,   Guido.
The German sugar market is governed by the European Union’s common market organization (CMO). In 2006, the CMO was subject to its first major reform. Among others, the administered price for sugar was reduced by 36%. We use a data set with monthly prices for sugar and sugar containing products to perform a cointegration analysis. Results show that the reduction of the institutional price has led to a reduction of wholesale prices and of retail prices for table sugar. Prices for sugar containing products are barely integrated with the sugar price, though. Some are found to be integrated with the CPI for food and soft drinks. In none of the cases where linear cointegration could not be detected, threshold cointegration could be found.
Tipo: Presentation
Palavras-chave: Sugar; EU’s Common Agricultural Policy; Price Transmission; Co-integration; Demand and Price Analysis; Marketing.
Ano: 2012
URL: http://purl.umn.edu/124351

Strategic Analyses of the National River Linking Project (NRLP) of India Series 5; Proceedings of the Second National Workshop on Strategies Issues in Indian Irrigation
Provedor de dados: 31
Autores: International Water Management Institute (IWMI).
Tipo: Presentation
Palavras-chave: Irrigation management; Institutional reform; Surface irrigation; River basin management; Water transfer; Investment; Irrigation programs; Policy; Water users associations; Groundwater management; Groundwater recharge; Water supply; Drinking water; Watershed management; Crops; Crop Production/Industries; Financial Economics; Institutional and Behavioral Economics; Resource /Energy Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/118413

Revenue Protection for Organic Producers: Too Much or Too Little
Provedor de dados: 31
Autores: Singerman,   Ariel; Hart,   Chad E.; Lence,   Sergio H.
A framework is developed to examine organic crop insurance established by the Risk Management Agency (RMA). Given that RMA links organic and conventional crop prices, the model is calibrated to reflect both markets to illustrate the impacts that pricing has on insurance coverage. Findings indicate that at the 75% coverage level, RMA's fixed price factor implies an effective coverage ranging from 45% to 106% depending on the ratio of planting-time organic to conventional market prices. Results suggest RMA's program is likely to induce adverse selection, because the nominal coverage level is likely to substantially deviate from the effective coverage.
Tipo: Presentation
Palavras-chave: Crop insurance; Organic agriculture; Agricultural and Food Policy; Q18.
Ano: 2012
URL: http://purl.umn.edu/124370

Protection of environmental water within a market-based framework: an examination of legal approaches in Colorado, Alberta and Australia
Provedor de dados: 31
Autores: Owens,   Katherine.
It is uncertain whether market-based water allocation regimes can be successfully deployed to deliver water for environmental needs, with uneven results demonstrated across jurisdictions that have experimented with markets as a regulatory tool. The Paper will compare and evaluate the regulatory and institutional tools adopted in Australia, Colorado and Alberta for environmental water requirements. It will then outline four key lessons that have emerged from the comparative analysis that can inform the design and implementation of market-based water allocation regimes to promote environmental objectives.
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124354

Cow-Calf Operations in the Southeastern United States: An Analysis of Farm Characteristics and Production Risks
Provedor de dados: 31
Autores: Adkins,   Tracey S.; Riley,   John Michael; Little,   Randall D.; Coatney,   Kalyn T.
Beef cattle production in the southeastern United States differs in size, practice, and production type from other U.S. regions.  Smaller, cow-calf type operations dominate in this region because the climate, forage availability, and other land use practices of farmers make this type of cattle operation more ideal for the Southeast. Cow-calf production, particularly small-herd enterprises, does not typically require the level of intense management compared to other beef operations, thus making it more manageable for those with limited time and labor. This research summarizes the current practices and characteristics that define the Southeastern cow-calf operation as it operates under the new challenges of today’s market and operating environment; it also...
Tipo: Presentation
Palavras-chave: Cow-calf; Cattle production; Triangular distributions; Agribusiness; Livestock Production/Industries; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/119757

Forest Product Markets, Forests and Poverty Reduction
Provedor de dados: 31
Autores: Belcher,   Brian M.
There is a new and increasing emphasis on poverty alleviation and livelihoods improvement in forestry, representing both a challenge and an opportunity. This paper briefly reviews the evolution of the ‘livelihoods’ issue, analyses the concept of ‘poverty alleviation’ and discusses means by which forestry can contribute to livelihoods improvement. It focuses on the contributions of forest products and markets, questioning the typical timber vs nontimber dichotomy. The role and the potential of a forest product is determined more by the socioeconomic and environmental context of the production, processing and marketing system than by the physical characteristics of the product itself. This is important as new opportunities arise through increased control of...
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Marketing; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124400

Planning the Sustainable Agro-fuel Supply Chain
Provedor de dados: 31
Autores: Rosa,   Franco.
The agricultural sector is receiving a great deal of attention for topics of general interest as the security, multifunctional activities, alternative uses of crops in food/feed/fuel, reduction in GHG (Green House Gas) emission, LCA (Life Cycle Assessment). The EU policies are directed to implement sustainable local agro-food systems, and the AFSC (agro-fuel supply chain) represent the central issue in planning agricultural commodities to be used for fuel production performed in a space-time dimension. In this paper it is presented a methodology of regional planning the AFSC supported by empirical evidences in the region FVG (Friuli Venezia Giulia). The reference crop is the Mais largely cultivated in this region and now used to satisfy food-feedstock-fuel...
Tipo: Presentation
Palavras-chave: Planning AFSC; Regional development plan; Multifunctional approach; Agri-food supply chain; Simulation; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124130

Integrated water-resources management in a river basin context:  institutional strategies for improving the productivity of agricultural water management; Proceedings of the Regional Workshop, Malang, Indonesia January 15-19, 2001
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Water resource management; River basins; Institutional development; Social aspects; Economic aspects; Water policy; Hydrology; Models; Water allocation; Agricultural and Food Policy; Agricultural Finance; Institutional and Behavioral Economics; Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/118403

Measuring food security: Definitional sensitivity and implications
Provedor de dados: 31
Autores: Bashir,   Muhammad Khalid; Schilizzi,   Steven.
Six methods for measuring food security are identified from the literature. The dietary intake method (DIM) and the food insecurity experienced-based measurement scales (FIEMS), the two most commonly used, were empirically tested using 1152 rural households in the Punjab province of Pakistan. Results show significant differences in the measurement of food insecure households: 22.9% with DIM vs. 4.7% with FIEMS. A slight change in the food security definition resulted in significant differences. With slight definitional changes, 6.5% of the sample households appeared food insecure using DIM and only 1.1% using FIEMS. Given its high definitional sensitivity, food security must be carefully defined according to country specific conditions and should reflect...
Tipo: Presentation
Palavras-chave: Food security; Hunger; Measurement; Vulnerability analysis; Value at risk; Conditional value at risk; Food Security and Poverty.
Ano: 2012
URL: http://purl.umn.edu/124227

ACTION RESEARCH AS A MECHANISM FOR CLIENT-DRIVEN DEVELOPMENT
Provedor de dados: 31
Autores: Massey,   Claire; Hurley,   Evelyn.
The New Zealand dairy industry is viewed, and views itself, as having a progressive approach to scientific research and the acquisition and adoption of technology. It is also generally accepted that, in order to remain competitive in international markets, technological improvement is a continual necessity. In each component of the industry/system - producer (farms), processor (co-operatives, manufacturing), researchers, extensionists/consultants and marketers (NZ Dairy Board, statutory authority) - practitioners deal regularly with issues requiring solution. However each has a different W (world view) and successful outcomes for one are not necessarily so for the others. For producer practitioners the management issue may be one of seeking solutions to...
Tipo: Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123850

Agri-tourism: A modern development in Bahamian agriculture
Provedor de dados: 31
Autores: Hepburn,   Erecia.
Bridgetown, Barbados 6th – 10th July, 2009
Tipo: Presentation
Palavras-chave: Agritourism; Agriculture; The Bahamas; Tourism; Development; Agribusiness; Q13.
Ano: 2010
URL: http://purl.umn.edu/122656

Finding the Stronger Impact among Bribery, Financial Reward, and Religious Attitude: The Insights of Experiment on Environmental Tax Compliance in Indonesia
Provedor de dados: 31
Autores: Iskandar,   Deden Dinar; Wuenscher,   Tobias.
The degradation of environmental quality has been one of the main concerns in Indonesia. The government has mentioned the environmental tax as the instrument of environmental management; however, the primary potential problem will be the issue of compliance. Inspired by the situation in Indonesia, this study is expected to contribute on environmental regulation and tax compliance literatures by examining and comparing the impact of bribery, financial reward, and religious attitude on compliance in a developing country where the bribery prevails. The study employs laboratory experiment approach. The results indicate that bribery has the strongest impact; the presence of bribery significantly worsens the compliance. Financial reward enhances the compliance...
Tipo: Presentation
Palavras-chave: Environmental tax; Compliance; Laboratory experiment; Environmental Economics and Policy; Public Economics.
Ano: 2012
URL: http://purl.umn.edu/124316

Application of nonparametric discriminant analysis  for assessing food safety issues  of Caribbean imports
Provedor de dados: 31
Autores: Abebe,   Asheber; Yin,   Shuxin.
Bridgetown, Barbados 6th-10th July, 2009
Tipo: Presentation
Palavras-chave: Transvariation; Projection pursuit; Misclassification error rate; Food detention; Agribusiness; C38.
Ano: 2010
URL: http://purl.umn.edu/122882

U.S. Net Farm Income, 1913-2012
Provedor de dados: 31
Autores: Lambert,   David K.
Tipo: Presentation
Palavras-chave: Farm Income; Agriculture; Agricultural and Food Policy; Agricultural Finance; Farm Management.
Ano: 2012
URL: http://purl.umn.edu/124506

Economic Analysis of Strategies to Combat HLB in Florida Citrus
Provedor de dados: 31
Autores: Salifu,   Abdul Wahab; Grogan,   Kelly A.; Spreen,   Thomas H.; Roka,   Fritz M.
Tipo: Presentation
Palavras-chave: Citrus greening; Huanglongbing; Asian citrus psyllid; Crop Production/Industries; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119748

Impact of agri‐environmental policies on farming practices and nutrient loading
Provedor de dados: 31
Autores: Laukkanen,   Marita; Nauges,   Celine.
Tipo: Presentation
Palavras-chave: Common Agricultural Policy; Agri‐environmental regulation; Nutrient loading; Panel data; Finland; Environmental Economics and Policy; Farm Management.
Ano: 2012
URL: http://purl.umn.edu/124347

TOTAL FACTOR PRODUCTIVITY AND THE BIO ECONOMY EFFECTS
Provedor de dados: 31
Autores: Zúniga-González,   Carlos Alberto.
Selected Paper prepared for presentation at the International Association of Agricultural Economists (IAAE) Triennial Conference, Foz do Iguaçu, Brazil, 18-24 August, 2012
Tipo: Presentation
Palavras-chave: Bio Economy Total Factor Productivity Growth; Malmquist Index; Data Envelopment Analysis; Bio-Economy; Bio-Ethanol; Productivity Analysis; D: 24; O: 13; O: 47; P: 51; Q: 10.
Ano: 2012
URL: http://purl.umn.edu/122939

Consumer Risk Reduction Behavior of New Brand Purchase
Provedor de dados: 31
Autores: Yonezawa,   Koichi; Richards,   Timothy J.
Tipo: Presentation
Palavras-chave: Agribusiness; Demand and Price Analysis.
Ano: 2012
URL: http://purl.umn.edu/123642

Reallocation of price risk among members
Provedor de dados: 31
Autores: Pedersen,   Michael Friis.
Marketing of milk and meat in Denmark is dominated by two large cooperatives, Arla Foods in the dairy sector and Danish Crown in the pork sector. Members in these cooperatives practically have no possibility for price risk management on their main product. Futures markets for dairy and pork are not utilised, and it is suggested that the reason is prohibitively large basis risk. The events following the global financial crisis suggest increased need for price risk management in Danish agriculture. Since futures markets do not seem to be a viable solution, the paper explores an alternative. Reallocation of price risk among members in marketing cooperatives. Endowing members with a forward contracted share of delivery, and allowing for transfer at a market...
Tipo: Presentation
Palavras-chave: Futures; Hedging; Risk management; Marketing cooperatives; Agribusiness; Risk and Uncertainty; G13; G32; Q13; D61; D8.
Ano: 2012
URL: http://purl.umn.edu/122529

The Livestock Revolution: A Pathway from Poverty?
Provedor de dados: 31
Autores: Fischer,   Tim.
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Livestock Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2003
URL: http://purl.umn.edu/124003

Biofuel do Brasil? - Impact of Multinational Biofuel Mandates on Agri-food Trade
Provedor de dados: 31
Autores: Banse,   Martin; Junker,   Franziska; Prins,   Anne Gerdien; Stehfest,   Elke; Tabeau,   Andrzej A.; Woltjer,   Geert B.; van Meijl,   Hans.
This paper analyzes the consequences of enhanced biofuel production in regions and countries of the world that have announced plans to implement or expand on biofuel policies. The analysis considers not only mandatory blending targets for transportation fuels, but also voluntary ones. The chosen quantitative modeling approach is two-fold: it combines a multi-sectoral economic model (LEITAP) with a spatial bio-physical land use model (IMAGE). This paper adds to existing research by considering biofuel policies in the EU, the US and various other countries with considerable agricultural production and trade, such as Brazil, India and China. Moreover, the combination of the two modeling systems allows for the observation of changes in both economic and...
Tipo: Presentation
Palavras-chave: Biofuel mandates; Land use changes; Greenhouse gas emissions; International Relations/Trade; Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/123838

History, Statics and Options: Transaction Costs in Institutional Change for Water Resources
Provedor de dados: 31
Autores: Challen,   Ray; Schilizzi,   Steven.
Institutions for use of natural resources, including water resources, typically encompass assignments of property rights to various levels of government, private entities and commonproperty organisations. Institutional reform often involves a change in these property rights, such as devolution of property rights from governments to private resource users. In institutional economics it is generally accepted that institutional change occurs to reduce transaction costs incurred in economic exchanges and regulatory actions. In many situations, including reform of institutions for use of water resources, there are two additional parameters that affect, or should affect, decisions for institutional change: (i) constraints arising from institutional history; and...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123793

Institutional Embeddedness in Organic Farming Systems
Provedor de dados: 31
Autores: Gallioto,   Francesco; Paffarini,   Chiara; Musotti,   Francesco; Chiorri,   Massimo.
The aim of this contribution is to put some evidence on the influence of external factors in the farm decision making, often crucial in leading technical and commercial development and in fostering the expression of social and environmental sensitivity. This paper explores the concept of “embeddedness” focusing on the institutional domain that should affect market strategies. By studying the market orientation of 53 organic farms selected in two Italian regions (Emilia Romagna and Marches), the relation between regional origins and business strategies were analysed with the purpose to indirectly assess the role of institutions in promoting the development of Alternative Food Networks.
Tipo: Presentation
Palavras-chave: Agribusiness; Farm Management; Food Consumption/Nutrition/Food Safety.
Ano: 2011
URL: http://purl.umn.edu/122027

PEER-EFFECTS IN OBESITY AMONG PUBLIC SCHOOL CHILDREN: A GRADE-LEVEL ANALYSIS
Provedor de dados: 31
Autores: Asirvatham,   Jebaraj; Nayga,   Rodolfo M., Jr.; Thomsen,   Michael R.
We examine the role of peer effects in childhood obesity outcomes by investigating whether obesity rates among the highest graders in a public school has an effect on obesity rates among younger grades. We use a panel dataset with obesity prevalence measured at the grade level. Our data are from Arkansas public schools. Results provide evidence that changes in the obesity prevalence at the highest grade are associated with changes in obesity prevalence at younger grades. The magnitude of the peer effect depends on the type of school, and we find statistically significant peer effects in both elementary and high schools but not in middle schools. These effects are also larger in high schools than in elementary schools. We use falsification tests to provide...
Tipo: Presentation
Palavras-chave: Peer-effects; Obesity; Childhood obesity; Overweight; Food Consumption/Nutrition/Food Safety; D10; D71; I10; Z13.
Ano: 2012
URL: http://purl.umn.edu/122732

Yield trend estimation in the presence of non-constant technological change and weather effects
Provedor de dados: 31
Autores: Conradt,   Sarah; Bokusheva,   Raushan; Finger,   Robert; Kussaiynov,   Talgat.
The application of yield time series in risk analysis prerequisites the estimation of technological trend which might be present in the data. In this paper, we show that in presence of highly volatile yield time series and non-constant technology, the consideration of the weather effect in the trend equation can seriously improve trend estimation results. We used ordinary least squares (OLS) and MM, a robust estimator. Our empirical analysis is based on weather data as well as farm-level and county-level yield data for a sample of grain-producing farms in Kazakhstan.
Tipo: Presentation
Palavras-chave: Yield detrending; Weather information; Robust trend estimation; Aggregation; Risk and Uncertainty; Q19.
Ano: 2012
URL: http://purl.umn.edu/122541

The value of inter seasonal arbitrage in water markets
Provedor de dados: 31
Autores: Bell,   Rosalyn; Beare,   Stephen.
There is pressure in Australia for water management reform to ensure an efficient allocation of resources between productive uses and to provide adequate conservation of the environment. The establishment of water markets and trade has been seen as the primary mechanism for improving the efficiency of water use in the Southern Murray Darling Basin. However, with the existing trading arrangements, irrigators can only reallocate water within a season. Individuals do not hold property rights that allow them to manage the variability in water demand and supply between seasons. The objective of the study presented in this paper is to establish an order of magnitude for the benefits of property rights that allow for inter-seasonal arbitrage in water markets. A...
Tipo: Presentation
Palavras-chave: Demand and Price Analysis; Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123765

International Agricultural Research on Biofuels: The Way Ahead
Provedor de dados: 31
Autores: Core,   Peter.
Tipo: Presentation
Palavras-chave: Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/124499

A Structural Model of the World Wool Market
Provedor de dados: 31
Autores: Layman,   B.D.
This paper summarises the development, structure and data sources of the Western Australian World Wool Model. The model is a comparative static, partial equilibrium model of the world wool market. The technique used for the model is applied general equilibrium (AGE) modelling. Western Australia is separated from the rest of Australia as a production region. A key feature of the model is that raw wool is broken down into 9 different qualities, which determine the end use of the wool. The construction of a database containing these wool qualities is detailed. Potential uses for the model are outlined, and results are compared and contrasted with earlier structural models of the world wool market. Finally, advantages and disadvantages of the approach taken...
Tipo: Presentation
Palavras-chave: Wool; Value chain modelling; Processing research.; Marketing.
Ano: 1999
URL: http://purl.umn.edu/123691

STRATEGIC OPTIONS FOR ALLEVIATING CONFLICTS OVER WATER IN DRY AREAS
Provedor de dados: 31
Autores: El-Beltagy,   Adel.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123869

Aspects of production in fish farming in Ilha Solteira, Sao Paulo state: viability of developing of public policies
Provedor de dados: 31
Autores: Sabbag,   Omar Jorge; Lima Costa,   Silvia Maria Almeida; Silveira,   Alexandre Ninhaus.
Just follow the poster to be presented at IAAE 2012.
Tipo: Presentation
Palavras-chave: Fish farming; Diagnostic analysis; Regional development.; Agribusiness; Agricultural and Food Policy; Community/Rural/Urban Development.
Ano: 2012
URL: http://purl.umn.edu/123218

Increasing volatility of input costs in the EU agriculture
Provedor de dados: 31
Autores: Himics,   Mihaly; Van Doorslaer,   Benjamin; Ciaian,   Pavel; Shrestha,   Shailesh.
In this paper the impact of possible input cost developments on the EU agriculture is analysed under ceteris paribus conditions. Two scenarios are developed with the partial equilibrium model CAPRI. The scenarios assume symmetric input price changes in positive and negative directions around a projected baseline in year 2020. The magnitude of the input price changes are based on observed volatility. To measure the volatility, the annual time-series of the CoCo database were analysed, which contains input cost estimates for a multitude of agricultural activities and cost categories at the geographical level of the EU countries. Our results suggest that the uncertainty in input cost development has a strong potential to affect commodity market balances and...
Tipo: Presentation
Palavras-chave: Input costs; Volatility; CAPRI; Farm income; Risk and Uncertainty; Q13.
Ano: 2012
URL: http://purl.umn.edu/122531

An economic analysis of food safety issues following the SPS Agreement: Lessons from the Hormones dispute
Provedor de dados: 31
Autores: James,   Sallie.
The long-running feud between the US and the EU was the first to be disputed formally at the WTO. It provides a classic example of how cultural differences with respect to food attributes have the potential to hamper trade and to challenge WTO agreements designed to limit the disruptions, especially when scientific evidence is limited or spurious. After outlining the legal arguments used by the parties to the Hormones dispute, simple economic models are used to represent the EU beef market and effects of the hormonetreated beef ban and its removal under certain conditions. The implications for the practical implementation of the SPS Agreement are then explored.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 1999
URL: http://purl.umn.edu/123674

Impact of climate change on wheat market and food security in Sudan: stochastic approach and CGE model and CGE Model
Provedor de dados: 31
Autores: Sassi,   Maria; Cardaci,   Alberto.
The paper aims at analysing the impact of the likely change in rainfall on food availability and access to food in Sudan. The empirical investigation is based on an integrated approach consisting of a stochastic method and CGE model. The former provides the likely changes in sorghum, millet and wheat productivity and their probability of occurrence according to rainfall predictions based on historical data. These results are at the basis of the shocks simulated in a standard CGE model augmented with a stochastic component. Achievements underline the negative impact on the two dimensions of food security taken into consideration, mainly due to a reduction in cereal supply, a marked cereal inflation pressure and income contraction; the grater negative effect...
Tipo: Presentation
Palavras-chave: Climate change; Food security; Stochastic approach; Cge; Sudan; Environmental Economics and Policy; C68; Q18; Q54.
Ano: 2012
URL: http://purl.umn.edu/124110

DRAFT: NOTES FOR A PANEL PRESENT ATION, DAUPHIN AGRICULTURALSOCIETY, FEBRUARY 2, 1990--"WILL THE FAMILY FARM SURVIVE?"
Provedor de dados: 31
Autores: MacMillan,   James A.
Tipo: Presentation
Palavras-chave: Farm Management; Labor and Human Capital.
Ano: 1990
URL: http://purl.umn.edu/124324

Uomo e montagna tra economia tradizionale e cambiamenti climatici: il caso del Pasubio tra XVIII e XX secolo
Provedor de dados: 31
Autores: Avanzini,   Marco; Salvador,   Isabella; Gios,   Geremia.
Upland population levels are strongly correlated to environmental dynamics such as morphology, exposure and climate. A temperature fall leads to a shortening of the plant growth season, which can lead to lower pasture productivity and thus livestock can spend shorter periods in the mountains. The aim of this research is to correlate natural climate constraints with variation in the grasslands value in a selection of pastures located between 1100 and 1800 m in the Pasubio Massif (Italian Southern Alps, Trento). The correlation of this trend (derived from historical documents) with climatic oscillations in the same area derived from speleothems reveals that the variation in upland value was strictly linked to temperature and climate variations
Tipo: Presentation
Palavras-chave: Mountain; Climate; Pastures; Grasslands; Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124126

The Impact of Food Environment on Branded vs. Private Label Produce Choice
Provedor de dados: 31
Autores: Schroeter,   Christiane; Cai,   Xiaowei.
Over the past two decades, U.S. food retailers are providing more organic private label foods (PLs) which are directly competing with the National Brand (NB) products. From a policy perspective, an increased availability of high-quality PL products might provide consumers with a more affordable way to cover their produce consumption. Using a two-step Heckman selection model, we estimate the impact of purchase information, demographics, and food environment on the purchasing likelihood and expenditure shares of PL organic vs. conventional spinach. Results show that food context, most notably food availability, access, and adult obesity rate, significantly influences organic PL spinach choice.
Tipo: Presentation
Palavras-chave: Brand Loyalty; Quality; Private label; Food Environment; Food Consumption/Nutrition/Food Safety; I18; D12; R23.
Ano: 2012
URL: http://purl.umn.edu/123197

Regional Income Inequality and Economic Growth: A Spatial Econometrics Analysis for Provinces in the Philippines
Provedor de dados: 31
Autores: Pede,   Valerien O.; Sparks,   Adam H.; McKinley,   Justin D.
This paper revisits the inequality-growth relationship using data at the sub-national (provincial) level in the Philippines over the period 1991- 2000. A conditional convergence growth model is considered where the growth of per capita income depends on inequality and other growth factors. The contribution of each province to the overall inequality obtained from the Theil index is considered. Results indicate that inequality has a positive and significant effect on per capita income growth. However, the magnitude of the inequality effect is not stable across regions. Geographically Weighted Regression estimates show that the magnitude of the inequality growth relationship varies over a range of 0.72 to 3.36. Other results are also noteworthy in this study....
Tipo: Presentation
Palavras-chave: Clusters; Growth; Inequality; Spatial econometrics; Community/Rural/Urban Development; Research Methods/ Statistical Methods; R11; R12; O15; C21.
Ano: 2012
URL: http://purl.umn.edu/124402

Production Cost and the Sequential Adoption of Precision Technology
Provedor de dados: 31
Autores: Ebel,   Robert M.; Schimmelpfennig,   David E.
Tipo: Presentation
Palavras-chave: Production cost; Precision agriculture; Technology adoption; Agribusiness; Crop Production/Industries; Farm Management; Production Economics; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/124393

IMPROVING COMPETITIVENESS OF THE AUSTRALIAN SUGAR INDUSTRY BY ANALYSING CANE SUPPLY ARRANGEMENTS ACROSS THE VALUE CHAIN
Provedor de dados: 31
Autores: Brennan,   Lisa E.; Muchow,   Russell C.; Wegener,   Malcolm K.; Higgins,   Andrew J.
The term “value chain” describes the collection of activities that are performed to design, produce, market, deliver and support a product. The Australian sugar industry value chain has a number of distinct stages involved in the transformation of the cane crop into raw and refined sugar and other manufactured products. These stages include production, processing and distribution functions. Despite its linear direction, a critically important feature of the sugar industry value chain is that it is not a collection of independent activities but a system of interdependent activities. In the Australian sugar industry, there remains a significant degree of segregation in the organisation of growing, milling, and marketing activities, despite the fact that...
Tipo: Presentation
Palavras-chave: Crop Production/Industries; Demand and Price Analysis.
Ano: 1999
URL: http://purl.umn.edu/123788

The Road to Johannesburg: Mobilizing Agricultural Science for Sustainable Development
Provedor de dados: 31
Autores: Johnson,   Ian.
Tipo: Presentation
Palavras-chave: International Development.
Ano: 2001
URL: http://purl.umn.edu/124430

29th Annual Conference - Australian Agricultural Economics Society, Armidale, 12-14 February 1985
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1985
URL: http://purl.umn.edu/118913

Expenditure response to increases in in-kind transfers: Evidence from the Supplemental Nutrition Assistance Program
Provedor de dados: 31
Autores: Beatty,   Timothy K.M.; Tuttle,   Charlotte.
This is the 50,000th paper submitted to AgEcon Search!
Tipo: Presentation
Palavras-chave: Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Food Security and Poverty.
Ano: 2012
URL: http://purl.umn.edu/122873

RESEARCH PRIORITY-SETTING IN PAPUA NEW GUINEA: POLICIES, METHODS AND PRACTICALITIES
Provedor de dados: 31
Autores: Omuru,   Eric; Kingwell,   Ross S.
Agricultural research priority-setting at best promotes the effective and efficient use of scarce research resources. This paper reviews firstly the priority-setting methods used in Papua New Guinea for agricultural R&amp;D and examines the practicalities of implementing these and other methods. Secondly, this paper reports on key factors affecting the strategic directions for agricultural R&amp;D in Papua New Guinea. These factors include:(i) the long term trends in international crop prices; (ii) long-term trends in crop production by sector (plantations or smallholders); (iii) the cost of production by sector and its effects on the long-term economic sectoral sustainability; and (iv) the potential impact of pests and diseases. Related issues of research...
Tipo: Presentation
Palavras-chave: Research and development; Research priority-setting; Papua New Guinea; Agricultural and Food Policy; Research and Development/Tech Change/Emerging Technologies.
Ano: 2000
URL: http://purl.umn.edu/123714

Meeting China’s Demands for Imported Wood and Wood Fibre
Provedor de dados: 31
Autores: Midgley,   Stephen.
China has developed a large, flourishing and rapidly modernising wood and wood fibre industry. China consumes an estimated 365 million m3 (roundwood equivalent) of wood and wood fibre annually and relies heavily upon imports. These imports increased nearly 10-fold between 1996 and 2004 to 106 million m3, making China the world’s largest importer of forest and wood products. As China enjoys substantial economic growth, buoyant housing construction and improving living standards, it is likely that imports will continue to expand. Wood and wood fibre imports for 2010 are estimated to be about 120 million m3. This growth offers opportunities and challenges for suppliers of raw materials and services. The high demand for wood has resulted in unscrupulous...
Tipo: Presentation
Palavras-chave: Demand and Price Analysis; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124409

VERTICAL PRICE TRANSMISSION IN DIFFERENTIATED PRODUCT MARKETS:  A DISAGGREGATED STUDY FOR MILK AND BUTTER
Provedor de dados: 31
Autores: Loy,   Jens-Peter; Holm,   Thore; Steinhagen,   Carsten.
Tipo: Presentation
Palavras-chave: Vertical Price Transmission; Threshold Error Correction Model; Dairy Products; Brands; Retail Market; Germany; Agribusiness; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Marketing; C32; D21; L11; L81.
Ano: 2012
URL: http://purl.umn.edu/123284

Analysis of Fruit Consumption in the U.S. with a Quadratic AIDS Model
Provedor de dados: 31
Autores: Mekonnen,   Dawit Kelemework; Huang,   Chung L.; Fonsah,   Esendugue Greg.
The Quadratic AIDS model was estimated to analyze the U.S. fruit consumption using annual per capita consumption data and prices for a demand system consisting of fresh fruit, fruit juice and other processed fruit.  All Marshallian own price elasticities are found to be negative and the demand system is dominated by complementarity relationships. Both own and cross price Marshallian elasticities are less than one. Fruit juices are found to be expenditure elastic conditional on the total expenditure on fruits while fresh fruits and other processed fruits are found to be expenditure inelastic. However, fresh fruit is close to being unitary expenditure elastic. After allowing for curvature in the Engel function, U.S. fresh fruit demand is found to be more...
Tipo: Presentation
Palavras-chave: Demand estimation; U.S fruit consumption; Quadratic AIDS; AIDS; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Marketing.
Ano: 2012
URL: http://purl.umn.edu/119767

The importance of tree cover and neighbourhood parks in determining urban property values
Provedor de dados: 31
Autores: Pandit,   Ram; Polyakov,   Maksym; Sadler,   Rohan.
This paper presents a spatially explicit analysis of the contribution of urban trees and parks to residential property values. We estimated the effects of structural, neighbourhood, and environmental variables, including tree cover, on sale price of single-family homes in Perth using a generalized spatial two-stage least-squares model. The spatial model results indicate that, among other structural and neighbourhood variables, the proportion of tree cover on street verges (public space) and the extent and proximity of neighbourhood parks attract significant price premiums in the Perth housing market. However, we failed to find any evidence of impact of the tree cover on property (private space) on its sale price. Further, we find that the parameter...
Tipo: Presentation
Palavras-chave: Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124357

Russian diet and health choices: An empirical study applying Grossman’s health investment model
Provedor de dados: 31
Autores: Burggraf,   Christine; Brosig,   Stephan; Glauben,   Thomas; Teuber,   Ramona.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123983

Discrete Choice Modeling of Consumer Preferences for Sustainably Produced Steak and Apples
Provedor de dados: 31
Autores: Sackett,   Hillary M.; Shupp,   Robert S.; Tonsor,   Glynn T.
"Sustainably produced" food labels have rapidly grown in popularity over the past decade (Batte 2011). Moreover, because there is no government agency overseeing certification of these production methods, consumers are generally confused about the production attributes that may or may not be present in a sustainable food system. This paper analyzes data from a hypothetical choice experiment to better understand consumer purchasing behavior when faced with competing food production attributes such as "organic" and "local". We seek to estimate preferences for "sustainably produced" food products and determine how they may be affected by varying degrees of information about sustainable agricultural systems. Additionally, the willingness to pay measurements...
Tipo: Presentation
Palavras-chave: Sustainably Produced Food; Choice Experiment; Consumer Preferences; Food Consumption/Nutrition/Food Safety; Q01; Q13; Q11.
Ano: 2012
URL: http://purl.umn.edu/123517

The Contribution of Agriculture to the National Economy of New Zealand
Provedor de dados: 31
Autores: Johnson,   Robin.
The agricultural sector tends to get a bad press and low priority from NZ Treasury due to the falling share of GDP. On the other hand, the agricultural sector in NZ shows up highest in the OECD total factor productivity studies! Is not the efficient use of resources the main factor Treasury should be taking into account and not the declining share of GDP? Further, is there some economic truth in the argument that production activities are the basis of the economy and are needed to create the real wealth for the rest of the economy? Is there some point where the service economy falls in on itself and the proliferation of service jobs cannot feed on itself for ever? This paper will try to assess the place of agriculture in a strategic plan for future growth...
Tipo: Presentation
Palavras-chave: Productivity Analysis.
Ano: 1999
URL: http://purl.umn.edu/123821

Economic Impact of the 32nd Annual Peter Anderson Arts and Crafts Festival, Ocean Springs, Mississippi
Provedor de dados: 31
Autores: Myles,   Albert E.; Carter,   Rachael.
Evaluating the Economic Impact of Festivals and Special Events: Lessons From the 32st Annual Peter Anderson Arts and Crafts Festival in  Ocean Springs, Mississippi  Background:  Festivals are an integral part of the economies of most communities in Mississippi.  The economic benefits of festivals can be assigned a dollar value, but no amount of money will accurately reflect the personal and social benefits of these events.  Festivals can increase tourism in the area. These events not only bring outside revenue to the community, but they allow even the smallest towns to celebrate and capitalize on the unique aspects of their area.  As budgets tighten in small communities economic and community development entities are constantly working to improve their...
Tipo: Presentation
Palavras-chave: Economic Impact; Tourism; Community Development; Community/Rural/Urban Development.
Ano: 2011
URL: http://purl.umn.edu/119050

Foreword
Provedor de dados: 31
Autores: Andrew,   Neil.
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124396

Mapping the regional benefits and costs of strategies for  controlling dryland salinity
Provedor de dados: 31
Autores: van Bueren,   Martin; Pannell,   David J.; Hodgson,   G.
Hydrologists predict that salinity in the agricultural region of Western Australia will eventually affect an average of 30 percent of the landscape if nothing is done to reduce current levels of recharge. The scale of tree planting and other works thought to be required for controlling salinity represent a radical departure from the traditional agricultural system practised in WA. The objective of the research presented in this paper was to assess whether a large investment in salinity control is warranted at a regional level and, if so, who are the winners and losers. A geographic information system (GIS), together with maps of predicted salinity, were used to facilitate the economic analysis. The GIS served as a systematic way of identifying and...
Tipo: Presentation
Palavras-chave: Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123734

The effect of forest land use on the cost of drinking water supply: A spatial econometric analysis
Provedor de dados: 31
Autores: Abildtrup,   Jens; Garcia,   Serge; Stenger,   Anne.
Forest land use is often associated with the protection of water resources from contamination and the reduced cost of drinking water supply. This study attempted to measure the value of the forest on the quality of water resources from a contingent market, namely drinking water supply, by estimating variations in drinking water costs as a function of variations in land uses. Spatial correlations were taken into account because of the use of different geographical scales (i.e., water service area and land uses) and the potential existence of organizational and technological spillovers between water services. We found a significant negative effect of forest land use on water costs. We found no evidence of spatial spillovers concerning the management regime...
Tipo: Presentation
Palavras-chave: Water quality; Land uses; Forest; Water supply service; Spatial spillovers; Demand and Price Analysis; Land Economics/Use; Resource /Energy Economics and Policy; C21; Q23; Q25; R14.
Ano: 2011
URL: http://purl.umn.edu/120385

Sustaining Fish as a Food Supply
Provedor de dados: 31
Autores: Fischer,   Tim.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/124059

Analysis of Spatial Variation in Flood Risk Perception
Provedor de dados: 31
Autores: Atreya,   Ajita; Susana,   Ferreira.
We use hedonic property models to estimate the spatial variation in flood risk in the city of Albany, GA. In addition to knowing whether a property is in the floodplain, we have a unique dataset with actual inundation maps from tropical storm Alberto that hit Albany in 1994. In the absence of information on the structural damages caused by a flood, having information on the actual inundated area can be useful to tease out information effect of a new flood from potential reconstruction cost. We find that the discount in actually inundated properties is larger which supports our hypothesis that homeowners respond better to what they have visualized (“seeing is believing”) and also the potential reconstruction cost in addition to information effect is...
Tipo: Presentation
Palavras-chave: Flood Risk; Inundation; Spatial; Discount; Environmental Economics and Policy; Land Economics/Use; Q; R.
Ano: 2012
URL: http://purl.umn.edu/119738

Hierarquizacao dos agropolos cearenses segundo o indice de degradacao ambiental
Provedor de dados: 31
Autores: Lima,   Joilson Silva; Cruz,   Carlos Eduardo Braga; Brito,   Ana Vladia Da Costa; Farias,   Renata Maria De Oliveira; Mayorga,   Maria Irles De Oliveira.
O presente estudo buscou hierarquizar os agropolos do Ceará segundo o seu índice de degradação ambiental. Foram utilizados dados secundários referentes aos municípios cearenses agrupados em agropolos. Foi identificado um conjunto de causas do fenômeno definido a partir de literatura especializada. Estas causas foram representadas por indicadores agrupados em três aspectos sendo 10 econômicos, 6 sociais e 6 ambientais. Foram construídos índices de degradação para cada aspecto. Os agropolos Inhamuns Norte, Cariri Oeste e Sertão de Canindé foram os mais susceptíveis à degradação quando analisados os três aspectos simultaneamente e devem ser priorizados pelas políticas ambientais. Alguns agropolos demandam medidas direcionadas no processo de mitigação da...
Tipo: Presentation
Palavras-chave: Degradação; Meio ambiente; Desenvolvimento sustentável; Degradation; Environment; Sustainable development; Environmental Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/119150

ESTIMATING THE BENEFITS OF BIODIVERSITY PROTECTION
Provedor de dados: 31
Autores: Bennett,   Jeffrey W.
What are the benefits of biodiversity protection? Why should those benefits be estimated? When should they be estimated … now or across future generations? Where should the benefits be estimated … locally, nationally or internationally? And, of course, how can they be estimated, if at all? This sequence of questions forms the basis of this paper. The specific benefits associated with the provision of biodiversity protection are firstly defined. The role of benefit estimation in the process of making decisions regarding the future use of ecosystem resources is then briefly reviewed noting the importance of biodiversity benefits in that process. The “extent of the market” for biodiversity protection is considered with respect to the beneficiaries across both...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123767

The Structure and Profitability of Organic Field Crop Production: The Case of Wheat
Provedor de dados: 31
Autores: McBride,   William D.; Greene,   Catherine R.; Ali,   Mir B.; Foreman,   Linda F.
Results from long-term experimental trials suggest that similar yields and lower costs are possible from organic compared with conventional field crop production, but there is little information about the relative costs and returns on commercial farms. This study examines the structure and profitability of commercial wheat production using a nationwide survey of wheat producers for 2009 that includes a targeted sample of organic growers. Treatment-effect models were specified to isolate the impact of choosing the organic approach on various levels of wheat production costs. Average organic wheat yields were much lower than for conventional wheat, but per acre operating plus capital costs were also lower. Estimated operating costs per bushel for organic...
Tipo: Presentation
Palavras-chave: Wheat; Organic; Production costs; Profitability; Crop Production/Industries; Farm Management; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/123835

Size and Distribution of Research Benefits in the Australian Dairy Industry
Provedor de dados: 31
Autores: Liu,   Esther; Tarrant,   Katherine A.; Ho,   Christie K.M.; Malcolm,   Bill; Griffith,   Garry R.
An equilibrium displacement model of the Australian dairy industry is being developed for estimating the net benefits from dairy research undertaken by DPI Victoria. In this initial version, the dairy industry is represented by a system of aggregate demand and supply relationships for two input sectors, raw milk and milk processing inputs, and three output sectors, export and domestic manufactured milk and domestic fluid milk. Quantities and prices are calibrated in terms of milk equivalents. The vertical and horizontal disaggregation of the industry in the model enables the distribution of benefits from farmers to consumers to be assessed. The results for a 1% hypothetical shift in the supply curve in the farm and processing sectors are presented....
Tipo: Presentation
Palavras-chave: Australian dairy industry; Research evaluation; Equilibrium displacement model; Livestock Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/124326

CULTIVATING PEACE
Provedor de dados: 31
Autores: de Soysa,   Indra.
Tipo: Presentation
Palavras-chave: Public Economics.
Ano: 2000
URL: http://purl.umn.edu/123866

Transforming Lives with Livestock-based Agribusiness
Provedor de dados: 31
Autores: Waldron,   Scott A.; Brown,   Colin G.; Longworth,   John W.
This paper is concerned with improving the livelihoods of rural households in China — especially those involved in ruminant livestock production — in the context of market-oriented reform. Two broad categories of household are considered — diversified households and specialised households. Livelihoods are largely determined first, by the way the households interface with the industries or industry in which they are involved and secondly, by the development paths of these industries. Traditionally, the dominant Chinese approach to industry development is policy rather than market driven. Interventionist policies are introduced that target the construction of production bases with the aim of increasing physical output. At a later stage, attention turns to...
Tipo: Presentation
Palavras-chave: Agribusiness; Livestock Production/Industries.
Ano: 2003
URL: http://purl.umn.edu/124014

Effects of Increasing Agricultural Productivity: A Computable General Equilibrium Analysis for Sri Lanka
Provedor de dados: 31
Autores: Gunawardena,   Aruni.
This paper provides a quantitative assessment of the likely economy-wide impacts of agricultural productivity improvements in Sri Lanka. A static multi sector Computable General Equilibrium (CGE) model of the Sri Lankan economy using the input-output table for year 2000 is employed highlighting the agricultural sector and its interactions with other production sectors in the economy. The results indicate that increasing agricultural productivity leads to positive economic benefits. However, productivity improvements would lead to reduction in agricultural employment, which in turn may affect the real income of households in agricultural provinces in the short run.
Tipo: Presentation
Palavras-chave: Multi sector CGE model; Productivity; Productivity Analysis.
Ano: 2012
URL: http://purl.umn.edu/124313

Feed versus Food: The Future Challenge and Balance for Farming
Provedor de dados: 31
Autores: Zhou,   Zhang-Yue.
Demand for livestock products in the past three decades has increased rapidly, especially in developing countries. This increase has resulted in, and will continue to cause, increased demand for livestock feed. This paper examines existing projections of global feed demand and supply with an emphasis on China. It first presents the emerging trends in demand for feed and food, followed by global perspectives of feed demand and supply. It then highlights the challenges facing future farming in its endeavour to meet the increasing demand for feed. Finally, the paper sheds light on whether the livestock revolution will offer much opportunity to farmers, especially small farmers in the developing countries and those at home in Australia.
Tipo: Presentation
Palavras-chave: Crop Production/Industries; Livestock Production/Industries.
Ano: 2003
URL: http://purl.umn.edu/124016

Choice of Optimal Planting and Marketing Decisions for Fresh Vegetable Producers: A Mathematical Programming Approach
Provedor de dados: 31
Autores: Vassalos,   Michael; Dillon,   Carl R.; Coolong,   Tim.
This study combines whole farm economic analysis with biophysical simulation techniques in order to achieve a twofold objective. First, the study seeks to develop a multiple enterprise vegetable farm model with a production and marketing decision interface and, second, to determine optimal production practices for Kentucky vegetable growers. Three vegetable crops are examined: tomatoes, bell peppers and sweet corn. The findings indicate that the risk associated with vegetable production can be significantly mitigated with diversification of production mix and with a greater number of transplanting dates. However, this reduction in risk comes at a high cost in terms of expected net returns.
Tipo: Presentation
Palavras-chave: Vegetable production; Mean-variance; Biophysical simulation; Farm management; Farm Management; C61; C63; D81.
Ano: 2012
URL: http://purl.umn.edu/120016

The Beauty of the Commons? Consumers’ participation in Food Community Networks
Provedor de dados: 31
Autores: Cembalo,   Luigi; Lombardi,   Alessia; Pascucci,   Stefano; Dentoni,   Domenico; Migliore,   Giuseppina; Verneau,   Fabio; Schifani,   Giorgio.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123531

Fragmentation of Agricultural Land Parcels
Provedor de dados: 31
Autores: Neal,   Kalyn; Doye,   Damona G.; Brorsen,   B. Wade.
This study seeks to take fragmentation research in a new direction by looking at exurban sprawl and fragmentation of ownership. The primary objective of this study is to identify the location and magnitude of fragmentation of agricultural land parcels sold in Oklahoma. This was accomplished by estimating two different models. The first model regressed a polynomial in time to determine whether or not fragmentation has been increasing over time. While it was hypothesized that parcel size was decreasing, this was not found to be the case. Over the 40 years of data, parcel size was found to only have decreased by one acre. The purpose of the second model was to verify whether or not a location premium exists for small parcels. It was found that a location...
Tipo: Presentation
Palavras-chave: Fragmentation; Land values; Parcel size; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/119774

Australian Water Policy: Options for the Future
Provedor de dados: 31
Autores: Turnbull,   Malcolm.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/124477

Forestry in Agriculture: The Vision of Landcare
Provedor de dados: 31
Autores: Garrity,   Dennis P.
Australia is a vast, dry continent that faces huge challenges in reversing its land degradation processes to achieve a sustainable future. Many of these challenges are similar to those in much of the developing world. Australia is forthrightly tackling them with innovative solutions, and has become a global leader in the science and practice of agroforestry: the integration of trees into farming landscapes to enhance farm productivity, protect the environment and revitalise farming communities. Many of the greatest environmental problems (soil erosion, salinisation, declining soil productivity, fire, biodiversity loss) turn out to be a commercial opportunity when a farmer considers agroforestry in addressing them. Australia is fortunate in having developed...
Tipo: Presentation
Palavras-chave: Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124408

Wildfire Hazards: An Analysis of Duration, Cost, and Size
Provedor de dados: 31
Autores: Bayham,   Jude; Yoder,   Jonathan K.
Wildfires are managed in a complex dynamic environment where suppression effort, environmental, and geographic characteristics all influence wildfire outcomes.  Suppression effort is largely driven by threats to values at risk.  We develop a stochastic dynamic programming model of wildfire suppression to show that under certain conditions, suppression effort may be diverted from overall containment in order to protect specific values at risk.  We then estimate a trivariate hazard model to determine the impact of threatened structures on three important wildfire outcomes: wildfire duration, size, and suppression costs.  Our results suggest that expected wildfire duration and size increase when residential structures and outbuildings become threatened.
Tipo: Presentation
Palavras-chave: Wildfire Suppression; Dynamic Program; Hazard Model; Frailty Model; Values at Risk; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/122583

The Adoption of Quality Standards in Food SMEs: A Network Approach
Provedor de dados: 31
Autores: Abdirahman,   Zam-Zam; Sauvee,   Loic.
The contemporary agrifood sectors have witnessed a rapid increase in the use of intangibles, i.e. inputs built upon information, knowledge and communication assets. Consequently firms, in their move towards competitiveness, try to innovate in line with these trends. Innovations in agrifood sectors were traditionally focused around new products and new technologies, and often seen as incremental. Innovations based upon intangibles need a broader view of what is innovation, especially in the context of food SMEs. Indeed food SMEs, which roles in the structuration and dynamism of the food economy in Europe is crucial, have at the same time difficulties and limitations in their innovativeness capacity for intangibles. The main objective of the communication is...
Tipo: Presentation
Palavras-chave: Agribusiness; Food Consumption/Nutrition/Food Safety; Food Security and Poverty.
Ano: 2011
URL: http://purl.umn.edu/122026

The Cost and Trade Impacts of Environmental Regulations: Effluent Controls and the New Zealand Dairy Sector
Provedor de dados: 31
Autores: Cassells,   Sue M.; Meister,   Anton D.; Rae,   Allan N.
In New Zealand the Resource Management Act 1991 has put standards in place regarding surface and ground water quality. Nitrogen leaching from dairy effluent compromises these standards; consequently the nation-wide aim is to have all dairy farms operating land-based effluent disposal. An estimate has been made of the cost of this to the New Zealand dairy sector. An Applied General Equilibrium approach (GTAP) is used to look at the possible impact of these additional production costs on New Zealand’s dairy export trade. This analysis is conducted under two scenarios, the first being that New Zealand acts unilaterally in imposing water quality regulations. The second scenario assumes that New Zealand’s three main dairy export competitors, the EU, Australia,...
Tipo: Presentation
Palavras-chave: Agribusiness; Environmental Economics and Policy; International Relations/Trade.
Ano: 2000
URL: http://purl.umn.edu/123618

Which factors drive which volatility in the grain sector?
Provedor de dados: 31
Autores: Ott,   Herve.
The present paper attempts to find empirical evidence on volatility in the grain sector (wheat, corn and soybean). The first challenge is to measure volatility. Intra-year volatility, inter-year volatility in level and return, also conditional volatility are defined and then calculated. The second challenge is to determine which factors impact volatility. The results show that depending on how volatility is measured, factors driving volatility are very different regarding their quantitative importance. Low stock to use ratio drives up mostly intra-year volatility but only moderately inter-year volatility and has almost no impact on conditional volatility. In contrast, a well functioning international market (trade flows without restriction) lowers...
Tipo: Presentation
Palavras-chave: Volatility; Agricultural commodities; Risk and Uncertainty; C26; C32; Q11.
Ano: 2012
URL: http://purl.umn.edu/122486

Demand Reduction from Plain and Pictorial Cigarette Warning Labels: Evidence from Experimental Auctions
Provedor de dados: 31
Autores: Rousu,   Matthew C.; Thrasher,   James F.
Tipo: Presentation
Palavras-chave: Health Economics and Policy; Institutional and Behavioral Economics.
Ano: 2012
URL: http://purl.umn.edu/123708

Impact of the National School Lunch Program on Children’s Food Security
Provedor de dados: 31
Autores: Gao,   Xiang; Ishdorj,   Ariun; Higgins,   Lindsey M.
Tipo: Presentation
Palavras-chave: National School Lunch; Food Insecurity; Ordered Probit; Instrumental Variables; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Health Economics and Policy; I18; I38; P46; Q18; R28.
Ano: 2012
URL: http://purl.umn.edu/119778

Improving land-use modelling within CGE to assess forest-based mitigation potential and costs.
Provedor de dados: 31
Autores: Michetti,   Melania; Parrado,   Ramiro.
We present a computable general equilibrium model properly modified to analyse the potential role of the European forestry sector within climate mitigation. Improvements on database and modelling frameworks allow accounting for land heterogeneity across and within regions and for land transfers between agriculture, grazing, and forestry. The forestry sector has been modified to track carbon mitigation potential from both intensive and extensive forest margins, which have been calibrated according to a forest sectoral model. Two sets of climate policies are simulated. In a first scenario, Europe is assumed to commit unilaterally to reduce CO2 emissions of 20% and 30%, by 2020. In a second scenario, in addition to the emissions quotas, progressively higher...
Tipo: Presentation
Palavras-chave: Climate Change; Climate Mitigation; General Equilibrium Modelling; Forestry; Land Economics/Use; D58; Q23; Q54; Q58.
Ano: 2012
URL: http://purl.umn.edu/124380

BIOLOGICAL INNOVATION AND AMERICAN AGRICULTURAL DEVELOPMENT
Provedor de dados: 31
Autores: Olmstead,   Alan L.
Tipo: Presentation
Palavras-chave: International Development.
Ano: 1999
URL: http://purl.umn.edu/124504

Effects of Fluid Milk Advertising in Taiwan
Provedor de dados: 31
Autores: Hsu,   Jane Lu; Liu,   Gary Shang-Min.
This study utilized the cluster analysis to examine effectiveness of fluid milk advertising in Taiwan. Consumers with different perceptions of advertising were grouped into three clusters. The “high-perception” cluster consisted of larger percentage of women at ages 26 to 35, with higher household income, and living in smaller households. The “low-perception” cluster consisted of more male, older people, with lower household income, and living in larger households. Consumers who were more sensitive to fluid milk advertising tended to consume more fluid milk after perceiving advertising.
Tipo: Presentation
Palavras-chave: Milk advertising; Consumer perceptions; Livestock Production/Industries; Marketing.
Ano: 2000
URL: http://purl.umn.edu/123694

Experimental examination of land investment decisions with volatile returns   A comparison between Kazakhstani and German farmers
Provedor de dados: 31
Autores: Tubetov,   Dulat; Maart,   Syster Christin; Musshoff,   Oliver.
Kazakhstan and Germany have different development levels of the agricultural sector. One of the explanations for this fact might be the different investment behavior of farmers in the two countries. In this study, we experimentally compare the investment behavior of farmers in the two countries in a farmland investment treatment and a coin tossing game investment treatment. In addition, farmers were confronted with the two treatments in a different order. Results demonstrate that German farmers are more reluctant to make investment than Kazakhstani farmers. Moreover, results are independent from the framing of a farmland investment and a coin tossing game investment treatment. Furthermore, the investment behaviors of farmers were contrasted with normative...
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122454

Biofuels of the Future
Provedor de dados: 31
Autores: Oxburgh,   Ron.
There are good biofuels and bad biofuels. The good ones offer the prospect of transport fuels that have much lower environmental impact than fossil fuels and could before long be less expensive as well. Bad or irresponsibly produced biofuels may at best bring little environmental advantage; at worst they may also cause serious environmental damage, habitat destruction and food shortages. The biofuel industry of the future will make a significant contribution to the greening of the world’s vehicle transport systems by producing biofuels that are derived either from plants grown on marginal land where food crops cannot be grown, or from the organic residues from agricultural, industrial or urban processes. The industry is still in its infancy and is likely...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/124491

A spatial analysis of participation in RDP measures: a case study in Emilia Romagna Region
Provedor de dados: 31
Autores: Bartolini,   Fabio; Raggi,   Meri; Viaggi,   Davide.
A large body of literature has highlighted and analysed the issues which affect the quality and the reliability of evaluation results of the RDPs measure. In addition to weaknesses in the specification of objectives, measurement of the additionality, several authors have pointed-out a lack in evaluation of the cross-effects across space of the measure. The objective of this contribution is to develop a spatial analysis of the participation rate in the measure 121, highlighting, as a determinant, the effect of the set of priorities established by the local administration. The analysis is realised by two steps: the first is the realisation of an Exploratory Spatial Description Analysis (ESDA) of the participation rate in the Emilia Romagna Municipalities and...
Tipo: Presentation
Palavras-chave: Rural development measure; Farm modernisation; Spatial econometrics; Participation; Community/Rural/Urban Development; Q18 - Agricultural Policy; Food Policy; Q10 - General.
Ano: 2012
URL: http://purl.umn.edu/124103

Voluntary Cooperation in the Commons? Evidence from a Survey of Farmers in the Murray Region's Land and Water Management Planning Districts
Provedor de dados: 31
Autores: Marshall,   Graham R.
The Land and Water Management Plans (LWMPs) developed for the irrigation districts in the Murray region of NSW are said to be at the forefront of institutional innovation for integrated resource management. Farmers have been strongly involved both in the development of the Plans (for which cost-sharing arrangements with the NSW Government were agreed in 1996) and in deliberations regarding their implementation. Governance of LWMP implementation has been substantially devolved to Murray Irrigation Limited (MIL) which has operated the irrigation schemes since their privatisation in 1994. Since MIL is owned by its irrigator customers, its role as LWMP implementation authority has effectively shifted the rising watertables of the region (which, due to their...
Tipo: Presentation
Palavras-chave: Farm Management; Land Economics/Use.
Ano: 2000
URL: http://purl.umn.edu/123703

Measuring the Stochastic Monetary Benefits of Multiple Inlet Irrigation in Arkansas Rice Production
Provedor de dados: 31
Autores: Watkins,   K. Bradley; Hristovska,   Tatjana; Anders,   Merle M.
Irrigation fuel costs represent a significant portion of rice production expenses. Multiple inlet (MI) irrigation represents a water saving alternative to conventional flood irrigation. This study uses simulation to calculate the range of monetary benefits to MI in rice production. Water savings from MI relative to conventional flood irrigation along with rice yields, rice prices, and prices for key production inputs (diesel and fertilizer) are simulated, and stochastic rice net returns above variable and fixed expenses are calculated for different pump lifts with and without MI. Monetary benefits to MI are measured as the difference in net returns with and without MI. The results indicate MI monetary benefits depend greatly on pump lift and the presence...
Tipo: Presentation
Palavras-chave: Cost; Cumulative distribution functions; Multiple inlet irrigation; Net return; Rice; Stochastic; Farm Management.
Ano: 2012
URL: http://purl.umn.edu/119655

Map the Meal Gap: Exploring Food Insecurity at the Local Level
Provedor de dados: 31
Autores: Gundersen,   Craig; Waxman,   Elaine; Del Vecchio,   Theresa; Engelhard,   Emily; Brown,   Julia.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123975

The Effect of Information on Consumer Preferences of Indoor Plants
Provedor de dados: 31
Autores: Solano,   Alexis; House,   Lisa; Gao,   Zhifeng.
This study primarily focuses on the effect of information on consumers’ purchasing behavior.  If consumers are provided with information about a specific product they may change their beliefs about that product.  This distribution of information may lead the consumer to make the decision either to purchase or not purchase, or the consumer may increase or decrease the amount he or she is willing to pay.  Here, the impact of information about indoor plants’ ability to reduce indoor air pollution on participants is analyzed.  This research will add to the literature on consumer behavior and will also benefit the floriculture industry within the state of Florida. Florida’s floriculture sales have fluctuated during the last ten years.  From 2000 to 2003 the...
Tipo: Presentation
Palavras-chave: Effect of information; Willingness to pay; Conditional logits; Volatile organic compounds; Indoor plants; Floriculture; Agribusiness; Marketing; Research Methods/ Statistical Methods.
Ano: 2012
URL: http://purl.umn.edu/124419

Risk Reduction of LGM-Dairy and its Potential Impact on Production
Provedor de dados: 31
Autores: Burdine,   Kenneth H.; Maynard,   Leigh J.
Tipo: Presentation
Palavras-chave: Risk and Uncertainty; Teaching/Communication/Extension/Profession.
Ano: 2012
URL: http://purl.umn.edu/124180

FOOD, WATER AND WAR: SECURITY IN A WORLD OF CONFLICT
Provedor de dados: 31
Autores: Barrie,   Chris.
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123864

The Impact of Price Floors -A Real Options Based Experimental Approach-
Provedor de dados: 31
Autores: Maack,   Moritz; Maart,   Syster Christin; Musshoff,   Oliver.
In order to stimulate investments, agricultural policies frequently use price floors, which guarantee a price above a certain limit. In some cases, however, a price floor does not have the desired effects. In this study, we experimentally analyse differences in the investment be-haviour with respect to the presence of a price floor and compare the actual investment be-haviour to normative benchmarks of the net present value and the real options approach. Furthermore, we look at treatment order and learning effects. The results show that the price floor has no significant impact on the decision behaviour of participants, whereas the effects of treatment order were statistically significant. Regarding the analysis of policy impacts, the latter result shows...
Tipo: Presentation
Palavras-chave: Price floors; Investment decisions; Real options; Experimental economics.; Demand and Price Analysis; C91; D81; E61.
Ano: 2012
URL: http://purl.umn.edu/124328

Scale Efficiency in Organic and Conventional Dairy Farming
Provedor de dados: 31
Autores: Salhofer,   Klaus; Kargiannis,   Giannis; Sinabell,   Franz.
Recently, several studies compared the performance of conventional and organic farms. Most studies concentrated on technical efficiency. In this paper we add to this literature by also comparing the scale efficiency of conventional and organic milk farms in Austria during the period 1997-2002. To do so we utilize a bilateral production frontier that includes both production technologies and Green’s (1995a,b) true fixed effects model to account for firm specific time-invariant heterogeneity and technical inefficiency. We find both groups of farms to be on average equally technical efficient (when compared to their production frontier), but conventional farms being on average considerably more scale efficient. However, while scale efficiency remained...
Tipo: Presentation
Palavras-chave: Scale efficiency; Conventional vs. organic farming; Milk production; Austria; Production Economics; Q12; D20.
Ano: 2012
URL: http://purl.umn.edu/124119

OPTIMAL STRATEGIES FOR REGIONAL CULTIVAR TESTING FOR VARIOUS CROPS
Provedor de dados: 31
Autores: Kingwell,   Ross S.
Before a variety is released for adoption by farmers in a region it is subject to comparative field testing. An economic issue is how extensive and prolonged should be this field testing within the region; over how many locations, years and with what number of plot replications should testing occur? This paper addresses this issue for the main broadacre crops grown in Western Australia and shows through sensitivity analysis how robust are the findings for each crop type. Findings are contrasted with those already published for southern New South Wales.
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123827

Student Perceptions of Simulation Games and Training Software on Improving Course Learning Objectives and Career Preparedness
Provedor de dados: 31
Autores: Parrott,   Scott D.; Mehlhorn,   Joey; Davidson,   Kelly.
Online simulation and training games were used in two undergraduate courses in agribusiness to help improve student understanding and course objectives. Students responded positively to the teaching activities.  The activities also extended the out of class learning environment.
Tipo: Presentation
Palavras-chave: Student outcomes; Technology in the classroom; Simulation and teaching; Teaching/Communication/Extension/Profession; A20; A22.
Ano: 2012
URL: http://purl.umn.edu/119746

Coffee Differentiation: Demand Analysis at Retail Level in the US Market
Provedor de dados: 31
Autores: Alamo,   Carmen I.; Malaga,   Jaime E.
Scanned data was used to estimate US coffee demand using an AIDS model. The estimated elasticities have the expected signs and magnitude. Differentiated coffees are complements for regular and unclassified while regular and unclassified coffees are substitutes. These results could be useful in designing marketing strategies by coffee suppliers.
Tipo: Presentation
Palavras-chave: Demand; Coffee; Differentiation; Demand and Price Analysis.
Ano: 2012
URL: http://purl.umn.edu/119885

Canada’s Net Income Stabilization Account (NISA)
Provedor de dados: 31
Autores: Asselstine,   Alan.
After several different agricultural assistance programs in the 1980’s, Canadian farmers and governments decided to reexamine how the sector is assisted. It was farmers who put forward the idea of using government assistance to encourage farmers to save during good times in order to have funds available in their account to help them out in bad years. From this idea the Net Income Stabilization Account or NISA program was developed. The first accounts and deposits were established in 1992. As deposits and withdrawals are based on farm net income each farmer must submit farm income and expense data annually to the NISA administration. This data provides a great deal of information on NISA participants and how they are using their NISA accounts to stabilize...
Tipo: Presentation
Palavras-chave: Agricultural Finance.
Ano: 1999
URL: http://purl.umn.edu/123759

Assessing farmer field school as a sustainable agricultural methodology for farmers in Trinidad and Tobago
Provedor de dados: 31
Autores: Ramroop,   Deanne V.; Ragbir,   Sarojini.
Bridgetown, Barbados 6th-10th July, 2009
Tipo: Presentation
Palavras-chave: Ecological Crop Management; Farmer Field Schools; Sustainable Agricultural Methodology; Integrated Pest Management; Agribusiness; Teaching/Communication/Extension/Profession; Q16.
Ano: 2010
URL: http://purl.umn.edu/122883

Community Action and Pest Control
Provedor de dados: 31
Autores: Davis,   Rex; Harrison,   Stephen R.
Several authors have recognised pests as a negative common property resource. As a common property issue, there are often benefits to be gained in regional coordination of pest control activities. Entomologists have also recognised the potential benefits from regional coordination programs and have encouraged areawide Integrated Pest Management (IPM) strategies. However, despite the acknowledgment of differences between individual and regional economic thresholds, studies have not been conducted into the conditions that ensure or prevent collective action in pest control. This is surprising given the vast amount of literature on collective action theory and practice that has accumulated since the work of Mancur Olson. This paper discusses pest control and...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123800

Consumer Response to Controversial Food Technologies and Price: A Neuroeconomic Analysis
Provedor de dados: 31
Autores: McFadden,   Brandon R.; Lusk,   Jayson L.; Crespi,   John M.; Cherry,   J. Bradley C.; Martin,   Laura E.; Bruce,   Amanda S.
With new food technologies such as cloning or added artificial growth hormones, consumers face complex and conflicting information related to the quality, safety, nutrition, and ethical outcomes associated with food choices.  Economics has partially addressed the challenge of predicting people’s choices and willingness-to-pay for new food technologies by using experimental methods, but thus far has offered little to explain why choices are made.  The emerging field of neuroeconomics, which integrates the findings of economics, psychology, and neuroscience, can provide unique insights into consumer preferences.  The purpose of this research is to enhance understanding of consumers’ preferences for new food technologies by capitalizing on recent developments...
Tipo: Presentation
Palavras-chave: Controversial Food Technology; Animal Cloning; Artificial Growth Hormones; Neuroeconomics; Food Consumption/Nutrition/Food Safety; Institutional and Behavioral Economics; Research and Development/Tech Change/Emerging Technologies.
Ano: 2012
URL: http://purl.umn.edu/124071

Integrated, dynamic economic – hydrology model of the Murray-Darling Basin
Provedor de dados: 31
Autores: Kirby,   Mac; Mainuddin,   Mohammed; Gao,   Lei; Connor,   Jeffery D.; Ahmad,   Mobin-ud-Din.
We aim to model the impact of variability in and changes to water availability in the Murray-Darling Basin on flows available to the environment and irrigation, and impact on the value of irrigated agricultural production. Our objective is to understand the opportunities for changed management of the basin, how they are constrained by climate change and other factors, and how they might affect the returns to irrigation and flows for the environment, so that we may provide information to help plan for the future. In this paper we describe the model: in other papers in this conference we describe analyses of water availability and use in the basin based on this model. The hydrology component of the model is based on a simple, monthly water balance stocks and...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124487

Implications of Missing Data Imputation for Agricultural Household Surveys: An Application to Technology Adoption
Provedor de dados: 31
Autores: Gedikoglu,   Haluk; Parcell,   Joseph L.
Missing data is a problem that occurs frequently in survey data. Missing data results in biased estimates and reduced efficiency for regression estimates. The objective of the current study is to analyze the impact of missing-data imputation, using multiple-imputation methods, on regression estimates for agricultural household surveys. The current study also analyzes the impact of multiple-imputation on regression results, when all the variables in the regression have missing observations. Finally, the current study compares the impact of univariate multiple imputation with multivariate normal multiple imputation, when some of the missing variables have discrete distribution. The results of the current study show that multivariate-normal multiple...
Tipo: Presentation
Palavras-chave: Missing Data; Multiple Imputation; Bayesian Inference; Household Surveys; Research Methods/ Statistical Methods.
Ano: 2012
URL: http://purl.umn.edu/124333

An Economic Risk Assessment of the Impact on Producers of Removing Quarantine Restrictions
Provedor de dados: 31
Autores: Fraser,   Rob W.
This paper contributes to the understanding of the impact of removing quarantine restrictions on the income risk of domestic producers. It develops a model of this impact on a producer's perception of income risk. Four effects of the introduction of imports on the perceived income risk of domestic producers are identified, as well as a range of factors which influence the magnitude of these effects. A numerical analysis evaluates the role of each of these factors in determining the producer's perception of income risk following the introduction of imports. This evaluation provides a range of conclusions relevant to quarantine policy.
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2000
URL: http://purl.umn.edu/123647

Valuing Information on GM Foods in the Presence of Country-of-Origin Labels
Provedor de dados: 31
Autores: Xie,   Jing; Kim,   Hyeyoung; House,   Lisa.
Tipo: Presentation
Palavras-chave: Agribusiness; Consumer/Household Economics; Marketing.
Ano: 2012
URL: http://purl.umn.edu/123498

Managing water for the poor; Proceedings of the Regional Workshop on Pro-Poor Intervention Strategies in Irrigation Agriculture in Asia - Bangladesh, China, India, Indonesia, Pakistan and Vietnam, Colombo, 9-10 August 2001
Provedor de dados: 31
Tipo: Presentation
Palavras-chave: Water management; Irrigated farming; Surface irrigation; Large-scale systems; Poverty; Irrigation programs; Rural development; Participatory management; Conflict; Water users' associations; Farmer-agency interactions; Financing; Policy; Water rates; Pricing; Water scarcity; Rice; Irrigation scheduling; Water delivery; Case studies; Farm Management; Financial Economics; Food Security and Poverty; Public Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/118412

La Valutazione dei Servizi Ecosistemici. Proposta per un Approccio Termoeconomico
Provedor de dados: 31
Autores: Longhitano,   Davide.
The main objective of this communication is to review the theoretical ecosystem and agroecosystem services assessment’s methods and to propose a thermoeconomic approach. The logic of thermoeconomic approach consists in analysing the use of natural resources during the production process, interpreting it as a thermodynamic conversion in order to assess the overall specific energy consumption of the systemic components arriving at estimates of fluxes and energy costs. This study analyses comparatively the main thermoeconomic-based approaches to verify the feasibility of the "energy value" as an appraisal criterion of agroecosystem services. In particularly among the reviewed approaches the Emergy synthesis seems the most appropriate tool to be empirically...
Tipo: Presentation
Palavras-chave: Thermoeconomic approach; Agroecosystem services; Exergy; Emergy; Environmental accounting; Resource /Energy Economics and Policy; Q56; Q57.
Ano: 2012
URL: http://purl.umn.edu/124123

POLLUTION CONTROL POLICIES FOR AUSTRALIAN PRAWN FARMS
Provedor de dados: 31
Autores: Brennan,   Donna C.
The environmental consequences of shrimp farming in Asia have caused widespread public concern. One of the main environmental impacts is the high nutrient load that is discharged from ponds, as part of the management routine aimed at maintaining pond water quality. In Australia, where there is a high level of community awareness of the problems associated with eutrophication, the Environmental Protection Agencies are faced with the difficult task of determining effluent control policies for the emerging prawn industry. According to the standard environmental economic arguments relating to the design of pollution control instruments, the choice of the best policy instrument depends upon the nature of the pollution problem, the costs of abatement, and the...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123774

Produzione del colza per fini energetici: impatto ambientale e metodo di coltivazione
Provedor de dados: 31
Autores: Palmieri,   Nadia; Forleo,   Maria Bonaventura; Suardi,   Alessandro; Coaloa,   Domenico; Pari,   Luigi.
A seguito dell’applicazione della riforma OCM zucchero, si sono avviati piani di riconversione della filiera bieticolo-saccarifera verso diverse filiere agroenergetiche. La colza è considerata tra le colture strategiche da utilizzare per la produzione di biodiesel. Tra gli studi di riconversione sta acquistando sempre maggiore importanza l’analisi della sostenibilità ambientale ed economica del processo di cambio d’uso del suolo. Obiettivo dello studio è condurre un’analisi dell’impatto ambientale della coltivazione di colza al fine di individuare il modello colturale meno impattante. L’analisi ambientale è condotta su cinque realtà rappresentative individuate mediante l’impiego della cluster analysis a partire da un campione di 251 appezzamenti coltivati...
Tipo: Presentation
Palavras-chave: Bioeconomy; Life Cycle Assessment; Brassica napus; L; Resource /Energy Economics and Policy; Q01; Q12; Q51.
Ano: 2012
URL: http://purl.umn.edu/124125

REVERSING THE PROPERTY RIGHTS: A PRACTICE-BASED TRADING APPROACH FOR CONTROLLING AGRICULTURAL NONPOINT-SOURCE WATER POLLUTION
Provedor de dados: 31
Autores: Rabotyagov,   Sergey S.; Valcu,   Adriana M.; Kling,   Catherine L.
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124371

Community attitudes towards water management in the Moore Catchment, WA.
Provedor de dados: 31
Autores: Burton,   Michael P.; Marsh,   Sally P.; Patterson,   Josie.
The Moore Catchment, which lies to the north of Perth, WA, suffers from a number of problems related to water management. Farmers want to manage salinity and waterlogging problems through the use of drains, but this has negative off-farm impacts on both the environment and flood risk. Views on responsibilities for managing water within the catchment differ between farmers, local communities and government agencies. This paper reports the results from surveys of attitudes towards catchment management, for two community groups: residents of Perth and residents of rural towns in the catchment. A parallel study of farmers has been undertaken but is not reported here. These surveys elicited general attitudes towards the environment and agriculture, and views on...
Tipo: Presentation
Palavras-chave: Community/Rural/Urban Development; Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123616

Foreword
Provedor de dados: 31
Autores: Andrew,   Neil.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/124486

Forests for Woods’ Sake: The Demand for Primary Wood Products to 2020
Provedor de dados: 31
Autores: De Fegely,   Rob.
This presentation covers the main factors driving demand for wood products, global and regional demand to 2020, the significance of developing countries in supply and demand, and the role of Australia in Asia-Pacific.
Tipo: Presentation
Palavras-chave: Demand and Price Analysis; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/124398

Induced land use emissions due to first and second generation biofuels and uncertainty in land use emissions factors
Provedor de dados: 31
Autores: Taheripour,   Farzad; Tyner,   Wallace E.
Much research has provided estimates of induced land use change and emissions for first generation biofuels.  Relatively little has estimated land use change for the second generation cellulosic biofuels.  In this paper we estimate induced land use change and emissions for these biofuels. Estimated emissions due to land use changes induced by biofuels production are uncertain not only because their associated land use changes are uncertain, but also because of uncertainty in the land use emissions factors (EFs). This paper also examines uncertainties related to these EFs and their assumptions. Three emissions factors including EFs obtained based on Woods Hole (WH) data, EFs developed by California Air Resources Board (CARB), and EFs obtained from the...
Tipo: Presentation
Palavras-chave: Cellulosic biofuels; Land use change emissions; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124407

Agricultural response analysis in a longer term framework
Provedor de dados: 31
Autores: Farquharson,   Robert J.; Cacho,   Oscar J.; Turpin,   J.E.
Issues of long term soil fertility decline and sustainability are becoming more important for cropping industries in Australia. Helping to manage the level of soil fertility in this context is an aim of economic response analysis. This paper reviews the theory and methods used by economists to derive the optimal level of an input to be used in a production process. In particular, response functions generated by a crop simulation model are used as a basis for the analysis. The use of such models is becoming widespread in the research and extension community. A variety of methods are presented, in increasing order of complexity, to account for the real world characteristics of the production environment in this context.
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123634

Politiche agricole europee post 2013: modelli predittivi dei cambiamenti di uso del suolo
Provedor de dados: 31
Autores: Cozzi,   Mario; Romano,   Severino; Giglio,   P.; Catullo,   Giovanna.
Il settore primario svolge un ruolo fondamenntale per il mantenimento ddell’equilibrioo climatico ambientale e laa sua funzionee di produzionne di beni di pubblica utilità trova oggi notevole riconoscimento all’interno dei programmi dii politica agricola comunitaria. Programmi che, a seguito dei cambiamenti climatici e del mutamento delle condizioni del mercato, sono sensibilmente mutati. Ciò ha avuto delle notevoli influenze sul settore agriricolo, ed in particolare ha condizionatoo le scelte colturali degli agricoltori e, di conseguenza, la destinazionne d’uso dei suoli agricoli. Le variabili coinvolte in questo processo sono molteplici:morfologiche, climatiche, economiche e sociali, ecc.;; da ciò comprendere le dinamiche che guidano il cambiamento e...
Tipo: Presentation
Palavras-chave: Reti neuurali; Multi-layyer perceptronn (MLP); Polittica agricola comunitaria; Svviluppo ruralee; Land Economics/Use; (C45).
Ano: 2012
URL: http://purl.umn.edu/124129

Determining the cost-effectiveness of Phytophthora cinnamomi management in the Fitzgerald River National Park
Provedor de dados: 31
Autores: Davis,   Katrina J.; Pannell,   David J.; Kragt,   Marit Ellen.
The Fitzgerald River National Park is one of the world’s 25 biological hotspots, containing many endemic flora and fauna species. Its unique biodiversity is being threatened by the introduced root pathogen, Phytophthora cinnamomi. We evaluate the cost-effectiveness of strategies to manage Phytophthora cinnamomi in the park, using the Investment Framework for Environmental Resources (INFFER). Management strategies based on current and higher investment levels are shown to have high Benefit Cost Indices. These results support the use of public conservation funds to address the threat of Phytophthora cinnamomi, and show the need for improved understanding of the impact and the adoption of strategies.
Tipo: Presentation
Palavras-chave: Cost-effectiveness; Economic investment framework; Phytophthora cinnamomi; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124288

Speculative impacts on grains price volatility
Provedor de dados: 31
Autores: Gilbert,   Christopher L.
The paper examines the impact of changes in the positions of financial actors on the volatilities of Chicago grains and vegetable oil prices using a GARCH-X framework within which a variant of Granger-causality tests can be performed. The paper analyses both the position data in the post-2006 CFTC Commitments of Traders reports and the data on index provider positions in the Supplemental reports. A test of the Masters hypothesis that index trading increase volatility fails to find support.
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122540

Analyzing Households’ Fruit Juice Consumption and Purchasing Tendency: A Case Study From Isparta
Provedor de dados: 31
Autores: Gul,   Mevlut; Akpinar,   Goksel; Dagistan,   Erdal; Yilmaz,   Hilal; Gulcan,   Sinem.
The investments of fruit juice industry had been begun in 1969 in Turkey and accelerated since 1983 in modern sense. 37 fruit juice firms are officially registered as trademark. The fruit juice consumption per head was increased in the beginning of 1970s by about 13 fold augmentation, however, this value is still considerably lower than the developed countries. Relatively high fresh fruit consumption is caused lower fruit juice consumption in Turkey. However, an increasing in the domestic demand of fruit juice is observed by the years. This study was carried out to determine the fruit juice consumption and the expenditure of the families in Isparta Province. Thus, this investigation was conducted in the centre of Isparta. In this means, purchasing...
Tipo: Presentation
Palavras-chave: Fruit Juice; Consumption; Expenditure Structure; Agribusiness; Food Consumption/Nutrition/Food Safety; Research Methods/ Statistical Methods.
Ano: 2011
URL: http://purl.umn.edu/121997

Do Contracting Incentives Matter?
Provedor de dados: 31
Autores: Alexander,   Corinne E.; Goodhue,   Rachael E.; Rausser,   Gordon C.
Agency theory explanations for agricultural contract designs are often observationally equivalent to perfect information explanations. Further in order to test properly the hypothesis that moral hazard is important one must first test and accept the hypothesis that agents respond to contract incentives. If agents do not respond to contract incentives then it is unlikely that moral hazard is significant. Accordingly we move beyond contract design and focus on whether or not we can reject the hypothesis that moral hazard is important by examining growers responses to price incentives for processing tomato quality. We utilize a natural experiment.  In our data set growers deliver processing tomatoes under a price incentives contract and for a fixed price per...
Tipo: Presentation
Palavras-chave: Demand and Price Analysis.
Ano: 1999
URL: http://purl.umn.edu/123595

The Value and Cost of Restaurant Calorie Labels: Results from a Field Experiment
Provedor de dados: 31
Autores: Ellison,   Brenna D.; Lusk,   Jayson L.; Davis,   David W.
Using field experiment data, we estimate a structural model of consumer demand to determine the value of information for restaurant menu labels. Our experimental design allows us to compare the effectiveness of calorie labels to a “fat tax” at reducing caloric intake. Results show numeric labels did not influence demand, but symbolic traffic light labels reduced the marginal utility of caloric intake. Our model projects both labels would reduce intake more than high-calorie taxes or low-calorie subsidies. Ultimately, traffic light calorie labels led to the largest reduction in caloric intake but also one of the largest reductions in restaurant net returns.
Tipo: Presentation
Palavras-chave: Menu labeling; Full-service restaurant; Calorie taxes/subsidies; Restaurant net returns; Food Consumption/Nutrition/Food Safety; I18; D04.
Ano: 2012
URL: http://purl.umn.edu/123529

EVALUATION WITH INADEQUATE DATA: THE IMPACT OF THE FRENCH VENDING MACHINE BAN
Provedor de dados: 31
Autores: Capacci,   Sara; Mazzocchi,   Mario; Shankar,   Bhavani.
We estimate the effects of the 2005 ban on vending machines in French schools using the 1998 and 2006 INCA nutrition surveys. These surveys contain no information on the presence of vending machines in schools attended by respondents, but the adoption of a Difference-in-Difference design, and a Regression Discontinuity Design enable us to obtain indirect estimates of the policy impact. Results are consistent and suggest that the measure has had a small but significant impact on teenager nutrition, especially in terms of reduced fat intakes.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety; I18.
Ano: 2012
URL: http://purl.umn.edu/123198

How Fast Do Urban Migrants Change Their Diets?
Provedor de dados: 31
Autores: Gibson,   John.
Rapid urbanization is a major cause of structural change in food demand. In West Africa, urbanization is associated with a switch from coarse grains to rice and wheat, in Melanesia the switch is from root crops to rice and wheat, while in much of Asia the switch is away from cereals (and within cereals to wheat). Although reasons why urban diets differ from traditional rural diets are well known, the rate at which recent arrivals from the countryside switch their diet has not been estimated. Evidence on the speed of this dietary change can help to show whether studies of urban food demand need to control for cohort effects and may also help producers forecast the size of their future urban markets. This paper uses cross-sectional household survey data from...
Tipo: Presentation
Palavras-chave: Food demand; Migration; Urbanization; Food Consumption/Nutrition/Food Safety; D12; O15.
Ano: 1999
URL: http://purl.umn.edu/123806

Stochastic Frontier Analysis of Biological Agents (Microbial Inoculants) Input Usage in Apple Production
Provedor de dados: 31
Autores: Chavez,   Holcer; Nadolnyak,   Denis A.; Kloepper,   Joseph.
In this paper, we analyze the impact of the Microbial Inoculants (MI) Technology on apple yields and pesticide application using 2007 farm data. The results show that pesticide usage is not reduced by MI applications. However, there is a significant positive effect on the yields. Apple production efficiency is 37%.
Tipo: Presentation
Palavras-chave: Microbial Inoculants; Apple production; Frontier analysis; Damage control; Farm Management; Production Economics; Research and Development/Tech Change/Emerging Technologies; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/119796

Global food markets by 2030: What roles for farm TFP growth and trade policies?
Provedor de dados: 31
Autores: Anderson,   Kym; Strutt,   Anna.
Rapid trade-led economic growth in emerging Asia has been shifting the global economic and industrial centres of gravity away from the north Atlantic, raising the importance of Asia in world trade but also altering the commodity composition of trade by Asia and other regions. What began with Japan in the 1950s and Korea and Taiwan from the late 1960s has spread to the much more populous ASEAN region, China and India. This paper examines how that growth and associated structural changes are altering agricultural markets in particular and thereby food security. It does so retrospectively and by projecting a model of the world economy which compares alternative growth strategies, trade policy scenarios and savings behaviors to 2030. Projected impacts on...
Tipo: Presentation
Palavras-chave: Global economy-wide model projections; Asian economic growth and structural change; South-South trade; Booming sector economics; Food security; International Relations/Trade; Marketing; D58; F13; F15; F17; Q17.
Ano: 2012
URL: http://purl.umn.edu/124192

The Northern Myth revisited: A resource economics research response to renewed interest in the agricultural development of the Kimberley region
Provedor de dados: 31
Autores: Greiner,   Romy.
The proposal for a 64,000 hectare expansion of the Ord River Irrigation Area is one example of the renewed interest in agricultural development in the tropical north of the Australian continent. Thirty five years ago Bruce Davidson provided conclusive ‘evidence’ that agricultural development in this region was not financially sustainable unless supported by ongoing government subsidies. He argued that this conclusion was unlikely to change in the future. This paper outlines the controversy over past and proposed agricultural developments and explains the role of agriculture in the Kimberley economy today and in relation to other natural resource based industries. In a time when the paradigm of sustainable development recognises ‘quality of life’ and...
Tipo: Presentation
Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 2000
URL: http://purl.umn.edu/123655

Fish for Feed vs Fish for Food
Provedor de dados: 31
Autores: Allan,   Geoff L.
Aquaculture is the fastest-growing food producing industry sector in the world. Demand for feed ingredients, particularly for preferred protein sources such as fishmeal, fish oil and ‘trash fish’, has also increased, raising questions about sustainability and uses of fish for aquaculture feeds or directly as human food. Approximately 30 million metric tonnes (MMT) of fish from capture fisheries are used each year to produce fishmeal and fish oil. The species used are not usually consumed directly by humans. Production of fishmeal and fish oil has remained relatively static over many years, with the increasing amount going to aquaculture feeds being balanced by reducing amounts going to other animal feeds. Trash fish are generally smaller or lower-value...
Tipo: Presentation
Palavras-chave: Livestock Production/Industries; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/124068

Productivity differences across New South Wales rice farms: Links to resource quality
Provedor de dados: 31
Autores: Harrison,   Scott; Chapman,   Lisa.
Productivity indices were calculated for rice farms across New South Wales using data envelopment analysis (DEA) techniques. These revealed distinct geographic patterns. Preliminary work showed these geographic patterns were consistent with differences in resource quality, including depth from watertables, soil types and salinity levels. If differences in measured productivity are influenced by the quality of land and water resources used to produce rice, isolating this influence may provide a way of quantifying the costs associated with resource quality issues such as rising groundwater tables and soil salinity.
Tipo: Presentation
Palavras-chave: Crop Production/Industries; Productivity Analysis.
Ano: 1999
URL: http://purl.umn.edu/123812

Trade costs and the pattern of Foreign Direct Investment: evidence from five EU countries
Provedor de dados: 31
Autores: Cardamone,   Paola; Scoppola,   Margherita.
Abstract According to the theoretical models of the multinational enterprise, trade costs play a fundamental role in determining the pattern of foreign direct investment (FDI). The aim of this paper is to assess the impact of trade policies on the outward stocks of FDI of the EU. We estimate a model based on the knowledge-capital theory of the multinational enterprise over the period 1995-2008 by using a sample of five EU countries and 26 partner countries. We consider, first, manufacturing sector as a whole and, then, six manufacturing industries, among which the food industry, defined at the two-digit level of the NACE classification. Explanatory variables include an index of applied bilateral tariffs and a dummy to capture the presence of Bilateral...
Tipo: Presentation
Palavras-chave: FDI; Trade protection; Knowledge-capital model; International Relations/Trade; F15; F21; F23; C33.
Ano: 2012
URL: http://purl.umn.edu/124106

Certified Quality Systems and Good Practices in the Olive Farming Sector of Andalusia, Spain: Special Focus on Protected Designations of Origin
Provedor de dados: 31
Autores: Parra-Lopez,   Carlos; Hinojosa-Rodriguez,   Ascension; Carmona-Torres,   Carmen; Sayadi,   Samir.
Producing products of recognised and differentiated quality entails a competitive advantage for agro-food agents since consumers are increasingly demanding high-quality food and control in the production process as a whole in a transparent and verifiable manner. Certification of products and processes through the implementation of Certified Quality Systems (CQS) are voluntary and guarantees standards of quality beyond conventional and mandatory levels. CQS include European, national and regional regulations (such as Protected Designation of Origin – PDO, organic and integrated agriculture), ISO norms (such as 9000, 14001, 19011, and 22000), private protocols (GLOBALGAP, International Food Standard - IFS, Nature’s Choice, etc.), and specific regulations for...
Tipo: Presentation
Palavras-chave: Olive agriculture; Certified Quality Systems; PDO; Good agricultural practices; Adoption factors.; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; International Relations/Trade.
Ano: 2011
URL: http://purl.umn.edu/122019

Barriers to water markets in agriculture. Analysis of Southern Spain stakeholder attitudes
Provedor de dados: 31
Autores: Giannoccaro,   Giacomo; Pedraza,   Veronica; Berbel,   Julio.
This paper was removed Feb. 27, 2013 at the request of the authors.
Tipo: Presentation
Palavras-chave: Water markets; Focus groups; Irrigation; Stakeholder attitude; Resource /Energy Economics and Policy; Q15; Q25.
Ano: 2012
URL: http://purl.umn.edu/124113

A Non-Parametric Analysis of Rice Production Efficiency in Sri Lanka
Provedor de dados: 31
Autores: Thibbotuwawa,   Manoj; Mugera,   Amin W.; White,   Benedict.
This article investigates the production efficiency of rice farming in Sri Lanka using cross section survey data of 90 farms. Past studies on rice farming have mostly focused on technical efficiency (TE). Here, we examine technical efficiency, allocative efficiency (AE) and cost efficiency (CE) using the data envelopment analysis (DEA) approach. On average, the farms were 87% technically efficient; irrigated farms were more efficient (88%) than rain-fed farms (82%). Average cost, allocative and scale efficiencies were 73%, 84% and 87%. Bias corrected TE estimate suggests an expected output expansion of 25% with a given input combination in order to become fully efficient as opposed to 16% based on the original estimates. In addition, a second stage Tobit...
Tipo: Presentation
Palavras-chave: Technical efficiency; Cost efficiency; Bootstrap; Rice farming; Sri Lanka; Crop Production/Industries.
Ano: 2012
URL: http://purl.umn.edu/124423

An Inverse Demand System for New England Groundfish: Welfare Analysis of the Transition to Catch Share Management
Provedor de dados: 31
Autores: Lee,   Min-Yang A.; Thunberg,   Eric M.
In 2010, the Northeast groundfish fishery transitioned from an effort-control system (Days-at-Sea) to an output-control system (catch shares). Simultaneously, a large decrease in aggregate catch was imposed in order to achieve biological objectives. This research examines the welfare effects of the transition to catch-share management by combining an inverse demand model for groundfish with a simulation based model of supply. The Generalized Differential Inverse Demand System is estimated for groundfish and imports using monthly data from 1994-2011 using a Generalized Method of Moments estimator. The estimated parameters are combined with simulated landings derived from a counterfactual policy scenario had ef- fort controls been retained instead of the...
Tipo: Presentation
Palavras-chave: Demand and Price Analysis; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/123879

The Theoretical Structure of Producer Willingness to Pay Estimates
Provedor de dados: 31
Autores: Zapata,   Samuel D.; Carpio,   Carlos E.
This paper analyzes the theoretical underpinnings of producers’ willingness to pay (WTP) for novel inputs. In addition to conceptualizing the WTP function for producers, we derive its comparative statics and demonstrate the use of these properties to estimate input quantities demanded, outputs supplied, and price elasticities. We also discuss implications of the comparative statics results for the specification of empirical producer WTP models and survey design.
Tipo: Presentation
Palavras-chave: Cobb-Douglas production function; Contingent valuation; Price elasticities; New technologies; Survey design.; Agribusiness; Demand and Price Analysis; Environmental Economics and Policy; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/123434

The Impact of Proposed Federal Tax Reform on Farm Businesses
Provedor de dados: 31
Autores: Williamson,   James M.; Durst,   Ron L.
Tipo: Presentation
Palavras-chave: Federal Tax Reform; Agriculture; Farm Business; Agricultural Finance; H20; Q14.
Ano: 2012
URL: http://purl.umn.edu/123753

International Pork Trade and Foot-and-Mouth Disease
Provedor de dados: 31
Autores: Yang,   Shang-Ho; Reed,   Michael R.; Saghaian,   Sayed H.
International pork trade has not only been influenced by trade agreements but also altered by consumer perceptions on disease-infected animals. This study uses a gravity model with fixed-effects to investigate how pork trade is affected by foot-and-mouth disease among 186 countries. Results confirm that pork export falls when an exporting country develops FMD. Exporters with a vaccination policy have larger negative impacts than those with a slaughter policy. Further, pork importers that develop FMD and institute a slaughter policy will import more pork, but importers with a vaccination policy import the same level of pork. In order to retain a position as a top pork exporter, a slaughter policy is often a better choice than a vaccination policy.
Tipo: Presentation
Palavras-chave: Foot-and-mouth disease; Pork exports; Regional trade agreement; Gravity model; Zero-valued trade.; Food Consumption/Nutrition/Food Safety; International Relations/Trade; Research Methods/ Statistical Methods; C52; Q17; Q18.
Ano: 2012
URL: http://purl.umn.edu/124356

How Do Different Countries Use Labeling Standards: A Case Study Comparing Wisconsin Real Cheese to Parmigiano-Reggiano
Provedor de dados: 31
Autores: Patel,   Payal; House,   Lisa; Spreen,   Thomas H.
Product labeling is an important dimension in food retailing. The evolution of Protected Geographic Indicators (PGI) and Protected Designation of Origin (PDO) in the European Union are used to identify products grown in a specific region or food products produced using a specific technology. The United States has followed a different path with the use of certifyca-tion/trademarks to identify either product origin or other differentiable characteristics. The divergence of the two approaches has led to trade disputes and WTO lawsuits. In this paper, the main attributes of the two approaches are identified and highlighted with a brief case study comparing Wisconsin Real Cheese and Parmigiano-Reggiano from Italy.
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; International Relations/Trade.
Ano: 2011
URL: http://purl.umn.edu/122015

Geographic Distribution of Renewable Energy Sector Industries: An Analysis Using Recent Developments in Industry Concentration Measurement
Provedor de dados: 31
Autores: Register,   D. Lane; Lambert,   Dayton M.; English,   Burton C.; Jensen,   Kimberly L.; Menard,   R. Jamey; Wilcox,   Michael D.
Recent developments in firm location analysis are applied to explore the concentration patterns of firms making up the green energy sectors in 2002 and 2006. A two-step procedure is applied in this analysis. First, Guimarães, Figueiredo, and Woodward’s spatial adaption of Ellison and Glaeser’s industry concentration index are applied to estimate the degree to which firms making up the so-called green energy sectors tend to exhibit concentration. In the second stage, the spatial distribution of concentration is analyzed using a statistical framework, also suggested by Guimarães, Figueiredo, and Woodward. Preliminary results suggest that green energy subsectors exhibit significant global concentration, but localized concentration appears to be random.
Tipo: Presentation
Palavras-chave: Global; Local; Industry concentration measures; Green energy sectors; Community/Rural/Urban Development; Research Methods/ Statistical Methods; C21; L20.
Ano: 2012
URL: http://purl.umn.edu/124038

Agricultural Trade Liberalisation will Benefit every Trading Nation
Provedor de dados: 31
Autores: Moore,   Michael K. (Mike).
Tipo: Presentation
Palavras-chave: International Relations/Trade.
Ano: 2003
URL: http://purl.umn.edu/124011

Closing the Eyes on a Gloomy Future: Psychological Causes and Economic Consequences
Provedor de dados: 31
Autores: Laajaj,   Rachid.
This paper analyzes the impact of economic prospects on one’s time preference. Research in psychol- ogy has shown how individuals modify their preferences in order to reduce their cognitive dissonance, which is the uncomfortable tension felt when simultaneously holding conflicting thoughts. It occurs among the poor when simultaneously caring about their future welfare while having gloomy economic prospects. Hence closing their eyes on the future can reduce their psychological distress at the cost of worsening their future economic wellbeing. This paper offers a new theoretical approach that decom- poses time discounting and analyzes the endogenous determination of one’s time horizon. The model predicts that, below a certain wealth, the time horizon of an...
Tipo: Presentation
Palavras-chave: Endogenous time preference; Cognitive dissonance; Time horizon; Community/Rural/Urban Development; Consumer/Household Economics; Institutional and Behavioral Economics; D91; O12; Q12.
Ano: 2012
URL: http://purl.umn.edu/123933

Association Between the Food Environment and Obesity in North Carolina: A Multilevel Analysis of the Role of Food Retail Sources and Obesity
Provedor de dados: 31
Autores: Adu-Nyako,   Kofi; Okafor,   Ralph.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123981

The Impact of Ethanol Production on the U.S. Gasoline Market
Provedor de dados: 31
Autores: Marzoughi,   Hassan; Kennedy,   P. Lynn.
This paper uses a simultaneous equation system to determine the impact of ethanol fuel production on the U.S. motor gasoline market, especially gasoline prices. Based on estimation results, every billion gallon increase in ethanol production decreases gasoline prices by as much as 6 cents.
Tipo: Presentation
Palavras-chave: Ethanol; Gasoline Market; Corn; Biofuel; Agricultural and Food Policy; Q18.
Ano: 2012
URL: http://purl.umn.edu/119752

Transferring Paddock Histories to Optimise Crop Rotations Using LP: a New, Unrestricted Approach
Provedor de dados: 31
Autores: Wimalasuriya,   Rukman; Eigenraam,   Mark.
Modelling of cropping or crop-pasture rotations to date has been based on a predetermined, restricted set of rotations as “activities” of a Linear Programming matrix. This approach limits the use of such models to evaluate new crop varieties and potential rotations. It also results in the necessity to build entirely new models for each agro-climatic region due to differences in crop and rotation choices that are available. This paper presents an alternative model that solves for the optimal rotation from all theoretically possible rotations. Each crop in the optimal solution is determined given the paddock history of the previous two years. The choice of options to maximise farm profit (or gross margin) depends mainly on the crop yields and prices. The...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123740

Issues in Modelling the Australian Dairy Industry: Joint Products, Market Power and Deregulation
Provedor de dados: 31
Autores: MacAulay,   T. Gordon; Owen,   Kate M.; O'Donnell,   Christopher J.
This paper reports on an expanded and revised version of the spatial equilibrium model of the Australian dairy industry developed by MacAulay (1997). In the expanded version there is demand for five manufactured products. The transformation from bulk milk to final product is modelled by considering milk and dairy products in terms of their primary components, milk fat and protein. For market milk, a variable element was added to the margin to replicate the effects of market power in the processor to retail chain. Some implications for the deregulation of the Australian dairy industry are noted.
Tipo: Presentation
Palavras-chave: Spatial equilibrium models; Joint production; Market power; Dairy; Livestock Production/Industries; Marketing.
Ano: 1999
URL: http://purl.umn.edu/123833

Consumer Preference Variation between Domestic and Imported Food
Provedor de dados: 31
Autores: Parcell,   Joseph L.; Gedikoglu,   Haluk.
Increasing concerns about a healthy diet, food safety and support for the local economy provide new opportunities for farmers to increase their farm income by locally selling their farm products. The major challenge for farmers making local sales is to predict consumer preferences correctly and provide goods to the market accordingly. By analyzing results from a consumer survey conducted in the Midwest, the current study determines the consumer preferences for domestic artisan cheese compared with processed cheese and imported French cheese compared with U.S. artisan cheese. The results of the econometric analysis show that consumer preferences vary between domestic and imported cheese. The results also show that experience attributes are more influential...
Tipo: Presentation
Palavras-chave: Willingness to Pay; Consumer Preferences; Ordered Probit; Factor Analysis; Agribusiness; Marketing.
Ano: 2012
URL: http://purl.umn.edu/124183

The Identification of Emerging Agribusiness Opportunities in Selected CARICOM Countries
Provedor de dados: 31
Autores: Iton,   Ardon; Seepersad,   Govind; Johnson,   Christian.
Belize City, Belize 23rd - 27th July, 2007
Tipo: Presentation
Palavras-chave: Fresh-cut vegetables; Small farmers; Business opportunities; Agribusiness; Q13.
Ano: 2009
URL: http://purl.umn.edu/122892

Modelling the management of multiple-use reservoirs: Deterministic or stochastic dynamic programming?
Provedor de dados: 31
Autores: Tran,   Lap Doc; Schilizzi,   Steven; Chalak,   Morteza; Kingwell,   Ross S.
Modelling complex systems such as multiple-use reservoirs can be challenging. A legitimate question for scientists and modellers is how best to model their management under uncertain rainfall. This paper studies whether it is worth using a stochastic model that requires more effort than a much simpler deterministic model. Both models are applied to the management of a multiple-use reservoir in southern Vietnam. Although no single modelling approach is universally superior, this study indicates that the desirable modelling approach is stochastic if reservoir capacity and water use demands have a high enough impact on the optimal timing of reservoir water use.
Tipo: Presentation
Palavras-chave: Deterministic dynamic proramming; Stochastic dynamic programming; Water management; Irrigation; Fisheries; Multiple-use reservoir; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124463

From total farm to household risk: implication for risk management
Provedor de dados: 31
Autores: de Mey,   Yann; Wauters,   Erwin; van Winsen,   Frankwin; Vancauteren,   Mark; Van Passel,   Steven; Lauwers,   Ludwig H.
Modeling the farm level impact of risk management programs, policies and instruments is traditionally been done on a farm-level basis. Hence, farm simulation models typically use the behavioural assumption of profit or utility maximization is risk aversion taken into account. However, abundant – albeit indirect – evidence from different literature sources suggest that minimization of  household risk – being the chance of falling below a certain threshold level of household cash flow – might be more realistic behavioural assumption. In this paper, we present concepts of operational, financial, total farm and household risk. Further, using a stochastic simulation model on two typical Belgian dairy farms, we illustrate possible farmers responses in the...
Tipo: Presentation
Palavras-chave: Household risk; Typical dairy farms; Stochastic simulation; Household buffering capacity; Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122470

Innovative capacity and productivity: an empirical analysis of Australian grain growers
Provedor de dados: 31
Autores: Nossal,   Katarina.
Slowing productivity growth in the Australian grains industry has led to calls for increasing investment in rural R&amp;D to advance agricultural technology. However, recent research also suggests there is strong potential to increase productivity by enhancing uptake of existing innovations. The productivity gains from innovation adoption are likely to depend on the capacity of farmers to effectively select, adapt and integrate innovations into existing farming systems. In this paper, the innovative capacity of grain growers is characterised by variables related to the farm, the farmer and their operating environment. The influence of these factors on on-­‐farm innovation adoption is tested using an ordered probit model. The relationship between innovative...
Tipo: Presentation
Palavras-chave: Innovation; Grain growers; Ordered probit; Productivity; Crop Production/Industries; Productivity Analysis.
Ano: 2012
URL: http://purl.umn.edu/124353

The effect of storms on Optimal Beach Managenent
Provedor de dados: 31
Autores: Gopalakrishnan,   Sathya; McNamara,   Dylan; Smith,   Martin D.; Murray,   Brad.
Tipo: Presentation
Palavras-chave: Beach Nourishment; Climate Change; Storms; Optimal control; Environmental Economics and Policy; Resource /Energy Economics and Policy; Q54.
Ano: 2012
URL: http://purl.umn.edu/124375

Relating Behavioral Elements of Household Food Negotiation to Childhood Overweight and Obesity
Provedor de dados: 31
Autores: Ehmke,   Mariah D.; Schroeter,   Christiane; Morgan,   Kari; Larson-Meyer,   Enette; Ballenger,   Nicole.
Researchers working in the fields of family studies and psychology show motherchild relationship dynamics affect the occurrence of childhood overweight and obesity. Many of the significant behaviors they identify relate to negotiation and generosity norms in the household. The primary objective of this study is to test the value of altruistic and collective models of household behavior using the dictator and ‘carrotstick’ laboratory experiments. We also test exploratory hypotheses relating mother’s generosity and child’s punitive behavior and mother-child weight and fitness outcomes using dictator and ‘carrot-stick’ games. The data were collected from 50 mother-child pairs in Laramie, Wyoming. The children were all eight to 10 years old. The mother’s...
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123516

EVALUATION OF RESEARCH ACTIVITIES
Provedor de dados: 31
Autores: Stoneham,   Gary; Strappazzon,   Loris; Soligo,   James; Fisher,   Bill; Eigenraam,   Mark; Wimalasuriya,   Rukman.
In this paper we explain the economic evaluation system developed by economists―in conjunction with senior managers―for the Department of Natural Resources and Environment’s Agriculture Division. This evaluation system has two components: qualitative and quantitative. The former focuses Departmental activity on areas where there is market failure. The latter measures the gross benefits from Departmental activity by using linear programming models. We also document the implementation of the system to a recent Victorian Government intiative―Growing Horizons. We explain the process, impact to date, and lessons learned by undertaking this exercise.
Tipo: Presentation
Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 2000
URL: http://purl.umn.edu/123645

PEACE THROUGH DEVELOPMENT: HOW CAN AUSTRALIA HELP?
Provedor de dados: 31
Autores: Bie,   Stein W.
Tipo: Presentation
Palavras-chave: International Development.
Ano: 2000
URL: http://purl.umn.edu/123868

HOW DOES HACCP CHANGE U.S. SEAFOOD EXPORTS?-ANALYSIS WITH FISHES, MOLLUSCA, AND SHELLFISH OTHER THAN MOLLUSCA
Provedor de dados: 31
Autores: Li,   Xiaoqian; Saghaian,   Sayed H.
Although the effect of HACCP on international trade is an issue with many concerns recently, only a few empirical studies focus on the impact of HACCP on U.S seafood export industry. Using the approach of Gravity Model with adjustment of unobserved country characteristics, this paper contributes to analyze the differential effects of HACCP implementation on three kinds of seafood: fishes, mollusca, and shellfish other than mollusca. The results indicate that HACCP application has negative but insignificant effect on seafood exports in the short run. In the long run, HACCP only negatively and significantly affect seafood exports of mollusca and shellfish. Moreover, the higher risk of food born disease seafood has, the easier is seafood trading affected by...
Tipo: Presentation
Palavras-chave: HACCP; Mollusca; Fishes; Shellfish Other Than Mollusca; Trade Flow; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/119859

FOOD SECURITY IN PAPUA NEW GUINEA
Provedor de dados: 31
Autores: Omot,   Norah.
The food security situation in Papua New Guinea (PNG) is discussed. PNG is a nation blessed with natural resources but continues to face development and environmental challenges with implications on food security. While the country may be secured in terms of food production and quantity, there are concerns on the nutritional aspects. Short term threats, aggravated by climate change and other challenges such as increasing food prices are major concerns. Lessons learnt on efforts to address threats and other challenges and some strategies identified by the National Agricultural Research Institute are discussed.
Tipo: Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2012
URL: http://purl.umn.edu/124204

Fertilizer Demand for Biofuel and Cereal crop Production in the United States
Provedor de dados: 31
Autores: Acheampong,   Kwame; Dicks,   Michael R.
The emergence of biofuel production has impacted almost all sectors of the agricultural industry and the general economy and has produced a large body of research into how increased production of biofuels will impact the agricultural sector and the general economy. All research is in agreement that total biomass production will be required to increase to meet food and fuel demands. The increase in biomass will, of necessity, require increased use of fertilizers. Research on fertilizer demand has been scarce over the last decade.  Because of the recent increase in the demand for grain crops and livestock in an era with little excess capacity in commodity production, the pressure to increase output will fall to increased use of fertilizers.   In addition,...
Tipo: Presentation
Palavras-chave: Nitrogen demand; Corn production; Fertilizer prices; Biofuel production.; Agricultural and Food Policy; Production Economics; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119798

Two New Simple Bibliometric Indexes to Better Evaluate Research in Economics
Provedor de dados: 31
Autores: Anania,   Giovanni; Caruso,   Annarosa.
The paper proposes two new simple indexes - the k and w indexes - to assess a scientist’s publications record based on citations. The two indexes are superior to the widely used h index (Hirsch, 2005), as they preserve all its valuable characteristics and try to overcome one of its known major shortcomings, i.e. that it uses only a fraction of the information contained in a scientist’s citations profile and, as a result, does not show a sufficiently fine ‘granularity’ (the h index is defined over the set of positive integers) to allow a fully satisfactory ranking of scientists. This problem is particularly acute in those disciplines, such as Economics, where scientific productivity and citation practices typically yield fewer citations per paper and, as a...
Tipo: Presentation
Palavras-chave: Bibliometrics; Citation statistics; H-index; Evaluating research in Economics; Research Methods/ Statistical Methods; A11.
Ano: 2012
URL: http://purl.umn.edu/124116

Conservation values and management preferences for the Ningaloo Marine Park: a discrete choice experiment
Provedor de dados: 31
Autores: Rogers,   Abbie A.
The creation of a marine reserve network is an active area of policy in Australia. Successful policy hinges on community support, which requires an understanding of what drives improvements in social welfare. Here, a discrete choice experiment is used to estimate ecological values for the Ningaloo Marine Park. A novel aspect of this research is that it not only considers the values people hold for conservation outcomes, but also their preferences for how those outcomes are achieved. By considering management process within the choice model, we gain a richer understanding of the relationship between social welfare and marine conservation. The results indicate that management process does have an impact on individuals’ preferences for conservation.
Tipo: Presentation
Palavras-chave: Discrete choice experiment; Management preferences; Ningaloo Marine Park; Teaching/Communication/Extension/Profession.
Ano: 2012
URL: http://purl.umn.edu/124431

The Application of Decision Support System to Forecast the Yield ofAgricultural Products in Taiwan
Provedor de dados: 31
Autores: Lee,   Tzong-Ru.
To make agricultural marketing policies be carried out more easily, this research establishes a decision support system by using the rice field of one farmer in Changhwa area, Taiwan as the example and explains how this decision support system works. Actually, this research has three purposes: 1.To study how key production factors affect the yield of rice variety No.67. 2.To establish a decision support system to forecast the yield of rice variety No.67. 3.To use Visual Basic to write computer programs which can simulate how yield changes if key production factors change. There are four sections in this paper: literature review, the establishment of decision support system, example and conclusion.
Tipo: Presentation
Palavras-chave: Agribusiness.
Ano: 2000
URL: http://purl.umn.edu/123733

Prosper or Perish: Asian Poverty and the Australian Economy
Provedor de dados: 31
Autores: Fischer,   Tim.
Tipo: Presentation
Palavras-chave: Food Security and Poverty.
Ano: 2001
URL: http://purl.umn.edu/124426

The relationship between trade and price volatility in the Mexican and US maize markets
Provedor de dados: 31
Autores: Araujo-Enciso,   Sergio Rene.
The supply of maize in the Mexican market depends to a large extent from the US imports which represent a large share of the domestic consumption. Furthermore imports exhibit a seasonal pattern, and peaks are often found close to low levels of domestic production and stocks. The present research suggests that there is a link between imports and prices volatility. Below a threshold value, imports and volatility are not related, but beyond the threshold it is volatility the variable driving imports. From the results one can argue that imports have served as a measure to stabilize prices when the domestic supply is scarce.
Tipo: Presentation
Palavras-chave: Volatility; Maize; Imports; Mexico; Risk and Uncertainty; Q11; Q17.
Ano: 2012
URL: http://purl.umn.edu/122544

Democratic Institutions and Environmental Quality: Effects and Transmission Channels
Provedor de dados: 31
Autores: Romuald,   Kinda Somlanare.
This paper aims at analysing the effect of democratic institutions on environmental quality (carbon dioxide per capita, sulfure dioxide per capita) and at identifying potential channel transmissions. We use panel data from 1960 to 2008 in 122 developing and developed countries and modern econometric methods. The results are as follows: Firstly, we show that democratic institutions have opposite effects on environment quality: a positive direct effect on environment quality and a negative indirect effect through investments and income inequality. Indeed, democratic institutions attract investments that hurt environment quality. Moreover, as democratic institutions reduce income inequality, they also damage environment. Secondly, we find that the direct...
Tipo: Presentation
Palavras-chave: Democratic institutions; Air pollution; Panel data; Income inequality; Investments; Environmental Economics and Policy; O43; Q53; C23; D31; E22.
Ano: 2011
URL: http://purl.umn.edu/120396

Linear Programming and Future Landuse Scenarios: An Irrigated Catchment Case Study
Provedor de dados: 31
Autores: Gyles,   Oliver; Montecillo,   Olive P.
Potential for change in the mix of irrigated enterprises was estimated for a catchment in the Shepparton irrigation region using linear programming. The model allocated resources to maximise net income in each of the next five decades as if the catchment were one farm. Change was driven by price trends and productivity and constrained by water resources, land capability and investment capital. On the basis of the assumptions implicit in the model and sensitivity testing carried out, it appears more likely that there will be a rapid decline in irrigated cropping and pasture based meat production in conjunction with a significant increase in irrigated dairying in the first two decades, followed by an interchange of resources between dairying and new...
Tipo: Presentation
Palavras-chave: Irrigation; Enterprise; Productivity; Change; Water allocation; Policy; Economic growth; Natural resource management; Linear programming; Shepparton Irrigation Region; Land Economics/Use.
Ano: 1999
URL: http://purl.umn.edu/123809

Do Royalties: “have a disincentive effect on production"?
Provedor de dados: 31
Autores: Fraser,   Rob W.; Rygnestad,   Hild.
This paper analyses the impact of royalties in the context of a bilateral monopoly bargaining process. It is shown that the bilateral monopoly model is characterised by two distinct forms which are distinguished by the shape of the seller’s marginal cost function, and that the view that royalties have a disincentive effect on production is unfounded for one of these forms. It is argued that the forms of bilateral monopoly can be differentiated by identifying the direction of the observed correlation between movements in traded prices and quantities. This proposal is investigated in the context of the Australian iron ore and coal industries, and it is suggested that, in the case of iron ore, royalties do not have a disincentive effect on production.
Tipo: Presentation
Palavras-chave: Production Economics.
Ano: 1999
URL: http://purl.umn.edu/123804

Minimizing geographical basis risk of weather derivatives using a multi-site rainfall model
Provedor de dados: 31
Autores: Ritter,   Matthias; Musshoff,   Oliver; Odening,   Martin.
Weather risk is one of the main causes for income fluctuation in agriculture. Since 1997, the economic consequences of weather risk can be insured with weather derivatives, which are offered for many different weather events, such as temperature, rainfall, snow or hurricanes. It is well known that the hedging effectiveness of weather derivatives is interfered by the existence of geographical basis risk, i.e., the deviation of weather conditions at different locations. In this paper, we explore how geographical basis risk of rainfall based derivatives can be reduced by regional diversification. Minimizing geographical basis risk requires knowledge of the joint distribution of rainfall at different locations. For that purpose, we estimate a daily multi-site...
Tipo: Presentation
Palavras-chave: Management; Weather risk; Regional diversification; Portfolio weights; Risk and Uncertainty; G11; Q14; G32.
Ano: 2012
URL: http://purl.umn.edu/122527

Explaining farmers’ monitoring of sustainability indicators: a bore-ing example for salinity in Western Australia
Provedor de dados: 31
Autores: Marsh,   Sally P.; Burton,   Michael P.; Pannell,   David J.
Dryland salinity is one of the most pressing land management problems in Western Australia. A number of projects are in progress to provide a more comprehensive picture of the location and extent of potentially saline areas in the landscape. Associated with some of these projects, a large number of bores (piezometers) have been installed or are being installed throughout the agricultural area to provide information on depth to groundwater and changes in water levels over time. These bores provide information about whether and when the ground water will reach the surface, causing losses of agricultural production through salinisation of soils. Using data from the Jerramungup Land Conservation District (LCD) we explore factors influencing the behaviour of...
Tipo: Presentation
Palavras-chave: Sustainability indicators; Environmental indicators; Resource monitoring; Economics of information; Hydrology; Dryland salinity; Western Australia; Farm Management; Land Economics/Use.
Ano: 2000
URL: http://purl.umn.edu/123702

Antecedents to Biomass Procurement: The Essentials for Producer Participation
Provedor de dados: 31
Autores: Hoque,   Mohammad Mainul; Artz,   Georgeanne M.; Martens,   Bobby J.; Jarboe,   Darren H.
Tipo: Presentation
Palavras-chave: Agribusiness; Crop Production/Industries; Land Economics/Use; Production Economics; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124355

Professor Derek Edward Tribe AO OBE
Provedor de dados: 31
Autores: Vercoe,   John E.
Tipo: Presentation
Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 2003
URL: http://purl.umn.edu/124000

FISH WARS: SCIENCE IS SHAPING A NEW PEACE AGENDA
Provedor de dados: 31
Autores: Williams,   Meryl J.; Sze,   Choo Poh.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123870

Farmers’ Attitudes to GM Crops
Provedor de dados: 31
Autores: Montemayor,   Raul Q.
Farmers will generally support and patronize technologies, including those that utilise genetic modification, to the extent that these reduce their costs of production, improve yields, enhance the quality and acceptability of their products, and increase their incomes and overall economic welfare. Farmers would, however, have special concerns and apprehensions regarding long-term access to GM seeds and other modern technologies of their choice, especially if proprietary rights over such technologies are controlled by and/or concentrated in a few large companies. GM technology may also turn out to be too expensive or complicated for small resource-poor farmers to use, or may not yield expected results due to the lack of support facilities and structures in...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2002
URL: http://purl.umn.edu/123931

Grower perceptions of the impact of protein premiums and discounts for wheat
Provedor de dados: 31
Autores: Petersen,   Elizabeth H.; Fraser,   Rob W.
This paper presents results of a survey of Western Australian wheat growers designed to elicit perceptions of the impact of protein premiums and discounts for wheat on income, utility and off-farm risk management. The results indicate that a grower’s perception of the scheme’s impact on expected income and utility depends on that grower’s expected protein level. Additionally, growers do not perceive protein premiums and discounts to have affected the variance of income, or their willingness-to-pay for a forward contract. These latter findings are contrary to previous studies of actual rather than perceived effects. However, the perceptions of growers are understandable given that the scheme’s effect on the variance of income is small relative to its effect...
Tipo: Presentation
Palavras-chave: Protein premiums and discounts; Wheat; Survey; Willingness-to-pay; Crop Production/Industries; Farm Management.
Ano: 2000
URL: http://purl.umn.edu/123725

Rethinking the Externality Issue for Dryland Salinity in Western Australia
Provedor de dados: 31
Autores: Pannell,   David J.; McFarlane,   Donald J.; Ferdowsian,   Ruhi.
Dryland salinity has been conceived of as a problem involving massive off-site impacts and therefore requiring coordinated action to ensure that land managers reduce those off-site impacts. In economic terms, salinity is seen as a problem of market failure due to externalities, including external costs from one farmer to another and from the farm sector to the non-farm sector. In this paper, we argue that, at least in Western Australia (WA), externalities are much less important as a cause of market failure than has been widely believed. If all externalities from salinity in WA were to be internalised, the impact of this on farm management would be small. There are a number of factors contributing to this conclusion, both hydrological and socioeconomic....
Tipo: Presentation
Palavras-chave: Farm Management; Marketing.
Ano: 2000
URL: http://purl.umn.edu/123715

Food Expenditures in Rural Households in the Northern Region of Ghana
Provedor de dados: 31
Autores: Meng,   Ting; Florkowski,   Wojciech J.; Kolavalli,   Shashidhara; Ibrahim,   Mohammed.
The objective of the paper is to identify farmer and farm characteristics that determine the food expenditure in rural households in the Northern Region of Ghana. The results indicate income, implicit wealth, age, family structure, cultivation staple or cash crop, and buying dry goods in bulks are the major determinants.
Tipo: Presentation
Palavras-chave: Northern Ghana; Farm characteristics; Food expenditure; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/119716

Beach Quality and Recreational Values: A Pictorialized Stated Preference Analysis of Residents and Tourists
Provedor de dados: 31
Autores: Penn,   Jerrod; Hu,   Wuyang; Cox,   Linda J.; Kozloff,   Lara.
Much of Hawaii’s economy relies on its unique marine environments, which are threatened by degradation from stormwater runoff. Using a stated preference method of choice-based conjoint (CBC) analysis, based on stylized photographs, this study examines both residents’ and visitors’ marginal value for levels of attributes associated with Hawaiian beach recreation. Each attribute (sand quality, water quality, congestion and water safety conditions) was significant for both residents and tourists, with water quality being the single most important attribute. There is little distinction between resident and tourist marginal value, except for a greater value lost for below average water quality among tourists.
Tipo: Presentation
Palavras-chave: Nonmarket Valuation; WTP; Beach; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119813

A Computer Simulation Model of Knowledge Management in Small and Medium Agri-Food Enterprises
Provedor de dados: 31
Autores: Martinez Soto,   Moises E.; Monroy,   Carlos Rodriguez; Fuentes-Pila,   Joaquin; Morris Diaz,   Anne; Araujo,   M. Gil.
System dynamics is an appropriate tool to build management models due to its ease of application in solving unstructured problems. In the twenty-first century the sustainability of organizations is influenced by the way it manages its knowledge. In this sense, knowledge management (KM) represents a strategy that contributes to improving the production supply chain (SC) of the agri-food industry (AFI). The objective of this research is to develop a computer model to simulate the effect of KM on the production of AFI. The methodology applied was that of the system dynamics by using the Vensim PLE ® v. 5.10 software, whose determining indicators were selected through an empirical study of KM in the SC of precooked corn flour industry in Venezuela. The study...
Tipo: Presentation
Palavras-chave: Small and Medium Enterprises; System Dynamics; Supply Chain; Knowledge Management; Food Industry.; Agribusiness; Farm Management; Food Consumption/Nutrition/Food Safety; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods.
Ano: 2011
URL: http://purl.umn.edu/122029

Role of Sensory Attributes in the Food Marketing: An Exploratory Analysis in the Italian Organic Food Producers
Provedor de dados: 31
Autores: Asioli,   Daniele; Canavari,   Maurizio; Pignatti,   Erika.
This paper explores in-depth sensory experiences, expectations and perceptions of organic producers regarding the role played by sensory properties in organic market, using a qualitative marketing research technique. Ten in-depth interviews supported by semi-structured questionnaire were performed in Italy during 2009. Findings shows that organic producers stated that sensory tests are mainly carried out empirically, they are not systematic and often performed by non trained assessors, even if they are completely aware of the importance of sensory information. Interviewees think that sensory attributes may play a primary or at least complementary role in consumer choice in order to adding-value and drivers for purchase motivations, but at the same time...
Tipo: Presentation
Palavras-chave: Organic food; Sensory attributes; Organic food producers; Sensory marketing; Organic consumers; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Marketing.
Ano: 2011
URL: http://purl.umn.edu/121996

Impact of Innovativeness and Environmental Stewardship on Adoption of Energy Crops
Provedor de dados: 31
Autores: Gedikoglu,   Haluk.
The Energy Independence and Security Act of 2007 set a renewable fuel standard of 36 billion gallons of biofuel production by 2022, of which 21 billion gallons are to come from cellulosic sources, such as Switchgrass and Miscanthus.The objective of this study is to measure the impact of innovativeness and environmental stewardship on farmers’ willingness to grow Switchgrass and Miscanthus.The results of the current study show that innovative farmers are not more willing to grow Switchgrass or Miscanthus than late adopters and laggards. Farmers’ environmental stewardship is found to have a negative impact on willingness to grow Switchgrass and Miscanthus
Tipo: Presentation
Palavras-chave: Energgy Crops; Innovativeness; Environmental Stewardship; Ordered Probit; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124323

Price and Expenditure Elasticities for Vegetables in an Urban Food Desert
Provedor de dados: 31
Autores: Weatherspoon,   Dave D.; Dembele,   Assa S.; Weatherspoon,   Lorraine J.; Coleman,   Marcus A.; Oehmke,   James F.
Food deserts are associated with lower quality diets and higher obesity rates. Vegetable consumption is key to a healthy diet, reduced obesity and improved health outcomes. Existing research provides little guidance for improving such food environments due to lack of adequate consumption data. This paper addresses this by estimating vegetable demand elasticities for a food-desert community in Detroit, relying on data from a natural experiment. Expenditure played a greater role in determining purchasing behavior than prices. Both elasticities were larger than the national average. Consequently, any policy that increases income or reduces prices could have a significant impact.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123392

Do energy prices stimulate food price volatility? Examining volatility transmission between US oil, ethanol and corn markets
Provedor de dados: 31
Autores: Gardebroek,   Cornelis; Hernandez,   Manuel A.
This paper examines volatility transmission in oil, ethanol and corn prices in the United States between 1997 and 2011. We follow a multivariate GARCH approach to evaluate the level of interdependence and the dynamics of volatility across these markets. Preliminary results indicate a higher interaction between ethanol and corn markets in recent years, particularly after 2006. We only observe, however, significant volatility spillovers from corn to ethanol prices but not the converse. We also do not find major cross-volatility effects from oil to corn markets. The results do not provide evidence of volatility in energy markets stimulating price volatility in grain markets.
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122476

Export Demand Function Estimation for U.S. Raisins
Provedor de dados: 31
Autores: Soltani,   Mohammad; Saghaian,   Sayed H.
Raisins are one of important products of California. Almost all U.S. raisins are produced near Fresno California’s central valley due to its hot growing season and abundant water supply. U.S. is the leading exporter of raisins in the world. This paper investigates the export demand function of U.S. raisins for the top five importer countries. The relationship of quantity exported with export price, other exporters’ prices, real income, and exchange rate is estimated. The model used is a logarithmic panel data model for the 1992-2008 periods. The model used is in log-log format to determine own- price, cross price, and income elasticities for the commodity.
Tipo: Presentation
Palavras-chave: International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/119860

Strategies for the Agro-food Sector
Provedor de dados: 31
Autores: Rosa,   Franco.
The agro-food sector is receiving a great deal of attention for topics of general interest as the food quality, security and safety, alternative uses of crops in food/feed/fuel, growing concern for GHG (Green House Gas) emission, LCA (Life Cycle Assessment), energy consumption. In the EU policies directed to implement sustainable local agro-food systems, the AFSC (agro-food supply chain) is emerging as the central issue in planning integrated farm-food activities performed in a space-time dimension. In this paper it is presented a methodology of regional planning the AFSC supported by empirical evidences about the region FVG (Friuli Venezia Giulia). The reference product is the Mais a crop largely cultivated in the region. A composite information system is...
Tipo: Presentation
Palavras-chave: Planning procedure; Regional development plan; Multifunctional approach; Agri-food supply chain; Simulation; Agribusiness; Farm Management; Food Consumption/Nutrition/Food Safety.
Ano: 2011
URL: http://purl.umn.edu/122023

An Economic Risk Analysis of No-till Management for the Rice-Soybean Rotation System used in Arkansas
Provedor de dados: 31
Autores: Hristovska,   Tatjana; Watkins,   K. Bradley; Anders,   Merle M.
Arkansas is the top domestic rice producer, representing nearly half of total U.S. rice production. Sediment is one of the major pollutants in rice producing areas of Arkansas. In order to mitigate this problem no-tillage management is often recommended. No-tillage is not well understood by farmers who believe that no-till is less profitable due to lower yields offsetting cost savings. This study evaluates the profitability and variability of no-till in the typical rice-soybean rotation used in Arkansas rice production. Crop yields, prices and prices for key production inputs (fuel and fertilizer) are simulated for the rotation, and net return distributions for rice, soybean and the two-year rotation are evaluated for no-till and conventional till using...
Tipo: Presentation
Palavras-chave: Simulation; Rice-soybean; No tillage-profitability; Risk analysis; Environmental Economics and Policy; Farm Management; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119676

Consumers’ willingness to pay for a functional food
Provedor de dados: 31
Autores: Veneziani,   Mario; Sckokai,   Paolo; Moro,   Daniele.
In recent years food manufacturers have been devoting a large portion of their R&amp;D budget to the development off functional foods, as a competitive strategy within food demand markets; on the other hand, consumers, despite functional foods exhibit a significant level of information asymmetry, show an increasing attention towards them,recognizing their role in preventing or reducing health risks and/or improving other general functions of the organism.The objective of this paper is to evaluate the Italian consumers’ willingness-too-pay for functional attributes in a food product (a probiotic yogurt with the addition of catechines). For this purpose, a web-based stated choice experiment involving a representative sample of 6600 Italian consumers has been...
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/124101

Climate Change, Water Flows and the Environment
Provedor de dados: 31
Autores: Bates,   Bryson.
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/124465

Incentive Design for Introducing Genetically Modified Crops
Provedor de dados: 31
Autores: Kingwell,   Ross S.
The introduction of genetically modified (GM) crops raises several issues. This paper looks at incentives required to reduce problems of illegal and improper use of GM proprietary technology used in growing GM crops. A simple model of producer behaviour describes some key influences of a farmer’s response to GM crops. The model is illustrated using the example of INGARD cotton grown in Australia. The key findings are that legitimate adoption of a GM crop by a farmer depends on their attitude to risk, the relative profitability of growing the GM crop, the probability of detection of illegal or improper use of the GM crop and the severity of fines successfully imposed for fraud or contract breaches. In the case of INGARD cotton the problem of illegal and...
Tipo: Presentation
Palavras-chave: Consumer/Household Economics; Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123687

Could Society’s willingness to reduce pesticide use be aligned with Farmers’ economic self-interest?
Provedor de dados: 31
Autores: Boussemart,   Jean-Philippe; Leleu,   Herve; Ojo,   Oluwaseun.
In the context of the agreement of about 50% reduction in pesticide uses according to the accords du “Grenelle de l’environnement” in France, the central part of this study involves the assessment of agricultural intensification (AI) and agricultural extensification (AE) processes in crop activities.This is done with reference to pesticide uses per ha thereby helping to proffer a solution to the lingering questions of farmers as regards the use of inputs in an intensified manner or otherwise. With respect to this, a sample of 600 farms in the Meuse department was observed over a 12-year period. The analysis was essentially to assess cost efficiency dominance between the two technologies AE and AI using non parametric cost-functions which involves different...
Tipo: Presentation
Palavras-chave: Agricultural intensification (AI); Agricultural extensification (AE); Pesticide reduction; Environmental performance; Non parametric cost-functions; Environmental Economics and Policy; Farm Management.
Ano: 2011
URL: http://purl.umn.edu/120402

Mudancas em Infra-estrutura, Agencia Humana e Resiliencia em Sistemas Socio-ecologicos: Arcabouço Teórico e Abordagem Metodologica
Provedor de dados: 31
Autores: Perz,   Stephen G.; Valho,   Lucas Araujo Car; Passos,   Veronica; Rocha,   Karla; Silveira,   Marcos.
Propomos aumentar o conhecimento sobre os impactos da construção e melhoramento em obras de infra-estrutura, nesse caso em particular das estradas, e nas relações entre as pessoas e a floresta. Este tema multifacetado será abordado por um complexo sistema de interações, com ênfase na dinâmica das redes ecológicas, sócio-econômicas e institucionais. Integraremos estes dados de pontos multi-temporais e espacialmente explícitos no sentido de compilar um banco de dados que promova um melhor entendimento da complexa dinâmica das mudanças trazidas por melhoria na infra-estrutura viária. Esta base de dados integrada permitirá modelagem espaço-temporal para comprovar várias expectativas sobre sistemas complexos, como por exemplo, impactos decorrentes de nova...
Tipo: Presentation
Palavras-chave: Infra-estrutura; Resiliencia; Conectividade; Brasil; Amazonia; Infrastructure; Resilience; Connectivity; Brazil; Amazon; Community/Rural/Urban Development.
Ano: 2008
URL: http://purl.umn.edu/119004

Contributing to the Analysis of the Sustainability Management in the Organization of the Green Procurement: Theoretical Elements and Empirical Evidence from a Case Study
Provedor de dados: 31
Autores: Pampanini,   Rossella; Martino,   Gaetano.
The introduction of the environmental dimensions within the Public Administration procurements and contracts is increasingly held as contribution to the sustainability of the chains governance. The so called Green Procurement (COM (2001) 274, l.n.488/1999) thus represents an important institutional innovation in Agri-Food Chains and it may potentially act as driver of changing toward a better rooted managerial approach to sustainability.
Tipo: Presentation
Palavras-chave: Agribusiness; Agricultural and Food Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Research Methods/ Statistical Methods.
Ano: 2011
URL: http://purl.umn.edu/121994

Volatility in US and Italian agricultural markets, interactions and policy evaluation
Provedor de dados: 31
Autores: Rosa,   Franco; Vasciaveo,   Michela.
The aim of this paper is to analyse the volatility and interactions among prices of agricultural commodities in Italy and US using the time series analysis. The cross market interactions are examined to test the hypothesis that the increased volatility of agricultural prices has been caused by crude oil price, then the cointegration and causality among different markets is also tested. For this analysis the spot prices of wheat, corn, soybeans in US and Italy and crude oil prices spanning from 2002 to 2010 are used. The results suggest the following considerations: i) the existence of causality in US markets with exogeneity of the oil on the US agricultural commodities, ii) evidence of cointegration between US and Italian commodities, suggesting a...
Tipo: Presentation
Palavras-chave: Time series analysis; Agricultural commodity prices; Linear and nonlinear Granger causality; Market integration; Risk and Uncertainty; C14; C19; Q13.
Ano: 2012
URL: http://purl.umn.edu/122530

Optimal Fertilizer Carryover and von Liebigs Law of the Minimum
Provedor de dados: 31
Autores: Beard,   Rodney.
von Liebigs law of the minimum is frequently proposed as a model of crop production which captures agronomic reality better than substitutional production functions. Whilst many studies of the law of the minimum and optimal fertilizer carryover have been undertaken separately, the law of the minimum for optimal fertilizer carryover has it would appear until now not been analysed, because of the non-differentiable nature of the agricultural producers objective function. In this paper I develop an optimal control model of fertilizer carryover subject to the law of the minimum using the differential inclusion approach to optimal control.
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/123600

On trade efficiency in the Ethiopian agricultural markets
Provedor de dados: 31
Autores: Quattri,   Maria A.
The availability of enabling institutions, information systems and infrastructure is a precondition to enhance agricultural markets’ efficiency, and make market actors less vulnerable to price instability. This paper investigates whether the focus on institutional and technological upgrading is enough to make Ethiopian agricultural markets more efficient. In particular, given that a requirement for exchange efficiency is the lack of unexploited mutually beneficial spatial arbitrage opportunities, we look for evidence of increasing returns to transaction size and returns to scale in transport using detailed trader surveys collected in 2001 and 2007. Whilst transport costs could be reduced by assembling loads and avoiding trans-shipments for the...
Tipo: Presentation
Palavras-chave: Ethiopia; Market efficiency; International Development; Risk and Uncertainty; O13; Q13.
Ano: 2012
URL: http://purl.umn.edu/122512

Evaluating the Benefits of Conserved Crop Germplasm in PNG
Provedor de dados: 31
Autores: Milne,   Mary; Godden,   David P.; Kennedy,   John O.S.; Kambuou,   Rosa N.
The objectives of the paper are twofold: to review valuation methods for plant genetic resources and to develop methods to estimate the past and potential future benefits, both domestic and international, of existing germplasm collections in Papua New Guinea (PNG). The analysis concentrates on PNG’s more important plant subsistence food crops: banana, sweet potato, and taro together with aibika. The paper documents the movement of germplasm in the food crops both within PNG and to international collections. Curators of and breeders using PNG germplasm material are surveyed concerning the future usefulness of this material, and their responses are reported and evaluated. Benefits are valued in terms of the value of future breeding in these species.
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/124091

Sense and Nonsense in Dairy Farm Management Economic Analysis
Provedor de dados: 31
Autores: Ferris,   Alexandria; Malcolm,   Bill.
The standard analytical approaches and methods of farm management economics are simple, sensible and powerful. Still, examples of inappropriate nonsensical, approaches to farm management economics questions proliferate. In this paper, the focus is on some inappropriate, nonsensical, approaches to socalled management analysis of dairy farming operations. Included in the analytical eccentricities which abound are such things as trying to evaluate farm performance and changes but not distinguishing between cash (financial feasibility) and profit (economic efficiency), nor considering the time value of earning of capital invested; trying to estimate the cost of pasture; trying to show to lift productivity on one family farm by having a good hard look at the...
Tipo: Presentation
Palavras-chave: Livestock Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123803

The Optimal Season Length for a Sugar Mill in the Australian Sugar Industry
Provedor de dados: 31
Autores: Beard,   Rodney; Wegener,   Malcolm K.
In this paper we present a model of the optimal crushing season length for sugar cane. The approach taken is to view the optimal season length problem as an optimal stopping problem for both the Mill and a representative grower. We formulate the optimal stopping problems for both Mill and grower based on \real option" theory using Ito calculus. Because the interests of the Mill and growers do not coincide this results in a stochastic differential game of optimal stopping. We solve the model numerically using a finite difference algorithm.
Tipo: Presentation
Palavras-chave: Sugarcane Harvesting; Seasonality; Real Option Theory; Optimal Stopping; Ito Calculus; Stochastic Differential Games.; Production Economics.
Ano: 1999
URL: http://purl.umn.edu/123762

Policy Impact Analysis on Investments and Disinvestments under Competition: A Real Options Approach
Provedor de dados: 31
Autores: Feil,   Jan-Henning; Musshoff,   Oliver.
In consequence of changes in general conditions, a higher level of investments and disinvestments in agriculture can be expected. To date, however, there are no policy impact analyses on both investments and disinvestments in competitive agricultural markets in a dynamic-stochastic context. This paper aims to develop a conceptual real options market model, which allows the impact assessment of different political schemes on investment and disinvestment thresholds and the sectoral welfare. Exemplarily, the effects of price floors, investment subsidies and production ceilings are analysed. The results show that the consideration of limited reversibility, that is disinvestments, is of relevance as it can impact the assessment of specific policies.
Tipo: Presentation
Palavras-chave: Real options; Competition; Policy impact analysis; Genetic algoritms; Marketing; Political Economy.
Ano: 2012
URL: http://purl.umn.edu/124294

Effect of Advocacy Information on Consumer Preferences for Cage Free Eggs: A Neuroeconomic Analysis
Provedor de dados: 31
Autores: McFadden,   Brandon R.; Lusk,   Jayson L.; Crespi,   John M.; Cherry,   J. Bradley C.; Martin,   Laura E.; Bruce,   Amanda S.
Understanding how consumers respond to information about animal production systems is important both for animal activist groups and for agricultural producers alike.  This is particularly true as information conveyed over platforms such as YouTube both decrease the cost of communication and increase the speed at which interested parties can communicate with the public.  The emerging field of neuroeconomics, which integrates the findings of economics, psychology, and neuroscience, can provide unique insights into consumer responses.  The purpose of this research is to enhance understanding of consumers’ perceptions of farm animal welfare by capitalizing on recent developments in economics and neuroscience.
Tipo: Presentation
Palavras-chave: Animal Welfare; Video Information; Neuroeconomics; Institutional and Behavioral Economics; Marketing.
Ano: 2012
URL: http://purl.umn.edu/124048

Valuing Indigenous Biodiversity
Provedor de dados: 31
Autores: Krausse,   Michael; Alexander,   Robert R.
This paper explores the effect of an individual’s knowledge of biodiversity on the nature of his or her preferences for its preservation. Previous research suggests that individuals have a limited understanding of the concept of biodiversity and that some may be unwilling to trade-off changes in biodiversity against income. We hypothesize that the way in which individuals understand biodiversity is such that meaningful preferences for biodiversity preservation are more likely to be expressed for large scale non-marginal changes (i.e. a regional or greater scope geographically and at a genus or greater scope genetically). Similarly we suggest that individuals can express preferences for different management regimes or policies at a large scale but are...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123828

Agricultural trade for food security in Africa: A Ricardian model approach
Provedor de dados: 31
Autores: Diagne,   Mandiaye; Abele,   Steffen; Diagne,   Aliou; Seck,   Papa Abdoulaye.
Regionalism and food security is a relatively neglected topic with very limited literature. We use a Ricardian trade model with multiple goods and countries which embeds a structure of gravity equation and yield variability. Our study shows that integration with African markets of staple foods is associated with higher growth, underpinning the need for growth strategies to emphasize scaling up and diversifying exports within Africa. Africa needs to unlock its high potential untapped land and fill up the yield gap.  We found as well that enhanced competitiveness and reduced barriers to trade are the two critical areas of action.
Tipo: Presentation
Palavras-chave: Ricardian model; Yield variability; Agricultural trade; Staple foods; Africa; Agricultural and Food Policy; Food Security and Poverty; International Relations/Trade.
Ano: 2012
URL: http://purl.umn.edu/123842

Water, Food and Environment: A Development Dilemma
Provedor de dados: 31
Autores: Rijsberman,   Frank; Molden,   David J.
As much as seventy times more water is needed to grow food than for domestic use. Severely waterscarce countries such as Egypt do not have enough water to grow their own food and need to import food from elsewhere. Countries like the USA, Australia, China, India, Mexico and Turkey have made massive investments to build dams and develop irrigation systems. As a direct consequence, the famines predicted for India have not occurred and world food prices are lower than ever. But rivers are drying up, groundwater levels are falling dramatically, and water pollution is rampant near most Asian cities. All water that falls as rain serves a purpose in nature. If farmers don’t have an incentive to conserve water, over-use is the likely consequence and nature pays...
Tipo: Presentation
Palavras-chave: Environmental Economics and Policy; Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/124461

Changing Patterns of Wheat Production and Consumption in China: Trade Implications
Provedor de dados: 31
Autores: Tian,   Wei-Ming; Zhou,   Zhang-Yue; Cao,   Yi-Yang.
In the 1980s and early 1990s, wheat imports accounted for about four-fifths of China's import of cereals, and imported wheat accounts for about 30 percent of wheat supply. As a result of the many recent developments in Chinese government’s policy on wheat production and marketing as well as China’s WTO accession negotiations, how the Chinese wheat market will evolve presents an interesting and important area for policy makers and major wheat trading companies both within and outside China. In this paper, we highlight recent changes in China's wheat production and consumption patterns and marketing arrangements. We then, by taking into account of likely government policy scenarios, analyse implications of such changes on wheat market development in China...
Tipo: Presentation
Palavras-chave: Crop Production/Industries; Food Consumption/Nutrition/Food Safety.
Ano: 2000
URL: http://purl.umn.edu/123739

Managing Nitrogen and Phosphorus Nutrients for Switchgrass Produced for Bioenergy Feedstock in Phosphorus-Deficient Soil
Provedor de dados: 31
Autores: Haque,   Mohua; Biermacher,   Jon T.; Kering,   Maru K.; Guretzky,   John A.
There is limited information available explaining the agronomic and economic relationships between yield and nitrogen and phosphorus applications to growing switchgrass produced in phosphorus-deficient soils.  The objective of this study was to determine the effects of nitrogen and phosphorus fertilizers on feedstock yield and measures of expected total cost, gross revenue, net return, and breakeven price of feedstock  produced in phosphorus-deficient soils in the southern Great Plains. Data were collected from a three-year, two-location agronomic field study conducted in south-central Oklahoma. Two discrete nitrogen treatments (0 and 134 kg ha-1) and four discrete phosphorus treatments (0, 30, 60 and 90 kg ha-1) were randomly assigned to small plots...
Tipo: Presentation
Palavras-chave: Bioenergy feedstock; Economics; Phosphorus-deficient soils; Nitrogen; Switchgrass; Crop Production/Industries; Environmental Economics and Policy; Production Economics.
Ano: 2012
URL: http://purl.umn.edu/119765

World Fish Supplies, Outlook and Food Security
Provedor de dados: 31
Autores: Williams,   Meryl J.
More people in the world to feed, rising wealth and a new focus on healthy foods are generating a rising tide of demand for fish. This rise in demand is happening just when the main sources of fish and other aquatic life are struggling to keep pace, and prices of many aquatic commodities are increasing. Fish is caught from natural or wild fisheries stocks, from enhanced and restored fisheries stocks and is cultured on farms. All sources of supply present economic opportunities but each faces major problems. Most natural fish stocks are heavily depleted already, and continue to be over-exploited because fisheries management is inadequate to counter the drive to exploit. Aquaculture has made great progress in some countries, largely driven by markets and...
Tipo: Presentation
Palavras-chave: Food Security and Poverty; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/124062

Facilitating healthy choice at the point of sale: fine-tuning nutrition labels versus editing choice?
Provedor de dados: 31
Autores: Aschemann-Witzel,   Jessica.
Obesity rates in Europe have lead to a debate on what factors influence consumers’ in-store food choices most. This study aims to assess the contribution of nutrition labels against the impact of choice sets to facilitating healthy decision-making. Different front-of-pack labeling formats were implemented on products that were presented to representative consumer samples. Choice sets and product categories were systematically varied. The results indicate that nutrition information in general contribute only little, while extending choice sets with healthier product alternatives of the same category – i.e., ‘choice editing’ – largely contributes to healthy decision-making.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/122731

Interrelationship and Volatility Transmission between Grain and Oil Prices
Provedor de dados: 31
Autores: Kong,   Minji; Han,   Doo Bong; Nayga,   Rodolfo M., Jr.
This study analyzes the interrelationship and volatility between grain and oil prices. Specifically, the objective of this study is to investigate the volatility transmission mechanism of grain prices with oil prices, under the assumption that an increase in crude oil prices not only affects corn and soybean prices but also other grain commodity prices such as wheat and rice. The results presented in this paper suggest several conclusions. First, there is a short-run relationship between the grain market and oil prices, which implies that recent co-movements of oil and grain prices are just a temporary phenomenon. Second, grain prices, except for rice, are affected by oil prices to some degree. Finally, the volatilities of oil prices influence the...
Tipo: Presentation
Palavras-chave: Grain prices; Volatility; Volatility Transmission; VAR; GARCH; Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124377

The Demand for Meats in Indonesia: A Censored Regression Approach
Provedor de dados: 31
Autores: Hutasuhut,   Maradoli; O'Donnell,   Christopher J.; Chang,   Hui-Shung (Christie); Griffith,   Garry R.; Doran,   Howard E.
In this study, meat consumption and socio-demographic data from the 1990, 1993 and 1996 SUSENAS Household Food Expenditure and Consumption Surveys were employed to estimate the demand for meats in Indonesia. The provinces of DKI Jakarta and West Java were chosen as the areas of study because of the population, level of meat consumption and the availability and quality of information in these two provinces. Several statistical and econometric procedures were performed. Firstly, a cluster analysis (Nicol, 1991) was used to aggregate the 16 meat types recorded in the SUSENAS into four Meat Groups (MG-1, 2, 3 and 4). Secondly, a double truncation procedure was used to estimate the linear approximation of the Almost Ideal Demand System (LA/AIDS) because of the...
Tipo: Presentation
Palavras-chave: Censoring; Cluster analysis; Cross-sectional data; Linearised AIDS.; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety.
Ano: 2000
URL: http://purl.umn.edu/123666

Labor Supply of Fishermen: An Empirical Analysis
Provedor de dados: 31
Autores: Stafford,   Tess.
When income effects are small, standard life-cycle models of labor supply predict a positive response in hours worked to increases in remuneration. However, several re- cent studies have found negative wage elasticities, casting doubt on the standard labor supply model. This paper aims to resolve some of this controversy by examining the responsiveness of the daily labor supply of fishermen to transitory variations in the wage using rich data from the Florida spiny lobster fishery. The data include complete records of all fishing trips made by Florida lobster fishermen over a twenty-year period and include two measures of effort - hours at sea and, when relevant, number of traps pulled - which makes it possible to look at the intensive labor supply margin...
Tipo: Presentation
Palavras-chave: Labor and Human Capital.
Ano: 2012
URL: http://purl.umn.edu/124450

Effects of Market and Policy Shocks on the Canadian and U.S. Cattle and Beef Industries
Provedor de dados: 31
Autores: Twine,   Edgar; Rude,   James.
The paper examines the impact of four exogenous shocks – exchange rate appreciation, feed price escalation, mandatory country of origin labeling, and economic recession – on the Canadian and U.S. beef cattle industries using a multi-market partial equilibrium model. Impacts on the U.S. industry are found to be relatively small compared to those on the Canadian industry. Country of origin labeling, and feed price escalation account for the largest decline in the welfare of Canadian cattle producers.
Tipo: Presentation
Palavras-chave: Canadian and U.S. beef cattle industries; Exogenous shocks; Partial equilibrium model; Demand and Price Analysis; International Relations/Trade; Livestock Production/Industries; Marketing; Q11; Q13; Q17.
Ano: 2012
URL: http://purl.umn.edu/123565

Addressing Additionality in REDD Contracts when Formal Enforcement is Absent
Provedor de dados: 31
Autores: Salas,   Paula Cordero; Roe,   Brian E.; Sohngen,   Brent.
Tipo: Presentation
Palavras-chave: Financial Economics; Public Economics.
Ano: 2012
URL: http://purl.umn.edu/124505

Foreword
Provedor de dados: 31
Autores: Andrew,   Neil.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/124455

Assessing the potential for a payments for environmental services system in The Fond D'or Watershed, St. Lucia
Provedor de dados: 31
Autores: Pantin,   Dennis; Ramjattan,   Donna.
Bridgetown, Barbados 6th – 10th July, 2009
Tipo: Presentation
Palavras-chave: St. Lucia; Payment for Agricultural Services; Watershed Services; Agribusiness; Environmental Economics and Policy; Q13; Q51; Q56; Q57.
Ano: 2010
URL: http://purl.umn.edu/122659

Structural Change via Threshold Effects:  Estimating U.S. Meat Demand Using Smooth Transition Functions
Provedor de dados: 31
Autores: Rodriguez,   Nestor; Eales,   James S.
Structural change remains a contentious issue in the literature. This study focuses on analyzing structural change in consumer demand for meats, which are modeled over the past half century. A standard inverse demand model is combined with a variant of the Smooth Transition Autoregressive (STAR) model. Results indicate that structural change has occurred and that con- sumers' preferences for meat are sensitive to in ation.
Tipo: Presentation
Palavras-chave: Food demand; Econometrics; Meat demand; Applied Microeconomics; Time Series; Agribusiness; Consumer/Household Economics; Demand and Price Analysis; Research Methods/ Statistical Methods.
Ano: 2012
URL: http://purl.umn.edu/124366

Electronic Commodity Market System for Food Networks
Provedor de dados: 31
Autores: Fomina,   Julia; Fomin,   Eduard.
On the agricultural market, like any other market, there are transaction costs such as “discovering what the relevant prices are, the costs of negotiating and concluding a separate contract for each exchange transaction1”, and others. According to our research the average level of transaction costs in Russia for small and medium-sized enterprises is about 28% of the total cost. If the transaction costs of agricultural market are high, in order to reduce them entrepreneurs can arrange the additional production of goods within the firm, replacing market relationships on the relations within the firm. For example, in Russia, the large grain producers often have their own storage of grain (elevators) and mills, bakeries and even shops, because it is more...
Tipo: Presentation
Palavras-chave: Commodity market; E-commerce; Food sector; Self-organizing.; Agribusiness; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; International Relations/Trade; Research and Development/Tech Change/Emerging Technologies; L81; Q13; Q17.
Ano: 2011
URL: http://purl.umn.edu/122028

Dangers of Using Political Preference Functions in Political Economy Analysis: Examples from U.S. Ethanol Policy
Provedor de dados: 31
Autores: Bullock,   David S.
Rausser and Freebairn (1974) proposed a method for empirically measuring the political power of interest groups competing in real-world political economies. In the first half of the 1990s, staunch criticism of PPF methodology appeared. Von Cramon-Taubadel (1992) obtained counter-intuitive results in PPF simulations using a simple model of EU wheat and barley policy instrument use. Bullock (1994) emphasized that PPF methodology requires that observed policy be Pareto efficient policy, which requires researchers to manipulate the dimensions of their models so that the number of interest groups is exactly one more than the number of policy instruments. He concluded “[PPF methods] need not reveal anything meaningful about interest group political power, and...
Tipo: Presentation
Palavras-chave: Political Economy; Q18; Q16; Q48.
Ano: 2012
URL: http://purl.umn.edu/124118

Pricing Fed Cattle on a Grid: An Analysis of the Incentive Mechanism over Time
Provedor de dados: 31
Autores: Fausti,   Scott W.; Wang,   Gerald; Diersen,   Matthew A.; Qasmi,   Bashir A.
Empirical results suggest that the grid premium and discount structure is slowly adjusting carcass quality incentive/disincentive market signals to encourage marketing on a grid and discourage marketing by the pen. If this trend continues, grid market share of steer and heifer slaughter volume should increase in the future.
Tipo: Presentation
Palavras-chave: Fed cattle; Grid; Marketing; Market share; Livestock production; Livestock Production/Industries; Marketing; Research Methods/ Statistical Methods; Q13.
Ano: 2012
URL: http://purl.umn.edu/119670

Dryland Wheat variety selection in the Texas High Plain
Provedor de dados: 31
Autores: Park,   Seong Cheol; Cho,   Jaesung; Bevers,   Stanley J.; Amosson,   Stephen H.; Rudd,   Jackie C.
Selecting the best wheat varieties affects producers’ profit and financial risk. This study identifies the optimal wheat variety selection using the portfolio approach at various risk aversion levels. Results showed that the optimal wheat variety selection was significantly affected by changes in levels of risk aversion of decision makers
Tipo: Presentation
Palavras-chave: Dryland; Portfolio; Risk; Wheat Variety; Farm Management.
Ano: 2012
URL: http://purl.umn.edu/119658

Farm Advisory Services for the Agro-Food Supply Chain as a Foster of Innovation: The Case of Veneto Region
Provedor de dados: 31
Autores: Ascione,   Elisa; Cristiano,   Simona; Tarangioli,   Serena.
The aim of this study is to analyze the potentiality of the extension services in agriculture, to mainstream innovation in terms of sectoral competitiveness, when integrated into the agro-food supply chain. In doing this, the case of Venetian agriculture will give empirical evidence to the assumptions of this study, serving the identification of key factors, related to the use of extension services integrated into the so-called Integrated Supply Chain Projects (ISCPs), which are emerging as influential for the performance of the agro-food chain. In principle, the extension services are integrated within the entire agricultural knowledge system, which encloses several activities such as research and experimentation, vocational training, advisory and...
Tipo: Presentation
Palavras-chave: Agribusiness; Farm Management.
Ano: 2011
URL: http://purl.umn.edu/122031

Sharing Fisheries Resource: The Size of the Pie or the Size of the Slice?
Provedor de dados: 31
Autores: McPhee,   Daryl P.; Loveday,   Ted D.
There is continual pressure from parts of the recreational sector to close commercial fisheries. This pressure is based on the belief that recreational fisheries are inherently more environmentally benign and ‘worth’ more than commercial fisheries, and that recreational fishing benefits are maximised with sole access to fisheries resources. This pressure obscures the question of whether recreational fisheries are sustainable, and whether the structures and processes are in place to ensure continual improvement in environmental performance of this sector. In this paper, we briefly review information on the environmental and economic impacts of commercial and recreational fisheries. We conclude that recreational fishing lobbyists underestimate the...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/124069

The External Costs Of Wind Farm Development On the High Plains: Are Developers Making An Effort To Minimize These Costs?
Provedor de dados: 31
Autores: Williams,   Ryan Blake.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/119821

DEFORESTATION IN THE PHILIPPINES: A CGE MODELLING APPROACH
Provedor de dados: 31
Autores: Centeno,   Maria Luz N.
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/123619

Stochastic optimal control in bio-economic simulations  A comparison of solution techniques
Provedor de dados: 31
Autores: Beare,   Stephen; Bell,   Rosalyn; Harrison,   Scott.
Uncertainty has long been recognised as an important aspect of renewable resource assessment and management. Stochastic optimal control provides a framework in which to incorporate uncertainty, whether arising from fluctuations in the biological or economic environment or from lack of a precise understanding of inter-relationships within a system. However, overlaying complex and interdependent biological, physical and economic relationships with uncertainty often results in an optimal control problem which is analytically complex. In this paper, a parametric approximation to the control equation is combined with genetic search algorithms to solve the stochastic control problem. The parametric approximation to the solution of optimal control problems is...
Tipo: Presentation
Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/123763

Determining the Variation in Certified Preconditioning Premiums for Heifers and Steer
Provedor de dados: 31
Autores: Schumacher,   Stephanie; Peel,   Derrell S.
This study applies separate hedonic models to Oklahoma Quality Beef Network data to determine differences in the value of preconditioning premiums for steers versus heifers.  Results indicate that preconditioning values are generally lower for heifers but exceed steer premiums at higher weights.  Separate treatment of steers and heifers is validated.
Tipo: Presentation
Palavras-chave: Preconditioning; Steers; Heifers; Marketing.
Ano: 2012
URL: http://purl.umn.edu/119722

IMPACT OF FOOD CONTAMINATION ON BRANDS: A DEMAND SYSTEMS ESTIMATION OF PEANUT BUTTER
Provedor de dados: 31
Autores: Bakhtavoryan,   Rafael; Capps,   Oral, Jr.; Salin,   Victoria.
A 2007 foodborne illness incident involving peanut butter is linked with structural change in consumer demand. Compensated and uncompensated own- and cross-price elasticities and expenditure elasticities were calculated for leading brands before and after the product recall using the Barten synthetic model and weekly time-series data from 2006 through 2008. Statistically significant differences in price elasticities for the affected brand, Peter Pan, were absent. After a period of 27 weeks, this brand essentially recovered from the food safety crisis. Significant differences in price elasticities were evident among non-affected brands. Hence, spillover effects and heightened competition are associated with the recall.
Tipo: Presentation
Palavras-chave: Food safety; 2007 Peter Pan recall; Demand system models; Scanner data.; Agribusiness; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; D12.
Ano: 2012
URL: http://purl.umn.edu/123755

Modeling crop area allocations in Australian broadacre agriculture
Provedor de dados: 31
Autores: Hussain,   Intizar; Liaw,   Alvin; Hafi,   Ahmed.
A model for forecasting changes in crop areas in response to changes in output prices in Australian broadacre agriculture is outlined in this paper. The crop–livestock interactions and substitution and complementary relationships among crops are modeled as a set of land allocation decisions made simultaneously but at a number of hierarchical stages. The model developed here is broader in scope than previous models of crop area response in Australian broadacre agriculture in terms of crop coverage. The method employed takes specific account of lagged relationships and producer expectations for prices. In the model, area allocation decisions at the aggregate level are also affected by rainfall. The specified equations are estimated employing the seemingly...
Tipo: Presentation
Palavras-chave: Crop Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/123817

Economic Performance of U.S. Multinational Agribusinesses: Foreign Direct Investment and Firm Strategy
Provedor de dados: 31
Autores: Garcia-Fuentes,   Pablo A.; Ferreira,   Gustavo F.C.; Kennedy,   P. Lynn.
This paper empirically assesses the sequential relationships among firm strategic factors, FDI activity, and economic performance for a sample of U.S.-based Multinational agribusinesses. The most important findings of this research is a positive direct effect of FDI on performance, the complementary effect between FDI and firm strategic factors (positive and significant interaction terms) on performance, and the positive effect of FDI on performance given some thresholds of firm strategic factors. Specifically, it provides insights about the direct effect of FDI on performance, as well as about the joint effect of firm size and FDI, marketing intensity and FDI, and capital intensity and FDI on performance. These findings provide evidence that FDI activity...
Tipo: Presentation
Palavras-chave: Economic performance; Foreign direct investment; Firm strategic factors; Agribusiness; Agribusiness; International Relations/Trade; Marketing; F230; L250.
Ano: 2012
URL: http://purl.umn.edu/119763

Heterogeneous Technologies as an Answer to Market and Price Risk: The Case of Kosovo
Provedor de dados: 31
Autores: Sauer,   Johannes; Davidova,   Sophia; Gorton,   Matthew.
This paper empirically measures the prevalence of heterogeneous technologies in a sample of small-scale agricultural producers as an answer to structural conditions and market risks. Such risks are closely linked to the effects of land fragmentation and the degree of market integration. We use the empirical case of Kosovo as a transition country to investigate the efficiency effects of land fragmentation by simultaneously considering the effects of market integration. Different to previous studies, we assume that land fragmentation and market integration lead to the prevalence of heterogeneous technologies allowing farm households to respond more efficiently to exogenous price and policy shocks given their fragmentation and subsistence situation. The...
Tipo: Presentation
Palavras-chave: Risk and Uncertainty.
Ano: 2012
URL: http://purl.umn.edu/122509

THE FEASIBILITY OF FARM REVENUE INSURANCE IN AUSTRALIA
Provedor de dados: 31
Autores: Meuwissen,   Miranda P.M.; Huirne,   Ruud B.M.; Hardaker,   J. Brian.
Arrow (1965) stated that making markets for trading risk more complete can be socially beneficial. Within this perspective, we discuss the feasibility of farm revenue insurance for Australian agriculture. The feasibility is first discussed from an insurer's point of view. Well-known problems of moral hazard, adverse selection and systemic risk are central. Then, the feasibility is studied from a farmer’s point of view. A simulation model illustrates that gross revenue insurance can be both cheaper and more effective than separate price and yield insurance schemes. We argue that due to the systemic nature of price and yields risks within years and the positive correlation between years, some publicprivate partnership for reinsurance may be necessary for...
Tipo: Presentation
Palavras-chave: Farm revenue insurance; Income stability; Public/private partnership; Risk and Uncertainty.
Ano: 1999
URL: http://purl.umn.edu/124090

IMPACT OF CLIMATE CHANGE AND INTERNATIONAL PRICES UNCERTAINTY ON THE SUDANESE SORGHUM MARKET: A STOCHASTIC APPROACH
Provedor de dados: 31
Autores: Sassi,   Maria.
The paper simulates the possible sorghum price change and the related probability of occurrence under different rainfall scenarios and in a context of price uncertainty on international markets. The empirical investigation is based on the stochastic approach. Results underline an expected increase in sorghum price under the effect of the high level of uncertainty in precipitation and in international market price; the most intense likely change produced by the international market price of sorghum uncertainty; the need to overcome the agricultural view in policy making in order to include a market perspective.
Tipo: Presentation
Palavras-chave: Climate change; Drought; Food prices; Stochastic approach; Sudan; Environmental Economics and Policy; Q18; Q54.
Ano: 2012
URL: http://purl.umn.edu/124111

Evaluating the Factors Influecing the Number of Visits to Farmers' Markets
Provedor de dados: 31
Autores: Abello,   Francisco J.; Palma,   Marco A.; Anderson,   David P.; Waller,   Mark W.
The primary objective of this paper was to determine key factors impacting the frequency of consumer visits to Texas farmers’ markets measured in number of visits per month. Data obtained from in-person surveys administered in two farmers’ markets locations were used to determine consumer, market factors, and socio-demographic characteristics of shoppers affecting frequency of visits. The results of the model showed that travel distance, number of adults in the household, market promotional characteristics such as entertainment and education activities, food events, as well as education and age were all determinants of frequency of visits to farmers’ markets.
Tipo: Presentation
Palavras-chave: Direct marketing; Frequency; Local; Farmers’ markets; Consumer/Household Economics; R11.
Ano: 2012
URL: http://purl.umn.edu/119786

The Value of Water Rights in Agricultural Properties in the Phoenix Active Management Area
Provedor de dados: 31
Autores: Yoo,   James; Perrings,   Charles; Kinzig,   Ann; Abbott,   Joshua K.; Simonit,   Silvio; Connors,   John P.; Maliszewski,   Paul J.
This paper estimates the value of water rights in the Phoenix Active Management Area (AMA), Arizona. Within AMAs groundwater rights cannot be transferred separately from the agricultural land to which they apply. As a result there is no separate market for ground water rights. The lack of a market creates two problems: there is no direct signal of the scarcity of water and no mechanism for reallocating water from low-to-high value uses. Water can only be reallocated by changing land use. With the growth of metropolitan Phoenix the value of water committed to residential, commercial or industrial use has increased rapidly relative to the value of water committed to agriculture. This has led to the reallocation of land from agriculture to urban uses. To...
Tipo: Presentation
Palavras-chave: Water rights; Hedonic price method; Urbanization; Farmland prices; Elasticity; Marginal willingness to pay; Environmental Economics and Policy; Land Economics/Use.
Ano: 2012
URL: http://purl.umn.edu/124095

Factors Influencing The Demand For Chickpea In India: Implications For Marketing And Promotion In The Indian Chickpea Market
Provedor de dados: 31
Autores: Agbola,   Frank W.; Bent,   Martin J.M.; Kelley,   Timothy G.; Rao,   P. Parthasarathy.
The Indian Sub-Continent (ISC) is the largest pulse producing and consuming region in the world. Australian scientists, producers, processors and exporters require detailed information about these markets. One study of these markets aims to describe the Indian chickpea market and to quantify the value of quality traits in the market using statistical analysis. This paper describes the Indian chickpea market and reports the results of about forty interviews with wholesalers, retailers, processors, brokers and commission agents which were conducted in eight key Indian markets in May and August 1999. A subsequent paper will present the results of an econometric analysis, which attaches values to the product traits of samples taken at the time of the...
Tipo: Presentation
Palavras-chave: India; Chickpea; Market segmentation; Market survey; Consumer/Household Economics; Demand and Price Analysis; Marketing.
Ano: 2000
URL: http://purl.umn.edu/123593

FOOD CHOICE &amp; SAFETY CERTIFICATION: A MIXED LOGIT INVESTIGATION OF THE SYSTEMATIC, DISTRIBUTIONAL &amp; DIFFERENTIAL INFLUENCES OF INFORMATION PROVISION
Provedor de dados: 31
Autores: Chalak,   Ali; Abiad,   Mohamad.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123984

Presentation to the Special Committee on Pricing of Domestic Wheat, Winnipeg May 7, 1986
Provedor de dados: 31
Autores: Loyns,   R.M.A.
Tipo: Presentation
Palavras-chave: Crop Production/Industries; Demand and Price Analysis.
Ano: 1986
URL: http://purl.umn.edu/124338

Promoting Healthful Foods: Could Water be the Answer?
Provedor de dados: 31
Autores: Cornwell,   T. Bettina; McAlister,   Anna R.
Food consumption choice rather than simply food consumption knowledge is now considered important in better understanding the unfolding obesity epidemic. In this paper, crossdisciplinary research examines food and drink combining. A survey-based pilot study examines the food and drink pairing preferences of young adults and shows strong preferences exist. A laboratory study with young children finds food consumption is not influenced by the child’s fussiness but is influenced by the drink accompaniment. Both palate preference and associative learning are explored as mechanisms driving the effects of drink context on food consumption.
Tipo: Presentation
Palavras-chave: Food Consumption/Nutrition/Food Safety.
Ano: 2012
URL: http://purl.umn.edu/123533