Consulta: subjectFacets:"Trajectory"
Registros recuperados: 7
Data/hora: 06/06/2024 00:49:58

Dynamique des systemes d'elevage.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: CARON, P.; HUBERT, B.
L'élevage est une activité majeure dans le Nordeste semi-aride. C'est aussi un domaine d'intervention privilégié des institutions de recherche et de développement, qui souhaitent promouvoir Ia diffusion de modeles technologiques dits « modernes ». L'analyse et en évidence le décalage entre des propositions élaborées et expérimentées en station, selon des objectifs d'augmentation de la productivité et des criteres de validation biotechniques, et Ia réalité des dynamiques et des besoins des producteurs familiaux. Elle montre que les choix techniques des exploitants se réalisent en fonction de stratégies dont les tenants et les aboutissants échappent en partie au domaine de Ia technique au sens strict.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Tipificacao; Trajetoria; Nordeste; Regiao semi-arida; Familiar farms; Trajectory; Development; Northeast; Agricultura Familiar; Produção Animal; Sistema de Produção; Animal production; Classification; Farming systems; Brazil.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134409

Diversite et trajectoires d'evolution des exploitations.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: CARON, P.
Valorisation de la rnain-d'ceuvre familiale et autonomie de gestion des moyens de production sont les deux principales caractéristiques de l'agriculture familiale, qui font de I'exploitation agricole familiale un niveau d'organisation majeur. C'est à ce niveau que les producteurs définissent, pour eux et pour les leurs, des objectifs en fonction de Ia perception qu'ils ont de leur environnement et de leur situation dans cet environnement. C'est aussi à ce niveau qu'ils mobilisent, organisent et gerent les moyens de production, et qu'ils choisissent d'affecter les fruits de leur travail à l'investissement, à la consommation ou à I'épargne. Le petit producteur est depuis les années 80 l'objet de multiples attentions de Ia part des institutions publiques de...
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Diversidade; Trajetoria; Evolucao; Organizacao; Tipificacao; Brasil; Nordeste; Bahia; Massaroca; Pintadas; Familiar farms; Diversity; Trajectory; Development; Organization; Northeast; Agricultura Familiar; Classification; Evolution; Brazil.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134408

A analise dos intinerarios de desenvolvimento.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: EMBRAPA. Centro de Pesquisa Agropecuaria do Tropico Semi-Arido.
Trata-se de um estudo da evolucao dos processos de mudancas das comunidades rurais, tanto a nivel tecnico, produtivo, como economico e social. Os primeiros resultados ilustrados atraves de um estudo de caso apontam para a producao de informacoes operacionais e indicadores utilizaveis para o planejamento local e regional.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Trajetoria de desenvolvimento; Trajectory; URCA NE.; Análise; Comunidade Rural; Desenvolvimento Rural.; Rural communities; Rural development.
Ano: 1994
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131969

Interactions of surface and deep anticyclonic eddies in the Bay of Biscay
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Carton, Xavier; Le Cann, Bernard; Serpette, Alain; Dubert, Jesus.
In 1990, satellite observations revealed that an anticyclonic surface eddy (a SWODDY, for Slope Water Oceanic eDDY) followed a cycloidal trajectory north of the Iberian coast in the Bay of Biscay. To understand the mechanisms underlying such a trajectory, we study the evolution of an idealized surface eddy in a two-layer flat-bottom quasi-geostrophic model. The effect of several processes is studied, notably the presence of deep anticyclonic vorticity. This deep vorticity may result either from the tilting of the swoddy itself, or from the presence of an anticyclonic eddy of different origins, such as a meddy (Mediterranean Water EDDY). We also study the influence of a zonal coast south of the swoddy, via the "mirror effect". Firstly, a point-vortex model...
Tipo: Text
Palavras-chave: Bay of Biscay; Anticyclonic eddies; Swoddy; Meddy; Point vortex dynamics; Trajectory; Quasi-geostrophic model; In-situ observations.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00125/23589/21478.pdf

Trajectories of Changes in Phytoplankton Biomass, Phaeocystis globosa and Diatom (incl. Pseudo-nitzschia sp.) Abundances Related to Nutrient Pressures in the Eastern English Channel, Southern North Sea
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lefebvre, Alain; Dezécache, Camille.
The phytoplankton compartment is particularly reactive to changes in nutrient concentration and is used as a quality indicator. Using a simple numerical approach, the response of emblematic harmful taxa from the eastern English Channel and southern North Sea to changes in nutrient inputs was studied. The method is based on a diachronic approach using averaged maxima over sliding periods of six years (1994–2018). This gave a final dataset containing pairs of points (number of years) for explained and explanatory variables. The temporal trajectory of the relationship between each pair of variables was then highlighted. Changes were represented as long-term trajectories that allowed a comparison to a reference/average situation. In addition, the relevance of...
Tipo: Text
Palavras-chave: Harmful algal blooms; Eutrophication; Trajectory; Phaeocystis globosa; Pseudo-nitzchiacomplex; Oslo and Paris Convention OSPAR; Water Framework Directive (WFD); Marine Strategy Framework Directive (MSFD).
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00632/74400/74103.pdf

Variations in weed population densities, rate of change and community diversity in RR-soybeans and RR-maize strip crops under two herbicide strategies
Provedor de dados: Planta Daninha
Autores: Leguizamón,E.S.; Verdelli,D.M.; Acciaresi,H.
Concerns about the sustainability of large-scale, direct-drilled RR-soybeans (Glycine max), and RR-maize (Zea mays) under monoculture in central Argentina are growing steadily. An experiment was conducted during three consecutive years to determine the effects of crops and systems (monocultures and strips) and herbicide strategy on weed density, population rate of change (l), b community diversity (H´), crop yields and Land Equivalent Ratio (LER). Not only crops but also crop systems differentially influenced weed densities along their growth and development. For crop harvests, weed densities increased in both maize crop systems as compared to in the one for soybeans, but the lowest increase occurred in soybean strips. Differences were leveled by both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Strip-intercropping; Trajectory; Weed shifts; Herbicide environmental load; Environmental impact quotient.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000400022

PROGRAMA NACIONAL PARA PRODUÇÃO E USO DO BIODIESEL NO BRASIL (PNPB): TRAJETÓRIA, SITUAÇÃO ATUAL E DESAFIOS
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Mattei,   Lauro Francisco.
O artigo faz uma discussão sobre o Programa Nacional de Produção e Uso do Biodiesel (PNPB), que desde 2004 vem ganhando a atenção de vários segmentos sociais, públicos e privados, envolvidos com a busca de alternativas à matriz energética brasileira. Para tanto, o trabalho resgata todo o processo de construção dessa política específica, bem como discute a situação atual do programa, realçando os desafios atuais à luz das experiências internacionais.----------------------------------------------The paper discusses the National Program of Biofuel in Brazil. Since 2004  public  and private actors are giving attention to the program, specifically in the  actions that are developing to the governmental decisions about energy models  in Brazil. So, the study...
Tipo: Conference Paper or Presentation
Palavras-chave: Biodiesel; Trajetória; Desafios; Biofuel; Trajectory; Constrains; Resource /Energy Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/109212