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| Registros recuperados: 46 | |
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| Moraes, Murilo Didonet de; Rambo, José Roberto; Sabbag, Omar Jorge. |
| O Programa de Aquisição de Alimentos (PAA) é uma política pública voltada à comercialização dos produtos agrícolas da agricultura familiar, implementada em 2003 no Brasil. Objetivou-se analisar a eficiência no uso dos recursos do PAA na modalidade Compra com Doação Simultânea (CDS-PAA) nos estados brasileiros participantes no ano de 2011, utilizando a metodologia DEA (Data Envelopment Analysis). Na análise, utilizou-se como inputs o número de agricultores familiares ocupados por estado no ano de 2006 e o número de agricultores familiares participantes do CDS-PAA por estado no ano de 2011, e como outputs utilizaram-se o número de pessoas beneficiadas pelo CDS-PAA por estado, a quantidade em quilogramas (kg) de produtos adquiridos pela modalidade e o valor... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultura familiar; DEA; Política pública.. |
| Ano: 2016 |
URL: http://periodicos.ufsm.br/extensaorural/article/view/21360 |
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| 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 |
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| Nambiro, Elizabeth; Chianu, Jonas; Murage, Alice W.. |
| Maize is the staple food for most Kenyan households, and grown in almost all the farming systems. Due to diminishing farm sizes in Kakamega District, crop productivity and the efficiency of farming systems are of great concern. This paper aims to provide empirical evidence on the links between efficiency in maize production and access to soil-related agricultural information services. Using cluster sampling, a total of 154 farmers in Kakamega District were interviewed. A 2–step estimation technique (Data Envelopment Analysis (DEA) and Tobit model) were used to evaluate the technical efficiencies among the farmers and the factors explaining the estimated efficiency scores. Data was disaggregated into farmers with and those without access to soil-related... |
| Tipo: Journal Article |
Palavras-chave: Maize; Soil information; Technical efficiency; Tobit analysis; DEA; Teaching/Communication/Extension/Profession. |
| Ano: 2010 |
URL: http://purl.umn.edu/95961 |
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| 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 |
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| Souza, Daniel Pacifico Homem de; Alves, Eliseu Roberto de Andrade. |
| Dois critérios foram utilizados para testar três métodos que estimam a eficiência técnica: o método Varian, a fronteira estocástica e a fronteira não-paramétrica, na literatura inglesa conhecida por “data envelopment analysis-DEA” e, em português, por encapsulamento de dados. A orientação pode ser para produto ou insumo, com vistas em mudar a combinação usada pelo produtor para outra, de acordo com algum critério de escolha. O trabalho se fixou em ambas as orientações. Dados de uma amostra de produtores de leite foram usados para avaliação dos métodos. O menor distúrbio na proposta de combinação de produtos ou insumos, em relação àquela usada pelos produtores, e o maior acréscimo da renda líquida constituem os critérios. Quando houver conflitos entre eles,... |
| Tipo: Journal Article |
Palavras-chave: Eficiência técnica; DEA; Fronteira estocástica; Método Varian; Critérios de avaliação.; Production Economics. |
| Ano: 2003 |
URL: http://purl.umn.edu/56826 |
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| Graham, Mary. |
| Technical efficiency has been widely studied in the literature, but in its pursuit, many of the inputs used can impact on the environment. Environmental effects can be modelled as undesirable output or, as has been the case in more recent studies, as conventional inputs. This paper examines the concept of environmental efficiency and how it can be used to evaluate the performance of Australian dairy farming, using nitrogen surplus, arising from excessive applications of fertilizer, as a detrimental input. Farming promotes the image of clean and green production and if this image is to be maintained, there is a need to ensure activities are environmentally friendly |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Efficiency; Detrimental inputs; Nitrogen surplus; DEA; Environmental Economics and Policy; Farm Management. |
| Ano: 2004 |
URL: http://purl.umn.edu/58450 |
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| Tang, Yao-yan; Cai, Dui. |
| On the basis of summarizing some literatures regarding research of agricultural production efficiency by using DEA at home, we conduct empirical analysis on agricultural production efficiency in 18 cities or counties of Hainan Province in the year 2002, 2005 and 2008 by using DEA model. The results show that in 2005 Hainan Province suffered from unusual drought and windstorm, which made the effective value of agricultural production in all cities or counties relatively low; the regions with DEA effectiveness of agricultural production in the year 2002, 2005 and 2008 were Qionghai City, Tunchang County, Lingao County, Danzhou City, Qiongzhong County and Baisha County. Haikou City, Wuzhishan City and Baoting County in the year 2002, Lingshui County in the... |
| Tipo: Journal Article |
Palavras-chave: DEA; Agricultural production efficiency; Hainan Province; China; Agribusiness. |
| Ano: 2011 |
URL: http://purl.umn.edu/113478 |
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| 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 |
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| Ortner, Karl M.. |
| Pure Technical Efficiency scores of Austrian dairy farms are estimated econometrically on the basis of data envelopment analysis and bootstrapping. In a second stage, using the same assumptions on the distribution of error terms, the distances of farms to their production possibility curve are estimated as functions of farm attributes. Since some of these attributes refer to natural conditions which are more or less unfavourable, the farms in the sample are facing individual frontiers. The distinction between sectorial and individual frontiers gives rise to a distinction between “overall” and “firm-level” efficiency. Using overall efficiency for the calculation of possible savings from a move to the frontier will overestimate these savings and... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: DEA; Efficiency; Dairy farms; Farm Management; Livestock Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/44371 |
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| Campos, Samuel Alex Coelho; Ferreira Neto, Jose Ambrosio. |
| This paper aimed to evaluate the technical efficiency of milk producers in the Projeto de Assentamento (PA) Feliz União, municipality of Lagoa Grande, MG. To this collected data to some of the milk production of 23 settlers in 2007 and later was used as analytical tools used Data Envelopment Analysis (DEA) to assess the technical efficiency of producers. The results show that the majority of producers (84%) are technically inefficient. Of inefficient farmers, 87% are operating under increasing returns to scale and 13% operating under diminishing returns to scale. Analyzing it is efficient and inefficient producers are mainly realizes that efficient producers are more intensive factor in the labor force and have herd dairy specialist for the activity.... |
| Tipo: Journal Article |
Palavras-chave: Rural settlement; DEA; Milk; Minas Gerais; Farm Management. |
| Ano: 2008 |
URL: http://purl.umn.edu/53855 |
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| Campos, Samuel Alex Coelho; Neto, Jose Ambrosio Ferreira; Amodeo, Nora Beatriz Presno. |
| Este trabalho objetivou avaliar a eficiência técnica entre os produtores de leite da no PA Fruta D’Anta, no município de João Pinheiro, MG, no ano de 2006. Utilizou-se como instrumental analítico a Análise Envoltória de Dados (DEA), contando com uma amostra de 22 produtores assentados. Os resultados obtidos evidenciam que uma proporção significativa dos produtores são ineficientes tecnicamente. Observou-se, também, que todos os produtores ineficientes estão trabalhando sob retornos crescentes à escala, o que permite afirmar que estes poderiam aumentar seu lucro mais que proporcional quando aumentada à produção.-----------------The main objective of this paper was to evaluate the technical efficiency in 22 milk producers in the PA FrutaD’Anta, in the... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Assentamentos rurais; DEA; Produção de leite; Minas Gerais; Rural settlement; Milk production; DEA. Minas Gerais; Livestock Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/107922 |
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| Mansson, Jonas. |
| Two types of guidelines can be obtained from a DEA (data envelopment analysis) analysis. Firstly, the firm can reduce input or increase production according to the DEA results. Secondly, an inefficient firm might be able to identify reference units. This makes it possible for the inefficient firm to, on site, study production that is more efficient, and thereby get information on e.g. efficient organisational solutions. In this study, we focus on how to detect these firm-relevant reference units. While applying the existing methods for identification of reference units, i.e. the intensity variable method and the dominance method, on a data set concerning booking centres in the Swedish taxi market, shortcomings in these methods were identified. This... |
| Tipo: Journal Article |
Palavras-chave: Reference units; Firm-relevant; DEA; Research Methods/ Statistical Methods; D24; L25. |
| Ano: 2003 |
URL: http://purl.umn.edu/44072 |
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| Registros recuperados: 46 | |
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