Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados AgEcon (5) Autor Elloumi, Mohamed (5) Dhehibi, Boubaker (4) Lachaal, Lassaad (3) Messaoud, Emna B. (3) Allagui, Leila (1) Chouaibi, Walid (1) Selmi, Salah (1) Mais... Palavra-chave Productivity Analysis (4) Tunisia (4) Agricultural and Food Policy (2) Citrus farms (2) Community/Rural/Urban Development (2) Environmental Economics and Policy (2) Food Consumption/Nutrition/Food Safety (2) Food Security and Poverty (2) International Relations/Trade (2) Marketing (2) Research and Development/Tech Change/Emerging Technologies (2) Resource /Energy Economics and Policy (2) Stochastic frontier production function (2) Citrus (1) Citrus sector (1) Crop Production/Industries (1) Demand and Price Analysis (1) Efficiency (1) Institutional and Behavioral Economics (1) O30 (1) Mais... Tipo do documento Conference Paper or Presentation (4) Journal Article (1) Ano 2009 (1) 2008 (2) 2007 (2) País United States (5) Idioma Inglês (5)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 5 Primeira ... 1 ... Última Le marché de bestiaux du gouvernorat de Sidi Bouzid: un levier de développement rural du Centre tunisien AgEcon Selmi, Salah; Elloumi, Mohamed; Allagui, Leila; Chouaibi, Walid. L’élevage ovin est une activité traditionnelle dans toutes les régions de la Tunisie et surtout le Centre et le Sud. Sur le plan national et jusqu'à une date récente seule la viande bovine retenait l'attention des pouvoirs publics et les opérateurs privés. Face aux enjeux actuels de satisfaction des besoins du pays en viandes rouges et la mise à niveau de la filière des ovins, on assiste à un processus de développement du secteur qui connaît une restructuration du cheptel et une intensification de la production en intégrant les cultures fourragères ainsi qu’une mise à niveau des marchés de bestiaux. Dans le gouvernorat de Sidi Bouzid où l’élevage ovin occupe une place de choix dans l’économie régionale, les systèmes de production agricole connaîssent une... Tipo: Conference Paper or Presentation Palavras-chave: Agricultural and Food Policy; Community/Rural/Urban Development; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Institutional and Behavioral Economics; International Relations/Trade; Marketing; Production Economics; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy. Ano: 2008 URL: http://purl.umn.edu/52000 Measuring Irrigation Water Efficiency with a Stochastic Production Frontier: An Application for Citrus Producing Farms in Tunisia AgEcon Dhehibi, Boubaker; Lachaal, Lassaad; Elloumi, Mohamed; Messaoud, Emna B.. The objective of this paper is to propose an alternative measure of irrigation water efficiency based on the concept of input- specific technical efficiency, which contracts with measures previously used in the literature. The proposed methodology is applied to a randomly selected sample of 144 citrus growing farms located in Nabeul (Tunisia). A stochastic production frontier approach, based on Battese and Coelli’s (1995) inefficiency effect model, is used to obtain farm-specific estimates of technical and irrigation water efficiency. In addition, a second-stage regression approach is used to identify the factors influencing irrigation water efficiency differentials across citrus growing farms. Results indicate that technical efficiency ranges from a... Tipo: Conference Paper or Presentation Palavras-chave: Citrus; Efficiency; Tunisia; Water; Agricultural and Food Policy; Community/Rural/Urban Development; Demand and Price Analysis; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; International Relations/Trade; Marketing; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies. Ano: 2008 URL: http://purl.umn.edu/52166 Measurement and Sources of Technical Inefficiency in the Tunisian Citrus Growing Sector AgEcon Dhehibi, Boubaker; Lachaal, Lassaad; Elloumi, Mohamed; Messaoud, Emna B.. This paper investigates farm level technical inefficiency of production and its determinants in a sample of 150 citrus producing farms in Tunisia using a stochastic frontier production function approach applied to cross section data. Results indicate that technical efficiency of production in the sample of citrus producing farms investigated ranges from a minimum of 26.84% to a maximum of 97.98% with an average technical efficiency estimate of 86.23%. This suggests that citrus producers may increase their production by as much as 13.77% through more efficient use of production inputs. Further, the estimated coefficients in the technical inefficiency model indicate the positive effect on technical efficiency of the share of productive trees, the... Tipo: Conference Paper or Presentation Palavras-chave: Technical Efficiency; Stochastic frontier production function; Citrus farms; Tunisia; Productivity Analysis. Ano: 2007 URL: http://purl.umn.edu/9391 Stochastic Production Frontiers and Decomposition of Output Growth: The case of citrus-growing farms in Tunisia AgEcon Dhehibi, Boubaker; Elloumi, Mohamed. The aim of this paper is to investigate the relative contribution of technical efficiency, technological change and increased input use to the output growth of the Tunisian citrus growing farms using a stochastic frontier production function approach applied to panel data for the period 2003-2005. Knowledge of the relative contribution of factors productivity and input use to output growth and improvements in technical efficiency is crucial to provide a comprehensive view of the state of the citrus producing sector in the country and help farm managers and policy makers draw appropriate policy measures. The proposed methodology is based on the use of a flexible translog functional form. Results indicate that technical efficiency of production in citrus... Tipo: Conference Paper or Presentation Palavras-chave: Citrus sector; Tunisia; Productivity; Technical change; Technical efficiency.; Crop Production/Industries; Productivity Analysis; Q12; O30; O47.. Ano: 2009 URL: http://purl.umn.edu/49953 Measuring irrigation water use efficiency using stochastic production frontier: An application on citrus producing farms in Tunisia AgEcon Dhehibi, Boubaker; Lachaal, Lassaad; Elloumi, Mohamed; Messaoud, Emna B.. This paper proposes an alternative measure of irrigation water efficiency based on the concept of input-specific technical efficiency. It uses a stochastic production frontier approach, based on Battese and Coelli’s (1995) inefficiency effect model, to obtain farm-specific estimates of technical and irrigation water efficiency, and a second-stage regression approach to identify the factors that influence irrigation water efficiency differentials. This methodology was applied to a sample of 144 citrus farms in Nabeul, Tunisia. Technical efficiency varies widely, suggesting that these citrus farmers could increase their production by as much 33% by using inputs more efficiently. Mean irrigation water efficiency is similarly variable, and on average below... Tipo: Journal Article Palavras-chave: Water efficiency; Stochastic frontier production function; Citrus farms; Tunisia; Resource /Energy Economics and Policy. Ano: 2007 URL: http://purl.umn.edu/57013 Registros recuperados: 5 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco