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	Provedor de dados AgEcon (98) Autor Mazzanti, Massimiliano (9) Bojnec, Stefan (4) Brasili, Cristina (4) Fanfani, Roberto (4) Ferto, Imre (4) Zoboli, Roberto (4) Boozer, Michael A. (3) Nicolli, Francesco (3) Atasoy, Sibel (2) Bakucs, Lajos Zoltan (2) Cainelli, Giulio (2) Hall, Alastair R. (2) Jayne, Thomas S. (2) Latruffe, Laure (2) Maldonado, Jorge Higinio (2) Mills, Bradford F. (2) Montini, Anna (2) Moreno-Sanchez, Rocio del Pilar (2) Ooms, Daan L. (2) Parikh, Ashok (2) Mais... Palavra-chave C23 (98) Environmental Economics and Policy (20) Q12 (18) Agricultural and Food Policy (14) International Relations/Trade (10) Q18 (10) Research Methods/ Statistical Methods (10) International Development (9) Panel data (9) Q56 (9) C51 (8) F14 (8) Food Consumption/Nutrition/Food Safety (8) Labor and Human Capital (8) Q17 (8) Agribusiness (7) D24 (7) Food Security and Poverty (7) C24 (6) Community/Rural/Urban Development (6) Mais... Tipo do documento Conference Paper or Presentation (50) Working or Discussion Paper (32) Journal Article (11) Presentation (4) Report (1) Ano 2012 (3) 2011 (13) 2010 (15) 2009 (15) 2008 (6) 2007 (8) 2006 (13) 2005 (11) 2004 (5) 2003 (4) 2002 (2) 2001 (3) Mais... País United States (98) Idioma Inglês (96) Espanhol (1) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 98 Primeira ... 1 2 3 4 5 ... Última Waste Generation and Landfill Diversion Dynamics: Decentralised Management and Spatial Effects AgEcon Mazzanti, Massimiliano; Montini, Anna; Nicolli, Francesco. This paper provides analyses of municipal waste generation and landfill diversion dynamics based on an 8-year panel dataset for Italy covering 103 provinces. Although absolute declining for waste generation is a long way off, there are some first signals of increasing relative delinking and robust average landfill diversion. Spatial effects seem to be negligible, probably due to the strong decentralisation of waste management and policies: local, economic, policy and structural factors contribute to explaining the waste dynamics. Though North-South waste performances are showing some signals of convergence, greater efforts towards convergence of waste performances in a decentralised policy scenario are needed. Tipo: Working or Discussion Paper Palavras-chave: Waste Generation; Waste Management; Landfill Diversion; Decentralised Waste Policies; Landfill Tax; Separated Collection; Spatial Effects; Convergence; Environmental Economics and Policy; C23; Q38; Q56. Ano: 2010 URL: http://purl.umn.edu/60660 Paths to Success: The Relationship Between Human Development and Economic Growth AgEcon Boozer, Michael A.; Ranis, Gustav; Stewart, Frances; Suri, Tavneet. This paper explores the two-way relationships between Economic Growth (EG) and Human Development (HD), building on an earlier work by Ranis, Stewart, and Ramirez (2000). Here, we show that HD is not only a product of EG but also an important input to it. The paper develops new empirical strategies to estimate the strength of the two-way chains connecting HD and EG. Building on existing growth literature, we explore the empirical determinants of positive growth trajectories running from HD to EG and find that HD plays an essential role in explaining growth trajectories. Our findings point to the empirical relevance of endogenous growth models in general, and threshold effect models in particular. We also develop a measure of the strength of the EG to HD... Tipo: Working or Discussion Paper Palavras-chave: Human development; Economic growth; Threshold models; Labor and Human Capital; O15; O57; C23. Ano: 2003 URL: http://purl.umn.edu/28379 Input Substitution in the Spanish Food Industry AgEcon Alarcón, Silverio. Firm panel data sets over the period 1993 to 2002 are used to estimate translog production functions with labour, capital and material inputs for 9 Spanish food industries. To tackle the endogeneity of the regressors, the generalized method of moments estimations is employed. The specification tests reject the instrument variables only for 1 out of 9 estimates. The remaining 8 industries show evidence of homogeneity and constant returns to scale. Only one industry exhibits complete separability of all pairs of factors and thus translog is preferred to Cobb-Douglas specification for 7 industries. Substitutability and complementarity between production factors in response to price changes are studied through Morishima and Shadow elasticities.... Tipo: Conference Paper or Presentation Palavras-chave: Translog; Elasticity of substitution; Generalized method of moments; Returns to scale; Agribusiness; C23; D24; L66. Ano: 2005 URL: http://purl.umn.edu/24487 Estimating Farm Efficiency in the Presence of Double Heteroscedasticity Using Panel Data AgEcon Hadri, Kaddour; Guermat, Cherif; Whittaker, Julie. The accuracy of technical efficiency measures is important given the interest in such measures in policy discussions. In recent years the use of stochastic frontiers has become popular for estimating technical inefficiency, but estimated inefficiencies are sensitive to specification errors. One source of such errors is heteroscedasticity. This paper addresses this issue by extending the Hadri (1999) correction for heteroscedasticity to stochastic production frontiers and to panel data. It is argued that heteroscedasticity within an estimation can have a significant effect on results, and that correcting for heteroscedasticity yields more accurate measures of technical inefficiency. Using panel data on cereal farms, it is found that the usual technical... Tipo: Journal Article Palavras-chave: Stochastic frontier production; Heteroscedasticity; Technical efficiency; Panel data; Farm Management; Research Methods/ Statistical Methods; C23; C24; D24; Q12. Ano: 2003 URL: http://purl.umn.edu/43994 Exchange Rates Impacts on Agricultural Inputs Prices using VAR AgEcon Yeboah, Osei-Agyeman; Shaik, Saleem; Allen, Albert J.. The effects of the U.S. dollar exchange rate versus the Mexican peso are evaluated for four traded nonfarm-produced inputs (fertilizer, chemicals, farm machinery, and feed) in the U.S. Unit root tests suggest that the exchange rate and the four input price ratios support the presence of unit roots with a trend model but the presence unit roots can be rejected in the first difference model. This result is consistent with a fixed price/flex price conceptual framework, with industrial prices more likely to be unresponsive to the exchange rate than farm commodity prices. Tipo: Journal Article Palavras-chave: Exchange rate; Pass-through; Law of one price; SUR; VAR; Agribusiness; Financial Economics; International Relations/Trade; F14; F31; F36; F42; C23. Ano: 2009 URL: http://purl.umn.edu/53096 Institutions, Policy Reforms and Efficiency in New Member States from Central and Eastern Europe AgEcon Bojnec, Stefan; Ferto, Imre; Jambor, Attila; Toth, Jozsef. This paper investigates determinants of agricultural sector efficiency in ten new member states (NMS-10) of the European Union (EU) from Central and Eastern European countries by the non-parametric method Data Envelopment Analysis (DEA) and the panel data analysis. The agricultural sector efficiency varies between the NMS-10. We have found positive and significant association of the agricultural sector efficiency with the natural agricultural factor endowments, average farm size, farm specialization, small-scale farms, and the EU integration process. The foreign direct investments have an ambiguous affect, while the nominal assistance rate is not found significant. Reform and institutional developments and liberalization are associated with the... Tipo: Conference Paper or Presentation Palavras-chave: Agricultural efficiency; Institutions; Policy reforms; Agricultural and Food Policy; Institutional and Behavioral Economics; Political Economy; C14; C23; Q12. Ano: 2010 URL: http://purl.umn.edu/91032 A metafrontier approach to measuring technical efficiencies across the UK dairy sector AgEcon Barnes, Andrew Peter; Revoredo-Giha, Cesar; Sauer, Johannes. A regional approach is applied to measure technical efficiencies on dairy farms which employs the deterministic metafrontier approach. We construct six super regions for the UK, i.e. Eastern, Western, Northern England, Wales, Scotland and Northern Ireland. Data are collected through three different administrative systems, all be it under the same FADN guidance. We find for dairy farming comparative indicators of performance in all three data sets. The stochastic frontier approach is applied to construct 6 regional frontiers and a pooled (UK) dataset for comparison. A likelihood ratio test rejects the null hypothesis that these regions operate under a common frontier which may indicate bias in previous attempts to measure dairying efficiency at the country... Tipo: Conference Paper or Presentation Palavras-chave: Stochastic Production Frontiers; Metafrontiers; UK Farm Account Data; Dairy farming.; Agricultural and Food Policy; Q12; D24; C23; C51. Ano: 2011 URL: http://purl.umn.edu/99369 Efficiency in Damage Control Inputs: A Stochastic Production Frontier Approach AgEcon Karagiannis, Giannis; Tsionas, Efthimios; Tzouvelekas, Vangelis. The present paper extents the existing literature providing a theoretically consistent framework for measuring input-specific technical efficiency in damage control inputs within a stochastic production frontier model. The theoretical framework for modeling damage control agents is based on Fox and Weersink (1995) model specification that allows for increasing returns on damage control inputs. The empirical model accounts veterinary expenses as the damage control input and it is applied on a panel data set of sheep farms in Greece during the 1989-92 period. The results suggest that sheep farms in Greece are using inefficiently immunization and antibiotics in their flock as their average technical efficiency level was 72.82%. On the other hand, technical... Tipo: Conference Paper or Presentation Palavras-chave: Increasing returns; Input-specific technical efficiency; Damage and control function; Sheep farms; Greece; Farm Management; Q12; Q16; C23; C51. Ano: 2005 URL: http://purl.umn.edu/24642 Estimation and Inference for Threshold Effects in Panel Data Stochastic Frontier Models AgEcon Yelou, Clement; Larue, Bruno; Tran, Kien C.. One of the most enduring problems in cross-section or panel data models is heterogeneity among individual observations. Different approaches have been proposed to deal with this issue, but threshold regression models offer intuitively appealing econometric methods to account for heterogeneity. We propose three different estimators that can accommodate multiple thresholds. The first two, allowing respectively for fixed and random effects, assume that the firms’ specific inefficiency scores are time-invariant while the third one allows for time-varying inefficiency scores. We rely on a likelihood ratio test with m − 1 regimes under the null against m regimes. Testing for threshold effects is problematic because of the presence of a nuisance parameter which... Tipo: Conference Paper or Presentation Palavras-chave: Stochastic frontier models; Threshold regression; Technical efficiency; Bootstrap; Dairy production; C12; C13; C23; C52; Research Methods/ Statistical Methods. Ano: 2007 URL: http://purl.umn.edu/9769 The Present Value Model, Farmland Prices and Structural Breaks AgEcon Gutierrez, Luciano; Erickson, Kenneth W.; Westerlund, Joakim. We review the constant discount rate present value model of farmland prices using non-stationary panel data analysis. We use panel unit root and cointegration analysis to test if the present value model holds for a sample of 31 U.S. States covering the period 1960-2000. Preliminary results indicate that farmland prices and cash rents are non-stationary and non-cointegrated assuming a constant discount rate. The absence of cointegration may be due to the presence of a regime shift representing a time-varying discount rate. To accommodate this possibility, we introduce new panel cointegration tests that allow for unknown regime shifts in the cointegration relationship. The results suggest that the cointegration hypothesis cannot be rejected if there is a... Tipo: Conference Paper or Presentation Palavras-chave: Farmland prices; Present value model; Non-stationary panel data analysis; Regime shift; Q24; Land Economics/Use; C22; C23; G12. Ano: 2005 URL: http://purl.umn.edu/24702 THE DEMAND FOR FOOD QUALITY IN RUSSIA AND ITS LINKAGE TO OBESITY AgEcon Staudigel, Matthias. This study analyses whether Russian households differ in their choice of food quality when they differ in their number of overweight and obese members. Using survey data from the Russia Longitudinal Monitoring Survey (RLMS) for the years 1995-2005, households are classified into three weight groups. Quality elasticities of expenditures are estimated by a fixed-effects panel model regressing unit values of several food groups on expenditures and a set of household characteristics. Coefficients for each weight group are received by including interaction terms of expenditures and weight group dummies. A set of Wald tests is applied to test for slope heterogeneity across weight groups. Descriptive statistics reveal that obese households actually purchase... Tipo: Conference Paper or Presentation Palavras-chave: Unit values; Quality choice; Quality elasticity; Obesity; Russia; RLMS; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Health Economics and Policy; C23; D12; I10; I18; Q18. Ano: 2010 URL: http://purl.umn.edu/116444 Patterns and Determinants of Agro-Food Trade of the BRIC Countries: The Role of Institution AgEcon Bojnec, Stefan; Ferto, Imre; Fogarasi, Jozsef. Agro-food trade between the BRIC countries has increased. Brazil and China contributed to the rapid increase of agro-food trade. The Russian Federation experienced the stagnating and the most volatile agro-food trade over time. The composition of agro-food trade for the BRIC countries varies by the BEC agro-food trade categories and over time. The prevailing in the composition of agro-food trade are BEC122 and BEC111 for Brazil and the Russian Federation, and BEC122 and BEC112 for India and China. Brazil and India have strengthened their market shares in agro-food trade between the BRIC countries, while the Russian Federation has experienced the most severe deterioration. The number and the share of trading partners that have traded every year vary between... Tipo: Conference Paper or Presentation Palavras-chave: Agro-food trade; BRIC countries; Adapted gravity model; Institutions; Agribusiness; F14; Q17; C23; O57. Ano: 2011 URL: http://purl.umn.edu/115529 Creating the Conditions for International Business Expansion: The Impact of Regulation on Economic Growth in Developing Countries - A Cross-Country Analysis AgEcon Jililian, Hossein; Kirkpatrick, Colin; Parker, David. The role of an effective regulatory regime in promoting economic growth and development and therefore international business has generated considerable interest among researchers and practitioners in recent years. In particular, building effective regulatory structures in developing countries is not simply an issue of the technical design of the most appropriate regulatory instruments, it is also concerned with the quality of supporting regulatory institutions and capacity. Many of the institutions that support markets are publicly provided and the effectiveness of these regulatory institutions can be expected to be an important determinant of how well markets function. This paper explores the role of regulation in affecting economic outcomes using an... Tipo: Working or Discussion Paper Palavras-chave: Economic growth; Regulation; Governance; Institutions; Economic performance; International Development; C23; I18; L33; L51; L98; O38; O50. Ano: 2003 URL: http://purl.umn.edu/30554 O impacto do trabalho infantil no setor agrícola sobre a saúde AgEcon Nicolella, Alexandre Chibebe; Kassouf, Ana Lucia; Barros, Alexandre Lahóz Mendonça de. The aim of this dissertation is to identify the causal relation between rural child labour and health. The analysis utilized the PNAD, a Brazilian household survey, from 1998 and 2003. The econometric modeling was based on the pseudo-panel approach and was considered the children from 5 to 15 years old in 1998 and from 10 to 20 years old in 2003. The results show that work and work in risky jobs in the agricultural sector do not differ from those impacts of other sectors. It was also presented, for all individuals that work in the agricultural sector does not impact the health capital and work in the non rural sector impact negatively the health capital. So, the government intervention in rural areas should be different from the one implemented on the... Tipo: Journal Article Palavras-chave: Child labor; Health; Pseudo-panel; Agribusiness; I12; R21; C23. Ano: 2008 URL: http://purl.umn.edu/61231 Heterogeneous Responses to Water Conservation Programs: The Case of Residential Users in Los Angeles AgEcon Hanemann, W. Michael; Nauges, Celine. We propose a detailed analysis of heterogeneity in households’ responses to water conservation programs (price increase, voluntary and mandatory conservation) during periods of water shortage. Using a unique dataset covering water consumption of all residential users in Los Angeles (California) during the drought (1988-1992), we show that households generally were responsive to the conservation measures but that the magnitude of households’ responses varies depending on the instrument and on households’ characteristics, in particular the size of their lot. Price elasticity is estimated between –0.29 and –0.47 in the high season (June-October), and between 0 and –0.19 in the low season (November-May). Results suggest that the voluntary conservation program... Tipo: Working or Discussion Paper Palavras-chave: Water conservation; Residential use; Heterogeneity in behavior; Panel data; Resource /Energy Economics and Policy; C23; D12; Q25. Ano: 2006 URL: http://purl.umn.edu/7158 Agricultural Trade Flows among Developing Countries: Do Regional Preferential Trade Agreements make a Difference? AgEcon Tembo, Gelson; Jayne, Thomas S.. Regional integration through trade is recognized as one way to foster economic growth and poverty reduction. This paper uses the gravity model and 11-year panel data (1996-2006) on Southern African Development Community (SADC) member countries to study Zambia’s regional agricultural trade flows and the impact of the SADC Trade Protocol (SADC-TP). Zambia’s volume of trade is significantly related to most of the standard gravity variables. The results indicate that Zambia has been largely trading below potential, especially with respect to exports. There have been improvements in Zambia’s trade flows during the SADC-TP period but only with a few countries. Further improvements will require re-examining protocol implementation and individual countries’... Tipo: Conference Paper or Presentation Palavras-chave: Southern Africa; Regional trade; Gravity analysis; Zambia; Agricultural and Food Policy; Food Security and Poverty; International Relations/Trade; Marketing; Research Methods/ Statistical Methods; C23; C51; F12; F14; F15. Ano: 2009 URL: http://purl.umn.edu/51733 Technical, Allocative, and Economic Efficiency in Swedish Dairy Farms: The Data Envelopment Analysis Versus the Stochastic Frontier Approach AgEcon Johansson, Helena. Technical, allocative, and economic input efficiency scores were estimated for an unbalanced panel of Swedish dairy farms, using data envelopment analysis (DEA) and the stochastic frontier approach (SFA). By comparing the results it was concluded that when the entire dairy farm is studied the DEA is more appropriate to use since it does not require any particular parametric form to be chosen. The average DEA technical, allocative and economic efficiency indices were eventually found to be 0.77, 0.57, and 0.43 respectively. The influence of size on the efficiency scores was analyzed and significant evidence indicating a positive relationship between size and efficiency was found. Finally it was concluded that the main challenge facing the Swedish dairy... Tipo: Conference Paper or Presentation Palavras-chave: Technical efficiency; Allocative efficiency; Economic efficiency; Data envelopment analysis; Stochastic frontier approach; Livestock Production/Industries; C14; C23; C24. Ano: 2005 URL: http://purl.umn.edu/24478 Impact of Government-Sponsored Pollution Prevention Practices on Environmental Compliance and Enforcement: Evidence from a Sample of US Manufacturing Facilities AgEcon Sam, Abdoul G.. A two-way fixed effects Poisson model is used to investigate the impact of 43 EPA-sponsored pollution prevention (P2) practices on compliance and enforcement for a sample of facilities in the US manufacturing sector. I find that P2 adoption reduces environmental violations in three industries while increasing violations in two others. P2 adoption also spurs fewer enforcement actions in three industries. I further partition the P2 practices into three categories based on their approach to improve environmental performance. In doing so, I find that practices that involve changes in operating procedures--about a third of adopted P2 practices--such as instituting a self-inspection and monitoring program to discover spills or leak sources, improving maintenance... Tipo: Conference Paper or Presentation Palavras-chave: Pollution Prevention Act; P2 practices; Compliance; Enforcement; Poisson models; Environmental Economics and Policy; Resource /Energy Economics and Policy; Q53; L51; C23. Ano: 2009 URL: http://purl.umn.edu/49306 The impact of non-farm income on the investment in agriculture: evidence from Hungary and Slovenia AgEcon Bakucs, Lajos Zoltan; Bojnec, Stefan; Ferto, Imre; Latruffe, Laure. The article investigates the impact of non-farm income on the investment for Hungarian and Slovenian farms using FADN panel data for the years 2004-2008 and different econometric estimation approaches. We find that non-farm income is more important for Slovenian farms than for Hungarian farms. Farm gross investment is positively associated with real sales growth and cash flow implying the absence of soft budget constraint. Gross farm investment is negatively associated with non-farm income, but positively associated with investment subsidies. Specific results by country are found depending on growing vs. declining real sales and on farm indebtedness. Tipo: Conference Paper or Presentation Palavras-chave: Non-farm income; Farm investment; Soft budget constraint; Panel data analysis; Community/Rural/Urban Development; D81; D92; O12; Q12; C23. Ano: 2010 URL: http://purl.umn.edu/95318 The evolution of land values in Italy. Does the influence of agricultural prices really matter? AgEcon 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 Registros recuperados: 98 Primeira ... 1 2 3 4 5 ... Última

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