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Registros recuperados: 41 | |
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Balcombe, Kelvin George; Davidova, Sophia; Latruffe, Laure. |
This paper employs bootstrapping to correct for bias and to construct confidence intervals for Malmquist TFP indices derived with DEA. It uses these results to investigate the productivity change in Polish agriculture during a crucial period of the country's transition to a market economy, 1996-2000, when Poland was preparing for accession to the European Union. The bias corrected estimates show regress in productivity at an annual rate of 4 percent. The confidence intervals suggest that between two-thirds and four-fifths of the sample farms (250) in different years might have experienced no change in productivity. The cluster analysis based on confidence bounds reveals three paths of productivity change. Farms which recorded an increase in productivity at... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Malmquist indices; Bootstrapping; Poland; Farms; Productivity change; Productivity Analysis; D24; Q12; C6. |
Ano: 2005 |
URL: http://purl.umn.edu/24572 |
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Lu, Wencong C.; Xi, Aiqin; Ye, Jian. |
This paper analyzed Chinese small-scale farmer's response to agricultural risks by using MOTAD model. Based on the household's data from the two villages Wangjia and Damao in Zhejiang province, we established "representative rural household" for each of the sampling villages. The results show that farmers in Zhejiang are quite sensitive to agricultural risks. However, different farming systems, the ratio of agricultural income to total family income, as well as the size of arable land, differentiates their risk response. The decision maker's risk preference not only affects the type of agricultural activities and corresponding scales they selected, but also have further effects on the micro agricultural production structure and stable growth of household's... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Farming household; Agricultural risks; Risk response; MOTAD Model; Farm Management; Risk and Uncertainty; D1; C6; D2. |
Ano: 2006 |
URL: http://purl.umn.edu/25656 |
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Vosough Ahmadi, Bouda; Dwyer, Cathy M.; Erhard, H.W.; Morgan-Davies, Claire; Waterhouse, A.; Milne, Catherine E.; Kupiec-Teahan, Beata; Ringrose, Sian; Goddard, Pete; Phillips, Kate; Stott, Alistair W.. |
This study quantified interactions between animal welfare and farm profitability in British extensive sheep farming systems. Qualitative welfare assessment methodology was used to assess welfare from the animal's perspective in 20 commercial extensive sheep farms and to estimate labour demand for welfare, based on the assessed welfare scores using data collected from farm inventories. The estimated labour demand was then used as a coefficient in a linear program based model to establish the gross margin maximising farm management strategy for given farm situations, subject to constraints that reflected current resource limitations including labour supply. Regression analysis showed a significant relationship between the qualitative welfare assessment... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Sheep; Labour; Animal Welfare; Linear Programme; Livestock Production/Industries; C6; Q10; Q19; Q57. |
Ano: 2010 |
URL: http://purl.umn.edu/91803 |
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Siddig, Khalid H.A.; Flaig, Dorothee; Luckmann, Jonas; Grethe, Harald. |
This document describes the Israeli Social Accounting Matrix (SAM) for the year 2004, developed by the Agricultural and Food Policy Group at the University of Hohenheim. The SAM is a part of a larger research project which aims to analyse several economic, trade, and labour policies in the context of economic integration of agriculture between Israel and the West Bank. Data are obtained from various sources in Israel. Sources include the Israeli Central Bureau of Statistics (ICBS), the Central Bank of Israel (CBI), and the Israeli Tax Authority (ITA). Data from sources outside of Israel are used to fill-in some gaps in the domestic reports. External sources include the World Trade Organization (WTO), the Organisation for Economic Co-operation and... |
Tipo: Working or Discussion Paper |
Palavras-chave: SAM; IO Table; CGE; Database; Israel.; Agricultural and Food Policy; Consumer/Household Economics; Labor and Human Capital; C6; C8; D1; D3; D5; D6; E2; E6; F1; F2; H2. |
Ano: 2011 |
URL: http://purl.umn.edu/110156 |
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Nolte, Stephan; Rau, Marie-Luise. |
Throughout recent year food quality standards have become a ubiquitous phenomenon that nationally and globally influences agri-food markets. With equilibrium models commonly used in the quantitative analysis of market and trade effects, we review possible approaches to modeling standards existent in the literature, elaborate the reasoning behind them and discuss their suitability to reflect "real world" situations. While the modeling approaches identified may respectively depict a specific situation, they may not be appropriate in others. That is they capture certain effects of standards only. With increasing ability to account for the various effects of standards, the modeling approaches become more complex and the data requirements increase. |
Tipo: Conference Paper or Presentation |
Palavras-chave: Food quality; Standards; Modeling approaches; Equilibrium models; Food Consumption/Nutrition/Food Safety; F1; C6; Q18. |
Ano: 2006 |
URL: http://purl.umn.edu/25653 |
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Wang, Xuecai; Dorfman, Jeffrey H.; McKissick, John C.; Turner, Steven C.. |
In many parts of the U.S., beef cattle production is a large sector of the agricultural economy, yet few of the cattle are stockered; instead the production is focused on cow-calf operations only. Restricting their operation to only the first phase of beef production may be limiting the cattle owners' profit potential. This paper examines the opportunities for operators to earn additional profit from stockering cattle. Using a representative risk-averse producer, a decision set with seven possible marketing strategies is elevated for the optimal decision in a Bayesian framework which allows for price and production risk. We find that in many instances retaining the cattle for stockering is a superior decision when done in conjunction with specific... |
Tipo: Journal Article |
Palavras-chave: Cattle; Decision science; Estimation risk; Marketing; Livestock Production/Industries; C6; D2; Q1. |
Ano: 2001 |
URL: http://purl.umn.edu/15442 |
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Athanassoglou, Stergios; Sheriff, Glenn; Siegfried, Tobias; Tim Huh, Woonghee. |
Standard economic models of groundwater management impose restrictive assumptions regarding perfect transmissivity (i.e., the aquifer behaves as a bathtub), no external effects of groundwater stocks, observability of individual extraction rates, and/or homogenous agents. In this article, we derive regulatory mechanisms for inducing the socially optimal extraction path in Markov perfect equilibrium for aquifers in which these assumptions do not hold. In spite of the complexity of the underlying system, we identify an interesting case in which a simple linear mechanism achieves the social optimum. To illustrate potential problems that can arise by erroneously imposing simplifying assumptions, we conduct a simulation based on data from the Indian state of... |
Tipo: Working or Discussion Paper |
Palavras-chave: Common Property Resource; Differential Games; Groundwater Extraction; Imperfect Monitoring; Markov Perfect Equilibrium; Environmental Economics and Policy; C6; D0. |
Ano: 2011 |
URL: http://purl.umn.edu/102502 |
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Schreinemachers, Pepijn; Berger, Thomas; Sirijinda, Aer; Praneetvatakul, Suwanna. |
This paper studies the diffusion of greenhouse agriculture in a watershed in the northern uplands of Thailand by applying econometrics and agent-based modeling in combination. Adoption has been rapid by farmers in the central valley of the watershed, while farmers at higher altitudes, lacking transferable land titles that could serve as mortgage collateral, have been unable to obtain loans for greenhouse investment. The objectives of the paper are both methodological and empirical. On the methodological side, it shows that econometrically estimated models of farm household behavior are useful to design and to parameterize an agent-based model. On the empirical side, simulation results show that if mortgage collateral would not be required, then adoption in... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Innovation diffusion; Technology adoption; Multi-agent systems; MP-MAS; Agricultural and Food Policy; Consumer/Household Economics; Environmental Economics and Policy; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Q12; Q16; C6. |
Ano: 2009 |
URL: http://purl.umn.edu/50899 |
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Liu, Zhuo; Messer, Kent D.; Korch, Mary A.; Bounds, Thomas. |
This study presents a thorough discussion of the efficiency and effectiveness improvement from optimization models (Binary Linear Programming and Goal Programming), as applied to the Department of Defense’s Readiness and Environmental Protection Initiative. The OM models can yield 21% and 19.1% higher benefit scores respectively, spending $13,013,473 and $31,463,473 less total acquisition costs. To achieve the same level of conservation benefits for the current rank based approach, the REPI would spend additional $20.1 million and approximate 50% of the budget. A counterpart of OM- the cost-effective analysis is observed to be inefficient when the problem becomes complex. In a real world of political environment of the conservation programs, we suggest a... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy; C6; Q24. |
Ano: 2011 |
URL: http://purl.umn.edu/103997 |
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Registros recuperados: 41 | |
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