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De Pinto, Alessandro; Nelson, Gerald C.. |
We propose an information-theoretic approach to assess the performance of a discrete choice model used to analyze land use and land use change. We show that our disaggregated measure can be used to compare robustness of predictions across land use categories and across models. Furthermore, a proper reformulation of the problem shows that a disaggregated (observation by observation) log-likelihood lends itself to an information theoretic interpretation, which allows comparisons performance across models. |
Tipo: Conference Paper or Presentation |
Palavras-chave: Land Economics/Use. |
Ano: 2006 |
URL: http://purl.umn.edu/21307 |
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De Pinto, Alessandro; Nelson, Gerald C.. |
Land use change in developing countries is of great interest to policymakers and researchers from many backgrounds. Concerns about consequences of deforestation for global climate change and biodiversity have received the most publicity, but loss of wetlands, declining land productivity, and watershed management are also problems facing developing countries. In developing countries, analysis is especially constrained by lack of data. This paper reviews modeling approaches for data-constrained environments that involve methods such as neural nets and dynamic programming and research results that link individual household survey data with satellite images using geographic positioning systems. |
Tipo: Conference Paper or Presentation |
Palavras-chave: Land Economics/Use; Q15; Q23; R14. |
Ano: 2006 |
URL: http://purl.umn.edu/25723 |
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Nelson, Gerald C.; Rosegrant, Mark W.; Koo, Jawoo; Robertson, Richard D.; Sulser, Timothy B.; Zhu, Tingju; Ringler, Claudia; Msangi, Siwa; Palazzo, Amanada; Batka, Miroslav; Magalhaes, Marilia Castelo; Valmonte-Santos, Rowena A.; Ewing, Mandy; Lee, David R.. |
Tipo: Report |
Palavras-chave: Environmental Economics and Policy; Farm Management. |
Ano: 2009 |
URL: http://purl.umn.edu/57371 |
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You, Liangzhi; Ringler, Claudia; Nelson, Gerald C.; Wood-Sichra, Ulrike; Robertson, Richard D.; Wood, Stanley; Guo, Zhe; Zhu, Tingju; Sun, Yan. |
Although irrigation in Africa has the potential to boost agricultural productivities by at least 50 percent, food production on the continent is almost entirely rainfed. The area equipped for irrigation, currently slightly more than 13 million hectares, makes up just 6 percent of the total cultivated area. Eighty-five percent of Africa’s poor live in rural areas and mostly depend on agriculture for their livelihoods. As a result, agricultural development is key to ending poverty on the continent. Many development organizations have recently proposed to significantly increase investments in irrigation in the region. However, the potential for irrigation investments in Africa is highly dependent upon geographic, hydrologic, agronomic, and economic factors... |
Tipo: Working or Discussion Paper |
Palavras-chave: Irrigation potential; Internal rate of return; Large-scale irrigation; Small-scale irrigation; Investment; Africa; International Development; Resource /Energy Economics and Policy. |
Ano: 2010 |
URL: http://purl.umn.edu/93736 |
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Nelson, Gerald C.; Lee, Yong-Kee. |
South Korea uses a quota and a tariff on beef imports to keep farm prices high. Part of the quota rents are used to support indirect benefits to producers. The welfare costs of these policies are analyzed. Following a suggestion of Hayami, a deficiency payment financed by tariff revenues from increased imports is considered as an alternative to the quota. As Anderson (1983) found for Japan, a deficiency payment is Pareto-superior only if indirect benefits from the quota revenue are ignored. |
Tipo: Journal Article |
Palavras-chave: International Relations/Trade. |
Ano: 1991 |
URL: http://purl.umn.edu/32622 |
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