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Showing items 1 through 9 of 62.
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Documents et rapports de conférence
République arabe syrienne, Asie occidentale
The world is witnessing a period in its history when the increasing socio-political upheavals are taking the lives of thousands, and destroying the natural wealth of our planet. Poverty and food insecurity are two key forces driving this destruction. These ongoing problems compound those already being posed by an increasing shortage of water, scarcity of productive land, an expanding population, and the threat of global warming.
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Documents et rapports de conférence
The paper proposes the use of meta models to determine the optimal intertemporal management of soil and phosphorus losses from agricultural land. This approach allows finding a equilibrium of the economic and biophysical system simultaneously. In contrast to the existing literature the model takes account of nonlinear relationships and of a large number of agricultural activities. The mathematical problems arising from this complex setup are addressed and the model is solved numerically.
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Documents et rapports de conférence
The purpose of this paper has been to present quality-adjusted values for land in the United States and nine European countries using price and quantity data for 1990. Disregarding such differences in the quality-adjusted land input would generate biased estimates of the land input and thus of total factor productivity. Land quality adjustments could potentially be enhanced further with additional data on soil characteristics, climate, and other productivity-related characteristics.
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Documents et rapports de conférence
In this paper we develop a dynamic data-consistent way for estimating agricultural land use choices at a disaggregate level (district-level), using more aggregate data (regional-level). The disaggregation procedure requires two steps. The first step consists in specifying and estimating a dynamic model of land use at the regional level. In the second step, we disaggregate outcomes of the aggregate model using maximum entropy (ME). The ME disaggregation procedure is applied to a sample of California data.
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Documents et rapports de conférence
Sri Lanka, Asia du sud-est
The Case Study Workshop was organized with the objective of obtaining the necessary input the experts on different subject areas of water resources, subject those views and discussion among the stakeholder agencies, and synthesize the information to a report on the case study. The outcome of the Workshop would eventually transform into the contribution of Sri Lanka to the forst WWDR.
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Documents et rapports de conférence
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Documents et rapports de conférence
Éthiopie, Afrique, Afrique orientale
This paper presents a method for stratifying villages into Development domains using multivariate analysis of a broad community-based survey. The results from the analysis are used to draw conclusions in terms of policy implications. Topics of discussion include Development domains and policy implications. The paper ends with comment by Samuel Benin.
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Documents et rapports de conférence
Inde, Asie méridionale, Asie
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Documents et rapports de conférence
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Documents et rapports de conférence
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