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| Registros recuperados: 12 | |
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| Nguyen, Khac Minh; Giang, Thanh Long. |
| This paper uses both parametric and non-parametric approaches to estimate technical, allocative, and economic efficiencies for the agriculture production in sixty provinces of Vietnam in the period 1990-2005. Under different technology specifications, both approaches show that the average technical, allocative, and economic efficiency estimates were not high, and there would be a large room for the studied provinces to improve their agricultural production efficiency. To examine consistency of the estimates from two approaches under different specifications of returns to scale, we use Spearman rank test, and the results indicate that parametric and non-parametric approaches provide different estimates. |
| Tipo: Journal Article |
Palavras-chave: Data envelopment analysis (DEA); Stochastic frontier production function (SFPF); Spearman rank; Production Economics; C14; N5. |
| Ano: 2009 |
URL: http://purl.umn.edu/58060 |
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| Bergeron, Nancy; Sedjo, Roger A.. |
| El Nino events are likely to affect maple syrup production since it is very sensitive to weather patterns. A statistically significant direct correlation has not been found in our preliminary analysis, however. This may be because many other factors affect production and because weather anomalies also occur in non-El Nino years. Few defensive activities are available to maple syrup producers to alleviate the negative impacts of weather anomalies on their production. Hence, the value of El Nino-Southern Oscillation (ENSO) forecasts to them is likely to be low, even if a clear correlation between productivity and ENSO events was eventually found. Overall, small welfare impacts of El Nino weather events are expected from their impact on the maple syrup... |
| Tipo: Working or Discussion Paper |
Palavras-chave: El Nino; Forests; Maple syrup; Economic welfare effects; Dieback; Resource /Energy Economics and Policy; D61; Q10; Q20; Q23; N5. |
| Ano: 1999 |
URL: http://purl.umn.edu/10671 |
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| Rahim, Afaf H.; van Ierland, Ekko C.; Wesseler, Justus. |
| The gum tree (Acacia senegal) in the Sahel-Sudan zone has many environmental benign functions. An important function is to control desertification. In this paper we analyze farmers' economic incentives to preserve the existing gum trees and their incentives to create new plantations using a real options approach. Results indicate that agricultural crops provide higher economic benefits as compared to gum agroforestry system. However, on the one hand, as gum arabic is produced during the dry period and land is abundant, there are low incentives for deforestation. Instead, farmers' tend to leave the land idle and let the tree growing. On the other hand, our results suggest that an increase in the prices of gum arabic of about 330 per cent is needed to induce... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Gum arabic; Deforestation; Entry and exit; Real options; Sudan; Crop Production/Industries; D4; N5; O13; Q12; Q23. |
| Ano: 2006 |
URL: http://purl.umn.edu/25720 |
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| Nelson, Robert H.. |
| The U.S. Forest Service was founded early in the twentieth century with the progressive mission to achieve the scientific management of the forests of the United States. Scientific management was in part a political theory, holding out a model by which social values and technical considerations should function separately in the political process. However, since the 1970s the autonomy of Forest Service professionals to manage the national forests has been undermined by judicial decisions, White House and other executive branch oversight, and routine Congressional interference. Ecological management is a new attempt in the 1990s to revive scientific management but it is not likely to be any more successful than previous efforts. Instead, a new governing... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Scientific management; Progressive era; Forests; Forest Service; Environmental Economics and Policy; H41; N5; Q23; Q28. |
| Ano: 1998 |
URL: http://purl.umn.edu/10447 |
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| D'Hotel, Elodie Maitre; le Cotty, Tristan. |
| The new institutional economics has recently developed the idea that the institutional environment can have an impact on economic actors' mental perceptions, and reciprocally, that these perceptions can impact on the institutional environment. This latter point seems particularly relevant in the field of economic organisations participation in the political making process. Nevertheless the empirical description of this role of mental perceptions in the political behaviour had not been made clearly. To contribute to this empirical description we lead a comparative study of 4 farm sectors in Costa Rica, based on a dynamic approach of mental perceptions in relation with the institutional change occurring during the liberalisation process. We carry out a... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Political Economy; D7; N5; Z0. |
| Ano: 2006 |
URL: http://purl.umn.edu/25792 |
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| Registros recuperados: 12 | |
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