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| Registros recuperados: 19 | |
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| Ranjan, Ram. |
| This article looks at technology adoption in agriculture that is specifically targeted against invasive species. The analysis involves predicting the long-term distribution of technology choices when technology can be adopted and is adopted based on current and expected agricultural profits influenced by pest infestation. The theoretical analysis is based on an extension of two authors’ findings in 1993 and incorporates the possibility that psychological factors, such as complacency, have a significant impact on technology adoption and hence disease establishment. An empirical application is performed for soybean rust. |
| Tipo: Journal Article |
Palavras-chave: Adoption psychology; Invasive species; Popularity weighting; Soybean rust; Technology adoption; Q16. |
| Ano: 2007 |
URL: http://purl.umn.edu/37116 |
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| Ranjan, Ram. |
| This Paper designs a political economy model of invasive species management in order to explore the effectiveness of tariffs in mitigating the risk of invasion. The revenue interests of the government together with the interests of the lobby group competing with the imported agricultural commodity, that is believed to be the vector of invasive species, are incorporated in a Nash Bargaining game. The government, however, also considers the impact of tariffs on long run risks of invasion and decides optimal tariffs based upon its welfare in the pre and post-invasion scenarios. Along with the size of the lobby group, which is a function of the slope of the demand and supply curves, the weights assigned to the various components in the government welfare... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Invasive species; Political economy; Tariffs; Bargaining; Interest groups; Political Economy; Resource /Energy Economics and Policy; H23; Q17; Q58. |
| Ano: 2004 |
URL: http://purl.umn.edu/15642 |
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| Kiker, Greg; Ranjan, Ram. |
| The objective of this project is to design a decision support system for soybean rust management using gaming software that incorporates farmer's decision making in the face of risks from soybean rust. Learning from past actions and neighbor's actions are also incorporated. Farmers observe rust outbreak in the current and past periods and decide over how much of land to allocate between soybean, corn and other crops. This decision is influenced by maximization of expected profits criterion which entails crop rotation choices that are based upon perceived risks, yield drags and input costs from altering optimum rotation patterns. Adoption of new technology in terms of selecting better rust management practices is also analyzed in an adaptive... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2006 |
URL: http://purl.umn.edu/21248 |
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| Ranjan, Ram. |
| This paper explores the issue of technology adoption in agriculture that is specifically targeted against invasive species. The analysis involves predicting the long term distribution of technology choices when technology can be adopted and dis-adopted based upon current and expected agricultural profits which are influenced by the state of pest infestation. The impact of adaptive learning on adoption of technology is analyzed in the setting of complacency set in from a reduction in risks or compulsion to adopt technology from reduced profitability in event of non-adoption. Possibility of eradication of the disease based upon long term adoption of technology is also explored. The theoretical analysis confirms the intuition that psychological factors... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2006 |
URL: http://purl.umn.edu/21174 |
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| Ranjan, Ram. |
| This paper estimates the direct and indirect impacts of the Pink Hibiscus Mealybug infestation on the economies of Florida and the rest of the United States. The approach involves a Markov chain analysis wherein both short run and long run expected damages from infestation are calculated. Use is made of the CLIMEX model that predicts the potential pest-establishment regions in the US. While predictions based upon the CLIMEX model extend the scope of damages beyond Florida, the damages are dependent upon the rate of arrival and detection of species in those regions. Damages are significantly higher when a longer time horizon is considered. When nursery owners bear the full cost of quarantines in the form of loss of sales and treatment costs of infected... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Crop Production/Industries. |
| Ano: 2004 |
URL: http://purl.umn.edu/15655 |
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| Ranjan, Ram; Shortle, James S.; Marshall, Elizabeth P.. |
| A number of studies in the past have come up in order to explain and verify the observation made by Grossman and Kruger that that there may exist an inverted U-shaped relationship between environmental pollution and income. While some studies have found this relationship to hold true for certain pollutants, other studies have rejected this hypothesis based upon empirical observations of certain other pollutants. Further, most of these results have been derived from cross-sectional observation of such patterns across countries and therefore have given rise to further sckepticism. Though a number of empirical estimates of this relationship exist in the literature, there have been very few attempts to explain a theoretical basis for such a pattern.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 2003 |
URL: http://purl.umn.edu/22147 |
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| Registros recuperados: 19 | |
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