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| Registros recuperados: 2.166 | |
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| Leiter, Andrea M.; Pruckner, Gerald J.. |
| Sensitivity (proportionality) of willingness to pay to (small) risk changes is often used as a criterion to test for valid measures of economic preferences. In a contingent valuation (CV) study conducted in Austria in February 2005 1,005 respondents were asked their willingness to pay (WTP) for preventing an increase in risk by 1/42,500 and 3/42,500, respectively. WTP for the higher risk variation is significantly higher than WTP for the lower risk change. We find evidence that those respondents who have personal experience with avalanches combine the information about future risk increase, provided in the survey, with the observed number of mortal avalanche accidents in the past. The proportionality of WTP holds if such prior experiences are taken into... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2006 |
URL: http://purl.umn.edu/12225 |
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| Zhang, Xia; Zhao, Deyi; Li, Guoqiang. |
| Based on apprehending the conception of intensive use of woodland, 12 indices are selected from the aspects of economy, society, ecology and so on according to the principles of scientific systematization, collectible index and system inner linkage. A scientific evaluation index system for woodland intensive use is constructed. Range Standardization Method is adopted in order to eliminate the differences among indices; index weight is calculated by the objective variation coefficient weight method. Physio geographic condition, woodland area and forest resource of Wenhe Operating Zone in Yakeshi City, China are introduced. According to the 2004-2008 relevant statistical data, intensive use level of Wenhe Operating Zone is evaluated. Result shows that the... |
| Tipo: Thesis or Dissertation |
Palavras-chave: Woodland; Intensive use; Variation coefficient weight method; Wenhe Operating Zone of China; Land Economics/Use; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy. |
| Ano: 2009 |
URL: http://purl.umn.edu/54031 |
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| Cooper, Joseph C.; Langemeier, Michael R.; Schnitkey, Gary D.; Zulauf, Carl R.. |
| Yield variability can be significantly higher at the farm level than at more aggregated levels, including the county. However, due to a dearth of available farm level data, much stochastic analysis involving farm yields utilizes more aggregated yield data as a proxy for the farm level. We empirically evaluate farm-level variability using longitudinal farm level data sets available from the Kansas Farm Management Association and the Illinois Farm Business and Farm Management Association. For corn, soybeans, and wheat, we compare the farm level yield variability obtained from this data to that inferred from Federal crop insurance premiums. The farm management data exhibit lower yield variability than are implied by the crop insurance premiums. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Yield variability; Crop insurance; Corn; Wheat; Soybeans; Agricultural and Food Policy; Crop Production/Industries; Research Methods/ Statistical Methods; Risk and Uncertainty. |
| Ano: 2009 |
URL: http://purl.umn.edu/49216 |
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| Cornelissen, Thomas. |
| This article proposes a memory-saving decomposition of the design matrix to facilitate the estimation of a linear model with two high-dimensional fixed effects. A common way to fit such a model is to take into account one of the effects by including dummy variables and to sweep out the other effect by the within transformation (fixed-effects transformation). If the number of panel units is high, creating and storing the dummy variables can involve prohibitively large computer-memory requirements. The memory-saving procedure to set up the moment matrices for estimation presented in this article can reduce the memory requirements considerably. The companion Stata ado-file felsdvreg implements the estimation method, takes care of identification issues, and... |
| Tipo: Article |
Palavras-chave: Felsdvreg; Linked employer–employee data; Fixed effects; Three-way error-components model; Research Methods/ Statistical Methods. |
| Ano: 2008 |
URL: http://purl.umn.edu/122585 |
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| Xabadia, Angels; Goetz, Renan-Ulrich; Zilberman, David. |
| This paper presents a framework to determine optimal resource allocation over time for the production of a good by heterogeneous producers who generate a stock externality. We analyze the optimal intertemporal and quality-specific combination of abatement strategies at the source given by a change in the intensity of production and in the chosen technology, and/or removal of existing pollution stock. The results show how the specifications of the production and the emission functions affect technology adoption and the design of the optimal intertemporal combination of source and stock abatement strategies. Moreover, the paper shows that regulation at the intensive margin cannot be considered as a substitute for a regulation at the extensive margin. The... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2005 |
URL: http://purl.umn.edu/19538 |
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| Caracciolo, Francesco; Gorgitano, Maria Teresa; Lombardi, Pasquale; Sanino, Giuliana; Verneau, Fabio. |
| This paper shows the results of empirical research conducted to assess the sustainability of a typical food supply chain, suggesting feasible solutions to satisfy inter-dimensional requisites of durable development. The analysis was conducted with reference to the supply chain of the San Marzano tomato (SMZ), a typical local food. The product is endowed with an origin certification label (PDO), meeting demand within high-value market niches. The SMZ is a flagship product in the Italian region of Campania and has benefited from several regionally funded interventions, such as genetic research and support for the application for EU certification of origin). Two key findings emerged from the research. First, the results allowed us to define a Stakeholder... |
| Tipo: Article |
Palavras-chave: PDO product; Sustainability assessment; Food chain management.; Agribusiness; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Research Methods/ Statistical Methods; Q01; Q20; Q50. |
| Ano: 2011 |
URL: http://purl.umn.edu/121950 |
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| Registros recuperados: 2.166 | |
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