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| Sarnat, Carol L.; Willis, Cleve E.; Harper, Carolyn R.. |
| In increasing numbers, communities that rely on groundwater for drinking supplies have discovered contamination from agricultural pesticides and herbicides, road salt, underground fuel storage, and septic systems. A variety of short- and long-run remedies are available with highly uncertain outcomes. An appropriate technique for solving a benefit-cost problem of this type is a sequential decision framework using stochastic dynamic programming procedures for solution. The approach is illustrated here by means of an application to the problem of the recent contamination of the groundwater of Whately, Massachusetts by the agricultural fumigant EDB and the pesticide aldicarb. |
| Tipo: Journal Article |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 1987 |
URL: http://purl.umn.edu/28981 |
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| Willis, Cleve E.; Willis, Lisa M.; Shea, Jill. |
| Opaluch and Just reported the top 20 departments in pages per faculty of articles in the American Journal of Agricultural Economics for the five year period 1968-1972. To determine how much has changed and how much has not during the intervening two decades, the analysis was repeated for the five year period 1988-1992. Some things seem not to change. University of California, Berkeley, remains at the pinnacle twenty years later. And 13 of the top 20 departments two decades ago, remain there during the 1988-1992 period. But seven did change, and the most notable aspect is that the number of Northeast departments in the top 20 rose from two to five. |
| Tipo: Journal Article |
Palavras-chave: Teaching/Communication/Extension/Profession. |
| Ano: 1993 |
URL: http://purl.umn.edu/31556 |
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| Stevens, Thomas H.; Barrett, Christopher B.; Willis, Cleve E.. |
| Three conjoint models-a traditional ratings model, a ratings difference specification, and a binary response model-were used to value groundwater protection program alternatives. The last, which is virtually identical to a dichotomous choice contingent valuation specification, produced the smallest value estimates. This suggests that the conjoint model is very sensitive to model specifications and that traditional conjoint models may overestimate economic value because many respondents are not in the market for the commodity being valued. |
| Tipo: Journal Article |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 1997 |
URL: http://purl.umn.edu/31562 |
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| McDonald, Jeffrey D.; Moffitt, L. Joe; Willis, Cleve E.. |
| This article adds to the information base concerning the applicability of mean- Gini stochastic efficiency analysis in agriculture. The mean-Gini efficient set of decisions is characterized rigorously in terms of its corresponding absolute risk aversion. In an empirical analysis, the mean-Gini efficient set of decisions is derived for four studies from the literature and compared to the second degree stochastic dominance efficient set. An alternative quantitative measure of risk aversion is used to gain insight in a visceral sense to the risk preferences associated with mean-Gini efficient decisions. |
| Tipo: Journal Article |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 1997 |
URL: http://purl.umn.edu/118007 |
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| Taupier, Richard; Willis, Cleve E.. |
| Geographic Information Systems (GIS) are becoming increasingly important to virtually all of the natural and social sciences. Applied economists will find that GIS can make valuable contributions to many of the problems with which they are concerned. Moreover, a great deal of the science behind GIS technology would benefit from the contributions of applied economists. This paper presents some initial suggestions for the ways in which GIS may be important to economics and the GIS related issues concerning which applied economists could provide useful insights. |
| Tipo: Journal Article |
Palavras-chave: Research and Development/Tech Change/Emerging Technologies. |
| Ano: 1994 |
URL: http://purl.umn.edu/31448 |
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