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| Registros recuperados: 19 | |
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| Adams, Richard M.; Menkhaus, Dale J.; Woolery, Bruce A.. |
| This study compares the structure of E, V frontiers under several specifications of expected income and variance parameters with emphasis on fundamental differences in efficient crop mixes. The results are generated using data from a specific production region and a selected set of cropping activities for Wyoming. The risk-efficient frontiers and underlying crop mixes display sensitivity to alternative parameter definitions and suggest that if researchers intend to use the E, V approach in providing decision information to producers, care should be exercised in the choice of income and risk measures. |
| Tipo: Journal Article |
Palavras-chave: Farm Management. |
| Ano: 1980 |
URL: http://purl.umn.edu/32530 |
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| Wu, JunJie; Adams, Richard M.; Plantinga, Andrew J.. |
| This paper analyzes the effect of open space and other amenities on housing prices and development density within the framework of an urban equilibrium model. The model is estimated as a system of equations that includes households' residential choice decisions and developers' development decisions and emphasizes the importance of amenities in the formation of development patterns and property values. The model is applied to Portland, Oregon, where ambitious open space programs have been implemented. The results suggest that amenities are important: households are willing to pay more for newer houses located in areas of less dense development, with more open space, better views, less traffic congestion, and near amenity locations. For the developer,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Community/Rural/Urban Development; R11; R21; R31. |
| Ano: 2003 |
URL: http://purl.umn.edu/21961 |
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| Fleming, Ronald A.; Adams, Richard M.; Ervin, David E.. |
| Testing soils for nutrients is expected to improve groundwater quality. However, it is unknown whether soil testing will improve groundwater quality sufficiently to decrease the demand for direct regulation of agricultural practices. Focusing on an irrigated agricultural region in eastern Oregon, the economic and environmental aspects of soil testing are assessed using a spatially distributed, dynamic simulation model which links economic behavior with the physical processes that determine groundwater quality. Results indicate that soil testing of all fields increases farm profits and reduced groundwater nitrate concentration. However, the benefits are small in terms of potential improvements in groundwater quality |
| Tipo: Journal Article |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 1998 |
URL: http://purl.umn.edu/31171 |
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| Dixon, Bruce L.; Garcia, Philip; Adams, Richard M.; Mjelde, James W.. |
| Duality methods utilizing a profit function framework are employed to estimate the output elasticity of ambient ozone levels on cash grain farms in Illinois. While duality methods have been recommended as a cure to many of the statistical problems of direct estimation of production functions, multicollinearity may still be a problem. A method for utilizing stochastic information on parameters of a seemingly unrelated system of equations, which is implied by profit function estimation, is developed and applied to measuring the impact of ozone. Such an approach may be necessary in measuring other environmental effects because of a lack of regressor variability. |
| Tipo: Journal Article |
Palavras-chave: Crop Production/Industries; Environmental Economics and Policy. |
| Ano: 1984 |
URL: http://purl.umn.edu/32140 |
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| Adams, Richard M.; Chen, Chi-Chung; McCarl, Bruce A.; Weiher, Rodney. |
| Climate is the primary determinant of agricultural productivity. In many parts of the world, including the United States, one can trace much of the year-to-year variations in climate to the El Nino-Southern Oscillation phenomenon. In 1997-98 the world experienced a severe El event and this is being flowed by a strong 1998-99 La Nina. The work underlying this develops estimates of the economic consequences of these events on U.S. agriculture. Both phases result in economic damages -- a $1.5 to $1.7 billion loss for the El Nino and a $2.2 to $6.5 billion for La Nina. The major conclusion is that ENSO events do impose costs on agriculture and consumers. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 1998 |
URL: http://purl.umn.edu/24013 |
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| Taylor, Michael L.; Adams, Richard M.; Miller, Stanley F.. |
| This article examines economic incentives and other mechanisms to offset non-point source pollution from agriculture. A biophysical simulator to estimate technical relationships is linked to linear programming models for representative farms in the Willamette Valley of Oregon. The models are then optimized for profit maximization under alternative non-point pollution control policies. The results indicate that site-specific resource conditions and production possibilities greatly influence policy effectiveness and the cost of achieving pollution abatement. Nevertheless, some abatement is possible on all farms for relatively little cost. |
| Tipo: Journal Article |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 1992 |
URL: http://purl.umn.edu/30744 |
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| Lin, Pei-Chien; Adams, Richard M.; Berrens, Robert P.. |
| Severe declines in Pacific Northwest salmon stocks, coupled with increasing recreational demands, and judicial decisions supporting Native American fishing rights create challenges for fishery agencies. This article explores the welfare effects on recreational anglers of alternative salmon allocation policies to meet Native American treaty rights. A discrete choice random utility model, coupled with a Poisson trip frequency model, is used to analyze these welfare effects. The model is fit to survey data from the Willamette River spring chinook fishery, an important recreational fishery in Oregon. Management options have dramatically different welfare effects. |
| Tipo: Journal Article |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 1996 |
URL: http://purl.umn.edu/31024 |
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| Rashford, Benjamin S.; Adams, Richard M.. |
| Wildlife management agencies increasingly use economic analyses to improve the efficiency of their management policies. Few economic studies consider supply-side analyses for wildlife management, due, in part, to a lack of biological response data that capture the full range of management strategies and the influence of landscape characteristics. This paper uses a simulation model to generate biological response functions, which are then embedded within an economic model to determine least cost management strategies. The procedure is applied to waterfowl management in the Prairie Pothole Region of the northern Great Plains. Results highlight management inefficiencies that result from oversimplified response functions that do not account for non-linear... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/19517 |
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| Menkhaus, Dale J.; Adams, Richard M.. |
| The purpose of this paper is to demonstrate a technique, discriminant analysis, which may be useful in predicting the direction of movement between fall feeder calf prices and spring yearling prices. The results of the discriminant analysis model are then compared with a conventional regression approach in terms of relative accuracy of predictions. The usefulness of incorporating the direction of price movement as a variable in a price prediction model is also evaluated. Generally, the results suggest that the discriminant analysis approach provides useful information, and the directional variable improves forecasts when incorporated into a traditional forecasting model. |
| Tipo: Journal Article |
Palavras-chave: Demand and Price Analysis. |
| Ano: 1981 |
URL: http://purl.umn.edu/32587 |
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| Watanabe, Michio; Adams, Richard M.; Wu, JunJie. |
| This research examines a spatially explicit allocation of habitat restoration activities in an Oregon watershed to meet water temperature targets for the benefit of endangered salmonid fish species. Integrating hydrological, biological and economic models, a series of optimization problems are investigated for different policy targets including temperature reductions and enhanced fish populations. Results indicated that the heterogeneous nature of riparian conditions and stream morphology needs to be considered if restoration activities are to be allocated efficiently in a watershed. We also found that it is less costly to implement restoration activities in tributaries if the objective is to maximize stream length where water temperatures decrease by a... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2003 |
URL: http://purl.umn.edu/21995 |
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| Adams, Richard M.; McCarl, Bruce A.; Dudek, Daniel J.; Glyer, J. David. |
| Global climate change from increases in atmospheric carbon dioxide and other trace gases is an issue of international concern. Adverse climate conditions are expected to reduce crop yields and alter the demand for and supply of water. These potential adjustments imply economic costs to agriculture and its constituents. This paper explores possible economic implications for U.S. agriculture, with particular reference to the West. Results from a series of spatial equilibrium model analyses suggest that climate change is not a food security issue for the United States. However, regional adjustments in agricultural production and associated resource use are expected. This implies additional pressure in rural communities. Environmental quality reductions are... |
| Tipo: Journal Article |
Palavras-chave: Environmental Economics and Policy. |
| Ano: 1988 |
URL: http://purl.umn.edu/32124 |
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| Wu, JunJie; Adams, Richard M.. |
| Because requisite micro data frequently are unavailable, it is common practice to use aggregate data to estimate economic relationships representing the behavior of individual agents. A substantial body of literature has examined conditions under which inferences between micro and aggregate specifications can be made. Less attention has been focused on the relative accuracy of predictions for each scale of model. In an empirical application, we compare the goodness-of-fit measures of eight sets of acreage response models, varying in aggregation from field- (micro-) level to regional- (macro-) level models. Results suggest aggregate models are superior to the micro model in predicting acreage response, even thought the micro models contain substantially... |
| Tipo: Journal Article |
Palavras-chave: Agribusiness. |
| Ano: 2002 |
URL: http://purl.umn.edu/31074 |
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| Santana, Carlos Augusto M.; Adams, Richard M.. |
| The decade of the 70s witnessed an expansion in U.S. cropped acreage in response to rising foreign demand. During this same period, substantial acreages of cropland were converted to non-agricultural uses. An issue arising from these land adjustments is whether available cropland will constrain agricultural production in the near future? This paper provides some insight by developing cropland requirements to meet 1985 demand for major U.S. commodities and then compares these projections with recent data in cropland availability. The results indicate that agricultural production should not be constrained by land availability at the national level, even in the event of high demand levels and slowed yield growth. When the analysis is extended to... |
| Tipo: Journal Article |
Palavras-chave: Land Economics/Use. |
| Ano: 1981 |
URL: http://purl.umn.edu/32075 |
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| Registros recuperados: 19 | |
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