摘要:

AbstractData are often used to test hypotheses, the outcome of which influences the final model, and the same data are used in estimating the parameters of the final model. This paper reviews the properties of such pretest estimators and surveys recent work on optimal pretest critical values. Implications are drawn for applied econometric research.

ISSN:0002-9092    

DOI:10.2307/1239645

出版商:Oxford University Press    

年代:1977

数据来源: WILEY

摘要:

AbstractSome of the impacts of energy cost increases and reduced supplies on the product mix of annual field crops and vegetables in California are analyzed. A quadratic programming model including risk is used to evaluate the effects of increased energy costs and reductions in fertilizer and in fuel supplies. The model includes a demand matrix of some nine field crops and twenty‐eight seasonal vegetables. The study also considers the relative impact of energy changes on producer and consumer welfare. Results suggest continued viability of vegetable production but differential consumer and producer impacts associated with energy changes.

ISSN:0002-9092    

DOI:10.2307/1239646

出版商:Oxford University Press    

年代:1977

数据来源: WILEY

摘要:

AbstractA multiperiod spatial equilibrium model of the national coal economy is developed to evaluate future interregional shifts in coal production and the investment requirements and sequencing for exploitation of a nonrenewable, variable quality resource. The effects of alternative sulfur dioxide emission standards and demand growth projections on the location and type of coal production, the transportation industry, and capital markets are examined. The study concludes that the coal industry can expand through 1990, especially in Appalachia and the West, to meet both greatly increased demand and restrictive air quality standards at moderately increased cost.

ISSN:0002-9092    

DOI:10.2307/1239647

出版商:Oxford University Press    

年代:1977

数据来源: WILEY

摘要:

AbstractA framework to analyze the delivery of emergency medical care in northern California is proposed. Using a branch and bound algorithm, the most efficient (least‐cost) size, number, and location of emergency medical facilities is found subject to a given level of demand and a measure of effectiveness (response time). The current spatial pattern of emergency medical service (EMS) facilities is compared with the most efficient spatial pattern. Due to the sparse distribution of the study area population, some individual EMS facilities are not economically viable given the current revenue structure. Funding alternatives for EMS, including volunteer service, are discussed.

ISSN:0002-9092    

DOI:10.2307/1239648

出版商:Oxford University Press    

年代:1977

数据来源: WILEY

摘要:

AbstractDuring the last twenty years there has been a proliferation of production cooperatives in the agricultural sector of low income countries. This paper examines the prospects for this type of firm in light of their poor historical record. A theoretical model is presented that shows the extraction of scarcity rents is a necessary condition for survival. Several case studies examined are found to be empirically consistent with the model. It is shown that policies can be devised for the extraction of rents.

ISSN:0002-9092    

DOI:10.2307/1239649

出版商:Oxford University Press    

年代:1977

数据来源: WILEY

摘要:

AbstractA theoretical model is developed to examine and illustrate some relationships between cost‐indexed support prices and land values. The model is developed in the context of a single‐commodity, price‐uncertain world in which policy makers are allowed to control the percentage of nonland operating costs and the percentage of land costs covered by the support price. The model demonstrates that the time path of land values can be quite sensitive to policy parameters. Attempts by policy makers to guarantee a “fair” rate of return on land may have substantial impact on future land values.

ISSN:0002-9092    

DOI:10.2307/1239650

出版商:Oxford University Press    

年代:1977

数据来源: WILEY

摘要:

AbstractA simulation model is used to measure the impact of four U.S. dairy import plans on Wisconsin farm milk prices and other variables. Estimates for different plans show that each additional billion pounds of milk equivalent in dairy imports would depress Wisconsin farm prices initially by $@@‐@@0.14 to $@@‐@@0.21 per hundredweight. Wisconsin farm milk prices initially would fall by 18% if the milk equivalent of butter and cheese imports rose to 12 billion pounds. Within three years, milk prices would recover. But this recovery would occur only after about 13% of Wisconsin's milk producers had exited from dairying.

ISSN:0002-9092    

DOI:10.2307/1239651

出版商:Oxford University Press    

年代:1977

数据来源: WILEY

摘要:

AbstractRecent events have sparked a debate over the effects of increased dairy imports on the U.S. dairy industry. This study attempts to estimate these impacts via an econometric model of the U.S. dairy sector. The time paths of adjustment of consumption, production, and price of specific dairy products and raw milk are estimated under three alternative levels of manufactured milk product imports. The analysis suggests that much larger than historically “normal” import levels are required to bring about a substantial impact upon the dairy industry in the longer run.

ISSN:0002-9092    

DOI:10.2307/1239652

出版商:Oxford University Press    

年代:1977

数据来源: WILEY

ISSN:0002-9092    

DOI:10.2307/1239653

出版商:Oxford University Press    

年代:1977

数据来源: WILEY

ISSN:0002-9092    

DOI:10.2307/1239654

出版商:Oxford University Press    

年代:1977

数据来源: WILEY