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Stanley R. Thompson Wolfgang Gohout Roland Herrmann 《Journal of Agricultural Economics》2002,53(1):1-13
We use a nonlinear commodity market model to assess, theoretically and empirically, the impacts of recent reforms of the CAP on prices and economic welfare in the EU. The empirical analysis is based on an aggregate structural econometric model of the EU wheat economy and its links to the rest of the world. Instability issues are also investigated. Impacts of CAP reforms on the variance of domestic and world prices are analysed and a Monte Carlo simulation is used to evaluate uncertainty in the model's welfare computations. Recent reforms led to a net welfare gain within the EU during the period 1993–2000. Additional budgetary costs are less than the welfare gains of consumers and producers. Producers gained as lower price support was overcompensated by additional direct payments. 相似文献
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The last-mile problem presents a daunting challenge for many logistics service providers, especially some 7000 small, localized operations for whom the cost of complex software solutions is often prohibitive. As a result, last-mile dispatchers rely on simple heuristics to ensure adequate customer service at an acceptable cost. This research effort extends prior qualitative work by developing and testing a simple vehicle routing heuristic, based on behaviors observed in practice, that prioritizes customer service over cost against other simple vehicle routing heuristics across a variety of environments using simulation. The results support the inclusion of a customer service focus in vehicle routing and the addition of such heuristics to existing algorithm portfolios, specifically in urban areas with well-developed highway systems. 相似文献
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This paper surveys recent work in monetary theory, with primary emphasis on material that has appeared since the writing of Harry Johnson's 1962 survey. The discussion deals with the following topics: (1) the theory of money demand, with special attention to inventory approaches; (2) money, inflation and growth; (3) the welfare cost of inflation, the optimum quantity of money, and inflationary finance; (4) disequilibrium theory; (5) the general equilibrium approach to monetary theory; (6) the new microfoundations of money; and (7) rational expectations and the Phillips Curve. 相似文献
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Syau Yu-Ru Hsieh Hai-Teh Lee E. Stanley 《Review of Quantitative Finance and Accounting》2001,17(4):351-360
Most of the parameters used to describe the credit rating are in linguistic terms, which are vague and difficult to put into precise numerical values. Fuzzy set theory, which was developed to handle this kind of vagueness, is used to represent and to aggregate the various linguistic data usually used in commercial banks. To illustrate the approach, numerical examples are solved and compared with existing approaches. 相似文献
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