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811.
本文描述的是一种计算图象速度的新奇技术,用一个交又时延线对图象速度的两个相互垂直的分量分别进行计算。如果图象面积是已知的,计算图象速度时就不需要图象面积的其它知识,两个交叉时延线是需要的。该方法作为模拟超大规模集成电路的一种工具是非常适合的。 相似文献
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A model of municipal budget allocation is constructed. It is assumed that municipalities elect mayors whose preferences reflect those of their constituents and that the bureaucrats heading the public agencies are private-wealth maximizers. Following Niskanen it is argued that bureaucrats exploit their mayors in order to maximize their salaries which implies that the price-elasticity for municipal services will be unitary. A price index is constructed, and the implication is tested on a sample of 81 U.S. cities over the period 1951–1973. The time-series estimates of price, population, and income elasticities are compared with those of Bergstrom and Goodman and Borcherding and Deacon. 相似文献
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When an owner-manager of a business firm decides to sell the company, it is not a trivial decision. Whether it is a sale forced by circumstances outside company control, or a positive, strategic choice, it is certainly significant. Moreover, the method of “exit,” the advice taken, and the deal that is eventually struck will clearly affect the nature of the owner's eventual lifestyle. In such circumstances, there are four choices open to the owner: (1) Sale to a third party; (2) Sale to the management and/or employees; (3) Public quotation on the Stock Exchange; (4) Liquidation.This research first analyzes the magnitude of activity in the United Kingdom in each of the above categories during the five-year period 1983–1987. The results show very clearly that there is a strategic loosening taking place in the corporate marketplace—more firms are being sold, and more owner-managers are choosing to exit from ownership of their firms. Moreover, the most frequently used exit route by far is that of the private advertized sale.The second part of this paper analyzes in detail the data for the private advertized sale. By means of principal-component analysis and cluster analysis seven, ecological incubator environments were constructed at a county level. Significant differences were observed between the environments in respect to private advertized sales, private advertized sales rates, and industrial structure. These results show clearly that the nature of the supply of owner-managers wishing to realize their ownership is geographically biased and is, in part, a reflection of the existing industrial and commercial base. 相似文献