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排序方式: 共有871条查询结果,搜索用时 15 毫秒
81.
Immo Trinks Phillip Clegg Ken McCaffrey Richard Jones Richard Hobbs Bob Holdsworth Nick Holliman Jonny Imber Steve Waggott Robert Wilson 《International Review of Economics》2005,10(1):13-19
Laser scanning is a very efficient way to generate realistic, high-resolution digital models of 3-D geological outcrops. This paper discusses the methodologies involved in the creation and analysis of virtual outcrops, based on laser scanner data. The visualisation of the laser scanner data as a photorealistic 3-D object is described. Geological features picked out on the virtual outcrop (e.g. fractures, faults or bedding planes) can be extrapolated outward, into space, and inward, into the subsurface, using tension surfaces. 相似文献
82.
We investigate cooperation using an incremental investment game in which the first-mover has the ability to make small, but
increasing incremental investments in their counterpart. Our experiment is designed to test whether establishing trust in
small increments is more effective than alternatives, including a one-shot investment game, a decrease only condition where
the amount the first-mover sends to the second-mover must be less than the amount previously sent, and an unrestricted condition
where the first-mover is not restricted by the amount previously sent. Although results were mixed, broadly, iteration affords
greater cooperation than one-shot games and, when given the choice, participants seem to prefer to build trust gradually.
Implications for institutional design are discussed.
相似文献
83.
84.
Wilson H. S. Tong 《Journal of Business Finance & Accounting》2001,28(1-2):127-150
Existing literature on using the cointegration approach to examine the efficiency of the foreign exchange market gives mixed results. Arguments typically focus on econometric testing techniques, with fractional cointegration being the most current one. This paper tries to look at the issue from an economic perspective. It shows that the cointegrating relationship, whether cointegrated or fractionally cointegrated, is found mainly among the currencies of the European Monetary System which are set to fluctuate within a given range. Hence, there is no inconsistency with the notion of market efficiency. Yet, exploiting such a cointegrating relationship is helpful in currency forecasting. There is some evidence that restricting the forecasting model to consist of only cointegrated currencies improves forecasting efficiency. 相似文献
85.
User participation in information systems development is often surrounded by assumptions that the resultant system will be a success, will reflect user needs, and that the process results in an empowered workforce. This paper argues that underlying these foreground rational assumptions are instrumental, politically motivated justifications driving the need to involve users. 相似文献
86.
William E. Nganje Dean A. Bangsund F. Larry Leistritz William W. Wilson Napoleon M. Tiapo 《Review of Agricultural Economics》2004,26(3):332-347
Fusarium Head Blight is a fungus affecting wheat and barley in the upper Midwest region of the United States. The purpose of this study is to estimate the direct and secondary regional economic impacts of Fusarium Head Blight infestations from 1998 to 2000. Cumulative direct production and price impacts from Fusarium Head Blight in hard red spring, soft red winter, durum wheat, and barley are estimated at $871 million over the period, with secondary economic losses of $1.8 billion. The total impacts of $2.7 billion were concentrated in North Dakota and Minnesota, which accounted for 55% of total losses over the period. 相似文献
87.
This article empirically models a strategic game of technology adoption of shuttle train grain elevators with information on location of the firm and its competitors. A spatial econometric model illustrates the role of spatial interdependence of rivals' decisions as well as agronomic and competitive variables on discrete adoption decisions. The analysis assesses equilibria conditions that characterize technology adoption, in this case of shuttle train adoption, and the results provide an explanation of shuttle train adoption decisions in the grain handling industry in which spatial competition is critical. 相似文献
88.
89.
Ramsey pricing of priority service 总被引:1,自引:1,他引:0
Robert Wilson 《Journal of Regulatory Economics》1989,1(3):189-202
90.
Brenda Wilson 《中国企业家》2006,(18):94-96
构建领导能力补给线对所有企业而言都是一种竞争上的必要之举。如果得到成功执行,它将创造出竞争优势 相似文献