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51.
A primary goal of the 1996 Telecommunications Act isto encourage competition in long-distance telephonemarkets. Four years after passage of thislegislation, Bell Operating Companies (``BOCs') havebeen granted permission to offer long-distanceservices in only one state. The regulatory barrier toentry is justified on grounds that the BOCs have theability to discriminate against incumbentlong-distance carriers in the provision of essentialaccess services. We take this premise as given andquantify the critical level of discrimination requiredto offset the positive consumers' surplus gainsassociated with the enhanced competition resultingfrom BOC entry into long-distance markets.  相似文献   
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Pregnancy affects virtually every organ system, and "baseline" normal laboratory test levels change throughout gestation.  相似文献   
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Insurance companies often test applicants for the presence of cocaine. Because a positive test may automatically preclude further consideration, such cases often never reach the medical director. The negative impact of cocaine use on insurability is reviewed.  相似文献   
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The purpose of this brief paper is to illustrate a problem with certain “types” of behavioral experiments predicated on a test of predictive ability. Such studies possess the following common characteristics: (1) They employ the implicit prediction models of individual human subjects; (2) They utilize as criteria for assessing predictive usefulness events whose outcomes cannot be independent of expectations about them (e.g. bankruptcy); (3) They use historical values for both criterion events and treatment factors. The difficulty with such experimental designs lies in the necessity to assume unalterable prior behavior in order to utilize a known value for the criterion event. Such an assumption makes it difficult to demonstrate the predictive usefulness of any information treatment factors.  相似文献   
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The factors determining foreign bank efficiency are investigated using a three stage research method. It is found that host market incumbency reduces efficiency of foreign banks in Australia, resulting in over use of inputs. Factors underlying the limited global advantage hypothesis of Berger et al. [Berger, Allen N., DeYoung, Robert, Genay, Hesna, Udell, Gregory F., 2000. Globalisation of financial institutions: Evidence from cross-border banking performance. Brookings-Wharton Papers on Financial Service 3, 23–120] are identified, in that nationality specific factors represented by dummy variables are not significant once other relevant effects are controlled for. Parent profitability is not found to result in increased host nation efficiency, while parent credit rating effects are mixed. Some evidence is presented that banks from more financially sophisticated nations are more efficient. The implications of these results are explored from the perspectives of bank management and bank regulators.  相似文献   
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Recent changes in land use for tourism and recreation have been driven by socio-demographic shifts, increases in disposable time and incomes, technological changes, transport developments, and emerging systems of policy and governance. Combined with changes in consumption preferences, these have led to general but differentiated increases in tourism and recreation. Outbound tourism has grown more rapidly than inbound, which has led to some displacement of land use demands. In the case of recreation, there are shifts between at home and outdoor recreation, and changes in the content and location of each. The resulting land use trends can be understood in regional, intra-regional (urban versus rural versus coastal) and temporal terms. Future trends are considered in terms of how this broad set of drivers and the relationships between them are being and are likely to be transformed.  相似文献   
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