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This paper examines whether the ‘cross ownership’ of wireline and wireless communications carriers is socially beneficial or harmful, and therefore should be allowed or regulated. We analyze a generic model of cross ownership of the firms which produce different but inter-related services. We show that, first, if both of the wireline and wireless industries are monopolistic, cross ownership results in social gains when the two services are complements, and social losses when they are substitutes. Secondly, if the wireless industry is sufficiently competitive, there’s little or no welfare loss from cross ownership. Finally, we briefly address the effect of network externality on the welfare consequences of cross ownership.  相似文献
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In this paper, the diffusion of wireless communications in Finland is studied. The objectives are to find factors which have affected the diffusion process and to forecast the diffusion of wireless communications in Finland. The diffusion process is based on the epidemic diffusion theory. The data consists of annual wireless subscribers of networks based on Nordic Mobile Telephone (NMT) and Global System for Mobile Communications (GSM) standards in 1981-1998. The data is fitted into the logistic model by means of nonlinear least squares after writing two parameters of the logistic model as functions of certain variables. The results show that the economic situation has affected the relative growth rate, and that the wireless network coverage has affected the number of potential adopters. By extrapolating the logistic model, a forecast with a confidence interval of wireless communications subscriber rates in Finland is made. The forecast shows that the final penetration rate will be some 91.7% in 2009. The model predicts the actual figures of year 1999 very accurately. Finally, the time derivatives of the diffusion process are analyzed; they clarify the effect of economic situation on the diffusion.  相似文献
3.
以当今移动商务的应用和移动商务技术的发展现状为出发点,结合作者所从事的高等院校电子商务类实验教学工作,论述了将移动商务应用模式引入到商科实验课程的构想。分析了引入移动商务模拟实验的必要性和可行性,并构建了移动商务实验课程的基本架构和内容,对可能遇到的问题进行分析并提出解决办法。  相似文献
4.
Since the Korean government implemented the “Number Portability System” in the domestic mobile communications market, mobile communication companies have been striving to hold onto existing customers and at the same time to attract new customers. This paper presents a competing risk model that considers the characteristics of a customer in order to predict the customer's mean residual life under the “Number Portability System.” Competing causes for churning considered are pricing policy, quality of communication, and usefulness of service. It has been observed that the customers who pay more are less sensitive to pricing policy; younger people are less sensitive than older people to the change of the quality of communication; and women are more sensitive than men in terms of usefulness of service. We expect that the result of this study can be used as a guideline for effective management of mobile phone customers under the number portability system.  相似文献
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