منابع مشابه
Switching Investments
2. Approach We first define a family of very simple basic investment strategies. We wish to guarantee that the performance of our strategy is close to that of any of the the basic strategies that we may consider, which can be achieved by hedging : distributing our starting capital over all basic strategies. Let δ = δ1, δ2, . . . be a sequence of positive reals, then the basic strategy σδ initia...
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Received: 11 November 2005 Revised: 1 February 2006 Accepted: 20 February 2006 Abstract Mobile user switching has become a critical issue facing mobile service providers. This study examines the switching behavior of mobile users who are not under any contractual obligations to stay with a provider. Drawing upon the literature on relationship marketing and switching costs, we examine if the rel...
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Firms in information technology (IT) intensive industries rely on IT investments to improve the quality of their products and services. Competing firms in these industries need to consider two opposing effects when they make IT investment decisions. The declining cost and improving performance of IT over time provides the later entrant a potential cost advantage. On the other hand, the first en...
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What is the impact on human capital investment when a worker’s ability and investments are observed by the labour market only when the worker invests in self-promoting activities? When ...rms pay spot market wages, high ability workers overinvest in selfpromotion. There is no employment contract that attains full e¢ciency. Constrained e¢ciency is attained when employment bonds are feasible. The...
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Traditional accounting techniques such as return on investment and net present value are often used when deciding investments in information technology. We examined both academic and trade literature to determine the utility of such techniques and to recognize alternatives. Findings reveal that this survey is needed and is important for information systems managers facing heightened scrutiny of...
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ژورنال
عنوان ژورنال: Theoretical Computer Science
سال: 2013
ISSN: 0304-3975
DOI: 10.1016/j.tcs.2012.10.012