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11.
This article examines zoning's impacts on population and employment density. It develops a model to explore the effects of zoning on the density of residential and nonresidential land use. Drawing on this model, density gradients that incorporate the effects of zoning are estimated for Greensboro, North Carolina. The model is used to simulate the effects of a change in restrictive-use residential zoning. The simulation shows that a 1 percent increase in the level of restrictive-use residential zoning across all neighborhoods in the city is associated with a 0.3 percent increase in gross population density and a 0.1 percent decline in net density (intensity). It suggests that restrictive-use zoning affects both the density and the intensity of residential land use through its effects on the value of residential land.  相似文献   
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Health care reform in the United States is on a collision course with economic reality. Most proposals focus on measures that will produce one-time cost savings by eliminating waste and inefficiency. But the right question to ask is how to achieve dramatic and sustained cost reductions over time. What will it take to foster entirely new approaches to disease prevention and treatment, whole new ways to deliver services, and more cost-effective facilities? The answer lies in the powerful lessons business has learned over the past two decades about the imperatives of competition. In industry after industry, the underlying dynamic is the same: competition compels companies to deliver constantly increasing value to customers. The fundamental driver of this continuous quality improvement and cost reduction is innovation. Without incentives to sustain innovation in health care, short-term cost savings will soon be overwhelmed by the desire to widen access, the growing health needs of an aging population, and the unwillingness of Americans to settle for anything less than the best treatments available. The misguided assumption underlying much of the debate about health care is that technology is the enemy. By assuming that technology drives up costs, reformers neglect the central importance of innovation or, worse yet, attempt to slow its pace. In fact, innovation, driven by rigorous competition, is the key to successful reform.  相似文献   
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George Hudson was the most important railway promoter of his time. He had a particular aptitude for visualizing and arranging spectacular company and line amalgamations and his activities helped to bring about the beginnings of a more modern railway network. In 1849 he exercised effective control over nearly 30 per cent of the rail track then operating in the UK, most of it owned by four railway groups, the Eastern Counties Railway, the Midland, the York, Newcastle and Berwick, and the York and North Midland, before a series of scandalous revelations forced him out of office. The economic, railway and accounting literatures have treated George Hudson as an important figure in railway history, although concentrating largely on the financial reporting malpractices of the Eastern Counties Railway, while Hudson was its chairman, which were incorporated into the influential Monteagle Committee Report of 1849. Relatively little attention has been paid, however, to events at Hudson's other major companies. This paper analyzes the available evidence, particularly that produced by the Committees of Investigation established at all four railway groups, in order to provide a more balanced assessment of George Hudson's approach to financial reporting and thereby place events at the Eastern Counties Railway in a broader context.  相似文献   
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The convergent product is an increasingly important phenomenon in the marketplace. The convergent product allows the developer to include more and more diverse functionalities into their products, which can satisfy a broad range of consumer needs. However, failures of convergent products arouse the need to understand its functionalities, and the optimal combination of functionalities and their relationships to attitude and purchase intention. In addition, because convergent product has the potential to offer more diverse functionality, we consider if this will have impacts on instrumental and emotional needs fulfillment and attitude and purchase intention. Additionally, consumer innovativeness was examined to ascertain if there were differences among consumers on their classification of the functionalities, or if it will moderate functional diversity, needs fulfillment, and product attitude. Using the Kano model, this study examined the nature of these relationships by examining the functionalities of a smartphone. Overall, our results show that the convergent products that include functionalities from two of the three categories of the Kano model, must‐have and attractive, were rated more positively. Consumer innovativeness differences were found. Consumers with high innovativeness considered must‐have and one‐dimensional functionalities the most important, and consumers with low innovativeness considered all three important, although one‐dimensional functionalities were considered significantly less important. Although increasing functional diversity positively raises product attitude and purchase intention, it tends to raise emotional needs fulfillment only once instrumental needs have been met, especially for respondents showing low innovativeness. The findings should arouse interest about factors that should not be overlooked when developing new convergent products.  相似文献   
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Sponsors of defined contribution retirement plans typically limit the investment choices of plan participants to a small number of investment managers and a limited number of investment vehicles. Such restrictions may limit excessive risk-taking by participants but also may preclude opportunities for efficient diversification. Many college and university 403 (b) plans have restricted investment choices to the retirement annuities offered by TIAA-CREF, the current manager of over half of all 403(b) contributions. Using 10 years of historical data, we study the efficiency of this TIAA-CREF opportunity set relative to a larger set that includes several standard index funds. Extrapolations must be interpreted -with caution. Assuming optimal rebalancing, depending on loss aversion and diversification constraints, the historical sample of returns implies that over a 20-year remaining work life, an employee -with an expanded menu that includes standard index funds could gain over 40% in terminal wealth compared to one who is restricted to TIAA-CREF retirement annuities. Even when a naive diversification strategy of equally weighting (1/n) all available funds is used, the expandedmenu outperforms the restricted portfolio by more than 25% over20years. These differences generally are significant at conventional levels based on parametric and nonparametric testing and do not appear to result from idiosyncratic market performance durinz the sample period.  相似文献   
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This study contributes to the literature on the nature and evolution of the multinational enterprise by exploring the geographic origins of the knowledge sources utilized by foreign subsidiaries during the process of technological innovation. Through a synthesis of the multinational literature and the broader literature on external sources of innovation, I develop and test a set of hypotheses that explain the conditions under which innovating subsidiaries are likely to draw upon sources of knowledge located in the home base of the firm and/or the subsidiary's host country environment. The hypotheses are tested through an analysis of the citations listed on over 10,000 patents issued to U.S. greenfield subsidiaries between 1980 and 1990. Copyright © 2001 John Wiley & Sons, Ltd.  相似文献   
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With the rapid increase in the accounting research arena over the past decade there has arisen the need for new tools to facilitate the research process. This paper presents citation indexing and analysis as two such tools. It presents some of the ways in which citation indexing and analysis have been used to perform scholarly research and it shows how citation indexing and analysis can be used for conducting historical research using a simplified accounting example.  相似文献   
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