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131.
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Stephen Castell 《Telecommunications Policy》1987,11(4)
Data broadcasting offers significant advantages over conventional computer and communications networks, as a nationwide, low cost, high speed system of data distribution. Focusing on the UK, this article highlights these advantages, with particular reference to the BBC's Datacast service. Future developments in data broadcasting, such as the introduction of satellite-compatible systems, are discussed. Finally, the article analyses policy considerations on a national and international scale. 相似文献
133.
The threat of future entry affects the exploitation of common property resources in important ways. An incumbent has a strategic incentive to manipulate the resource stock to deter entry or to harvest more stock prior to entry rather than share the resource with the entrant. It is possible that the threat of potential entry can lead to the extinction of the resource even though actual competition would result in a steady state with a positive stock level. 相似文献
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Stephen Marks 《Local Economy》1996,11(3):278-280
Tindale, S. (ed.) 1996: THE STATE AND THE NATIONS. THE POLITICS OF DEVOLUTION. London: IPPR, £11.95 paper. 相似文献
138.
HOUSEHOLD INCOME PLUS HOUSEHOLD PRODUCTION: THE DISTRIBUTION OF EXTENDED INCOME IN THE U.K. 总被引:1,自引:0,他引:1
This paper provides new estimates of the distribution of extended income amongst non-elderly, one-family households in the U.K. by combining household money income data and valuations of household production time. Extended income is substantially more equal than money income and extending the income definition changes income relativities significantly between families with and without earners and between married couple families and singles. 相似文献
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Individual investors are undiversified, holding on average less than four securities in their personal portfolios. The small firm literature focuses on CAPM (systematic risk, full diversification concept) premia, and the actual performance of small firm portfolios held by investors is overstated because of the presence of unsystematic risk. This paper illustrates the magnitudes of total risk for small and large firms, and the behavior of such measures as portfolio size is altered. Small firms contain more risk as shown by the finding that a diversified portfolio of small firms has greater variability than a single, typical large firm. While small firms outperform large firms, investors should be aware of the implications for small firm undiversified portfolios. Because small firms contain large amounts of unsystematic risk, diversification is important if investors are going to capture the small firm premia reported in the literature. 相似文献