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Concern is often expressed about systems of agriculture and questions are raised as to whether alternative systems might be an improvement. The Food Group of the Technology Policy Unit at the University of Aston, Birmingham, has been investigating the potential for a move to a vegetarian food production scheme for England and Wales. 相似文献
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Bond researchers have recently observed that issues with split ratings have yields more closely resembling the yields on bonds with the lower of the two ratings. This evidence could lead researchers to question why an issuer ever obtains more than one rating in an environment where two ratings, when split, can never reduce yields, whereas two ratings, when split, can increase yields. This paper explores the rating function in a certification framework and concludes that investors value a second rating. Bond issues with two identical ratings have yields significantly less than issues receiving that rating from only one rating agency. 相似文献
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Leveraged Acquisitions and the Market for Corporate Control 总被引:1,自引:0,他引:1
What is the function of the market for corporate control? Mike Wright and two colleagues outline the advantages of an active market in corporate control and review the consequences of leveraged buyouts. 相似文献
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Lifeline programs sponsored by the Federal Communications Commission (FCC) in cooperation with the states and Local Exchange Companies (LECs) are authorized to increase telephone penetration. Estimates of a variant of Perl's (1983) economic model with 1990 Census Data broken to the state level indicate that expenditures on these programs have a positive statistical effect on telephone penetration in most models. However, program elasticities are extremely small, suggesting that very large expenditure increases per poor household would have little effect on telephone penetration. Importantly, there is no relationship between the size of the state program elasticity and the level of state income or the magnitude of state poverty. We also demonstrate that the 1990 Census Data is superior to the Current Population Survey as a data base. 相似文献
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A telephone demand model (logit) is estimated with pooled Decennial Census data (1970, 1980 and 1990) for the states. Previous studies using pooled FCC penetration data are suspect due to large standard errors in the sample. Since our model includes data across time this allows the inclusion of long distance price and increases the variation in the standard variables. Time-effect dummy variables control for unobserved shifts in the data. Given that these dummy variables may pick up some of the effect of the long distance price, as well as other unobserved effects, their estimated impact is relatively small. Robust model results lead to the conclusion that elasticities decline through time. Furthermore, while subsidized penetration is more effective for targeted than untargeted programs, the cost per year of adding a household to the network is very high in either case (for 1990 about $5368 for untargeted; and for targeted $191 in 1990 and $1581 in 1998). 相似文献