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131.
132.
This paper analyzes the effects of scientific information dissemination on consumer and producer behavior. The first section draws heavily from evidence on the ready-to-eat cereal market during a period in which information developed about the health benefits of fiber cereal consumption. Although producers were initially prohibited from advertising these benefits, the regulatory ban against advertising was lifted during the period we study. Our results indicate that advertising was an important source of information leading to increased fiber cereal consumption and product innovation. The second part of our paper discusses the potential for deception if science-based claims are allowed. In the final section we consider a number of regulatory proposals that have been raised in the context of health claims for food products. We evaluate these proposals against the three goals of encouraging the dissemination of truthful information and discouraging the dissemination of deceptive or misleading information and their ability to keep pace with the changing science. 相似文献
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134.
The public provision of leisure services and the impact which this has on the community has become a political issue. Nowhere is this more the case than in Northern Ireland where economic and social problems, together with the Troubles, led to a massive increase in central government's sponsorship of public leisure provision in the 1970s. This was a political gesture made more political in the manner through which district councils and local government officials discharged their devolved responsibilities and the way in which local communities appropriated leisure facilities. The resultant pattern of leisure provision reflects existing community boundaries and, as such, reinforces rather than ameliorates sectarian divisions. 相似文献
135.
This article surveys various strategies for modeling ordered categorical (ordinal) response variables when the data have some type of clustering, extending a similar survey for binary data by Pendergast, Gange, Newton, Lindstrom, Palta & Fisher (1996). An important special case is when repeated measurement occurs at various occasions for each subject, such as in longitudinal studies. A much greater variety of models and fitting methods are available than when a similar survey for repeated ordinal response data was prepared a decade ago (Agresti, 1989). The primary emphasis of the review is on two classes of models, marginal models for which effects are averaged over all clusters at particular levels of predictors, and cluster-specific models for which effects apply at the cluster level. We present the two types of models in the ordinal context, review the literature for each, and discuss connections between them. Then, we summarize some alternative modeling approaches and ways of estimating parameters, including a Bayesian approach. We also discuss applications and areas likely to be popular for future research, such as ways of handling missing data and ways of modeling agreement and evaluating the accuracy of diagnostic tests. Finally, we review the current availability of software for using the methods discussed in this article. 相似文献
136.
Rich and Poor Countries in Neoclassical Trade and Growth 总被引:3,自引:0,他引:3
Alan V. Deardorff 《Economic journal (London, England)》2001,111(470):277-294
A neoclassical growth model provides an explanation for a 'poverty trap', 'club convergence', or 'twin peaks', in terms of specialisation and international trade. The model has many countries with identical linearly homogeneous technologies for producing three goods using capital and labour. With diverse initial endowments, initial equilibrium has unequal factor prices and two diversification cones. With savings out of wages, following Galor (1996), there may easily be multiple steady states. Poor countries converge to a low steady state while rich countries converge to a high one, even though all share identical technological and behavioural parameters. 相似文献
137.
Alan Greenspan 《Journal of Financial Services Research》2000,18(2-3):109-113
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Alan J. Dubinsky 《心理学和销售学》2015,32(11):1115-1116