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Evidence is presented regarding strengths and limitations of portfolio approaches as applied to diversifying export earnings. An empirical application using data from Malawi, Tanzania, and Zimbabwe is used to demonstrate these strengths and limitations. Modifications of the typical portfolio approach to export diversification are presented; these modifications help make the approach more plausible for use in developing countries. The modified approach is shown to provide guidance to policymakers who seek simultaneously to increase export earnings and reduce their instability.  相似文献   
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Epidemics tend to have a debilitating influence on the lives of directly afflicted families. However, the presence of an epidemic can also change the behaviour and outcomes of those not directly affected. This paper makes use of a short, sharp, unexpected epidemic to examine the behavioural response of the public to a sudden shift in the perceived risk to one’s health and mortality. Our analysis finds that unafflicted school students change their behaviour substantially, affecting important life outcomes. In particular, we find that between 1.9 and 4.7 fewer students, out of a typical cohort of 47 pupils, sit their school leaving examination for every additional 10 cases of severe Dengue per 10 000 inhabitants in a municipality. We rule out several possible mechanisms, leaving an increase in the salience of the disease’s risks as a plausible explanation for our findings.  相似文献   
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Decision-making processes are studied using non-standard all-pay structures. Our interest is motivated by regulatory, political, legal, military, and economic applications in which individual actions determine the consequences for a larger group or the general public. The common features of these examples are a competitive environment, a winner-takes-all reward structure, and some form of all-pay-all payment rule.  相似文献   
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Abstract: J.E. (Ted) Hodgetts was influenced by both the political economy approach that he learned at the University of Toronto and by the comprehensive historical method developed by Leonard White, under whom he studied at Chicago. His first great project, Pioneer Public Service, convinced him that responsible government was impossible without responsible public administration. The authors examine how his response to management theories and practices evolved following his participation in the Glassco, Lambert and Gomery commissions. Hodgetts consistently refused the complete separation of politics and administration, and he promoted the use of management techniques to strengthen parliamentary supervision of the public service. The two key components of his legacy are thus a commitment to the democratic values of representative government and the comprehensive study of the internal dynamics of public administration in interaction with the relevant environmental factors.  相似文献   
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The new democratic left interprets socialism as involving the radical democratization of civil society and the state. Both conceptions of democracy and conceptions of socialism are variations on the theme of a self-govering community. The first part of this paper explores the diversity of accounts of democracy and of the issues in dispute between them. Part 2 then proceeds to identify conceptual difficulties with these ideas, and to examine some of their consequences for political analysis. While the theme of a self-governing community has always been somewhat problematic there are significant features of the modern world that further undermine any plausibility it may once have had. These conceptual weaknesses inherent in ideas of democracy and of socialism limit their untility as tools of political argument, and help to account for some of the difficulties socialists have in coming to terms with the world in which they now find themselves. The argument is not that the idea of socialism as enhanced democratization should be abandoned, but rather that such an idea is radically incomplete. A socialism that is worthy of support must address the substantive social and political problems of the societies in which it operates. The slogan of democratization is of limited value in identifying those problems or in establishing solutions to them.  相似文献   
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