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In this paper, we provide an axiomatic characterization of social welfare functions for uncertain incomes. Our most general result is that a small number of reasonable assumptions regarding welfare orderings under uncertainty rule out pure ex ante as well as pure ex post evaluations. Any social welfare function that satisfies these axioms should lie strictly between the ex ante and the ex post evaluations of income distributions. We also provide an axiomatic characterization of the weighted average of the minimum and the maximum of ex post and ex ante evaluations. 相似文献
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Emmanuel Thibault 《Economic Theory》2005,25(2):401-419
Summary. Using the savers-spenders theory developed by Mankiw (2000, AER), we propose microfoundations to the existence of rentiers in macroeconomic growth models. From an OLG model which acknowledges the great heterogeneity of consumer behavior apparent in the data, we capture the dynamic considerations of potential rentiers as a natural consequence of intertemporal utility maximization and we analyze realistic characteristics (proportion, wealth, propensity to save) of rentiers.JEL Classification Numbers:
E13, D64, J22.This paper is adapted from the fourth chapter of my Ph.D Thesis. Then, I thank Alain VENDITTI, my Ph.D Supervisor and Antoine dAUTUME and Pierre PESTIEAU my Ph.D Referees. Earlier version of this paper were presented at the International conference: New perspectives on (un)stability: the role of heterogeneity at Marseille, June 7-9, 2001 and at the X-th Spring School of the Associated European Laboratory (CNRS-FNRS/CORE-GREC-GREQAM) at Aix, 2001. I thank conference participants, in particular Olivier CHARLOT, Christian GHIGLINO, Kiminori MATSUYAMA and Philippe MICHEL for suggestions, helpful comments and discussions. I also thank a referee of this journal for his constructive comments. 相似文献
106.
Maria Conceição A. Silva Portela Emmanuel Thanassoulis 《Journal of Productivity Analysis》2006,25(1-2):25-41
Traditional approaches to calculate total factor productivity (TFP) change through Malmquist indexes rely on distance functions. In this paper we show that the use of distance functions as a means to calculate TFP change may introduce some bias in the analysis, and therefore we propose a procedure that calculates TFP change through observed values only. Our total TFP change is then decomposed into efficiency change, technological change, and a residual effect. This decomposition makes use of a non-oriented measure in order to avoid problems associated with the traditional use of radial oriented measures, especially when variable returns to scale technologies are to be compared. The proposed approach is applied in this paper to a sample of Portuguese bank branches. 相似文献
107.
The adoption and use of information technology: a longitudinal study of a mature family firm 总被引:1,自引:0,他引:1
Through a longitudinal study of a mature family firm, this paper investigates the adoption and use of information technology in a family business. It is argued that the adoption and use of information technology is influenced by five key factors. These factors are discussed, leading to a presentation of a series of implications and conclusions. 相似文献
108.
The reasons which have been offered to explain the low labour market success encountered by ethnic minorities in Britain include their possible lack of motivation, lack of qualification and training opportunities, and discrimination in the labour market. Whilst discrimination as a contributory factor to labour market exclusion has been widely discussed in the literature, the efficacy of Government sponsored training schemes designed to equip ethnic minorities with skills which may improve their competitiveness and reduce their disadvantage has been subjected to less scrutiny. This article provides an evaluation of the role of Government sponsored employment training programmes in reducing ethnic minorities’ disadvantaged position in the labour market. It argues that training programmes designed to improve employment opportunities are failing members of the ethnic minority communities and are in some cases helping to extend their disadvantage. It identifies the reasons for the failure as (1) the constant changes in Government policies with the development of sometimes contradictory policies, and (2) the inefficiency and prejudice of the training and employing organisations which are involved in the process. The article concludes with an assessment of the consequences of continuing discrimination against ethnic minority communities. 相似文献
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N. Emmanuel Tambi 《Agricultural Economics》1999,20(1):57-67
Estimates of factors influencing Cameroon,s exports of cocoa, coffee and cotton are derived in a system of equations using the Engle-Granger and Johansen co-integration and error-correction representation procedures. Two co-integrating vectors involving cocoa and coffee exports as endogenous variables are identified in the system while tests for exogeneily of cotton exports are consistent with the independence of cotton from the other two commodities. These findings are corroborated by estimates of a restricted error-correction model which lead to acceptance of the hypothesis that cocoa and coffee exports are-indeed determined endogenously to the system and not linked to cotton exports. Statistical significance of the error-correction terms for cocoa and coffee validates the existence of an equilibrium relationship among the variables in each of these co-integrating vectors. The combined short run dynamic effect of lagged quantities of cocoa and coffee, export/domestic price ratio and GDP jointly explain changes in exports of cocoa whereas lagged quantities exported do not seem to have a significant short-run dynamic effect on changes in coffee exports. 相似文献