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Jerry S. Kelly 《Social Choice and Welfare》1993,10(2):161-175
Explores, for several classes of social choice rules, the distribution of the number of profiles at which a rule can be strategically manipulated. In this paper, we will do comparative social choice, looking for information about how social choice rules compare in their vulnerability to strategic misrepresentation of preferences.I am indebted to Universidad Internacional Menendez Pelayo for an invitation to present an early version of this paper at a June, 1989 conference at Valencia, Spain. Thanks for comments go to the participants of that conference, especially Salvador Barbera; also for comments at seminars at Syracuse University and the University of Rochester. 相似文献
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Jason Abrevaya Jerry A. Hausman Shakeeb Khan 《Econometrica : journal of the Econometric Society》2010,78(6):2043-2061
A unifying framework to test for causal effects in nonlinear models is proposed. We consider a generalized linear‐index regression model with endogenous regressors and no parametric assumptions on the error disturbances. To test the significance of the effect of an endogenous regressor, we propose a statistic that is a kernel‐weighted version of the rank correlation statistic (tau) of Kendall (1938). The semiparametric model encompasses previous cases considered in the literature (continuous endogenous regressors (Blundell and Powell (2003)) and a single binary endogenous regressor (Vytlacil and Yildiz (2007))), but the testing approach is the first to allow for (i) multiple discrete endogenous regressors, (ii) endogenous regressors that are neither discrete nor continuous (e.g., a censored variable), and (iii) an arbitrary “mix” of endogenous regressors (e.g., one binary regressor and one continuous regressor). 相似文献
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Supply chain partnership involves mutual commitments among participating firms. One example is early order commitment, wherein a retailer commits to purchase a fixed‐order quantity and delivery time from a supplier before the real need takes place. This paper explores the value of practicing early order commitment in the supply chain. We investigate the complex interactions between early order commitment and forecast errors by simulating a supply chain with one capacitated supplier and multiple retailers under demand uncertainty. We found that practicing early order commitment can generate significant savings in the supply chain, but the benefits are only valid within a range of order commitment periods. Different components of forecast errors have different cost implications to the supplier and the retailers. The presence of trend in the demand increases the total supply chain cost, but makes early order commitment more appealing. The more retailers sharing the same supplier, the more valuable for the supply chain to practice early order commitment. Except in cases where little capacity cushion is available, our findings are relatively consistent in the environments where cost structure, number of retailers, capacity utilization, and capacity policy are varied. 相似文献
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Kate A. Morrissey Stahl Jerry Gale Denise C. Lewis Douglas Kleiber 《Journal of gerontological social work》2018,61(6):659-674
People who divorce experience a number of negative impacts, and yet divorce also offers opportunities for growth and transformation. This qualitative study of older adult women offers the possibility that divorce may be sexually empowering, especially for women, based on in-depth interviewing of women who had gone through one or more divorces. Detailed examples of the experiences of fourteen women with divorce and sexual expression are offered, focusing on in which situations divorce might be empowering and how it could contribute to sexual exploration and satisfaction. Overall, for the fourteen women in the study who had experienced divorce, the quality of sex in the marriage impacted the quality of sexual expression after the divorce. Also, these findings supported the idea of transformational learning through divorce, and expand divorce-stress-adjustment and transformational learning perspectives to apply more specifically to sexual expression. Understanding possible impacts of divorce over the lifespan, including strengths-based aspects, is important for social workers as the population they serve ages. 相似文献
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Abstract This paper reports the results of a national study designed to identify preferred curriculum content important to the “professional foundation” in social work education. All BSW program directors were surveyed, using the Delphi Technique, to evaluate potential curriculum content The heavy response indicated a strong interest in this timely issue. The authors found that there is a high degree of consensus on curriculum material thought to be appropriate for a professional foundation. 相似文献
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This study is aimed at identifying central themes of bereavement. A qualitative approach was employed in the analyses of interviews with 22 bereaved parents. The analyses yielded four central issues or themes of bereavement, each with its own set of sub-themes or categories, as the narrative demanded. The first of these themes, pertaining to the life of the family before the death of a child had taken place, was named the risk factor. Circumstances leading up to the death, surrounding the death, the cause of death, and the events following the death were coded as bereavement circumstances. The grief reactions codes were divided into categories of emotional, physical, behavioral, relational, spiritual, and cognitive reactions, as described by the participants. Finally, the mourning codes described the mechanisms employed by the participants in their attempts to survive and continue living after the death. These findings can be used in the training of support workers and the development of bereavement interventions. 相似文献