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1.
A method is given for quantitatively rating the social acceptance of different options which are the matter of a complete preferential vote. Completeness means that every voter expresses a comparison (a preference or a tie) about each pair of options. The proposed method is proved to have certain desirable properties, which include: the continuity of the rates with respect to the data, a decomposition property that characterizes certain situations opposite to a tie, the Condorcet?CSmith principle, and clone consistency. One can view this rating method as a complement for the ranking method introduced in 1997 by Markus Schulze. It is also related to certain methods of cluster analysis and one-dimensional scaling.  相似文献   
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This paper deals with the identification of treatment effects using difference-in-differences estimators when several pretreatment periods are available. We define a family of identifying nonnested assumptions that lead to alternative difference-in-differences estimators. We show that the most usual difference-in-differences estimators imply equivalence conditions for the identifying nonnested assumptions. We further propose a model that can be used to test multiple equivalence conditions without imposing any of them. We conduct a Monte Carlo analysis and apply our approach to several recent papers to show its practical relevance.  相似文献   
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From 1960 through 1972, Dr. Eugene Saenger oversaw the experimental administration of lethal and near‐lethal doses of radiation to hospital patients at the University of Cincinnati. These experiments were funded by the US Department of Defense, and were specifically designed to acquire military information on the effects of radiation in combat soldiers. Although Saenger's research was terminated after public exposure in 1971, a full and detailed account has not been available until now. The account provided by the President's Advisory Committee on Human Radiation Experiments (ACHRE) in their Final Report of 1995 was incomplete. Our account is based on a reanalysis of all the material available to ACHRE, including highly critical peer reviews by U.C. faculty members. We also present, for the first time, several case histories taken from the medical records of Dr. Saenger's subjects.  相似文献   
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Bootstrap in functional linear regression   总被引:1,自引:0,他引:1  
We have considered the functional linear model with scalar response and functional explanatory variable. One of the most popular methodologies for estimating the model parameter is based on functional principal components analysis (FPCA). In recent literature, weak convergence for a wide class of FPCA-type estimates has been proved, and consequently asymptotic confidence sets can be built. In this paper, we have proposed an alternative approach in order to obtain pointwise confidence intervals by means of a bootstrap procedure, for which we have obtained its asymptotic validity. Besides, a simulation study allows us to compare the practical behaviour of asymptotic and bootstrap confidence intervals in terms of coverage rates for different sample sizes.  相似文献   
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Much has been written about social lives of people with severe mental illness (SMI). Before social lives can flourish, however, people with SMI must first get close to other people. We studied this closeness by holding three hour-long focus groups at Fountain House, a community mental health agency in New York City. We found that closeness between two people with SMI is challenging because someone with depression, for example, may have trouble understanding someone with a different disorder (e.g., schizophrenia). Romantically, closeness is also challenging—SMI is hard to explain to partners. In the workplace, closeness is difficult because SMI can alienate co-workers. It could push them away. In mental health programs, we found that closeness has more of a chance to develop (1) during evening and weekend activities; (2) when activities are planned often enough to prevent isolation; and (3) when staff reach out to people before extended absence causes distance.  相似文献   
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The aim of this paper is to highlight the relevance of academic input to the accounting standard setting process by way of both ex-ante research and direct participation. We propose the Delphi methodology as a rigorous scientific way to analyse the perception of a new IASB accounting regulation from an “ex-ante” constituency perspective. We argue that this tool can be used as a useful complementary analysis to introduce timely and comprehensive additional feedback to standard-setters’ deliberations regarding the potential effects of their proposals when some conditions are met, and that gaining academic input in the process could make a difference. We apply this to the specific case of the IASB Management Commentary project. The main contribution of this study is to show how this research yields different perceptions that can add to the analysis of comment letters in the deliberations of the IASB. The most remarkable findings are (1) that the introduction of academic opinions (practically absent in the formal consultation process) yields important and different inputs and (2) that the characteristics of this tool allow for additional arguments, which are not usually evident in the formal comment letters, to be obtained from constituents. This study attempts to respond to the recent standard-setter call for more academic contributions to the standard-setting process.  相似文献   
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Mexican cinema, one of the most active in Latin America, dates from 1896, while sound film recently celebrated its fiftieth anniversary there. Among the many prominent Mexican cineasts whose films form a repertoire of solid artistic achievement is Alejandro Galindo. Like many fellow-filmmakers, directors and actors, Galindo did his aoprenticeship in Hollywood, returning to Mexico in 1930 to become one of Mexico's most creative and dynamic practitioners of cinematic art. Carl Mora highlights his accomplishments while placing him in the perspective of the development of the Mexican film industry. For example, during World War II the industry boomed because of the demand in Latin America for authentic Latin American cinema. With this impetus, Mexico (and Alejandro Galindo) enjoyed a decade of growth and popularity. Unlike most other Mexican cineasts, Galindo dealt with the dislocations that a rapidly changing economy and increased urbanization brought to both the workers and the middle class. Mora discusses several of his most important films, amply demonstrating the impact Galindo believed that cinema could have on society. He left a legacy that is admired today by critics and filmmakers.  相似文献   
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This study uses U.S. census data from the year 2000 to analyze the earnings of Mexican immigrants along the U.S.‐Mexico border while accounting for the location in which they work. The empirical results indicate that Mexican entrepreneurs who live in U.S.‐border cities but primarily operate in Mexico accrue a significant earnings premium over their entrepreneurial and salaried counterparts working on the U.S. side of the border, even after controlling for differences in observable characteristics. This work‐location earnings gap widens when focusing on Mexican business owners lacking U.S. citizenship. It follows that policies which reduce trade and labor flows across the U.S.‐Mexico border may inadvertently dampen the entrepreneurial activities of foreign‐born residents in U.S.‐border cities.  相似文献   
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