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31.
We propose a procedure for dividing a set of indivisible items between two players. We assume that each player’s preference over subsets of items is consistent with a strict ranking of the items, and that neither player has information about the other’s preferences. Our procedure ensures an envy-free division—each player receives a subset of items that it values more than the other player’s complementary subset—given that an envy-free division of “contested items,” which the players would choose at the same time, is possible. We show that the possibility of one player’s undercutting the other’s proposal, and implementing the reduced subset for himself or herself, makes the proposer “reasonable,” and generally leads to an envy-free division, even when the players rank items exactly the same. Although the undercut procedure is manipulable and its envy-free allocation may be Pareto-inferior, each player’s maximin strategy is to be truthful. Applications of the procedure are discussed briefly. 相似文献
32.
Philipp Korom Christian Fleck 《KZfSS K?lner Zeitschrift für Soziologie und Sozialpsychologie》2012,64(4):755-782
This paper investigates the impact of the social structure on the persecution of homosexuals in Austria during the Nazi regime and the following democratic Republic. So far local studies for the German case have come to the conclusion that the middle class has been victim to the same, or event to a greater extent, of state-supported homophobia as the lower social class. An analysis of court files confirms this finding partly but reveals the working class as the mainly affected social group in the Austrian case. Social status, however, did only have a marginal influence on the length of imprisonment. The fact that different occupational groups were overrepresented among the sentenced homosexuals in the two considered periods of time (1938?C1944; 1945?C1955) points to systematic patterns of repression. As historical data is sparse we can only formulate hypotheses on why certain persons were more likely to be sentenced for being homosexual than others. 相似文献
33.
The increase of driver information and infotainment systems includes also interaction technologies like speech interaction that minimize visual-manual demand and put the focus to cognitive demand. The question is whether this could lead to distraction effects and decreased traffic safety. This study presents an evaluation method for cognitive demand based on different detection paradigms in a dual task setting. A listening and a backward counting task are realized on three difficulty levels as simulations of cognitively loading secondary tasks and investigated using a visual versus a tactile detection paradigm. The results show that both detection paradigms are able to discriminate the task levels and that subjects successfully apply compensation strategies in the dual task setting especially during the listening task. 相似文献
34.
The study investigated the role of recovery and detachment in the break period between two shifts for fatigue in the current shift. A time-based paper-and-pencil diary study was carried out observing sixty-four railway controllers over ten consecutive working shifts. The results demonstrated that fatigue in the current shift was not only affected by recovery and psychological detachment during break phases before a shift, but also by fatigue at shift onset and perceived workload during the shift. 相似文献
35.
Sexual abuse of children has been a topic of scientific investigation for the past few decades. Research in this area, however, is rarely initiated, conceptualized, and conducted by victims themselves. Apart from possibly having painted a one-sided picture of sexual abuse, this presumed dominance of nonvictims might also have marginalized victims in a research area central to their lives. This study was conducted by a victims interest group as an effort to meet the need to add victims' perspectives to our current understanding of this topic. The online survey focused on investigating victims' psychosocial impairment, which was found to be extensive. Results indicated that an intact social support system facilitates better health, especially when offered early on. 相似文献
36.
Christian S. Czymara Alexander W. Schmidt-Catran 《KZfSS K?lner Zeitschrift für Soziologie und Sozialpsychologie》2016,68(2):193-227
Germany is currently experiencing a huge inflow of migrants. In this vignette study, we analyze how much different kinds of migrants are accepted in Germany. We investigate three different rights for migrants: the right to stay in Germany, the right to work in Germany and the right to receive social benefits. Our results show that people who flee from political persecution are much more accepted compared to migrants who come because of economic reasons. This is particularly true for the right to receive social benefits. On the other hand, our results suggest that there is a strong preference for high-skilled and culturally non-distant migrants. Concerns regarding individual competition on the job market seem to play only a minor role. 相似文献
37.
The impossibility of unbiased judgment aggregation 总被引:1,自引:0,他引:1
Standard impossibility theorems on judgment aggregation over logically connected propositions either use a controversial systematicity condition or apply only to agendas of propositions with rich logical connections. Are there any serious impossibilities without these restrictions? We prove an impossibility theorem without requiring systematicity that applies to most standard agendas: Every judgment aggregation function (with rational inputs and outputs) satisfying a condition called unbiasedness is dictatorial (or effectively dictatorial if we remove one of the agenda conditions). Our agenda conditions are tight. When applied illustratively to (strict) preference aggregation represented in our model, the result implies that every unbiased social welfare function with universal domain is effectively dictatorial. 相似文献
38.
The East Asian welfare model 总被引:1,自引:2,他引:1
Christian Aspalter 《International Journal of Social Welfare》2006,15(4):290-301
This article aims to outline main features of the East Asian welfare model, to understand its past development and assess lessons that can be learned for other developing and developed countries. It describes the particular path of welfare state development in Japan, South Korea, Taiwan, Hong Kong and Singapore, by focusing particularly on developmental and political aspects of welfare state development. In the final part of the study, particular features of the East Asian welfare model are outlined, and thus the existence of a distinct, ideal-typical welfare regime in East Asia substantiated. 相似文献
39.
Loes G. M. van Rijsewijk Tom A. B. Snijders Jan Kornelis Dijkstra Christian Steglich Ren Veenstra 《Journal of research on adolescence》2020,30(1):63-77
The aim of this study was to unravel the interrelatedness of friendship and help, and to examine the characteristics of friendship and help networks. The effects of mutual versus one‐sided help relations on friendship initiation and maintenance, and vice versa, were examined. Friendship and help networks were analyzed (N = 953 students; 41 classrooms; Mage = 12.7). The results illustrate that friendship and help networks show some similarities, but only partly overlap and have distinct characteristics. Longitudinal multiplex social network analyses showed that mutual help was important for the maintenance of friendship, but not for the initiation of friendship. Further, particularly mutual friendships provided a context in which help took place. Implications of these findings are discussed. 相似文献
40.
We derive a novel non-reversible, continuous-time Markov chain Monte Carlo sampler, called Coordinate Sampler, based on a piecewise deterministic Markov process, which is a variant of the Zigzag sampler of Bierkens et al. (Ann Stat 47(3):1288–1320, 2019). In addition to providing a theoretical validation for this new simulation algorithm, we show that the Markov chain it induces exhibits geometrical ergodicity convergence, for distributions whose tails decay at least as fast as an exponential distribution and at most as fast as a Gaussian distribution. Several numerical examples highlight that our coordinate sampler is more efficient than the Zigzag sampler, in terms of effective sample size. 相似文献