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61.
62.
Felix Brandt Maria Chudnovsky Ilhee Kim Gaku Liu Sergey Norin Alex Scott Paul Seymour Stephan Thomassé 《Social Choice and Welfare》2013,40(3):739-743
In 1990, motivated by applications in the social sciences, Thomas Schwartz made a conjecture about tournaments which would have had numerous attractive consequences. In particular, it implied that there is no tournament with a partition A, B of its vertex set, such that every transitive subset of A is in the out-neighbour set of some vertex in B, and vice versa. But in fact there is such a tournament, as we show in this article, and so Schwartz’ conjecture is false. Our proof is non-constructive and uses the probabilistic method. 相似文献
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64.
Ewan Coates Alex Blaszczynski 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2013,29(4):631-645
Learning theory predicts that, given the repeated choice to bet between two concurrently available slot machines, gamblers will learn to bet more money on the machine with higher expected return (payback percentage) or higher win probability per spin (volatility). The purpose of this study was to investigate whether this occurs when the two machines vary orthogonally on payback percentage and volatility. The sample comprised 52 first year psychology students (mean age = 20.3 years, 20 females, 32 males) who had played a gaming machine at least once in the previous 12 months. Participants were administered a battery of questionnaires designed to assess level of knowledge on the characteristics and operation of poker machines, frequency of poker machine play in the past 12 months, personality traits of impulsivity and capacity for cognitive reflection, and gambling beliefs. For the experimental task, participants were instructed to play on two PC-simulated electronic gaming machines (EGMs or slot machines) that differed on payback percentage and volatility, with the option of freely switching between EGMs after a practice phase. Results indicated that participants were able to easily discriminate between machines and manifested a preference to play machines offering higher payback or volatility. These findings diverged from previous findings of no preference for play on higher payback/volatility machines, potentially due to of the current study’s absence of the option to make multi-line and multi-credit bets. It was concluded that return rate parameters like payback percentage and volatility strongly influenced slot machine preference in the absence of betting options like multi-line bets, though more research is needed to determine the effects of such betting options on player distribution of money between multiple EGMs. 相似文献
65.
This study examines new immigrants from the former USSR, their attitudes, expectations and the awareness of change in themselves and in their fellow immigrants. Participants demonstrated attitudes toward the new society which differed dramatically depending on the sphere of life being examined: cultural, institutional, or quotidian. Participants displayed a tendency toward integration in the institutional and quotidian spheres, but not in the cultural. An attitude toward integration did not automatically lead to an awareness of change in the new immigrants themselves. Participants consistently reported higher degrees of change in fellow immigrants in comparison to themselves. The issue of preservation of self‐identity through socio‐cultural conservation is discussed, as well as the relevance of these findings for Vygotsky's cultural‐historical theory and Feuerstein's theory of mediated learning. 相似文献
66.
Alex Dennis 《Symbolic Interaction》2011,34(3):349-356
Symbolic interactionism and ethnomethodology, while apparently similar in topic and approach, are radically different sociological perspectives. Garfinkel's notion of a plenum is used to illustrate this difference with regard to their approaches to the concept of interaction. Ethnomethodology's rejection of the concepts of actor and context, and its different treatment of meaning, are contrasted with symbolic interactionism's terms of reference. 相似文献
67.
Self-exclusion is a programme utilized by the gaming industry to limit access to gaming opportunities for problem gamblers. It is based on the following principles: (1) The gaming industry recognizes that a proportion of community members gamble excessively and have difficulty controlling gambling behaviours; (2) The gaming industry has a responsibility to provide a safe gaming environment and to assist in minimizing the negative impact on individuals displaying problem gambling behaviours; (3) Individuals must accept personal responsibility for limiting gambling behaviours to affordable levels; and (4) Self-exclusion is not a treatment designed to address psychological processes. The objective of the present paper is to propose a unifying structure for self-exclusion programmes as a gateway to treatment based on a system operated by independent ‘educators’ whose roles and responsibilities include informing individuals of the purpose of self-exclusion, establishing links and a gateway for access to supplementary services and monitoring and reporting the effectiveness of the overall programme. 相似文献
68.
Alex Thomson 《Journal for Cultural Research》2013,17(4):295-308
Derrida’s account of forgiveness appears to oppose politics to ethics, challenging political reconciliation in the name of unconditional forgiveness. Yet at the same time Derrida seems to sacrifice ethics to politics by advancing but refusing to take the side of what he calls an “indecent objection” to reconciliation. This essay seeks to account for Derrida’s strategy and to think through some of the consequences of Derrida’s emphasis on the “impossibility” of forgiveness. 相似文献
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