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Eric Maskin 《Theory and Decision》1979,11(3):319-337
A new investigation is launched into the problem of decision-making in the face of complete ignorance, and linked to the problem of social choice. In the first section the author introduces a set of properties which might characterize a criterion for decision-making under complete ignorance. Two of these properties are novel: independence of non-discriminating states, and weak pessimism. The second section provides a new characterization of the so-called principle of insufficient reason. In the third part, lexicographic maximin and maximax criteria are characterized. Finally, the author's results are linked to the problem of social choice. 相似文献
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More than the Sum of Its Parts: Cooperation and Mutual Commitment in Multi‐Issue Congregation‐Based Community Organizing
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Eric A. Tesdahl 《Sociological inquiry》2015,85(1):148-171
Congregation‐based community organizing (CBCO) federations play an important role in uniting a diverse array of religious congregations and community‐based organizations in movements for social justice at the neighborhood, regional, state, and national levels. Metropolitan‐level CBCO federations provide a novel and noteworthy example of meso‐mobilization contexts as described in the social movement literature in that many such federations engage in multiple concurrent issue campaigns. This study examines collaboration among organizational members of Communities Creating Opportunity, a CBCO federation based in Kansas City, Missouri. Qualitative interviews with organizers, clergy, and lay‐leaders, together with an analysis of organizational records, reveal a cooperative structure of interorganizational relations built upon specific organizing activities, roles, and relations. These activities, roles, and relations are in turn conditioned on each member organization's own level of connection to a particular organizing issue. Findings suggest that this innovative form of cooperative relational structure affords multi‐issue federations an enhanced capacity to mobilize voluntary labor resources and turn‐out at public events relative to single issue organizing. 相似文献
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David Wyatt Seal Eric G. Benotsch Marisa Green Daniel J. Snipes Sheana S. Bull Anna Cejka 《心理学和人类性特征杂志》2015,27(1):1-15
ABSTRACT. Objectives: Prior work suggests that many individuals use the Internet to meet romantic or sexual partners. Our intent was to explore perceptions and experiences with meeting people online. Methods: In 2008, the authors conducted U.S.-based online interviews with 65 predominantly White, self-identified heterosexual men and women and gay/bisexual men (Mean age = 30.8 years). Results: Reasons for meeting people online, desired partner characteristics, and the process of connecting for sex paralleled those observed in face-to-face contexts. People used Internet chat rooms to identify more partners and specific partner characteristics. “Background checks” of online partners, though often believed to be inaccurate, increased familiarity and trust leading to reduced condom use. Participants said online condom use negotiation was easier but usually occurred in face-to-face contexts. Conclusions: The fundamental processes of meeting partners online are similar in many ways to meeting partners face-to-face; however, the Internet facilitates rapid access to relatively large numbers of potential partners. 相似文献
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The particle Gibbs sampler is a systematic way of using a particle filter within Markov chain Monte Carlo. This results in an off‐the‐shelf Markov kernel on the space of state trajectories, which can be used to simulate from the full joint smoothing distribution for a state space model in a Markov chain Monte Carlo scheme. We show that the particle Gibbs Markov kernel is uniformly ergodic under rather general assumptions, which we will carefully review and discuss. In particular, we provide an explicit rate of convergence, which reveals that (i) for fixed number of data points, the convergence rate can be made arbitrarily good by increasing the number of particles and (ii) under general mixing assumptions, the convergence rate can be kept constant by increasing the number of particles superlinearly with the number of observations. We illustrate the applicability of our result by studying in detail a common stochastic volatility model with a non‐compact state space. 相似文献
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Bernard Koomson Esmeranda Manful Jonathan Mensah Dapaah Eric Henry Yeboah 《Children & Society》2022,36(1):101-117
The legal and policy framework on child trafficking is dismissive of children's agency and regards them as vulnerable personalities. This paper examines the scope of children's agency in their transportation to other communities for fishing in Ghana. Using a phenomenological design, 17 child returnees' views were elicited on their movement for fishing activities. Findings revealed that children's agentive capabilities progressed primarily from consent giving to negotiation. Highlighting the relational and material context within which children's agency unfolds, the study suggests that it is erroneous to generally ascribe the discursive label of ‘innocence’ to children who are considered as trafficked. 相似文献
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