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This paper describes an algorithm for determining the best subset of k variables in regression problems using any LP-norm with 1≤p<∞. The procedure is based on partial enumeration. It also makes a suggestion for finding the equation with least prediction error.  相似文献   
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We consider the Lindeberg-Feller model for independent random variables and focus our attention on the behaviour of the probability densities q_{n} of sums S_{n}, n\geq 1 . We obtain a theorem on the convergence of q_{n} to the standard normal density \varphi which resembles the well known limit theorem for distribution functions--provided that the q_{n} are positive definite. A special case is the following: if q_{n}(0)\rightarrow\varphi(0) as n\rightarrow\infty then the Lindeberg condition guarantees that the convergence of q_{n} to \varphi continues to the real line.  相似文献   
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Social Indicators Research - The article The Impact of Agricultural Technologies on Poverty and Vulnerability of Smallholders in Ethiopia: A Panel Data Analysis, written by Wubneshe Dessalegn Biru,...  相似文献   
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When randomly assigning participants to experimental roles and the according payment prospects, participants seem to receive “manna from heaven.” In our view, this seriously questions the validity of laboratory findings. We depart from this by auctioning off player roles via the incentive compatible random price mechanism thus avoiding the selection effect of competitive second price auctions. Our experiment employs the generosity game where the proposer chooses the size of the pie, facing an exogenously given own agreement payoff, and the responder is the residual claimant. We find that entitlement crowds out equality seeking and strengthens efficiency seeking. More generally, we find that inducing entitlement for the roles in which participants find themselves makes a difference. Interpreting participants’ willingness to pay for their role as their aspiration level further allows to test satisficing and explore “mutual satisficing.” We find that responder participants apparently do not anticipate proposer generosity in aspiration formation.  相似文献   
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ABSTRACT

China’s mobility turn has created the world’s largest public rail system, contributing extensively to citizens’ economic, social, and spatial mobility. Concurrently, this technological transformation has introduced many opportunities for individuation, which could potentially challenge the social, collectivistic, and Confucian foundations of China’s sociocultural and political ideology. While the notion that ‘mobility produces culture’ is readily accepted, research on train mobility in China is rare. In this study, we use Albert Bandura’s Model of Triadic Reciprocal Causation to conceptualize mobility as agency. We employ Hermeneutic Content Analysis, a mixed methods framework, to study how this rapidly evolving mobility environment connects to the lives of 31 regular train users living in Beijing. Studying agency in China enables us to systematize the sociocultural models within which mobility practices are embedded and how they manifest. We find that our interviewees embed agentive practices in a cultural model that is intertwined with collectivistic aspirations of the country. Technological developments are thus integrated into existing sociocultural models and political expectations, contradicting existing debates on the fracturing impact of disruptive technologies.  相似文献   
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The European research project SIREN analysed subjective perceptions and interpretations of changes in working life and their interrelation with political orientations. This article presents the results of the qualitative part of the research in Austria. The findings lead to a better understanding of the appeal to various population groups of rightwing populism and allow an empirical scrutiny of related theses. In particular, the contribution describes, by way of a typology, the variety of reasons as to why people take on authoritarian-exclusivist orientations and accept right-wing populist political propositions. The core question is how subjective perceptions and interpretations of socioeconomic change are transformed into political subjectivity.  相似文献   
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本文是曼弗雷德·鲍姆(Manfred Baum)教授2008年10月3日在武汉大学哲学学院所作讲演的译稿.文中对康德<道德形而上学>一书划分成"法权论"和"德行论"的来由、理论根据和基础进行了分析,认为康德摧毁了传统的自然法学说,而把法权和德行全都建立在人的自由之上,视为人的义务的内外两方面.同样作为定言命令,康德的法权原则是分析命题,德行原则是综合命题,前者对人的目的不作要求,后者则要求人把人格和人性当作目的.但法权毕竟要以道德为前提和评价标准,而道德本身的评价标准则是从外部合法性向内部行动"转移"而来的,这是一个矛盾.  相似文献   
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