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21.
By modifying the direct method to solve the overdetermined linear system we are able to present an algorithm for L1 estimation which appears to be superior computationally to any other known algorithm for the simple linear regression problem. 相似文献
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It is shown in this article that, given the moments of a distribution, any percentage point can be accurately determined from an approximation of the corresponding density function in terms of the product of an appropriate baseline density and a polynomial adjustment. This approach, which is based on a moment-matching technique, is not only conceptually simple but easy to implement. As illustrated by several applications, the percentiles so obtained are in excellent agreement with the tabulated values. Whereas statistical tables, if at all available or accessible, can hardly ever cover all the potentially useful combinations of the parameters associated with a random quantity of interest, the proposed methodology has no such limitation. 相似文献
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Language is a communication medium for turning a power base into influence. But more than that, the creation of power and its maintenance or change can also occur in and through language. In the present article, we discuss some of the dynamic links between language and power to underscore their relevance to the study of intergroup relations. In particular we address the means by which low-power groups might achieve power, and how those who are in high-power positions might retain and subvert acts of power. In doing this, we counterpose our discussion with research that addresses these same issues from a static and individualistic approach to power. Our central argument is that the latter work lacks theoretical facility for describing and understanding the aforementioned dynamic processes of power, and moreover, that its application may unwittingly serve to reify and cement existing control relationships. 相似文献
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Korean society is experiencing a rapid increase in alcohol consumption among women. Research on women's alcohol use has focused mostly on problems and pathological symptoms associated with alcohol use. Focusing only on problems of alcohol use risks overlooking some important social phenomena where alcohol use is a medium. We examined the association between marital status, childcare responsibility, employment status and social drinking behaviour. Our aim was to examine how these factors influence women's alcohol consumption in order to provide an empirical explanation of how the traditional division of labour limits women's social drinking practices. Findings show that women are structurally excluded from social drinking behaviour due to domestic responsibilities (as a wife and a mother). In other words, social drinking has become another glass ceiling for women. Key Practitioner Message: ● Attention should be given to structural influences on women's alcohol use; ● It is important to consider gender inequality in both formal and informal domains. 相似文献
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文章在对我国民事诉权保障制度进行反思的基础上,分析了民事诉权保障制度的缺陷及其在司法实践中存在的主要问题,并从社会文化背景、法律文化权利观、法律制度运行机制三个方面揭示我国民事诉权保障不力的主要原因,进而提出完善我国民事诉权保障的建议。 相似文献
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This study presents a control chart for monitoring shifts in the covariance matrix of a multivariate normally distributed process. This chart combines the double sampling, variable sample size and variable sampling interval features, and is called the DSVSSI |S| chart. A Markov chain approach is developed to design the DSVSSI |S| chart, by minimizing the average time to signal (ATS), for a specified shift size in the covariance matrix. The DSVSSI |S| chart has a better ATS performance compared to other existing charts. An example is given to illustrate the operation of the DSVSSI |S| chart. 相似文献
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Subharati Ghosh Jung-Hwa Ha Manacy Pai Harper Essenfeld 《Journal of gerontological social work》2016,59(1):56-72
The study examined the effect of adult children’s disability on parents’ physical health in later life and the extent to which parents’ symptoms of alcoholism in mid-life moderates the link between children’s disability and later life parental health. Analyses are based on data from the Wisconsin Longitudinal Study. The analytic sample included parents of children with developmental disabilities (n = 145) or mental health problems (n = 200) and 2,432 parents of unaffected children. The results showed that the negative health consequences in later life of having a child with a developmental disability were greater for those who showed more symptoms of alcoholism in mid-life. However, symptoms of alcoholism in mid-life did not significantly moderate the impact of an adult child’s mental health problems on parents’ later life physical health. The findings suggest a potential area where gerontological social workers could intervene, given the negative impact of symptoms of alcoholism on the health of aging parents of children with a disability who may be significantly more susceptible to the negative health impacts of alcohol compared to their younger counterparts. 相似文献
30.
The Revenge of History – The Institutional Roots of Post‐Communist Family Policy in the Czech Republic,Hungary and Poland
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The authors combine historical and sociological institutional analysis to show that despite the political and socio‐economic transformation in 1990s, the institutional development during and before the communist era provides the best explanation for current childcare policies in Central Europe. While most authors have concentrated on policy changes that have taken place in the region since 1989, this article concentrates on the historical roots of these policies and shows that today's policies are highly influenced by a certain dynamics that had already emerged under communist rule. It shows that a historical institutional approach, which analyses the ‘gendered logic of appropriateness’ and policy legacies at various critical junctures, can explain why family policies in Central Europe had already begun to differ during the communist era, why these main differences continue and why even the changes that have taken place follow logically from historical‐institutional developments. 相似文献