Variance estimation based on blocked 3×2 cross-validation in high-dimensional linear regression

In high-dimensional linear regression, the dimension of variables is always greater than the sample size. In this situation, the traditional variance estimation technique based on ordinary least squares constantly exhibits a high bias even under sparsity assumption. One of the major reasons is the high spurious correlation between unobserved realized noise and several predictors. To alleviate this problem, a refitted cross-validation (RCV) method has been proposed in the literature. However, for a complicated model, the RCV exhibits a lower probability that the selected model includes the true model in case of finite samples. This phenomenon may easily result in a large bias of variance estimation. Thus, a model selection method based on the ranks of the frequency of occurrences in six votes from a blocked 3×2 cross-validation is proposed in this study. The proposed method has a considerably larger probability of including the true model in practice than the RCV method. The variance estimation obtained using the model selected by the proposed method also shows a lower bias and a smaller variance. Furthermore, theoretical analysis proves the asymptotic normality property of the proposed variance estimation.     

Producing mobility: visual narratives of the rural migrant worker in Chinese television

This paper employs literatures of mobility to explore the ways which rural migrant workers in China are represented publicly via television drama. Through an analysis of the popular serial Mingong, the paper examines the underlying politics of contemporary migration in China through three themes: the territorialisation of rural and urban spaces; the embodiment of boundaries via corporeal practices and subjectivities; and the politicisation of rural migrant desires. This analysis demonstrates the significance of television in crafting discursive understandings of mobility and migrants that are suffused with contemporary governmentalities of generating but also managing and excluding migration.     

翻译理论视角下的戏剧剧本翻译及原则

随着中外文化交流的日渐频繁与深入,中国要向世界展现华夏文明和中国文化,而戏剧正是文化的精髓。我国有丰富的剧种和曲目繁多的优秀剧目,要有效地展现中国文化就要让优秀剧目跨出国门尽显中国戏剧的魅力。然而由于戏剧剧本的内容有大量的文言句式和诗词曲赋,在翻译中要有效地传递诗词曲赋的意象美面临很多挑战。同时,戏剧剧本的内容中还有大量的古代典故和戏剧术语,这些对于中国人都陌生的中国元素要有效地传递给全世界的朋友就需要有高质量的翻译。翻译的高质量需要有效翻译理论的指导,文章尝试用翻译剧本为例,阐述翻译理论指导下的戏剧剧本翻译的翻译原则。     

中等职业教育财政投入现状分析与对策研究——以河北省为例

文章通过发放调查问卷,归纳、整理“十二五”期间的财务会计报表对河北省中等职业教育财政投入状况进行了分析,揭示了存在的主要问题,提出了改进中等职业教育财政投入机制的对策和建议。     

Family Characteristics and Mate Selection: Evidence From Computer‐Assisted Dating in Japan

Research on mate selection rarely considers singles' preferences for their future partners' family configurations and experiences. Using online dating records from a matchmaking agency in Japan, a society with a strong emphasis on family and kinship, we examine how singles' responses to date requests correspond to potential mates' family circumstances. Results showed that singles' preferences for potential partners' family characteristics stem from a concern about future obligations toward the partner's family and stereotypes associated with certain family traits. Singles are less likely to accept requests from those from large families, which are seen as traditional. Being from a large family, however, hampers individuals' dating chances more if they are firstborn and have no brothers, two conditions that make them the designated child to care for elderly parents. We also find that Japanese singles seek partners with more of the universally valued family traits rather than traits similar to their own.     

Motherhood Penalties and Living Arrangements in China

Past research on the “motherhood wage penalty” has been based on data from nuclear families, leaving open the possibility that the motherhood wage penalty may be lower or even absent in multigenerational families. In this article, the wage gap between mothers and nonmothers is examined in nuclear and multigenerational families in the context of contemporary China, which has a long tradition of patriarchal families. Using 1993 to 2006 China Health and Nutrition Survey data, the magnitude and variation of motherhood penalty is explored with fixed effects models among 1,058 women. The results show that each additional child lowers hourly wages by about 12%. In addition, the motherhood penalty is largest for women living with their husbands' parents, smaller for women not living with parents, and nil for women living with their own parents.     

中国式创业失败：归因、学习和后续决策

  失败是多数创业活动的必然结果,创业者对创业失败的行为反应是创业研究的一个重要议题。意义建构是一个嵌入式的社会化过程,文化是影响创业者意义建构创业失败的重要因素,中国创业者对创业失败的行为反应可能有别于西方创业者。然而,已有关于创业失败的研究主要来自欧美国家,对中国创业者在创业失败之后的行为研究很少。此外,中国的相关研究主要是概念性研究,缺少质化或量化的证据。因此,有必要探索中国情景下创业者在创业失败后的行为反应的独特规律。         基于文化比较视角,使用中国创业失败的典型事例,采用扎根理论设计,以中国创业者对创业失败的归因、学习和后续决策为切入点进行探索性研究,并与欧美研究的结果进行比较。通过霍夫斯泰德文化维度理论对中西方创业者在创业失败之后的行为差异进行分析并提供解释,提出中国式创业失败在归因、学习和后续决策方面的7个命题。         研究结果表明,与欧美创业者相比,中国创业者在创业失败后的总体归因倾向、内部归因倾向、外部归因倾向、学习内容、学习导向和后续创业意向等方面存在独特规律;文化是创业者在创业失败之后行为反应的重要影响因素,不同文化维度的具体取向会对创业者在创业失败后的行为反应产生不同的影响。         研究结果增强了对中国创业者如何对创业失败归因、如何从创业失败中学习以及在创业失败之后倾向选择坚持还是放弃这3个问题的认识,为中国本土化的创业失败研究提供了经验证据;强调了文化在创业失败研究中的重要作用;深化和拓展了创业失败归因、学习和后续决策的相关理论,为未来进一步的理论研究提供了思路。研究结论为创业者管理失败、推动创业教育改革、营造更有利于连环创业的制度环境提供了有针对性的建议。     

维汉关系中族群意识与国家认同的实证分析

民族问题是现代国家中的重大政治问题.我国是一个统一的多民族国家,民族问题处理得成功与否,直接影响到民族地区的民族团结、经济发展、社会稳定和国家统一.本文以族群意识和国家认同的视角,运用现代统计学方法,利用相关调查数据,对新疆两大族群--维汉族群关系状况进行实证分析,以期对进一步促进民族和谐和国家认同提供政策建议.     

我国社区矫正工作社会化模式的建构——基于社区矫正工作目标的分析

社区矫正是社会化的刑罚执行方式,但从实践运作看,我国社区矫正的社会化程度依然不够,没有最大效度地达到社区矫正的目标.本文在对社区矫正工作目标进行分析的基础上,提出了我国社区矫正工作的社会化模式:基于责任共担的社区服刑环境建设、基于社会工作方法的个案矫正模式、基于社会人力资源的社会帮教工作.     

公务员心理健康与自我调适

近年来,我国社会转型加速,公务员面临的矛盾问题凸显,工作量和工作难度都空前加大,使其普遍感受到较大的心理压力,他们的心理比普通人更容易产生不稳定因素。从心理健康角度出发,研究国家公务员心理健康问题,探讨心理调适的方法,对于提升公务员的素质,提高执政能力具有非常重要的现实意义。