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61.
We investigate empirical likelihood for the additive hazards model with current status data. An empirical log-likelihood ratio for a vector or subvector of regression parameters is defined and its limiting distribution is shown to be a standard chi-squared distribution. The proposed inference procedure enables us to make empirical likelihood-based inference for the regression parameters. Finite sample performance of the proposed method is assessed in simulation studies to compare with that of a normal approximation method, it shows that the empirical likelihood method provides more accurate inference than the normal approximation method. A real data example is used for illustration.  相似文献   
62.
随着全球化的发展,国际非政府组织的影响力越来越大,但对于其在国际法上的地位问题还存在着争议.本文通过对国际非政府组织的定义、发展历程和兴起原因、国际法上的地位三个方面进行分析,认为国际非政府组织在一定范围和条件是可以成为国际法主体的,应给予这些国际非政府组织国际法中的地位.  相似文献   
63.
一直以来人们都认为《墙头马上》为一部爱情喜剧,通过对此剧中的悲剧性因素悲剧性行动和悲剧性环境的分析,认为此剧并不是仅仅停留在爱情喜剧的层面,而是一部具有社会性婚姻问题的戏剧.  相似文献   
64.
扩大中间阶层是构建和谐社会的必要条件   总被引:1,自引:0,他引:1  
中间阶层实质上是一个经济地位、政治地位和社会地位等各方面介于上层精英阶层和下层大众阶层之间的、具有中等社会经济地位的阶层和群体的集合.扩大中间阶层是构建和谐社会的必要条件.通过运用财政税收政策,大力发展教育和科技,鼓励创业,建立顺畅的社会流动机制等方式壮大我国的中间阶层对促进构建社会主义和谐社会有重要的作用.  相似文献   
65.
In this study, we examined the dynamics of the perception of “dislike” ties (reputational dislike) among adolescents within the contexts of friendship, perceived popularity, substance use, and Facebook use. Survey data were collected from a longitudinal sample of 238 adolescents from the 11th and 12th grades in one California high school. We estimated stochastic actor-based network dynamic models, using reports of reputational dislike, friendships, and perceived popularity, to identify factors associated with the maintenance and generation reputational dislike ties. The results showed that high-status adolescents and more frequent Facebook users tended to become perceived as or stay disliked by their peers over time. There was a tendency for friendships to promote the creation and maintenance of reputational disliking but not vice versa. Adolescents tended to perceive others as disliked when their friends also perceived them as disliked. There was no evidence that either cigarette smoking or drinking alcohol affected reputational dislike dynamics. This study highlights the important role that the hierarchical peer system, online peer context, and friendships play in driving information diffusion of negative peer relations among adolescents.  相似文献   
66.
Although the association of being married and a lower mortality rate has been well established, most previous research on marital status and mortality did not consider potential change in this relationship over time. In this study, I adopted a survey cohort perspective to examine both overall and cause‐specific mortality trends by marital status from 1986 to 2000 in the United States. On the basis of data from the National Health Interview Survey‐Longitudinal Mortality Follow‐up (N = 517,314), I found that mortality generally decreased or remained stable for the married from the 1986 to 2000 NHIS cohort, except for diabetes deaths. There is evidence showing divergent mortality trends between the married and unmarried, especially the widowed. Race and gender variations are examined.  相似文献   
67.
日军侵占海南岛后,在短时间内建立起了从幼儿园、小学、中学到农业学校、师范学校的比较完整的日语教育体系。由于起步晚,持续时间短等原因,海南日语教育尚未达到规范化程度,各校间的教育情况差别较大,具有较强的随意性。然而无论在哪一级学校,日语教育都处于绝对核心地位。日语教育的目的在于摧毁岛民的反抗力,抹杀岛民的民族性,为永久占领海南岛奠定文化基础。  相似文献   
68.
No abstract available for this article.  相似文献   
69.
随着社会主义市场经济体制的确立,商业经济理论也进入新的发展时期,在阐述和介绍商业流通理论、商业流通地位理论的基础上,本文就如何强化商业流通地位提出四点认识。  相似文献   
70.
Although low participation rates have historically been considered problematic in peer nomination research, some researchers have recently argued that small proportions of participants can, in fact, provide adequate sociometric data. The current study used a classical measurement perspective to investigate the internal reliability (Cronbach's α) of peer nomination measures of acceptance, popularity, friendship, prosocial behavior, and overt aggression. Data from 642 participants attending 10 schools were resampled at different participation rates ranging from 5 percent to 100 percent of the original samples. Results indicated that (1) the association between participation rate and Cronbach's α was curvilinear across schools and variables; (2) collecting more data for a given variable (by using unlimited vs. limited nominations, or two vs. one items) was significantly related to higher internal reliability; and (3) certain variables (overt aggression, popularity) were more reliable than others (acceptance, friendship). Implications for future research were discussed.  相似文献   
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