90后大学生思想道德建设刍议

90后大学生在思想道德方面呈现出独特性：思想观念新锐、张扬、自主、时尚;自我实现意识强,价值取向功利化;危机感强,心理承受能力有限;有较自觉的社会公德意识,能积极弘扬传统美德。这些特征的形成是受社会变革、互联网、家庭教育模式和学校思想政治教育水平等多种因素的影响。加强90后大学生思想道德建设,应以学生为中心,不断创新高校思想道德教育的方法与内容;要发挥家庭教育和社会教育的作用,形成大学生思想道德教育的合力;要加强校园网络文化建设,主动占领网络思想政治教育新阵地。     

Diagnostics of multiple group influential observations for logistic regression models

In this paper, two new multiple influential observation detection methods, GCD.GSPR and mCD*, are introduced for logistic regression. The proposed diagnostic measures are compared with the generalized difference in fits (GDFFITS) and the generalized squared difference in beta (GSDFBETA), which are multiple influential diagnostics. The simulation study is conducted with one, two and five independent variable logistic regression models. The performance of the diagnostic measures is examined for a single contaminated independent variable for each model and in the case where all the independent variables are contaminated with certain contamination rates and intensity. In addition, the performance of the diagnostic measures is compared in terms of the correct identification rate and swamping rate via a frequently referred to data set in the literature.     

On Hotelling’s T2 test in a special paired sample case

In a special paired sample case, Hotelling’s T² test based on the differences of the paired random vectors is the likelihood ratio test for testing the hypothesis that the paired random vectors have the same mean; with respect to a special group of affine linear transformations it is the uniformly most powerful invariant test for the general alternative of a difference in mean. We present an elementary straightforward proof of this result. The likelihood ratio test for testing the hypothesis that the covariance structure is of the assumed special form is derived and discussed. Applications to real data are given.     

Estimation of the smallest scale parameter of two-parameter exponential distributions

Improved point and interval estimation of the smallest scale parameter of n independent populations following two-parameter exponential distributions are studied. The model is formulated in such a way that allows for treating the estimation of the smallest scale parameter as a problem of estimating an unrestricted scale parameter in the presence of a nuisance parameter. The classes of improved point and interval estimators are enriched with Stein-type, Brewster and Zidek-type, Maruyama-type and Strawderman-type improved estimators under both quadratic and entropy losses, whereas using as a criterion the coverage probability, with Stein-type, Brewster and Zidek-type, and Maruyama-type improved intervals. The sampling framework considered incorporates important life-testing schemes such as i.i.d. sampling, type-II censoring, progressive type-II censoring, adaptive progressive type-II censoring, and record values.     

地区收入、食品价格与恩格尔系数

本文以2016年我国31个省级地区截面数据为样本,构建扩展模型考察恩格尔系数与收入、食品价格之间的关系。研究发现,恩格尔系数与地区收入存在显著的负相关性,纳入食品价格后收入对恩格尔系数的影响变得更为显著,二者关系满足恩格尔定律。恩格尔系数和以地区食品价格平价代表的食品价格之间显著正相关,若再考虑其他因素,则食品价格对恩格尔系数的影响会稍有减弱。进一步将食品区分为生活必需型食品与非生活必需型食品,测算得到的基本恩格尔系数、高阶恩格尔系数与收入之间仍呈负相关关系,但与基本恩格尔系数相比,高阶恩格尔系数与收入之间的负相关性更弱。恩格尔系数受生活必需型食品价格的影响强于非生活必需型食品价格的影响,基本恩格尔系数主要受生活必需型食品价格的影响,而高阶恩格尔系数同时受到两类食品价格的影响。     

A comparative study of confidence intervals to assess biosimilarity from analytical data

Assessment of analytical similarity of tier 1 quality attributes is based on a set of hypotheses that tests the mean difference of reference and test products against a margin adjusted for standard deviation of the reference product. Thus, proper assessment of the biosimilarity hypothesis requires statistical tests that account for the uncertainty associated with the estimations of the mean differences and the standard deviation of the reference product. Recently, a linear reformulation of the biosimilarity hypothesis has been proposed, which facilitates development and implementation of statistical tests. These statistical tests account for the uncertainty in the estimation process of all the unknown parameters. In this paper, we survey methods for constructing confidence intervals for testing the linearized reformulation of the biosimilarity hypothesis and also compare the performance of the methods. We discuss test procedures using confidence intervals to make possible comparison among recently developed methods as well as other previously developed methods that have not been applied for demonstrating analytical similarity. A computer simulation study was conducted to compare the performance of the methods based on the ability to maintain the test size and power, as well as computational complexity. We demonstrate the methods using two example applications. At the end, we make recommendations concerning the use of the methods.     

Elementary School-age Children's Attitudes Toward Children in Same-Sex Parent Families

As numbers of families with same-sex parents increase in the United States, children are more likely to encounter diverse family structures. Given that young children can demonstrate in-group bias, prejudicial attitudes, and social exclusion, it is important to understand how children perceive their peers in diverse families. To our knowledge, no studies have assessed elementary-school-age children's attitudes about same-sex parent families. Here, 131 elementary school students (M_age = 7.79 years; 61 girls) viewed images of same-sex (female and male) and other-sex couples with a child and then were asked about their perceptions of these families, particularly the children. Results indicated participants' preferences toward children with other-sex versus same-sex parents. Developmental and practical implications about children's attitudes toward sexual minority parent families are discussed.     

Du machisme au coparentage: pour une révolution des mentalités en Italie

Cet article décrit les processus législatifs et judiciaires complexes nécessaires pour que le droit au coparentage s'impose dans le droit du travail italien. Après avoir expliqué que le système juridique italien a jusqu'à présent assimilé la protection de la famille à la seule protection de la femme et de la maternité, l'auteur décrit l'évolution législative qui a permis de reconnaître aux pères un rôle fondamental dans l'éducation des enfants. Il montre ensuite que la jurisprudence, en retenant une interprétation moderne des principes inscrits dans la loi, contribue à vaincre la résistance à une telle évolution dans une société encore marquée par la domination masculine.     

需求取向社区贫困家庭志愿服务的探索

贫困救助是我国社会服务的永恒主题,城市最低生活保障制度和农村五保制度为解决贫困问题提供了制度保障。但是,贫困是一个复杂的持续性的社会问题,社会保障政策的公共性与弹性要求以及社会的不断变迁,使得贫困救助需求的差异性和变化性难以得到有效满足。社区志愿服务以其贴近居民生活的服务特点,可以有效地填补社会救助政策的漏洞。本文描述了社区贫困家庭的现状及其特点,揭示了当前社区服务和社会政策存在的缝隙;立足社区贫困家庭的需要,提出了社区贫困家庭志愿服务应该提供的主要服务内容,寄望建设一个符合中国社会文化情境和具体家庭需求的社区贫困家庭志愿服务。     

两宋时期的秦观诗研究

秦观是北宋文坛上的重要作家,“苏门四学士”之一,诗、词、文俱佳。秦观诗在宋代享有较高声誉,当时学人对其诗已有较为深入的研究。两宋时期研究为后世秦观诗研究奠定了基础,影响了后代对其诗的定位和评价走向。