Use of prior information for estimating the variance components

The MINQUE and its modifications are considered for estimating the variances of the balanced one-way random effects model. The effects of the a priori values on the estimators of the variances are examined in detail. The Mean Square Errors of the estimators are compared for variations in the prior values of the unknown variances.     

论教师理想人格的价值

教师理想人格对自我个体的价值在于:恒定道德准则,保持行为一贯;赢得外部人和,促进事业成功;通达世态炎凉,升华人生境界。对校园群体的价值在于:沟通学生情感,强化教育效果;诠释客观真理,提供行为榜样;消解负面影响,净化育人环境。对社会整体的价值在于:倡导先进文化。灌输人文精神;提供智力支持,推动社会发展;播撒正义火种,影响社会公众。     

论绿色消费方式的形成

绿色消费是可持续发展的消费方式,它的形成对人类可持续发展具有重要意义。论文主张从建立可持续发展的消费价值观,建立合理的财富分配秩序,调整经济结构和生产方式,并依靠科技进步和发挥政府的主导作用来促进绿色消费的形成。     

On the performance of L2E estimation in modelling heterogeneous count responses with extreme values

In healthcare studies, count data sets measured with covariates often exhibit heterogeneity and contain extreme values. To analyse such count data sets, we use a finite mixture of regression model framework and investigate a robust estimation approach, called the L₂E [D.W. Scott, On fitting and adapting of density estimates, Comput. Sci. Stat. 30 (1998), pp. 124–133], to estimate the parameters. The L₂E is based on an integrated L₂ distance between parametric conditional and true conditional mass functions. In addition to studying the theoretical properties of the L₂E estimator, we compare the performance of L₂E with the maximum likelihood (ML) estimator and a minimum Hellinger distance (MHD) estimator via Monte Carlo simulations for correctly specified and gross-error contaminated mixture of Poisson regression models. These show that the L₂E is a viable robust alternative to the ML and MHD estimators. More importantly, we use the L₂E to perform a comprehensive analysis of a Western Australia hospital inpatient obstetrical length of stay (LOS) (in days) data that contains extreme values. It is shown that the L₂E provides a two-component Poisson mixture regression fit to the LOS data which is better than those based on the ML and MHD estimators. The L₂E fit identifies admission type as a significant covariate that profiles the predominant subpopulation of normal-stayers as planned patients and the small subpopulation of long-stayers as emergency patients.     

A flexible approach for multivariate mixed-effects models with non-ignorable missing values

We propose a flexible model approach for the distribution of random effects when both response variables and covariates have non-ignorable missing values in a longitudinal study. A Bayesian approach is developed with a choice of nonparametric prior for the distribution of random effects. We apply the proposed method to a real data example from a national long-term survey by Statistics Canada. We also design simulation studies to further check the performance of the proposed approach. The result of simulation studies indicates that the proposed approach outperforms the conventional approach with normality assumption when the heterogeneity in random effects distribution is salient.     

论编辑名利观与出版物质量

编辑应树立正确的名利观.正确的名利观可使出版物质量得到提高,从而为社会提供更多的精品读物,非正确的名利观会使出版物质量下降,甚至会对人类和社会造成犯罪.     

伦理文化与商品价值

现代社会经济文化在经过长期分离之后 ,重新融合 ,伦理文化作为重要的生产要素——文化资本和商品价值的内在组成部分——文化价值 ,成为商品价值生态建构的重要社会资源和增长动力     

中国传统文化与社会主义市场经济

中国传统文化与现代市场经济有不协调、不对称的一面 ,但对社会主义市场经济的发展完善有积极的纠偏矫正作用。从四个方面论述了中国传统文化对社会主义市场经济的正面影响。     

美国对外援助政策及其价值取向

对外援助是战后国际关系的一个重要内容 ,对外援助是国内政治的拓展 ,是一个国家推行其外交政策的工具。当然 ,随着国与国之间在经济、文化方面依赖的不断加强 ,特别是随着非政府组织的介入 ,对外援助在很大程度上也越来越追求更多的人文关怀。美国是世界上开展官方发展援助最早的国家 ,在规模和程度上也非其他国家所能比拟 ,美国推行的对外援助政策集中体现了美国人的价值取向     

左翼文学价值观研究

左翼文学价值观念对20世纪中国文学产生了深远影响,它的萌芽、发展直接导源于近现代中外社会、历史、文化的变迁及其对文学变革提出的要求,这种特殊的精神联系,促成其特有的复杂性和多样性,本文从文学价值观的视角切入,对左翼文学价值观的产生及其复杂性与多样性进行了梳理辨析,并进一步探讨了它对后世的影响。