Semiparametric Bayesian analysis for longitudinal mixed effects models with non-normal AR(1) errors

Statistics and Computing - This paper studies Bayesian inference on longitudinal mixed effects models with non-normal AR(1) errors. We model the nonparametric zero-mean noise in the autoregression...     

组织学习能力综合评价模型研究

构建了组织学习能力的评价指标体系,并建立了组织学习能力的综合评价模型,使定性问题能够定量化处理。此外,应用实际例子讨论了模型在企业中的应用情况,并对受试企业的组织学习能力状况作了分析,使企业能够客观、正确地认识和评价自身的组织学习能力状况,为其进一步提高组织学习能力提供科学有效的理论依据。     

Empirical likelihood for the difference of quantiles under censorship

In this paper, we use a smoothed empirical likelihood method to investigate the difference of quantiles under censorship. An empirical log-likelihood ratio is derived and its asymptotic distribution is shown to be chi-squared. Approximate confidence regions based on this method are constructed. Simulation studies are used to compare the empirical likelihood and the normal approximation method in terms of its coverage accuracy. It is found that the empirical likelihood method provides a much better performance. The research is supported by NSFC (10231030) and RFDP.     

人口安全的定义、内涵与影响因素

20世纪90年代以来,人口发展的风险问题已经引起越来越多的关注。2003年6月,中国学者和中国政府率先提出了“人口安全”的新概念,并指出要进一步强化全社会的人口安全意识,建立人口安全的警戒线。2003年春天的非典疫情是一次威胁人口安全的重大事件,提醒我们应当增强人口安全意识。人口安全,是事关经济安全、政治安全和国家安全的重大问题。但是如何准确地把握“人口安全”的科学内涵和政策含义还有待深入、系统、全面的研讨。     

试论英语听力的课堂教学

听力在英语学习中非常重要,正确处理好听力课堂教学中,教材与教学内容、听与说、严肃的课堂纪律和轻松学习环境、文化背景与听力理解、听力与记忆力和精听与泛听的关系则是重中之重。因此,应对高职高专英语听力教学提出一些有益和切实可行的教学策略。     

Adjusted empirical likelihood for right censored lifetime data

Adjusted empirical likelihood (AEL) is a method to improve the performance of the empirical likelihood (EL) particularly in the construction of the confidence interval based on completely observed data. In this paper, we extend AEL approach to the analysis of right censored data by adopting an influence function method. The main results include that the adjusted log-likelihood ratio is asymptotically Chi-squared distributed. Simulation results indicate that the proposed AEL-based confidence intervals perform better compared with normality-based or EL-based confidence intervals specifically for small sample size within the right-censoring setting. The proposed method is illustrated by analysis of survival time of patients after operation for spinal tumors.     

对经济学中“资源稀缺性”假设的思考——兼论资源配置问题与政治经济学研究对象的关系

本文针对理论界关于"政治经济学是研究生产关系,西方经济学是研究资源配置"这样一种流行说法展开分析.马克思主义政治经济学以生产关系为对象的意义在于,生产关系是直接决定社会经济的运行、组织、结构的因素,因此,从生产关系分析入手,可以科学地揭示经济活动各个侧面的经济规律.资源配置的一定方式本质上也是由相应的生产关系所决定.本文深入分析了西方经济学以"资源的稀缺性"和"人的欲望无穷"为基本假设,以"效率"为选择依据提出的资源合理配置理论.本文指出了"资源稀缺性"假设中的逻辑含混、错误及虚构性,并指出,只有依据马克思主义的理论,从生产关系分析入手,才能科学地认识当今环境破坏、资源枯竭、生态危机的社会根源.     

对"公平与效率"命题的马克思主义分析

公平与效率之间并非像人们所想像的如同一架天平的两端,呈此消彼长关系,两者更不存在呈反比的函数关系。公平与效率只是社会生产关系运动中表现出的两个方面,它们从内容到形式深深地反映社会生产关系的内涵,“公平与效率此消彼长”的命题不仅在理论上是错误的,而且在实践上也是有害的,它为资本主义生产关系以及某些错误的政策提供了方便的辩护理由。     

A limit theorem on moment convergence of centered spectral statistics of random matrices

ABSTRACT

The eigenvalues of a random matrix are a sequence of specific dependent random variables, the limiting properties of which are one of interesting topics in probability theory. The aim of the article is to extend some probability limiting properties of i.i.d. random variables in the context of the complete moment convergence to the centered spectral statistics of random matrices. Some precise asymptotic results related to the complete convergence of p-order conditional moment of Wigner matrices and sample covariance matrices are obtained. The proofs mainly depend on the central limit theorem and large deviation inequalities of spectral statistics.     

高校知识工作者胜任力要素与个人业绩关系的实证研究

对高校知识工作者胜任力要素与个人业绩的关系进行了实证研究。结果表明,从高校知识工作者胜任力模型中提出的3族36项胜任力要素与个人业绩有紧密的正相关关系。该研究结果通过比较不同的胜任力要素与业绩相关强度的大小,为高校组织和高校知识工作者个人在实践中更加有目的、有步骤地提高胜任力提供了一些启示。