MBO后我国上市公司治理绩效四效应的实证研究

本文提出了我国上市公司实施MBO后影响公司治理绩效的四个效应假设:(1)金字塔型股权结构下管理层的现金流权和控制权的两权分离效应;(2)上市公司增加现金股利分配效应;(3)管理层的挖壕自守效应;(4)管理层的掘隧输送利益效应。通过对样本公司的实证数据检验,本文肯定了两权分离效应、挖壕自守效应、掘隧输送利益效应的存在,否定了增加现金股利分配效应的存在。     

浅谈我国婚姻法探望权的执行

在我国司法界中探望权的执行存在着一定的难度。由于探望权执行表现为一种需要长期反复的行为,其执行的对象又是特定的相对人,并且需要多方配合才能实现,这就增加了执行的难度。要完善这一立法,应从其性质入手,深入分析在执行中遇到的问题及相应的解决方法,并借鉴他国经验,从而完善我国探望权的执行。     

《邯郸记》的世俗内容与文人体验

汤显祖在其《邯郸记》中，通过卢生的梦境来渲染世俗生活的表层与本质，揭示了凡人对婚姻、功名、子女、生命的真诚追求与贪婪本性及其最终幻灭的结局；通过黄粱梦的人生感叹，突出了文人在政治生涯中的尴尬境遇，在虚幻欲望和真实生活中的两难境地，表现出了作家对一个时代的思考和体悟。而晚明世风的享乐主义趣味是卢生贪欲的背景，其政治现状则是黄粱梦的内在原因。     

A Nonparametric Test Procedure Based on Quantiles for the Right Censored Data

In this study, we propose nonparametric tests using the several quantile statistics simultaneously for the right censored data. First of all, we consider statistics of the quadratic form with estimated covariance matrices. Then we derive the limiting distribution using the large sample approximation theory. Also we consider different forms of statistics such as the maximal and summing types with their limiting distributions. Then we illustrate our procedure with examples and compare performance among tests with empirical powers through a simulation study. Also we comment briefly on some interesting features including re-sampling methods as concluding remarks. Finally in Appendices, we provide proofs for the theoretic results needed for the derivation of the limiting distributions of the proposed test statistics.     

Edge Estimation in the Population of a Binary Tree Using Node-Sampling

Suppose a finite population of several vertices, each connected to single or multiple edges. This constitutes a structure of graphical population of vertices and edges. As a special case, the graphical population like a binary tree having only two child vertices associated to parent vertex is taken into consideration. The entire binary tree is divided into two sub-graphs such as a group of left-nodes and a group of right-nodes. This paper takes into account a mixture of graph structured and population sampling theory together and presents a methodology for mean-edge-length estimation of left sub-graph using right edge sub-graph as an auxiliary source of information. A node-sampling procedure is developed for this purpose and a class of estimators is proposed containing several good estimators. Mathematical conditions for minimum bias and optimum mean squared error of the class are derived and theoretical results are numerically supported with a test of 99% confidence intervals. It is shown that suggested class has a sub-class of optimum estimators, and sample-based estimates are closer to the true value of the population parameter.     

韩氏源流辨析

韩氏著姓,源远流长。在关于韩愈世系的研究中,韩氏的源流问题也成为其重要内容。韩氏源流的探讨自韩氏始祖韩万开始到汉弓高侯颓当结束。本文利用文献记载来考证韩氏的源流。韩氏的源流大致应以修武《韩文公门谱》所记载的为准。     

东魏北齐左右卫府制度考论

左、右卫府为东魏北齐禁卫武官制度的主体,是领军府下辖两大禁卫军府之一,设左、右卫将军各一人“掌左、右厢”,各有武卫将军二人为其副。     

Estimation Bias in Complete-Case Analysis in Crossover Studies with Missing Data

Crossover designs are used often in clinical trials. It is not uncommon that subjects discontinue before completing all treatment periods in a crossover study. Despite availability of statistical methodologies utilizing all available data and software for obtaining valid inferences under the assumption of missing at random (MAR), naïve approaches, such as the complete case (CC) analysis, which is only valid with a strong assumption of missing completely at random are still widely used in practice. In this article, we obtain the analytical form of the estimation bias of treatment effects with CC for linear mixed models. We use simulation studies to examine the inflation of Type I error and efficiency loss in the inferences with CC under MAR. Invalidity and inefficiency of two other commonly used approaches for defining analyzed data in the presence of missing data, including data from at least two periods in three period crossover and available cases for a specific comparison of interest, are also demonstrated through simulation studies.     

从失语的物体到讲述的主体——论莫里森小说中黑人女性话语权的获得

法国哲学家福柯的权力—话语理论为我们研究莫里森作品提供了一个新的视角。《最蓝的眼睛》《宠儿》《爱》中莫里森所采用的叙述视角与叙述话语以及其中的人物话语,为黑人女性争取了话语权力,使她们由失语的物体一跃成为讲述的主体。话语权是黑人女性确立其主体地位的有力武器。     

Inference for a Linear Functional of Cumulative Hazard Function Via Empirical Likelihood

This article discusses sampling plans, that is, the allocation of sampling units, for computing tolerance limits in a balanced one--way random-effects model. The expected width of the tolerance interval is derived and used as the basis for comparing different sampling plans. A well-known cost function and examples are used to facilitate the discussion.