当代中国政治经济学发展思路探析

从20世纪90年代初至今,我国学界对中国政治经济学的发展思路一直存在着激烈的争论:是无限西化还是有限西化.实际上,在探究中国政治经济学的发展思路时,我们应该首先考虑中国政治经济学的主体性和国度性.在阶级和国家尚还存在的人类社会发展阶段,研究主体的阶级立场规定了政治经济学的主体性,研究对象的国别特殊性又规定了政治经济学的国度性.当代中国政治经济学的主体性在于其研究主体应该代表中国劳动者的利益,中国政治经济学的国度性在于其研究对象应该是中国的经济矛盾,这就决定了中国政治经济学发展的思路,既不能是无限西化,也不能是有限西化,而应该是内生外化,即立足中国国情,从中国劳动者的立场、利益和意识来揭示与论证中国特殊的经济矛盾.     

新课程标准下的音乐教师从教能力结构探析

本文以新的课程标准为基础,并以全新的理念、全新的思维、全新的方式对音乐教师的从教能力进行全新的解读。     

ST公布和ST撤销事件的市场反应研究——来自沪深股市的实证检验

一、引言ST,是英文“Special Treatment”的缩写,中文意思是“特别处理”。ST特别处理,是为了完善退市机制,提高市场透明度并向投资者充分揭示风险,而从1998年起,在中国股市实施的一项特别的制度,这在其他国家的金融市场上是没有的。公司股票被特别处理,俗称“ST戴帽”,被撤销特别处理,俗称“ST摘帽”。根据有效市场学说,市场有效有三种形式:弱式有效、半强式有效和强式有效,它们分别对应历史信息、公告信息和私人信息这三类不同的信息集。ST戴帽和摘帽消息就属于其中的公告信息类。因此,通过对ST公布和ST撤销事件的市场反应进行观察…     

冲突、合作与和谐社会——2005年诺贝尔经济学奖得主的学术思想及其启示

因其对于冲突与合作的研究,①罗伯特·奥曼和托马斯·谢林获得了2005年诺贝尔经济学奖。博弈论的研究再次获得诺贝尔经济学奖的认可,是因为它创造了一种全新的思考方式,近年来,博弈论成为广为接受的研究工具。奥曼和谢林对于博弈论的理论拓展和实际运用,增强了世人对冲突与合作的理解,并且,这一研究超越了经济范畴,影响了社会科学多个领域。②他们对于冲突与合作的研究体现了博弈论在互动中寻求均衡的核心理念,其研究成果有助于解决当前我国社会经济转型过程中凸现的问题,对于缓解冲突、引导合作,推动和谐社会③进程有着重要启示。一、奥曼…     

Reducing component estimation for varying coefficient models

The estimation problem for varying coefficient models has been studied by many authors. We consider the problem in the case that the unknown functions admit different degrees of smoothness. In this paper we propose a reducing component local polynomial method to estimate the unknown functions. It is shown that all of our estimators achieve the optimal convergence rates. The asymptotic distributions of our estimators are also derived. The established asymptotic results and the simulation results show that our estimators outperform the the existing two-step estimators when the coefficient functions admit different degrees of smoothness. We also develop methods to speed up the estimation of the model and the selection of the bandwidths.     

On the type-B integral equation and the distribution of wilks statist for testing independence of several groups of variables

In this paper, WILKS'type-B integral equation is solved in the general form of a series of beta functions and a series of weighted gamma functions as proposed by WALD and BROOKNER 1941. The coefficients in both representations can be obtained by explicit recurrence relartions, therefore the results solve many distributional problems and have the fewest computational difficulties of any representation that has surfaced to date. The radius of convergence of the second series representation is given, whereas the convergence property of the first series representation is given, whereas the convergence property of the first series representation was studied by WALD and Brookner. The exact null distributions of WILKS' statistic A for testing the independence of several groups of variables and of V = -log A are given. The coefficients in all the series representration can be computed recursilvely and hence can be obtained easily with the help of modern computatinal facilities     

Extension of the pool-adjacent-violators algorithm

The pool-adjacent-violators algorithm (PAVA) is an efficient algorithm which converges in a finite number of steps. However, it has been applicable so far only in isotonic regression with the simple order. This report extends its applicability to other quadratic programming problems, including certain one-sided multivariate testing problems and concave regression problems.     

IMPROVING POPULATION-SPECIFIC ALLELE FREQUENCY ESTIMATES BY ADAPTING SUPPLEMENTAL DATA: AN EMPIRICAL BAYES APPROACH

Estimation of the allele frequency at genetic markers is a key ingredient in biological and biomedical research, such as studies of human genetic variation or of the genetic etiology of heritable traits. As genetic data becomes increasingly available, investigators face a dilemma: when should data from other studies and population subgroups be pooled with the primary data? Pooling additional samples will generally reduce the variance of the frequency estimates; however, used inappropriately, pooled estimates can be severely biased due to population stratification. Because of this potential bias, most investigators avoid pooling, even for samples with the same ethnic background and residing on the same continent. Here, we propose an empirical Bayes approach for estimating allele frequencies of single nucleotide polymorphisms. This procedure adaptively incorporates genotypes from related samples, so that more similar samples have a greater influence on the estimates. In every example we have considered, our estimator achieves a mean squared error (MSE) that is smaller than either pooling or not, and sometimes substantially improves over both extremes. The bias introduced is small, as is shown by a simulation study that is carefully matched to a real data example. Our method is particularly useful when small groups of individuals are genotyped at a large number of markers, a situation we are likely to encounter in a genome-wide association study.     

组织信息资源管理论纲

本文在简要分析现代组织管理环境基本特点的基础上,对社会组织的信息资源管理的功能、原则及其运作等若干问题进行了认真的探讨,以期进一步完善现代组织管理理论。