Generalized partially linear varying-coefficient models

Generalized varying-coefficient models are useful extensions of generalized linear models. They arise naturally when investigating how regression coefficients change over different groups characterized by certain covariates such as age. In this paper, we extend these models to generalized partially linear varying-coefficient models, in which some coefficients are constants and the others are functions of certain covariates. Procedures for estimating the linear and non-parametric parts are developed and their associated statistical properties are studied. The methods proposed are illustrated using some simulations and real data analysis.     

从尤瑟夫·海勒的“黑色幽默”文学透析美国社会

海勒的《第二十二条军规》运用讽刺暴露等手法，无情地揭露和鞭挞了战争的荒谬和不道德以及美国社会的黑暗和罪恶。     

20世纪脂砚斋研究综述

脂砚斋、畸笏叟等评点家是曹雪芹的有关亲人,他们非常熟悉曹雪芹的生活和《红楼梦》的原始素材及创作过程。因此,研究脂砚斋已成为《红楼梦》研究的一个重要组成部分。20世纪学术界对脂砚斋、畸笏叟是谁,他们究竟是一个人还是两个人,以及他们的政治思想、现实主义文学观、典型观、技法论及其他相关问题作了多方面的研究,取得不少成绩,井成为新世纪研究《红楼梦》的基础之一。总结上个世纪的脂砚斋研究,会对新世纪的《红楼梦》研究提供借鉴。     

Estimating ordered parameters by linear programming

There are many models that require the estimation of a set of ordered parameters. For example, multivariate analysis of variance often is formulated as testing for the equality of the parameters versus an ordered alternative. This problem, referred to as isotonic inference, constrained inference, or isotonic regression, has led to the development of general solutions, not often easy to apply in special models. In this expository paper, we study the special case of a separable convex quadratic programming problem for which the optimality conditions lead to a readily solved linear complementarity problem in the Lagrange multipliers, and subsequently to an equivalent linear programming problem, whose solution can be used to recover the solution of the original isotonic problem. The method can be applied to estimating ordered correlations, ordered binomial probabilities, ordered Poisson parameters, ordered exponential scale parameters, or ordered risk differences.     

Estimating the distribution function using k-tuple ranked set samples

The basic assumption underlying the concept of ranked set sampling is that actual measurement of units is expensive, whereas ranking is cheap. This may not be true in reality in certain cases where ranking may be moderately expensive. In such situations, based on total cost considerations, k-tuple ranked set sampling is known to be a viable alternative, where one selects k units (instead of one) from each ranked set. In this article, we consider estimation of the distribution function based on k-tuple ranked set samples when the cost of selecting and ranking units is not ignorable. We investigate estimation both in the balanced and unbalanced data case. Properties of the estimation procedure in the presence of ranking error are also investigated. Results of simulation studies as well as an application to a real data set are presented to illustrate some of the theoretical findings.     

Nonparametric estimation of the conditional distribution function in a semiparametric censorship model

In this paper we propose a new nonparametric estimator of the conditional distribution function under a semiparametric censorship model. We establish an asymptotic representation of the estimator as a sum of iid random variables, balanced by some kernel weights. This representation is used for obtaining large sample results such as the rate of uniform convergence of the estimator, or its limit distributional law. We prove that the new estimator outperforms the conditional Kaplan–Meier estimator for censored data, in the sense that it exhibits lower asymptotic variance. Illustration through real data analysis is provided.     

学习贯彻十六大精神,推进“两课”教育教学的创新

学习贯彻十六大精神,推进“两课”教育教学的创新@赵书爱$华北水利水电学院人文社科部!河南郑州450011     

金初耆旧作家与庾信之比较

同为出仕北方少数民族政权的汉族作家,由南朝入北朝的庾信和由宋入金的耆旧作家的作品却有很大的不同。金初耆旧作家缺乏庾信作品中的王室情,其各自的具体处境和历史环境是其主要原因。     

20世纪中国的三场伟大革命与中国现代化

辛亥革命、新民主主义革命和新和平革命是20世纪中国的三场伟大革命。三场革命在不同程度上推动了中国现代化的进程:辛亥革命开启了现代化潮流的历史闸门,新民主主义革命奠定了现代化的基本前提,新和平革命实现了现代化进程中质的飞跃。     

清初治滇述论

清朝初年,特别是平定“三藩之乱”后的二三十年间,是云南实现由乱到治的关键时期。清朝统治者在总结和借鉴历代治滇思想和治策的基础上,经过不断调整、充实,逐步形成了一套相对完整的治滇治策体系,其治策涉及云南的政治、经济、文化等领域,较为切合当时社会发展的实际,成为其后清朝统治云南的治边思想和治策。