汉初刘邦分封异姓王原因新探

汉初刘邦分封异姓王不能只归结为刘邦的"不得已而为之",因为任何一个历史事实的出现,必定有其时代的需要,所以应看到当时的文化、政治、经济和军事发展的推动作用。且从刘邦本人及其集团对他的影响来看,刘邦潜意识中也有分封异姓王的想法。     

采用一元辅助信息的多元二相抽样的比估计

一元抽样调查的理论已经发展相对成熟．但实际问题中往往涉及多个指标,一元理论不能满足需要．本文研究了多元二相抽样,并且在多元二相抽样中添加了一元辅助信息。定义了采用一元辅助信息的多元比估计,得到了采用一元辅助信息的多元二相抽样的比估汁量及其性质．并且证明了在满足一定条件时．采用一元辅助信息的多元二相抽样的比估计量优于多元简单随机抽样的简单估计量．     

以“自述”之名：一个实验民族志写作个案——刘尧汉与《我在神鬼之间——一个彝族祭司的自述》的叙事建构

文章试图揭示在“自述”之名背后,彝族民族学家刘尧汉对彝族毕摩吉克则伙自传的叙事策略和文本建构进行了一系列调整把控,从而将其纳入一种特殊的实验民族志写作实践当中。由此,刘尧汉重申了近代以来彝族知识分子反复表达的民族自觉意识,进而在新的时代和学科语境下彰显出中国少数民族知识分子构建学术流派、争取学术话语的高度学术自觉。     

“六书”理论研究探析

为了研究汉字的产生、发展和基本特点,通过对“六书”理论及其发展过程的分析与评介,明确“六书”理论,特别是许慎的《说文解字》,在汉字发展和应用中的作用、历史价值和现实意义。当代“六书”理论的研究。对汉字形体学体系的建构具有重要启迪意义,“六书”理论具有普遍适应性和强大的生命力。     

刘师培的文学史观

由晚清走入近代的刘师培,基于精专的经史学识,在西学东渐的影响下,以传统文论和西方进化论为理论基础,以纯文学的观念考察了文学史,认为文学是一个不断发展的动态过程;留心文学史的变迁,并剖析了变迁的缘由;运用＂穷源＂和＂竟流＂的方法,探索了中国文学发展的规律,对中国文学史作了具有开拓意义的研究。这些研究建构了刘师培较为系统的文学史观,也体现出区别于旧学的时代特色。     

Multiple change-point estimation with U-statistics

We consider a multiple change-point problem: a finite sequence of independent random variables consists of segments given by a known number of the so-called change-points such that the underlying distribution differs from segment to segment. The task is to estimate these change-points under no further assumptions on the within-segment distributions. In this completely nonparametric framework the proposed estimator is defined as the maximizing point of weighted multivariate U-statistic processes. Under mild moment conditions we prove almost sure convergence and the rate of convergence.     

Estimation of parameters in heavy-tailed distribution when its second order tail parameter is known

Estimating parameters in heavy-tailed distribution plays a central role in extreme value theory. It is well known that classical estimators based on the first order asymptotics such as the Hill, rank-based and QQ estimators are seriously biased under finer second order regular variation framework. To reduce the bias, many authors proposed the so-called second order reduced bias estimators for both first and second order tail parameters. In this work, estimation of parameters in heavy-tailed distributions are studied under the second order regular variation framework when the second order parameter in the distribution tail is known. This is motivated in large part by a recent work by the authors showing that the second order tail parameter is known for a large class of popular random difference equations (for example, ARCH models). The focus is on least squares estimators that generalize rank-based and QQ estimators. Though other possible estimators are also briefly discussed, the least squares estimators are most simple to use and perform best for finite samples in Monte Carlo simulations.     

Proper Bayes minimax estimators of the normal mean matrix with common unknown variances

This paper addresses the problem of estimating a matrix of the normal means, where the variances are unknown but common. The approach to this problem is provided by a hierarchical Bayes modeling for which the first stage prior for the means is matrix-variate normal distribution with mean zero matrix and a covariance structure and the second stage prior for the covariance is similar to Jeffreys’ rule. The resulting hierarchical Bayes estimators relative to the quadratic loss function belong to a class of matricial shrinkage estimators. Certain conditions are obtained for admissibility and minimaxity of the hierarchical Bayes estimators.     

Re-parameterization of multinomial distributions and diversity indices

It is shown in this paper that the parameters of a multinomial distribution may be re-parameterized as a set of generalized Simpson's diversity indices. There are two important elements in the generalization: (1) Simpson's diversity index is extended to populations with infinite species; (2) weighting schemes are incorporated. A class of unbiased estimators for the generalized Simpson's biodiversity indices is proposed. Asymptotic normality is established for the estimators. Both the unbiasedness and the asymptotic normality of the estimators hold for all three cases of the number of species in the population: infinite, finite and known, and finite but unknown. In the case of a population with a finite number of species, known or unknown, it is also established that the proposed estimators are uniformly minimum variance unbiased and are asymptotically efficient.     

打造省会个性色彩?? 构建城市品牌形象-- 河北省社科成果一等奖获得者刘瑞杰教授访谈

城市色彩是构建城市形象的重要环节,个性化色彩可以打造城市名片,增强综合竞争力。按照中共河北省委＂一年一大步、三年大变样＂的战略部署,石家庄市正在推进历史上规模空前的城市形象改造工程,其中色彩的定位及落实是构建城市形象的重要环节。石家庄铁道大学刘瑞杰教授的《打造省会个性色彩构建城市品牌形象——石家庄城市色彩规划研究》的研究报告得到政府部门和社会的充分肯定,并荣获河北省社会科学优秀成果一等奖。在2010年12月9日上午的颁奖之际,我们与刘瑞杰教授就＂打造省会个性色彩构建城市品牌形象＂方面进行访谈,整理成文,以飨读者。