Lower bounds on expectations of positive L-statistics from without-replacement models

We consider samples drawn without replacement from finite populations. We establish optimal lower non-negative and upper non-positive bounds on the expectations of linear combinations of order statistics centered about the population mean in units generated by the population central absolute moments of various orders. We also specify the general results for important examples of sample extremes, Gini mean differences and sample range. The paper completes the results of Papadatos and Rychlik [2004. Bounds on expectations of L-statistics from without replacement samples. J. Statist. Plann. Inference 124, 317–336], where sharp negative lower and positive upper bounds on the expectations of the combinations were presented for the without-replacement samples.     

论居民住房买卖所有权的取得

购买是我国城镇居民解决生活住房的主要手段,在买卖过程中,如何取得房屋的所有权至关重要也易生纠纷。房屋所有权登记的公信力以推定正确的效力重在保护善意交易人;在不存在善意第三人的条件下,真实所有人可以通过异议登记、更正登记取消房产证上登记房主的所有权,这在买卖共有房屋以及分期付款买房的交易中尤为重要。     

中国教育事业发展的实证分析

随着我国经济的快速发展，国力的迅速提升，我国的教育事业也取得了前所未有的进步，为了从量上衡量教育所取得的成就，以及对全民族化素质提高的影响，构建了两个指标：人均受教育年限、教育基尼系数，利用第四次、第五次人口普查的数据，进行了计算，从结果中可以看出，我国各地区的教育事业成就惊人，但是，发展并不平衡。同时，提出了两个令人惊讶的，值得深入研究的教育的“平均之谜”。     

近百年来中国对文物建筑与历史地段的保护

论文以1949年为界,分两大部分叙述了迄今为止大约100年来中国对文物建筑与历史地段的保护。总结出1949年后中国近代文物建筑保护思想观念的演变特征,即前期以具有社会主义特色的保护观念为主,80年代以来发展为逐渐与国际接轨。     

高校毕业生思想教育难度加大探源与对策

目前高校毕业生思想教育难度加大的原因在于:大学生就业制度改革中凭关系择业与凭能力自主择业冲突的影响;就业形势趋于严竣的影响;高校学生思想教育与市场环境的脱节;毕业生自身的思想混乱与矛盾心理。我们必须优化高校育人的内外部环境;开展丰富多彩的校园文化活动并营造离校前夕的健康氛围;积极进行就业指导服务;开展形势教育与心理健康教育;以控制并化解高校毕业生思想教育的难度。     

女性妆饰与民国初年的女性解放

妆饰是精神的外化。伴随着民初女性解放运动的发展,传统的女性妆饰向着西装化与时装化、多元化与个性化的方向发展。并且出现了实用性与审美性的结合、地域与层次的不同等变化。     

建国50多年来中国外交的基本特征论析

建国50多年来,中国共产党三代领导集体在中国外交政策和策略等方面,表现了相当的一致性。在这些方面,后一代领导集体与前一代领导集体之间有着承继关系。当然,后一代领导集体也有新的重大的发展。其实,这种一致性衬托了当代中国外交的基本特征,或者说,形成了当代中国外交的传统。文章基于对50多年来中国外交的分析,归纳出中国外交的四个基本特征,这就是外交原则和政策的一贯性、外交目标的双重性、外交形式的多样性以及外交对象的层次性。     

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.     

A graphical summary of disparities in health care and related summary measures

In order to assess the effectiveness of government programs designed to reduce disparities in the health care minority groups receive relative to the majority white population, a proper statistical measure should be used. This article proposes a measure of and its accompanying graph, which is readily interpretable and is not affected by the number of minority subgroups examined.     

A simulation study of a discrete-time multiserver retrial queue with finite population

In this paper, we deal with a discrete-time multiserver retrial queue with finite population. Firstly, we study the Markov chain at the epochs immediately after slot boundaries making emphasis on the computation of its steady-state distribution. Then, the main performance measures are investigated. Besides, we simulate the waiting time of a customer in the retrial group under three different queueing policies. Some numerical examples are given to illustrate the analysis.