Pitman Closeness of kth Records Based on a Two-Sequence Case

Suppose upper kth records were observed from an X-sequence of iid continuous random variables, and kth upper records from another independent Y-sequence of iid variables from the same distribution are to be observed. The Pitman closeness probabilities of these statistics are derived. For symmetric distribution, the Pitman closeness probabilities of kth record statistics to the population median, are also examined and it is shown that these probabilities are distribution free. Numerical computations are conducted to illustrate the results developed here.     

论手机文化的基本特征

目前,国内学术界并未形成“手机文化”的明确概念与特征界定。按照手机应用特点和文化形态考察可知,手机文化有以下基本特征：（1）手机文化是典型的给大众生产娱乐快感的文化;（2）手机改变了文化的传统特质,形成了互动的、非线性的开放状态;（3）手机拆解了文化的集体性而建立起了文化的私密性;（4）手机是视觉性文化,“一路观看”是手机使用者最喜欢的信息传播和审美方式,视觉化是手机传播中人／机新关系的文化枢纽。     

荣荣诗的四种阅读

四种不同的阅读身份,许多时候并不重合,比如诗歌爱好者的阅读、诗人的阅读、诗歌编辑的阅读,以及诗评角度的阅读,从身份上都可能是独立或相对独立的。在接受美学意义上,不同的阅读身份相对于同一文本,其审美需求其实也不尽相同。那么,有没有一种文本可以被四种不同阅读都认可,就是说有一个类似数学公式里的＂公分母＂,可以被不同的审美需求＂通分＂？如果有,这该是一个什么样的诗歌文本？本文以荣荣的诗为例,试图探讨四种审美的相似和不同之处。     

The structure of global centrality measures

The aim of this article is to identify and analyse the logic and structure of centrality measures applied to social networks. On the basis of the article by Borgatti and Everett, identifying the latent functions of centrality, we first use a survey of personal networks with 450 cases to perform an empirical study of the differences and correspondences between degree, closeness and betweenness centrality in personal networks. Then, we examine the correspondences between the three global indicators in each type of centrality: the maximum value, the mean value and the hierarchy or centralization. The results provide a better understanding of the centrality indicators of networks and the reality that they express in an empirical context.     

科技论文摘要翻译中的“信、达、切”问题研究

介绍了刘仲德教授提出的“信、达、切”的翻译标准,讨论了其对科技论文摘要翻译的适用性,指出了科技论文摘要翻译中存在的“失信”、“欠达”和“不切”等现象,并提出了改进意见     

对封闭状态中少数民族文化的反思

封闭的自然状态 ,使云南聚集了种类众多、文化特征差别很大的 2 5个少数民族 ,直到 5 0多年前 ,在云南社会中还同时存在着原始社会、奴隶社会、封建农奴制和地主经济社会等多种文化 ,其成因不能不说是与封闭的因素密切相关。从文化学的角度上深入分析其理论意义和实践价值 ,对当今的西部大开发会有一定补益的。     

人文视角：新闻写作价值解读

新闻写作是现实生活中最普遍被人关注的一种写作。新闻写作要有价值 ,体现价值的关键在于把握人文视角。人文视角 ,也就是以人为本 ;其价值的解读是 :贴近实际、贴近生活、贴近群众。当今社会 ,人文视角是衡量新闻写作价值的尺度。合格的新闻写作者及媒体 ,必须身体力行 ,别无选择。     

Pitman closeness for hierarchical bayes predictors in mixed linear models

The present article considers the Pitman Closeness (PC) criterion of certain hierarchical Bayes (HB) predictors derived under a normal mixed linear models for known ratios of variance components using a uniform prior for the vector of fixed effects and some proper or improper prior on the error variance. For a generalized Euclidean error, simultaneous HB predictors of several linear combinations of vector of effects are shown to be the Pitman-closest in the frequentist sense in the class of equivariant predictors for location group of transformations. The normality assumption can be relaxed to show that these HB predictors are the Pitman-closest for location-scale group of transformations for a wider family of elliptically symmetric distributions. Also for this family, the HB predictors turn out to be Pitman-closest in the class of all linear unbiased predictors (LUPs). All these results are extended for the HB predictor of finite population mean vector in the context of finite population sampling.     

《写作》课开放性教学探析

应试教学的弊病之一,是长期形成的模式化写作套路,严重阻滞了学生的个性。本文主张打破封闭式教学模式,代之以＂开放性＂的教学路径,要点是：1.走出教室校园,将视野扩展到社会生活的各个方面;2.引导学生学会观察、调查,从生活中汲取丰富的写作资源;3.课堂教学中开展专题性的讨论和交流;4.发挥学生在作文修改评定中的主导作用。只有这样,才能使写作与时代保持同步,才能让学生学会独立观察与思考,写出具有鲜活个性的文章。     

Two-sample Pitman closeness comparison under progressive Type-II censoring

In this paper, we consider two problems concerning two independent progressively Type-II censored samples. We first consider the Pitman closeness (PC) of order statistics from two independent progressively censored samples to a specific population quantile. We then consider the point prediction of a future progressively censored order statistic and discuss the determination of the closest progressively censored order statistic from the current sample according to the simultaneous closeness probabilities. For both these problems, explicit expressions are derived for the pertinent PC probabilities, and then special cases are given as examples. For various censoring schemes, we also present numerical results for the standard uniform, standard exponential, and standard normal distributions. Finally, a distribution-free result for the median is obtained.