AN EXACT CONDITIONAL TEST FOR COVARIANCE SELECTION MODELS

An exact conditional test is developed for testing the absence of an edge in a graphical covariance selection model and is shown to be equivalent to a test based on the partial correlation coefficient. An example is given.     

UMPU tests based on sequential order statistics

Sequential order statistics with conditional proportional hazard rates form a regular exponential family in the model parameters. This finding is used to establish uniformly most powerful unbiased (UMPU) tests for a variety of hypotheses.     

Construction and selection of tightened–normal–tightened variables sampling scheme of type TNTVSS (n 1, n 2; k)

This paper provides tables for the construction and selection of tightened–normal–tightened variables sampling scheme of type TNTVSS (n ₁, n ₂; k). The method of designing the scheme indexed by (AQL, α) and (LQL, β) is indicated. The TNTVSS (n _T , n _N; k) is compared with conventional single sampling plans for variables and with TNT (n ₁, n ₂; c) scheme for attributes, and it is shown that the TNTVSS is more efficient.     

Four tests of fit for the beta-binomial distribution

Tests based on the Anderson–Darling statistic, a third moment statistic and the classical Pearson–Fisher X ² statistic, along with its third-order component, are considered. A small critical value and power study are given. Some examples illustrate important applications.     

On disjoint (3t, 3, 1) cyclic difference families

We give a new and easier proof of the existence of a disjoint (3t  , 3, 1) cyclic difference family for every t>3$t>3$, first proved by Dinitz and Shalaby (2002). Our purely theoretical construction is still elementary but simpler and does not need to be checked by computer.     

中国原创图画书:理想与道路

近年来,图画书市场快速增长,因不满足于引进版图画书一统天下的状况,出版界大力推动原创图画书的创作与出版,一时呈现原创图画书大部头、大系列纷纷登场的可喜景象。但是,原创图画书的市场反响并不热烈。在选材、创作视角、文字与绘画语言诸方面,原创图画书还有很长的路要走。     

从《鄂豫边区民运工作史》看党的群众工作

《鄂豫边区民运工作史》反映出的中国共产党群众路线的组织形式、工作方法、实现路径等,体现了群众路线的具体性,对当今中国特色的社会主义建设事业有着重要的启迪和借鉴作用。     

翻译家刘炳善对翻译风格的思考

原作风格在译作中的传达和体现是文学翻译的核心问题。翻译家刘炳善对翻译风格问题的思考直接指导其翻译实践,对其翻译思想的梳理将给其他文学翻译工作者带来多种启发:翻译前对文学风格问题必须有清晰的认识和把握,这是译者应具备的理论基础;主观上做出努力,并创造客观条件,与原作者成为穿越时空的知音才能探知原作精髓,这是译作成功的前提条件;对原作者风格最大程度的再现和译者风格的呈现是可以统一的,也是必须统一的,这是译作作为译语中成熟的独立作品的标志。     

1920年烟潍路工赈述论

我国北方五省1920年发生特大旱灾。灾情发生后,国内外救济机构和团体对救灾表现出了极大的热情,投入了大量的财力和物力实施救济。在有关方面的建议下,北京政府交通部利用所辖的路、电、邮、航四政附收赈款筹集资金,采用以工代赈方式修筑烟台至潍县公路。可工程开工后不久,由于交通部把持赈款,引发社会不满,遭到舆论抨击,不得不将所收的一半赈款用来办理急赈,这对工赈产生了直接的影响。烟潍路工赈在取得成绩时,也存在工程离灾区过远、赈济人数太少、拖欠工资和地价、管理不够完善等诸多问题。     

西北民族地区不同民族家庭教育投资行为比较研究——基于Logistic分析的投资行为影响因素研究

教育投资具有显著的外溢效应,是一项于国、于家、于己都有利的经济行为。项目组通过对宁夏回族自治区灵武市400户农户的问卷调查,以经济理论为基本框架,从家庭教育投资主体出发,探讨影响少数民族地区农户家庭投资决策的因素,并且验证家庭教育投资与各因素之间的关系,极力把握其发展变化规律,并结合实情,提出具有可行性和针对性的若干建议,为解除农村家庭教育投资困境、增加教育供给、教育投资制度创新提供理论依据及现实基础。