Identifying regular blocks in valued networks: A heuristic applied to the St. Marks carbon flow data,and international trade in cereal products

While the concept of regular equivalence is equally applicable to dichotomous as well as valued networks, the identification of regular blocks in regular blockmodels is somewhat problematic when dealing with valued networks. Applying the standard procedure for identifying ties in such blockmodels, a procedure perhaps most suited for dichotomous networks, does tend to generate block images and reduced graphs that differ from intuitive notions of such structures.     

隐喻的语篇性分析

隐喻是人类认知思维的语言表现。隐喻是话语现象。其语篇性表现为衔接与连贯、信息性、目的性等因素。衔接与连贯是语篇的基础；隐喻的信息性蕴涵其目的性，同时受到目的性的影响；目的性实现语篇的真实意图。     

Issues in applying recent CPMP ‘Points to Consider’ and FDA guidance documents with biostatistical implications

The International Conference on Harmonisation guideline ‘Statistical Principles for Clinical Trials’ was adopted by the Committee for Proprietary Medicinal Products (CPMP) in March 1998, and consequently is operational in Europe. Since then more detailed guidance on selected topics has been issued by the CPMP in the form of ‘Points to Consider’ documents. The intent of these was to give guidance particularly to non‐statistical reviewers within regulatory authorities, although of course they also provide a good source of information for pharmaceutical industry statisticians. In addition, the Food and Drug Administration has recently issued a draft guideline on data monitoring committees. In November 2002 a one‐day discussion forum was held in London by Statisticians in the Pharmaceutical Industry (PSI). The aim of the meeting was to discuss how statisticians were responding to some of the issues covered in these new guidelines, and to document consensus views where they existed. The forum was attended by industry, academic and regulatory statisticians. This paper outlines the questions raised, resulting discussions and consensus views reached. It is clear from the guidelines and discussions at the workshop that the statistical analysis strategy must be planned during the design phase of a clinical trial and carefully documented. Once the study is complete the analysis strategy should be thoughtfully executed and the findings reported. Copyright © 2003 John Wiley & Sons, Ltd.     

近年来网络热点问题研究综述

网络问题是近些年学术界关注的热点 ,其研究主要集中在八个方面 :虚拟问题、网络主体、网络文化、网络伦理、网络政治、青少年网络问题、网络教育与学习和网络文明。梳理这些研究成果对我们更好认清网络对社会生活的影响是非常必要的     

浅谈高速公路公司财务预警系统

文章论述了利用财务指标分析法及判别分析法 ,对高速公路公司财务危机进行预测和警报 ,并运用多元判别分析法推导出高速公路行业的财务预警模型     

高等教育私营化问题及其对中国的启示

对高等教育私营化这一国际化趋势进行初步探索,分析高等教育私营化带来的利与弊。结合我国高等教育的现状,探讨如何应对高等教育私营化问题及其对中国的启示。     

网络环境下高校图书馆读者工作的转变与发展策略

论述了网络环境下高校图书馆读者工作在服务方式、读者教育、服务对象、资源提供、与读者的关系以及馆员的知识结构等方面所发生的变化,指出高校图书馆应该通过建好图书馆网站,丰富数字资源,提高读者网络检索技能,优化馆员的知识结构,进而深化读者工作。     

Economic Determinants of Net International Migration in Western Europe

This paper aims to estimate theinfluence of economic determinants on netinternational migration in Western Europe inthe period 1960–1998. Net migration rates(i.e., population growth minus natural increase,divided by the midyear population) constitutethe dependent variable. The economicdeterminants used in this study are GDP percapita, unemployment, and average educationallevel (amount of human capital) of thepopulation. Time series regression models havebeen used in country-specific analyses. Inaddition, a pooled cross-sectional time seriesanalysis has been made. The analyses suggestthat GDP per capita has a positive effect andunemployment a negative effect on a country'snet international migration.     

技术与社会网络资本——关于中国农村妇女社会网络资本的研究视角

对中国农村妇女社会网络资本的研究不能仅限于社会关系范围,做些理论的论证或定性的结论,而是要针对她们的社会网络资本现状,以技术为切入点,分析农村妇女所拥有的技术资本的多少从而评判其社会网络资本的优劣,这样才能使研究走向深入。