Complete designs with blocks of maximal multiplicity

The set of distinct blocks of a block design is known as its support. We construct complete designs with parameters v(?7), k=3, λ=v ? 2 which contain a block of maximal multiplicity and with support size $\text{b}{}^1\text{= (}{}^{\mathrm{v}}{}_3\text{) ? 4(v ? 2)}$. Any complete design which contains such a block, and has parameters v, k, λ as above, must be supported on at most (^v₃) ? 4(v ? 2) blocks. Attention is given to complete designs because of their direct relationship to simple random sampling.     

Meta-analysis of the impact of age structure on fertility

The paper uses a meta-analysis to comparatively evaluate the literature addressing the aggregate relationship between a populations age structure and fertility, as hypothesized by Richard Easterlin. The analysis is based on 334 estimated effects retrieved from 19 studies. The results suggest that several factors undermine the empirical support of the Easterlinian age structure/fertility link. These include the neglect of income, the use of relative cohort size to characterize the age structure, mis-specifications of the relevant age-cohorts, as well as the functional form and estimation technique. The results also suggest that the sample of published estimates possibly suffers from two types of publication bias, an under-representation of insignificant effects for small samples, and bias towards supportive effects in the earlier years followed by a bias towards negative effects as the literature matured.All correspondence to: Brigitte Waldorf. The authors appreciate the insightful comments and suggestions from two anonymous reviewers. The research also benefited from discussions with participants of the International Colloquium on Meta-analysis in Economics, Free University, Amsterdam, The Netherlands, December 2002. Finally, we would like to thank David Brown, Meagan Cahill, Angela Donelson, Calvin Farris, and Melaney Seacat from the University of Arizona for their research assistance. Responsible editor: Junsen Zhang.     

Information in experiments and sufficiency

We define measures of information contained in an experiment which are by-products of the parametric measures of Fisher, Vajda, Mathai and Boekee and the non-parametric measures of Bhattacharyya, Rényi, Matusita, Kagan and Csiszár. We use these measures to compare sufficient experiments according to Blackwell's definition. In particular, we prove that if δ_X and δ_Y are two experiments and δ_X≥δ_Y then l_X≥l_y for all of the above measures.     

Quality of life indicators and program evaluation

Social indicators and program evaluation research have much in common. Quality of life work specifically raises the question of objective versus subjective variables, aggregate data versus distributional and individual issues, and the reference standards used in judgment and evaluation decisions. This article presents perspectives on these issues from the orientation of quality of life research and proposes that these approaches have relevance for program evaluation work.     

基于B／S模式的高校辅导员综合考评系统的设计与实现

利用现代信息技术加强辅导员队伍的管理,特别是抓好辅导员的综合考评,是推进高校辅导员队伍建设的一个重要课题。结合高校辅导员考核的实际需求,根据人力资源管理理论中的360。模糊评价理论,在进行总体结构和设计方案论证基础上,基于B／S（Browser／Server,浏览器／服务器）模式,通过ASP．NET技术,采用sQLServer2005作为后台数据库设计的高校辅导员综合考评系统,具有架构合理、操作简便、考评效率高的特点。     

基于高并发及大数据量的B2B商务系统的设计与实现

从高并发及大数据量的角度分析并设计了B2B商务系统的功能模块,主要包括首页、会员系统、信息展示系统、社区系统、网站后台管理系统等五部分。并根据功能模块的要求结合大数据量存储与高负载查询的要求,进行了数据库结构设计。最后从改善SQL语句执行效率、页面静态化、缓存技术以及索引技术等四方面研究了满足高负载、高并发性、大数据量时,改善系统整体性能的关键技术。     

跨境电子商务合同履行流程研究

“互联网+外贸”促进了跨境电子商务的蓬勃发展。而跨境电子商务贸易中最重要的环节为合同履行的过程,它是指在跨境电子商务合同商订后,买卖双方需要做的以使整个交易顺利完成的所有工作,其具体流程主要包括买方付款、卖方发货、报检进仓、平台报关和物流配送及信息跟踪。但目前由于我国的跨境电子商务刚刚起步,政策监管体系还不完善,政策支持还未到位,合同履行中第三方支付、物流、检验检疫以及报关纳税等流程都存在诸多问题。因此,针对这些具体问题,需要在现有交易支付平台上建立健全用户核对系统,确保交易安全,还要构建跨境电子商务风险监控和质量追溯体系,并创新海关监管模式,完善申报制度,并尽快建立一套完善的物流整体解决方案来实现物流、海关和商检等环节的快速衔接,进而促进我国跨境电子商务的快速健康发展。     

抗战时期基督教夏令儿童会初探

夏令儿童会是近代在华诸差会为养成儿童“基督化人格”。为教会造就生力军而开展的一项涉及儿童的教会工作。随着抗日战争的到来，由中华全国基督教协进会发起倡导的夏令儿童会，在中华基督教宗教教育促进会的领导推动之下，迎难而上．除每年七八两月按时照例开办之外．并在一定程度上服务于战时难童救济工作。本文以中华全国基督教协进会月刊《中华归主》为主要资料来源，通过对其中有关夏令儿童会资料的梳理，探求国难时期协进会系统下夏令儿童会的历史真相。     

B/S模式的PSC现代化管理系统的构建

探索网络环境下的普通话测试与管理,已经成为一个很重要的课题。本文主要研究B/S模式下的PSC现代化管理系统构建,从硬件、软件、网络服务各方面提出设计理念。