Shrinkage confidence intervals for the normal mean: Using a guess for greater efficiency

If the unknown mean of a univariate population is sufficiently close to the value of an initial guess then an appropriate shrinkage estimator has smaller average squared error than the sample mean. This principle has been known for some time, but it does not appear to have found extension to problems of interval estimation. The author presents valid two‐sided 95% and 99% “shrinkage” confidence intervals for the mean of a normal distribution. These intervals are narrower than the usual interval based on the Student distribution when the population mean lies in such an “effective interval.” A reduction of 20% in the mean width of the interval is possible when the population mean is sufficiently close to the value of the guess. The author also describes a modification to existing shrinkage point estimators of the general univariate mean that enables the effective interval to be enlarged.     

论人事保证的制度功能及我国的立法选择——兼评《劳动合同法》第9条

《劳动合同法》第9条在现有立法禁止劳动合同物的担保的基础上，进一步否定了人的担保，与很多国家以及我国台湾地区立法上的规定不同。从社会学和经济学的视角分析了人事保证制度的基本功能，客观评价了既存人事保证制度，在此基础上提出我国立法对现有人事保证制度不应该全盘否定，而应该扬弃，重新界定人事保证的内涵。     

A Sparse Implementation of the Average Information Algorithm for Factor Analytic and Reduced Rank Variance Models

Factor analytic variance models have been widely considered for the analysis of multivariate data particularly in the psychometrics area. Recently Smith, Cullis & Thompson (2001) have considered their use in the analysis of multi‐environment data arising from plant improvement programs. For these data, the size of the problem and the complexity of the variance models chosen to account for spatial heterogeneity within trials implies that standard algorithms for fitting factor analytic models can be computationally expensive. This paper presents a sparse implementation of the average information algorithm (Gilmour, Thompson & Cullis, 1995) for fitting factor analytic and reduced rank variance models.     

财务治理效率：决定公司治理中的核心地位

财务治理从公司内部治理入手,抓住关键控制权———财权以及关键信息———财务信息和相应的激励机制,在治理目标上超越权力的制衡,对公司的财务决策与经营效率起到有效的制度保障作用,真正体现了治理的效率与公平,决定了其在公司治理中的核心地位。     

汉字字形结构蕴涵文化信息的特性

汉字字形蕴涵文化信息,具体体现在字形结构之中。字形结构蕴涵文化信息具有意象的直观性、构件结体的整体化合性和字形结构组合的辩证性。     

用Office实现学报编辑部办公信息化管理

从编辑部工作需要的角度,用Office作为应用软件系统,具体阐述了学报编辑部实现处理稿件信息化管理的建库工作.论述了综合运用Word、Excel和Access实现编辑部稿件处理过程的信息化管理途径.用Office完成编辑部工作的信息化管理,为编辑部的信息网上传播提供了坚实的基础和广阔的空间.     

Some results on optimality in models with heteroscedastic errors from partial optimum designs

This paper studies optimum designs for linear models when the errors are heteroscedastic. Sufficient conditions are given in order to obtainD-, A- andE-optimum designs for a complete regression model from partial optimum designs for some sub-parameters. A result about optimality for a complete model from the optimality for the submodels is included. Supported by Junta de Andalucía, research group FQM244.     

信息资源会计:企业信息化效益计量和评价的新思路

全面系统地对信息资源投入和收益的计量和评价一直是推动企业信息化工作的难点 ,解决该问题的一个新思路是 :信息资源会计。信息资源是广义的概念 ,即包括信息内容和信息技术、设施、人员等全部支持要素在内。企业信息化必然要投入信息资源 ,结果会引起组织资源配置的变化和重新组合 ,以货币价值形式计量、分析、评价这一过程就是信息资源会计的主要职能。     

信息技术与中外语教学

本文从七个方面探讨了信息技术对中外语教学的变革,并从四个方面对政府和高校的教学管理部门提出适应变革的建议。     

论信息时代提高学术期刊竞争力的措施

信息时代对学术期刊提出了更高要求.为了适应时代的要求,在激烈的竞争中立于不败之地.学术期刊必须提高竞争力.本文从提高编辑队伍的综合素质、提高刊物质量、利用多种途径扩大刊物的影响、加强编辑部内部的管理等四个方面提出了提高学术期刊竞争力的几项措施.