Statistical Microcomputing—Like it is

A statistical software package is a collaborative effort between a program's authors and users. When statistical analysis took place exclusively on mainframe computers, the entire statistical community was served by some three to six major packages, which helped to ensure that program errors would be quickly uncovered and corrected. The current trend toward performing statistical analysis on microcomputers has resulted in an explosion of software of varying quality, with more than 200 packages for the IBM PC alone. Since all of these programs are competing for the same base of knowledgeable users, the number of sophisticated users per package is dramatically less than for mainframe packages; the net result is that problems in any particular package are more likely to go unnoticed and uncorrected. For example, the most widely used shareware package contains major errors that should cause it to be rejected out of hand, and three best-selling packages analyze unbalanced two-factor experiments using an approximate technique originally developed for hand calculation. Several strategies are offered to help author and user reveal any problems that might be present in their software.     

The Detection of Influential Observations for Allocation,Separation, and the Determination of Probabilities in a Bayesian Framework

Normal theory separation and allocation problems are discussed from a predictive point of view. Influence statistics are defined and employed to ascertain the impact that particular observations will have on the inferential goals—allocation of future observations, separation between populations, and the determination of probabilities for future cases. Methods are illustrated on a collection of financial data taken from Johnson and Wichern (1982).     

中央苏区调查统计工作的内容和成效 ——中央苏区调查统计工作的光辉实践与有益启示（二）

 中央苏区制发了众多的统计报表全面反映战争和建设情况,采取多种调查统计方法确保数据真实可靠,并利用丰富的调查统计资料积极开展统计分析,及时发布统计资料,为革命战争和苏区经济建设服务。     

The numerical evaluation of the distribution function of a bilinear from to a quadratic from with econometric examples

This paper considers a general and computationally convenient method of evaluating the distribution function of statistics that are the ratio of a bilinear form to a quadratic form. Numerous Economemc applications of the method are given.     

Interval estimation in discriminant analysis for large dimension

This paper is concerned with the interval estimation for the log odds of the posterior probability that the observation vector belongs to one of two homoscedastic multivariate normal distributions (Π₁ and Π₂). We give the limiting distribution of the unbiased estimator for the log odds as the sample sizes and the dimension jointly tend to infinity, and approximate the confidence interval based on the asymptotic distribution. Small-scale simulations are performed to check the precision of the approximation.     

大数据的整合分析方法

大数据具有数据来源差异性、高维性及稀疏性等特点,如何挖掘数据集间的异质性和共同性并降维去噪是大数据分析的目标与挑战之一。整合分析（Integrative Analysis）同时分析多个独立数据集,避免因地域、时间等因素造成的样本差异而引起模型不稳定,是研究大数据差异性的有效方法。它的特点是将每个解释变量在所有数据集中的系数视为一组,通过惩罚函数对系数组进行压缩,研究变量间的关联性并实现降维。本文从同构数据整合分析、异构数据整合分析以及考虑网络结构的整合分析三方面梳理了惩罚整合分析方法的原理、算法和研究现状。统计模拟发现,在弱相关、一般相关和强相关三种情形下, Group Bridge、 Group MCP、Composite MCP都表现良好,其中 Group Bridge的假阳数最低且最稳定。最后,将整合分析用于研究具有来源差异性的新农合家庭医疗支出,以及具有超高维、小样本等大数据典型特征的癌症基因数据,得到了一些有意义的结论。     

我国县域金融竞争力指标的设计与提升路径的研究——以连云港四县为样本的分析

县域金融作为推动县域经济发展的核心力量之一,其金融竞争力已成为县域金融发展的主要标志与目标。准确的界定金融竞争力内涵,科学的设计评价指标,对于明确一个县级地方的金融发展目标和措施至关重要。本文以区域金融竞争为理论基础,进一步探讨县域金融竞争力的基本内涵与外延,构建评价县域金融竞争力的指标体系,并以连云港四个典型县为分析样本,比较县金融竞争力的差距,并提出发展的导向建议,为全国县域经济与金融的耦合协同发展提供参考性蓝本。     

大学选修课“选而不修”问题的分析与对策——以公选课《美国文化解读》为例

各普通高校对英语选修课日趋重视,然而学生选而不修的问题也很突出。作者在对两学期的选修课授课对象从选课动机、课后作业、考核方式、存在问题等方面分别进行了两次问卷调查之后,在认真对比和分析调查结果数据基础上,结合《美国文化解读》教学实例,对大学英语选修课程体系在教学和管理方面提出了一些设想和对策。     

英语文体学与大学英语精读教学

在大学英语精读教学中,适当运用文体学教法,可以培养学生学习英语的兴趣,有助于提高学生听说读写的能力,以便进行有效的交流,同时也有助于教学目标的顺利完成.     

出生性别比影响因素的通径分析——以第五次全国人口普查数据为基础

根据我国的特殊情况,分别建立了城市和农村两个模型,并利用第五次全国人口普查的县(区)级单位数据,对出生性别比变化的直接和间接影响因素进行通径分析,发现:家庭规模和教育水平对城市的出生性别比影响较大,而医疗、经济发展和教育水平对农村的出生性别比影响显著,据此提出,降低出生性别比应采取加大现代生育观念的宣传力度、形成先进生育文化舆论环境、着力提高女性的文化程度和相应的社会地位以及加强对农村医疗服务机构的规范化管理等针对性措施。