A robust approach to longitudinal data analysis

The author introduces robust techniques for estimation, inference and variable selection in the analysis of longitudinal data. She first addresses the problem of the robust estimation of the regression and nuisance parameters, for which she derives the asymptotic distribution. She uses weighted estimating equations to build robust quasi‐likelihood functions. These functions are then used to construct a class of test statistics for variable selection. She derives the limiting distribution of these tests and shows its robustness properties in terms of stability of the asymptotic level and power under contamination. An application to a real data set allows her to illustrate the benefits of a robust analysis.     

A Push Toward Equality: Processes Among Dual‐Career Newlywed Couples in Collectivist Culture

This study examines gender construction among dual‐career newlywed couples in a collectivist culture. A qualitative analysis of in‐depth interviews with 20 heterosexual Singaporean couples reveals aspects of the collectivist norms (e.g., doing family, we‐consciousness, marrying one's equal) that are favorable toward the development of gender equality. Additionally, as couples respond to the political and social pulls of economic development, they begin to organize their relationship around both careers. Incorporating egalitarian values becomes a pragmatic move carried out through five direct processes: (a) career as central to the relationship, (b) flexible allocation of household duties, (c) open dialogue regarding conflict, (d) equal say in decision making, and (e) internal self‐reflection. Implications for future research are addressed.     

通过"顺序分配法"探讨成本会计的教学方法

成本会计课程是实践性较强的课程,随着经济发展和会计环境的不断变化,成本会计教学应采取启发式、案例式或问题式等方法,培养学生不断适应新环境、解决新问题的能力。     

Higher order moments of order statistics from INID symmetric random variables

In this paper we present analogues of Balakrishnan's (1989) relations that relate the triple and quadruple moments of order statistics from independent and nonidentically distributed (I.NI.D.) random variables from a symmetric distribution to those of the folded distribution. We then apply these results, along with the corresponding recurrence relations for the exponential distribution derived recently by Childs (2003), to study the robustness of the Winsorized variance.     

发展适合我国国情的物流配送业

物流配送作为一种专业化、社会化的服务模式,适应了社会化大生产、经济一体化发展的需要。文章剖析了物流配送的内涵,在对我国与发达国家和地区物流配送业横向比较的基础上,提出要发展适合我国国情的物流配送业,并围绕组建物流企业集团和建设物流配送中心展开讨论,提出了具体措施和建议。     

先张法斜梁张拉阶段梁体应力试验研究

为得到力筋放张后斜梁的真实应力状态,进行了现场张拉应力测试。由于斜梁理论具有一定的局限性,故借助ANSYS软件对其进行建模得到应力精确值,并将三者的计算结果进行比较分析,借此对结构的安全性进行评价,以期为先张斜梁的张拉应力分析提供了有效的方法和途径。     

收入分配理论与中国收入分配现实

无论是从西方经济理论自身的演变来看 ,还是从经济学与其它学科的合理回归与相互融合来看 ,收入分配问题的研究都愈来愈受到关注。而在收入分配研究中又表现出两大鲜明的特点 :一个是对非收入因素的关注 ,另一个是对社会最底层成员的关注。作者对此进行了较为全面的分析 ,并提出对中国的借鉴意义。     

Algorithms Section: Introduction

Electronic Access to Algorithms
Applied Statistics algorithms are available on Statlib at Carnegie Mellon University and on the UK mirror of Statlib at the University of Kent. They may be accessed either via anonymous file transfer protocol (FTP) or by WWW mosaic.     

核子中价夸克极化分布函数的OCD标度破坏

本文通过对A-P方程作Mellin变换和对演化函数的Mellin变换结果作展开近似,求得了核子中价夸克极化分布函数随Q~2变化的解析表达式,并利用所得结果给出了核子中夸克自旋不对称量的一些理论预言     

单相流体在锅炉并联管组中流量分配规律研究

本文首先对单相流体在并联管组中流量分配研究的重要性作了论述，综合评述了国内外在单相流体流量分配方面的研究工作，在此基础上，结合我国大容量锅炉的运行现状，提出了进一步研究流量分配问题的意见．