Nonresponse weighting adjustment using estimated response probability

To reduce nonresponse bias in sample surveys, a method of nonresponse weighting adjustment is often used which consists of multiplying the sampling weight of the respondent by the inverse of the estimated response probability. The authors examine the asymptotic properties of this estimator. They prove that it is generally more efficient than an estimator which uses the true response probability, provided that the parameters which govern this probability are estimated by maximum likelihood. The authors discuss variance estimation methods that account for the effect of using the estimated response probability; they compare their performances in a small simulation study. They also discuss extensions to the regression estimator.     

我国地方政府制度创新的路径选择

从分析我国地方政府制度创新的动因入手，着重从三个方面讨论了我国地方政府制度创新的路径，即地方政府应履行自己的产权职能，以制度创新促进产权的多元化，并通过产权保护，解决微观主体的动力激励问题；以制度化规范中央与地方的制度创新关系；退出市场职能领域，实现制度创新的范式转换。     

对地方工科大学开展"双语教学"的认识

随着社会经济形势的发展,中国迫切需要大批了解世界各国文化、科技的高素质人才,高校开展双语教学,是积极主动适应这一社会需要的重要举措.文章分析了地方工科大学开展双语教学的意义和所面临的问题,并就如何提高双语教学的效果提出一些看法.     

新微派建筑初探

文章探讨了新徽派建筑的类型和特征,对新徽派建筑的作品进行了评析。分析了20世纪80年代以来新徽派建筑的四条主要探索途径及成因,着重论述了它推陈出新的内涵和美学特征以及对新地方风格建筑探索的启示意义。     

Goodness‐of‐fit methods for matched case‐control studies

The authors propose graphical and numerical methods for checking the adequacy of the logistic regression model for matched case‐control data. Their approach is based on the cumulative sum of residuals over the covariate or linear predictor. Under the assumed model, the cumulative residual process converges weakly to a centered Gaussian limit whose distribution can be approximated via computer simulation. The observed cumulative residual pattern can then be compared both visually and analytically to a certain number of simulated realizations of the approximate limiting process under the null hypothesis. The proposed techniques allow one to check the functional form of each covariate, the logistic link function as well as the overall model adequacy. The authors assess the performance of the proposed methods through simulation studies and illustrate them using data from a cardiovascular study.     

发展用户驻地网与打破本地固话垄断

本文提出了一个发展用户驻地网的思路,着重论述了发展用户驻地网可有效地打破本地固话垄断,兼述了发展驻地网对电信管制的影响及发展驻地网所需解决的问题。     

太平天国乡官的任用标准与社会功效

对太平天国乡官制度的研究,传统的阶级分析论观点过分拘泥在乡官的阶级成分上,并以此为基础判定政权的性质。其实,以历史当事人的视角去认识当时的政策,是一种更客观的研究角度。太平天国任用乡官的标准,是建立在太平天国地方行政的政治需要之上的。出于以征收粮赋为重点的传统地方行政的需要,太平天国着意与精通传统行政事务的地方名流合作。从社会功效角度来看,太平天国当局通过发挥地方人士的行政优势,很好地弥补了自身行政经验的不足,成功影响了地方政治,并有效缓冲了自身对农村社会的冲击。     

Performance measurement and classification data in DEA: Input-oriented model

This paper presents an improved efficiency measurement tool by modifying the existing data envelopment analysis methodology to permit the incorporation of expert knowledge. A previous paper examined the inclusion of such knowledge within the additive model. This information appeared in the form of a binary classification of a subset of the decision making units under study (e.g. good versus poor performers). In the current paper, we extend this logic to the input-oriented radial projection model. We demonstrate that the inclusion of this and other forms of expert judgment can improve the performance of the DEA tool in the sense that the efficiency scores are more in line with expert/management beliefs.     

Markov Properties for Acyclic Directed Mixed Graphs

We consider acyclic directed mixed graphs, in which directed edges ( x → y ) and bi-directed edges ( x ↔ y ) may occur. A simple extension of Pearl's d -separation criterion, called m -separation, is applied to these graphs. We introduce a local Markov property which is equivalent to the global property resulting from the m -separation criterion for arbitrary distributions.     

Asthma Patients' Activities and Air Pollution: A Semiparametric Censored Regression Analysis

Asthma patients' health status may be especially sensitive to some types of air pollution, but the evidence on this is mixed. We explore the effects of ground-level ozone on asthma patient's activities, breaking apart the usual aggregated category of leisure into indoor and outdoor activities, and differentiating those by whether the activities were active or inactive. Applying the semiparametric censored estimation method we demonstrate that even though the period over which activities were observed was relatively low in ozone levels, there is a significant impact of ozone on a few activities. The (non-ozone) economic and demographic variables in the model play significant roles in explaining the allocation of time among seven activities, suggesting the suitability of the approach for other household decision-making contexts.