A modified common factor model for modelling mortality jointly for both sexes

Journal of Population Research - There is an increasing attention on the joint modelling of multiple populations. Populations are related in several ways, such as neighbouring countries, females...     

A simple procedure for the selection of significant effects

Summary.  Given a large number of test statistics, a small proportion of which represent departures from the relevant null hypothesis, a simple rule is given for choosing those statistics that are indicative of departure. It is based on fitting by moments a mixture model to the set of test statistics and then deriving an estimated likelihood ratio. Simulation suggests that the procedure has good properties when the departure from an overall null hypothesis is not too small.     

Robustness of testing the equality of two slopes in simple linear structural relationships

The usual test of the equality of two slopes in a simple structural relation-ship is the test formed from the normal approximation using the Fisher information matrix, assuming two explanatory variables are independent. This paper examines the robustness if the explanatory variables are, in fact, dependent. A more efficient estimator is derived for a matched pair situation.     

Portmanteau test for conditional heteroscedasticity, using ranks of squared residuals

Squared residual autocorrelations have been found useful in detecting departures from linearity in time series models. This is especially the case with data exhibiting heterogeneity in variances. A rank test is proposed which is much more robust than its parametric counterpart.     

海外华人宗族文化及其历史使命

本文依据近半个世纪以来海外华人宗族的变化和发展，探讨了海外华人宗族文化的实质与特征。认为海外华人宗族文化是华夏宗族文化的外延和演变，具有悠久的历史渊源，深厚的社会基础和丰富的思想文化内涵，以及开放、兼容、更新的自我发展能力，因而它具有强大的生命力。并据此对海外华人宗族文化在２１世纪的发展前景与历史使命作了展望和简要论述。     

韩国公企业的民营化

本研究首先概述有关公企业民营化的理论和模型,然后考察了韩国公企业民营化的历史、实况以及代表性事例,并对其结果进行评价,目的在于为以后成功的民营化探索方向、为中国国有企业的私有化提供可行的方案.     

Efficient heterogeneous sampling for stochastic simulation with an illustration in health care applications

In modeling disease transmission, contacts are assumed to have different infection rates. A proper simulation must model the heterogeneity in the transmission rates. In this article, we present a computationally efficient algorithm that can be applied to a population with heterogeneous transmission rates. We conducted a simulation study to show that the algorithm is more efficient than other algorithms for sampling the disease transmission in a subset of the heterogeneous population. We use a valid stochastic model of pandemic influenza to illustrate the algorithm and to estimate the overall infection attack rates of influenza A (H1N1) in a Canadian city.     

Assessing Participation and Effectiveness of the Peer-Led Approach in Youth Sexual Health Education: Systematic Review and Meta-Analysis in More Developed Countries

Sexual health education for young people is crucial not only for development of norms but also for protection against vulnerabilities during this stage in life. Although several systematic reviews have examined the effectiveness of peer-led sex education, none have focused on the extent of peer participation. The purpose of this review was to evaluate peer-led sexual health education interventions in more developed countries (MDCs). Electronic and manual searches across five social science, education, and medical databases were conducted. Fifteen articles were selected in total. Most (10 of 15) studies gave low or no responsibility to peers. The majority of articles found improvements in sexual health knowledge (13 of 14) and attitudes (11 of 15) at postintervention stages. Two studies showed improved self-efficacy, and three showed behavioral changes. A preliminary synthesis of effectiveness and level of participation was done. Meta-analysis revealed a large effect on knowledge change (Hedges’ g = 0.84, 95% confidence interval [CI]: 0.43 to 1.25) and a medium effect on attitude change (Hedges’ g = 0.49, 95% CI: 0.19 to 0.80). Peer-led interventions could be a powerful tool. This review shows that this approach is effective in changing knowledge and attitudes but not behaviors. Further research and action are needed to understand optimal implementation.     

域外检察改革趋势比较研究

上个世纪七八十年代以来，西方各国相继进行一系列的司法改革，取得了显著成效。当前我国也处于司法改革的关键时期，作为司法改革组成部分的检察制度的改革自然也是重中之重。检察改革的目标是实现公正和效率。但应当改革哪些内容，除以目标为导向外，适当地借鉴其他国家检察改革合理的经验对中国检察改革将大有裨益。文章首先考察了当今世界几个主要国家检察制度改革的新动向，试图从中发现域外检察制度发展的趋势；并结合中国现行检察制度中存在的主要问题，尝试性地提出了一些检察改革的建议。