Estimation of a common mean vector in bivariate meta-analysis under the FGM copula

We propose a bivariate Farlie–Gumbel–Morgenstern (FGM) copula model for bivariate meta-analysis, and develop a maximum likelihood estimator for the common mean vector. With the aid of novel mathematical identities for the FGM copula, we derive the expression of the Fisher information matrix. We also derive an approximation formula for the Fisher information matrix, which is accurate and easy to compute. Based on the theory of independent but not identically distributed (i.n.i.d.) samples, we examine the asymptotic properties of the estimator. Simulation studies are given to demonstrate the performance of the proposed method, and a real data analysis is provided to illustrate the method.     

Notes on the MLE of correlation coefficient in meta analysis

We study the properties of two approximations to the MLE of the correlation coefficient based on estimates from several studies in meta analysis. Our work is based on an approximation to the density of a function of the sample product-moment estimate due to Dclury, Hsu, and Kraemer. Regarding this approximation, we point out and correct some mistakes in the literature.     

A non-inferiority test for diagnostic accuracy in the absence of the golden standard test based on the paired partial areas under receiver operating characteristic curves

Non-inferiority tests are often measured for the diagnostic accuracy in medical research. The area under the receiver operating characteristic (ROC) curve is a familiar diagnostic measure for the overall diagnostic accuracy. Nevertheless, since it may not differentiate the diverse shapes of the ROC curves with different diagnostic significance, the partial area under the ROC (PAUROC) curve, another summary measure emerges for such diagnostic processes that require the false-positive rate to be in the clinically interested range. Traditionally, to estimate the PAUROC, the golden standard (GS) test on the true disease status is required. Nevertheless, the GS test may sometimes be infeasible. Besides, in a lot of research fields such as the epidemiology field, the true disease status of the patients may not be known or available. Under the normality assumption on diagnostic test results, based on the expectation-maximization algorithm in combination with the bootstrap method, we propose the heuristic method to construct a non-inferiority test for the difference in the paired PAUROCs without the GS test. Through the simulation study, although the proposed method might provide a liberal test, as a whole, the empirical size of the proposed method sufficiently controls the size at the significance level, and the empirical power of the proposed method in the absence of the GS is as good as that of the non-inferiority in the presence of the GS. The proposed method is illustrated with the published data.     

Order statistics and test duration

There are two principal issues in statistical planning. One is the accuracy/reliability of statistical inference and the other is the length of test time needed to complete the designed experiment. With regard to the latter, various test schemes have been proposed and applied in statistical literature. These schemes, among others, include type-I censoring, the usual type-II censoring, and progressively type-II censoring. To implement any of these experiments it is necessary that the capacity of the test facility is large enough so that all the items can be tested simultaneously. If, however, instead of having one facility with large capacity there are several facilities with relatively smaller capacities, a differently designed experiment would be necessary. This paper studies and compares elapsed test times and total elapsed test times corresponding to different statistical plans. The results obtained here are useful for performing an experiment that has shorter test time in a certain sense.     

寓情于教——情感因素在外语教学中的作用

人们对于外语学习中的认知能力做过很多调查研究，但对于情感因素所起的作用并未引起充分的重视。本文旨在从学生的情感因素对外语学习的影响入手，分析几种情感因素，如焦虑、动机、自尊、移情在语言学习中的作用，并结合教学实际提出了几点建议。     

现代工业制造模式的变迁及比较研究

本文针对未来工业生产的发展方向,界定了工业制造的三种模式———减量制造、等量制造和增量制造,在此基础上总结了三种模式之间的本质区别。     

面向需求学以致用——美国海军研究生院文科特色初探

美国海军研究生院的文科有着自己鲜明的特色,对于中国军队综合性大学具有借鉴意义.本文从人才培养、科学研究、远程教育等方面总结美国海军研究生院的特色,以便使中国军队综合性大学从中获得启示.     

Child care subsidy and child maltreatment

This study examined the relationship between receipt of child care subsidies and child maltreatment investigations in a sample of low‐income mothers in Illinois. We expected that receiving child care subsidies would have a protective effect on child maltreatment risk and therefore decrease the likelihood of child protective services investigations. Using structural equation modelling, we tested the direct and indirect paths of the receipt of child care subsidies to physical abuse or neglect. We found only direct effects of receiving child care subsidies on both physical abuse and neglect investigations. The findings suggest an important protective role of child care subsidies in the lives of low‐income families.     

The effect of the still‐face paradigm on infant behavior: A cross‐cultural comparison between mothers and fathers

Most still‐face paradigm (SFP) studies have been done in Western families with infant–mother dyads. The present study investigated the SFP pattern in 123 Dutch and 63 Chinese 4‐month‐old infants with mothers and fathers. The classic SFP effect was found for positive affect and gaze in both countries. For negative affect, Chinese infants showed a different SFP pattern than Dutch infants. With fathers, infants displayed a less pronounced SFP pattern for positive affect and an increase from the still face to the reunion for negative affect. Only a minority of infants showed the expected SFP pattern across episodes. Our findings support that infant emotion expression is influenced by parent gender and cultural context. An interesting avenue for further study is the exploration of the origins of within‐ and between‐gender and culture differences in affective communication between parents and infants.     

抗战时期西南实业协会的成立及其主要活动

西南实业协会是抗战时期大后方的一个重要社会组织。该协会的前身应追溯到1932年开始的星五聚餐会。全面抗战爆发后,为促进大后方实业发展,实业界人士于1939年在重庆组织成立了西南实业协会,并开展一些活动。