On adaptive procedures controlling the familywise error rate

The idea of modifying, and potentially improving, classical multiple testing methods controlling the familywise error rate (FWER) via an estimate of the unknown number of true null hypotheses has been around for a long time without a formal answer to the question whether or not such adaptive methods ultimately maintain the strong control of FWER, until Finner and Gontscharuk (2009) and Guo (2009) have offered some answers. A class of adaptive Bonferroni and S?idàk methods larger than considered in those papers is introduced, with the FWER control now proved under a weaker distributional setup. Numerical results show that there are versions of adaptive Bonferroni and S?idàk methods that can perform better under certain positive dependence situations than those previously considered. A different adaptive Holm method and its stepup analog, referred to as an adaptive Hochberg method, are also introduced, and their FWER control is proved asymptotically, as in those papers. These adaptive Holm and Hochberg methods are numerically seen to often outperform the previously considered adaptive Holm method.     

Objective and Subjective Rationality in a Multiple Prior Model

A decision maker (DM) is characterized by two binary relations. The first reflects choices that are rational in an “objective” sense: the DM can convince others that she is right in making them. The second relation models choices that are rational in a “subjective” sense: the DM cannot be convinced that she is wrong in making them. In the context of decision under uncertainty, we propose axioms that the two notions of rationality might satisfy. These axioms allow a joint representation by a single set of prior probabilities and a single utility index. It is “objectively rational” to choose f in the presence of g if and only if the expected utility of f is at least as high as that of g given each and every prior in the set. It is “subjectively rational” to choose f rather than g if and only if the minimal expected utility of f (with respect to all priors in the set) is at least as high as that of g. In other words, the objective and subjective rationality relations admit, respectively, a representation à la Bewley (2002) and à la Gilboa and Schmeidler (1989). Our results thus provide a bridge between these two classic models, as well as a novel foundation for the latter.     

An Optimality Probability Index for Correlated Multiple Responses

In the real problems, there are many cases which have correlated quality characteristics so multiple response optimization can be more realistic if we can consider correlation structure of responses. In this study we propose a new method which uses multivariate normal probability to find the optimal treatment in an experimental design. Moreover, a heuristic method is used to find better factors’ level in all possible combinations in the designs with large number of controllable factors and their levels. Some simulated numerical examples and a real case were studied by the proposed approach and the comparison of the results with previous methods show efficiency of the proposed method.     

Evaluating the Effectiveness of the Stimulus Pairing Observation Procedure and Multiple Exemplar Instruction on Tact and Listener Responses in Children with Autism

The Analysis of Verbal Behavior - The stimulus pairing observation procedure (SPOP) combined with multiple exemplar instruction (MEI) has been shown to be effective with typically developing...     

Stationary analysis of a BMAP/R/1 queue with R-type multiple working vacations

We consider an infinite-buffer single server queue with batch Markovian arrival process (BMAP) and exhaustive service discipline under multiple working vacation policy. The service time during a working vacation is generally distributed random variable which is independent of the service times during a normal busy period as well as the arrival process. Duration of service times during a normal busy period and duration of working vacation times follow the class of distributions whose Laplace-Stieltjes transforms are rational functions (R-type distributions). The service time during a normal busy period, working vacation time, and the service time during a working vacation are independent of each other as well as of the arrival process. If a working vacation terminates while service is going on for a customer at head of the queue in vacation mode then, the server switches to normal mode and the customer at head of the queue is entitled to receive a full service time in the normal busy period irrespective of the amount of service received by the customer at head of the queue during the previous working vacation period. We obtain system-length distributions at various epoch, such as post-departure, pre-arrival, arbitrary, and pre-service. The proposed analysis is based on the use of matrix-analytic procedure to obtain system-length distribution at post-departure epoch. Later, we use supplementary variable technique and simple algebraic manipulations to obtain system-length distribution at arbitrary epoch using the system-length distribution at post-departure epoch. Some important performance measures, such as mean system lengths and mean waiting time have been obtained. Finally, some numerical results have been presented in the form of tables and graphs to show the applicability of the results obtained in this article. The model has potential application in areas of computer and communication networks, such as ethernet passive optical network (EPON).     

城市家长对托育服务的需求及期望——基于3089 位家长的调查研究

根据国家卫生计生委办公厅开展《城市家庭3岁以下婴幼儿托育服务需求调查工作的通知》的相关工作,旨在了解0-3岁婴幼儿家长的托育及育儿需求,能够为将来规划托育机构建设、保育人员从业能力培训、托育服务行业规范及家长育儿提供相应指导。托育服务供给应当准确把握服务利用方的需求,准确体现托育机构的针对性供给,满足城市家长的入托需求,有效增加托育服务供给的可及和可得性。本文在温州市随机抽取3089位0-3岁儿童家长作为样本进行问卷调查,采用多分类Lo?gistic回归方法进行数据分析,明确影响入托需求的主要因素,针对城市家长对婴幼儿托育服务的需求偏好,采用多因素方差分析进行数据分析,为3岁以下婴幼儿托育服务有效供给提供对策及建议。     

论高校《现代汉语》教学的二元矛盾和多元对策

高校<现代汉语>教学具有系统的封闭性和外延的开放性、知识的重复性和内容的完整性、信息的丰富性和结构的枯燥性、理论的局限性和实践的灵活性等二元矛盾.因此,应构建合理而和谐的教材体系,探索生动而灵活的教学模式.     

Using data augmentation to correct for non-ignorable non-response when surrogate data are available: an application to the distribution of hourly pay

Summary.  The paper develops a data augmentation method to estimate the distribution function of a variable, which is partially observed, under a non-ignorable missing data mechanism, and where surrogate data are available. An application to the estimation of hourly pay distributions using UK Labour Force Survey data provides the main motivation. In addition to considering a standard parametric data augmentation method, we consider the use of hot deck imputation methods as part of the data augmentation procedure to improve the robustness of the method. The method proposed is compared with standard methods that are based on an ignorable missing data mechanism, both in a simulation study and in the Labour Force Survey application. The focus is on reducing bias in point estimation, but variance estimation using multiple imputation is also considered briefly.     

Estimation of variance based on a ranked set sample

In this paper we examine the problem of the estimation of the variance σ² of a population based on a ranked set sample (RSS) from a nonparametric point of view. It is well known that based on a single cycle RSS, there does not exist an unbiased estimate of σ². We show that for more than one cycle, it is possible to construct a class of quadratic unbiased estimates of σ² in both balanced and unbalanced cases. Moreover, a minimum variance unbiased quadratic nonnegative estimate of σ² within a certain class of quadratic estimates is derived.     

Job stressors, coping, and psychological distress among Japanese employees: interplay between active and non-active coping

In this study the sole and the combined effects of active and non-active forms of coping on psychological distress across various kinds of job stressors were examined. Data on job stressors, coping and psychological distress were obtained from 4487 male employees of a research institute in the automobile industry in Japan (mean age=36.27 years, SD = 7.43). A hierarchical moderated multiple regression analysis was conducted to estimate and test the significance of the main effects and their interactions. The results show that although active coping was effective in decreasing psychological distress regardless of the type of job stressor, the effectiveness was weaker in situations that require effortful coping, such as role ambiguity and insufficient authority. Furthermore, the effectiveness of active coping was influenced by the other strategies, especially in effortful coping situations. While distancing or seeking social support improved the effectiveness, restraint coping reduced it. These results suggest that the type of non-active coping that individuals combine with active coping can be critical in determining health outcomes in more complex and effortful coping situations. Consideration of the coping combinations, not merely the situational context, is important in explaining how the work environment influences employees' psychological distress.