Distribution of the two‐sample t‐test statistic following blinded sample size re‐estimation

We consider the blinded sample size re‐estimation based on the simple one‐sample variance estimator at an interim analysis. We characterize the exact distribution of the standard two‐sample t‐test statistic at the final analysis. We describe a simulation algorithm for the evaluation of the probability of rejecting the null hypothesis at given treatment effect. We compare the blinded sample size re‐estimation method with two unblinded methods with respect to the empirical type I error, the empirical power, and the empirical distribution of the standard deviation estimator and final sample size. We characterize the type I error inflation across the range of standardized non‐inferiority margin for non‐inferiority trials, and derive the adjusted significance level to ensure type I error control for given sample size of the internal pilot study. We show that the adjusted significance level increases as the sample size of the internal pilot study increases. Copyright © 2016 John Wiley & Sons, Ltd.     

新传媒语境下电视新闻节目的时空观

信息传播技术革命在社会的方方面面产生了深刻的影响,最为突出的表现就是公众时空观的变化,这构成了学术界和业界一直关注的新传媒生态的根本话题。以电视新闻节目为研究的具体对象,从新媒介语境下时空观的变化入手,并以电视新闻报道节目的实践为参考,从理论而后实践的维度系统地考察了新传媒语境下时空观对电视新闻节目产生的影响。     

Symmetrical Design of Experiment in Global Sensitivity Analysis Based on ANOVA High-dimensional Model Representation

This article reviews symmetrical global sensitivity analysis based on the analysis of variance of high-dimensional model representation. To overcome the computational difficulties and explore the use of symmetrical design of experiment (SDOE), two methods are presented. If the form of the objective function f is known, we use SDOE to estimate the symmetrical global sensitivity indices instead of Monte Carlo or quasi-Monte Carlo simulation. Otherwise, we use the observed values of the experiment to do symmetrical global sensitivity analysis. These methods are easy to implement and can reduce the computational cost. An example is given by symmetrical design of experiment.     

Understanding Estimators of Treatment Effects in Regression Discontinuity Designs

In this paper, we propose two new estimators of treatment effects in regression discontinuity designs. These estimators can aid understanding of the existing estimators such as the local polynomial estimator and the partially linear estimator. The first estimator is the partially polynomial estimator which extends the partially linear estimator by further incorporating derivative differences of the conditional mean of the outcome on the two sides of the discontinuity point. This estimator is related to the local polynomial estimator by a relocalization effect. Unlike the partially linear estimator, this estimator can achieve the optimal rate of convergence even under broader regularity conditions. The second estimator is an instrumental variable estimator in the fuzzy design. This estimator will reduce to the local polynomial estimator if higher order endogeneities are neglected. We study the asymptotic properties of these two estimators and conduct simulation studies to confirm the theoretical analysis.     

Indirect membership function assignment based on ordinal regression

In many fuzzy sets applications, fuzzy membership functions are commonly developed based on empirical or expert knowledge. The equation of a membership function is usually determined somewhat arbitrarily. This paper explores a novel membership function design method based on ordinal regression analysis. The estimated thresholds between ordinal measurement categories are applied to calculate the intersection points between fuzzy sets. These intersection points are further applied to determine the equations of the membership functions. Information distortion due to empirical guess can thus be reduced and more latent information in the fuzzy responses can therefore be captured. A case study investigating the relationship between foster mothers’ satisfaction and the foster time and information provided has been conducted in this research. The applicability and effectiveness of the proposed membership function assignment approach have been demonstrated through several case studies.     

被告人程序选择权的界定及其正当性探析

作为刑事被告人人权保障的一个方面,现代法治国家普遍尊重并在不同程度上赋予了被告人以程序选择权--即在法定范围内,被告人有权依自己的意愿选择刑事诉讼的有关程序及与程序有关的事项,具体如对审判程序的选择和对审判方式的选择.虽然程序选择权未被表述为被告人最基本、最重要的诉讼权利,但因其有着广泛的理论依据从而具备了存在和发展的正当性,故在我国的刑事诉讼中也应当受到重视.     

美国制裁国际卡特尔的赦免制度介评

美国反垄断部门出台的赦免制度在制裁国际卡特尔方面发挥着极为重要的作用,该制度规定参加卡特尔的公司中第一个向政府揭发该卡特尔的公司可免除刑事责任。赦免制度有效实施的基础包括三个方面,即管辖地的反垄断法必须对参与卡特尔的公司制定严厉的惩罚措施、卡特尔成员面临着被反垄断部门查处的巨大风险、赦免制度具有透明度和可预见性。美国的赦免制度已相当成熟和完善,实践也证明这一制度具有极大的应用价值,这对于我国制定反垄断法、有效制裁国际卡特尔具有重要的借鉴意义。     

论港口产业规制契约的重新设计

20世纪70年代以后,在世界范围内出现港口产业规制改革浪潮,竞争机制和私人部门被更多地引入。那么在港口产业规制的新框架下,有必要对规制契约进行重新设计,以满足港口规制实践的需要。对包括价格上限规制、投资规制等在内的港口产业规制契约的核心内容进行了说明,并探讨了契约重新设计中若干关键要素的确定。     

工业设计的多元功能及其对河南开放带动战略的影响

全面、准确地认识工业设计的多元功能是发展和利用工业设计的前提。工业设计与产品直接相关的功能称为工业设计的直接功能或微观功能,工业设计通过产品表现出来的对经济运行全局发生作用或影响的功能叫间接功能或宏观功能。工业设计的多元功能对河南开放带动经济战略的实施,有重要的推动作用。     

中国传统纹饰与现代设计

面对中国的设计现状,我们应该倡导民族文化和先进文化,使中国的传统文化艺术在现代设计中得以延伸发展,打造新的民族形式,在理解的基础上取其“形”、延其“意”、从而传其“神”,用中国传统文化精粹,以现代化国际化语言来表达,使民族的文化精神和世界的设计语言,共同融汇成现代设计艺术的主流,必定会使现代设计更具文化性与社会性。