A Bayesian adaptive design in clinical trials for continuous responses

Adaptive design is a popular concept in several clinical trials, especially in phase III trials. The idea is to allocate treatments to the entering patients according to the state of art of the present data, i.e., to allocate a larger number of patients to the better treatment. The present paper provides a Bayesian formulation of an adaptive allocation design for clinical trials that considers all the continuous responses along with the associated covariates for future allocation. Some Bayesian inferences followed by the allocation are discussed along with a Bayesian prediction for future allocation. The convergence of the allocation probabilities is also discussed along with some related logistics of the design.     

跨国公司价值链布局与中国企业

本文认为,跨国公司为了协调在华投资,形成中国市场上的竞争优势,实现其全球战略利益,充分运用价值链理论,力图将价值链“战略环节”紧紧掌握在母公司内,将对产品价值增值不起决定作用的“非战略环节”转移给中国企业。文章提出,中国企业必须认清链入跨国公司全球价值链的必要性与可能性,掌握链入跨国公司全球价值链的关键点,并时刻关注价值链布局的动态变化,努力挤入跨国公司全球制造网,实现增强国际竞争力和国际化经营能力的目标。     

美军战术通用数据链的发展

中国的外汇储备近年来出现了持续的高速增长,2005年以来更是呈现加速的趋势,2006年6月底已经达到9 411亿美元,超过日本位居世界第一。从目前的国际经济格局和国内经济增长方式、经济结构特征来看,中国的外汇储备持续增长的趋势要想在短期内扭转,必须付出十分艰苦的努力,在一定意义上可以说,即使现在开始着手采取抑止外汇储备持续增长的政策措施,外汇储备可能依然还会继续增长,只不过增幅有可能减缓而已。从这个意义上说,中国下一步的宏观金融政策决策,需要考虑外汇储备持续增长这一市场背景带来的一系列挑战,并做出相应的调整。     

实现区域一体化与政府职能转变

实现区域一体化目标,首要任务就是缩小城乡之间的差别,实现城乡一体化战略,大力推进城镇化建设。政府要适应市场经济的要求,转变职能,以适应新形势下的城镇化与区域一体化的发展。     

美军战场情报广播数据链体系探析

情报广播数据链在美军的战场情报分发体系中占有重要的地位,特别是美军仍在开发中的"综合广播服务"(IBS)系统,被认为是支持美军网络中心战(NCW)的关键数据链之一.文中详细介绍了美军情报广播数据链体系的发展、组成及应用,并分析了其体系架构.     

数据链在陆航典型作战样式中的应用

针对陆航的作战特点，重点研究了在陆航的四种典型作战样式中数据链的应用，提出了陆航利用数据链进行信息化作战的基本思路。     

美国中小企业的发展与就业研究

本文通过梳理美国中小企业发展的路径，分析美国中小企业的发展现状，借助弹性函数的概念建立计量分析模型来分析经济发展与中小企业数量和就业量的关系。分析发现美国经济增长的同时，中小企业的数量和就业量都会有不同程度的增长，而前期的经济衰退却预示着当期中小企业数量和就业量的反方向变化，也即经济衰退时期，中小企业起到了就业缓冲的作用。     

Random dictatorship domains

A domain of preference orderings is a random dictatorship domain if every strategy-proof random social choice function satisfying unanimity defined on the domain is a random dictatorship. Gibbard (1977) showed that the universal domain is a random dictatorship domain. We ask whether an arbitrary dictatorial domain is a random dictatorship domain and show that the answer is negative by constructing dictatorial domains that admit anonymous, unanimous, strategy-proof random social choice functions which are not random dictatorships. Our result applies to the constrained voting model. Lastly, we show that substantial strengthenings of linked domains (a class of dictatorial domains introduced in Aswal et al., 2003) are needed to restore random dictatorship and such strengthenings are “almost necessary”.     

论体育院校图书馆教育职能的核心价值

文章首先从加强体育院校图书馆教育职能的重要性展开论述,阐述了当代图书馆特别是体育院校图书馆教育职能的核心价值,得出了体育院校图书馆的核心价值是素质教育,对目前体育院校如何利用图书馆提高大学生综合素质有较强的现实指导意义。     

Aggregate production functions,growth economics,and the part‐time tyranny of the identity: a reply to Felipe and McCombie

A recent paper by Jesus Felipe and John McCombie argues that I have understated the importance of the value added identity for conventional estimates of production relationships. This reply seeks to clarify the areas of agreement and disagreement. It suggests that the problems raised by the accounting identity are genuine and deserve to be more widely known, but Felipe and McCombie have sometimes exaggerated the scope of the argument.