文化转向:大学毕业生城市流动的新逻辑

西方城市人口增长的文献在过去几十年间经历了"文化转向":工作就业等经济因素让位于文化休闲等消费因素成为人口流动的主要吸引力。城市人口流动的"文化转向"在中国同样明显,尤其表现在大学毕业生群体当中。城市在大学毕业生眼中已经不再是简单的工作地点。城市是学习机器,是娱乐机器,越来越多的大学毕业生在城市流动选择中追求价值实现,表达自我,体验生活和分享梦想。青年大学毕业生是城市人口流动最活跃的群体。他们的城市流动目的地选择直接影响到城市社会、文化经济的发展。     

Inference and Decision Making for 21st-Century Drug Development and Approval

ABSTRACT

The cost and time of pharmaceutical drug development continue to grow at rates that many say are unsustainable. These trends have enormous impact on what treatments get to patients, when they get them and how they are used. The statistical framework for supporting decisions in regulated clinical development of new medicines has followed a traditional path of frequentist methodology. Trials using hypothesis tests of “no treatment effect” are done routinely, and the p-value < 0.05 is often the determinant of what constitutes a “successful” trial. Many drugs fail in clinical development, adding to the cost of new medicines, and some evidence points blame at the deficiencies of the frequentist paradigm. An unknown number effective medicines may have been abandoned because trials were declared “unsuccessful” due to a p-value exceeding 0.05. Recently, the Bayesian paradigm has shown utility in the clinical drug development process for its probability-based inference. We argue for a Bayesian approach that employs data from other trials as a “prior” for Phase 3 trials so that synthesized evidence across trials can be utilized to compute probability statements that are valuable for understanding the magnitude of treatment effect. Such a Bayesian paradigm provides a promising framework for improving statistical inference and regulatory decision making.     

Multi-valued strategy-proof social choice rules

In this paper we introduce a new definition of strategy-proofness for multi-valued social choice correspondences. We prove two Gibbard-Satterthwaite type results for strategy-proof social choice correspondences. These results show that allowing multiple outcomes as social choices will not necessarily lead to an escape from the Gibbard-Satterthwaite impossibility theorem. Received: 24 January 2001/Accepted: 19 March 2001     

英美TEFL的历史及其特征

本文简述了英美两国把英语作为外语教学(TEFL)的历史,并就英美两国的一些语言学家对于TEFL的贡献作了较详尽的描述。本文还谈及英美两国TEFL的历史特征,其中最重要的是语言学理论的研究在TEFL中的应用。     

2004年国际石油价格高涨解析

2004年以来,国际石油价格持续高涨,给世界经济增长带来了影响,也给中国的经济和社会发展带来了深远影响。本文以实证研究的方法,描述了国际石油价格高涨的过程,分析了国际石油价格高涨带来的影响,挖掘了国际石油价格高涨的根本原因。     

人的视觉心理艺术浅析

本文就人的视觉在对事物的色彩、形式、形状、光和影等诸方面,所产生的心理艺术影响作了剖析。并论述了视觉心理在电影、绘画等艺术创作中的重要性。从而激励人们更好地关注和创作美的作品。     

对我国高校推进双语教学模式的思考

总体上看,全国各地高校在双语教学模式试点及具体实践中取得了显著的成绩,双语教学模式推广前景良好。但是,应该看到在推进双语教学模式的实践过程中,也出现了一些需要我们认真分析和思考的问题,本文首先针对我国高校双语教学模式的现状及发展特征展开分析,进而提出了相应的对策思考。