浅谈我国古代文艺作品中的影射技法

影射 ,作为一种文学技巧 ,最先出现在《诗经》 ,日后由于意识形态变化的原因 ,并在儒家文学观的指引下 ,逐渐推广到辞赋、散文、小说、词曲和戏剧所有文学领域 ,表现形式也由单一的比喻象征发展到多种类型 ,形成姿态横生、形式大备、羽翼丰满的艺术手段     

Assessing goodness-of-fit of categorical regression models based on case-control data

Demonstrated equivalence between a categorical regression model based on case‐control data and an I‐sample semiparametric selection bias model leads to a new goodness‐of‐fit test. The proposed test statistic is an extension of an existing Kolmogorov–Smirnov‐type statistic and is the weighted average of the absolute differences between two estimated distribution functions in each response category. The paper establishes an optimal property for the maximum semiparametric likelihood estimator of the parameters in the I‐sample semiparametric selection bias model. It also presents a bootstrap procedure, some simulation results and an analysis of two real datasets.     

Weakly implementable social choice rules

Previous investigations have shown that a social choice function which is partially implementable must be characterized by pervasive veto power. This paper investigates how much additional latitude in the design of social choice functions, and how much relief from this vetoers result, can be achieved by examining multi-valued social choice rules and relaxing the requirement of partial implementability to a requirement that we call weak partial implementability. We find that the power structures which characterize partially implementable social choice functions, including the veto properties, also characterize weakly partially implementable social choice rules. The conclusion is that invoking multi-valuedness and implementation of appealing social choice rules in strong Nash equilibria. Our results apparently exhaust the possibilities for implementation in strong Nash equilibrium. If any implementation possibility results are to be achieved, they can apparently come only by weakening the equilibrium requirement.     

论艺术设计专业表现技法的两种形式

艺术设计专业中的表现技法有多种。此文论述了素描点绘形式和色彩喷绘形式的表现技法。如果学生在实践中掌握了这门主要专业课程,就会为今后的电脑图形设计打下坚实的基础。     

李白与杜甫面面观

围绕李白与杜甫的生平行事及其诗歌创作,从八个层面进行对比论述,所谓“以诗证史,有裨于知人论世”。文中既综合了当代的研究成果,也提出了一些新的见解。     

基于利润的股票定价模型研究

股息现值模型 (Gordon model)、税后利润再投资有限增长模型 (Gordon and Gordon m odel)以及简化后的税后利润再投资有限增长模型 (Morris m odel)都无法为亏损公司的股票定价。根据弱有效市场假设 ,提出基于净利润的股票定价模型。该模型允许公司未来几年把全部或部分利润投资于盈利项目。利用该模型投资者可以计算不同类型上市公司股票的投资价值     

治理黄土高原必须抓住关键突破口

黄土高原是我国独特的地理区域,其水土流失严重,生态环境恶化,经济落后,问题很多,如何治理黄土高原一直是个难题。若能抓住关键突破口,如种树种草改善生态环境,防止水土流失,建设基本农田,解决粮食问题,开展多种经营,增加经济收入等,进行综合治理和开发,问题便将迎刃而解。     

《金融会计》教学必须走出的几个误区

《金融会计》课程的教学与近几年来金融业迅猛发展的趋势不相适应 ,在认识上、教学内容上和教学手段等方面存在种种误区     

Optimal scaling of Metropolis algorithms: Heading toward general target distributions

The authors provide an overview of optimal scaling results for the Metropolis algorithm with Gaussian proposal distribution. They address in more depth the case of high‐dimensional target distributions formed of independent, but not identically distributed components. They attempt to give an intuitive explanation as to why the well‐known optimal acceptance rate of 0.234 is not always suitable. They show how to find the asymptotically optimal acceptance rate when needed, and they explain why it is sometimes necessary to turn to inhomogeneous proposal distributions. Their results are illustrated with a simple example.     

《金属材料与热处理》教法探究

对如何在《金属材料与热处理》课堂教学中培养提高学生的学习能力,从动力、基础及主要环节与关键问题等方面作了粗浅的研究与探讨。