江泽民关于选拔和培养优秀中青年干部的辩证思想

江泽民同志于 2 0 0 0年 6月在全国党校工作会议上的讲话 ,充满了实事求是的精神和深刻的辩证思维风格 ,体现了鲜明的时代特色。他对新时期干部德才基本要求所作出的新的规定 ,是对马克思主义人才理论的极大丰富。他提出的“重发现同时重培养”的原则、“使用、培养同一论”以及“德才具体说”、“辩证的台阶、资历观”等 ,是对传统的人才理论的突破和对马克思主义人才学说的丰富和发展     

均值绝对偏差资产组合选择模型的算法

对均值绝对偏差模型进行了简化,并利用一种旋转算法求解。这种算法比单纯形算法的计算简便,且计算量更小。利用上海和深圳股市1 072支股票70期周末收盘价所作的实验结果表明,对于资产无上界限制的模型,计算20个不同最优投资组合需要1 274次旋转运算,上界为10%时需要1 570次旋转运算,每 次旋转运算约需1 14171次加法和乘法运算。     

国有企业经营者选拔中的难题及解决思路

民营企业的创业过程与企业家形成过程是统一的,而国有企业往往是先有企业后有经营者的。从理论和实践上看,国有企业经营者选拔中存在诸多难题,它体现在风险承担的不对称、信息缺陷严重、选拔标准在实践中扭曲、经营者身份的准官员化、能力信号显示与专用性知识投资之间的突出矛盾上。如果不能很好地解决这些问题,任何意义上的国有企业改革都不可能取得实效。为此,要通过对国企准确定位,区分不同类型的经营者,政府主动"淡出"选拔过程与相机干预相结合,发挥机构投资者的作用及发展完善的经理市场来加以优化。     

从战略高度切实加强对领导干部的主动监督

本文主要观点是:建立选拔任用干部的监督机制是我国目前亟需解决的重要问题,它关系到是否能将有中国特色的社会主义事业不断推向前关键不是出了问题以后的解决方法,而是要加强对干部的主动监督,防止干部腐败变质.千秋大业在于用人,在选拔干部时应遵循已制定的科学规范,并从几方面加强监督,在工作中不断完善监督机制,同时要强调对干部的教育培训,并将其作为实施监督的基础性工作.     

SHOULD WE ESTIMATE THE PROBABILITY OF CORRECT SELECTION?

Various authors, given k location parameters, have considered lower confidence bounds on (standardized) dserences between the largest and each of the other k - 1 parameters. They have then used these bounds to put lower confidence bounds on the probability of correct selection (PCS) in the same experiment (as was used for finding the lower bounds on differences). It is pointed out that this is an inappropriate inference procedure. Moreover, if the PCS refers to some later experiment it is shown that if a non-trivial confidence bound is possible then it is already possible to conclude, with greater confidence, that correct selection has occurred in the first experiment. The short answer to the question in the title is therefore ‘No’, but this should be qualified in the case of a Bayesian analysis.     

An alternative to model selection in ordinary regression

The weaknesses of established model selection procedures based on hypothesis testing and similar criteria are discussed and an alternative based on synthetic (composite) estimation is proposed. It is developed for the problem of prediction in ordinary regression and its properties are explored by simulations for the simple regression. Extensions to a general setting are described and an example with multiple regression is analysed. Arguments are presented against using a selected model for any inferences.     

Improved model selection criteria for SETAR time series models

The purpose of this paper is threefold. First, we obtain the asymptotic properties of the modified model selection criteria proposed by Hurvich et al. (1990. Improved estimators of Kullback-Leibler information for autoregressive model selection in small samples. Biometrika 77, 709–719) for autoregressive models. Second, we provide some highlights on the better performance of this modified criteria. Third, we extend the modification introduced by these authors to model selection criteria commonly used in the class of self-exciting threshold autoregressive (SETAR) time series models. We show the improvements of the modified criteria in their finite sample performance. In particular, for small and medium sample size the frequency of selecting the true model improves for the consistent criteria and the root mean square error (RMSE) of prediction improves for the efficient criteria. These results are illustrated via simulation with SETAR models in which we assume that the threshold and the parameters are unknown.     

基于旅西日本游客旅游选择行为的西安旅游市场分析

根据在全国六大旅游热点城市所做的旅游市场调查的数据结果，对旅西日本游客的旅游选择行为进行了研究，同时进一步有针对性地对西安日本客源市场进行了SWOT分析，在此基础上，对西安旅游业的发展提出了相关对策建议。     

基于TOPSIS理论的企业供应商选择应用

供应链管理已经成为企业获取竞争优势的手段,供应商选择是企业构建供应链体系的重要内容。TOPSIS是一种简单易行的多因素选优的理论方法,它利用熵来确定评价指标的权重,避免了在确定评价指标权重时主观因素的影响,为公司的供应商选择提供了一种科学、量化、高效的手段。文章回顾了供应商选择的理论现状,介绍了TOPSIS理论模型和利用它进行供应商选择的步骤,通过对典型企业的深入调研,阐述了该企业如何应用TOPSIS进行供应商选择。     

利用光敏核不育性进行水稻轮回选择的程序探讨

本文对利用光敏核不育性进行水稻轮回选择进行了探讨。提出基本轮回选择方案和综合轮回选择方案。基本轮回选择方案是以一个光敏核不育材料为母本与多个亲本组配构成轮回选择的综合群体,而其后按常规轮回选择法进行育种的方案。综合轮回选择方案是以两个或两个以上的光敏核不育材料作为母体与多个亲本组配,在 F_2代群体中不同质源的优良植株相互交配构成综合群体,其后按基本方案进行的轮回选择。