论彼得·圣吉的管理哲学

彼得·圣吉是美国著名的管理学家。他的管理哲学从管理理论与管理实践、管理主体与管理客体、管理手段与管理目的、管理组织系统与管理环境之间的关系等四个维度全面揭示了管理科学的发展取向 ,深邃而富有内涵 ,值得我们研究和探讨     

Two-stage Huber estimation

In this paper we propose a new robust estimator in the context of two-stage estimation methods directed towards the correction of endogeneity problems in linear models. Our estimator is a combination of Huber estimators for each of the two stages, with scale corrections implemented using preliminary median absolute deviation estimators. In this way we obtain a two-stage estimation procedure that is an interesting compromise between concerns of simplicity of calculation, robustness and efficiency. This method compares well with other possible estimators such as two-stage least-squares (2SLS) and two-stage least-absolute-deviations (2SLAD), asymptotically and in finite samples. It is notably interesting to deal with contamination affecting more heavily the distribution tails than a few outliers and not losing as much efficiency as other popular estimators in that case, e.g. under normality. An additional originality resides in the fact that we deal with random regressors and asymmetric errors, which is not often the case in the literature on robust estimators.     

Generalized Laplacian approximations in Bayesian inference

This paper presents a new Laplacian approximation to the posterior density of η = g(θ). It has a simpler analytical form than that described by Leonard et al. (1989). The approximation derived by Leonard et al. requires a conditional information matrix R_η to be positive definite for every fixed η. However, in many cases, not all R_η are positive definite. In such cases, the computations of their approximations fail, since the approximation cannot be normalized. However, the new approximation may be modified so that the corresponding conditional information matrix can be made positive definite for every fixed η. In addition, a Bayesian procedure for contingency-table model checking is provided. An example of cross-classification between the educational level of a wife and fertility-planning status of couples is used for explanation. Various Laplacian approximations are computed and compared in this example and in an example of public school expenditures in the context of Bayesian analysis of the multiparameter Fisher-Behrens problem.     

RuCl2[P(C6H5)3]2(NH2CH2CH2NH2)催化苯乙酮加氢反应的研究

优化了以RuCl2[P(C6H5)3]2(NH2CH2CH2NH2)作催化剂催化苯乙酮加氢制备α-苯乙醇的反应条件,考察了反应温度、反应压力、碱的用量及不同的碱对反应的影响,得出了一个较好的反应条件.     

同工异曲的悲歌--《菊花的幽香》与《薄奠》之比较

英国小说大师劳伦斯创作的<菊花的幽香>和中国著名小说家郁达夫创作的<薄奠>具有异曲同工之处,他们分别以象征和写实的笔法描写了一个以男主人公的死亡为结局的家庭悲剧,并对各自社会的罪恶进行了揭露,因而具有进步意义,成为中英文学史上不可多得的佳作.     

对张学良联共抗日思想形成的几点思考

指出中华民族的千古功臣张学良将军,是中国共产党人的一位真正朋友。论述了张学良联共抗日的思想基础、形成及其实现联共抗日的途径。同时,对张学良联共抗日思想与行动进行了评析,从而为学术界进一步研究和评价张学良将军与中国共产党人的关系提供了借鉴。     

行政合同特权探析

行政合同特权是行政合同的一个重要内容 ,它基于行政合同的行政性以及公共利益优位理念而产生。无论是国外还是国内 ,理论抑或实践 ,行政合同特权都是现实存在的。平衡行政合同特权 ,回归“合同”性质是行政合同特权与契约精神碰撞与协调的归宿。深入研究行政合同特权理论对我国行政合同制度的构建以及行政合同立法都有重要的理论和现实意义     

推进我国高新技术产业发展的对策思考

20世纪 80年代中期以来 ,我国高新技术产业有了长足的发展 ,取得了较大成就。但总的来看 ,仍处于低级阶段 ,在不少领域与发达国家相比存在很大的差距。应采取切实可行的对策 ,调动各方面的积极性 ,以推进我国高新技术产业的发展。     

论素质教育和创新教育

论述了素质教育的基本概念 ,素质教育目标的层次性 ,创新教育是素质教育的重点 ,对大学生进行素质教育的具体要求。     

英语听力教学与英美文化背景知识的传授

着重讨论听力理解与文化背景知识之间的关系 ,阐明了学生缺乏背景知识对于听力理解的影响 ,并提出了在听力教学中传授英美文化背景知识的方法。