社会主义市场经济与共产党人的人生价值观

在社会主义市场经济条件下 ,共产党人要按照“三个代表”的要求 ,树立适应社会主义市场经济要求的人生价值观     

马克思的意识形态理论及文学思想探析

马克思意识形态理论是革命的、实践的批判理论 ,它以最终“跳出意识形态”为指向。马克思的文学批评是其意识形态批判的重要组成部分。马克思文学思想的实质是力图将文学作为在资本主义世界宣扬无产阶级意识 ,以激发革命 ,彻底“跳出意识形态”的重要途径之一。     

师专文科学生科学素质的调查与分析

通过“科学态度与科学方法”的教学、问卷调查、小组座谈、指导学生撰写论文等多种方式 ,对师专文科大学生的科学素质进行了调查 ,并对调查结果进行了分析 ,提出了加强这方面工作的建议     

论企业家营销观念的误区

作为一名企业家,面对复杂多变的市场,其科学的营销观念的树立是经营制胜的前提,营销观念误区的防范对企业生存与发展至关重要。企业家营销观念存在着十大误区。     

Characterizations of generalized mixtures of geometric and exponential distributions based on upper record values

Let X _{U (1)} < X _{U (2)} < … < X _{U ( n )} < … be the sequence of the upper record values from a population with common distribution function F. In this paper, we first give a theorem to characterize the generalized mixtures of geometric distribution by the relation between E[(X _{U ( n +1)}–X _{U ( n )})²|X _{U ( n )} = x] and the function of the failure rate of the distribution, for any positive integer n. Secondly, we also use the same relation to characterize the generalized mixtures of exponential distribution. The characterizing relations were motivated by the work of Balakrishnan and Balasubramanian (1995). Received: March 31, 1999; revised version: November 22, 1999     

关于建设中原城市群沿京广铁路大农业产业带的构想

打造北起新乡、南至漯河,包括郑州都市农业圈在内的沿京广铁路大农业产业带,使之成为与郑洛工业走廊相呼应的产业密集区,既是推进河南农业现代化、提升农产品竞争力的需要,也是发挥优势、增强实力、奠定城市群和中原崛起的产业基础的要求。     

The Affiliation Effect in First‐Price Auctions

We study the monotonicity of the equilibrium bid with respect to the number of bidders n in affiliated private‐value models of first‐price sealed‐bid auctions and prove the existence of a large class of such models in which the equilibrium bid function is not increasing in n. We moreover decompose the effect of a change in n on the bid level into a competition effect and an affiliation effect. The latter suggests to the winner of the auction that competition is less intense than she had thought before the auction. Since the affiliation effect can occur in both private‐ and common‐value models, a negative relationship between the bid level and n does not allow one to distinguish between the two models and is also not necessarily (only) due to bidders taking account of the winner's curse.     

现代中国文学理念的多重缘起

本文通过对六组不同知识分子关于文学的看法或是文学史的勾勒,说明了现代中国文学理念多重缘起的看法以及由此所衍生的辩证意义。该观点试图重申中国文学永远不必定为一尊,其发生发展乃是诸般合力所致的见解。所谓多重其所见证的不仅是同时代不同观念间的众声喧哗与龃龉对话,同时也是不同时空语境下,东西话语、过去之我与现在之我、前驱与后学之间的借鉴、增益、证明、赓续,甚至于反叛。惟其如此,我们才能在这个所谓的全球化时代,在面临西方文学文化理论的强压之下,懂得使用什么样的话语来回应西方学界或是广义的东西方学界的不同挑战。     

从“钱学森之问”看当代中国教育的缺失

＂为什么我们的学校总是培养不出杰出人才＂,＂钱学森之问＂一时成为全国各界关注的焦点。通过简单解析＂钱学森之问＂,分析中国教育现状,给出如下观点：高校体制改革,开设创新教育课程,创新思维模式培养、渗透,是解决问题直接而较简单的办法,但仅是一种治标不治本的办法;正确的社会价值取向和良好的社会制度导向将是解决问题的有效策略,具有深远意义;但从教育的本质来看,从人类心智的发展规律来看,学术自由,启发心智培养才是真正以人为本的解决问题之道。     

Fitting Generalized Hyperbolic processes - New insights for generating initial values

The fitting of Lévy processes is an important field of interest in both option pricing and risk management. In literature, a large number of fitting methods requiring adequate initial values at the start of the optimization procedure exists. A so-called simplified method of moments (SMoM) generates by assuming a symmetric distribution these initial values for the Variance Gamma process, whereby the idea behind can be easily transferred to the Normal Inverse Gaussian process. However, the characteristics of the Generalized Hyperbolic process prevent such an easy adaption. Therefore, we provide by applying a Taylor series approximation for the modified Bessel function of the third kind, a Tschirnhaus transformation and a symmetric distribution assumption, a SMOM for the Generalized Hyperbolic distribution. Our simulation study compares the results of our SMoM with the results of the maximum likelihood estimation. The results show that our proposed approach is an appropriate and useful way for estimating Generalized Hyperbolic process parameters and significantly reduces estimation time.