Nonsynchronous Trading Model and Return Analysis

Nonsynchronous trading is one of the hot issues in financial high-frequency data processing. This paper extends the nonsynchronous trading model studied in [1] and [2] for the financial security, and considers the moment functions of the observable return series for the extended model. At last. the estimators of parameters are obtained.     

A Study of Evaluation System of Restricting Factors in Training Students‘ Qualities

This paper studies evaluation system of restricting factors in training students' qualities by modern mathematical method of analysis hierarchy process and principal factor analysis, and to build up a mathematical model of evaluation system.     

A Case－Based System for Construction Project Risk Management

1　IntroductionIn the field of construction,project risk management is a complex and important task.Therefore,it is very important for construction project managers to consider all possiblerisk factors affecting a given construction project. Furthermore,they should examine howthese factors interact in the decision- making process and how to balance subjective beliefsand information in identifying risk and uncertainties,and information,and takingcorrective actions to control the identified risk…     

在睡眠的迷宫中——关于做梦的九个问题

梦是可以相信的吗 ?数千年以来 ,人们很慎重其事地将自己的梦当作纪念物保存下来。现代人假设 ,洞穴壁上的作品、《圣经》中的故事不少是先人关于梦的记录。梦还是心理学研究的主要内容 ,人们尝试着根据自己理解的程度去解释梦。原始人以为他们在睡眠时是将灵魂与身体分离的———此时的他们来到了一个生活着相象中的人和动物的精神世界。在《圣经》和《可兰经》中 ,梦常常被当作上帝的声影。古埃及法老做的“七丰收及七饥荒之梦”就是这种预知梦的典型。古代文明期间有专事解梦的人 ,他们被称作占梦者 ,《圣经》里记载的预言者达尼尔就是当…     

The Existence of Positive Bounded Entire Solutions of Second Order Quasilinear Elliptic Equations

In this paper we are concerned with the existence of positive entire solutions of second order quasilinear elliptic equations of the type div(|Du|p-2Du)+f(x,u)=0, x∈RN, (1) where f(x, u) is a continuous function on RN×(0,∞). This problem appears in the study of non-Newtonian fluids and non-Newtonian filtration. The quantity p is a characteristic of the madium. Media with p>2 are called dilatant fluids and those with p<2 are called pseudoplastics. If p=2, they are Newtonian fluid. In the present paper we give new sufficient conditions which ensure the existence of positive entire solutions of (1).When p=2, the related results have been obtained by [1,2]. Our theorem for existence complement and extent to the results by [1,2].     

Relation Entropy and Transferable Entropy Think of Aggregation on Group Decision Making

1　 IntroductionThere are many methods in studying uncertainty,and among them the sets pair analysis isa new method. It is used widely in many fields,such as behavior science,social science,managementscience and so on,and the effectis especially betterin decision making.″Setspair″means the combination of two sets having some relation.In the view of systemscience,any two parts of system can be considered as a sets pair in certain condition,suchas system and circumstance,system and people,betw…     

20世纪70年代的中国

美国电影《阿甘正传》中有一句话让我们记忆深刻,多年不忘。故事说得是20世纪70年代初的事情,阿甘作为美国乒乓球队员访华,当他回国后,记者问他对中国的最深印象是什么,阿甘回答说:他们什么也没有。也就是说中国人非常贫穷。这句话深深地刺痛着我们的自尊心。作为20世纪60年代出生的人,我们亲身经历了那段困难的时期,虽然儿时的印象里家家户户都不富裕,但是我们并没有穷困不堪的感觉,精神生活也是非常地充实。当90年代我们成人时,却听到一个外国人对自己儿时的中国那种评价,的确心里很不舒服。     

给所有的人受教育机会

联合国教科文组织副总干事强调指出,西方各国政府和国家元首行动起来,使各自国家用于支持穷国发展教育的开支能有实质性的增长。