A note on the existence of unique equivalent martingale measures in a Markovian setting

Simple sufficient conditions for the existence of a unique equivalent martingale measure are provided. Furthermore, these conditions give us a handle on situations where an equivalent martingale measure cannot exist. The existence of a unique equivalent martingale measure is of relevance to problems in mathematical finance. Two examples of models for which the question of existence was unresolved are studied. By means of our results existence of a unique equivalent measure up to an explosion time is proved.     

Why I am a Psychology Major: An Empirical Analysis of Student Motivations

The underlying “architecture of the decision to pursue a degree in psychology was quantified using the Method of Sorting technique to identifying the critical issues necessary to make this choice. Multidimentsional scaling procedures were employed to construct a three-dimensional map representing the relationships between reasons for selecting psychology as a major. Freshman and senior psychology majors (N = 165) from a regional university and a large research-based institution rated the relative importance of items in their decision-making process. Hierarchical clustering procedures revealed seven different groups of students. Although significant differences associated with class standing were not found, institutional affiliation did influence cluster composition. Reflecting local emphases, students at the regional institution had a greater interest in Counseling Psychology, whereas those at the research-based school focused on Clinical Psychology. This semantic map and the associated item clusters arising from psychology student data provides an empirical basis for, amongst other things, course selection, faculty-initiated program design or revision, strategic niche marketing, and student retention.     

The Bell Curve in Psychological Research and Practice: Myth or Reality?

The expression “the bell curve” designs both a kind of statistical distribution and the title of a famous and controversial book by Herrnstein and Murray. The first is so attractive that the second refers to it to give more credibility to its questionable theories on intelligence. The point is that, during the 20th century, the bell curve has assumed a more and more important role in psychological research and practice and have become both a reality and a myth. In the first case (reality) we can assist to appropriate applications of a real useful statistical concept. In the second (myth) we can have two kinds of attitudes: one attitude is typical of those researchers who search for normality in all their data and variables, just as Parsifal used to search for the Holy Graal (we call this “the Parsifal attitude”); the other is typical of those researchers who give normality for granted and act as if it were a Platonic Idea (we call this “the Plato attitude”). The article discusses the role of the normal distribution in psychological research and practice and shows how it can be dangerous to treat the bell curve as a God or an Idol.     

倾销幅度测算中的偏颇之处

倾销幅度测算是裁定倾销以及实施反倾销措施的依据和基础。然而,具体操作过程中存在的偏颇之处,使得调查结果总是倾向发现“倾销幅度”,从而裁定倾销存在。本文以倾销幅度测算过程中的不合理之处为分析对象,举例说明了在很多情况下,原本不存在的倾销行为,是如何在现行的规定下被测算出了“倾销幅度”。     

基于云计算与物联网技术的数据挖掘

在科学技术快速发展的今天,信息通信行业已经与我们的日常生活完全融为一体,并且推动了整个社会的发展,所以在科学技术快速进步的过程中,信息通信相关技术也在不断发展,其中,基于云计算的物联网发展越来越受到人们的重视。论文对基于云计算的物联网数据挖掘模式进行分析及探讨,从而为互联网数据挖掘技术发展提供相应的参考。     

云数据中心网络虚拟化技术的实现路径

当今社会,随着科学技术的迅猛发展,信息技术实现了持续快速发展。在大环境的影响下,云计算与网络虚拟化技术应运而生。该技术的产生和发展促使云数据中心网络的变革与发展成为新一轮技术革命的核心内容之一。当前,IT行业对数据中心网络的需求越来越大。基于此,论文论述了云数据中心网络虚拟化技术的实现路径。     

浅析资本弱化与外资避税

随着现代资本结构理论的发展,国内外企业都在学习如何在实务中对其加以灵活应用,使企业价值最大化.资本弱化就是这样一种应用,其目的在于企业通过资本结构安排,改变其纳税义务,起到避税的作用.目前,来自发达国家的外资企业在这一避税手法的使用上已达到了十分成熟的阶段,再加上我国现行税制框架尚未对资本弱化进行识别、规范和控制,造成了我国大量的税收利益流失.另外,在我国已逐渐认识到问题的紧迫性的情况下,如何进行监管和控制也是一个很大的技术难题.     

如何界定反倾销调查中的"生产成本"概念

“生产成本”是反倾销调查中的核心问题。该文通过国际反倾销法“生产成本”概念的界定，分析了反倾销调查中企业“生产成本”的差异，提出了按照国际惯例进行调整的方法，以及为反倾销调查取证提供的承诺。     

The Relevance of Stock and Flow-Based Reporting Information In Assessing the Likelihood of Emergence from Corporate Financial Distress

A number of recent studies have shown that earnings information is less useful and value relevant when firms are financially troubled. This finding has given rise to the consideration of alternatives. In this paper, we examine the contributions of book value-based proxies (normal earnings and abandonment value) and flow-based proxies (earnings and operating accruals) to the assessment of the likelihood of emergence from financial distress. Our prior reasoning is that while book value-based proxies may provide information about potential future cash resources, flow-based proxies, because they capture the progress of reorganization efforts underway, as opposed to mere potential, should be relatively more useful in assessing the likelihood of emergence from distress. Our findings are consistent with this explanation. We document that the primary predictors of emergence are flow-based proxies—in particular, cash from operations, net of earnings.     

新常态下的创新驱动——对创新服务体系的认识

党 的十八届五中全会报告指出，坚持创新发展，必须把创新摆在国家发展全局的核心位置，不 断推进理论创新、制度创新、科技创新、文化创新等各方面创新。我国经济发展进入了新常 态阶段，认识新常态、适应新常态、引领新常态，是当前和今后一个时期我国经济发展的大 逻辑。改革开放30年来，我国的创新能力有了大幅度提高，但是仍存在影响创新能力发展的 诸多障碍，尤其是创新服务体系还严重缺失。我国在加快科技与经济融合的进程中，需要重 视创新服务体系建设，把发展基点放在创新上，形成促进创新的体制架构。在大众创业、万 众创新的大形势下，打造创新创业集成服务商，支持创新平台、孵化载体建设，促进专业创 新服务机构的发展。