Reconsidering the Relationship between Inflation and Relative Price Variability

It has long been popularly believed that the relationship between inflation and relative price variability (RPV) is positive and stable. Using disaggregated CPI data for the United States and Japan, however, this study finds that the relationship is neither linear nor stable over time. The overall relationship is approximately U‐shaped around a nonzero threshold inflation rate. RPV therefore changes not with the inflation rate per se, but with the deviation of inflation from the threshold inflation rate. More importantly, the relationship is by no means stable over time but instead varies significantly in a way that coincides with regime changes of inflation or monetary policy. The relationship was positive during the period of high inflation of the 1970s and the early 1980s, as has been documented by a number of previous studies, whereas it takes a U‐shape profile during the Great Moderation. The results are robust to the use of core inflation, which excludes the traditionally volatile prices of food and energy. This paper then presents a modified version of the Calvo‐type sticky price model to describe the observed empirical regularities. Simulation experiments show that the modified Calvo model fits the data well, and that the underlying relationship hinges upon the degree of price rigidity, which is systematically related to inflation regime. For countries and periods with low inflation rates, the relationship takes a U‐shape as price adjustment is more sticky. In a high‐inflation environment, when price setting becomes more flexible, the U‐shaped profile vanishes.     

社会对自闭症者的认知度调查

"自闭症"(也叫孤独症)是发生于儿童早期的一种广泛性发育障碍,诊断概念由美国医生Leo Kanner于1943年提出。在我国,1982年南京脑科医院儿童精神健康研究中心陶国泰医生在专业文献上报道了4例自闭症,首次在中国引入这一概念。自闭症在我国被人们所熟知的时间很短,社会对其了解多少,人们对自闭症者的接纳程度又如何呢?为此,笔者就自闭症在社会上的认知度做了一份调查问卷,以期为加大自闭症的社会支持力度提供一定的帮助。     

Litteraturanmeldelse

This article examines the notion of distortion of copulas, a natural extension of distortion within the univariate framework. We study three approaches to this extension: (1) distortion of the margins alone while keeping the original copula structure; (2) distortion of the margins while simultaneously altering the copula structure; and (3) synchronized distortion of the copula and its margins. When applying distortion within the multivariate framework, it is important to preserve the properties of a copula function. For the first two approaches, this is a rather straightforward result; however, for the third approach, the proof has been exquisitely constructed in Morillas (2005). These three approaches unify the different types of multivariate distortion that have scarcely scattered in the literature. Our contribution in this paper is to further consider this unifying framework: we give numerous examples to illustrate and we examine their properties particularly with some aspects of ordering multivariate risks. The extension of multivariate distortion can be practically implemented in risk management where there is a need to perform aggregation and attribution of portfolios of correlated risks. Furthermore, ancillary to the results discussed in this article, we are able to generalize the formula developed by Genest &; Rivest (2001) for computing the distribution of the probability integral transformation of a random vector and extend it to the case within the distortion framework. For purposes of illustration, we applied the distortion concept to value excess of loss reinsurance for an insurance policy where the loss amount could vary by type of loss.     

我国上市公司会计信息失真的原因及对策探讨——基于经济学角度分析

目前我国上市公司会计信息披露中存在较多问题,上市公司散布虚假信息、欺诈投资者的现象屡屡发生。本文试从经济学角度对会计信息的披露进行研究,通过构建博弈模型,分析会计信息失真的原因,并提出解决问题的方法。     

关于美国轮胎特保案的反思

美国金融危机蔓延导致全球经济出现衰退，贸易保护主义逐渐抬头。2009年9月发生的美国轮胎特保案就是典型的例子。中国企业应该加快推进产业结构升级和国内市场拓展，积极开展区域性贸易合作，实现出口多元化，积极发挥行业协会规范价格，以“特保案”为契机，通过增强国际竞争优势和挖掘国内市场潜力，实现对贸易保护主义的有效突围。     

重要性水平在自创商誉处理中的运用

知识经济时代，自创商誉作为企业价值的组成部分，对企业发展的影响深远，然而如此具有高价值相关性的信息却被排除在财务报表之外。文章将重要性水平运用于自创商誉的处理中，以自创商誉的构成因素——品牌为例测算了品牌资产对企业的价值贡献度，然后判断其重要性水平。高于重要性水平的企业信息需要披露给信息使用者，这样便于将重要的自创商誉信息传递给信息使用者。     

私营企业会计信息失真表现刍议——以广东A公司为例

伴随着我国经济体制改革的不断深化与发展,会计信息已经成为政府部门、投资者、债权人等了解与掌握企业财务状况、经营成果和现金流量的重要资源,日益受到社会的重视。作为一支新兴的、充满活力的经济力量,私营企业提供的会计信息对经济的发展起着不可低估的作用。     

私营企业会计信息失真表现刍议——以广东A公司为例

伴随着我国经济体制改革的不断深化与发展,会计信息已经成为政府部门、投资者、债权人等了解与掌握企业财务状况、经营成果和现金流量的重要资源,日益受到社会的重视。作为一支新兴的、充满活力的经济力量,私营企业提供的会计信息对经济的发展起着不可低估的作用。     

浅析火灾自动报警系统使用中存在的问题

本文通过对城市现有的一些现代化建筑内的火灾自动报警系统的现状以及将来发展的趋势进行分析,找出对火灾自动报警系统使用、管理、维修以及重视程度等方面的弊端,提出一点相关的解决办法。