Monitoring recessions: A Bayesian sequential quickest detection method

Monitoring business cycles faces two potentially conflicting objectives: accuracy and timeliness. To strike a balance between these dual objectives, we propose a Bayesian sequential quickest detection method to identify turning points in real time with a sequential stopping time as a solution. Using four monthly indexes of real economic activity in the United States, we evaluated the method’s real-time ability to date the past five recessions. The proposed method identified similar turning-point dates as the National Bureau of Economic Research (NBER), with no false alarms, but on average, it dated peaks four months faster and troughs 10 months faster relative to the NBER announcement. The timeliness of our method is also notable compared to the dynamic factor Markov-switching model: the average lead time was about five months when dating peaks and two months when dating troughs.     

功能点分析方法在建筑工程监督巡查项目开发中的应用

软件项目的度量是软件项目管理的一个重要问题。为在度量中取得合理、有效的结果,研究了功能点分析法在软件项目管理中的应用。首先介绍了功能点分析法的原理,然后结合一个具体的项目——建筑工程监督巡查系统,详细阐述了功能点分析法的运用过程。实践表明,取得了很好的效果。     

西方对外直接投资理论的演进及评述

对外直接投资反映了一个经济体中某一居民实体(直接投资者)在另一经济体的某一企业(直接投资企业)中获得永久利益的目的,同时这种永久利益意味着直接投资者和直接投资企业之间存在着一种长期的关系以及对该企业的管理产生了重大影响。西方学者对该问题的研究主要按照三条路径演进:渐进的演化路径、间断的演化路径和经过临界点的演化路径。本文主要将西方对外直接投资理论中目前引用率较高的观点分别按照其演进方式进行归纳、介绍和评价,认为有必要在学习西方对外直接投资理论的基础上,结合我国的经济实践,建立适合中国国情的对外直接投资理论。     

刘易斯拐点到来会抬高通货膨胀水平吗

刘易斯拐点是工业化发展进程中,劳动力供给由无限转为有限,劳动力价格随之上涨的时间点。部分学者认为,我国刘易斯拐点的到来,将通过推高工资水平带来物价水平的整体提升。本文通过对二十世纪中叶以后经过快速的工业化发展、走过刘易斯拐点的日本、韩国、新加坡三个国家的通货膨胀水平和实际工资水平进行实证分析,研究发现实际工资上涨并不一定能够推高整体物价水平,中国的情况也是如此,此轮通货膨胀主要由原材料价格上涨、市场流动性过剩引起,需要及时转变经济发展方式,加快经济结构转型,并尽快建立多层次资本市场,丰富融资渠道。     

Equilibrium in a reinsurance market with short sale constraints

Summary. This paper deals with the existence of equilibrium in a dynamic reinsurance market with short sale constraints, driven by a marked point process, as studied in Bernis and Jouini (2001). We use the set of reinsurance treaties as consumption set, which is the positive orthant of some Banach lattice that can be identified to a space of martingales, . The properness of preferences is a key assumption for us to prove the existence of an equilibrium. We provide a sufficient condition for the preferences to be proper in term of loading factor of the reinsurance premium. Received: June 15, 2000; revised version: May 17, 2001     

商业银行核心竞争力的三维评价研究

研究商业银行的核心竞争力评价问题对繁荣我国的金融市场具有重要意义。首先构建了评价商业银行核心竞争力的指标体系，采用系统的思想提出了一种分析核心竞争力的三维评价模型，并给出了综合评价核心竞争力的最优点法。在此基础上深入讨论了该模型的投影操作。     

Five dimensions of the uncertainty–disagreement linkage

We analyze the relationship between forecaster disagreement and macroeconomic uncertainty in the Euro area using data from the European Central Bank’s Survey of Professional Forecasters for the period 1999Q1–2018Q4 and find that disagreement is generally a poor proxy for uncertainty. However, the strength of this link varies with the dispersion statistic employed, the choice of either the point forecasts or the histogram means for calculating disagreement, the outcome variable considered and the forecast horizon. In contrast, distributional assumptions do not appear to be very influential. The relationship is weaker in subsamples before and after the outbreak of the Great Recession. Accounting for the forecasters’ entry to and exit from the survey has little impact on the results. We also show that survey-based uncertainty is associated with overall policy uncertainty, whereas forecaster disagreement is related more closely to the expected fluctuations on financial markets.     

微波带状线低通滤波器的设计制作与性能改善

讨论了带状线低通滤波器因实际制作的导带宽度发生变化引起滤波器性能下降时,如何改善滤波器性能的方法。我们采用惠普公司ＥＥＳＯＦ软件,对滤波器的结构和电气参数和分别作了灵敏度分析,以此为改善滤波器性能的依据。经实验对比,改进后的滤波器性能有了明显改善,且性能稳定。     

结构变化下中国股市单位根现象研究

本文使用含结构变化的单位根检验理论来分析上证综指、上证A指、上证B指和深证成指日收盘价格对数过程的特征.本文的实证结果表明,上证综指、上证A指、上证B指和深证成指日收盘价格对数过程存在结构变化,结构中断点位置表明交易费用调整事件和利率调整事件对A股市场有较深刻影响,这和一些文献将"1995年01月01日实行T 1交易制度"或"1996年12月16日实行涨跌停板"作为分界点有所不同;在考虑结构变化因素后,深市的有效性不如沪市.     

汇市干预的理论与实证分析——来自日本的经验

本文以颇具代表性的日本货币当局外汇干预的模式为参照系,对当今世界资金规模最大、金融领域最前沿的外汇市场从理论和实践的角度进行论证,旨在为未来我国人民币国际化后所必将产生的外汇干预等相关问题提供具有实际意义的建议与理念。