Does Corporate Diversification Destroy Value?

We analyze several hundred firms that expand via acquisition and/or increase their number of business segments. The combined market reaction to acquisition announcements is positive but acquiring firm excess values decline after the diversifying event. Much of the excess value reduction occurs because our sample firms acquire already discounted business units, and not because diversifying destroys value. This implies that the standard assumption that conglomerate divisions can be benchmarked to typical stand-alone firms should be carefully reconsidered. We also show that excess value does not decline when firms increase their number of business segments because of pure reporting changes.     

从汇率制度视角看我国商业银行的流动性过剩

从汇率制度角度透视我国当前的商业银行流动性过剩现象,目的在于为经济金融的进一步开放提供理论依据和决策参考。本文通过对“三元悖论”理论的解读和1998～2006年各季度数据的实证检验,揭示了我国商业银行流动性过剩与汇率制度之间存在密切相关性,即在我国现行的汇率制度下,外汇储备的不断增加直接导致了商业银行存差的扩大,造成金融系统乃至整个社会的流动性过剩。基于上述研究,作者提出了如下相关建议:完善我国汇率形成的市场机制,培育相对均衡汇率;深化我国外汇管理体制改革,有序开放资本市场;汇率制度改革要与其他政策改革协调配合。     

我国商业银行业公司治理结构与经营绩效的实证研究

通过对8家股份制商业银行的公司治理结构与经营绩效的关系做回归分析,结果显示:经营绩效与董事会规模正相关;与第一大股东持股比例负相关;与前5大股东控制权分散度正相关。因此,国有商业银行应当适度增大董事会规模、明晰产权关系、强化监事会职能、加强管理层激励与信息透明度。     

Valuation of vulnerable American options with correlated credit risk

This article evaluates vulnerable American options based on the two-point Geske and Johnson method. In accordance with the Martingale approach, we provide analytical pricing formulas for European and multi-exercisable options under risk-neutral measures. Employing Richardson’s extrapolation gets the values of vulnerable American options. To demonstrate the accuracy of our proposed method, we use numerical examples to compare the values of vulnerable American options from our proposed method with the benchmark values from the least-square Monte Carlo simulation method. We also perform sensitivity analyses for vulnerable American options and show how the prices of vulnerable American options vary with the correlation between the underlying assets and the option writer’s assets.      

工业工程与中国企业的信息化

本文从工业工程与企业信息化的定义及特点方面入手,通过介绍工业工程的发展、工业工程与企业信息化的相互关系,得出中国制造业只有把握有利的时机,用先进的管理理念、先进的技术实现手段武装自己,走科技之路、技术之路、市场之路,才能在激烈的国际竞争中站住脚跟,实现我国的工业化进程。     

浆纱伸长率及张力在线检测及控制方法

本文给出了智能浆纱机浆纱伸长率及张力在线检测方法。纱速测定采用光电码盘作传感器。这种传感器配上自身的遮光轮可以准确的测定被测轴的转速。测长辊的转速乘以测长辊的周长可以求得测长辊处纱速。同样可以在牵引辊处求得同一单位时间内对应的经纱长度,从而求得伸长率;通过对浆纱机卷绕特性和退卷特性的理论分析,给出张力的检测方法,并采用经典PID算法进行闭环控制。实现了浆纱机浆纱伸长率及张力两个工艺参数的在线测量及控制。     

Board composition, regulatory regime and voluntary disclosure

This study, which examines the association between board monitoring and the level of voluntary disclosure, finds new evidence that firms with a higher proportion of independent directors on the board are associated with higher levels of voluntary disclosure. Although board size and CEO duality are not associated with voluntary disclosure, boards with a majority of independent directors have significantly higher levels of voluntary disclosure than firms with balanced boards. Notably, we find that the presence of an external governance mechanism, the regulatory environment, enhances the strength of the association between the proportion of independent directors and the level of voluntary disclosure. This association is some two to three times greater under a “disclosure-based” regulatory regime than under a “merit-based” regulatory regime.     

基于金融安全的资本流动：理论解读与中国实证

基于IS-LM-BP模型阐述了资本流动—经济非均衡的生成机制,揭示了资本流入规模、资本流入结构、外汇储备及经常项目是影响一国资本流动金融安全的主要因素。通过建立资本流动影响金融安全的测算体系,对1996～2005年我国资本流动进行了实证分析,结果表明：(1)中国资本流动状况总体较好,状态界定为安全；(2)资本流入规模正常,但期限结构不够合理；(3)现阶段我国资本流动的安全运行有保障。     

How Banks' Value-at-Risk Disclosures Predict their Total and Priced Risk: Effects of Bank Technical Sophistication and Learning over Time

Using a sample of eight large commercial banks from 1994 to 2000, Jorion (2002) finds that banks' VaR disclosures for their trading portfolios predict trading income variability. We extend Jorion's findings using a larger sample of 17 banks from 1997 to 2002 reporting trading VaRs under FRR No. 48 (1997). We find that banks' trading VaRs have predictive power for trading income variability that increases with bank technical sophistication and over time. We find that banks' trading VaRs have predictive power for a bank-wide measure of total risk, return variability, and for two bank-wide measures of priced risk, beta and realized returns.     

丙烯酸酯橡胶生产、应用与市场

随着我国汽车工业快速发展,对丙烯酸酯的需求日益增加.文章评述了丙烯酸酯橡胶的生产、市场需求和应用,重点介绍了丙烯酸酯橡胶的共混改性和加工技术,分析现状并提出我国丙烯酸酯工业发展的建议.