中心极限定理的两个应用

本文基于中心极限定理模型,对终身寿险的给付问题,利用精算现值的基础理论给出了解决方案;对于集体决策优于个体决策问题,给出了结论成立的充分必要条件。     

广东增城市出口收汇逾期未核销的原因及其对策

广东增城市贸易项下银行结售汇实现顺收顺差的前提下，即出现了出口收汇逾斯未核销的严重不良倾向，影响了出口收汇的核销管理工作，期待得到妥善解决。     

Exit Options in Corporate Finance: Liquidity versus Incentives

This paper provides a first study of the optimal design of active monitors'exit options in a problem involving a demand for liquidity and costly monitoring of the issuer. Optimal incentives to monitor the issuer may involve restricting the monitor's right to sell her claims on the firm's cash-flow early. But the monitor will then require a liquidity premium for holding such an illiquid claim. In general, therefore, there will be a trade off between incentives and liquidity. The paper highlights a fundamental complementarity between speculative monitoring in financial markets (which increases the informativeness of prices) and active monitoring inside the firm: in financial markets where price discovery is better and securities prices reflect the fundamentals of the issuer better, the incentive cost of greater liquidity may be smaller and active monitoring incentives may be preserved. The paper spells out the conditions under which more or less liquidity is warranted and applies the analysis to shed light on common exit provisions in venture capital financing.     

METROPOLITAN HOUSE PRICES IN SOUTH AFRICA: DO THEY CONVERGE?

The question this paper investigates is whether or not different metropolitan areas each constitute a separate housing market or whether or not there is a single South African housing market. Theory on the Law of One Price suggests that if products or geographic areas belong in the same market, their absolute prices must converge, so that their relative prices are stationary. By using cross-sectional time series data of five metropolitan areas, the paper tests for the Law of One Price by applying the Im, Pesaran and Shin panel unit root test. The paper finds strong evidence of convergence in large middle-segment house prices and weaker support for convergence in medium middle-segment house prices. In addition, the paper finds no evidence for convergence in small middle-segment house prices. This suggests the existence of a national market for large and possibly middle-segment houses in metropolitan areas, but separate metropolitan markets for small middle-segment houses. In addition, the paper estimates the speed of convergence and finds that large middle-segment house prices converge within two to seven quarters, while the speed of convergence for medium middle-segment house prices in three of the five areas is five to eight quarters.     

张娟娟 打破韩国垄断的第一人

2008年8月14日的北京奥运射箭赛场,第一次奏响了雄壮的中国国歌,这是一个应该被我们永远记住的历史瞬间.被韩国选手"霸占"了几十年的冠军领奖台首次站上了一位笑靥如花的中国选手--张娟娟.     

一种新型高速数字锁相环的研究

本文针对传统方法实现的数字锁相环(DPLL)工作速率低的问题,通过对一种典型的DPLL的分析,找出影响其工作速率的主要因素,研究并提出了一种全新的高速实现方法,并在实验室进行了数据传输位同步提取实验。     

英国电力市场推出新的改革措施

2001年3月27日,英国能源大臣彼得·海恩和天然气与电力市场办公室(Ofgem)总裁卡勒姆·麦卡锡在伦敦宣布新的批发电力交易系统:新电力交易方案(New Electricity Trading Arrangements.NFTA)开始启用。这是在英国电力市场中推出的一项旨在可以使许多大用户从中获益的改革措施。新电力交易方案     

试论生态林业系统的时空观

生态林业系统具有时间、空间两个序列的开发前景。长周期,大跨度的生态林业生产可以分解为复合的短周期方式,使生态意识与经济效益有机结合。空间组合的多层次立体开发有效地利用了光、热、水、土资源,并获得最大生物量;地域组合着眼宏观,注重研究大型骨干及网络性生态工程问题。