商业银行利率风险计量模型及实证分析--非平移收益曲线条件下的随机免疫策略

传统的久期理论建立在收益曲线平移等严格假设条件上，因而其在实践中的有效性大大降低了。根据Markowitz（1959）等理论可推导出：资产价格的总风险包括收益的方差和全久期向量两部分；假若商业银行采取现金中性（cash neutrality）的资产交易策略，风险计量模型可转换为线性规划问题，从而可以构建基于利率风险最小化模型的随机免疫策略。也就是说，引入随机免疫的理念来替代经典的免疫理论，通过实证分析得出：无现金交易条件下的随机免疫策略能够降低利率风险。     

利率风险管理的重要免疫工具:持续期模型

利率市场化进程的加快凸现利率风险管理的重要性和迫切性.作为一种利率风险管理的重要免疫工具,持续期配比策略在近些年来有了较大发展.本文在深入探讨Macaulay持续期的三种重要含义的基础上,详细地分析和比较了近期提出的几种主要持续期即:方向持续期、 部分持续期和近似持续期,最后简单讨论了将这些持续期模型及其免疫策略用于中国市场应注意的问题.     

基于久期缺口的商业银行利率风险免疫策略及实证分析

随着利率市场化的深入，利率风险越来越成为影响商业银行绩效的主要风险，因此，如何对商业银行利率风险进行计量及管理，日益成为国内外学术界高度关注的重要课题。通过建立久期缺口模型，提出了商业银行利率风险免疫策略，并进行实证分析表明：通过确立目标项目，调整资产与负债结构，可以较好地实现商业银行的利率风险免疫。     

死亡率免疫理论及其在长寿风险对冲中的应用

基于死亡率免疫理论探讨保险公司长寿风险的自然对冲问题,研究年龄、性别与保险期限等因素与保单久期和凸性之间的关系,发现保险公司欲达到长寿风险的完全对冲,其寿险业务和年金业务必须达到的最小ρ比例应该等于年金和寿险保单的久期之比,表明保险公司可以通过选择调整寿险和年金业务的比例来对冲长寿风险的影响。     

The effects of health aid on child health promotion in developing countries: cross-country evidence

Although epidemiological knowledge in relation to child health has improved in the last few decades, around 3 million children die each year in developing countries from preventable diseases. The international development community views increased immunization coverage for children as an important step in eliminating or reducing these deaths. Many developing countries have very limited resources to tackle major health problems and have to rely on external finance. This article examines the impact of foreign aid devoted to the health sector on child health promotion in developing countries. Two proxies for child health promotion are used: (a) immunization against measles and (b) immunization against Diphtheria–Pertussis–Tetanus (DPT). A range of model specifications and panel data econometric techniques are applied to data covering the period 1990 to 2005. This article finds a positive and statistically significant link between health aid and the measures of child health promotion.     

Health Belief Model: Evaluating Marketing Promotion in a Public Vaccination Program

National health objectives are driven to increase participation rates. Individual health decisions are determined by attitudes, behavior, lifestyles, and government policies. This research, therefore, examined not just the development and delivery of a message targeting individual voluntary behavior change, but the intention of changes in social structures that will facilitate individuals reaching their potential; thus the purpose of this article is to shed light on the uptake of the human papillomavirus (HPV) immunization using the health belief model (HBM). Research was conducted with the use of focus groups by drawing on the framework of the HBM. This research approach is conceptual by nature, based on the virtue of marketing promotion and on HBM literature. Though offering the vaccine free to the general public provides additional evidence to certain groups on the intention to act or uptake of the vaccine, awareness levels were found to be poor despite increased efforts by the government trying to promote this vaccine. There was evidence that social capital and trust can produce effective communication message strategies that reinforce social bonds. This article provides an interesting basis for further investigation; however, as implausible as it seems the article also contributes to the concept of perceived benefits and of self-efficacy.     

基于协方差调整的久期——凸度免疫策略分析

众所周知,简单久期—凸度免疫策略中隐含两个假设:水平收益率曲线及其平行变动。针对这两个假设与实际情况不符的问题,本文借鉴Carcano和Foresi(1997)的思想,建立了一个基于协方差调整的一般久期—凸度免疫模型,并用两资产对冲组合和三资产对冲组合进行了具体分析。进一步,我们采用上海证券交易所上市的国债交易数据对一般模型的免疫效果进行了检验,结果显示基于协方差调整的久期—凸度免疫策略比简单久期—凸度免疫策略具有相对较强的免疫能力。     

Immunizing Foreign Exchange Contracts Against Swap Rate and Volatility Risks

Swap rate risk, also called the problem of' "maturity gaps," originates from foreign currency holdings whenever the involved contracts have differing maturities. Such differing maturities give rise to a sensitivity of the portfolio values with respect to the "swap rate," or differential between the relative interest rates in two countries. Volatility risk, which typically affects only currency contracts having asymmetric payoffs (such as currency options), gives rise to a sensitivity of portfolio values with respect to changes in the exchange rate volatility. In this article we show how currency portfolios may be immunized , or made insensitive, to both swap rate risk and volatility risk, in the sense of Macaulay's (1938) classical treatment of interest rate risk. The European currency option contract is the primary subject of our discussion, since we show that both ordinary forward contracts and other complicated currency contracts are equivalent to suitable combinations of European currency options.     

Bond Immunization for Affine Term Structures

This paper generalizes a number of important immunization theorems. We show that the Fisher and Weil immunization, Bierwag and Khang minimax, Redington multiple liability, and Bierwag, Kaufman, and Toevs coverage theorems can be generalized to the class of affine term structures. This class of term structures contains many models that are commonly used in the finance literature.