代理证券相对有效性

分析了具有特定的期望收益率向量R与风险因子向量β截面关系的代理证券组合边界,进而研究了代理证券组合边界与有效证券组合边界的差异以及代理证券相对有效度。     

Accountability in research using persons with mental illness

Although medical research involving the use of persons with mental illness is critically important, in order for the research to be ethical and legal there are certain considerations and restrictions which should be immediately readdressed in order to insure that the welfare of these vulnerable research subjects is protected, and their best interests are assured. A brief historical examination of medical research codes, guidelines, recommendations and Federal Regulations reveals the various considerations and restrictions on informed consent and accountability applicable to the use of persons with mental illness in medical research. Several concerns are raised about how these considerations and restrictions have been interpreted, and specific recommendations are offered to improve them immediately by means of representation from consumers and/or their families, and organizations, e.g., NAMI members.     

我国股票市场的流动性风险溢价研究

我国股票预期回报率中包含显著的非流动性补偿和流动性风险溢价,而且非流动性补偿和流动性风险溢价更为显著地出现在流动性较差或者说价格冲击弹性较高的股票上.由于流动性水平和流动性风险在股票横截面上存在强相关性,使得代理流动性水平的非流动性指标能够抓住流动性风险的溢价效应.经典资本资产定价模型的价格风险敏感度对股票回报率缺乏解释力,意味着股票的风险溢价更多地来自对流动性风险的补偿,而非来自对单纯的价格风险的补偿.     

通胀率对中国股票市场波动影响的传导机制研究

通过研究不同通胀率趋势状态下股票实际收益与通胀率的影响关系,足以判断股票市场与不同宏观经济变量之间的逻辑关系。实证研究发现,1994年1月至1999年12月通胀率下滑时期,通胀率与股票真实收益率之间存在微弱负相关,实际上是受不显著的代理效应影响;2000年1月至2011年9月通胀率震荡攀升时期,通胀率与股票真实收益率显著负相关,来源于显著的代理与货币幻觉效应。因此,通胀率影响股票真实收益率的传导机制以及股票市场对各种经济变量变动的敏感度都取决于通胀率趋势状态,而采取适度紧缩的货币政策事先抑制通胀率趋势性上扬,就能达到维护市场稳定发展的作用。     

论我国股东委托书征集制度的构建

股东委托书征集制度是股份公司股权分散化、流动化的必然产物,它涉及委托代理行为和征集行为。我国现行有关委托书征集的立法主要是委托授权的内容,而征集行为欠明确和详细的规定。在考察我国资本市场现状和今后发展趋势的基础上,借鉴国外相关的立法,完善我国有关委托书征集的规则。     

中国股票市场的"不流动性溢价"现象研究

为了解释中国股票市场出现的“不流动性溢价”现象,根据金融经济学的基本理论:所有承担了系统性金融风险的风险厌恶投资者都要求获得超额的收益。假定收益—风险时间序列服从某个包含流动性补偿的GARCH-M模型;实证检验结果表明理论假设合理,即:股票的超额回报包含不流动性补偿,预期的不流动性与未来市场超额回报正相关,而未预期的不流动性与当期的市场超额回报负相关。     

流动性资产定价理论与实证研究

由于交易成本、市场摩擦等因素的影响,资产价格偏离标准资产定价理论的预期,产生了流动性溢价。非流动性产生的来源、机理、性质引起学术界持续的兴趣,尤其是非流动性对最优消费和投资策略,资产价格和收益,以及风险溢价的影响成为资产定价领域里最具有挑战性的课题之一。本文从理论和实证两个方面对探讨流动性与资产价格之间关系的文献进行了简要回顾。     

Bribes,power, and managerial control in corporate voting games

Proxy fights have received comparatively little attention relative to the more popular methods for corporate control transfer: merger and tender offers. This paper presents an analytic model of the proxy contest as a cooperative game with four players: management, passive shareholders, insurgent shareholders and a trust fund. The power of the players and the effectiveness of certain managerial actions is discussed.     

“They Don't Want to Hear Us”

Abstract

This study used focus groups to understand Hispanic elders' and adult children's concerns about end-of-life planning. Ten older persons participated in the elders group, and ten adult children in a separate group. Themes in both groups included communication, control, burden, spirituality, religious issues, and importance of family relationships. Communication regarding end-of-life planning was of particular importance to both elders and adult children. The most striking indication of the challenges in communication about end-of-life issues is the insistence by both the elders and the adult children that their children/parents do not want to have these discussions.     

An Analysis of the Patient Self-Determination Act of 1990

Advance directives (ADs) provide a way to express medical care preferences at the end of life, yet they are underutilized. This article analyzes the effect of the Patient Self-Determination Act and presents recommendations for the improvement of AD legislation. Although the Patient Self-Determination Act was intended to educate patients, clinicians, and the public about ADs, more work is needed to improve involvement in end-of-life care decision making for individuals who may be disenfranchised in this process.