本文探讨了银行间市场信用风险管理。随着买断式回购业务和远期交易业务的开展，信用风险管理的重要性将日益凸现。

Existing literature has found no evidence of market-timing ability by mutual funds using tests based on fund returns. This paper proposes alternative market-timing tests based on observed fund holdings. The holdings-based measures are shown to be more powerful than the return-based measures, and are not subject to "articial timing" bias. Applying the holdings-based tests, we nd strong evidence of mutual fund timing ability. Our findings also suggest that market-timing funds tend to have higher returns and trade more actively. Furthermore, they seem to have market-timing information beyond those common return-predictive economic variables documented in the academic studies. Finally, we quantify the potential economic value of market-timing as a contingent claim. The magnitude of the estimated values indicates that market-timing is potentially an important investment strategy deserving more academic attention.

本文首先从市场波动性、噪声波动性、印花税收入和券商佣金收入等几个方面，分析了中国证券市场交易印花税税率调整所产生的影响。结果表明：税率调整对市场波动性和噪声波动性有一定程度的影响，其具体影响模式为税率上调将会提高市场波动性和噪声波动性，税率下调则导致市场波动性和噪声波动性一定程度的下降；税率调整的方向和税收收入变化的方向一致，而对券商佣金收入几乎没有影响。其次，我们根据分析所得的结果，提出了对我国证券市场交易税制度改革的政策建议。

加入WTO对我国金融业既是挑战，也是一个新的发展机遇。如何在新形势下重构我国金融机构监管体系，为我国金融业的安全、稳定、高效运行提供良好的制度保证和环境保证，是我国政府所面临的重大课题。基于对改革成本的考虑，2002年全国金融工作会议确定仍由央行继续负责银行监管，并没有象预期那样就综合性金融监管提出切实可行的方案。这种金融监管体制难以适应新形势的要求。本文就我国金融监管体制的重构进行了探讨。

禁反言规则是体现保险法的最大诚信原则的重要制度设计之一，但我国保险立法中禁反言规则厥如。本文首先简要回顾禁反言规则在英美法中历史沿革，然后定义了保险之禁反言规则的概念以及四项构成要件，最后从保险合同三个环节和保险人与保险代理人两个角度对保险之禁反言规则的运作和限制予以阐释，希冀对完善我国保险立法有所裨益。