涨跌停机制的绩效:上海股市的经验分析

一直以来,理论界和实务界对证券市场实施涨跌停机制的效果存在争议.本文以改进了的Kim和Rhee(1997)的研究方法为基础,结合上海股市的个股价格资料,从波动率溢出假设、延迟价格发现假设和交易干涉假设三个方面对上海股市涨跌停机制的绩效进行实证考察.研究结果表明,中国股市的涨跌停机制是缺乏效率的.文章的最后提出了放宽价格限制幅度和采取不对称的涨跌停机制的政策建议.     

The valuation of a firm’s investment opportunities: a reduced form credit risk perspective

This paper develops a valuation model for a firm’s investment opportunities. Given standard market imperfections, we show that maximizing the firm’s equity value is consistent with the need to include a capital charge for an investment specific to a firm’s capital structure and in excess of the investment’s market determined risk. A reduced form credit risk perspective is taken to enable a continuous time implementation. This continuous time implementation is illustrated within the paper.      

信贷渠道对我国股票市场的影响

信贷渠道是我国货币政策主要的传导渠道。货币政策通过传导渠道对股票市场产生影响。本文运用协整与基于向量自回归模型的格兰杰因果检验和预测方差分解等时间序列分析方法,实证分析信贷渠道对股票市场的影响,结果表明信贷渠道对我国股票市场产生显著的负相关影响。     

Banking deregulation and credit risk: Evidence from the EU

This paper studies the effect of banking deregulation on credit risk. Its theoretical model shows that a bank is willing to invest more resources in screening borrowers when there is an entry threat, even though loan rates are driven lower. Thus, deregulation may result in improved loan quality and lower credit risk. This result is tested using bank-level balance sheet data and macroeconomic data for the European Union. The data reveal that competition intensified after the completion of the Second Banking Directive, while loan quality improved in most markets. Evidence is found that the loan quality improvement is associated with lower interest margin.     

我国外贸企业高坏账率的成因分析及对策研究

近年来,在我国外贸持续增长的繁荣背后,一个数字令人触目惊心,即我国出口业务的坏账率高达5%,这无疑对出口企业的生存和发展构成了极大的危害。而从宏观层面来看,则是国家外汇的一种严重流失。因此,迅速采取积极有效的应对措施已是迫在眉睫。本文在对我国出口企业海外高坏账率的现状及原因进行深刻剖析的基础上,有针对性地提出了破题之策。     

Designing an optimal contest

The paper brings a mechanism design perspective to the study of contests. We consider the problem of selecting a contest success function when the contest designer may also value the prize. We show that any equilibrium outcome that can be achieved by a concave increasing contest success function can be replicated by a linear contest success function. An expected utility maximizing designer should employ a linear homogeneous contest success function. We explicitly derive the optimal contest for a risk-neutral designer and present comparative statics results. Tullock's contest is optimal only when the designer's valuation for the prize is low.     

Global climate change and the research on technical paths of Chinese steel and iron industry against the climate change

The article introduces the impact and essence of climate change and analyzes the attitudes and measures of international community to fight global climate change. From the perspectives of Clean Development Mechanism, Voluntary Carbon Market, energy audit and potential carbon asset investment, this paper discusses the feasible paths of Chinese steel ＆ iron industry against global climate change and summarizes the main fields of adapting to the development of CDM project activities.     

我国发达地区农村金融市场的演进及重构

如果实现二元转型是最终解决"三农"问题的关键,那么现有农村金融体系的重构就不应仅着眼于农户信贷的获取,而至少要同等程度的关注农村工业部门的资本积累。基于这一考虑,本文从我国发达地区转型过程中所面临的双重二元经济特征出发,通过构造竞争条件下农村金融市场的一般均衡模型、农村工业部门的资本积累动态最优化模型和农民收入最大化的动态模型,对农村金融市场的利率市场化、农村金融机构竞争机制和农村金融资源外流问题进行了规范地分析。分析结果认为,无论是利率市场化还是竞争机制的引入,都有一个时机选择问题。     

Credit constraints and smallholder dairy production in the East African highlands: application of a switching regression model

Accurate assessment of farmers' credit constraint condition is important in order to understand the circumstances under which credit would have its greatest impact. In this study a switching regression model was used to determine the impact of credit on smallholder dairy farms in the East African highlands using farm level data from Ethiopia and Kenya. Farmers were classified as credit constrained or credit non-constrained based on their responses from the farm level surveys. No consistent relationship was found between farmers' credit constraint condition and their borrowing status. Most of the variation in milk output per farm was explained by the number of crossbred milking cows in the dairy herd. As credit is likely to facilitate investment in crossbred dairy cows it will have substantial impacts on smallholder dairy farms especially if it is targeted to credit constrained farms.     

THIS IS NOT A CREDIT CRISIS – IT IS A DEBT CRISIS

Using an analogy with ancient Babylonia as its leading theme, this viewpoint argues that the credit crisis is the symptom of an underlying problem. Fuelled by government policies, unprecedented debt levels were run up in industrialised countries over the last quarter century. Present policies of financial sector bailouts are not only an unwise use of taxpayers' money; they maintain economic structures opposed to what classical liberals such as J. S. Mill envisaged as a free-market economy.