公开市场业务有效性的实证检验

本文选取了2004年～2006年我国公开市场操作中的央行7天正回购利率、三个月期央行票据发行利率和1年期央行票据发行利率,以及相对应时期的货币市场利率和中期国债利率,对其进行了统计分析、协整检验和因果关系检验,以此研究公开市场业务对我国市场利率的影响,研究我国公开市场业务的有效性和局限性.     

论我国货币供应量中介目标的有效性

以普勒基本分析理论为基础，对我国经济的基础冲击进行了两阶段实证分析，结果表明目前的冲击仍然主要来自于商品市场；分析了货币供应量与真实GDP之间存在着长期均衡关系，认为货币供应量作为中介目标仍然具有理论上的合理性，但是合理性并不一定意味着效率性，进而通过Granger因果检验对货币供应量的低效性进行了证明。在实证分析的基础上对上述问题的产生原因进行了分析。     

Keynes's theory of liquidity preference and his debt management and monetary policies

This paper seeks to bolster the view that Keynes was a monetaryeconomist concerned primarily with monetary and not fiscal policy.His most fundamental policy conclusion for national economieswas that the authorities could control the long-term rate ofinterest and should do so to promote investment, growth andemployment. Keynes's theory of liquidity preference is presentedas a theory of money as a store of value that leads to thisfundamental policy conclusion. The theory is then applied toexplain the debt management, monetary and international financialpolicies that were adopted in World War II.     

Exchange rate volatility and regime change: A Visegrad comparison

We analyze exchange rate volatility in the Visegrad Four countries during the period in which they abandoned tight regimes for more flexible ones. We account for path dependency, asymmetric shocks, and movements in interest rates. In addition, we allow for a generalized error distribution. The overall findings are that path-dependent volatility has a limited effect on exchange rate developments and that the introduction of floating regimes tends to increase exchange rate volatility. During the period of flexible regimes, volatility was mainly driven by surprises. Asymmetric effects of news tend to decrease volatility under the floating regime. Interest differentials impact exchange rate volatility contemporaneously under either regime, although we find no intertemporal effect of interest differentials. Journal of Comparative Economics 34 (4) (2006) 727–753.     

论我国商业银行中间业务的发展

随着全球一体化不断深化,中间业务迅速发展,并已成为世界各国银行扩大收入、分散风险的主要手段.由于我国商业银行盈利模式单调,在国际竞争中常处于不利位置.本文主要从中间业务自身特点出发,论述中间业务的发展对我国商业银行的重要性,初步勾画出发展中间业务的总体思路,试图为我国商业银行寻找新的盈利增长点.     

Joint-Product Export Smuggling and Export Tax Policy

The effect of smuggling on tax revenue collection and the revenue-maximizing tax rate is an unresolved issue in the smuggling literature. Clandestine and joint-product smuggling models arrive at different conclusions concerning smuggling's effect on tax revenue collection and the revenue-maximizing tax rate. Clandestine (joint-product) smuggling is consistent with the assumption that legal and illegal trade are substitutable (complementary) activities for the exporting firm. The effect of smuggling on the tax rate and tax revenue is shown to be dependent on whether smuggling and legal trade are assumed to be complementary or substitutable activities.     

CLOSED-FORM SOLUTIONS FOR OPTIMAL PORTFOLIO SELECTION WITH STOCHASTIC INTEREST RATE AND INVESTMENT CONSTRAINTS

We examine the portfolio choice problem of an investor with constant relative risk aversion in a financial market with partially hedgeable interest rate risk. The individual shadow price of the portfolio constraint is characterized as the solution of a new backward equation involving Malliavin derivatives. A generalization of this equation is studied and solved in explicit form. This result, applied to our financial model, yields closed-form solutions for the shadow price and the optimal portfolio. The effects of parameters such as risk aversion, interest rate volatility, investment horizon, and tightness of the constraint are examined. Applications of our method to a monetary economy with inflation risk and to an international setting with currency risk are also provided.     

论适度保护关税税率

面对日益加速的经济全球化进程,各国仍然在普遍使用关税措施来保护本国产业的发展.在这方面,发展中国家需要解决的问题是设定一个适度的保护关税税率,以让国内产业既有生存和发展的空间,同时又有足够的竞争压力来提高效率.根据国内与国际平均生产成本的差异来确定保护关税的税率是一个可行的办法.进一步削减关税是我国加入WTO后需要承担的义务,应当按照适度保护关税的原则把平均关税的税率稳定在一个合理的水平上,并根据国内不同产业的发展状况,提供必要而有效的保护.     

Timeliness of Reporting and Earnings Information Transfers

This study examines earnings timeliness and its effect on earnings information transfers. Empirical analyses focus on a sample of approximately fifteen hundred earnings reports and nearly four thousand information transfers. The principal findings are: (1) earlier earnings releases yield negative information transfers, (2) earnings releases yield negative (nominal) information transfers to firms that previously (subsequently) release their earnings reports, and (3) earlier earnings releases yield negative information transfers to firms that have not yet disclosed earnings. These findings show that the timing of earnings reports has significant and far-reaching economic consequences.     

《西方经济学》宏观部分若干概念错误与纠正——与厉以宁、朱善利、章铮等商榷

文章阐述了宏观经济学中几个重要的基本概念,指出了厉以宁先生主编的《西方经济学》一书中的几处基本概念表述的错误,并进一步作了纠正,欲与作者商榷。