关于铁矿产品合理价位的研究与建议

铁矿石是钢铁工业的重要原料,其价格一方面伴随钢铁产品价格升降同时起伏,另一方面其供求状况又对钢铁产品价格的变化起着重要的制约作用。所以,研究铁矿产品合理价位,保持市场供应相对稳定,不仅对保持矿山企业可持续发展具有重要作用,同时,也是稳定钢铁工业原料供应,维护钢铁产品合理价位和市场稳定的基础,值得认真研究。因此,冶金价格协会、冶金矿山价格研究会、《冶金财会》编辑部组织专家、学者和矿山实际工作者组成联合调研组,对这个问题进行了专题研究,现将研究结果报告如下。一、建国以来我国铁矿产品价格变动的基本情况建国50多年来…     

Revealing information in auctions: the allocation effect

When there are two bidders, releasing independent information in an English auction with private values makes the seller worse off. However, this is no longer true with more bidders: when there is enough competition, revelation benefits the auctioneer. In three examples the dividing case is shown to be three bidders. This allocation effect applies to other standard auctions and parallels the bundling decision in a multi-unit auction. I would like to thank Jeremy Bulow, Willie Fuchs, Paul Klemperer, Rob McMillan, Phil Reny, Jeff Zwiebel and especially Andy Skrzypacz. I also grateful to two referees and an Associate Editor for a number of helpful comments.     

关于石油企业税费问题的几点思考

在社会主义市场经济条件下,石油企业负有依法纳税的义务,同时还要不断提高经营效益,维护投资者的利益。文章围绕石油税收政策体系的建设问题,重点讨论了石油税费政策与石油价格变化的关系、税费水平与资源禀赋和油品品质的关系、石油税费与节能环保的关系以及如何依据石油工业发展和石油市场变化情况及时调整石油税收政策。通过分析现行税制在实践中的作用与效果,探讨了税制改革对石油石化产业发展的影响,并提出对策和建议。     

The Effect of Futures Market Volume on Spot Market Volatility

There has been considerable interest, both academic and regulatory, in the hypothesis that the higher is the volume in the futures market, the greater is the destabilizing effect on the stock market. We show that conventional approaches, such as adding exogenous variables to GARCH models, may lead to false inferences in tests of this question. Using a stochastic volatility model, we show that, contrary to regulatory concern and the results of other papers, contemporaneous informationless futures market trading has no significant effect on spot market volatility.     

Trade Transparency and the London Stock Exchange

On the London Stock Exchange the publication of large trades is delayed to give the market-maker concerned time to unwind the change in their inventory. Using trade and quotations data on 42 stocks for two years, a number of different effects are investigated. These include the association between trade size and the traded bid-ask spread, the inventory control policies of individual market-makers around large trades, the size and speed of the price impact of large trades whose publication is delayed, and the effects of delayed publication on the volume and spreads of the traded equity options market.     

继往开来 共谋发展——记《国际石油经济》理事会换届会议

12月1日,北京外国专家大厦迎来了前来参加2008年度《国际石油经济》理事会议的各理事单位代表。这次理事会议是一次继往开来的会议,会议的任务是回顾总结2004年以来《国际石油经济》第三届理事会的工作，推举产生第四届理事会，讨论修改理事会章程，分析在国内外经济形势急剧变化中《国际石油经济》面临的形势，确定第四届理事会的主要任务。