A NOTE ON ARBITRAGE AND CLOSED CONVEX CONES

We give an example of a subspace K of     such that     , where     denotes the closure with respect to convergence in probablity. On the other hand, the cone   C ≔ K − L ^∞₊  is dense in   L ^∞  with respect to the weak-star topology  σ( L ^∞, L ¹)  . This example answers a question raised by I. Evstigneev. The topic is motivated by the relation of the notion of no arbitrage and the existence of martingale measures in Mathematical Finance.     

研究生就业形势及策略

自1999年研究生大规模扩招以来,毕业生数量激增,研究生“天之骄子”的地位不复存在,如何有效面对就业形势,转变就业观念,提高就业策略是本文探讨的主要内容。     

浅析我国服务业的库存问题及应对策略

服务业在整个经济中的地位是衡量一国经济结构合理程度、国际竞争力强弱、经济社会发展协调水平等的重要评判指标之一。与中国经济快速持续发展相比,服务业发展落后的短腿现象却日益突出,而服务业的库存管理问题更是落后。     

Benefits and barriers of telework: perception differences of human resources managers according to company's operations strategy

Telework as an integration of Information and Telecommunication Technologies with Human Resources management, means a new job organisation paradigm for companies working in the New Economy. However there are very few empirical studies that have analysed the perception differences of telework benefits and barriers in industrial and service companies. This paper contributes with empirical data to the relationship between the use of telework techniques and the implementation of this new work organisation with the company's operations strategy. The paper uses data from Spanish companies to test the relationship between innovation, employee training, and other production strategy performance parameters with the feasibility of telework adoption.     

用全覆盖的区域政策构建大协调的发展新格局

自促进中部地区崛起的战略提出以后，我国已形成了全面覆盖的区域政策体系。本文对我国4大区域战略进行了详细阐述，勾画了东西南北中大协调、共发展的崭新格局；并对各省级区域内部的协调发展进行了初步研究。     

Financial integration and the price of world covariance risk: Large- vs. small-cap stocks

We investigate whether recent country-level evidence of global pricing is particular to large-cap stocks. Specifically, we examine cross-country return correlations and conduct asset pricing tests on three size-based stock portfolios for nine developed countries over the period from 1980 to 2004. We find that large-cap stocks realize significant comovements across countries, whereas small-cap stocks realize smaller average correlations (relative to both large-cap stocks and small-cap stocks across countries). More important, asset pricing tests suggest that while large-cap stocks are priced globally, global pricing is rejected for most small-cap stocks. Finally, the evidence indicates that financial integration deepened in recent years primarily for large-cap stocks. Overall, the results suggest that the global pricing pertains chiefly to large-cap stocks.     

An analysis of option pricing under systematic consumption risk using GARCH

An issue in the pricing of contingent claims is whether to account for consumption risk. This is relevant for contingent claims on stock indices, such as the FTSE 100 share price index, as investor’s desire for smooth consumption is often used to explain risk premiums on stock market portfolios, but is not used to explain risk premiums on contingent claims themselves. This paper addresses this fundamental question by allowing for consumption in an economy to be correlated with returns. Daily data on the FTSE 100 share price index are used to compare three option pricing models: the Black–Scholes option pricing model, a GARCH (1, 1) model priced under a risk-neutral framework, and a GARCH (1, 1) model priced under systematic consumption risk. The findings are that accounting for systematic consumption risk only provides improved accuracy for in-the-money call options. When the correlation between consumption and returns increases, the model that accounts for consumption risk will produce lower call option prices than observed prices for in-the-money call options. These results combined imply that the potential consumption-related premium in the market for contingent claims is constant in the case of FTSE 100 index options.     

营销角度的特许经营及其竞争法上的思考

特许经营是一种新型的销售方式,作为企业分销系统的构成要素,能够起到降低风险,沟通生产与消费的作用。然而在实际经营过程中也会出现许多诸如指定购买与搭售、联合定价、独占经营等违反竞争法的问题。为适应不断变化的竞争形势,应从竞争法的层面上对其加以规制。     

第三方物流企业内部控制要素的建立策略

第三方物流企业作为一种新型行业，企业的发展已越来越受到企业内部控制薄弱瓶颈的制约．借鉴企业内部控制理论最新成果——企业风险管理框架（ERM）八要素理论建立和完善第三方物流企业内部控制，对该行业做优做强有着深刻的现实意义。