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.     

董事利益保护刍议

董事会中心主义的确立，董事义务与责任体系的完备，使得对董事利益的保护成为公司经营管理效率提高的必要前提。如何建立符合中国实际的董事利益保护机制是摆在法学研究者面前一个紧迫而重要的课题。     

银行保函在业主反索赔中重要作用的探讨

我国建筑业目前正处于加入WTO后的3～5年的过渡期，国内建筑市场国际化的趋势使工程索赔问题必须与国际惯例接轨，从国际工程惯例出发，详细论述了银行保函的种类及其在业主反索赔过程中的重要作用，为业主提供了一种可以借鉴的工程项目管理方式。     

Lead markets, innovation differentials and growth

This article suggests that the specialization of countries in international trade is determined by the lead-lag market pattern of national markets. Many internationally successful innovations have been adopted first in one country while other countries initially either preferred other designs or an established product. A model for the international diffusion of innovations is presented in which nationally preferred innovation designs compete to become a globally dominant design. In this model, there are country-specific market attributes that increase the likelihood that the choice a country makes among alternative technologies is followed around the world. It is argued that technological knowledge gaps are not the origin of an international competitive advantage. Instead, a country gains a competitive advantage because a specific innovation design was adopted earlier than in any other country. This gives local firms a head start in producing, gathering marketing intelligence and securing the property rights of a globally successful innovation. In countries with lag market characteristics, domestic innovations are less likely to get adopted worldwide. Lag markets often switch from a domestic innovation design to a foreign innovation design, which increases imports. The lead-lag market explanation of trade specialization has implications for national policies. In this model domestic innovations do not always foster exports; idiosyncratic innovations induced by lag market contexts can hamper the export chances of local firms and in the end lead to an increase in imports. It is suggested that in order to increase exports, national policies have to distinguish between a domestic lead and lag market context in each industry. While in a lead market context, traditional policy instruments that enhance the rate of innovations are effective, in a lag market situation national follower strategies are more appropriate.     

重庆市城市土地经济效益评价

从产出和投入两方面构建城市土地经济效益评价的指标体系,采用层次分析法对重庆城市土地的经济效益进行评价,可知:重庆城市土地的经济效益总体水平较低、波动较大,重庆城市近年来投入偏高影响了土地经济效益,而且重庆城市土地利用的集约化水平不高.     

浅谈王佐良的翻译思想

文章回顾了王佐良的翻译历程，分析了他的诗歌翻译思想，指出他重翻译实践和技巧而轻理论的思想。     

小学生体型特征及其随年龄变化规律

该文对嘉兴市6个年级共600个小学生的人体测量数据，进行了统计分析，探讨了男女小学生体型随年龄变化的规律。     

浅析公共服务有效供给的新模式

通过对公共服务的属性分析，结合新政治经济学理论和政府失败的现实因素，探索公益物品的有效供给模式，提出了公共服务的签约转包机制，并分析了这一机制的不足和政府的作用。     

各向异性厚板固有频率的精确解

该文抛弃薄板理论的位移和应力假设，利用矩阵分析和三维弹性动力学理论，导出四边简支各向异性厚板的固有频率方程。该方法可推广应用于各向异性层合板动力分析。     

完善欠发达地区在区域不平衡发展中的促动机制

区域不平衡发展是一个普遍的规律,欠发达地区应根据不平衡发展理论,吸取经验教训,建立科学的不平衡发展促动机制。