双峰聚乙烯的生产技术及市场前景

介绍双峰聚乙烯的性能特点和用途,阐述双峰聚乙烯的生产工艺、催化剂的研究开发进展以及国内外生产概况,提出了发展我国双峰聚乙烯生产的一些建议.     

International trade agreements, environmental policy, and relocation of production

This paper studies the influence of free trade agreements on national environmental policies and location strategies of polluting firms. It is shown that banning export subsidies makes relocation of production more attractive for firms. When export subsidies are banned relocation is profitable because: (1) the rival firm reduces output due to more stringent emission regulation in the host country of the investment and (2) relocation leads to lower emission tax rate in the original home country of the investing firm. When export subsidies are used, the first effect is absent because the host government is able to use the export subsidy to compensate the negative effect of more stringent emission taxation on domestic shareholders.     

发展循环经济是企业的社会责任

循环经济是一种新的实现可持续发展的经济模式,发展循环经济是当今世界的潮流。中国经济虽保持着高速增长,但已面临着严重的资源约束和生态环境压力。我们必须充分认识到中国发展循环经济的重要性与紧迫性,发展循环经济是中国企业责无旁贷所应承担的社会责任。     

开发人禽流感险是适应市场勇于创新的表现

当下正是人们普遍关注禽流感疫情之时，民生人寿和华安财险两家保险公司先后推出专门针对人禽流感的定期人寿保险，引起了保险界极大关注，褒贬不一，批评者认为这是哗众取宠；保费没有精算基础；发生大规模赔付怎么办。本文却认为推出人禽流感保险是新兴保险公司适应市场勇于创新的很好表现，开展特色业务一般都是通过经验估计制定费率，尔后在实践中不断调整和完善；在国家和整个社会全体动员积极预防禽流感的情况下，导致疫情大规模扩散引发大规模保险赔付的概率微乎其微，不存在影响其它险种客户利益的情况。     

制造加工型生产模式与国际竞争力——基于中、目发展的比较研究

考虑到中国经济发展的活力以及正面临的能源短缺和国际贸易摩擦的加剧,本文深入考察了日本经济的发展历程。基于中国与日本战后经济腾飞的相似之处,文章剖析并比较两国经济发展共同点之后深刻的体制根源,对提升中国经济的国际竞争力有一定的借鉴意义。     

The relationship between expected utility and higher moments for distributions captured by the Gram–Charlier class

In this letter we derive the closed form solution for expected utility in terms of higher moments of the distribution of wealth when expected utility takes the CARA form and the distribution of wealth is captured by the Gram–Charlier class of distributions. We derive the condition under which positive skewness can be associated with a decrease in expected utility.     

Multidimensional inequality with variable population size

Summary. We study inequality in a context of more than one variable by extending a celebrated result of Hardy, Littlewood and Pölya (1934) to the case of distributions with variable population sizes, whose individuals differ in many characteristics besides income. A new ordering between rectangular matrices, representing such distributions, is provided and characterized by convexity theory.Received: 19 October 2003, Revised: 7 September 2004, JEL Classification Numbers: D31, D63, I31.I am indebted to C. d’Aspremont, V. Dardanoni, G. Koshevoy, K. Mosler and especially J. Weymark and an anonymous referee for many useful comments.     

PRICING SWAPTIONS AND COUPON BOND OPTIONS IN AFFINE TERM STRUCTURE MODELS

We propose an approach to find an approximate price of a swaption in affine term structure models. Our approach is based on the derivation of approximate swap rate dynamics in which the volatility of the forward swap rate is itself an affine function of the factors. Hence, we remain in the affine framework and well-known results on transforms and transform inversion can be used to obtain swaption prices in similar fashion to zero bond options (i.e., caplets). The method can easily be generalized to price options on coupon bonds. Computational times compare favorably with other approximation methods. Numerical results on the quality of the approximation are excellent. Our results show that in affine models, analogously to the LIBOR market model, LIBOR and swap rates are driven by approximately the same type of (in this case affine) dynamics.     

转型与经济信息生产方式的演化创新

一定制度下的经济信息生产方式是决定其资源配置效率的重要基础。从制度或资源配置方式的转型角度,分析了经济信息生产方式与一定制度下资源配置的效率关系;指出与传统自由市场经济相对应的现行的会计、统计理论方法及其制度属于经济信息个体性生产方式,不适应以混合经济为特征的现代市场经济对经济信息的需求;最后以现代市场经济的混合经济特征为基点,从市场经济活动的广泛联系性、经济信息的公共物品性和满足社会需求出发,提出了建立经济信息社会化生产方式与制度模式的构想。     

关于商品价值、生产价格及其售卖价格公式量化的探讨

传统的商品价值公式C V m,只能理解为商品在生产领域所形成的价值,而不能理解为是商品价格因供求变化围绕其价值中枢上下波动的那个商品价值.真正的商品价值,应既包括商品的生产价值,又包括商品的流通价值.因为,在流通领域中的保管、运输劳动也是创造价值的劳动;同时,纯粹商业劳动亦是创造价值的劳动.依据这一思路,生产价格应改为"生产--流通价格"或"商品平均价格".