关于M·Rosenblatt定理

本文对M.Rosenblatt 定理1的必要条件作出详细证明,并对定理的条件作了推广.     

甲醇自发点火特性研究

从实验和数值模拟两方面探讨了甲醇的热点火特性。实验中应用快速压缩机得到了温度与点火延迟期的关系。计算中采用了基元化学反应动力学模型,给出了压力、温度、产物及主要中间反应体的变化历程。对助燃剂二叔丁基过氧化物的活化作用进行了理论分析。     

随机正则文法的相似

对于给定的随机正则文法G_8是否存在着一个真正随机正则文法G_8,使得L(G_8)=L(G_8),若存在,又如何求出G_8?本文在两个不同的但都不是十分严格的限制下,证明了Thompson方法是有效的,它不仅提供了一个从G_8求G_(?)的方法,而且还包括判断这样的G_8是否存在的判别准则,在此基础上,本文将随机文法等价的概念推广,提出了随机文法相似的概念,并证明了在受到上述相同限制的前提下,每一个随机正则文法G_8总有一个与之相似的真正随机正则文法G_8,其中相似系数由G_8本身唯一决定。     

Structures of Textile-apparel Supply Chain： Concepts and Cases

In recent years, supply chain management （SCM） has been in popularity as a new management philosophy for all industries, including textile and apparel industries. The textile-apparel supply chain is relatively complex because it encompasses many participants such as yarn manufacturers, fabric manufacturers, garment manufacturers and retailers. Although many scholars are engaged in researching SCM in textile and apparel industries, a systematic classification of textile-apparel chain does not exist. The paper proposes three types of textile-apparel chain, nominated vertical integration chain, traditional sourcing chain and 3P-hub （third party as the hub） chain. Different coordinators exist in different types of chain. Three Hong Kong headquartered companies, Esquel Group, TAL Apparel Ltd., and Li ＆ Fang （Trading） Ltd. are used as cases responding to each type of the structures respectively.     

液体链烷烃导热率与分子结构的关系

以烷烃分子中的结构单元及烷基极化效应指数（PEI）作为独立变量，建立了不同温度下液体链烷烃导热率的推算关联模型：λ＝∑aiNi biPEI(N) b2T^u,其中ai,b1,b2,a均为常数，Ni为分子中结构单元数目，PEI（N）为含N个碳原子的烷基极化效应指数，T为温度（K），λ为不同温度下液体链烷烃的导热率，用该模型对45种常见液体链烷轻的155个不同温度下的导热率文献值进行关联和推算，平均绝对误差小于0．004，平均相对误差小于2．85％，适用范围为C5－C24。     

Jude the Obscure as a Social Tragedy

ＷｈａｔｋｉｎｄｏｆｔｒａｇｅｄｙｗｅｒｅＨａｒｄｙ ｓｔｒａｇｉｃｎｏｖｅｌｓ ?Ｕｎｄｏｕｂｔｅｄｌｙ ,ｉｔｗａｓｔｈａｔｏｆｔｈｅｃｏｎｆｌｉｃｔｂｅｔｗｅｅｎｈｕｍａｎａｓｐｉｒａｔｉｏｎｓ,ｄｅｓｉｒｅｓａｎｄａｍｂｉｔｉｏｎｓ ｔｈｅｅｘｐｒｅｓｓｉｏｎｓｏｆｔｈｅＩｍｍａｎｅｎｔＷｉｌｌ ａｎｄｔｈｅｆｏｒｃｅｔｈｗａｒｔｉｎｇｔｈｅｉｒｒｅａｌｉｚａｔｉｏｎ ,ｔｈｅｃｏｎｆｌｉｃｔｗｈａｔｅｎｄｅｄｗｉｔｈｍａｎ ｓｄｅａｔｈ.Ｗｈａｔｗａｓｔｈｅｎｔｈｅｆｏｒｃｅ ?Ｔｈｉｓｗａｓｔｈｅ…     

Bioaccumulation processes in ecosystems

The fate of environmental pollutants — the various isotopes of elements, and inorganic or organic compounds — is a fundamental aspect of ecology and ecotoxicology, and bioaccumulation is a phenomenon often discussed in this context. Human activities have drastically altered natural concentrations of many substances in the environment and added numerous new chemicals. An understanding of the processes of bioaccumulation is important for several reasons. 1) Bioaccumulation in organisms may enhance the persistence of industrial chemicals in the ecosystem as a whole, since they can be fixed in the tissues of organisms. 2) Stored chemicals are not exposed to direct physical, chemical, or biochemical degradation. 3) Stored chemicals can directly affect an individual's health. 4) Predators of those organisms that have bioaccumulated harmful substances may be endangered by food chain effects. While former theories on the processes of bioaccumulation focused on single aspects that affect the extent of accumulation (such as the trophic level within the food chain or the lipophilicity of the chemical), modern theories are based on compartmental kinetics and the integration of various environmental interactions. Concepts include results from quantitative structure-activity relationships (QSAR), pharmacokinetics, ecophysiology and general biology, molecular genetic aspects and selection, and finally the structure of communities and man-made alterations in them.     

沈阳地区淡水硅藻调查

本文结合教学报道了在沈阳地区采集到的淡水硅藻类共计二纲、五目、八科、二十二属、五十六种。     

浅谈排球立体进攻战术理论及实践方法

从现代排球立体进攻战术的演变与发展入手,阐述了立体进攻战术的主要特点,提出了培养与实施立体进攻战术的主要方法。     

基于共生理论的物流金融价值增值作用分析

借用共生理论中共生介质的概念,说明物流金融在制造企业和物流企业共生关系中的介质作用,即其对两者共生关系中物质流、资金流、信息流的整合效果,说明价值增值是共生系统能量增长的一种表现形式.结合波特的价值链模型,分别论证了物流金融对制造企业和物流企业及它们所形成的共生系统的价值增值作用,阐明了价值增值主要源于风险成本的降低及新服务业务的利润增加.研究表明物流金融之于制造企业和物流企业走向对称互惠共生模式的必不可少的介质.