广东、江苏上市公司盈利能力比较

对广东省与江苏省的上市公司的盈利能力进行了统计比较分析，并用相关分析等方法对盈利能力与公司规模、成长性和现金流量间的关系进行了探索。文章结合实际问题的分析讨论了统计分析的一些方法问题。     

上海银钱界与1935年白银风潮

受美国白银政策的影响，1935年中国爆发了白银风潮，在此次风潮前后，上海银钱界受到严重的影响，大量的钱庄，银行破产，为渡过危机，银钱界不得不求助于国民政府，逐渐被国民政府所控制。     

Pressure drop in a packed bed with sintered ore particles as applied to sinter coolers with a novel vertically arranged design for waste heat recovery

The pressure drop over a packed bed with sintered ore particles was studied experimentally. The sintered ore particles were characterized to determine their equivalent particle diameter, bed voidage, and sphericity. The pressure drop experiments were performed on unsorted and sieved particles with various size distributions for a superficial velocity up to 2.4 m/s, covering flow regimes from laminar to turbulent. It was shown that the Ergun equation underestimates the pressure drop for such highly irregular-shaped particles by about 40%. The measured modified friction factor was well correlated to a scaled Ergun equation, which was verified to be valid for the modified particle Reynolds number up to 12 000 toward design and optimization of vertically arranged sinter coolers for waste heat recovery.     

Large eddy simulation of the gas-particle turbulent wake flow

To find out the detailed characteristics of the coherent structures and associated particle dispersion in free shear flow, large eddy simulation method was adopted to investigate a two-dimensional particle-laden wake flow. The well-known Sub-grid Scale mode introduced by Smagorinsky was employed to simulate the gas flow field and Lagrangian approach was used to trace the particles. The results showed that the typical large-scale vortex structures exhibit a stable counter rotating arrangement of opposite sign, and alternately form from the near wall region, shed and move towards the downstream positions of the wake with the development of the flow. For particle dispersion, the Stokes number of particles is a key parameter. At the Stokes numbers of 1.4 and 3.8 the particles concentrate highly in the outer boundary regions. While the particles congregate densely in the vortex core regions at the Stokes number of 0.15, and the particles at Stokes number of 15 assemble in the vortex braid regions and the rib regions between the adjoining vortex structures.     

对定向行走课分层教学的探索

本文立足定向行走课的实际,积极探索分层教学的有效方法,认为应尊重视障学生发展多样性,分层教学方法与课堂教学过程相结合,激发视障学生的积极性与主动性。     

浙江省基础研究20年投入产出情况分析

基础研究是自主创新的源头,也是培育创新人才的摇篮.一个国家或地区基础研究的水平在一定程度上反映了该国或地区的持续竞争能力.从投入产出角度,对浙江省基础研究20年来所投入的人力、财力以及相应的论文、专利等产出进行了系统分析,指出基础研究对于区域创新能力的作用,同时也指明了浙江基础研究所存在的问题.     

一种基于多重哈希词典和K-最短路径算法的中文粗分词方案研究

本文在已有研究基础上,针对中文粗分词,设计了多重哈希词典结构,以提高分词的词典匹配效率,同时基于删除算法改进了中科院ICTCLAS分词系统的K-最短路径搜索思想.最后,论文对所研究技术方案进行了系统实现.系统实验结果表明,对于大规模文本,论文所提出的粗分词方案体现出了很好的性能.     

晚清及民国时期教科书版权立法述论

针对晚清至民国期间,教科书版权保护力度逐渐增强,著作者权益逐步受到关注,教科书版权立法逐步完善这一版权制度化历程,指出版权立法作为近代教科书制度建设的有力工具,对促进教科书近代化意义深远,可为当前教科书版权立法提供历史的借鉴。     

虚拟企业知识传播的互动整合模式研究

在激烈的全球化竞争中,虚拟企业是企业提高灵活性和反应能力的最佳逢径之一.知识传播对于虚拟企业的运作尤为重要.本文以虚拟企业知识协作网络中不同成员企业问的知识传播为研究对象,将知识传播和知识整合相融合,提出了能够促进其高效知识传播的"互动整合模式".     

Numerical simulation on dense gas-particle riser flow

A turbulence gas-solid model that combines Eulerian approach and Lagrangian approach is formulated, which takes inter-particle interaction into consideration on the base of kinetic theory. The numerical algorithm is included. Comparison of the model results with the experimental results of Miller and Gidaspow (1992) showed good agreement. Project(59425004) supported by NSFC.