一种复杂系统的集成方案

在分析，对比Ｃ／Ｓ与Ｂ／Ｗ／Ｓ结构的优、缺点的基础上，提出了一种将Ｃ／Ｓ和Ｂ／Ｗ／Ｓ两种结构有效集成起来的新方案，并设计了集成模式的模型，阐述了新模式的系统环境。该集成模式中，并存着两种应用场合；即支持各部门使用的Ｂ／Ｗ／Ｓ系统和某些内部使用的Ｃ／Ｓ系统，而二者又可以存取同一数据库，实例表明该方案是可行的。     

基于三层C/S、B/S集成的物流信息系统体系结构的研究

分析了两层客户端／服务器、三层C／S和三层浏览器／服务器3种传统的物流信息系统体系结构，在此基础上提出了一种基于三层C／S、B／S集成的LIS体系结构模型，并对该结构模型及其特点进行了分析和总结．该结构克服了两层C／S、三层C／S和三层B／S体系结构的不足，以便更好地发挥C／S和B／S体系结构的特性和优势．图4，参7．     

Ru-Pd/AC双金属负载催化剂上不同基团的取代芳烃液相加氢反应活性的比较

采用自制的Ru／AC、Ru-Pd／AC、Pd／AC催化剂，考察了不同供电与吸电基团的取代苯、吡啶以及萘等芳香烃的加氢活性．结果表明：双金属Ru-Pd／AC(w／w=5％）催化剂的活性远大于Ru／AC(w／w=5％)，并与Pd／AC(w／w=3～4％)相当，因此双金属Ru和Pd之间存在协同作用．同时，在相同的实验条件下，带供电子基团的取代苯的加氢活性高于带吸电子基团取代苯，表现出很好的芳环加氢规律。     

基于知识的集成产品设计与制造

基于对知识管理和CAD／CAE／CAPP／CAM集成的关系分析，重点研究了基于知识的CAD／CAE／CAPP／CAM集成技术体系结构，集成平台体系结构，基于知识的CAD／CAE／CAPP／CAM集成的关键技术以及基于知识的CAD／CAE／CAPP／CAM集成系统中的知识管理策略。     

浅谈MIS系统平台模式的选择

MIS系统平台模式主要有Client／Server(C/S)模式、Browser／Server(B／S)模式及其综合应用模式。B／S模式目前只适用于信息发布，对于在线事务处理应用尚有实质性困难，而C／S模式已经积累了大量的应用程序和信息，因而C/S模式与B／S模式还将长期共存。在开发MIS时，应将C／S模式与B／S模式相结合，根据功能的不同，灵活地采用最合适的模式，扬长避短，综合运用。     

分时段并行A／D转换精度理想量化数学模型

给出信息的电压形式从模拟量到数字量精确转换所依赖的基础－Ａ／Ｄ界面。揭示构成各类分时段并行Ａ／Ｄ转换器量化界面基础性，共通性的各种要素性电路环节，对Ａ／Ｄ量化界面电路进行全面整体数学抽象，在此基础上，给出分时段并行Ａ／Ｄ转换精度理想量化数学模型，指明Ａ／Ｄ界面电路全体相关因素的各种函数关系。     

C/C和C/C-SiC复合材料的氧化及烧蚀性能

用液相浸渍．裂解聚硅烷工艺制备了C／C-SiC复合材料，对比了C／C与C／C-SiC复合材料的氧化及烧蚀性能，用扫描电镜(SEM)和X射线衍射(XRD)分析了氧化与烧蚀前后的微观结构及物相变化．结果表明：C／C-SiC复合材料使C／C复合材料的氧化起始温度从500℃提高到700℃；在600℃和700℃恒温氧化条件下，C／C-SiC复合材料比C／C复合材料的氧化速率分别降低38％和47％，失重率分别降低35％和47％；C／C-SiC复合材料的耐烧蚀性能优于C／C复合材料．     

基于C/S与B/S的成人高教MIS的设计与实现

针对成人高等教育管理的特点与遇到的问题，提出了基于COM 的C／S与B／S混合模式的成人高教管理信息系统的设计方案，通过引入COM 组件技术把C／S与B／S有机结合起来，使得软件的代码重用性得到了加强，且具有较高的效率与安全性，易于软件的升级与维护．目前，该方案已在广西师范大学成人教育学院成功实施，并获得了较好的效果．     

一种新颖的B／S模式实现方法

采用Ｂ／Ｓ模式是目前应用系统设计开发的主要特征，采用Ｓｙｂａｓｅ、ＰｏｗｅｒＢｕｉｌｄｅｒ、Ｎｏｔｅｓ共同实现Ｂ／Ｓ模式能满足各种应用功能要求，开发效率高，便于原有Ｃ／Ｓ模式应用向Ｂ／Ｓ模式应用平滑过渡，是一种经适应的Ｂ／Ｓ模式实现新方法。     

CAD／CAE／CAM技术在注塑产品开发中的应用及发展

介绍了注塑模CAD／CAE／CAM技术，以STRIM100为例说明CAD／CAE／CAM软件在注塑产品开发中的应用并对注塑模CAD／CAE／CAM技术的发展进行了展望。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has