基于面向对象的物料采购系统

以一个基于面向对象的企业集成模型为研究背景，针对企业物料管理的实际，运用面向对象的系统设计方法和面向对象的程度设计语言Ｃ＾＋＋和ＲＯＣＫ，在计算机上实现上相应的物料采购系统。     

面向对象数据库O2DB的模型与实现

给出了一个面向对象的数据库Ｏ２ＤＢ的模型与实现技术，Ｏ２ＤＢ是在面向对象的程序设计Ｃ＾＋＋的基础上，通过扩充数据库功能而实现的。这些数据库功能通常包括；对象数据模型，对象的持久性，存储管理，并发控制、安全检查，一致性约束，事务处理的本控制，面向对象的查询等；分别以Ｃ＾＋＋类库的形式加以设计和实现。     

面向对象的人工神经网络模拟

面向对象程序设计已成为９０年代程序设计的主流，它采用全新的方法来求解问题，本文在概述面向对象程序设计的基础上，着重介绍了用面向对象程序设计语言Ｃ（＋＋）来表示神经网络结构和学习算法，介绍了实现ＢＰ和ＢＡＭ网络的软件模拟技术，并给出了一个应用实例。     

一种扩充的面向对象 Petri 网

在面向对象的Ｐｅｔｒｉ网基础上，引入依赖消息，提出了一种扩充的面向对象Ｐｅｔｒｉ网（ＥＯＰＮ）模型，并以企业中的一项生产活动——ＰＣＢ元件贴装为实例，建立了描述这一活动系统的完整的ＥＯＰＮ模型，据此实现了物料分配的优化调度，构成了ＣＡＤ／ＣＡＭ集成系统中重要的一环     

面向对象的人工神经网络模拟

面向对象程序设计已成为９０年代程序设计的主流，它采用全新的方法来求解问题，本文在概述面向对象程序设计的基础上，着重介绍了用面向对象程序设计语言Ｃ＾＋＋来表示神经网络结构和学习算法，介绍了实现ＢＰ和ＢＡＭ网络的软件模拟技术，并给出了一个应用实例。     

基于数字图像处理的钢管自动识别计数系统开发

介绍了基于数字图像处理技术的钢管自动识别计数系统开发过程中的关键技术及相关算法，并结合面向对象的可视化集成编程系统Visual C＋＋6．0编制了钢管自动识别计数应用软件系统，实现了模式识别与数字图像处理技术在工业企业中的应用，具有较强的实用性。     

一种扩充的面向对象Petri网

在面向对象的Ｐｅｔｒｉ网基础上，引入依赖消息，提出了一种扩充的面向对象Ｐｅｔｒｉ网（ＥＯＰＮ）模型，并以企业中的一项生产活动－－ＰＣＢ元件贴装为实例，建立了描述这一活动系统的完整的ＥＯＰＮ模型，据此实现了物料分配的优化调度，构成了ＣＡＤ／ＣＡＭ集成系统中重要的一环。     

一种面向对象的形式化规范说明技术

介绍了一种新的面向对象的形式化规范说明技术ＶＤＭ＋＋，它是ＶＤＭ的一种扩充．并且通过一个实例说明如何应用ＶＤＭ＋＋技术对面向对象系统进行形式化规范说明．     

面向对象的协议半自动实现方法的研究与实践

本文在利用面向对象思想分析Ｅｓｔｅｌｌｅ语言的基础上，提出了面向对象的协议半自动实现方法。在此方法指导下，以Ｃ＋＋为中间语言，实现了Ｅｓｔｅｌｌｅ转换为Ｃ＋＋的编译器。本文介绍了Ｅｓｔｅｌｌｅ－Ｃ＋＋编码器的结构、特点及设计实现。     

基于VC++技术面向对象的水电站仿真培训系统

在面向对象技术的基础上，通过对某复杂的大型水电站系统的对象分析、分解与建模，建立了一系列的类来描述相应对象的属性和特征，从而实现了一种面向对象的水电站仿真培训系统，程序编制采用VC＋＋语言，鉴于VC＋＋的强大功能，该仿真培训系统界面友好，使用方便，并具有良好的可移植性和可扩充性。     

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