重点学科管理面向对象数据库设计思想

充分利用面向对象方法的优点实现数据库的数据一致性、完整性及数据安全性．整个项目使用面向对象的软件工程(OOSE)开发方法和数据库用户定义数据库模式的思路(面向对象数据库设计)．用户可以使用面向对象的方法定义任何一种DBMS数据库，本项目使用的是SQL Servet 2000关系数据库．     

面向对象的图象数据系统设计

面向对象的图象数据库系统ＯＩＳＤＢＳ不仅对图象数据本身，而且对图象内部结构以及相互联系提供管理．讨论了面向对象的图象数据模型、在系统中为图象数据提供封装的图象代数运算、以及数据模式设计、存储管理、面向对象的数据库模式向关系模式的映射等数据库技术的各个方面．     

基于国标的地学数据库智能建模方法

为方便地学数据库设计，缩短建库周期，避免建成的数据库结构不能更改以及使建成的数据库能更好地为地学信息共享服务，提出了地学数据库的智能建模方法．该建模方法采用国家标准分类术语代码辅助设计技术和数据字典技术来辅助数据库设计，对数据模型进行标准化设计，并在设计过程中提供了相关的术语代码字典以支持数据库的标准化数据采集，促进了地学信息共享，同时提供了相应的数据库模型字典，为后期的数据库结构的变动提供支持．     

应用字典技术的研究

应用字典（AD）是面向对象软件开发过程中为了实现动态生成用户界面、更有效的使用和维护数据库中各业务实体表而使用的一项中央活动数据字典技术,是统一的信息仓库．其基本思想是把业务实体表的定义放到两张字典表中．使用该技术的最大优点是可以根据自定义的规则和信息来动态生成维护（包括查询、添加、删除和修改）业务实体表的用户界面．开发人员不必设计、编码和测试每个维护基础袁的界面．并且,由于用户界面基于相同的规则生成,使得软件稳定性加强,从而有效的缩短软件开发时间、降低开发成本以及提高软件质量．     

DFD数据字典管理工具的分析与设计

利用生命周期法和面向对象技术，开发出一个DFD数据字典管理工具DDMTS。文中阐述了DDMTS的数据结构，功能及系统特点。     

面向对象数据库模型研究

面向对象数据库代表了数据库未来的发展方向,笔者在阅读大量相关文献的基础上,研究探讨了面向对象数据库模型,分析了其对象标识,类层次、多态性和模式演进等特性。相信对从事相关研究的同行有着重要的参考价值。     

VFP学习纵横谈

Microsoft Visual FoxPro（简称VFP）是近几年中国最流行的面向对象的关系数据库管理系统（RDBMS），其引入了大型数据库管理系统独有的“数据库”、“数据字典”、“存储过程”、“参照完整性”、“触发器”、“缓冲”等机制，使数据库的使用与管理更方便；也是一个32位的数据库开发系统，支持可视化编程和面向对象程序设计等第四代语言（4GL）特性的应用程序开发工具。它能运行于Windows9X／NT／2000／XP等操作系统之上。具有良好的跨平台特性；还有许多优势，一直被不同层次的程序员用于设计和开发各种类型的管理信息系统或进行数据库的维护。     

面向值和面向对象集成的数据模型

面向值和面向对象数据模型的集成是当前数据库领域一个活跃的研究方向。文章为演绎面向对象数据库提出了一个面向对象的形式化数据模型——ＯＤＭ，它在同一数据模型中把面向值的数据和面向对象的数据有机地统一起来     

C#对象持久化研究及应用探讨

本文简要回顾了面向对象的核心理论以及简要提出了面向对象技术和关系型数据库技术结合的方式。最后根据在使用结合使用这两技术时存在的有关数据不同表示模式间转换的问题，提出了一个基于C#对象持久化技术的解决方案。同时．以此解决方案为蓝图开发了DBTranslate系统，并详细描述了此系统的功能和应用。     

重点学科管理面向对象数据库设计思想

充分利用面向对象方法的优点实现数据库的数据一致性、完整性及数据安全性.整个项目使用面向对象的软件工程(OOSE)开发方法和数据库用户定义数据库模式的思路(面向对象数据库设计).用户可以使用面向对象的方法定义任何一种DBMS数据库,本项目使用的是SQL Server 2000关系数据库.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

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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