GSM中归属位置寄存器数据库的设计与实现

基于某种移动通信系统（ＧＳＭ）数字程控交换机归属位置寄存器（ＨＬＲ）数据库系统的工作原理，对ＨＬＲ数据库内容特别是用户数据进行详细分析，针对用户数据容量大的特点，设计出模块管理的数据存储方案，并且通过定义数据特征描述表给出了独立于存储结构的用户访问模型和一组高效的ＡＰＩ函数．整个数据库设计方案数据冗余度小、操作简单快捷，在应用层较好地屏蔽了数据的存储结构，数据调整灵活．     

基于ADO.NET的通用数据访问模型的实现

利用面向对象和软件重用的思想,在ADO.NET基础上设计出数据库的通用访问模型和底层数据访问引擎,并就开发周期、响应速度、稳健性等方面进行了性能分析,给出了基于此模型的示例.采用该模型,程序员无需再关注底层数据访问细节而迅速地开发出基于数据库的.NET应用程序.     

基于Oracle的同位素分布式管理系统的设计与应用

设计了在Oracle环境下同位素管理系统分布式数据库的应用方案,重点研究了同位素管理系统的数据分布特点、分布式的数据库模型和拓扑结构、跨网域数据库访问技术、分布式查询与数据更新,并在同位素分布式管理系统中得到应用。     

分布异构网络环境下数据访问设计

在现有Web数据库访问技术的基础上 ,引入了分布式对象技术 :CORBA(CommonObjectRequestBrokerArchitecture) ,来构建基于CORBA的Web数据库系统的体系结构。本文论述了基于分布对象技术的Web数据库访问的对象表述、访问方法和设计过程 ,并应用公司职员档案管理系统实例进行分析和论述。     

VB下利用ADO实现对SQL Server的访问

本文介绍了Microsoft提出的一致数据访问技术UDA，重点介绍了它的高层数据访问接口ADO技术及其对象模型，并从应用的角度给出了VB下利用ADO实现访问SOL Server数据库的基本方法。     

MTS和MSMQ 技术及其应用

介绍了在分布式网络环境下，基于WEB的数据库访问时维护数据的一致性、完整性的方法，在Windows NT环境下，利用MTS来实现基于WEB的事务处理；分析了同步通信和异步通信的特点和基于异步通信模式的MSMQ技术，利用该技术在不可靠的网络环境下建立可靠的网络通信模型。     

数字程控交换机模块间信息传输的设计与实现

在分析数字程控交换机常用信息传输方式优缺点的基础上，提出了采用分布式组网方式实现ＪＳＵ２０００－０５数字程控交换机模块间信息传输的方法．系统采用该方式后，效率提高、可靠性增强，具有硬件结构统一、软件编程简单、实用性广泛等优点。     

一种异构数据库集成的方法

该文提出了一种利用联邦式数据库集成框架对应用系统进行数据库集成的方法，并结合一个虚拟实例详细描述异构数据库的集成，数据访问的过程，以及联邦式数据库集成框架的设计思想。     

电厂程控交换机改造及割接过程

本文介绍了哈里斯H20-20系列IXP2000型程控交换机在电厂中的应用。作者在本文中介绍了多台程控交换机运用不同信令联网调试的过程,以及新交换机投运前中继和用户线的割接步骤,并对汇接交换机数据库收集路由表做了分析。     

一种基于CCommand模板的数据库访问中间件的设计与实现

结合实际应用对MS ATL中CComm and模板的原理及实现技术进行了分析,设计并实现了一个基于CComm and模板类的数据库访问中间件,该中间件能实现在分布式环境下对多数据库的访问,并有效的解决了M IS系统中大用户量对数据库服务器访问的连接瓶颈问题,同时简化了编程的难度和复杂度,提高了软件开发的效率和质量.     

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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