分布式多数据库高校学籍管理系统研究与应用

针对目前高校学籍管理工作的现状和管理模式,提出了基于分布式多数据库技术的学籍管理系统的设计思想.该系统以SQLServer为数据库管理系统,充分利用校园网平台,将分布于不同物理节点的各个相关部门的数据库连接起来,构成一个多数据库网络学籍管理系统.     

基于GIS技术的深地震反射数据库管理系统

论述开发基于GIS技术的深地震反射数据库管理系统的必要性,在总结原Access深地震反射数据库的基础上,进一步将其改造为SQL Server数据库,并实现了基于GIS的深地震反射数据库管理系统.最后给出深地震反射数据库管理系统所具有的功能.     

Foxbase 索引文件分析和C语言的模拟实现

<正>Foxbase是目前微机上使用非常广泛的关系型数据库管理系统,其运行速度快,使用方便,用户界面友好,受到客户的欢迎.其索引文件的组织和维护优于其它微机数据库管理系统.1 数据库文件结构Foxbase的数据库包含了数据字典和数据两部分.具体结构为:     

数据库管理系统软件硬化

数据库管理系统软件硬化是数据库管理系统及体系结构研制的一个新方向。本文论证数据库管理系统软件硬化的必要性和可能性,综合论述数据库管理系统软件硬化的几种途径和结构型式,指出数据库管理系统软件硬化的发展趋势。     

基于Agent服务的分布式数据库系统

介绍了通过基于C/S体系建立中间件结构实现大型分布式关系型数据库管理系统的网络优化方案.应用该方案可以有效降低数据库管理系统临界性,提高应用程序可升级性并降低操作系统及数据库管理系统的系统管理员的工作强度.     

基于关系数据库优化技术的查询应用

Visual FoxPro是一种关系型数据库管理系统,具有强大的数据处理能力和界面开发能力,全面支持面向对象的可视化编程技术,是一个数据库应用程序开发的优秀工具.查询是数据库管理系统的核心操作,查询操作的优劣直接影响数据库应用程序的性能.通过SQL语句和设计查询程序,可实现良好的查询数据界面和条件灵活多变的查询要求.     

科研项目数据库管理系统的建立

Access数据库具有强大的数据处理功能,具有完整的数据库应用程序开发工具.运用Access数据库管理系统的开发功能设计的科研项目数据库管理系统,设计较为合理,有友好的用户界面,操作简单,使用方便,基本能满足用户的需要,为工作提供了方便.     

基于Web的信息系统安全研究

研究基于Web的信息系统的安全问题及如何充分并合理地利用操作系统、Web服务器和数据库管理系统所提供的安全设置,以有效地保证信息系统的安全性.利用应用程序所具有的灵活性,可以弥补操作系统、Web服务器和数据库管理系统的安全漏洞,结合某单位业务信息系统的案例,分别从操作系统、Web服务器、数据库管理系统、应用程序4个方面对安全问题进行分析,同时给出了建议.     

利用pb数据管道完成的数据管理系统

综合数据库管理系统为办公自动化提供了极大的方便,为了可以兼容以前的各种数据库文件,利用当前比较流行的数据库前端开发软件Powerbuilder的数据管道功能以及面向对象的程序设计思想,开发了这套数据库管理系统,可以减轻数据库管理人员的负担.     

构建医院现代化数字物流信息系统

医院物流信息系统能够全程跟踪管理医院药品、设备的购入、使用和消耗等各个环节,降低医院运营成本,提高工作效率和管理水平.利用Power Builder作为数据库前端工发工具,后台数据库用Sql Serve建立关系型数据库管理系统,设计运用客户/服务器（C/S）数据管理系统.用户通过操作前端的应用程序来检索,浏览,以及更新数据库内容等来实现管理,以提高效率.     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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