一种安全Web应用的构建

讨论实现安全的Web访问问题 ,其中包含实现基于SSL协议的服务器和客户端认证 ,X .5 0 9证书的申请、签发和管理 ,以及证书用户身份的认证与授权等相关问题 ,并针对LDAP服务器应用于公钥体系所遇到的一个条目多个证书问题进行了阐述 .系统以ApacheTomcat服务器作为系统实现的原型基础 ,并辅以JAVA平台的安全工具和API来实现     

基于LDAP的多媒体教学资源库系统的实现

讨论了LDAP协议,并描述了采用LDAP实现的一个多媒体教学资源库系统.该系统可快速响应用户对多媒体教学资源的查询请求,对教师备课、学生自学提供强大的在线支持;可与网上教学辅导系统相连接,为基于Internet的远程教育提供服务.     

轻量级目录访问协议分析与安全检测

轻量级目录访问协议(LDAP)是一种新兴的目录标准,它在网络迅速发展的今天已被越来越多的部门所使用,因此它的安全问题成为网络研究的焦点.文章介绍了LDAP协议的基本概念和特点,分析了LDAP协议数据单元的编码规则,在此基础上编制了安全探测软件,最终达到了安全检测的目的.     

统一认证下的校园网语音通信系统

在openh32 3基础上设计并实现了校园网语音通信系统 .重点论述了如何解决基于LDAP的统一认证问题 ,如何使用LDAP ,gatekeeper轮转法解决服务器的负载等问题     

基于LDAP的统一身份认证的设计与实现

首先介绍LDAP的基本概念和特性,并且对目录数据库和关系型数据库进行了对比。分析了LDAP的安全模型。在此基础上,设计并实现了Gentoolinix2.6平台下基于LDAP的erp系统统一身份的认证,详细描述了系统的几个主要功能模块的划分、设计和实现。     

基于LDAP的统一身份认证系统的实现

结合兰州理工大学“基于LDAP的统一身份认证系统”的实例介绍了基于LDAP的统一身份认证系统的完整实现过程．系统采用LDAP（lightweight directory access protocol,轻量级目录访问协议）存储用户认证信息,可以构建复杂的分布式目录结构．在LDAP存储模型的基础上,系统实现了统一的用户认证信息管理系统,可以通过统一的界面和逻辑对用户认证信息进行集中管理．     

基于LDAP协议实现统一的网络管理研究

基于网络上信息存储方式的不统一及其所面临的困难 ,结合复旦大学校园网的特点 ,在深入研究LDAP协议的基础上 ,给出了一套跨协议认证的解决方案 ,提出了关于同步问题的两个模型和基于CSN方法的实现办法     

基于安全协议的智能灌溉系统设计

针对现有智能灌溉系统中数据交互的安全问题,设计了一种基于安全协议的智能灌溉系统.智能灌溉系统以此安全协议为核心,并设计身份认证模块、签名模块、签名验证模块,实现了安全协议.最后对智能灌溉系统进行实验与仿真,实验结果表明基于安全协议的智能灌溉系统运行效率高,在智能灌溉装置计算能力和传输能力较弱的情况下具有良好的适用性和安全性.     

LDAP协议下多模型融合校园认证系统的研究与实现

建立一个统一认证系统,对网络用户实行统一管理、认证和授权是数字化校园建设中的一个重要内容。在介绍了统一认证模型类型以及用于存放认证信息的LDAP目录服务协议的基础上,结合当前校园网建设的实际情况,设计了一个基于LDAP协议的校园网统一身份认证系统。在统一认证的过程中,应用不同访问模式和传输技术,通过多模型融合方式实现了邮件服务、互联网访问控制、VPN服务等典型应用的统一认证服务,并将该系统模式推广到校内的一些专用网络应用中,为后续的一站式认证奠定了基础。     

基于目录服务的数字化校园统一身份认证

本文首先分析高校数字化校园中统一身份认证系统建设的必要性,简要地介绍了LDAP协议及其相关的技术,提出了基于LDAP的校园网统一身份认证机制实现了对校园网用户统一身份管理统一身份认证。     

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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