身份与权限体系关键技术的总体设计与实践

高校信息化建设中普遍存在对用户身份和权限体系进行统一管理等问题,对上海交通大学统一身份认证和授权系统的总体设计,以及关健技术进行了探讨.     

基于LDAP的Web统一身份认证的研究与实现

结合实例介绍了基于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的统一身份认证管理系统的设计与实现

文章介绍了一个支持用户单点登录的统一访问控制系统,系统基于LDAP目录服务,它将各种应用系统的身份认证结合在一起,实现了用户统一管理的安全访问。系统采用优化技术,有效的解决了大量用户访问LDAP时的瓶颈问题。     

分布式赋权的统一身份认证系统模式研究

分布式赋权的统一身份认证系统是在统一身份认证系统技术基础上,借鉴集中式权限管理的数据存储模式,变用户权限集中管理为分布式管理的用户与权限管理系统。它解决了统一身份认证系统没有用户权限管理、集中式权限管理又不为信息敏感系统所信任,以及人为的权限管理任务转移可能导致管理效率低下等问题。     

基于统一身份认证的Moodle网络教学平台用户管理

在不断深入的数字化校园建设中,用户信息的管理成为重要而迫切的问题。以LDAP为核心的统一身份认证技术为用户信息管理提供了重要支持。通过实施校园网统一身份认证系统,并将Moodle网络教学平台的用户管理整合进去,实现Moodle用户的统一管理和单点登录,为简化平台用户管理、提高平台的易用性起到了重要作用,是推广平台使用的重要措施。     

RUP在图书馆管理系统开发中的应用

由于图书馆读者需求的不断变化导致了系统开发和用户需要之间的不一致，为了提高系统开发效率、保证开发过程的有效性，探讨了统一软件过程和统一建模语言在图书馆信息管理系统开发中的应用。     

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。     

统一信息互动平台的研究与实现

分析统一信息服务的应用基础,提出统一信息平台体系结构、技术实现和模块建立的方法,为企业和用户打破人力、空间、时间限制实现对网络与信息资源的融合统一应用,把单一的、单向的主动服务型提升为在线式互动型服务,建立企业统一信息服务体系。     

统一身份认证及其在校园网中的应用

基于校园网的应用系统的建设带来一个用户需要许多账号和密码的问题,使用统一身份认证系统可以实现用户单点登录、多种方式认证.对统一身份认证服务的组成和实现进行了论述,并给出了一个使用统一身份认证的校园门户的结构框架.     

基于.net三层架构的用户服务系统的设计与应用

基于.net三层架构的统一用户服务系统主要包括统一认证和组织结构管理两部分功能.统一身份认证及组织结构管理系统的目标主要包括:提供统一的、完善的、易用的用户认证和组织结构管理平台;为现存的和即将开发的各应用系统提供一个跨平台的认证授权信息管理接口,解决了传统管理系统中组织结构混乱、用户使用不便、安全性差等问题;完善用户管理功能的同时,提高统一企业平台的安全性,抵御潜在的安全风险.     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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