校园网用户身份统一认证系统的设计

通过对青岛大学的网络环境上运行的应用系统用户身份认证的情况进行分析,设计了一种适合于青岛大学统一身份认证系统的系统模型。该系统综合应用了轻重量级目录服务、Web Services、SOAP和XML技术,将基于理论上的解决方案应用到青岛大学校园网建设中,并具体分析和实现了校园网中B/S模式的应用系统的统一身份认证。     

统一身份认证平台的数据交换机制与实现

针对作为校园信息门户基础的统一身份认证平台信息管理,提出了通过构建基于轻量级目录访问协议的统一用户身份存储、Agent表数据同步和JMS数据发布的信息管理交换机制,实现校园网人员基础数据的整合,保证全局数据的一致性,为统一身份认证的实现提供了基础.     

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的校园网用户统一身份认证

结合校园网身份认证的实际应用,探讨如何基于目录服务,实现校园网用户的统一身份认证,并给出了具体的结构设计和在LINUX环境下的初步实现;从而方便校园网用户的使用,提高网络管理的能力,大大改进数字化校园网的应用效率.     

基于LDAP的校园网用户统一身份认证

结合校园网身份认证的实际应用，探讨如何基于目录服务，实现校园网用户的统一身份认证，并给出了具体的结构设计和在LINUX环境下的初步实现；从而方便校园网用户的使用，提高网络管理的能力，大大改进数字化校园网的应用效率．     

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。     

高校校园网统一身份认证系统的安全研究——以山西大学商务学院校园网为例

网络身份认证技术的逐渐成熟,为高校校园网实现统一身份认证技术和"一卡通"系统提供了网络基础.校园网的应用现状对身份认证系统提出了现实需求.本文将通过介绍山西大学商务学院校园网建设的总体设计思想与功能,针对校园网内用户访问量大且多数用户访问权限有限,以及身份认证系统在实施过程中存在的问题,提出基于802.1x的统一身份认证系统的安全管理方案.     

数字化校园统一身份认证平台研究与实现

随着数字化校园建设进程的加快,校园网运行的各种各样系统越来越多,网络安全和管理的身份认证显得更为重要,而传统的身份认证系统已经无法满足现实的需要。该文以广西师范学院门户网站管理为例,探讨基于统一身份认证的信息集中与管理平台的实现.     

OA系统身份认证的设计

文章提出基于LDAP的OA统一身份认证系统，进行详细系统设计，利用目录信息树结构对用户信息进行有效组织和管理，提供高效安全的认证机制．     

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.     

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     

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