EJB组件安全性技术的研究

本文讨论Java EE平台下开发、部署企业级信息系统所涉及的EJB组件安全性技术,深入分析EJB组件安全性体系结构,着重研究EJB组件在构建企业级信息系统中所涉及的三个主要安全性技术问题验证机制、授权机制和安全性通信.     

EJB技术研究及应用

Enterprise JavaBeans(EJB)技术是一个服务器端的组件体系结构，它使得用Java编写企业级分布式组件应用系统更加容易．本文以昆明有线宽带网互动开放服务平台为研究背景，介绍了EJB技术的基本概念，分析了EJB组件模型的体系结构、技术特点及应用．     

一种基于Struts+EJB框架的信息服务系统的设计与实现

EJB组件是一种服务器端组件的体系结构，Struts是MVS模式的实现框架。这里具体介绍了相关的EJB组件技术及Struts的体系结构，并通过一个项目实例，提出了struts＋EJB框架的设计方案，详细阐述了主要设计关键.     

基于Web的洪水预报系统

以JBuilder6．0为集成开发工具，基于EJB组件部署洪水预报系统业务逻辑，设计开发成功了基于Web的流域洪水预报系统，重点阐述了利用上述平台进行洪水预报系统设计和开发的关键技术。应用实践表明，本系统具有开放性、可靠性、安全性、透明性等特点，提供了分布式计算平台架构，可实现未来的流域洪水预报管理。     

分布式组件在地理信息系统中的应用

近年来,随着因特网技术和通讯技术的快速发展,地理信息系统在各行各业的应用也得到迅速发展.本文探讨了使用EJB组件模型进行网络地理信息系统数据集成的原理,提出了一种在Web环境下,对于日益复杂的分布式地理数据,相应采取分布式组件的处理方法.     

EJB技术研究及应用

EnterpriseJavaBeans(EJB)技术是一个服务器端的组件体系结构 ,它使得用Java编写企业级分布式组件应用系统更加容易 .本文以昆明有线宽带网互动开放服务平台为研究背景 ,介绍了EJB技术的基本概念 ,分析了EJB组件模型的体系结构、技术特点及应用     

WEB综合查询系统设计

J2EE平台开发技术主要用于开发基于Internet上多层结构应用系统,遵循J2EE应用编程模式开发的应用系统开发效率比较高、可重用性好、可移植性强而且易于维护,EJB组件也简化了应用程序的编写.WEB综合查询系统正是基于这种编程模式开发出来的产品,系统体现了该模式的主要特点.     

基于J2EE的移动机器人互联网远程控制的实现

利用互联网这一廉价而便捷的通讯手段进行移动机器人的远程操作，为移动机器人的进一步普及应用创造了条件．本文在J2EE环境下，利用EJB组件及JSP技术，采用MVC的设计模型构建了基于互联网的移动机器人远程控制系统．该系统具有平台无关性、易于扩展和维护等特点．     

基于J2EE技术的企业信息系统的开发

通过对一个企业内部信息系统开发原型的研究，阐述基于J2EE的信息系统开发的基本方法、层次结构设计以及开发部署过程。并对EJB、JavaBean以及JSP的设计过程作了较详细的说明。最后给出优化系统性能与伸缩性的准则与建议。     

J2EE在IP综合网管系统中的应用研究

从分析IP网管系统的现状及存在问题入手,对比传统IP网管系统的体系架构,阐述了采用J2EE平台下的EJB组件开发多层次、分布式IP综合网管系统的优点,提出了采用J2EE平台的Session Facade模式和TransferO bject模式相结合的具体实现方案,有效改善了传统IP网管系统在开放性、可移植性和扩充性等方面的性能.     

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