J2EE架构下网络选课系统的设计和实现

J2EE是一种利用Java2平台来简化多级企业解决方案的开发、部署和管理的体系结构，使得部署在J2EE平台上的多层应用能够实现高可用性、安全性、可扩展性和可靠性．对实际应用的J2EE分层结构进行了详细分析，给出一种J2EE架构下的多层应用模式。并通过网上选课系统的设计详细介绍了该模式下的具体开发方案.     

Java web流行框架的了解与应用

J2EE是一种利用Java 2平台来简化企业解决方案的开发,部署和管理相关的复杂问题的体系结构。J2EE技术的基础就是核心Java平台或Java 2平台的标准版,J2EE对EJB（Enterprise Java Beans）、Java Servlets API,JSP（Java Server Pages）以及XML技术的全面支持,它由一整套服务（Services）、应用程序接口（APIs）和协议构成,它对开发基于Web的多层应用提供了功能支持。     

三国两晋南北朝数学“推类”思想散论

J2EE技术是构建基于Web系统的标准平台和环境,具有跨平台、分布式、多层结构及可复用的特点,可以便捷的开发多层的企业应用。本电子政务系统的实现基于J2EE技术,整个系统架构在工作流之上进行审批流转,工作流系统应用能够充分发挥J2EE技术的优势,提供高度的可靠性、可扩展性和安全性。     

基于J2EE模式的开发应用

基于B/S三层架构模式目前基于J2EE模式普遍应用到网站的设计开发,所设计系统可采用先进的三层结构模式的服务器、服务器结构,它是传统的客户、服务器结构的发展,代表了企业级应用的未来,典型的有B/S架构下的应用。三层架构包括界面层、逻辑层和数据层,其具有如下优点:1.系统结构清晰、逻辑与表达分离;2.性能好,能满足大规模并发访问的要求;3.修改维护方便、容易扩展;4.易于实现负载均衡。J2EE开发模式J2EE提供了一个企业级的计算模型和运行环境用于开发和部署多层体系结构的应用,它通过提供企业计算环境所必需的各种服务,使得部署在J2…     

基于J2EE核心模式的组合Web框架研究

在研究多种J2EE Web框架和J2EE核心模式的基础上,提出了一种基于J2EE核心模式的组合Web框架--CWFBP(Composite Web Framework based on core J2EE Patterns)模型.框架采用分层体系架构,集成了开源的J2EE Web框架和持久层框架,并在表示层和业务层综合应用多种J2EE核心模式,实现了层次之间和业务层内部的松散耦合,提高了系统的可复用性和开放性.研究了N层计算模式、AJAX和正则表达式等在模型中的应用.采用CWFBP进行软件架构,设计实现了三峡--葛洲坝水利枢纽通航调度系统.系统运行实践表明了CWFBP的正确性和有效性.     

基于Struts+Spring+Hibernate的Web开发框架及实现研究

介绍了Struts、Spring和Hibernate三种开源框架,根据J2EE的分层结构,结合Web应用的特点,整合这三种框架,设计出一个适合企业Web应用的J2EE通用架构。在此架构的基础上,通过一个简单应用实例,实现了该架构在Web系统中的应用。     

基于XML和J2EE的Web彩票发布系统

介绍了XML以及基于XML的3层C/S模型,分析了传统Web信息发布的缺点以及XML技术用于实现Web信息发布的优点.提出了应用XML技术实现Web信息发布的方法,给出了利用XML实现彩票发布系统的模型,并通过彩票发布实例展示了基于XML的Web信息发布的J2EE具体实现.     

基于J2EE的分布式体系及应用

以分布式体系结构为核心，介绍其基本原理。着重介绍J2EE架构及相关技术，并描述一个基于J2EE应用系统的模型。对该模型的设计模式和其中业务逻辑的封装和实现进行详细论述。     

基于Web Services的企业电子商务应用集成技术的设计与实现

在分析Web Services的体系结构和关键技术的基础上,采用基于J2EE的Web Services技术,结合标准的Web协议(HTTP、SMTP等)和XML、SOAP、WSDL、VDDI等一系列标准,给出一个企业电子商务应用集成技术的设计与实现.     

基于J2EE的专家选调系统的研究与应用

J2EE是当前建立和开发各种Web应用的主流平台,MVC(模型-视图-控制)体系结构是当今设计交互式应用的事实标准。文中通过J2EE体系结构框架分析,结合Struts MVC在J2EE Web中的应用,通过用户表示层、业务逻辑层和控制处理层等层次的明确划分,阐述各层的功能作用以及层与层之间的关系,并针对具体业务给出了实现的部分具体内容,介绍了J2EE环境下开发专家选调系统的具体方案。     

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.     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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