使用AJAX和JAVA Servlet技术实现WEB系统用户监听功能

通过一个实际系统的建设,提出了一种使用AJAX和JAVA Servlet实现WEB系统用户监听功能的思路.使用AJAX异步刷新的特性和JAVA Servlet缓存技术实现的这种WEB系统用户监听功能,能够对用户登陆、登出系统进行有效的监听,既避免了大量刷新操作对服务器资源的消耗,又减少了对数据库频繁读写的依赖,达到了良好的使用效果.     

AJAX技术在WEB系统中的应用

AJAX是建立在JavaScript和XML技术之上的一门综合性技术,其工作原理实现对网络信息传递的异步交互过程。在WEB系统中,AJAX技术具有传统技术无法比拟的优点。本文以blog中的用户调查投票系统作为程序的实例,介绍了AJAX技术在WEB系统中的应用。     

B／S结构中AJAX技术浅析

随着Web技术的发展，传统的交互方式用户体验感较差。Web2．0的核心就是AJAX技术。AJAX技术解决了传统Web页面灵活性与交互性不足的缺陷，提高了互联网的效率与性能。本文通过对B／S结构中的不同技术的对比，即使用ASP．NET技术和AJAX技术分别读取浏览器端的文本文件的内容，然后把它显示在WEB页面上。并给出了两种技术实现的具体步骤与方法，从而给出了AJAX技术的优势所在．从而形象的了解了AJAX技术的原理，以及使用AJAX有什么技术优势。     

基于AJAX开发WEB在线交流平台

文章分析了传统的WEB在线交流平台的优缺点,针对在线交流平台的需求,采用AJAX和.NET的XML WebService、Web高速缓存技术,开发了基于AJAX的WEB在线交流平台。AJAX页面无刷新技术的使用,合理的避免了页面的整体刷新,从而提升了用户体验,提高了系统性能。     

基于AJAX技术应用框架研究和应用

AJAX技术为WEB系统开发人员提供异步的通信方式.介绍了AJAX技术的实现机制和工作原理,描述一个适合WEB系统开发的AJAX框架,并且利用此框架实现WEB系统中典型应用.     

AJAX在Web中的异步交互应用

通过AJAX技术在社区系统的具体应用，阐明了AJAX技术在Web异步交互方面的优越性。在用户和服务器之间引入一个AJAX引擎，可以消除Web应用的开始一停止一开始一停止的交互过程．使用委托和门面模式相结合的复合模式，隐藏了服务器端逻辑的具体实现，降低了因页面直接访问服务器逻辑而引发安全问题的可能性．对基于AJAX模式下开发Web应用具有一定的实用价值．     

基于AJAX技术的MVC模式WEB应用

MVC模式很好的解决了当前WEB应用开发的种种弊端,AJAX技术则大大改善了WEB应用的用户体验.研究了MVC设计模式后,本文在MVC模式基础上,加入AJAX技术,构建一种新的WEB应用模型,并在具体应用中实现.     

三维人体数据管理信息系统的设计与实现

分析三维人体数据管理系统的应用需求和数据来源．根据对性能的需求不同的和面向对象不同，选择整个系统子功能的实现技术．采用Delphi6．0实现了个体背景资料、三维人体数据等各种信息的管理；运用JSP＋Servlet＋JavaBean技术实现了不同用户的查询需求、文件的上传下载及体型分析功能．     

基于JAVA WEB START的污染源在线监测系统研究

本文首先分析JAVA WEB START的特点,结合污染源在线监测系统的具体应用,阐明JAVA WEB START发布程序的工作原理和技术。其次以污染源在线监测系统为例说明具体实现方法。最后在不依赖WEB浏览器的前提下,运用JAVA WEB START,SWING等技术通过网络进行安全发布和升级,该系统能达到令人满意的效果。     

一种分布式智能网络管理系统

传统的中心网络管理应用已不能适应Intranet／Web的发展，局域网结构由共享网络到交换网络的转换要求实现分布式和智能的网络管理．本文针对财政系统网络管理的特点，采用了CORBA，JAVA，WEB，分布式RMON等新技术，设计并实现了基于财政系统的分布式智能网络管理．     

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