.NET 下 AJAX 技术的研究与应用

AJAX不是一种新的技术,而是将几种成熟技术结合在一起的交互式Web开发技术。研究了AJAX应用与传统的Web应用的交互过程和模式,分析了AJAX的工作原理,在.NET下实现了利用AJAX技术进行动态数据访问的应用。使用AJAX技术,避免了在服务器端和客户端大量重复数据的交互,一定程序上提高了Web应用程序的性能。     

在嵌入式系统中实现 AJAX 的动态网页技术

介绍两种在嵌入式平台上实现动态网页技术AJAX和CGI。然后重点介绍一款轻量级Web服务器——GOAhead Web Server。通过代码实例详细讲述在GoAhead WebServer平台上实现AJAX交互。最后通过改进代码和引入JSON插件来加强MAX数据交互功能,实现完整的AJAX应用。     

基于AJAX技术的Web应用架构分析

Web应用在界面易操作性方面的弱点是制约其广泛应用的重要因素,AJAX技术正是为了克服这些缺点而被提出的。它是web应用的一种新的方式,AJAX为浏览器与服务器交互较多,频繁读取数据的Web应用提供了一个很好的解决方案。本文论述了AJAX模型的架构及其关键技术,并分析了AJAX技术在实现过程中的优缺点及其安全性。     

基于AJAX技术的Web应用架构分析

Web应用在界面易操作性方面的弱点是制约其广泛应用的重要因素,AJAX技术正是为了克服这些缺点而被提出的.它是web应用的一种新的方式,AJAX为浏览器与服务器交互较多,频繁读取数据的Web应用提供了一个很好的解决方案.本文论述了AJAX模型的架构及其关键技术,并分析了AJAX技术在实现过程中的优缺点及其安全性.     

AJAX中数据传输的新技术——JSON

基于Web开发的AJAX技术将客户端和服务器端的同步交互通信方式改变为异步交互通信方式,改善了用户体验.AJAX应用中客户端与服务器端的数据传输技术有多种.JSON在数据构建和解析方面有明显的优越性,是AJAX应用中数据传输的不错选择.     

基于AJAX的富客户端技术及应用

AJAX即异步的JavaScript与XML,利用JavaScript、HTML、DOM技术进行Web富客户端设计,后台异步执行与服务器的交互,不会因为交互而中断用户对屏幕的操作,可提供更好的服务响应。AJAX使得基于Web的传统客户端设计,达到与单机GUI方式同样的效果,对基于Web的分布式系统设计产生了重要影响。通过与传统的Web开发方式进行对比,详细介绍了AJAX的核心技术和使用AJAX开发Web应用系统的基本原理。     

AJAX技术在J2EE数据交互中的研究

AJAX技术作为一种新兴的网络技术比传统页面刷新模式具有更好的性能和友好的用户体验,为开发高效的Web应用程序提供了解决方案。本文通过对AJAX原理和J2EE框架的深入研究,提出了利用AJAX技术在J2EE框架的MVC模型中进行数据交互的应用方案。达到了实际应用的需要。     

AJAX技术在Web系统开发中的研究及应用

基于AJAX技术,在Microsoft公司提供的ASP.NET2.0AJAX框架下,研究了Web应用的交互模式。探讨了AJAX的核心技术、工作原理及ASP.NETAJAX框架的优点,为AJAX的最佳实践提供了理论依据;将AJAX技术应用于天津机电职业技术学院OA系统的开发中,避免了系统完全刷新页面、用户交互不畅和服务器负担过重等问题。     

基于GWT技术开发AJAX应用的分析和研究

Web2．0是目前正在兴起的Web技术,包括流行的博客和AJAX等技术。AJAX技术是多种以往技术的综合,是有着广泛应用的新技术。AJAX在大多数浏览器中都能使用,而且不需要任何专门的软件或硬件。它是一种客户端方法,可以与．NET,J2EE,PHP,CGI和Ruby等脚本交互。AJAX在众多地方得到应用,如：Google Maps,Gmail和Genie Suggest。Google Web Toolkit（GWT）是Google推出的AJAX应用开发包,GWT支持开发者使用Java语言开发AJAX应用。介绍了AJAX技术的定义和原理,说明了为什么选用GWT技术开发AJAX应用程序,最后分析了GWT技术设计AJAX组件的方法和需要注意的地方。通过分析可以看出用GWT开发AJAX应用,上手容易,开发效率高,程序复用性好,开发出来的产品不需要考虑不同测览器的兼容性,比较适合目前越来越复杂的脚本开发,满足越来越高的用户体验要求。     

AJAX技术在网上购物系统中的研究与应用

AJAX是新出现的Web客户端构建技术,它面向异步消息通讯机制,利用它可以构建动态、快速、灵活的Web应用程序。分析了AJAX的技术及工作原理,提出了利用Ajax技术优化Web异步交互的方法,最后通过一个网上购物系统的例子说明了Ajax技术在Web异步交互方面的优越性。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。