基于AJAX技术的Web开发

Ajax异步通信技术是WEB2.0的核心内容之一,随着Internet的高速发展,以及Web应用程序的复杂性越来越高,传统的Web应用已经越来越难满足用户的需求。本文指出传统Web应用采用同步交互过程进行工作。着重分析了Ajax新技术的工作原理及其优势,阐明了Ajax技术异步交互的特点,研究分析Ajax技术自身的应用缺陷。Ajax技术可以使Web应用进行异步的交互,从而极大的提升用户体验和Web操作效率,为新时代的Web应用系统开辟了一个新的发展方向。     

基于Ajax的大量数据动态浏览的实现方法研究

针对传统Web应用对批量数据显示采取分页技术在页面切换过程中存在用户等待时间长的突出问题,提出了基于Ajax平台的异步传输方法,并详细讨论了基于Ajax的拖拽表格的设计方法,最后在基金支持项目高校组织人事管理信息系统上得到成功应用。结果发现使用拖拽表格显示大量数据有效减少了用户交互过程中的等待时间,提高了系统的响应速度。同时由于客户端分担部分业务层逻辑,从而减轻了服务器压力。     

基于Ajax 和PHP 数据分页的实现

Web系统经常会遇到大量的数据分页显示问题,传统的分页技术在提取数据时用户等待时间较长,利用Ajax技术结合PHP语言开发的Web系统在实现大量数据分页显示时,不需重载整个页面,通过更新局部数据即可,这样不但减少了用户等待时间,而且提高了查询效率。下面结合实例谈谈数据的动态分页显示的实现问题。     

基于jQuery+ASP.NET技术的简易信息管理系统

采用jQuery+ASP.NET技术,通过C#2010、jQuery1.9.1、JavaScript、DIV+CSS编程,使用弹出层方式、Ajax数据交互方法,实现Web2.0技术体制下数据表的添加、删除、修改、查询及分页导航等基本操作,开发出通用性较强的信息管理系统。     

Ajax技术在Web2.0网站设计中的应用研究

Ajax是Web领域的前沿技术,这种技术提供了新的互联网交互模型,并扩展了Web应用的能力。文中在介绍Ajax技术的工作原理、分析比较Ajax工作模式与传统Web工作模式区别的基础上,运用Ajax技术实现了网页的动态加载,用户的请求能更为迅捷地得到Web应用程序的回应。这样就避免了在网络上频繁地重复发送那些没有更新过的信息。相对于传统的Web应用,Ajax技术在丰富客户端的表现能力、改善用户体验中,表现了强大的交互性能。其原因在于Ajax技术实现了客户端与服务器间的数据通信,并提供了两者间异步通信的能力,因而降低了网络传输的数据量,均衡客户端与服务器间的负载。从而体现了Ajax技术提高系统效率与优化用户界面的优良性能。     

基于Ajax的Web富客户端设计

Ajax 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.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.     

基于SOAP协议和Ajax技术构建Web应用

Ajax技术从根本上改变了Web应用的交互模式,大幅度提高了访问速度.为了提高Web服务器的响应效率,改进Asp.net下Web程序的客户体验,研究Ajax技术在Asp.net环境下的具体应用.结合工程实践,详细分析了Ajax技术的基本原理,讨论了基于SOAP协议和Ajax技术在构建Web应用中进行通信的方法,给出了Asp.net环境下实现Web应用的具体实例、过程和技术要点.     

基于SOAP协议和Ajax技术构建Web应用

Ajax技术从根本上改变了Web应用的交互模式,大幅度提高了访问速度。为了提高Web服务器的响应效率,改进Asp．net下Web程序的客户体验,研究Ajax技术在Asp．net环境下的具体应用。结合工程实践,详细分析了Ajax技术的基本原理．讨论了基于SOAP协议和Ajax技术在构建Web应用中进行通信的方法,给出了Asp．net环境下实现Web应用的具体实例、过程和技术要点。     

Ajax技术及其在STRUTS应用中的实现

本文介绍了Ajax技术的原理及特点,并对采用STRUTS框架的Web应用中如何使用Ajax技术,通过异步数据交互的方式实现文本框输入渐进提示功能的方法进行了说明。     

基于Ajax技术的ASP.NET数据分页

在Web 应用系统中经常在页面中浏览大量的数据, 在系统的开发过程中必然要遇到数据分页的问题,ASP.NET 提供了多种数据分页处理方式, 但在技术上都是采用同步传输方式, 这种方式在提取数据时用户等待的时间较长, 服务器负担较重. 本文在分析传统数据分页解决方案的基础上, 以学生信息浏览查询为实例, 详细介绍了在ASP.NET 中基于Ajax 技术实现数据分页的方式. 结论是基于Ajax 技术的数据分页采用异步数据传输,分页时通过局部更新数据, 无需重新加载整个页面, 大大减少了用户等待的时间, 减轻了服务器的压力负担, 提高了数据查询效率.     

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。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.