基于Ajax的新闻搜索引擎

Ajax是Web2．0的核心技术之一,但它并不是一门新的语言或技术,实际上是几种已经在各自领域大行其道技术的强强结合,基于Ajax可以构建出更为动态和响应更为灵敏的Web应用程序。文章给出了AJAX的概念、特点。介绍了其中的关键技术。并以”新闻搜索引擎”为实例,探讨Ajax在Web开发中的应用。     

基于数据岛及AJAX技术的系统研究与实现

在WEB应用的背景下,针对系统可扩展性不强、开发难度大、系统耦合性等方面的不足,提出了一种基于数据岛技术与AJAX、JavaScript技术相结合进行WEB系统应用的方法,通过对系统的设计实现,得出利用上述技术实施系统的可行性,最终得到简单、易行、层次分明、开发周期较短的WEB系统.     

Ajax技术在机房排课系统中的应用

Ajax是一种异步交互式的Web应用开发技术。文章分析了Ajax技术的工作原理,并介绍了其在课表修改等功能中客户端无刷新更新页面的应用,最后给出了系统在jQuery框架下的实现方法。     

冷静分析、正确使用AJAX技术

介绍了一种Web开发技术——Ajax,该技术综合JavaScript、XHTML和CSS、DOM、XML和XSTL、XMLHttpRequest等多种技术的综合应用所形成的一种新的设计方式。并且深入剖析了其优缺点,得出了要理性应用Ajax的结论。最后对使用Ajax的情况做了建议。     

Tools for constructing pseudo-3D space on the WWW using images

Recently, due to advancements in virtual reality and computer graphics technologies, a virtual space that looks as real as a real space has been constructed. Accordingly, there are many studies that employ virtual spaces to support human communication and remote working. Until now, the virtual space employed by these studies has been composed of geometric models. Since the real space is very large and there are a lot of objects in the real world, the cost of modeling the real space is very high. In our previous paper,¹⁰⁾ we proposed a method for building a virtual space using image data, named theimage based non-rendering (IBNR), in order to cut down the cost. In this paper, we explain the design and implementation of the tools which we implemented to construct virtual spaces based on IBNR. With these tools, it is easy to construct and renew a large-scaled virtual space based on the real space. Takefumi Ogawa: He received his B.E. and M.E. degrees in Information Systems Engineering from Osaka University, Osaka, Japan, in 1997 and 1999, respectively. Currently, he is a Research Associate of the Infomedia Education Division, Cybermedia Center, Osaka University. He is a member of IEEE, IEICE, IPSJ, and VRSJ. His research interests include virtual reality systems and augmented reality systems. Masahiko Tsukamoto, Ph.D.: He received his B.E., M.E., and Dr.E. degrees from Kyoto University, Kyoto, Japan, in 1987, 1989, and 1994, respectively. From 1989 to February 1995, he was a research engineer of Sharp Corporation. Since March 1995, he has been an Assistant Professor in the Department of Information Systems Engineering of Osaka University and since October 1996, he has been an Associate Professor at the same department. He is a member of seven learned societies, including ACM and IEEE. His current research interests include database systems, knowledge-base systems, and distributed computing systems.     

在一个网页上交替显示多页内容

如何使上网者在浏览Web页面时,不用滚屏,不用开新窗口,只需移动鼠标指针到不同的链接点时,立即在同一屏交替显示不同的图像和相关文字。本文介绍了用JavaScript鼠标事件驱动实现的方法。     

基于AJAX的Web开发模式的研究

AJAX技术作为一种新的web开发模式已受到很多开发者的青睐,成为现今Web开发的热门。本文从AJAX的核心技术和原理出发,详细描述了AJAX在web开发中的应用。     

SearchPad: explicit capture of search context to support Web search

Experienced users who query search engines have a complex behavior. They explore many topics in parallel, experiment with query variations, consult multiple search engines, and gather information over many sessions. In the process they need to keep track of search context — namely useful queries and promising result links, which can be hard. We present an extension to search engines called SearchPad that makes it possible to keep track of ‘search context' explicitly. We describe an efficient implementation of this idea deployed on four search engines: AltaVista, Excite, Google and Hotbot. Our design of SearchPad has several desirable properties: (i) portability across all major platforms and browsers; (ii) instant start requiring no code download or special actions on the part of the user; (iii) no server side storage; and (iv) no added client–server communication overhead. An added benefit is that it allows search services to collect valuable relevance information about the results shown to the user. In the context of each query SearchPad can log the actions taken by the user, and in particular record the links that were considered relevant by the user in the context of the query. The service was tested in a multi-platform environment with over 150 users for 4 months and found to be usable and helpful. We discovered that the ability to maintain search context explicitly seems to affect the way people search. Repeat SearchPad users looked at more search results than is typical on the Web, suggesting that availability of search context may partially compensate for non-relevant pages in the ranking.     

在JavaScript语言中实现ORM的一种方法

本文阐述了一种在JavaScript语言中实现ORM的一种方法,分析了流行的ORM框架及其原理,具体介绍了实现原理和范例。     

嵌入式GPRS系统的设计与实现

文中介绍设计的系统以Xscale270和嵌入式Linux为平台,基于BenQ M22模块2.5代标准的GPRS无线通讯系统的硬件和软件方面的研究与设计。系统采取B/S结构,HTML及JAVASCRIPT等网页脚本语言的应用,应用嵌入式Web服务器BOA和数据库SQLite技术,实现登录WEB网页,远程控制短信发送与接收,实现通讯录、短信录入数据库。系统能够实现短信收发、电子交易,远程无人值守系统的测控。