A database application generator for the www

Abstract

This paper describes a database application generator for the WWW called GWB. GWB contains a compact language that adds control structures and database access constructs to HTML, a compiler that translates HTML‐like source templates into ODBC code and utilities for authentication and session management. It is designed to ease the expertise requirement needed for developing Web‐based intranet and internet database applications. This paper surveys the current approaches; describes the language and its support for authentication and session management; and gives an internet application using GWB. This paper also discusses future enhancement in terms of persistent database connections and server‐side client state persistency.     

As I Sit Studying: WWW-Based Reference Services

Abstract

This article reports on the current state of reference services on the World Wide Web (WWW). It explains what a WWW-based reference service is, describes several models of handling requests, and explores the impact of these services on traditional reference services. Based upon anecdotal information the author concludes that, to date, Web-based reference services have had little impact upon traditional reference services.     

基于Web技术的委托网络管理

本文利用现有的Ｗｅｂ技术，提出了一种实时委托网络管理的方案，该方案通过对通用Ｗｅｂ浏览器、服务器的扩展、来传送和处理请求，响应，事件等网络管理信息。     

WWW与基于事例推理(CBR)的岩土工程智能CAD

基于事例的推理是近些年发展起来的一项人工智能技术,由于它符合专家求解问题时的认知原理,在许多领域得到了广泛的应用;Internet的迅猛发展使得全球的信息得以共享。基于事例推理的CAD同Internet结合在一起,必将对岩土工程设计领域产生深远的影响,而这种结合也正是基于事例的推理技术发展的一个重要方向,通过WWW、多媒体等技术应用到这种结合中,还可以实现远程设计、协同设计、多工种配合设计等,达到提高岩土工程设计水平和加快设计进度的效果。     

Supporting the WWW in Wireless Communications Through Mobile Agents

Mobile computing is considered of major importance to the computing industry for the forthcoming years due to the progress in wireless mobile communications. We present a proxy-based architecture that manages to accelerate Web browsing in wireless Customer Premises Networks (CPN). We discuss how such an architecture is implemented using the IBM Aglets framework for mobile agents. The suggested architecture relies heavily on proxy caches – maintained in base stations – which are relocated to follow a roaming user in other control areas (clusters of cells). The cache management scheme involves relocation of full caches to the most-likely-to-be visited control areas, but also fractions of the cache to less-likely-to-be-visited neighbours. A movement prediction algorithm, based on a learning automaton, is used to determine the future location of the terminal. The discussed architecture components have been implemented as Aglets to allow for the efficient introduction of the service in a CPN infrastructure.     

第六讲 WWW和Java

本文主要介绍了上海热线网络服务的一些知识 ,包括主页 (Homepage)、WWW浏览查寻、HTML语言和Java语言等。     

一种基于WWW的虚拟数据库的解决模型

虚拟数据库技术是随着数据库技术发展新出现的一种前沿技术。它结合了信息检索和关系数据库技术各自的优点,对半结构化的数据查询有着非常广泛的应用,本文提出了基于WWW的虚拟数据库的模型解决方案。     

What do web users do? An empirical analysis of web use

This paper provides an empirical characterization of user actions at the web browser. The study is based on an analysis of 4 months of logged client-side data that describes user actions with recent versions of Netscape Navigator. In particular, the logged data allow us to determine the title, URL and time of each page visit, how often they visited each page, how long they spent at each page, the growth and content of bookmark collections, as well as a variety of other aspects of user interaction with the web. The results update and extend prior empirical characterizations of web use. Among the results we show that web page revisitation is a much more prevalent activity than previously reported (approximately 81% of pages have been previously visited by the user), that most pages are visited for a surprisingly short period of time, that users maintain large (and possibly overwhelming) bookmark collections, and that there is a marked lack of commonality in the pages visited by different users. These results have implications for a wide range of web-based tools including the interface features provided by web browsers, the design of caching proxy servers, and the design of efficient web sites.     

网络课程的现状及发展方向初探

自20世纪90年代以来,网络技术日新月异,互联网逐渐应用于教育领域.本文在调查网络课程现状的基础上,说明网络课稃的一般形式;通过对课程内容、在线资源以及教学活动组织等方面的分析,对网络课程的前景做了展望.