面向ASP模式的塑料注射成型CAE系统

随着Internet和电子商务的迅猛发展,一种应用软件的新模式:ASP也逐渐凸现。文章构造了一个面向ASP基于Web的远程塑料注射成型CAE系统,详细介绍了系统的构造方法和关键技术。     

一种基于词典的搜索引擎系统动态更新模型

基于词汇标注的特征项提取方法是中文信息处理的有效方法,但词汇的析取是基于词典的,词典的涵盖程度决定了词汇切分的准确率,因而不断地学习新词汇、动态地维护词典,使整个中文信息处理系统具有自适应性和动态性就成了一个关键问题,以搜索引擎系统为例,提出了一种基于词典动态变化的搜索引擎系统更新理论模型和实现模型,相关实验表明,该模型对缩短搜索引擎信息库的更新时间、提高查询准确率等方面十分有效。     

2010世博会:上海城市发展的重要契机——法国巴黎八届世博会的借鉴

2010年上海世博会主办权的取得,具有相当重要的历史性意义,中国开启了向世界展示其独特魅力的崭新舞台。本文通过对八届巴黎世博会的解读,分析巴黎世博会的举办对城市发展的意义,探讨在2010年上海世博会的背景下,推动上海城市未来发展的思路,希望对上海城市的未来发展在理念上能够有所裨益。     

A Pedagogy of Play: Integrating Computer Games into the Writing Classroom

Traditional distinctions between work/play and classroom/gamespace create barriers to computer games’ integration into academic settings and the writing classroom in particular. For a writing class, the work/play distinction often relegates games to an object of analysis in which students critique the games but have little invested in the gameplay itself. After examining briefly how historical changes in education created these distinctions, we offer an alternative position that places play and gamespace within the realm of the classroom. In so doing, we open up a gap for computer game theory to inform the pedagogy that can be practiced in a writing classroom. We show one such example of game theory informing writing pedagogy—the theory of emergent gaming. We then offer an example of an enacted emergent pedagogy in which students play the massively multiplayer online role-playing game World of Warcraft throughout the term, composing self-determined, rhetorically focused writing projects informed by play and written for other game players.     

Information gathering and searching approaches on the Web

The information accessible through the Internet is increasing explosively as the Web is getting more and more widespread. In this situation, the Web is indispensable information resource for both of information gathering and information searching. Though traditional information retrieval techniques have been applied to information gathering and searching in the Web, they are insufficient for this new form of information source. Fortunately some Al techniques can be straightforwardly applicable to such tasks in the Web, and many researchers are trying this approach. In this paper, we attempt to describe the current state of information gathering and searching technologies in the Web, and the application of AI techniques in the fields. Then we point out limitations of these traditional and AI approaches and introduce two aapproaches: navigation planning and a Mondou search engine for overcoming them. The navigation planning system tries to collect systematic knowledge, rather than Web pages, which are only pieces of knowledge. The Mondou search engine copes with the problems of the query expansion/modification based on the techniques of text/web mining and information visualization. Seiji Yamada, Dr. Eng.: He received the B.S., M.S. and Ph.S. degrees in control engineering and artificial intelligence from Osaka University, Osaka, Japan, in 1984, 1986 and 1989, respectively. From 1989 to 1991, he served as a Research Associate in the Department of Control Engineering at Osaka University. From 1991 to 1996, he served as a Lecturer in the Institute of Scientific and Industrial Research at Osaka University. In 1996, he joined the Department of Computational Intelligence and Systems Science at Tokyo Institute of Technology, Yokohama, Japan, as an Associate Professor. His research interests include artificial intelligence, planning, machine learning for a robotics, intelligent information retrieval in the WWW, human computer interaction, He is a member of AAAI, IEEE, JSAI, RSJ and IEICE. Hiroyuki Kawano, Dr.Eng.: He is an Associate Professor at the Department of Systems Science, Graduate School of Informatics, Kyoto University, Japan. He obtained his B.Eng. and M.Eng. degrees in Applied Mathematics and Physics, and his Dr.Eng. degree in Applied Systems Science from Kyoto University. His research interests are in advanced database technologies, such as data mining, data warehousing, knowledge discovery and web search engine (Mondou). He has served on the program committees of several conferences in the areas of Data Base Systems, and technical committes of advanced information systems.     

Closed loop identification and control loop reconfiguration: an industrial case study

The results of a joint university–industry collaborative project for control loop reconfiguration using closed loop experimental data from a fuel gas pressure control system are described in this paper. The fuel gas pressure was being regulated using a butane stream. For economic reasons, it was necessary to switch control to the ethane stream. Previous attempts at effecting this changeover had proved unsuccessful. In this study, a powerful system identification technique namely Canonical Variate Analysis (CVA) was employed to obtain the empirical plant models. A PI controller was then designed using the direct synthesis method. Acceptable closed loop behavior was obtained with little online tuning.     

基于Web的企业工作流程管理控制系统

提出了一种采用以Web为核心环境Internet技术来实现企业工作流程管理控制系统。基于Web的企业工作流程管理控制系统不仅突破传统工作流系统在时间和空间上的局限,而且还通过软件构件的包装处理控制方式解决了开放式网络环境下的协作自动化管理控制问题。     

基于多Agent计算机仿真实验平台Swarm的综述*

结合具体实例“热虫实验”,解释了Swarm在人工世界环境下进行计算机仿真模拟的基本思想,探讨了Swarm的主要概念和系统结构;进而以Java语言为例介绍了面向对象思想用于Swarm编程的基本情况,并对Swarm所提供的软件工具包给出了Java形式的详细说明。     

Fuzzy User Modeling for Information Retrieval on the World Wide Web

Information retrieval from the World Wide Web through the use of search engines is known to be unable to capture effectively the information needs of users. The approach taken in this paper is to add intelligence to information retrieval from the World Wide Web, by the modeling of users to improve the interaction between the user and information retrieval systems. In other words, to improve the performance of the user in retrieving information from the information source. To effect such an improvement, it is necessary that any retrieval system should somehow make inferences concerning the information the user might want. The system then can aid the user, for instance by giving suggestions or by adapting any query based on predictions furnished by the model. So, by a combination of user modeling and fuzzy logic a prototype system has been developed (the Fuzzy Modeling Query Assistant (FMQA)) which modifies a user's query based on a fuzzy user model. The FMQA was tested via a user study which clearly indicated that, for the limited domain chosen, the modified queries are better than those that are left unmodified. Received 10 November 1998 / Revised 14 June 2000 / Accepted in revised form 25 September 2000     

WWW上路径模式发掘的研究

本文从互连网发展的趋势入手,对路径模式发掘进行了研究。先简要介绍数据库发掘的概况及网上数据发掘的特点,后结合关联法和组合概率法,并以算法和实例详细对之进行分析。