基于云计算的数字档案馆建设研究

本文在阐明云计算概念和关于云计算近期研究的基础上,论述了云计算在数字档案馆中的应用优势,提出了基于云计算的高校数字档案馆建设模型。针对云计算技术应用过程中出现的问题,提出了解决问题的对策。     

Two-stage statistical language models for text database selection

As the number and diversity of distributed Web databases on the Internet exponentially increase, it is difficult for user to know which databases are appropriate to search. Given database language models that describe the content of each database, database selection services can provide assistance in locating databases relevant to the information needs of users. In this paper, we propose a database selection approach based on statistical language modeling. The basic idea behind the approach is that, for databases that are categorized into a topic hierarchy, individual language models are estimated at different search stages, and then the databases are ranked by the similarity to the query according to the estimated language model. Two-stage smoothed language models are presented to circumvent inaccuracy due to word sparseness. Experimental results demonstrate that such a language modeling approach is competitive with current state-of-the-art database selection approaches.     

工业多媒体及分布式超媒体数据库

多媒体技术正逐步形成一个新的分支──工业多媒体技术,它是自动控制技术、现代控制理论、信息工程、电子技术、传感器技术和计算机多媒体技术的多学科交叉,在应用中,它需建立分布式超媒体数据库。本文主要探讨多媒体技术的多学科交叉,在应用中,它需建立分布式超媒体数据库。本文主要探讨多媒体技术自动化和测控中应用的学科交叉及分布超媒体数据库。     

基于云计算技术的数字生态城市平台设计

针对国内外数字城市建设计中存在的一些不足,本文提出了数字生态城市云平台的解决方案。该平台是数字生态城市DigitalCity和云计算服务平台的融合,解决同时操作多源、海量和异构的城市基础数据,实现分布式信息资源的共享与交换,提供分布式的按需服务等功能。DCPaaS数字生态平台针对数字生态城市的大环境,实现了业务自动部署和托管运行、专业化集中式维护等功能,为创建良好的数字生态城市服务创新环境提供了必需的技术支撑。     

基于Agent代理分布式协同设计系统研究

随着信息技术、网络技术的发展,人们对产品设计过程中的信息交流和知识共享提出了更高的要求,协同设计技术可以有效地提高设计人员之间的信息共享和资源共享。基于Agent代理,本文提出了将Web技术和Multi-Agent技术融合的分布式协同设计系统。在分析系统体系结构的基础上,着重阐述了Multi-Agent代理模型和工作原理,并将其应用于仪表产品造型设计系统中。     

Critical factors influencing secondary school pupil’s decisions to study computing in tertiary education: Gender differences

This paper aims to determine the factors affecting the decisions of both male and female secondary school pupils whether or not to pursue undergraduate studies in Computing. It is based on research conducted in Greece, on a sample of 248 pupils, 135 of whom were female. All were aged 17 and about to decide on their future undergraduate studies. Questionnaires were used, addressing issues in the following four main categories: a) the reasons pupils chose/rejected Computing, b) how family and friends, the media and the school environment contribute to their decision, c) how pupils perceived their future after studying Computing and d) how pupils perceived the profile of a computer professional in terms of gender.

基于分布式体系的J2EE及应用

该文以分布式体系结构为核心,介绍其基本原理,着重介绍J2EE架构及相关技术.并描述一个基于J2EE应用系统的模型.对该模型的设计模式和其中业务逻辑的封装和实现进行详细论述.