【作者】 许又泉；

【导师】 李仁发； 梁冰；

【作者基本信息】 湖南大学 ， 计算机技术， 2006， 硕士

【摘要】 随着Internet的快速发展,网络技术及多媒体技术对教育领域的改革产生了重大的影响,网上教育已经成为培养人才、促进科研和教育事业发展的重要途径,网上学习作为新的教学模式正在建设和发展着。网上数字化实验室的出现,使网络学习更趋完善,它的建立大大提高了实验教学的伸缩性和适应性。在数字化实验室中,可以通过软件模拟技术,达到真实实验的效果,更可以透过网络技术,使得实验可以不受时间和空间的限制。个性化服务是互联网发展的潮流,随着远程教育与互联网的日益紧密结合,特别是与web的结合,个性化的学习服务已经受到人们的青睐。如何向学习者呈现个性化的学习材料,及时、准确地解决学习者在学习中碰到的各种难题,完成网上的数字化实验以及做好学习的评价和督促等是构造一个良好的网络学习系统的关键技术。本文围绕上述问题开展工作,重点研究了网络学习的个性化问题和网上的数字化实验。论文首先阐明了研究的背景、意义和研究的主要内容。然后分析了网络学习的内涵、特点和基本类型;介绍了数字化实验、个性化服务的基本概念及其研究现状。最后就网络学习系统功能设计、系统框架设计以及四大功能模块的设计进行了具体研究。数字化实验的研究中,在分析Matlab中Web应用的工作原理的基础上,将Java Applet技术与Matlab/Simulink相结合,提出了一种基于Web数字化实验方法,并用其实现了数字电路的数字化实验。为了更好地为用户提供个性化的学习服务,更准确地描述用户的兴趣,提高学习效率,提出了一个基于学科知识点有向图的用户兴趣模型;详细介绍了用户模型的建立、优化和网页相关度的计算。在远程答疑模块的设计中,讨论了实时、非实时答疑及其策略。更多还原

【Abstract】 With the development of Internet,the network technology and the multimedia technology have a tremendous bearing on education reform.E-teaching has become one of the most important ways of education and researching.E-learning as a new education model is constructing and developing.E-lab is necessary for distance education,it expands range and application in experiment education.Software technologies can be used to simulate real experiments in a virtual laboratory.We can also conduct the experiment at any time and any place through the Internet.Personalization is the development trend of Internet.With the ever-increasing combination between distance education and Internet,there is a clear demand for personalized services.The key problems of researching and implementing a web-based learning system are based on providing learners with personalize and customized content through Web page,giving correct answers as soon as possible,conducting experiments,applying the learning assessment.This thesis is mainly concerned with the personalized information services in web-based learning and virtual lab.First,this thesis illustrates the background,significance and main content of the research.Second,it analyses the connotations,characteristics ,and basic patterns of the learning style under web-based learning environment.It introduces the concepts of e-lab and personalized services ,and it also talks about the present situations of their study home and abroad .Finally,it study the function ,framework and modules of a web-based learning system.In studying the virtual lab,analyzing the principle of Matlab Web,putting forward a novel method based on combing java applet technology with Matlab/Simulink for Web-based virtual experiment, and implementing a virtual experiment in digital circuit by this method.In order to provide users with personalized services better and describe the users’interests more accurately, designing a user model based on the directed knowledge points graph,describing the construction,optimization of the model and the relativity calculation of webpages in detail.In studying the design of question&answer system based www,analyzing real-time and non real-time answer patterns and giving management policy.更多还原