Study And Design Of A Web-based Learning System

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.