A Web-Based CAL System Constructing Tool Using Case-BasedReasoning Approach

It seems that a big problem in applying the WWW to education fields is that teachershave difficulty directly developing and managing a web-based intelligent CAL (Computer AidedLearning) system, because of the shortage of funds and teachers who are skilled in both AI (ArtificialIntelligence) and computer information technologies. Focusing on solving the problems we havedeveloped a general-purpose tool called WWW-CALIST (WWW-based Computer Aided LearningIndividual-adaptive System Tool), which helps teachers build up a web-based individualized adaptivecomputer aided learning environment called 'test→search for information using an adaptivekowledge map→adaptive learning'. By using easy-to-use interfaces equipped with the tool, ateacher who knows only the HTML can develop and manage web-based individualized adaptive CAIsystems for various education domains.

THE TRACE IDENTITY, A POWERFUL TOOL FOR CONSTRUCTING THE HAMILTONIAN STRUCTURE OF INTEGRABLE SYSTEMS (Ⅱ)

An isospectral problem with four potentials is discussed. The corresponding hierarchy of nonlinearevolution equations is derived. It is shown that the AKNS, Levi, D-AKNS hierarchies and a new oneare reductions of the above hierarchy. In each case the relevant Hamiltonian form is established bymaking use of the trase identity.

对峙背后的联姻——论结构主义与后结构主义教育思想

结构主义和后结构主义是西方20世纪50年代以来相继出现的重要学术思潮,对教育思想的研究产生了很大影响,尤其是后结构主义教育思想,为当代教育改革提供了有效的理论依据。后结构主义从结构主义发展而来,它们表面上看似对峙,但实质上存在着紧密的联系。在结构主义教育思想里面,解构的萌芽已经出现;在后结构主义思想里面,结构主义的影子还没有消除。正像一块硬币的正反两面,结构主义与后结构主义难舍难分,共同为教育思想的研究提供了某种行之有效的工具和手段。