Currently, Web-based educational systems form one of the fastest growing areas in educational technology research and development. Benefits of Web-based education are independence of teaching and learning with respect to time and space. Courseware installed and maintained in one place may be used by a huge number of users all over the world. A challenging research goal is the development of adaptive and intelligent Web-based educational systems (W-AIES) that offer some amount of adaptivity and intelligence.

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Adaptive and Intelligent Web-based Educational Systems

This paper provides a short review and a state of the art report on Webbased adaptive educational systems. The systems are analyzed according to applied adaptation technologies.

Adaptive Educational Systems on the World-Wide-Web: A Review of Available Technologies

Software-Defined Networking

Software defined networks

Hypertext transfer protocol

An User Authentication Gateway System with Simple User Interface, Low Administration Cost and Wide Applicability

An Implementation of an Intelligent Tutoring System (ITS) on the World-Wide Web (WWW) : Individualized Tutoring Mechanism in the WWW Framework

In Japan, many research networks are implemented with Internet Protocol Version 4 (IPv4) and Internet Protocol Version 6 (IPv6) dual stacks, and some ISPs are beginning to provide IPv6 services. Popular operating systems such as Windows XP, Mac OS X and Linux also support IPv6. Therefore, the user will use IPv6 transparently in the near future. From this background, it is important to implement a network user authentication system that can control both communications of IPv4 and IPv6, simultaneously. At Saga University we have been developing and using a network user authentication system called "Opengate" This system has functions for user authentication and access control according to the authentication and logging of their usage. The Opengate has a simple user interface via a Web browser. The system authenticates users by authentication mechanism such as POP3, POP3S, FTP, RADIUS, and PAM. After authentication, the system allows the user access to the network and places a Java Applet into the user's Web browser. The applet establishes a TCP connection to the Opengate server. When the connection closes, the server detects the end of network usage and closes the network.We implement functions for IPv6 into the Opengate without changing characteristic features of the system. This paper describes the implementation of the Opengate and its IPv6 extension.

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Implementation of IPv6 functions for a network user authentication system opengate

Open gate is an access control system of the captive portal type for mobile LAN users. Open gate has benefits such as simple user interface, easy administration and so on. It supports IPv6 and Shibboleth single-sign-on authentication. We have been operating Open gate over 10 years without serious problems. Open gate is running on virtual machine environments. Virtual machine environments enable Open gate to be a cloud system for user authentication. The cloud Open gate provides opportunities for small organizations to have their own access control systems without self-operations.

Opengate on Cloud

In this paper, we integrate an Intelligent Tutoring System (ITS) with World Wide Web (WWW) technology, investigate the benefits and limits of the WWW-based ITS, and study technical problems in system development and their solutions.

Kenzi Watanabe

Papers

An User Authentication Gateway System with Simple User Interface, Low Administration Cost and Wide Applicability

An Implementation of an Intelligent Tutoring System (ITS) on the World-Wide Web (WWW) : Individualized Tutoring Mechanism in the WWW Framework

Implementation of IPv6 functions for a network user authentication system opengate

Opengate on Cloud

An ITS (Intelligent Tutoring System) on the WWW (World Wide Web)