Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31103
On the Continuous Service of Distributed e-Learning System

Authors: Kazunari Meguro, Shinichi Motomura, Takao Kawamura, Kazunori Sugahara


In this paper, backup and recovery technique for Peer to Peer applications, such as a distributed asynchronous Web-Based Training system that we have previously proposed. In order to improve the scalability and robustness of this system, all contents and function are realized on mobile agents. These agents are distributed to computers, and they can obtain using a Peer to Peer network that modified Content-Addressable Network. In the proposed system, although entire services do not become impossible even if some computers break down, the problem that contents disappear occurs with an agent-s disappearance. As a solution for this issue, backups of agents are distributed to computers. If a failure of a computer is detected, other computers will continue service using backups of the agents belonged to the computer.

Keywords: e-Learning, p2p, Distributed Multimedia Systems, Mobile Agent

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1289


[1] Nishita, T. and et el,: Development of a Web Based Training system and Courseware for Advanced Computer Graphics Courses Enhanced by Interactive Java Applets, Proceedings of International Conference on Geometry and Graphics, Vol. 2, pp. 123-128 (2002).
[2] Homma, H. and Aoki, Y.: Creation of WBT Server on Digital Signal Processing, Proceedings of 4th International Conference on Information Technology Based Higher Education and Training, (2003). Marrakech, Morocco.
[3] Helic, D., Krottmaier, H., Maurer, H. and Scerbakov, N.: Enabling Project-Based Learning in WBT Systems, International Journal on ELearning, Vol. 4, No. 4, pp. 445-461 (2005). Norfolk, VA.
[4] Kawamura, T. and Sugahara, K.: A Mobile Agent-Based P2P e-Learning System, IPSJ Journal, Vol. 46, No. 1, pp. 222-225 (2005).
[5] Motomura, S., Nakatani, R., Kawamura, T. and Sugahara, K.: Distributed e-Learning System Using P2P Technology, Proceedings of the 2nd International Conference on Web Information Systems and Technologies, pp.250-255 (2006). Setubal, Portugal.
[6] Napster, (1999).
[7] Gnutella, (2000).
[8] Clarke, I., Sandberg, O,. Wiley, B. and Hong, T. W.: Freenet: A Distributed Anonymous Information Storage and Retrieval System, (2000).
[9] Ratnasamy, S., Francis, P., Handley, M., Karp, R. and Schenker, S.: A scalable content-addressable network, Proceedings of the 2001 conference on applications, technologies, architectures, and protocols for computer communications, ACM Press, pp. 161-172 (2001).
[10] Motomura, S., Kawamura, T. and Sugahara, K.: Logic-Based Mobile Agent Framework with a Concept of Field , IPSJ Journal, Vol. 47, No. 4, pp. 1230-1238 (2006).