On the Continuous Service of Distributed e-Learning System
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.
[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, http://www.napster.com (1999).
[7] Gnutella, http://welcome.to/gnutella/ (2000).
[8] Clarke, I., Sandberg, O,. Wiley, B. and Hong, T. W.: Freenet: A
Distributed Anonymous Information Storage and Retrieval System,
http://freenetproject.org/papers/freenet.pdf (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).
[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, http://www.napster.com (1999).
[7] Gnutella, http://welcome.to/gnutella/ (2000).
[8] Clarke, I., Sandberg, O,. Wiley, B. and Hong, T. W.: Freenet: A
Distributed Anonymous Information Storage and Retrieval System,
http://freenetproject.org/papers/freenet.pdf (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).
@article{"International Journal of Information, Control and Computer Sciences:51066", author = "Kazunari Meguro and Shinichi Motomura and Takao Kawamura and Kazunori Sugahara", title = "On the Continuous Service of Distributed e-Learning System", abstract = "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 = "Distributed Multimedia Systems, e-Learning, P2P, Mobile
Agent", volume = "3", number = "7", pages = "1689-5", }