Matsuo, K.; Barolli, L.; Xhafa, F.; Koyama, A.; Durresi, A. International journal of web information systems Vol. 4, num. 3, p. 352-371 DOI: 10.1108/17440080810901115 Data de publicació: 2008 Article en revista
Purpose: – This work is motivated by the need to develop decentralized peer-to-peer (P2P) approaches to support e-learning and teaching activity in virtual universities. This paper aims to present the implementation of the JXTA-based e-learning P2P system.
Design/methodology/approach: – The design and implementation of a smart box environment that will be used for stimulating the learners to increase the learning efficiency is shown. The smart box is integrated with the JXTA-overlay by using efficient message sending between peers in the system.
Findings: – The proposed e-learning P2P system is a useful tool for monitoring and controlling learners' activity.
Research limitations/implications: – In the future, other effective stimulation for each learner using IC tag card will be added. Also, the Servo Motor has 12 control ports, so these will be used for implementing other stimulating functions. It is planned to extend the system with functionalities for presence mechanism of students in classrooms and activities.
Practical implications: – The proposed system is evaluated by experimental results and it has a good performance.
Originality/value: – This paper proposes and implements a novel e-learning system, which is based on P2P, web and sensor technologies.
Xhafa, F.; Barolli, L.; Fernandez, R.; Daradoumis, A.; Caballé , Santi International journal of web information systems Vol. 4, num. 1, p. 121-135 DOI: 10.1108/17440080810865657 Data de publicació: 2008 Article en revista
Purpose: In any distributed application, the communication between the distributed processes/nodes of the distributed systems is essential for both reliability and efficiency matters. The purpose of this paper is to address this issue for distributed applications based on JXTA protocols aiming at extending and evaluating the protocols of the JXTA library for reliable P2P computing. Design/methodology/approach.
After a careful examination of the current version of JXTA protocols, the need was observed for improving the original JXTA protocols such as pipe services to ensure reliable communication between nodes of the grid platform and the discovery and presence service to increase the performance of the applications. Using a mixed P2P network based on broker peers and client peers architecture, which served as a basis to extend the JXTA protocols, was the basis of the approach. Findings.
The original JXTA protocols are extented/re-implemented to support the development of reliable P2P distributed applications. Practical implications: The proposed approach has been validated in practice by deploying a P2P network using nodes of PlanetLab platform and testing each of the re-implemented protocols using this real P2P network. The extended JXTA protocols can be used to develop reliable P2P distributed applications. Originality/value: Is of value by showing how to improve both efficiency reliability of JXTA protocols and services
Barolli, L.; Xhafa, F.; Durresi, A.; De Marco, G. International journal of web information systems Vol. 2, num. 3/4, p. 187-196 DOI: 10.1108/17440080780000299 Data de publicació: 2007-03 Article en revista
Peer-to-Peer computing offers many attractive features, such as collaboration, self-organization, load balancing, availability, fault tolerance and anonymity. However, it also faces many serious challenges. In our previous work, we implemented a synchronous P2P collaboration platform called TOMSCOP. However, the TOMSCOP was implemented only in Windows XPOS. In this work, we extend our previous work and present a multi-platform Peer-to-Peer system. The proposed system operates very smoothly in UNIX Solaris 9 OS, Linux Suse 9.1 OS, Mac OSX, and Windows XP. In this paper, we present the design of proposed system and four web application tools: info, joint draw pad, shared web browser and subaru avatar.