Quality of service requirements for the e-learning grid
2LeGE-WG'03 Proceedings of the 2nd international LeGE-WG conference on e-Learning and Grid Technologies: a fundamental challenge for Europe
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Abstract: Distributed Learning Environments (DLEs) are being cited as solutions to the ambitious political goals of better education, wider access and lower costs. This paper outlines the architecture of the TAGS framework for building DLEs. The main features that the architecture facilitates are strong support for group work, anytime/anywhere access, the input of real world data, event monitoring facilities, authentication, authorisation and protection, and the controlling of delay between users actions and system responses. These features have required the development of an expanded view of Quality of Service (QoS) parameters. The architecture has been refined over a number of years as the result of collaborative development between users and programmers. In particular, we have found that the bringing together of systems programmers, computer science researchers and subject-specific educationalists has allowed needs to be identified and addressed effectively. We believe that TAGS makes it possible for educationalists to easily build DLEs that meet their needs.