A Digital Licensing Model for the Exchange of Learning Objects in a Federated Environment
WEC '04 Proceedings of the First IEEE International Workshop on Electronic Contracting
Interoperability between Different Rights Expression Languages and Protection Mechanisms
AXMEDIS '05 Proceedings of the First International Conference on Automated Production of Cross Media Content for Multi-Channel Distribution
LIMBS: Open Source, Open Standards, and Open Content To Foster Learning Resource Exchanges
ICALT '06 Proceedings of the Sixth IEEE International Conference on Advanced Learning Technologies
Towards a pan-European learning resource exchange infrastructure
NGITS'09 Proceedings of the 7th international conference on Next generation information technologies and systems
Learning resources in federated environments: a broken link checker based on URL similarity
International Journal of Metadata, Semantics and Ontologies
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In a large federation of commercial learning object repositories, customers might be confronted to different access control procedures put in place by different content providers to enforce their respective distribution models. This paper proposes a federated authorization service that provides a uniform access to learning objects protected by different authorization protocols. This service is based on a learning object broker that mediates different distribution models.