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This article deals with educational opportunities for mixed reality games and related scenarios for learning. It discusses several issues and educational challenges to be tackled when linking augmented reality and augmented virtuality. Second, the paper describes the architecture of the ARLearn system which offers highly flexible support for different(More)
The Broker's Lounge is a shell for knowledge structuring and dynamic user interface generation which supports the personalisation of both information structures and user interfaces, emphasising options for context change and multi-dimensional constraint propagation. Two major applications have been developed so far: ELFI, an advisor that manages knowledge(More)
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With Internet technology and other information systems that are available today users can often easily find the information needed. However, there are still several situations, in which users do not succeed to get the information required. In this paper we suggest context models to help users finding information in adequate quantity and quality. In general,(More)
User-driven annotation of learning content allows the user to interact with it in a flexible and an intuitive manner and hence personalize the content. This interaction, in most cases, follows the " paper and pen " note-taking paradigm. Though not without its advantages, this paradigm does not scale when the courses are delivered online as web pages. These(More)