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M. Baldauf, S. Dustdar:
"A Survey on Context-aware systems";
Report No. TUV-1841-2004-24, 2004; 23 pages.

Context-aware systems offer entirely new opportunities for application developers
and for end users by gathering context data and adapting systems´
behavior accordingly. Especially in combination with mobile devices
such mechanisms are of great value and claim to increase usability tremendously.
In this paper, we present a layered architectural framework for
context-aware systems. Based on our suggested framework for analysis,
we introduce various existing context-aware systems focusing on contextaware
middleware and frameworks, which ease the development of contextaware
applications. We discuss various approaches and analyze important
aspects in context-aware computing on the basis of the presented systems.

Context-awareness, Layer architecture, Context framework, Context middleware