A system architecture for context-aware mobile computing
A system architecture for context-aware mobile computing
The stick-e note architecture: extending the interface beyond the user
Proceedings of the 2nd international conference on Intelligent user interfaces
Qualitative representation of positional information
Artificial Intelligence
The context toolkit: aiding the development of context-enabled applications
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MobiCom '99 Proceedings of the 5th annual ACM/IEEE international conference on Mobile computing and networking
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Communications of the ACM
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The anatomy of a context-aware application
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A Survey of Context-Aware Mobile Computing Research
A Survey of Context-Aware Mobile Computing Research
Providing architectural support for building context-aware applications
Providing architectural support for building context-aware applications
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ICCI '04 Proceedings of the Third IEEE International Conference on Cognitive Informatics
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ICAS '07 Proceedings of the Third International Conference on Autonomic and Autonomous Systems
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SC'04 Proceedings of the 4th international conference on Spatial Cognition: reasoning, Action, Interaction
Qualitative Spatial Representation and Reasoning: An Overview
Fundamenta Informaticae - Qualitative Spatial Reasoning
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Pervasive and Mobile Computing
Journal of Ambient Intelligence and Smart Environments
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With more and more everyday artifacts being equipped with networked embedded systems technology, their spatial situation or context-such as where they are located or whether two of them are near or far apart from each other-is becoming increasingly relevant. The emerging availability of sensor technologies for measuring properties of the physical space enables them to become aware of their spatial context and adapt to changes accordingly, which in turn contributes to the implementation of systems that operate autonomously in the background and interact with humans in a more unobtrusive way. In this article, we specifically address the use of spatial relations between technology-rich artifacts as well as their changes over time. A key aspect is the abstraction of spatial contexts in order to separate details which are not relevant for a certain application, and thereby save computational resources or provide spatial information in a way that is closer to human concepts of space. In this regard, our focus is on qualitatively represented spatial relations, which are used as the basic building blocks for the development of spatially aware applications. A novel software framework is presented for this purpose and evaluated with respect to its performance as well as its adequacy for building real-world applications.