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We develop a novel approach to store and query realtime (contextual) information from/to a population of wireless/wired devices generating a stream of spatio-temporal events corresponding to sensors/applications and/or humans. The approach is based on a novel peer-to-peer overlay network architecture which exploits the spatial relevance of events and the locality of queries to store and query events...
Modern environments have huge quantities of contextual information that is mainly relevant/useful when a user/mobile is situated at particular locations. This paper investigates organizations for exchanging localized context and surveilling the corresponding areas that minimize bandwidth/energy requirements. We propose a simple model where context is associated with spatial regions, cells, and is...
Ubiquitous computing promises to both assist us in everyday tasks and enhance our capabilities. Key elements towards fulfilling this goal are exploiting the physical and logical context in which computation occurs, in order to scope the interaction between users and applications. In this paper we describe an RFID-based platform allowing mobile entities to transparently associate with ubiquitous applications...
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