Seung Wok Han

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Ubiquitous computing environment involves a variety of devices of different capabilities. Here middleware takes a crucial role for efficiently coordinating the components and providing proper services. In this paper we propose a new middleware architecture called HOMEROS, which allows high flexibility by adopting a hybrid-network model and dynamically(More)
The context-aware services require to efficiently perceive not only the user requirements but also the context of the environment to provide customized services to the user. To efficiently develop the context-aware applications a systematic methodology correctly specifying the relation among dynamically changing contexts is essential. Here the context model(More)
Context-awareness is one of the key features of ubiquitous paradigm. To intelligently and sensitively deal with dynamic environment, a methodology specifying the relationships between the contexts and services needs to be developed. It is difficult to verify the correctness of the existing models on context with respect to timeliness. In this paper we(More)