Dongwon Jeong

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This paper proposes a new persistent storage to efficiently manage OWL Web ontologies. The Semantic Web is recognized as a next direction for progress of the current Web. To realize the Semantic Web, various technologies have been developed. Especially, OWL (Web Ontology Language) is the most important and state-of-the-art technology toward the ideal(More)
In this paper, we propose a new relational schema (R-schema) to XML Schema translation algorithm that analyzes the cardinality between data values and patterns of user queries to resolve the implicit referential integrity issue. Many translation methods have been developed taking into account structural and/or semantic aspects. However, earlier methods have(More)
The mobile internet environment which is in the limelight as the important platform of the ubiquitous environment gets accomplished by the intimate relation with user. In order to realize the interaction between device and user, it is considered that resource of exterior/interior user information which can be collected by mobile device and the(More)
IEEE 802.16e Task Group has developed an IEEE 802.16 amendment supporting mobile terminals such as PDAs, phones, and lap-tops. The energy efficiency design is an important research issue for mobile terminals due to limited battery power of them. In this paper, we study the energy efficiency design of IEEE 802.16e. For the purpose of power efficient(More)