• Proceedings of the Korean Information Science Society Conference
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• 2012.06d
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• pp.254-256
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• 2012

본 논문에서는 유비쿼터스 환경에서의 상황 인식 어플리케이션을 효과적으로 생성하는 도구를 소개한다. 개발된 생성도구는 일반적인 상황을 정의할 수 있는 상황 정보 스키마를 제공한다. 이를 이용하여 상황 변화에 따르는 복잡한 행위를 규칙으로 정의하고 추론 엔진을 이용하여 주어진 상황을 해결할 수 있다. 특히, 상황 인식 어플리케이션을 위한 소스코드를 자동으로 생성하여 제공하기 때문에 어플리케이션 개발과 배포에 용이하다.

• The KIPS Transactions:PartA
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• v.15A no.1
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• pp.35-44
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• 2008

It is important to manage access control for secure ubiquitous applications. In this paper, we present an access-control system for executing policy file which includes access control rules. We implemented Context-aware Access Control Manager(CACM) based on Java Context-Awareness Framework(JCAF) which provides infrastructure and API for creating context-aware applications. CACM controls accesses to method call based on the access control rules in the policy file. We also implemented a support tool to help programmers modify incorrect access control rules using static analysis information, and a simulator for simulating ubiquitous applications. We describe simulation results for several ubiquitous applications.

• The KIPS Transactions:PartA
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• v.14A no.6
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• pp.363-370
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• 2007

The ubiquitous computing environment could provide better service to users by adapting to changing contexts. In this paper, we developed a context adaptation system, which enables an ubiquitous program to adapt to different contexts, following its adaptation rules. Using this system, programmers can develop ubiquitous programs suitable for changing contexts, by describing the context adaptation policy. The context adaptation engine of this system fits the ubiquitous program to the current context based on the context adaptation rules. This system was implemented using JCAF, context-aware programing framework based on java. A simulator is also provided to simulate ubiquitous programs by changing contexts.