• Proceedings of the Korea Information Processing Society Conference
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• 2003.11c
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• pp.1645-1648
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• 2003

최근 디지털 가전과 모바일 컴퓨팅이 화두로 떠오르면서 내장형(embedded) 기술이 전성기를 맞이하고 있다. 실시간 내장형 시스템을 컴포넌트 기반 소프트웨어 기술을 사용하여 구축한다면 재사용과 재구성이 용이해 저렴하고 신뢰성 있는 시스템 개발이 가능해진다. 이러한 이유로 인하여, 자원이 제한된 실시간 내장형 시스템 개발 사용에 적합한 컴포넌트 모델이 소개되고 있으며, 그 중 PBO 모델은 다른 모델에 비해 실시간 시스템에 적합한 인터페이스를 정의하고 있으나, 실시간 내장형 시스템 개발에 적용되는 범위를 넓히기 위해서는 구성과 분석 기능을 제공하는 툴셋을 필요로 하고 있다. 따라서, 본 논문에서는 구성과 분석 기능을 포함하는 PBO 모델에 기반한 개발 툴셋의 아키텍쳐를 제안하였으며, 이를 통해 설계 시간과 에러 감소, 생산성을 증가하는 방안을 제시하였다.

• Journal of Korea Multimedia Society
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• v.1 no.2
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• pp.239-248
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• 1998

Software reengineering is making various research for solutions against problem of maintain existing system. Reengineering has a meaning of development of softwares on existing systems through the reverse-engineering and the forward-engineering. It extracts classes from existing system's softwares to increase the comprehension of the system and enhance the maintenability of softwares. Most of the important concepts used in reengineering is composition that is restructuring of the existing objects from other components. The classes and clusters in storage have structural relationship with system's main components to reuse in the higher level. These are referenced as dynamic informations through structuring an architect for each of them. The classes are created by extractor, searcher and composer through representing existing object-oriented source code. Each of classes and clusters extract refined informations through optimization. New architecture is created from the cluster based on its classes' relationship in storage. This information can be used as an executable code later on. In this paper, we propose the tools, it presented by this thesis presents a new information to users through analysing, based on reengineering, Object-Oriented informations and practicing composition methodology. These composite classes will increase reusability and produce higher comprehension information to consist maintainability for existing codes.

• Journal of KIISE:Software and Applications
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• v.29 no.7
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• pp.465-475
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• 2002

An object-oriented framework supports efficient component-based software development by providing a flexible architecture that can be decomposed into easily modifiable and composable classes. Object-oriented frameworks require thorough testing as they are intended to be reused repeatedly In developing numerous applications. Furthermore, additional testing is needed each time the framework is modified and extended for reuse. To test a framework, it must be instantiated into a complete, executable system. It is, however, practically impossible to test a framework exhaustively against all kinds of framework instantiations, as possible systems into which a framework can be configured are infinitely diverse. If we can classify possible configurations of a framework into a finite number of groups so that all configurations of a group have the same structural or behavioral characteristics, we can effectively cover all significant test cases for the framework testing by choosing a representative configuration from each group. This paper proposes a systematic method of classifying object structures of a framework hotspot and extracting structural test patterns from them. This paper also presents how we can select an instance of object structure from each extracted test pattern for use in the frameworks hotspot testing. This method is useful for selection of optimal test cases and systematic construction of executable test target.