• Journal of KIISE:Software and Applications
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• v.33 no.7
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• pp.605-614
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• 2006

The success of a software development project can be determined by the use of QCD. And as a software's size and complexity increase, the importance of early quality assurance rises. Therefore, more effort should be given to prevention, as opposed to correction. In order to provide a framework for the prevention of defects, defect detection activities such as peer review and testing, along with analysis of previous defects, is required. This entails a systematization and use of quality data from previous development efforts. FMEA, which is utilized for system safety assurance, can be applied as a means of software defect prevention. SW-FMEA (Software Failure Mode Effect Analysis) attempts to prevent defects by predicting likely defects. Presently, it has been applied to requirement analysis and design. SW-FMEA utilizes measured data from development activities, and can be used for defect prevention on both the development and management sides, for example, in planning, analysis, design, peer reviews, testing, risk management, and so forth. This research discusses about related methodology and proposes defect prevention model based on SW-FMEA. Proposed model is extended SW-FMEA that focuses on system analysis and design. The model not only supports verification and validation effectively, but is useful for reducing defect detection.

• Journal of the Korea Safety Management & Science
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• v.15 no.1
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• pp.11-19
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• 2013

In modern systems design and development, one of the key issues is considered to be related with how to reflect faithfully the stakeholder requirements including customer requirements therein, thereby successfully implementing the system functions derived from the requirements. On the other hand, the issue of safety management is also becoming greatly important these days, particularly in the operational phase of the systems under development. An approach to safety management can be based on the use of the failure mode effect and analysis (FMEA), which has been a core method adopted in automotive industry to reduce the potential failure. The fact that a successful development of cars needs to consider both the complexity and failure throughout the whole life cycle calls for the necessity of applying the systems engineering (SE) process. To meet such a need, in this paper a method of FMEA is developed based on the SE concept. To do so, a process model is derived first in order to identify the required activities that must be satisfied in automotive design while reducing the possibility of failure. Specifically, the stakeholder requirements were analyzed first to derive a set of functions, which subsequentially leads to the task of identifying necessary HW/SW components. Then the derived functions were allocated to appropriate HW/SW components. During this design process, the traceability between the functions and HW/SW components were generated. The traceability can play a key role when FMEA is performed to predict the potential failure that can be described with the routes from the components through the linked functions. As a case study, the developed process model has been applied in a project carried out in practice. The results turned out to demonstrate the usefulness of the approach.

• Information and Communications Magazine
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• v.25 no.6
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• pp.3-11
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• 2008

사용 편의나 안전 서비스를 위해 자동차에 내장되는 전자장치(ECU: Electronic Control Unit)는 증가하고 분산 네트워크 구조에서 운영되도록 네트워크 기반 응용 SW는 더욱 복잡해진다. 복잡해지고 분산화되는 ECU에 적용 가능한 응용서비스 개발을 위해 운영체제에서부터 플랫폼 및 응용 SW에 이르기까지 다양한 분야의 산업 표준화가 진행되고 있다. 운영체제 분야에서는 OSEK/VDX, SW 플랫폼 및 응용서비스 분야에서는 AUTOSAR, 응용서비스의 안전과 신뢰성 검증을 위하여 IEC-61508등에 근거하는 FTA(Fault Tree Analysis) 및 FMEA(Failure Mode and Effect Analysis) 등을 SW 분야에서도 반영하는 추세이다. 본 논문에서는 자동차 전자장치에 사용되는 IT기술의 접목 분야별 표준화 동향과 각 국가 및 지역별 추진방향을 살펴본다.