• 한국경영과학회지
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• 제22권4호
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• pp.81-92
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• 1997

The terminology such as ecology, environment problems, ecosystems, ecofactory, and others related to environmental problems have been recently used in manufacturing systems, since the modern industries have to consider a global ecological crisis. The indifference of recent environmental problems which may be faced now has been paid attention to all engineering areas. In this paper, manufacturing functional requirements such as disassembly, disposal, disposal, or recycling are considered in the integrated product design development, which have not been considered well in the preliminary design stage. Those functions will contribute to reduce the waste and to long the product life cycle, which also satisfies the business benefits and customer requirements. The concurrent design concepts should be applied to integrate all possible factors. Therefore, few practical concurrent engineering tools are presented in here. The objective of this paper is to develop a called green manufacturing systems for integrated product design development by concurrent design concept which can give the desirable result in product design.

• 시스템엔지니어링학술지
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• 제9권1호
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• pp.1-11
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• 2013

In this study, unattended Light Rail Transit System (K-AGT) is a general-purpose standards safety requirements of IEC 62267 based System Engineering Process (SEP) was used. Functional analysis and physical architecting for each requirements through the vehicle was classified into sub-systems, design was analyzed in terms of SE. The analysis of the proposed system engineering process, unattended train operation (UTO), driverless train operation(DTO) design of the safety measures to be used as the basis is studied.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 춘계학술대회 논문집
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• pp.1253-1258
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• 2004

The system safety must be ensured before customization. There was no specific requirement representing system safety in Korea until now. So we should draw safety requirements to guarantee system safety for the first time. In this paper, the Preliminary Hazard Analysis (PHA) to derive the safety requirements on the train control system was carried out. To analyze hazard, we have to deduce system functions, identify related hazards, derive the effects of the hazards, analyze current risks, define the target risks of the system, and deduce the alternative plans to reduce the effects of the hazards. For the case study, the detailed analysis on vehicle collision that was a main hazard of the train control system was carried out.

• 한국전자거래학회지
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• 제10권1호
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• pp.81-101
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• 2005

최근 들어 비즈니스 환경의 변화로 인하여 비즈니스 프로세스 관리(BPM)라고 하는 경영관리기법이 주목을 받게 되었다. 그러나 다양한 업무환경에 따른 적합한 BPM을 도입하는 것에 대한 적절한 지침이 제시되어 있지 않다. 본 연구는 BPM에 요구되는 기능적인 사항과 기술적인 사항들을 분류하고 정의하여 기능적 및 기술적 체계를 제시한다. 또한 이러한 체계를 기반으로 BPM 평가방안을 제시한다. 제시된 평가방안은 4가지 BPM의 유형별로 다른 중요도를 반영하여 BPM을 평가할 수 있도록 하였다. 본 연구는 BPM을 도입하고자 하는 기업의 주요한 지침으로 활용될 수 있을 것이다.

• 대한임베디드공학회논문지
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• 제2권4호
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• pp.242-250
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• 2007

Wireless sensor networks are subject to highly heterogeneous system requirements in terms of their functionality and performance due to their broad application areas. Though the heterogeneity hinders the opportunity of developing a single universal platform for sensor networks, efforts to provide uniform, inter-operable and scalable ones for sensor networks are still essential for the growth of the industry as well as their technological advance. As a part of our work to develop such a robust platform, this paper presents the software architecture for sensor nodes with focus on our sensor node operating system and its configuration methodology. Addressing principle issues in its design space which includes programming, execution, task scheduling and software layer models, our architecture is highly reconfigurable with respect to system resources and functional requirements and also highly efficient in supporting multi-threading under small system resources.

• 한국신뢰성학회:학술대회논문집
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• 한국신뢰성학회 2011년도 춘계학술발표대회 논문집
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• pp.271-279
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• 2011

Automotive safety integrity level of hardware components can be achieved by satisfying quantitative and qualitative requirements. Based on ASIL, quantitative requirements are composed of hardware architectural metrics and evaluation of safety goal violations due to random hardware failures in ISO 26262. In this paper, the types of hardware failures will be defined and classified. Based on various metrics related with hardware failures, design essentials to achieve hardware safety integrity will be studied specifically. Issues associated with hardware development and assessment process are presented briefly.

• 한국철도학회논문집
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• 제8권2호
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• pp.161-169
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• 2005

In this paper, we provide safety requirements and advices to guarantee the safety of an interface in a level crossing system which is an interface between the conventional facilities and the new ATP (Automatic Train Protection) system, as well as we accomplish a safety management for the facilities of a country that has a different standard with already standardized ATP system. The system model has been made based on a safety activity of the international standard, and then a tolerance of a risk by the safety activity through PHA (Preliminary Hazard Analysis) has been analyzed. finally we achieved HIA (Hazard Identification and Analysis) for the assumptions that have been produced from a operating scenario and a functional interface. Thus, the safety requirements for the interface has been provided from the safety plan of HIA, and we showed the safety activity to guarantee the system safety through HIA which was depend on the design.

• 한국항해항만학회지
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• 제26권1호
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• pp.35-42
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• 2002

항만 및 항로의 설계에 있어서 시뮬레이터 적용의 중요성과 그 기능이 강조되고 있다. 본 연구에서는 시뮬레이션의 다른 방법과 그 적용에 대하여 소개하였고, 대축척 시뮬레이션의 개념, 그룹시뮬레이션을 제안하였다. 이 과업을 적절하고 효과적으로 수행하기 위하여 시뮬레이터의 요구조건을 제시하였고, 특별히 항로설계 시뮬레션에서 가장 중요한 선박의 동하중 모델링에서의 몇가지 관점과 주위환경 요소를 설명하고 알고리즘을 나타내었다.

• 정보관리학회지
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• 제14권2호
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• pp.165-189
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• 1997

기존의 모델링 방법은 분석, 설계, 구현단계에서 시스템이 수행해야 할 기능적 및 비기능적 요구를 완전하고 일관성 있게 반영할 수 있는 설계절차와 명세서가 미흡하다. 이러한 문제점은 다양한 형태의 자료와 다양한 검색방법을 요구하고 있는 문헌정보 시스템에서는 문제가 있을것으로 본다. 따라서 본 논문에서는 OMT에서 제시되고 있는 방법을 부분적으로 개선하여 시스템개발에 적용할 수 있도록 OMT를 변형한 객체모델링을 도서관 이용자 시스템 요구사항을 대상으로 설계하였다.

• 한국전자거래학회지
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• 제7권2호
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• pp.143-156
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• 2002

The objective of supply chain planning is to satisfy the requirements for minimizing inventory costs, transportation costs, and lead times throughout the supply, production and distribution stage dispersed geographically. Therefore, the supply chain planning system should have functionalities to resolve complex optimization problems that have characteristics of multi-stage and multi-product. Ant the system should also support collaborative decision making among distributed business partners. In this study, we proposed a distributed architecture for the supply chain planning system. To do this, we analyzed functional requirements by using IDEF-0(ICAM Definition-0) methodology, defined required components, and designed each component by using object-oriented methodology. We implemented a prototype system based on CORBA (Common Object Request Broker Architecture) to show that the proposed distributed architecture based on component technology is feasible and can solve supply chain planning problem collaboratively.