• 한국정밀공학회지
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• 제16권5호통권98호
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• pp.124-131
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• 1999

DVD(Digital Versatile Disk) is the data storage media devised to make high storage density and high speed data input/output possible. For example, a whole length movie can be stored in a disk as large as a CD(Compact Disk). Therefore higher rotational speed and better accuracy in optical pick-up are required compared with the existing optical storage device. Without these operational functional requirements being satisfied DVD will lose its place as the high capacity storage device. This paper evaluated whether the currently developed DVD satisfies the requirements and provides improved methods with the Axiomatic Approach which is superb in evaluating and designing newly concepted designs.

• 한국항공운항학회지
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• 제17권3호
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• pp.40-50
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• 2009

Avionics system's function for an air transport mission is analysed. The starting point for designing a Avionics system is a clear understanding of the mission requirements and the requirement allocation by the top level aircraft system. Therefore, the analysis begins by making a top-down analysis to the aircraft missions. The baseline mission is divided into segments, and each segment is subjected to a detailed analysis to establish the requirements for the Avionics system. Special attention is given to capture the key aspects of interfaces, and to incorporate them into the design.

• 한국경영과학회지
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• 제28권2호
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• pp.91-103
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• 2003

Use case modeling on UML (Unified Modeling Language) is getting widely used in OOAD and CBD and it is considered a useful technique in dealing with the complexity of the requirements analysis. However, some of the problems with use case modeling are that it is not structured, difficult to handle non-functional requirements, and to analyze impacts among use cases. To alleviate these problems, we propose a scenario-based goal-oriented approach for use case modeling. The proposed approach is to apply a goal-oriented analysis method to use case modeling. Since goal-oriented analysis method is not systematic and many heuristics are involved, we have adopted scenarios as the basis for goal extraction. The proposed method is applied to CBIS (City Bus Information Subsystem) in ITS (Intelligent Transportation System) domain. The proposed approach helps software engineers to analyze the impact among use cases and represent non-functional requirements.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 심포지엄 논문집 정보 및 제어부문
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• pp.80-82
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• 2004

Personal robot consist of various modules that have independent functions. Because personal robot has requirement that support various construction for user's tendency. Therefore, Middleware mechanism at support not only personal robot's main functional element but also embedded modules functional elements is required. Each module have various heterogeneous network interfaces and variable services and variables. Therefore, Middleware must support these various network interfaces. This paper, pointed in Controller Area Network(CAN) inreface that usually used in embedded system for control. For connect various heterogeneous network interfaces (Ethernet, RS232 etc..), it is necessary to modify bagic CAN frame format. And also make some kind of BUS topology for CAN network.

• Nuclear Engineering and Technology
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• 제51권5호
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• pp.1289-1296
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• 2019

Non-functional requirements plays a critical role in designing variety of applications domain ranges from safety-critical systems to simple gaming applications. Performance is one of the crucial non-functional requirement, especially in control and safety systems, that validates the design. System risk can be quantified as a product of probability of system failure and severity of its impact. In this paper, we devise a technique to do the performance analysis of safety critical and control systems and to estimate performance based risk factor. The technique elaborates Petri nets to estimate performability to ensure system dependability requirements. We illustrate the technique on a case study of Nuclear Power Plant system. The technique has been validated on 17 safety critical and control systems of Nuclear Power Plant.

• International journal of advanced smart convergence
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• 제9권4호
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• pp.124-131
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• 2020

As users of internet-based software applications increase, functional and non-functional problems for software applications are quickly exposed to user reviews. These user reviews are an important source of information for software improvement. User review mining has become an important topic of intelligent software engineering. This study proposes a user review mining method for software improvement. User review data collected by crawling on the app review page is analyzed to check user satisfaction. It analyzes the sentiment of positive and negative that users feel with a machine learning method. And it analyzes user requirement issues through topic analysis based on structural topic modeling. The user review mining process proposed in this study conducted a case study with the a non-face-to-face video conferencing app. Software improvement through user review mining contributes to the user lock-in effect and extending the life cycle of the software. The results of this study will contribute to providing insight on improvement not only for developers, but also for service operators and marketing.

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.311.1-311.1
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• 2002

Crystal structure of TRAF6 in complex with TRAF6-binding sites from CD40 was previously determined. The structure revealed a distinct TRAF6-binding groove of CD40. the key structural determinant of interaction. The structural information leads to a proposed TRAF6-binding motif. This allows the identification of TRAF6-binding sequences in the hlRAK protein, whose functional requirement in IL-1 mediated signal transduction is further demonstrated using site-directed mutagenesis. The mutational in IL-1 mediated signal transduction is further dimonstrated using site-directed mutagenesis. The mutational effects of hlRAK on the down-stream NF-${\kappa}$ signaling shows the importance of the TRAF6 interface for signaling by IL-1.

• 한국항행학회논문지
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• 제20권2호
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• pp.148-154
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• 2016

안전과 관련된 CNS/ATM 시스템의 개발은 안전 평가 활동을 필요로 한다. 안전 평가에는 기능 위험 평가를 포함하며, 이는 시스템의 위험한 상황을 감소시키기 위한 시스템 안전 요구사항을 도출하는데 영향을 끼친다. 본 논문은 A-SMGCS에 대한 기능 위험 평가에 대한 사례 연구를 수행하였다. 이를 위해 관련연구인 Eurocontrol과 EMMA에서 수행한 연구를 분석하였으며 Eurocontrol 및 EMMA의 기능 위험 평가 체계를 통합하였다. FHA(functional hazard assessment) 범위뿐만 아니라 FHA를 위한 여러 가정 사항들을 인천국제공항에 대해서 정의하였다. 29개의 위험원이 식별되었고, 각각에 대해 심각도가 평가되었다. 그리고 위험원에 대한 노출빈도와 안전 목적이 이벤트 트리 분석 방법을 사용하여 분석되었다. 본 연구 결과와 EMMA의 결과에 대한 차이를 분석하였으며 또한 본 연구에서의 평가 결과에 대해서도 검토 하였다.

• 한국해양환경ㆍ에너지학회지
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• 제5권2호
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• pp.41-49
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• 2002

본 논문은 해양 폐기물 수거선박과 선단구성의 초기개념개발에 대하여 논한다. 운용요구조건을 도출하기 위해 해역의 운용환경, 유사선, 관련법규 및 규정을 조사하고 임무분석을 통해 선박과 선단의 사양요구조건(TLR)을 작성하였다. 국내연안의 침적 폐기물 추정량을 토대로 수거에 필요한 선박규모의 여러 대안을 도출하고 경제성, 효율성을 검토하였으며 국내연안에 적합한 수거선박과 선단을 구성하였다.

• 한국정보처리학회논문지
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• 제5권10호
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• pp.2546-2555
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• 1998

기존의 절차중심 패러다임으로 개발된 시스템들은 사용자들의 새로운 요구와 변화 그리고 개발 당시의 기술보다 뛰어난 새로운 기술이 개발됨에 따라 수정되어야할 필요가 있다. 특히 재공학 및 역공학 기술로부터 품질이 높은 기존 시스템이 객체지향 시스템으로 변환되었을 때 변화된 시스템의 기능이 변환이전의 시스템과 동일한지 여부의 평가가 필요하다. 본 논문에서는 함수 커버리지를 제안하여 절차 중심의 소프트웨어와 변화된 객체지향 소프트웨어간의 기능적 일치성을 검증하기 위한 방법과 도구를 개발하였다. 이때 동적 분석에 필요한 계측도구의 삽입과정과 검증절차를 통하여 함수 커버리지의 만족 여부를 판단하여 테스트 데이터를 선정하였다.