• 제목/요약/키워드: systems

검색결과 113,559건 처리시간 0.082초

차세대 고속전철 시스템 엔지니어링 체계 모델 개발 (Development for Systems Engineering Framework Model of Next Generation High Speed Railway Train)

  • 유일상;박영원
    • 한국철도학회논문집
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    • 제4권4호
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    • pp.147-154
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    • 2001
  • A high-speed rail system represents a typical example of large-scale multi-disciplinary systems, consisting of subsystems such as train, electrical hardware, electronics, control, information, communication, civil technology etc. The Systems Engineering, as a methodology for engineering and management of today's ever-growing complex system, must be applied to development of such systems. This paper presents systems engineering framework model to have to be applied to the systems engineering technology development task for the korean next-generation high-speed railway systems in progress and demonstrates data models and schema for computer-aided systems engineering software, RDD-100, for use in its development and management.

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분산형전원이 도입된 배전계통에서의 정전비용산출 알고리즘에 관한 연구 (Evaluation Algorithm of Interruption Cost in Distribution Systems Interconnected with Dispersed Storage and Generation Systems)

  • 노대석;최재석;차준민;김덕영
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2000년도 추계학술대회 논문집 학회본부 A
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    • pp.82-84
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    • 2000
  • This paper deals with a evaluation algorithm of interruption cost in distribution systems in the case where Dispersed Storage and Generation (DSG) systems are interconnected with the distribution systems. If DSG systems are operated as the function of the load levelling in distribution systems at the normal conditions and as the uninterruptible power supply in fault areas at the emergency conditions, the reliability improvement of the distribution systems can be expected. In other words, the benefit can be represented by the cost avoiding interruption according to the operation of DSG systems when a fault is occurred. Therefore, this paper presents the evaluation algorithm for interruption cost in order to evaluate the benefit for the uninterruptible power supply of DSG systems in a quantitative manner.

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최종사용자요구중심의 PC Internet Stock Photo 시스템 구현 (The PC Internet Stock Photo Systems Implementation of End User Computing)

  • 권영직;백영욱;이승아
    • 한국산업정보학회논문지
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    • 제5권1호
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    • pp.69-76
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    • 2000
  • 본 논문에서는 최종사용자 중심 전산의 영향요인에 관한 이론연구를 바탕으로 최종사용자가 원하는 사진을 쉽게 검색할 수 있고, 사진작가는 자신의 작품을 직접 데이터베이스에 저장할 수 있는 Stock Photo 시스템을 인터넷상에서 운용되도륵 구현하였다. 또한 이러한 Stock Photo 시스템은 객체지향적인 방식으로 개발되어 소프트웨어의 수정과 재사용이 용이하며 거래와 지불에 관한 부분을 추가하여 전자거래의 한 형태로도 이용할 수 있도록 설계였다.

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Crop-Animal Production Systems in Tropical Regions - Review -

  • Devendra, C.
    • Asian-Australasian Journal of Animal Sciences
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    • 제13권2호
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    • pp.265-276
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    • 2000
  • Crop-animal systems which form the backbone of agriculture in the tropics are discussed with reference to their characteristics, economic importance of animals, genesis and types of crop-animal systems, relevance and potential importance, and priorities for research and development. These production systems are found across all agroecological zones: rain-fed temperate and highland systems, semi-arid and arid tropics, and sub-humid and humid tropics: the last four are priority areas in Asia. The potential importance of these systems in Asia is reflected in their advantages, synergism and complimentarity, economic benefits and contribution to sustainability. Illustrative case studies are cited which are appropriate to the two broad types of mixed farming systems: systems combining animals and annual cropping, and systems combining animals with perennial cropping with reference to Indonesia, Philippines, Malaysia, Sri Lanka, China and Nigeria. Priorities for research and development should address more complete use of the animal genetic resources, intensive utilisation of the feed resources, development-oriented utilisation of research results, minimizing animal diseases, and implementation of appropriate institutional and policy issues.

해양시스템에서의 시스템엔지니어링 기법 적용 (Applying Systems Engineering Processes to Development of Marine Systems)

  • 이종갑
    • 한국해양공학회:학술대회논문집
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    • 한국해양공학회 2006년 창립20주년기념 정기학술대회 및 국제워크샵
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    • pp.303-306
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    • 2006
  • Systems engineering is an interdisciplinary approach encompassing the entire technical effort to evolve and verify an integrated and total Life cycle balanced set of system, people, and process solutions that satisfy customer needs. Systems engineering is the integrating mechanism across the technical efforts related to the development, manufacturing, verification, deployment, operations, support, disposal at and user training for systems and their life cycle processes (EIA/IS 632). This paper introduces the principles and processes of systems engineering, based on EIA/IS 632, as a methodology for the development of large-complex marine systems.

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개발 성공요인을 적용한 네트워크 보안 시스템 개선에 관한 연구 (A Study on the Improvement of Network Security Systems Based on Critical Success Factors for Systems Development)

  • 김종선;황경태
    • Journal of Information Technology Applications and Management
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    • 제14권4호
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    • pp.121-138
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    • 2007
  • This study proposes a method to improve network security systems based on critical success factors for systems development. To accomplish the research objective, the study analyzes required functions of network security systems and reviews existing methods to improve network security systems. Based on the analyses and literature review, critical success factors for development of network security systems are identified and a new method to improve network security systems based on the critical success factors is proposed. The proposed method to improve network security systems is based on utilizing multi-core processors. A prototype is developed and validated. This study will provide a good case in the network security area where research incorporating both engineering and management disciplines lacks.

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SE프로세스를 통한 객체지향 실시간시스템 개발 방법론의 개선에 관한 연구 (On Improving the Object-Oriented Method for Real-Time System by Applying the SE Process)

  • 이병길;이재천
    • 시스템엔지니어링학술지
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    • 제2권2호
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    • pp.21-26
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    • 2006
  • In modern systems technology, increasingly more systems are anticipated to operate in real-time environment. These systems are usually complex to implement since it is not easy to satisfy the real-time requirement for both hardware and software components simultaneously. In this paper, we first review an object-oriented development process that was proposed earlier for software-intensive real-time system using the Unified Modeling Language (UML). We then study how to improve the problems that the UML approach might have. Applying the systems engineering(SE) process yields useful results which include : 1) an improved requirements management over the whole system life-cycle ; 2) a detailed scenario on how to carry out the SE process ; and 3) a conversion process from the text-based requirements to the UML-based graphic ones.

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국방 무기체계 연구개발 사업에서 진화적 개발의 실효적 수행 방안에 관한 연구 (A Study on the Effective Implementation Methodology of Evolutionary Development in Defence Weapon System Research & Development Project)

  • 김중명;차승훈;이혜진;유제상;최상욱
    • 시스템엔지니어링학술지
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    • 제17권1호
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    • pp.35-42
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    • 2021
  • Recent defense R&D projects have been required as weapons systems applied with advanced technology considering exports. As a result, the complexity of the applied technology increases, and the risk of system development increases. Under these circumstances, an effectives method of performing evolutionary development for economical and timely deployment is presented. To this end, we hope that this study, which proposed the maintenance of related laws and measures for realistic and active evolutionary development, will help the R&D of the weapons systems.

의료시스템과학 교육의 임상실습 적용 사례 개발과 적용 (Development and Implementation of Health Systems Science Education in the Clinical Learning Environment )

  • 나상훈
    • 의학교육논단
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    • 제25권3호
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    • pp.229-242
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    • 2023
  • Health systems science is a new medical educational field added to the traditional medical education curricula of basic and clinical sciences. Health systems science emphasizes a more comprehensive approach utilizing systems thinking to care for patients, including interactions between multiple healthcare systems. In this review, I explore how health systems science education can be applied when medical instructors teach students in clinical clerkships through representative case studies. This study first looks at examples of health systems science education in clinical clerkship in the United States and suggests how to develop the curriculum of health systems science for clinical learning environments in Korea by combining Kotter's 8-step change management model and Kern's 6-step curriculum development model. Finally, based on practical examples from actual clinical practice education situations, suggestions are made regarding how to develop the entire educational program of a medical school from the stage of applying health systems science at the individual level to clinical practice education.