• 시스템엔지니어링학술지
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• 제17권1호
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• pp.43-52
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• 2021

The aim of this study is to propose the design suitable for sustainability evaluation model of the mobile industry considering system process (SEP). Although a quantitative evaluation was conducted on the link between the national sustainability report and the mobile industry, it was confirmed that it was difficult to identify stakeholders. So it is necessary to develop the design process suitable for the more operator-specific interfaces. The Human System Integration (HSI) methodology was proposed through linkage with work domain analysis. Agile methodology and Resilience engineering methodology were added for sustainable model design. The proposed sustainability system evaluation model is applied so that it can be easily used in all industries.

• 한국항해항만학회지
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• 제32권8호
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• pp.629-636
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• 2008

현재 기존 철송 시스템에 있어서 문제점인 출발지와 목적지 사이 발생하는 복잡한 작업 프로세스(job process)를 간소화하여 철송 운임비감소와 물류운송의 체계 개선 및 활성화에 기여할 수 있는 시스템으로 DMT(Dual Mode Trailer) 시스템을 들 수 있다. 이에 본 기술의 국내적용 및 개발을 위해 기술동향 조사 및 국내 적용시 고려사항, 국내 적용 접합 모델 도출 등 기술성을 분석하였다.

• 한국해양공학회지
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• 제27권5호
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• pp.1-9
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• 2013

Because the environmental regulations for ships are getting tighter, green ships employing eco-friendly technology have recently received a large amount of attention. Among them, various studies for electric propulsion ships have been carried out, particularly in the United States, European Union, and Japan. On the other hand, research related to electric propulsion ships in Korea is in a very nascent stage. In this paper, an estimation process based on the rough requirements of ship-owners for the operating performance of electric propulsion ships is proposed. In addition, the estimation process is applied to a small fishing boat for verification of the process. These results are expected to be used as design guidelines in the early stage of the design process for electric propulsion ships.

• 시스템엔지니어링워크숍
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• 통권1호
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• pp.145-149
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• 2003

Systems engineering test and evaluation technology development program for (Korea) Express Tilting Train(TTX) system in progress is a national large system development program that is not only a large-size and complex but also muti-disciplinary in nature. For the TTX test and evaluation technology development, verification requirements that could verify system function and performance, should be derived from system specification. Hereafter, this could be listed as items of test. System engineering process establishes traceability between items of test and system requirements. These tasks could be accomplished by the schema. Using the Core, a system engineering tool, TTX program could be database and oter system related to TTX program will be developed effectively and efficiency.

• 시스템엔지니어링학술지
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• 제11권1호
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• pp.81-93
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• 2015

Steam Reforming H2 Generation (SRH2G) System is a chemical process to produce hydrogen through steam reforming of hydrocarbon. Largely speaking, there are two types of materials for the SRH2G: 1) Oil and coal, and 2)Natural Gas such as shale gas. From the perspective of cost, quality (purity), and environmental burden (pollution), the latter is much more desirable than the former. For this reason, research on SRH2G using natural gas is actively carried out, and implemented and operated in the various industry. In this paper, we develop a natural gas based SRH2G system via systems engineering approach. Specifically, we first derived stakeholder requirements, followed by systems requirements and finally system architecture via a tailored SE process for plant (called Plant Systems Engineering (PSE) process) based on ISO/IEC 15288. The developed method was applied to iron and steel plant as a case study. Through the case study, by the SE approach, we were convinced that a successful system satisfying stakeholders' requirements within the given constraints can be developed, verified and validated.

• 융합보안논문지
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• 제12권4호
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• pp.25-31
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• 2012

정보보호수준 검증방법은 프로세스를 중심으로 정보보호 제품, 시스템, 서비스를 개발하려는 조직의 개발능력을 평가하는 SSE-CMM(System Security Engineering-Capability Maturity Model)모델이 있다. CMM은 소프트웨어 개발업자의 개발능력을 평가하고 개선시키며 조직 전체의 성숙도 수준을 측정하는 모델이다. 그러나 이 방법은 보안엔지니어링 프로세스의 개선과 능력을 평가하는데 조직차원이 아닌 개별 프로세스의 능력수준 평가에 그치고 있다. 본 연구과제에서는 이들 기존연구를 근간으로 기술적 관점에서 정보보호수준 성숙단계를 정의하고자 한다. 연구방법은 정보보호취약점 진단, 기술보안체계 검증, 기술보안 이행실태 진단으로 구성한다. 제안하는 방법론은 업무현장에서의 범위와 수준에서 정보시스템의 현재 상태, 취약점 실태, 정보보호 기능 이행과 기능만족도 수준을 평가한다. 제안된 방법에 의한 평가결과는 정보보호 개선대책 권고모델 수립 근거로 활용하여 정보보호 개선의 활용을 목표로 하고 있다.

• 대한조선학회논문집
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• 제53권2호
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• pp.127-134
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• 2016

This paper presents practical issues for test and evaluation(T&E) methods to develop defense systems. Our argument is motivated by several domestic defense cases and the cases lead us to discuss two main factors for reliable defense systems development: 1) statistical approaches and 2) technical schemes. Specifically, statistical approaches enable to provide credible interpretations about T&E results in the decision-making process. With practical T&E results of the “Red Shark” torpedo, we performed statistical hypothesis tests and suggest a minimum sample size to accept the hypothesis. Next, technical schemes have more direct effects on improving reliability of developed defense systems and we shortly introduce tools development for systems verification that is required to integrate several sub-systems, e.g., combat, sensor, weapon, and communication systems, within a defense system. We additionally summary some domain cases using modeling and simulation techniques for successful T&E. In closing, we expect that the paper shows empirical investigation and lessons learned with these two practical issues, which provides a guide those who desire to make decisions about reliable defense systems development.

• 한국건설관리학회논문집
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• 제9권2호
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• pp.136-145
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• 2008

공공건설사업의 발주방식을 다양화하려는 차원에서 재정경제부는 2007년 10월 $\ulcorner$국가계약법시행령$\lrcorner$ 개정을 통해 기술제안형 입찰인 '기술제안입찰', '설계공모 기술제안입찰'을 새로이 도입하였다. 이러한 입찰은 사업의 특성 및 목적에 맞게 입찰자들에게 기술제안서를 요구한 후 이를 평가하여 낙찰자를 선정하는 방식이다. 본 연구는 국내에 처음 적용되는 기술제안형 입찰제도의 효과적인 운영을 위한 가이드라인을 제공하는 것을 목적으로 하고 있다. 이를 위해 국내외 관련 문헌 및 사례를 분석하여 운영모델의 틀을 구축하였으며, 이후 수차례의 전문가 자문을 통해 표준적인 운영 프로세스, 기술제안서 작성기준, 기술제안서 평가기준, 그리고 낙찰자 결정방법을 개발하였다. 발주자의 중요한 의사결정 요소인 낙찰자 결정방법은 가상 사례를 이용한 시뮬레이션을 수행하여 '기준적합최저가', '가중치', '가격조정입찰', '기술조정점수'의 4가지 낙찰방식이 갖는 정량적 인 특성과 적용기준을 시사점으로 도출하여 제시하였다.

• 한국군사과학기술학회지
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• 제11권3호
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• pp.76-88
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• 2008

The purpose of the research is to propose an earned-value indicator for technical performance measurements of an ongoing defense R&D project and the associated measurement, analysis and the implementation process for data collection and usages. Furthermore, the study demonstrates the evidences of benefits and validity of the proposed approach through the enabling tool development and its application examples.

• 시스템엔지니어링학술지
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• 제12권2호
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• pp.19-27
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• 2016

Many countries concentrated on the space developments to enhance the national security and the people's quality of life. A space launch vehicle for accessing the space is a typical large complex system that is composed of the high-technology like high-performance, high-reliability, superhigh-pressure, etc. The project developing large complex system like space launcher is mostly conducted in the uncertain environment. To achieve a goal of the project, its success probability should be enhanced consistently by reducing its uncertainty during the life cycle: it's possible to reduce the project's uncertainty by performing the risk management (RM) that is a method for identifying and tracing potential risk factors in order to eliminate the risks of the project. In this paper, we introduce the risk management (RM) process applied for a Space Launch Vehicle R&D Project.