• Proceedings of the Korean Society of Marine Engineers Conference
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• 2011.06a
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• pp.317-320
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• 2011

정보통신 기술의 발달과 환경오염 문제의 심각성에 대한 인식 때문에 근래에 선박에 새로운 개념이 도입되고 있다. 전전기 스마트선은 전기 추진체계를 포함한 선박 내 모든 전력계통 구성품의 관련 요소들을 선박의 목적과 특성에 맞게 운영 되어지는 신개념의 선박이다. 이 연구에서는 전전기선 체계통합 시스템에 대하여 설명할 것인데, 이는 선박의 추진 및 전력, 기관제어계통 등 전체 시스템에 대한 획득 및 수명주기 비용 절감을 위한 통합 관리 체계를 목적으로 한다. 전기추진체계를 이해하기 위해서는 선박 내에 모든 전력 구성품의 통합 적인 이해가 필요 하며, 이를 위해서 전력제어, 전력배전, 통합 최적화를 위한 개념에 대해서 정확히 이해하여야 한다. 이 연구에서는 체계통합기술의 전반적인 이해를 돕는 데에 있다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2006.05a
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• pp.198-202
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• 2006

다양한 신제품이 출시되고 제품의 수명 주기가 짧아지는 기업 환경에서, 시장 경쟁력을 갖추고 소비자의 요구사항에 적합한 제품개발의 중요성이 부각되면서, 이에 대응하는 대학 교육과정의 개발 및 운용이 필요하다. 본 연구는 혁신제품개발 모듈 교육과정 개발에 필요한 교육주제, 수업운영방식, 산학연계 방식에 대해 학생, 산업체 실무자의 의견을 조사하였다. 본 설문에서는 제품개발 관련 문헌조사를 통해 추출된 7개 부문(기획, 타당성 분석, Concept 개발, 제품 설계, 제조 공정 설계, 생산, 윤리와 법)의 46개 교육주제에 대해 교육 선호도와 실무 적용 중요도를 조사하였다. 또한, 기존 제품개발 관련 교과목들의 수업 구성 비율을 파악하고 희망 수업구성 비율, 수업 진행방식에 따른 요구사항, 실습 및 프로젝트 진행방식에 대한 희망사항을 조사하였다. 마지막으로, 본 연구는 산업체 실무자들로부터 산학연계 방식에 대한 의견을 수렴하였다. 본 연구에서 파악된 학생, 산업체 실무자들의 의견은 제품개발 교육과정 구축을 위해 유용한 정보로 활용될 수 있을 것이다.

• 한국벤처창업학회:학술대회논문집
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• 2016.04a
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• pp.157-159
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• 2016

이 연구의 목적은 소자본 외식업소 창업시 사전 준비단계 요인들의 필요성과 그 효용성을 알아보는 데 연구목적을 세우고, 서울 및 경기지역에 소재하고 있는 외식업체 창업자들을 대상으로 전문조사원이 설문조사를 실시하여 수집된 자료를 spss(통계 패키지 프로그램)를 활용하여 분석하였다. 창업전 준비단계별 중요성 평가와 경영성과 간의 관계를 규명함으로써 새로 소자본 외식업소 창업을 하고자 하는 예비 창업자들에게 좀 더 효율적인 정보를 제공하고자 한다. 연구 결과, 창업준비성 요인인 창업교육, 창업동기, 업종경험, 자금조달 능력,사업자 역량, 가족의 동의, 창업자의 건강이 타 요인 대비 더 많이 강조되었으며, 창업준비성 요인에 대한 경영성과 우수집단의 중요성 평가가 저조집단 대비 통계 적으로 유의미하게 높았다. 업종(아이템) 선정 요인인 아이템과 창업자, 창업자금, 입지와의 적합성, 수명주기, 향후 발전성, 유행성, 노동력 공급의 용이성이 타 요인 대비 더 많이 강조되었으며, 아이템 선정 요인에 대한 경영성과 우수집단의 중요성 평가가 저조집단 대비 통계적으로 유의미하게 높았다. 상권내 입지분석 요인인 경쟁점포, 유동인구, 교통 편리성, 주목성, 가시성이 타 요인 대비 더 많이 강조 되었으며, 상권내 입지분석 요인에 대한 경영성과 우수집단의 중요성 평가가 저조집단 대비 통계적으로 유의미하게 높았다. 이 같은 결과는 여러 준비단계 중 특히 창업준비성 요인과 아이템선정 요인, 상권내 입지분석 요인이 중요하며, 이는 장기적으로 안정된 경영을 뒷받침해주는 요인임을 시사한 것으로 볼 수 있다.

• Management & Information Systems Review
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• v.7
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• pp.227-245
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• 2001

The object that we have researched the design for a long life of product is to search for the method to cope with the various environment problems where our mankind is confronting in the field of Production Design. The environment problem on earth is affecting seriously the enterprise which produces the product, the user who consumes it and even the field of product design. Now we live our daily life with a lot of artifacts while the citification and modernization have been progressing around us. Especially, 20 century was the times of the highly advanced scientific civilization and industrialization. Therefore it affected decisively our life environment base nowadays. The result was that our human life became rich because of the advanced development of industry, productivity and distribution structure. On the other side, the industrial system in the period of these massive production and massive consuming is bearing various problems proportionally. Those are the depletion of resources and energy, earth environmental pollution and various kinds of waste. In addition, the material which cannot recycle is appearing at the large quantity. This is the actuality of now. Our subject is how product design will cope with it as counter measures and the subject is very important to our mankind and earth environment.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.60 no.11
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• pp.2176-2181
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• 2011

This paper estimates the life cycle cost(LCC) of a propulsion control system using the maintenance information in the high speed train(KTX-1). Life cycle costing is one of the most effective approaches for the cost analysis of long-life systems such as the KTX-1. Until now, most life cycle cost of the system has been studied as a whole system viewpoint. But in case of railway industry, LCC studies are needed on the subsystem like a propulsion control system because subsystems are developed continuously localization. This paper proposes the life cycle cost model which fitted to estimate life cycle cost (LCC) using maintenance information manual. As a result, LCC on propulsion control system increased moderately expect for periodical time when major parts are replaced at the same time. Results will be reflected in the development of domestic products.

• Journal of the Korean Institute of Gas
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• v.7 no.2 s.19
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• pp.1-6
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• 2003

In this work, procedure evaluating failure modes such as pipe rupture, large scale leak, and small scale leak was suggested using equations to assess remaining strength by corrosion failure. Additionally, the method to predict probability of failure was suggested according to the aforementioned failure modes, and by combining data on corrosion rate, probability of long-term failure can be induced. This work will be very useful in predicting lifetime or exchanging period of pipeline.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.10 no.3
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• pp.1-8
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• 2011

The parking guidance system can increase driver's convenience with detailed parking information service, but it continuously consumes electrical energy with large amount of sensors, displays and control modules. With the increase of the demand for green and sustainable building design, it becomes a meaningful issue for parking guidance system to reduce operating power. This paper presents the preliminary design and estimated results of a parking guidance system which is optimized to reduce the power consumption mainly on detectors and displays. The system design is based on commercial wireless parking detectors, wireless-loop-detector and earth-magnetic-detector. We have performed system architecture design, communication network design, parking information service scenario planning, battery life regulation and at last operating power estimation. With the 7 years of battery replace cycle, the estimated result for power consumption of designed system was 0.33W/slot, which is 13% of the traditional system's estimation result. The estimated annual maintain cost was similar to the traditional ultrasonic sensor based system's. The low power operable designed system can be expected to reduce CO2 emission.

• Journal of the Korea Society of Computer and Information
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• v.18 no.9
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• pp.111-120
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• 2013

Uncertainty in Context-aware computing is mainly a consequence of the complexity of context acquisition mechanisms and context processing. The presence of uncertainty may harm the users' confidence in the application, rendering it useless. This paper describes a three-phase strategy to manage uncertainty by identifying its possible sources, representing uncertain information, and determining how to proceed, once uncertain context is detected. The level of effort that is necessary to eliminate the uncertainty of context information affects the reliability of the system, because Sensor network system have no intervention of humans. In this paper, We applied proposed method to the development for the sensor network system, Uncertainty management can be applied a part of the system development life-cycle. It confirmed that result of testing show that detection performance is stable.

• Journal of Korea Society of Industrial Information Systems
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• v.20 no.1
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• pp.103-112
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• 2015

Because of increased global competition, rapid technology development, and shorten product life cycle, manufacturing firms needed to quickly adapt to the changes of customer and competitive environment. During last 20 years, lean production and agile manufacturing have been used to enhance the efficiency and effectiveness of manufacturing firms. This study is purposed to examine the antecedents of agility and to statistically analyze not only the effect of antecedents on agility but also the effect of agility on business performance. This study used the structural equation model and found that intra-organizational cooperation, inter-organizational cooperation, and mutual trust had the significant effects on agility. And it was found that agility had a significant effect on operation performance and strategic performance. Agility has been one of important competitive advantages enhancing the supply chain process and firm's competitiveness. This study contributes to widen the practices of agility capability.

• Journal of the Korea Society of Computer and Information
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• v.16 no.3
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• pp.17-25
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• 2011

Green IT, composed term with Green and Information Technology(IT), use IT for energy savings and carbon emission reductions. Green IT went beyond the scope of greening IT, and recently it's concept is expanded as far as counterplan of climate change including greening other industries by IT. 85% of total greenhouse gas emissions from the energy sector and 20% of them comes from transport parts, so it is time to research IT for automotive industry. In this paper, we take up the knowledge based fuzzy logic to provide life cycle analysis associated with greenhouse gas emissions for industry produced warranty claims frequently such as automobile industry. We propose a analysis method of warranty claims using expert knowledge about the warranty in car exhaust systems related to greenhouse gas emissions, past test results of malfunction, analysis of past field data, and warranty data. Furthermore, we propose life knowledge-based GWS (Greenery Warranty System). We demonstrate the applicability of IT in eco-friendly automotive industry by implementing knowledge-based fuzzy logic and applying.