• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 봄 학술논문 발표대회
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• pp.353-354
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• 2023

Improving productivity in industries is a very critical issue, and improving labor productivity is especially important in construction industry, which is a labor-intensive industry. However, researches on labor productivity in construction industry are insufficient, and most of previous studies have limitations in terms of specificity and logic. In this study, fuzzy DEMATEL method was used to structural analyze of influence factors for labor productivity in construction industry based on previous researches and expert survey. The result of this study contributes to deriving priorities for improving labor productivity.

• 한국건축시공학회지
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• 제23권6호
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• pp.751-760
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• 2023

토공사 프로젝트에서 생산성 향상은 공기와 비용에 직접적인 영향을 미치는 중요한 키워드이다. 그러나 토공사의 생산성에 대한 기존 연구는 정성적인 데이터와 방법에 의존하는 경우가 많아 중요성에 비해 미흡한 실정이다. 본 연구에서는 fuzzy DEMATEL 방법을 적용하여 토공사의 생산성에 영향을 미치는 요인에 대한 구조분석을 수행하였다. 본 연구의 결과는 토공사 생산성 향상을 위한 우선 개선사항 도출에 기여할 것으로 판단된다.

• 해양환경안전학회지
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• 제27권2호
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• pp.228-237
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• 2021

최근 부산시는 선박관리산업의 관심을 증대시키고, 경쟁력을 강화 및 지원하기 위한 조례를 제정하였다. 본 연구는 직관적퍼지 DEMATEL&ISM법을 이용하여 선박관리산업 경쟁력 강화의 원인요인을 도출하는데 있다. 이를 위해 먼저 선박관리산업발전법에 명시된 내용을 기반으로 8개의 요인을 추출한다. 두번째는 직관적 퍼지수를 표준퍼지수를 이용하여 크리습 수로 변환한다. 세번째는 DEMATEL법을 이용하여 영향관계를 분석하고 ISM법을 이용하여 요인에 대해 우선순위를 결정한다. 영향관계 분석결과 원인요인은 기술적 선박관리 역량 제고, 육상관리인력 전문성 제고, 한국선원인력 자질향상으로 나타났다. ISM법에 의한 우선순위는 한국선원 자질향상, 육상관리인력 전문성 제고, 기술적 선박관리 역량제고, 상업적 선박관리 역량 제고, 종합정보시스템구축 = 선원 근로조건 및 고용환경 개선 = 금융 등 지원 = 외국인 선원 공급 강화 등의 순으로 나타났다. 따라서 전체 영역에서 원인요인이며 우선순위가 높은 상위 3개의 요인에 대해 우선적인 정책추진이 필요하다.

• Nuclear Engineering and Technology
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• 제56권9호
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• pp.3472-3482
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• 2024

This study proposes a modified extended cognitive reliability and error analysis method (CREAM) for achieving a more accurate human error probability (HEP) in advanced control rooms. The traditional approach lacks failure data and does not consider the common performance condition (CPC) weights in different cognitive functions. The modified extended CREAM decomposes tasks using a method that combines structured information analysis (SIA) and the extended CREAM. The modified extended CREAM performs the weight analysis of CPCs in different cognitive functions, and the weights include cognitive, correlative, and important weights. We used the extended CREAM to obtain the cognitive weight. We determined the correlative weights of the CPCs for different cognitive functions using the triangular fuzzy decision-making trial and evaluation laboratory (TF-DEMATEL), and evaluated the importance weight of CPCs based on the interval 2-tuple linguistic approach and ensured the value of the importance weight using the entropy method in the different cognitive functions. Finally, we obtained the comprehensive weights of the different cognitive functions and calculated the HEPs. The accuracy and sensitivity of the modified extended CREAM were compared with those of the basic CREAM. The results demonstrate that the modified extended CREAM calculates the HEP more effectively in advanced control rooms.

• 한국항해학회지
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• 제4권2호
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• pp.7-38
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• 1980

Nowadays researchers attach a great importance to the problems concerned with scientific information in the field of science and engineering. There are some reasons for it, that is, ⅰ) the amount of scientific information increases in proportion to the activities of scientists and engineers, so it is difficult to pick up a real valuable information ⅱ) it becomes more important to use a variety of information in proportion to the spread ofthe branch of science ⅲ) since the medium of scientific information is mostly technical papers, it is very difficult to mechanically transact these papers and to keep all documents and scientific informations for a long time. To cope with these difficult situations, many technical skills have been developed, for example, data-base, automatic information retrieval, micro-film and so on. But there are comparatively few investigation on the matter how the researchers who are users and producers think about the systematization of scientific information usage, so this paper investigates the thought and information needs of researchers, and proposes a basis of a method for systematization of scientific information usage. The author inspects the actual conditions of scientific information, reconsider the method which has been used and investigates the matter of how researchers whose interest is closely related to the study of marine affairs think about problems of scientific information usage by thequestionarie of Fuzzy-DEMATEL method. Also, FSM which is method for structuring hierarchy for the several complex problems on the basis of fuzzy sets theory is adopted as a tool of analysis. We can understand the key problems and make a story to solve the systematization of scientific information usage from the results of the analysis and those results will be directly applicable to construct a new system for scientific information usage.