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이응찬(Eungchan Lee),곽정민(Jeongmin Kwak),유지헌(Jiheon Ryu),유병용(Byeongyong Yoo) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Liquefied hydrogen is the optimal alternative to long distance transportation of hydrogen with large-capacity in a safe and efficient way. The liquefied hydrogen should be stored and transported to –253℃ for a lower than –163℃, which is a storage temperature of LNG at atmospheric pressure. Liquefied hydrogen carriers require a cargo tank with a higher insulation performance than conventional LNG carriers and cargo handling system with minimized the loss of boil-off gas. In this paper, the zero-vent cargo handling system capable of efficiently treating the liquefied hydrogen boil-off gas is introduced by targeting a 20,000 m3-class liquefied hydrogen carrier of KSOE.
FMECA 적용을 통한 공리적 설계의 신뢰도 향상 방법론
구본근(Bongeun Goo),안준건(Junkeon Ahn),곽정민(Jeongmin Kwak),장대준(Daejun Chang),정현(Hyun Chung) (사)한국CDE학회 2011 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2011 No.1
This paper presents the synergetic use of the Axiomatic Design principles and FMECA (Failure mode, effects, and criticality analysis) for the reliability-critical system design. The hierarchical structures of the Axiomatic Design and the FMECA are reviewed and the possible synergetic use in the FR-DP assignment. The proposed methodology is validated in the case study of the Mobile Harbor docking system design.
김지훈(JiHun Kim),신도경(DoKyung Shin),곽정민(JeongMin Kwak),문영식(YoungShik Moon) 대한전자공학회 2006 대한전자공학회 학술대회 Vol.2006 No.11
In this paper, a novel method for detecting multi-object using image segmentation and SIFT descriptor. Our research consists of four steps. In the first step, an image is segmented into several regions by JSEG algorithm. In the second step, for segmented regions, dominant colors and the corresponding color histogram are constructed. In the third step, by using dominant color and color histogram, candidate regions where objects may exist are identified. In the final step, real object regions are detected from candidate regions by SIFT matching. As experimental results, the proposed method shows the improved performance over exist ones.