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CNN 이용 시 분류정확도를 향상시키기 위한 건축이미지 검색 방법
이상현(Lee, Sang-Hyun),노녕(Lu, Ning) 대한건축학회 2020 대한건축학회논문집 Vol.36 No.9
This research proposes the method of using the Convolutional Neural Network (CNN) more efficiently in the classification of architectural images. The characteristics of images are not considered in the conventional methods of classifying architectural images. In this research, architectural images are first categorized primarily as two-dimensional images such as facades or three-dimensional images such as perspectives before classifying the types of the images. We compared the cases, where the types of architectural images are classified without being categorized as two- or three-dimensional images, with the cases where they are classified after the preliminary categorization is conducted. In this research, it was confirmed that the latter had higher classification accuracy. This implies that for image classification using the CNN, it could be effective to classify the types of architectural images after categorizing the basic preliminary delimitation based on characteristics of the images. We anticipate that the outcome of this research for architectural images will also apply to classification of other types of images.
PSM 제도의 효율적 개선방안 -장외영향평가제도와 위해관리계획서와의 비교분석을 중심으로-
권우택 ( Woo-taeg Kwon ),성승환 ( Seung-hwan Sung ),갈원모 ( Won-mo Gal ) 대한설비관리학회 2017 대한설비관리학회지 Vol.22 No.3
Domestic petrochemical-based industries in order to prevent major industrial accidents since 1996, introduced the PSM(Process Safety Management) system, KOSHA (Korea Occupational Safety and Health Agency) divided into P, S, M+, M- grade through the validation and verification grade and then Ministry of Employment and Labor has been checking the implementation status of PSM workplace. According to the national audit submissions, P, S grade workplace accounted 19 of 27 dead(70%) over the last three years major industrial accidents. Regard of this study is the main basis of comparison, the analysis of the PSM system and relevant summary of the issue through the opinions of site engineer with a detailed review of the existing research results, management plan attempts to organize and comparison with similar off-site consequence analysis and risk management plan to compare the differences and features. For an in-depth investigation to conduct a survey and interview survey of experts, including representatives of the PSM consulting agency find out the problems of the PSM system, we propose a reasonable improvement method for effective PSM system.
초임계 이산화탄소 Brayton 에너지 전환계통 예비설계
차재은(Jae-Eun Cha),어재혁(Jae-Hyuk Eoh),이태호(Tae-Ho Lee),성승환(Sung-Hwan Sung),김성오(Seong-O Kim),김태우(Tae-Woo Kim),김동억(Dong-Eok Kim),김무환(Moo-Hwan Kim) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
The supercritical CO₂ Brayton cycle energy conversion system is presented as a promising alternative to the present Rankine cycle. The principal advantage of the S-CO₂ gas is a good efficiency at a modest temperature and a compact size of its components. The S-CO₂ Brayton cycle coupled to a SFR also excludes the possibilities of a SWR (Sodium-Water Reaction) which is a major safety-related event, so that the safety of a SFR can be improved. KAERI is conducting a feasibility study for the supercritical carbon dioxide (S-CO₂) Brayton cycle power conversion system coupled to KALIMER(Korea Advanced LIquid MEtal Reactor). The purpose of this research is to develop S-CO₂ Brayton cycle energy conversion systems and evaluate their performance when they are coupled to advanced nuclear reactor concepts of the type under investigation in the Generation Ⅳ Nuclear Energy Systems. This paper contains the research overview of the S-CO₂ Brayton cycle coupled to KALIMER-600 as an alternative energy conversion system.