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이주완 ( Lee Joo-wan ),최용석 ( Choi Yong-seok ) 한국해운물류학회 2022 해운물류연구 Vol.38 No.4
4차 산업혁명에 의한 산업의 서비스화 혁신과 포스트 코로나 시대에 적응하기 위한 항만물류 전략으로 항만물류 서비스산업의 국제경쟁력 강화방안에 대하여 항만물류 서비스산업의 현황과 실증분석을 통해 전문인력 양성과 기술연구개발 수행을 위한 전문교육연구기관의 설립을 제시하고자 한다. 항만물류 서비스산업의 국가경쟁력 강화를 위한 AHP 분석 결과를 살펴보면, 현시점에서 항만물류 서비스산업에서 가장 필요한 부분은 전문교육연구기관의 설립이며, 효율적인 운영을 통한 수익다각화 방안과 설립 위치가 가장 중요한 판단기준인 것으로 도출되었다. 향후 항만물류 서비스산업의 국가경쟁력 강화를 위한 전문교육연구기관 설립을 위한 발전된 분석을 위하여 AHP 이외 다양한 분석 모델을 이용하여 연구를 진행하여야 할 필요가 있다. We would like to suggest the establishment of a specialized educational research institute for training and technology R&D. In addition, through prior research, human factors such as educators and students required for the port logistics service industry, software factors such as education and technology R&D programs, and hardware factors such as optimal location and appropriate facilities for specialized educational and research institutes are used to discover measurement areas. Looking at the final analysis results for strengthening the national competitiveness of the port logistics service industry, it can be seen that the most necessary part of the port logistics service industry at this point is the establishment of a specialized education and research institute, and the plan for profit diversification through efficient operation and the location of establishment It was drawn to be the most important criterion for judgment.
경천사십층석탑의 오염물분포별 현황조사를 통한 석탑 풍화도에 관한 연구
김진형,이주완,강대일,Kim, Jin-Hyoung,Lee, Joo-Wan,Kang, Dai-Ill 국립문화재연구소 2004 保存科學硏究 Vol.25 No.-
The conservation treatments of 10-storied pagoda in the temple of Kyoungchunsa is progressed favorably to come to the finish since 1995. Most of all, the important conservation treatments are stone crack, exfoliation and partial form modification. This pagoda has been made up a complicated structure constructed using 142 stones. Therefore, the stone crack and exfoliation have been occurred as very varied forms. Especially, the stylobate of the pagoda has 19 substitution stones of 48 stones, which is40% of modern stone substitution. It is supposed that there is serious weathering on the stones. The other stones, which are no substitution stones, have some kinds of weathering and so we carried out inside replenishment and partial outside reconstruction of crack stones using high molecular resin and substitution stone. The stone of each storey has also partial difference, but the condition of serious weathering on the whole. We can detect general degree through treatment of high molecule resin or distribution research of contaminated material on 10-storied pagoda in the temple of Kyoungchunsa. Especially, we are able to analyze general weathering degree and know details weathering of each storey or direction for the difference of replenishment quantity and different pattern of stone crack degree. Also, the distribution research will accomplish very important parts of examining environment effects and use as research data of cultural heritage conservation field.
직접변위설계법과 대표응답을 이용한 모멘트골조 구조물의 시스템 연성요구도 평가
이주완,최원호,이동근 대한건축학회 2001 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.21 No.1
Generally, the ductility demand of the system is a very important factor to evaluate the seismic performance for the earthquake resistant design. The purpose of this study is to compare the two methods, which determine the system ductility demands of the moment frame structures based on the performance based seismic design. The first method, proposed by Priestley, is based on the Direct Displacement Based Design and the other one is a method that evaluates the ductility demand of the system by the responses of equivalent SDOF system. The adequacy of the fitter method, which determines the system ductility demands based on the equivalent responses method, is demonstrated in this study.
이후철,이주완 대한금속재료학회(대한금속학회) 1999 대한금속·재료학회지 Vol.37 No.4
The effects of Sn addition on the internal oxidation of Ag-Cd alloys were studied. Four types of Ag-15Cd alloys with p.3, 0.5, 0.8, snd 1.5 wt% Sn were prepared by induction melting in Ar atmosphere. Alloys were internally oxidized at 677, 735 and 782 C with 1.0-3.0×10^5 Pa oxygen partial pressure. Internal oxidation increased the hardness of all alloys by 65-100%. Alloys with higher Sn content showed higher hardness. Oxidation condition proved to have significant influence on the oxidation microstructure and wear resistance. The oxides observed after internal oxidation were identified as SnO₂, Cd₂SnO₄ and CdO. Cd₂SnO₄ particles were embedded within CdO particles. The mechanism of oxidation is considered as follows. First. Sn is oxidized to form SnO₂, then it transforms to Cd₂SnO₄ by furthier reaction with Cd and O. Finally CdO grows around the Cd₂SnO₄ particles. Because Cd₂SnO₄ particles act as nuclei far CdO precipitation, finer dispersion of oxides occurs in higher Sn content alloys resulting in higher hardness and improved wear resistance of the alloy.