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RISS 인기검색어
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- 저자 : 류길수(M. O. So) (검색결과 3 건)
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소명옥(M. O. So),류길수(K. S. Rhyu),정재학(J. H. Chung),이윤형(Y. H. Lee),진선호(S. H. Jin),최한우(H. W. Choi) 한국해양대학교 해사산업연구소 2003 海事産業硏究所論文集 Vol.14 No.-
Generally, the main difficulty in the composition of tank-level control system may be in the point that plant parameters are severely varied according to the change of operating point. In order to cope with this difficulty, in this paper, an adaptive control is employed using model-following technique based on the optimal control law. Through the simulations and experiments the following results were observed. 1) The steady state error was not founded under the parameter variations caused by the change of operating point. 2) In spite of the change of operating point, the corresponding gains which were stored in the computer were found to be automatically updated so that the controller could have the adaptive ability. And also, the control specifications in view of transient response were found to be satisfied.
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KDW를 이용한 해양 관련 검색엔진에서의 동의 질의어 처리에 관한 연구
윤병수(B. S. Youn),류길수(M. O. So),소명옥(K. S. Rhyu) 한국해양대학교 해사산업연구소 2003 海事産業硏究所論文集 Vol.14 No.-
Recently various information suppliers provide information via WWW, and the necessity of search engine grows larger. However the efficiency of most search engines is low comparatively because of using simple pattern match technique between user's query and web document. And manifest contents to query for special expert field are much worse. A specialized search engine returns the specialized information to meet each user's search goal. It is a recent trend to develop specialized search engines in many countries. For example, in America, there are sites that search only the updated headline news and the federal law and the government and so on. However, most of them don't satisfy the user's needs. This paper proposes the specialized search engine for ocean information that uses user's query related with ocean and the association rules in web data mining. So the specialized search engine for ocean provides more information related to ocean because of raising recall about user's query.
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하이브리드 지식표현을 이용한 선박엔진 고장진단시스템의 개발에 관한 연구
최욱현,소명옥,하창승,류길수 한국전문가시스템학회 1998 학술대회 Vol.2 No.1
This paper presents the design and implementation of ship engine diagnosis system using hybrid knowledge representation method and certainty-factor rule-base. The Monitoring system of ship engine room gets measuring data in real-time from distributed local units, processes, displays an CRT and saves them in the database. The alarm management function checks the alarm state of the monitoring data. If the alarm occurs, it displays on CRT and saves at database. This ship engine diagnosis system uses this monitoring data and alarm data to diagnosis data. The knowledge representation is used object-oriented knowledge representation method. The diagnosis data and abnormal states are represented each objects and abstracted class of diagnosis data and class of abnormal state. We use object-oriented concepts that are abject hierarchical structure, inheritance, method, pattern matching etc. then we can construct knowledge-base effectively. We use certainty-factor method for handling uncertainties of evidence and rule. The certainty-factor rule-base is developed using pattern matching and method that is attached at each abnormal state objects.
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