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선형최적화 모형인식을 위한 지식베이스와 추론기관의 설계
김우제 대진대학교 1994 大眞論叢 Vol.2 No.-
This paper presents the design of knowledge base and inference engine for identifying the Linear Optimization Models. For the design of knowledge base, some important factors of Linear Optimization Model were analyzed and the partial order to show the relationship among the Linear Optimization Models was defined. Based on this analysis, a knowledge base was designed to represent a linear optimization model as a frame based system. The inference engine used the pattern matching technique For the efficiency of inference, the order of pattern matching and the searching space was defined and an appropriate searching strategy was applied.
김우제 대진대학교 1998 大眞論叢 Vol.6 No.-
The purpose of the paper is to develop the methods for preprocessing for simplex method and interior point method in linear programming. We classified the methods for preprocessing into (1) analytic methods, (2) methods for removing implied free variables, (3) methods using pivot or elementary row operations, (4) methods for removing linearly dependent rows and columns, and (5) methods for dense columns. We noted some considerations which should be paid attention when preprocessing are applied to simplex method and interior point method. We implemented the proposed preprocessing method, and tested it with 28 large scale problems of NETLIB. We compared the results of it with those of preprocessing routines of SOPLEX, HOPDM, BPDPM and CPLEX.
김우제,김순택,권경술,정태안 대한피부과학회 1974 대한피부과학회지 Vol.12 No.3
Fourteen cases of porokeratosis were studied clinicallv. There were four clinical types consisting of classical plaque type(Mibelli), superficial disseminated eruptive form of Respighi (SDE type) and linear type, each in 3 cases, and disseminated superficial actinic porokeratosis (DSAP) in 5 cases. The Mibelli and linear type of the disease appeared in the early teens but other two showed late onset of second to third decade. All cases of SDE type occurred in males and most cases of Mibelli and DSAP type in females. Five cases of DSAP were apparently associated with sun-exposure. The disease process of case 6 (SDE type) seemed to be related to metastatic adenocarcinoma of the brain. The family occurrence of porokeratosis was found in 2 cases of SDE typc and 3 of five cases of DSAP type. They were transrnitted as an autosomal dominant trait. The linear type oppears to be distinct variety from the early appearance of lesions in linear fashion over the lower extremity. The histological features were essentially the same including the typical cornoid lamella, but the features in types other than classical plaque were often minimal, No effective mode of therapy has been found.
AHP를 이용한 최적의 네트워크 보안 솔루션 선정에 관한 분석 : 공공기관 및 학내 망 IPS 도입을 위한 연구
소상우,김우제 서울産業大學校 2005 논문집 Vol.54 No.1
정보 보안이란 조직 내의 중요한 정보를 스파이, 비양심적인 내부자, 호기심 많은 내부자, 인터넷 상의 악질적인 해커로부터 보호하는 모든 정책 및 시스템을 말한다. 본 논문에서는 정보 보안 솔루션을 설정하는데 있어 AHP 기법을 이용하여 체계적으로 평가할 수 있는 방법을 제시하소 사례로 검증하였다. 정보보안 솔루션을 선정하기 위한 모모형에서는 기술성 요인, 신뢰성 요인, 편리성 요인등이 검토되었으며. 이를 다시 세부항목으로 분류하여 평가하였다. 사례검증에서는 6개사의 정보 보안 솔루션에 대하여 2개사의 정보 솔루션이 우수한 것으로 나타났으며, 이에 대한 민감도분석을 실시하였다.
김우제,안재근,박순달 한국경영과학회 1994 經營 科學 Vol.11 No.3
In this paper we studied an integration scheme of some simplex algorithms and some efficient techniques to get the stable solution in linear programming code. And we developed a linear programming package (LPAK) by introducing this scheme and techniques. In LPAK three different algorithms were integrated, which were two primal simplex algorithms using Two phase method and big-M method respectively, and the dual simplex algorithm. LPAK introduces several heuristic techniques in each step of simplex method in order to enhance the stability and efficiency. They were new heuristic methods in structuring initial basis, choosing entering variable, choosing dropping variable and performing reinversion. The experimental results on the NETLIB problems showed that LPAK provided the stable solutions.