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- 저자 : 백열선 ; 오중민 (검색결과 3 건)
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전화/광고사서함 서비스설비 및 개인번호서비스설비에 의해 새로운 통신설비 기능에 관한 연구
오중민 ; 백열선 김천대학교 1994 김천대학교 논문집 Vol.15 No.-
We can know to play an important role for telecommunication system in information so-ciety in the future and also in management/maintenance of the most of facility. In this paper, we propose new service system by co-working of telephone/announcement mail box service system and personal number service system in intelligent network system and by adding intelligent service function to current telecommunication system. This propo-sed service system is applied usefully to maintenance and management facility of electronic, mechanical, fire system and so on. We develop new service system and define description service system and analyze service processing flow by simulating service function.
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경계요소법을 이용한 J-적분의 수행을 통한 응력확대계수 결정에 관한 연구
백열선 ; 오중민 김천대학교 1994 김천대학교 논문집 Vol.15 No.-
The boundary element method is applied to perform a stresses, displacements, strain energy density, etc at boundary and internal points and the stress intensity factors are compu-ted through the integral. The J-integral is the most efficient thechnique used in the dual boundary element method to solve general crack problems. This method is implemented automatically by considering a small circular contour path around each crack tip. The integration along this path relies upon the values of the elastic field at a set of internal points. Since the exact variation of the interior elastic field is built into the fundamental solution of the boundary element method, the combination of these techniques is now widely regrded as the most accurate numerical tool for the analysis of crack problems in linear elastic fracture mechanics. In this study, The boundary element method is used to determine the Stress Intensity Factors of cracks emanating from a circular hole at finite width plate subject to unixial tension. The results are compared with kitagawa &Yuuki and J.C. Newman results for cracks emanating from a circular hole in the finite plate. The results of S. L F (K) and Correction Factor F, arc Summarized as ſallow. 1) The numerical solution provides accurate results for the stress intensity factor as well as exact solution. 2) The results obtained from the above element with only a few boundary clements are quite accurate. Therefore, it seems to be demonstrated that stress intensity factors may be determined efficiently for nonlinear cracks in complicated structures. 3) The Correction Factor F is influenced by the ratio "2R/W"
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공중전화망설비를 이용한 지능망 서비스 데이타 갱신 방법에 관한 연구
오중민 ; 백열선 김천대학교 1995 김천대학교 논문집 Vol.16 No.-
We can know to play an important role for telecommunication sys- tem in information society in the future and also in management/maintenance of the most of facility. In this paper, we propose new updating methdology using tele-phone system by adding intelligent service control function to cur-rent telecommunication system in intelligent network system. This proposed service data control mechanism is applied usefully to maintenance and management facility of electronic, mechanical, fire protection system and so on. We develop new service control sysem and define prcessing flow of service control data and analyze service control processing flow by simulating service control function
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