• 대한치과보철학회:학술대회논문집
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• 2002.11a
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• pp.89-89
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• 2002

• 대한치주과학회:학술대회논문집
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• 2002.11a
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• pp.41-42
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• 2002

• Proceedings of the Optical Society of Korea Conference
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• 2004.02a
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• pp.364-365
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• 2004

• The Bulletin of The Korean Astronomical Society
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• v.6
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• pp.9.1-9.1
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• 1981

• Proceedings of the Korean Society of Developmental Biology Conference
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• 2002.02a
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• pp.46-46
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• 2002

• Proceedings of the Korea Water Resources Association Conference
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• 2003.05b
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• pp.1059-1062
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• 2003

• KSCI Review
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• v.2 no.1
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• pp.13-34
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• 1995

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2002.05b
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• pp.271-272
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• 2002

하수 또는 폐수의 재이용시 사용되는 역삼투막설비의 전처리공정으로 사용되는 연속식정밀여과기의 전단에 PAC와 같은 응집제를 10ppm 투입하고 역세주기를 20분으로 하여 막오염을 최소화함으로써 재이용 시스템의 안정적인 운전이 가능하였다.

• Journal of the Earthquake Engineering Society of Korea
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• v.9 no.1 s.41
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• pp.9-16
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• 2005

The purpose of this paper is to present a design procedure of a friction damper for controlling elastic and inelastic responses of building structures under earthquake excitation. The equivalent damping and period increased by the friction damper are estimated using ATC-40 and ATC-55 procedures which provide equivalent linear system for bilinear one, and then a design formula to achieve target performance response level by the friction damper is presented. It is identified that there exists error between the responses obtained by this formula and by performing nonlinear analysis and the features of the error vary according to the hardening ratio, yield strength ratio, and structural period. Equations for compensating the error are proposed based on the least square method, and the results from numerical analysis indicate that the error is significantly reduced. The proposed formula can be used without much error for designing a friction damper for retrofitting a structure showing elastic or inelastic behavior.

• Journal of the Korea institute for structural maintenance and inspection
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• v.25 no.3
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• pp.1-12
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• 2021

The purpose of this paper is to study of the applicability of the current response spectrum analysis method by grasping the dynamic behavior characteristics of soil-pile and pier-crane in pile mooring facilities. To this end, time history analysis was performed using Abaqus as a design variable for various soil types, pile-ground modeling, and structure specific cycles. The results were compared with the analysis results of the response spectrum. Subsequently, a problem has been found in the current response spectrum analysis and the improvements are needed when considering the dynamic behavior of the ground-pile and pier-crane of the pile mooring facility.