• Journal of the KSME
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• v.25 no.3
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• pp.216-224
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• 1985

최근에는 온라인 시스템(on-line system)에 의하여 난류의 신호를 직접 신호분석기에서 받아 분석하여 컴퓨터에 의해 데이터를 처리하고, 풀롯터(plotter)에 의해 도시함으로서 유동의 특성을 통계학적인 방법으로 해석해 나가고 있다. 본 해설에서는 온라인시스템에 의한 난류의 통계 학적 측정방법과 기본적인 이론 및 측정도시에 예를 제시하고자 한다.

• Proceedings of the Korean Geotechical Society Conference
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• 1996.10a
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• pp.71-80
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• 1996

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 1991.07a
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• pp.89-92
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• 1991

선형파 이론 자체로서는 쇄파대내에서의 파고를 직접 계산할 수 없으므로 쇄파가 발생하기 전까지만 계산할 수 있다. 그리고 쇄파대내에서의 파고는 수심에 대하여 일정한 비율로 감소시켜 해석해 왔다. 그러나 쇄파가 발생한 후의 파고는 선형적으로 감소하지 않고 해저경사에 따라서 그 감소경향이 다르게 나타남을 여러문헌에서 알 수 있다.(중략)

• The Korean Society of Law and Medicine
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• v.21 no.3
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• pp.3-33
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• 2020

Telemedicine can be defined as "medical activities performed remotely by medical personnel using information and communication technology." So far, many scholars in Korea have understood that only telemedicine between medical personnel is allowed and telemedicine between medical personnel and patients is prohibited based on Article 34 of Medical Service Act. However, Article 34 is only a restriction on the performing place of medical profession, not a prohibition on telemedicine itself. And, there are no regulations prohibiting telemedicine under the korean medical law. So, it is difficult to say that telemedicine is generally prohibited under the korean medical law, apart from the health insurance medical treatment benefit standards. However, there is controversy in interpretation regarding the meaning of "direct diagnosis" in Articles 17 and 17-2 of Medical Service Act. The Constitutional Court of Korea interpreted this as "face-to-face diagnosis", while the Supreme Court of Korea interpreted it as "self diagnosis". In light of the dictionary meaning of 'direct' and the interpretation of related medical law regulations, I think the Supreme Court's interpretation is valid. Although "direct diagnosis" does not mean "face-to-face diagnosis", the concept of "diagnosis" implies "principle of face-to-face diagnosis". In addition, "non-face-to-face diagnosis" are only allowed to supplement "face-to-face diagnosis", so the problems caused by "non-face-to-face diagnosis" can be fully overcome. In the end, the limit of telemedicine is how faithful the diagnosis was.

• Journal of the Earthquake Engineering Society of Korea
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• v.5 no.5
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• pp.1-11
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• 2001

The purpose of this study is to develop the main program and pre/post processor for the geometric and plastic non-linear analysis of steel jacket structures subjected to wave and earthquake loadings. In this paper, steel jackets are modelled using geometric non-linear space frames and wave loadings re evaluated based on Morrison equation using the linear Airy theory and the fifth Stokes theory. Random wave is generated using JONSWAP spectrum. For earthquake analysis, dynamic analysis is performed using artificial earthquake time history. Also the plastic hinge method is presented for limit analysis of steel jacket. In the companion paper, the pre/post processor is developed and the numerical examples are presented for linear and non-linear dynamic analysis of steel jackets.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1992.10a
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• pp.415-422
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• 1992

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2007.11a
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• pp.227-228
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• 2007

• Journal of Korean Society of Steel Construction
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• v.18 no.6
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• pp.707-716
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• 2006

The optimization of the direct design system of semi-rigid steel frames using advanced analysis and genetic algorithm was presented. Advanced analysis can predict the combined nonlinear effects of connection, geometry, and material on the behavior and strength of semi-rigid frames. Geometric nonlinearity was determined using stability functions. On the other hand, material nonlinearity was determined using the Column Research Council (CRC) tangent modulus and parabolic function. The Kishi-Chen power model was used to describe the nonlinear behavior of semi-rigid connections. The genetic algorithm was used as the optimization technique. The objective function was assumed as the weight of the steel frame, with the constraint functions accounting for load-carrying capacities, deflections, inter-story drifts and ductility requirement. Member sizes determined by the proposed method were compared with those derived using the conventional method.

• Journal of Korean Society of Steel Construction
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• v.14 no.2
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• pp.339-348
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• 2002

The study developed an automatic design method of steel frames which uses nonlinear analysis. The geometric nonlinearity was considered using stability functions. Likewise, the transverse shear deformation effect in a beam-column was explained. A direct search method was used as an automatic design technique. The unit value of each part was evaluated using LRFD interaction equation. The member with the largest unit value was replaced one by one with an adjacent larger member selected from the database. The weight of the steel frame was considered as an objective function. On the other hand, load-carrying capacities, deflections, inter-story drifts, and ductility requirement were used as constraint functions. Case studies of a two-dimensional and a three-dimensional two-story frames were presented.

• Journal of the Earthquake Engineering Society of Korea
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• v.7 no.4
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• pp.23-30
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• 2003

The result of recent seismic hazard analysis indicates that the ground motion response spectra for Korean nuclear power plant site have relatively large frequency acceleration contents. In the ordinary seismic fragility analysis of nuclear power plant structures and equipments, the safety margin of design ground response spectrum is directly used as a response spectrum shape factor. The effects of input response spectrum shape on the floor response spectrum were investigated by performing the direct generation of floor response spectrum from the ground response spectrum. The safety margin included in the design ground response spectrum should be considered as a floor response spectrum shape factor for the seismic fragility analysis of the equipments located in a building.