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MEROMORPHIC FUNCTIONS SHARING A NONZERO POLYNOMIAL CM
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Bortezomib과 JSI-124 병합 처리된 종양항원 부가 수지상세포의 항종양 효과 = Combination of bortezomib and JSI-124 enhanced antitumor activity of cytotoxic T lymphocytes by necrotic tumor cells loaded dendritic cells
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- 저자 : 정태화(Taehwa Jung) (검색결과 8 건)
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정태화,손상영,Jung, Taehwa,Son, Sangyoung 한국수자원학회 2023 한국수자원학회논문집 Vol.56 No.5
In this study, the validity of the Korean expression for tsunami will be examined and a method to use it correctly will be proposed. First, we will review the scientific definition of the tsunami and the origin of the tsunami expressed in various languages. Based on this review, after reviewing whether the Korean expression 'Jijinhaeil', which is currently used representatively in Korea, a reasonable method that can be used appropriately will be proposed. In conclusion, it is suggested that the Korean pronunciation of tsunami should be used in a uniform manner as in the case of English and other languages.
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축대칭 함몰지형 위를 통과하는 파에 대한 확장형 완경사 방정식의 해석해
정태화(Taehwa Jung),이승오(Seung-Oh Lee),김수영(Sooyoung Kim),류용욱(Yong-Uk Ryu) 한국연안방재학회 2020 한국연안방재학회지 Vol.7 No.2
Many analytical solutions to the extended mild slope equation were presented by adopting Hunt’s approximated solution of linear dispersion in order to investigate how to be affected water wave when wave propagating on a shallow water depth suddenly encounter a much deeper water depth. In this study, an analytical solution to the extended mild slope equation is derived for waves propagating over an axi-symmetric pit in which the water depth varies in proportion to a power of radial distance from the center of it. First, the governing equation is transformed into ordinary differential equation by using the method of separation of variables, and the coefficients expressed in terms of phase velocity and group velocity are transformed into explicit forms by using Hunt’s (1979) approximate solution for wave dispersion. The functions related to higher order terms such as bottom curvature and bottom slope-squared are expressed as power series. Finally, by using the Frobenius series, the analytical solution to the extended mild slope equation is derived. The validity of the analytical solution is demonstrated by comparison with the numerical solution computed by the finite element method. The present solution shows more accurate result than the solution of the mild slope equation while less accurate in intermediate depth region due to the feature of Hunt’s solution.
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시간차를 지닌 단층파괴 활동이 동해안 처오름 높이에 미치는 영향
정태화(Taehwa Jung),손상영(Sangyoung Son) 한국해안해양공학회 2020 한국해안해양공학회 논문집 Vol.32 No.4
시간차를 지닌 단층파괴 활동은 지진해일의 초기파형 생성에 영향을 끼치며, 이로 인해 해안에서의 처오름 높이에도 변화를 준다. 이러한 단층파괴 활동이 처오름 높이에 미치는 영향을 검토하기 위하여 일본 서해역에 다수의 가상 단층파괴를 가정하여 수치모의를 수행하였다. 소단층들이 해안선에 평행하게 위치한 경우에는 시간차를 지닌 단층파괴가 처오름 높이에 미치는 영향은 미미했으나, 해안선에 수직으로 위치해 있는 경우에는 초기파형의 중첩효과가 두드러지게 발생하여 해안선에서 처오름 높이가 증가하였다. The fault failure process with time difference affects the initial generation of waveforms of tsunamis, which consequently changes the runup height on the coast. To examine the effect of time difference in fault failure process on the runup height, a numerical simulation was conducted assuming a number of virtual subsea earthquakes in the west coast of Japan. Results revealed that maximum runup heights along the east coast of Korea were minimal when the subfaults were aligned parallel with the shoreline. Meanwhile, if they were located perpendicular to the shoreline, the superposition effect of the initial surface by each subfault was noticeable, resulting in an increase in maximum runup height on the coast.
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정태화(Taehwa Jung),황순철(Sooncheol Hwang),손상영(Sangyoung Son) 한국해안해양공학회 2021 한국해안해양공학회 논문집 Vol.33 No.4
단층파괴에 의한 해저지형변화는 공간적으로 시간차를 가진다. 특정 지점에서 파괴가 발생하면 이웃지점으로 단층파괴가 전파하면서 시간차에 따른 단층파괴가 발생하며, 단층파괴시 연직방향으로 상승하면서 지진해일을 야기한다. 해저 지형의 상승속도는 지진해일 초기파형에 영향을 주며 결과적으로 지진해일의 도달시간 및 크기에 영향을 준다. 본 연구에서는 단층파괴에 의한 해저 지형의 수평적 및 수직적 변화를 능동적 및 동적으로 고려하여 지진해일의 생성 및 전파를 모의할 수 있는 수치모형을 개발하였다. 모델의 검증을 위하여 2011년 동일본대지진에 대해 적용하였으며 기존의 수동적 및 정적 모형에 비해 정확성이 개선되는 것을 확인하였다. Seabed deformation due to the fault failure have both a spatial variation and temporal history. When the faulting process initiates at a certain point beneath seabed, the failure spreads out to neighboring points, resulting in temporal changes of deformation. In particular, such a process induces tsunami waves from the vertical motion of seabed. The uprising speed of seabed affects the formation of initial surface profile, eventually altering the arrival time and runup of tsunamis at the coast. In this work, we developed a numerical model that can simulate the generation and propagation of tsunami waves by considering the horizontal and vertical changes of seabed in an active and dynamic manner. For the verification of the model, it was applied to the 2011 Tohoku-oki earthquake in Japan and the results confirmed that the accuracy was improved compared to the existing passive and static model.
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투수성 모래 해변에서의 쇄파의 쳐오름과 쳐내림 수치 모형 연구
김열우(Yeulwoo Kim),정태화(Taehwa Jung) 한국연안방재학회 2020 한국연안방재학회지 Vol.7 No.4
We present a new methodology that is able to resolve wavefield and bottom boundary layer processes throughout the water column over a permeable beach. An Eulerian two-phase model for sediment phase, SedFoam, and a surface wave solver, InterFoam/olaFlow, are integrated in the OpenFOAM framework. The new model, called SedWaveFoam, is validated with two laboratory datasets for swash driven by a plunging solitary wave over a permeable and immobile sandy beach. Results demonstrate that surface elevation and depth-averaged velocity are well predicted during uprush. To better match the model results with the measured data during backwash, sand beds with different porosities are tested. It is suggested that significant vertical pore pressure gradient can be induced due to infiltration and exfiltration processes that affects stabilizing force of sand particles.
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김종우,정태화,용병주 국립중앙박물관 2007 박물관보존과학 Vol.8 No.-
국립경주박물관 소장의 용장계 석조약사불좌상은 1974년 불두와 불신의 접합 보존처리를 실시하여 옥외전시장에 전시 중에 있다. 그러나 표면의 미생물 서식과 무기질 오염 및 과거 복원부분의 탈락 등이 진행되어 유물의 지속적인 전시와 안전관리를 위해 보존처리를 실시하였다. 처리과정은 감마선(r-ray)촬영을 통해 내부 접합 및 구조의 확인, 이미 사용하였던 복원재료의 제거, 균열부분 강화, 암석표면의 세척작업과 접합·복원작업, 표면 색맞춤 순으로 처리를 완료하였다. There is a Seated Stone Bhaishajyaguru-Vaidurya Buddha (Medicine Buddha) which was moved from Yongjang-gye in the garden of Gyeongju National Museum. The head was cemented on the body of the statue in 1974 before its display. Recently, we have done another conservation work on the statue because microbes and the other contaminants have built up on the surface and the restored part of the statue has loosened again. By taking r-ray pictures, we have checked the structure of the statue, especially the connected part and removed old materials used for the previous restoration. We reinforced the cracked parts, cleaned the surface, and then restored the statue. We finished the conservation process by adjusting the color.
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