http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
효율적인 음향 윈도우 설계를 위한 2차원 유한요소법 기반의 과도 해석
김유창(Kim, Y.C.),김석구(Kim, S.K.),윤석왕(Yoon, S.W.),이영관(Lee, Y.),조미숙(Cho, M.S.),신구균(Shin, Ku-Kyun),구자춘(Koo, J.C.) 한국소음진동공학회 2009 한국소음진동공학회 논문집 Vol.19 No.7
The efficiency of active sonar that is used underwater observation equipment is important for obtain the information of topography and trace for the objects. Sound wave transmitted from sonar are distorted by acoustic window which is to protect sonar. Making various sonar dome is impossible for experiment, because consumed unnecessary time and expense. So, the purpose of this study is to simulate and analyze the acoustic window propagated sound wave from sonar for designing model reduced insertion loss. Simulation is performed by transient analysis and fluid-structure interaction analysis. As a result, this study will give a opportunity for efficient design of sonar dome without high cost and time consumption.
김진천(J . Cheon Kim),김병식(B . Sik Kim),민병철(B . Cheol Min),정영화(Y . Wha Jeong),배한익(H . Ik Bae),이문규(M . Kyoo Lee),지현숙(H . Sook Ji),김석구(S . Ku Kim),박건춘(G . Chun Park) 대한소화기학회 1990 대한소화기학회지 Vol.22 No.3
A 21 year-old male patient, who had experienced several episodes of gastric vaix bleeding with agnogenic myeloid metaplasia, visited Asan Medical Center. For there was massive hematemesis despite of medical treatment, we performed the Sugiura operation of modification, which consisted of splenectomy, esophagogastric devascularization, esophageal transection and anastomosis, pyloroplasty with good result.