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조창열 울산대학교 1996 공학연구논문집 Vol.27 No.2
오일러 방정식에 근거한 천음속 영역에서 익형의 형상설계를 위한 수치최적화 과정을 정립하였다. 여기에는 설계진행에 따라 반복적으로 설계공간을 국부적으로 제한하고 이 공간 내에서 목적함수와 제약조건을 근사하여 최적화를 수행하는 순차근사최적화기법과, 목적함수와 제약조건의 근사를 위해 좌표변형에 근거한 중간매개변수의 민감도를 이용하는 방법, 그리고 반복적 오일러 유동해석의 효율화를 위하여 표면 경계조건의 개조 등을 채택하여 전체 계산시간을 실제 설계에도 충분히 적용 가능할 만큼 감소시켰다. 근사최적화의 진행 시에는 이동한계를 설계변수 절대값으로 지정 적용하는 방법이 오일러 유동방정식을 이용한 근사 설계최적화 문제에서 가장 효율적인 것으로 판명되었다. Numerical optimization procedures were tested for the design of airfoil shapes in transonic flow based on the Euler equations. Specific techniques such as sequential approximation optimization, sensitivity calculations of the intermediate parameter using coordinate straining and modification of Euler surface boundary conditions were implemented in the procedures to reduce computational burden. Optimization with large move limits specified in absolute values of the design variables was found to be deficient and robust in solving the approximate optimization problem based on the Euler equations.
조창열 한국엔터테인먼트산업학회 2022 한국엔터테인먼트산업학회논문지 Vol.16 No.3
Jean-Pierre Dardenne and Luc Dardenne won two Palme d'Ors. They became the fourth and the fifth member of two-time winners of the most prestigious film award among Francis Ford Coppola, Imamura Shohei, Emir Kusturica. Nevertheless, there are not many studies about their works focusing on acting. They casted Emilie Dequenne for <Rosetta> who never acted before but won the best actress award from Cannes Film Festival. Dardenne brother's acting method mainly focuses on the physical aspects of actors. During long rehearsals and repetitive shootings, They want actors as a revealer, not a constructor. Their aim is to strip off all the intention and be natural - no acting, which is an alternative way of traditional ‘method acting’ that focuses on the inner truth of the actor. For the best result of ‘method acting’, an actor must dive into himself and have to become a role. It heavily depends on the actor's mental state. Hence, not possible to maintain consistency all the time. Furthermore, It causes problems with actor’s mental health and the directorial process as Hitchcock mentioned. This article studies Dardenne brother's acting method as the domain of the physical acting, such as Brecht, Michael Chekhov, and Adler for the possibility of achieving the best acting for a film.