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프로그래밍 방식의 객체 기반 영상 콘텐츠 제작 기술 동향
이재영,김태원,추현곤,이한규,석왕헌,강정원,허남호,김흥묵,Lee, J.Y.,Kim, T.O.,Choo, H.G.,Lee, H.K.,Seok, W.H.,Kang, J.W.,Hur, N.H.,Kim, H.M. 한국전자통신연구원 2022 전자통신동향분석 Vol.37 No.4
With the rapid growth in media service platforms providing broadcast programs or content services, content production has become more important and competitive. As a strategy to meet the diverse needs of global consumers for a variety of content and to retain them as long-term repeat customers, global over-the-top service providers are increasing not only the number of content productions but also their production efficiency. Moreover, a considerable amount of scene composition in the flow of content production work appears to be combined with rendering technology from a game engine and converted to object-based computer programming, thereby enhancing the creativity, diversity, quality, and efficiency of content production. This study examines the latest technology trends in content production such as virtual studio technology, which has emerged as the center of content production, the use cases in various fields of artificial intelligence, and the metadata standards for content search or scene composition. This study also examines the possibility of using object-based computer programming as one of the future candidate technologies for content production.
Cure Kinetcs of DGEBA/MDA/GN/HQ System by DSC Analysis
이재영,심미자,김상욱,Lee, J.Y.,Shim, M.J.,Kim, S.W. The Korean Society of Industrial and Engineering C 1994 공업화학 Vol.5 No.5
촉매로 작용하는 HQ의 첨가에 따른 DGEBA/MDA/GN계의 경화반응 속도론 변화를 Kissinger equation과 Fractional life법에 의해 연구하였다. HQ가 첨가된 계가 첨가되지 않은 계보다 활성화 에너지는 약간 감소하였고, pre-exponential factor 값은 30% 정도 증가하였다. 그리고, HQ(1.25phr)가 첨가됨으로 인해 반응속도는 1.8배 정도 증가하였다. Cure kinetics of DGEBA(diglycidyl ether of bisphenol A)/MDA(4,4'-methylene dianiline)/GN(glutaronitrile) system with and without HQ(hydroquinone) as a catalyst was studied by Kissinger equation and Fractional life method. The activation energy of the system with HQ was somewhat lower and the pre-exponential factor of that was higher by about 30% than those of the system without HQ. As 1.25phr of HQ was added, reaction rates increased about 1.8 times.
DSC 분석에 의한 DGEBA / MDA / GN / HQ 계의 경화반응 속도론
이재영,심미자,김상옥 ( J . Y . Lee,M . J . Shim,S . W . Kim ) 한국공업화학회 1994 공업화학 Vol.5 No.5
촉매로 작용하는 HQ의 첨가에 따른 DGEBA/MDA/GN계의 경화반응 속도론 변화를 Kissinger equation과 Fractional life법에 의해 연구하였다. HQ가 첨가된 계가 첨가되지 않은 계보다 활성화 에너지는 약간 감소하였고, pre-exponential factor 값은 30% 정도 증가하였다. 그리고, HQ(1.25phr)가 첨가됨으로 인해 반응속도는 1.8배 정도 증가하였다. Cure kinetics of DGEBA(diglycidyl ether of bisphenol A)/MDA(4,4`-methylene dianiline)/GN(glutaronitrile) system with and without HQ(hydroquinone) as a catalyst was studied by Kissinger equation and Fractional life method. The activation energy of the system with HQ was somewhat lower and the pre-exponential factor of that was higher by about 30% than those of the system without HQ. As 1.25phr of HQ was added, reaction rates increased about 1.8 times.
탄소섬유 / 에폭시 복합재료의 파괴에너지에 미치는 PH , Strain Rate 및 섬유 부피분율의 영향
이재영,최형기,심미자,김상욱 ( J . Y . Lee,H . K . Choi,M . J . Shim,S . W . Kim ) 한국공업화학회 1995 공업화학 Vol.6 No.3
탄소섬유/에폭시수지 복합재료의 파괴에너지에 미치는 pH, strain rate 및 섬유부피분율의 영향을 연구하였다. pH 2-12 범위에서 strain rate를 2.37×10^(-3) sec^(-1)부터 23.67×10^(-3) sec^(-1)까지 변화를 시켰으며, 섬유부피분율은 0∼0.09이었다. Three point bending 시험에 의해 시편을 파단시킨 후 섬유의 debond된 길이와 pull-out된 길이를 ZPM 법에 의해 구하였다. 본 계의 파괴에너지는 주로 pull-out energy가 가장 크게 나타나며, pH 7인 경우가 pH 2, 12인 경우보다 더 큰 값을 나타내었다. 그리고, strain rate 및 섬유부피분율이 증가함에 따라 파괴에너지가 증가하였다. The effects of pH, strain rate and fiber volume fraction on the fracture energy of carbon fiber/epoxy composites were investigated. The range of strain rate was from 2.37×10^(-3) sec^(-1) to 23.67×10^(-3) sec^(-1), that of pH was 2 to 12 and fiber volume fraction was 0 to 0.09. Fracture of the specimen was carried out by three point bending test and fiber debonded length and pull-out length were measured by Zeiss projection microscope. Pull-out energy gave a major contribution to the fracture energy. The fracture energy at pH 7 was larger than those at pH 2 and pH 12. Fracture energy increased with the increase of strain rate and fiber volume fraction.