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IS 프로세스의 HI 분해반응공정을 위한 전해 - 전기투석(EED) HI 농축
홍성대,김정근,이상호,최상일,배기광,황갑진,Hong, Seong-Dae,Kim, Jeong-Geun,Lee, Sang-Ho,Choi, Sang-Il,Bae, Ki-Kwang,Hwang, Gab-Jin 한국수소및신에너지학회 2006 한국수소 및 신에너지학회논문집 Vol.17 No.2
An experimental study on Electro-electrodialysis (EED) for IS (Iodine-Sulfur) process which is well known as hydrogen production system was carried out for the HI concentration from HIx (HI: $H_2O$ : $I_2$ = 1 : 5 : 1) solution. The polymer electrolyte membrane and the activated carbon cloth were adopted as a cation exchange membrane and electrode, respectively. In order to evaluate the temperature effect about HI concentration in fixed molar ratio, three case of temperature were selected to $60^{\circ}C$, $90^{\circ}C$ and $120^{\circ}C$. The electro-osmosis coefficient and transport number of proton have been changed from 1.95 to 1.21 (mol/Faraday) and 0.91 to 0.76, respectively as temperature increase from $60^{\circ}C$ to $120^{\circ}C$. It can be realized that the HI mole fraction in final stage of EED experiments already over the quasi-azeotrope composition.
홍성대(Sung-Dae Hong),김두범(Du-Beom Kim) 한국디지털콘텐츠학회 2019 한국디지털콘텐츠학회논문지 Vol.20 No.9
Virtual reality realistic video contents can be experienced in immersive environment without distinction between real and virtual world, and is a technology in which real and virtual information are mixed and expressed, which is a field with great growth potential in the long term future. This study deals with the process of producing multi - viewpoint based virtual reality attraction contents. For the research, the wire control technology system configuration corresponding to the simulation and real time 3D virtual reality image contents pipeline were studied. We created VR bungee attraction contents based on multiple viewpoints by synchronizing the motion settings between the VR images produced by the 3D game engine and the simulations.
동적 실물영상투사 카멜레온(다변) 멀티 서피스 콘텐츠 연구
홍성대(Sung-Dae Hong) 한국디지털콘텐츠학회 2017 한국디지털콘텐츠학회논문지 Vol.18 No.1
The physical display technology is the ultimate display technology that human beings aspire, and the world makes use of laser, plasma and reflector plate. Besides, technology development of binocular stereoscopic display has been actively progressed, but there is a limitation to the intact physical representation such as influence of optical ambient light and brightness. In this paper, the display technology using physical deformation different from the existing optical display is approached as a cultural and emotional perspective. The purpose of this paper is to develop the multivariate display technology that can create 3D realistic stereoscopic images through projecting dynamic images on physically diversified screen by overcoming the limitations of 2D planar digital signage and study how to apply them to video, exhibition and performance.
M.9과 M.26대목이 ‘후지’ 혼합아의 특성에 미치는 영향
홍성대(Sung Dae Hong),전익조(Ik-Jo Chun) 한국원예학회 2008 원예과학기술지 Vol.26 No.2
‘후지’/M.9와 M.26 대목의 휴면기 혼합아를 대상으로 잎눈과 꽃눈으로 발현되는 양상을 알아봄으로써 효율적인 동계전정을 위한 결과지 관리 방안을 수립하고자 혼합아의 외형적 특성을 분류하고, 분포 비율, 수관내 착생위치 및 부위에 따른 개화특성 및 과실품질과의 상관관계를 조사하였다. ‘후지’/M.9와 ‘후지’/M.26의 혼합아 분포에 있어, 인편 털이 전체에 덮혀 있고 인편의 끝이 닫힌,길이7㎜및 횡경 4㎜ 이상의 특정 형태의 혼합아의 비율은 각각 23.6% 및 25.1%였다. Large형(직경 7㎜ 이상 및 횡경 4㎜ 이상)은 ‘후지’/M.9와 ‘후지’/M.26에서 각각 53.6%와 64.3%로 조사되었다. 혼합아의 종경과 횡경 크기에 따른 개화율을 보면, M.9 대목의 경우 종경과 횡경이 클수록 개화율이 높은 반면, M.26 대목의 경우 종경과 횡경이 각각 9~8.1㎜, 4.4~4.0㎜ 범위에서 가장 높게 나타났다. ‘후지’/ M.9 혼합아와 ‘후지’/M.26의 혼합아 종경은 과실의 크기와 정의 상관관계를 나타내었으나, 다른 과실의 품질과는 유의성이 없었다. This study was carried out to establish the efficient winter pruning practice by the classification of morphological various mixed buds and the determination of their effects on the blooming and fruit characteristics of ‘Fuji’ apple (Malus domestica) trees grafted on M.9 and M.26 rootstocks. In the ‘Fuji’ apple trees on M.9 and M.26 rootstock, 23.6% and 25.1% of mixed buds were classified a certain type, which is fully covered with pubescence, and the size is bigger than 7 ㎜ length and 4 ㎜ width with closed scale. Large types of mixed bud, longer than 7 ㎜ length and 4 ㎜ width, were 53.6% and 64.3% in ‘Fuji’/M.9 and ‘Fuji’/M.26, respectively. In the relationships between flowering percentage and mixed bud size, ‘Fuji’/M.9 showed that the bigger mixed buds had the higher flowering rates, but ‘Fuji’/M.26 showed the highest flowering rates in 9~8.1 ㎜ and 4.4~4.0 ㎜ of length and width sizes of mixed buds, respectively. There were no correlations between mixed bud characteristics and fruit qualities, except mixed bud sizes. The longer lengths of mixed buds produced the heavier apple fruit in the trees of both rootstocks.
홍성대(Sung-Dae Hong) 한국정보기술학회 2012 한국정보기술학회지 Vol.10 No.1
정보통신기술 발달로 인하여 스마트 기기들이 넘쳐나고 첨단 기기의 활용이 증가하고 있다. 국내 스마트폰 사용자수 2000만명 시대를 이미 넘어섰다. 출·퇴근길 대중교통 안을 살펴보면 거북이 목을 한 자세로 작은 디스플레이에 시선을 고정하고 뉴스, 동영상, 게임 등을 즐기는 사람들이 많다. 그러나 언제 어디서나 스마트한기기의 편리함의 이면에 부작용이 나타나고 있다. 스마트 기기의 혁명이 가져다주는 편리함 뒤의 디지털치매, 건강, 사생활 노출, 개인정보노출, 스마트 기기의 폐해와 방안에 대하여 살펴본다.
홍성대(Sung-Dae Hong) 한국디지털콘텐츠학회 2017 한국디지털콘텐츠학회논문지 Vol.18 No.3
Despite growing participation of many researchers, the cases of applying the transformative emotional display technology using physical materials and media are still in its early stages and the concept and structure are not properly established in Korea. The emerging global trend of physical display shows a possibility of new digital signage using emotional flip display. In this context, this study attempts to develop related element technology necessary in physical flip display and electromagnetic rotation module along with the integration platform of aesthetic arbitrarily-shaped display. The found results will be applied in researching the contents for the main subject which will be exhibited at the EXPO 2017 in Astana. It is to build up the foundation pioneering the localization of associated industry by means of diverse technological breakthroughs including flip-display technology, electromagnetic module technology, real-time video inter-working technology, high-speed rotation module technology, and transformative 3D frame technology.
홍성대(Sung-Dae Hong) 한국디지털콘텐츠학회 2018 한국디지털콘텐츠학회논문지 Vol.19 No.10
The exhibition display industry has been actively studying emotional and aesthetic aspects of display in domestic and abroad through physical transformations beyond the flat display. In this paper, we focus on the development of differentiated motor-based physical void displays from cultural emotional point of view, which can be applied to diverse art and technology exhibition, outdoor advertising, advanced performances. It will be able to establish a foundation to preoccupy localization through various technologies such as versatile block module that can apply rotational motion and linear motion in detail, real-time image interlocking technology, and high-speed motion processing technology. This study will provide a basis for differentiation in the advertising market.