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유기중,유장걸 제주대학교 1985 논문집 Vol.20 No.-
Protoplast of carrot were isolated and purified from leaves, roots, and callus of root cambium cultured on MS medium. in order to investigate some basic characteristics of the carrot protoplasts. 1. During enzyme treatment. non-shaking brought about higher yield of protoplasts than shaking by which many protoplasts were destroyed. 2. The sizes of the isolated protoplasts were variable, root protoplasts were largest and leaf protoplasts smallest 3. No color particle was observed in callus protoplasts. but green color in leaf and orange in root. 4. Protoplast densities of leaf and callus were slightly increased after 2-day incubation with the treatment of kinetin and BA. while decreased with the treatmnent of GA. NAA and IAA. Cell wall formation was obserbed from each treatment of growth regulator after 2-day incubation. 5. The protoplast fusions of leaf-root. and leaf-callus were easily recognized in virtue of their typical color and size. The degree of protoplast fusion obtained by PEG eluting method was 1-5%. higher than by the centrifugal method.
MZ 세대 접점 확보를 위한 금융권 메타버스 플랫폼 활용 방향 연구
유기중,박기범,조성원,김동호 한국인터넷방송통신학회 2023 한국인터넷방송통신학회 논문지 Vol.23 No.3
COVID-19는 사회 전 분야 및 경제, 정치에 영향을 미쳤을 뿐만 아니라 산업계에도 막대한 영향을 미쳤다. 감염병 예방 차원에서의 비대면 교류 방식은 필수적이었으며, 이를 경험한 세대는 언제 어디서나 빠르게 접근할 수 있는플랫폼의 중요성을 인식하고 이를 잘 수용할 수 있는 메타버스(Metaverse)에 관심이 쏠리고 있다. 금융업계마다 차별화된 메타버스 플랫폼 전략을 이용하고 새로운 고객 응대 및 수익 창출에 집중하고 있으며, 내외부의 의사소통 창구로도활용되고 있다. 본 논문은 금융권 메타버스의 이론적 배경과 국내외 사례를 분석하고, MZ 세대 접점 확보를 위한 금융권메타버스 플랫폼 활용 방향에 관하여 연구하고 기술해 보고자 한다.
김건중,김성환,유기호 한국항공우주학회 2014 한국항공우주학회 학술발표회 논문집 Vol.2014 No.11
본 논문에서는 바퀴와 지형 상관관계 모델 및 분석에 기초하여 로버 휠의 실제 주행에 영향을 미치는 요인을 검토하였다. 실제 환경에서 주행성능을 평가하기 위해 휠 테스트베드를 설계, 제작하였으며, 바퀴 형상에 따른 슬립 율, 구동면의 침하 및 마찰 에너지를 검토하는 기초실험을 수행하였다. In this paper, the consideration factors that affect actual driving of rover wheel was examined based on the wheel-terrain model. For the evaluation of driving performance in real environment, the test bed of wheel was designed and assembled. Using the test bed, the preliminary experiment concerning the slip ratio, sinkage, and friction energy according to the shape of wheel was carried out.
김건중,김성환,유기호 한국항공우주학회 2015 한국항공우주학회 학술발표회 논문집 Vol.2015 No.11
본 논문에서는 지형역학에 기초하여 로버 바퀴의 폭 변화가 슬립 침하에 미치는 요인을 검토하였다. 슬립 율 조건에 따른 슬립 침하를 평가하기 위해 휠 테스트베드를 구성하였고, 바퀴 폭 및 슬립 율에 따른 구동면의 슬립 침하를 측정하는 실험을 수행하고 슬립침하를 평가하였다. In this paper, the consideration factors that affect to slip sinkage of rover wheel with different width were examined based on terramechanics. For the evaluation of slip sinkage according to slip ratio condition, the wheel test bed of planetary exploration rover was assembled. Using the test bed, experimental approach to slip sinkage according to the slip ratio and the width of wheel was carried out and evaluated.
김건중(Kun-Jung Kim),김성환(Seong-Hwan Kim),유기호(Kee-Ho Yu) 제어로봇시스템학회 2015 제어·로봇·시스템학회 논문지 Vol.21 No.4
In this paper, the consideration factors that affect the actual driving of a rover wheel was examined based on the wheel-terrain model. For the evaluation of driving performance in a real environment, the test bed of the rover wheel consists of the driving part of the wheel and sensing part of the various parameters was designed and assembled. Using the test bed, the preliminary driving experiment concerning the slip ratio, sinkage, and friction force according to the rotational velocity and the shape of the wheel were carried out and evaluated. The wheel test bed and the experiment results are expected to contribute to finding the optimal result in the designing of the wheel shape and the planning of the driving conditions through further study.