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식물의 성장과 열화상카메라로 측정된 열적 특성과의 연관성 분석
박상미(Park Sang-Mi),남다현(Nam Da-Hyun),김지형(Kim Ji-Hyung),조건영(Jo Geon-Young),김하양(Kim Ha-Yang),김정배(Kim Jeongbae) 한국태양에너지학회 2016 한국태양에너지학회 논문집 Vol.36 No.2
This study was experimentally performed to analyze the growth characteristics of a plant(wax tree or privet) using the surface temperature measured from thermal images captured using a thermal camera with water and cider. To do that, this study measured every each 12 hours the surface temperature and the stem temperature of leaves attached to the plant sample until the plants wilt on summer season in the laboratory room. From the experimental results, this study revealed that the temperature of front and back of the leaves is a little different due to the pore. The mean surface temperature of a leaf in cider is 0.52℃ higher than that of a leaf in water. The phenomena that the leaves of plants fall could be also demonstrated using the surface temperature. Before a leaf is falling from the tree, the temperature of the stem is lowered about 2℃ than those of other parts in a leaf. This result can be validated from previous result performed in University of Wisconsin.
운전 중 요추와 경추 부하 감소 및 척추질환 예방을 위한 인체공학 운전석 의자
이종록(JongRok Lee),김지호(Jiho Kim),남다현(Da-hyun Nam),박찬은(Chaneun Park),공유진(Yujin gong),박기원(Kiwon Park) 대한전자공학회 2020 대한전자공학회 학술대회 Vol.2020 No.8
This paper proposes the biomechanical driver"s seat that can reduce the pressure on cervical and lumbar, and prevent spinal disease. Lumbar spine and cervical vertebrae are important body parts that protect the central nervous system of the human body and support body loads. The proposed seat is developed based on various angles of chair, such as back―thigh angle (BTA), back rest inclination (BR), seat angle (SA), neck angle (NA), and prominence of lumbar support that affect the pressure on cervical and lumbar. To find optimal angles and prominence, all variables were considered simultaneously and the obtained comfortably optimal each angle of chair and prominence are applied to driver"s sheet.