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이병홍 ( Byunghong Lee ),이주은 ( Jooeun Lee ) 한국패션비즈니스학회 2015 패션 비즈니스 Vol.19 No.5
By the influence of ageing population, the well-being trend, and the increase of interest in health, people seems to be enjoying sports and outdoor life more. Followed by the change of consumers`` life style, the interest in smart clothing grafting scientific technology has increased, and research on this subject is necessary. This study is to develop improved design of band type heating vests by grasping the weak point of currently sold heating vest designed by the manufacturer. Through this process, satisfaction of the consumer and the manufacturer can be increased. The results of this study are as follows: 1) Conducted a demand survey with the manufacturer and wearing evaluation test with the consumer on band type heating vests. 2) Suggested design drafts on band type heating vests for both genders reflecting demand survey results. 3) Conducted consumers`` preference survey for design drafts. 4) Made the sample product, and then conducted an evaluation of wearing the actual product. Overall, the wearing test results showed high satisfaction for both genders.
직립형 태양전지 발전량 개선을 위한 반사방지 마이크로 프리즘 시트
강리라(Ri Ra Kang),이민재(Min Jae Lee),김재현(Jae Hyun Kim),김범수(Bum Soo Kim),김선경(Sun Kyung Kim),이병홍(Byunghong Lee) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
We design a wedge-shaped microprism sheet suited for upright solar panels to mitigate their reflection and waveguiding losses. This microprism sheet achieves a surface reflectance of below 1% for all incident angles. Moreover, it effectively funnels transmitted rays within a narrow angular range of ±15° from the normal line, thus minimizing reflection at multiple interfaces. These optical characteristics substantially enhance the photovoltaic performance of solar panels, yielding a more pronounced increment at larger incident angles, as evidenced by indoor and outdoor experiments. Notably, outdoor testing demonstrates consistent superior performance of upright solar panels covered with the microprism sheet, irrespective of the orientation of their faces. The developed microprism sheet shows promise for scalability up to meter scales and compatibility with various photovoltaic materials.