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최원갑(Choi, Won-Gab),신직수(Shin, Jic-Soo) 한국교육시설학회 2006 敎育施設 Vol.13 No.1
Elementary school classroom designs have been developed toward open education system to provide students diverse and improved educational environments since the early of 1990 in Korea. Unfortunately, the quality of music room has not still shown dramatic improvements due to the lack of the acoustical knowledges of architects. This report aims to investigate typical acoustic quality of previous or current music room of elementary schools and show new acoustic treatment technologies to improve the room acoustic of music room by adapting composite perforated panel system and diffusion technology. The music room at Daihyun Elementary school in Yongin was chosen as a case study of this report. The music room was measured to be analyzed using field measurements and the acoustical specifications of composite perforated panel systems and kinds of diffusors were set. Acoustic measurements were performed after the renovation to show the differences between previous room acoustic and after the acoustic renovations. As the result, the case study has shown that the new composite perforated panel systems and diffusion surfaces lowered reverberation time at proper level along with improving the clarity of music, RASTI, and spatial impressions. Also, acoustic interferences such as comb filtering and flutter echoes have been controlled dramatically by diffusive surfaces. The study shows music rooms in elementary schools, middle and high schools can be improved by adapting composite perforated panel systems and diffusors.
고교남자선수들의 운동보조물과 약물복용에 대한 태도 및 사용실태 조사연구
김동희(Dong Hee Kim),이하얀(Ha Yan Lee),최원갑(Won Gab Choi),백영호(Yeong Ho Baek),한성섭(Sung Sub Han) 한국체육교육학회 2001 한국체육교육학회지 Vol.6 No.1
This study was performed to investigate the attitude and use pattern related to nutritional ergogenic aids and doping supplements use by the high school male athletes. Three hundred and eighty male athlete were chosen from various rural communities in Chonnam province, Seoul, Pusan and Kwangju city. Nonparametric chi-square statistical tests and cross tabulations were used to compare the difference. The results were as follows; 1. Nutritional ergogenic aids The overall mean prevalence of athletes` ergogenic aid supplements use was 23.8%(n=89), and the most common supplements were vitamin and mineral, and the least ones were carbohydrates and protein. 2. Doping and drug abuse 1) The overall mean prevalence of athletes` doping and drug supplements use was 8.2%(n=31), and the most common supplements were sympathomimetic-amines and androgenic-anabolic steroid(muscle pill). 2) The most frequent reason for using supplements was $quot;to reduce body weight$quot; and $quot;to reduce anxiety to competition$quot;.
블록 단위 모션정보를 이용한 감시시스템의 움직임 객체추적
신헌수(Heon Soo Shin),현교환(Kyo Hwan Hyun),김성민(Sung Min Kim),최원갑(Weon Gab Choi),원치선(Chee Sun Won),엄기환(Ki Hwan Eam) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7
Object tracking is one of the attractive issues in many applications such as security and surveillance. Although many algorithms have been studies for improving the object tracking technique. We proposed method that the image is divided into several sub-blocks. And the motion information of current image is calculated by block-based motion estimation.