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오효석(Hyo-Seok Oh),최용은(Yong-Eun Choi),이재봉(Jea-Bong Lee),김재문(Jae-Moon Kim) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.5
최근 ICT 기술의 발전과 철도차량에 유지보수 효율 향상 및 비용 절감을 위해 CBM(Condition Based Maintenance) 적용에 대한 연구가 활발해지고 있다. 본 논문에서는 철도차량 보조전원장치에 사용되고 있는 필터용 커패시터의 상태진단 타당성 검증을 위해 축소형 AC/DC 컨버터를 구성하였으며, 부하변동이 큰 보조전원장치(SIV)의 특성에 따라 부하의 크기를 가변하며 커패시턴스 추정 실험을 하였다.
충남 서산태안지역에서 사육중인 송아지의 코로나바이러스 감염률 조사
육심용 ( Sim Yong Yook ),남이현 ( Nam I Hyun ),이미성 ( Mi Sung Lee ),한우수 ( Woo Soo Han ),강형주 ( Hyeong Joo Kang ),전동민 ( Dong Min Jeon ),이재봉 ( Jea Bong Lee ) 한국가축위생학회 2009 韓國家畜衛生學會誌 Vol.32 No.3
This survey was carried out to investigate the prevalence of bovine coronavirus (BCV) infection for the calves in Seosan-Taean Area. A total of 75 samples were collected from fecal swab to detect BCV by RTPCR Results obtained through the survey were as follows; By RT-PCR (455bp) BCV was detected from 13 of the 75 sample of fecal swab from calves. The calves under 3 month showed the highest BCV detection rate.
충남 서산,태안지역에서 착유중인 젖소의 M.R.T.용 집합유에 대한 요네병 감염률 조사
전동민 ( Dong Min Jeon ),육심용 ( Sim Yong Yook ),남이현 ( Nam I Hyun ),이미성 ( Mi Sung Lee ),한우수 ( Woo Soo Han ),강형주 ( Hyeong Joo Kang ),이재봉 ( Jea Bong Lee ) 한국가축위생학회 2009 韓國家畜衛生學會誌 Vol.32 No.3
TThis survey was carried out to investigate the prevalence of the antibody for bovine paratuberculosis (Johne`s disease) in dairy cattle in Seosan-Taean area. From February to August in 2009, 254 M.R.T. samples were collected from 57 farms in the regions and enzyme immuno-sorbent assay (ELISA) was conducted. Among 254 samples, 13 (5.1%) M.R.T. samples of 3 (5.2%) farms were positive by ELISA. In regional analysis, 1 (3.1%) of 34 farms in Seasan and 2 (8.6%) of 23 farms in Taean were positive in ELISA. According to the raising scale of dairy farms, the farm with below 30 heads showed the higher positive rate (2 out of 3 positive farms) than the farms with over 30 heads (1 out of 3 positive farms).
이정흔,임종은,이재봉 忠南大學校體育科學硏究所 1997 體育科學硏究誌 Vol.15 No.1
The purpose of this study is to analyze the mental forms of Taekwondo players who attended 97. National contest. For this study, Loehr ' s(1982) mental power guestionair was used into 180 men and 164 women in the view of sex, school background, prize career and practice career. The conclusions are like the followings. 1. Analysis result between men(n=190) and women (n=164) was meaningful in the confidence factor, visualization, image factor and Taekwondo control factor. 2. Mental form analysis result of high school players(=180) and University players (n=164) was meaningful in intention control factor, image and visualization(P<,05) high school players showed higher grade in intention control factor than male University players, but vice versa in image and visualization. 3. In the comparison of superior players(n=162) with inferior players(n=188), superior players showed more meaningful difference in confidence factor, visualization, image and attitude control factor than inferior players statistically. 4. In the comparison of practice career (under years(n=92) 5-7 years (n=108) over 8 years (n=154), the factors that showed increased grade as much as practice career were confidence factor, visualization, image factor, active energy factor and attitude factor, but not in disenchantment level, intention control factor and motivation factor. Applying ANOVA, confidence, intention control, image, visualization factor and attitude control factor showed meaningful difference(P<,05, P<.01)