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- 저자 : 김창욱 ( Chang Wook Kim ) (검색결과 139 건)
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김창욱,조성원,이충웅,Kim, Chang-Wook,Cho, Seong-Won,Lee, Choong-Woong 대한전자공학회 1994 전자공학회논문지-B Vol.b31 No.11
This paper deals with fast competitive learning using classified learning rates. The basic idea of the proposed method is to assign a classified learning rate to each weight vector. The weight vector associated with an output node is updated using its own learning rate. Each learning rate is changed only when its corresponding output node wins the competition, and the learning rates of the losing nodes are not changed. The experimental results obtained with image vector quantization show that the proposed method learns more rapidly and yields better quality that conventional competitive learning. 본 논문은 분류된 학습률을 이용한 고속 경쟁 학습에 대한 연구이다. 이연구의 기본 개념은 각 출력 노우드의 연결강도 벡터에 분류된 학습률을 할당하는 것이다. 출력 노우드의 각 연결강도 벡터는 자기 자신의 학습률에 의하여 갱신된다. 각 학습률은 관련되는 출력 노우드가 경쟁에서 승리할 때에만 변화되며, 승리하지 못한 노우드들의 학습률은 변화되지 않는다. 영상 벡터 양자화에 대하여 실험한 결과는 제안한 방법이 기존 경쟁 학습 방법에 비하여 더 빠르게 학습되고 더 좋은 화질을 갖게 됨을 보였다.
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김창욱,신문석,김병천,이규석,송준영 ( Chang Wook Kim,Moon Seok Shin,Byung Chun Kim,Kyu Suk Lee,Jun Young Song ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.6
Epidermodysplasia verruciformis(EV) is a rare, sometimes familial disorder characterized by chronic infection with EV-specific HPV types. It manifests itself as numerous flat warts, red and brownish macules, and pityrias:s versicolor-like lesions. Immunodeficient staies such as AIDS renal transplantation, Hodgkins dis ase, and systemic lupus erythematosus, have been associated with EV. We report a case of a 42-year old female with EV, with lesions on the chest, shoulders, and back, For about the past 2, years, she had been treated with prednisolone for systemic lupus erythematosus. Histopathological findings revealed loose basket-weave-like hyperkeratosis and there were clear large cells arranged in nests in the granular and spinous layers. Their nuclei were shrunken and pyknotic, and the clear cytoplasm was dotted with dispersed keratohyaline granules of different sizes anr shapes. Electron microscopic findings showed aggregates of many viral particles in the nuclei of displastic epidermal keratinocytes. Pan papilloma virus monoclonal Antibody positive nuclei were;hown by immunoperoxidase staining. She has been treated with CO, laser and Tretinoin(0.1% ) oin ment. The patient is being monitored for any signs of recurrence for a period of 5months (Korean J Dermatol 1997;35(6): 1203-1207)
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김창욱(Chang-wook Kim) 한국자료분석학회 2020 Journal of the Korean Data Analysis Society Vol.22 No.5
골프 스윙 시 잘못된 라이로 임팩트하게 되면 볼의 구질을 포함한 골프 샷 데이터에 영향을 미치는지 알아보고 올바른 라이에 대한 중요성을 인식시키는데 그 목적이 있으며, 임팩트 시 라이보드에서 어떤 라이형태를 가지고 있는지 확인하고 트랙맨을 통해 샷 분석을 실시하였다. 정확한 라이를 측정하기 위해 클럽 솔(sole)에 라이 마킹 테이프를 붙이고 클럽페이스에도 임팩트마킹테이프를 부착하였다. 라이는 토우가 들리는 경우, 힐이 들리는 경우, 올바른 라이의 경우, 3가지의 라이형태에 따른 샷 데이터를 측정하였다. 아마추어 골퍼의 라이변화에 따른 샷 변화에 대한 연구의 결과는 라이의 변화에 따라 어택앵글, 클럽패스, 볼의 비행방향, 스매시 펙터에서 유의한 차이가 있는 것으로 나타났다. 정확하지 못한 라이는 볼의 비행방향과 볼의 구질 변화에 많은 영향을 미치는 것으로 나타났지만 올바른 라이를 가졌더라도 자신의 스윙에 맞게 설정되지 않는다면 올바른 샷을 만들 수 없음을 알 수 있었다. 본 연구에서의 결론은 아마추어의 잘못된 구질은 라이의 영향보다는 다른 스윙에 대한 원인이 더 많이 영향을 미치는 것으로 나타났다. It aims to find out influence on golf shot data including ball quality when impact is made with wrong lie and to have awareness on the importance of correct lie. To measure precise lie, lie marking tape is put on club sole, and impact marking tape is also put on the club face. According to 3 lie forms cases of T(toe touched), H(heel touch) and C(center touch), shot data were measured. Study result on shot change by lie change of amateur golfer showed significant differences in attack angle, club path, ball flying direction and smash factor according to the change of lie. An inaccurate lie has a great influence on the direction of flight of the ball and changes in the pitch of the ball. However, even if you have the right lie, you can see that you cannot make the right shot if it doesn t fit your swing.
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골프스윙시 기술수준에 따른 신체분절의 Kinematic sequence 분석
김창욱(Chang Wook Kim) 한국사회체육학회 2004 한국사회체육학회지 Vol.0 No.22
Conducted on professional golf players with more than 5 years of experience, ordinary golfers with 3 or more years of experience and beginners with less than 1 year of experience, this research proposes an efficient method for increasing power by carrying out kinematic sequence of each part of the body. 1. In a study of back-swing pattern, the patterns of pelvis-torso-club-wrist and torso-pelvis-club-wrist were most common among players, while studying down-swing pattern showed that players used pelvis-torso-wrist-club and pelvis-wrist-torso-club patterns most 2. A statistical study of maximum angular velocity showed clearly that professional golfers exhibited largest velocity, followed by ordinary golfers and beginner golfers. Overall, this research, which mainly looked into the difference among different groups for rotating lower and upper bodies, showed that there were significant differences during rotation of a upper body and the importance of learning the accurate swing motions after knowing its principle as beginners consistently repeated the same movements in bad positions.
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김창욱(Chang Wook Kim),우상효(Sang Hyo Woo),지아모이우딘(Zia Mohy Ud Din),원철호(Chul Ho Won),홍재표(Jae Pyo Hong),조진호(Jin Ho Cho) 한국산업정보학회 2008 한국산업정보학회논문지 Vol.13 No.1
최근 POC (Point of care)와 같은 의료서비스의 질을 높이기 위한 연구가 많이 진행되고 있다. 서비스의 질을 높이기 위해서는 장비뿐만 아니라 간호사 인력의 확충이 매우 중요하다. 그러나 현재 대한민국의 간호사 인력은 매우 부족하며, OECD 국가 중 최하위를 기록하고 있다. 많은 간호사의 업무 중 단순 반복적인 업무를 대체할 경우, 추가적인 인건비 없이도 고급의 간호 인력을 다른 업무에 사용할 수 있다. 수많은 단순 반복적인 간호사 업무 중에는, 본 논문에서는 링거액을 교체하는 업무에 초점을 맞추었다. 그러므로 본 논문에서는 링거의 자동 교체를 위하여, 먼저 링거의 잔량을 검출하는 알고리즘을 구현하였다. 구현된 알고리즘은 실제 현장에 사용할 때 많이 발생할 수 있는 조명 문제의 해결을 위하여 수정된 SQI 알고리즘을 사용하였으며, 이후 간단한 히스토그램 누적 방법을 이용하여 링거의 잔량을 검색하였다. 구현된 알고리즘은 링거 교체에 사용될 수도 있으며, 간호사들에게 경보를 주는 곳에도 사용할 수 있다. Recently, there are many researches to improve the quality of the medical service such as Point of care (POC). To improve the quality of the medical service, not only good medical device but also more man power is required. Especially, the number of nurses are very few in Korea, that is almost the lowest rank compared to OECD countries. If the simple repetition works of the nurse could be removed, it is possible to use the skillful nurse for other works and provide better quality services. There are many simple repetition works which the nurses have to do, such as replacing the ringer’s solution. To replace the ringer’s solution automatically, it is necessary to detect residual quantity of the ringer’s solution. In this paper, image processing is used to detect the residual quantity of ringer’s solution, and modified self quotient image (SQI) algorithm is used to strong background lights. After modified SQI algorithm the simple histogram accumulation is done to find the residual quantity of the ringer"s solution. The implemented algorithm could be use to replace the ringer"s solution automatically or alarm to the nurses to replace the solution.
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김창욱(Chang Wook Kim) 민족음악학회 2002 음악과 민족 Vol.24 No.-
Hong Nan-pa is an artist who reclaimed new land for western music history in Korea. The research was held much as his achievement already to such reason. Nevertheless, these preceding researches resulted several bug. First, it stops only to reconstruct the preceding research without doing with criticism or positive data. Second, the estimation about Hong Nan-pa is being too self-aware. And third, only one side about him is being embossed because it leans toward individuation research rather than synthesis research. Therefore, writer tried to supplement these mistakes. That is, I planned epicrisis of data sources such as newspapers and magazines in the period of Japanese Ruling Korea. In addition, I thought that Hong Nan-pa`s individual history and social history should be studied at the same time. Together, I thought that micro-historical access way needed to supplement macroscopic-history until now. Writer illuminated his family line and the culture here. This will become the foundation of regular Hong Nan-pa research.
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