하중함수의 오토 튜닝에 의한 강인한 H<SUP>∞</SUP> 속도제어기의 구현

金?完(Dong-Wan Kim),黃琪鉉(Gi-Hyun Hwang),南徵洛(Jing-Rak Nam),申東律(Dong-Ryun Shin),朴澣錫(Han-Suok Park),邊基植(Gi-Sig Byun) 대한전기학회 2001 전기학회논문지 P Vol.50 No.1

신뢰성 향상을 위한 CO₂ 용접용 다기능 제어모듈의 개발

金?完(Dong-Wan Kim),朴志浩(Ji-Ho Park),朴成元(Sung-Won Park),金宗謙(Jong-Gyeum Kim) 대한전기학회 2005 전기학회논문지 P Vol.54 No.4

2자유도 보상법에 의한 직류서보전동기의 강인한 속도제어시스템 구현

金?完(Dong-Wan Kim) 대한전기학회 2003 전기학회논문지 P Vol.52 No.2

ATMega128을 이용한 디지털/아날로그 자동조명제어장치의 개발

金?完(Dong-Wan Kim),朴成元(Sung-Won Park) 대한전기학회 2006 전기학회논문지 P Vol.55 No.4

In this paper, an automatic lighting control system is developed using microprocessor. The developed system consists of a digital lighting control unit, an analog lighting control unit, and a lighting control simulator. In the developed system, ATMega128 is used as the main controller. The developed digital lighting control unit consists of eight modules and the developed analog lighting control unit consists of six modules respectively. Additional, the developed simulator consists of a digital and an analog lighting control simulation using graphic user interface. And so this developed system can be applied to the controller design of the interior and exterior lighting equipment.

Smart Tag를 이용한 컨테이너의 GPS 위치 추적 시스템 개발

金?完(Dong-Wan Kim),朴志浩(Jee-Ho Park) 대한전기학회 2006 전기학회논문지 P Vol.55 No.4

In this paper, we explore a novel transportation container in the marine terminals. The container includes Smart Tag embedded with radio frequency(RF) chips, which is used to access information about productions and possibly incorporated with GPS systems for integrated managements of them. The proposed mechanism is valuable for decreasing cost, increasing satisfaction of customers, and preventing economic loss due to production missing, thus increase of economic efficiency is highly anticipated. Consequently, accurate and proficient management is considerably accomplished in overall procedures of inventory and currency by means of the proposed systems.

일부 50대 척추전방전위증 환자의 유형별 자기공명영상상 추간판 변형 형태 고찰

김석,반효정,윤현석,한경완,우재혁,Kim, Seok,Bahn, Hyo-Jung,Yoon, Hyun-Seok,Han, Kyung-Wan,Woo, Jae-Hyuk 척추신경추나의학회 2011 척추신경추나의학회지 Vol.6 No.2

Objectives : The purpose of this study is to find out the characteristics of intervertebral disc changes and relative factors of the spondylolisthesis patients in fifties by type of spondylolisthesis. Methods : We investigated 69 cases of patients who visited one Korean traditional medicine hospital and were diagnosed as spondylolisthesis on L-spine X-ray and L-spine magnetic resonance imaging(MRI). We selected 37 lytic spondylolisthesis patients and 32 degenerative spondylolisthesis patients. We analysed the relativity between the numbers of changed discs, types of changed disc, locations of nerve compression and types of spondylolisthesis. Results : 1. The number of changed discs increase in lytic type, but there is no statistically significant difference. 2. Bulging disc is the dominant type of disc change. There is no significant difference between two types. 3. Both foraminal type was shown dominantly in lytic spondylolisthesis, diffuse type in degenerative spondylolisthesis by the analysis of the location of the nerve compression. But the symptoms of patients and dermatome did not match in most of the cases. Conculsions : The direction of nerve compression is different while the disc changing aspects are similar in both types. In several spondylolisthesis patients in fifties, symptoms of patient are related to degeneration of vertebrae, not to the type of spondylolisthesis.

중년 남성 고관절 등속성 근력과 골밀도의 상관관계 분석

김아람(Kim, A-Ram),유정완(You, Jung-Wan) 한국체육과학회 2018 한국체육과학회지 Vol.27 No.6

The purpose of this study is to provide basic data for preventing male osteoporosis by analyzing the effects of hip joint isokinetic muscular function on lumbar and thigh bone density of middle-aged men. The subject of this study consisted of 23 middle-aged men in S-si and measured loading rate of hip joint 45dge/sec, 300dge/sec using multi-frequency impedance device(Inbody 4.0, Biospace Co.) for measuring body composition, dual energy x-ray bone densitometer(PRODIGY, GE Medical Systems Lunar) for measuring thigh bone density, and Biodex system 3 for measuring isokinetic muscular function. This study used SPSS 21.0 version for statistical processing. The isokinetic strength variable that made the biggest effect on thigh bone density of middle-aged men was the right muscle strength(extension muscle strength: r=.633, p<.01, flexion muscle strength: r=.585, p<.01), and muscle endurance had no correlation. According to the regression analysis, flexion muscle strength showed higher explanation power for thigh bone density among isokinetic muscular strength variables(muscle power: 69.9% vs 22.7%, muscle endurance: 17.9% vs -). Independent variables that make a significant effect on hip joint flexion muscle were in the order of femur, neck, troch, and BMD, and regression equation of hip joint isokinetic strength is -13.645+337.710(Neck BMD)-228.744(Troch BMD) and 70%(67% according to the modified coefficient of determination) is being explained by the independent variable included in the model.

대학생의 운동습관이 보행운동에 미치는 영향

유정완(You, Jung-Wan),김아람(Kim, A-Ram),백승희(Baek, Seung-Hui) 한국체육과학회 2018 한국체육과학회지 Vol.27 No.6

This study was conducted on 10 male students; 5 who were exercising regularly 4 days or more weekly with exercise habits as exercise group, and 5 male students who exercise less than once a week without exercise habits as non-exercise group. The purpose of this study was to investigate if there is any difference between the locomotive movements of a young adult in accordance with the movement habits, what causes the difference, and to verify what it means from physiological perspective. While the stride length slightly increased during exercise in both condition for exercise group, the non-exercise group showed a slight increase in 80m walking but decrease in 100m waling(p<.05). During 80m resting/walking and 100m resting/walking, the average heart rate was significantly higher for the non-exercise group than for the exercise group(p<.05). The HR of non - exercise group was significantly higher than that of exercise group in 80m walking(p<.05), and the HR of the non-exercise group kept increasing compared to little change for the exercise group. Also, 100m walking showed the same tendency when walking at 80m(p<.05). 100m walking was significantly higher in non - exercise group than in exercise group during latter trend(p<.05). Especially during 100m waling, the HR was significantly lowered to show a significant difference(p<.05). Both the grip strength and one-legged stand tend to be higher in the exercise group, but the significant difference was recognized. Back muscle strength, knee extension power and sit-ups were significantly higher in the exercise group than in the non-exercise group(p<.05). There was a significant positive correlation between knee extension power and stride change(p<.05, r=.69). In Conclusion, Considering the effect of age and declining muscle strength and declining strength of modern young adults, the walking problems in youth cannot be avoided. Therefore, it is necessary to strengthen walking ability by deepening the understanding of the problem of walking and exercise regularly from adolescence.

성인 뇌성마비의 관절가동범위가 건강관련 삶의 질에 미치는 영향

유정완(You, Jung-Wan),김규태(Kim, Kyu-Tae),김아람(Kim, A-Ram),최승욱(Choi, Seung-Wook) 한국체육과학회 2017 한국체육과학회지 Vol.26 No.2

This study was based on the fact that the physical and motor performance of CP (Cerebral Palsy; CP) is closely related to the quality of life (QOL), and the objective was to clarify the relationship between the whole range of ROM (ROM) and the Health-Related Quality of Life (HRQOL). As a result, cervical spine (rotation), shoulder (flexion & extension, abduction & adduction) of the upper body ROM showed a significant correlation (.366~.448) with physical functioning (P<.05). Lower body hip (flexion & extension) and Physical functioning, hip (abduction & adduction) with Physical functioning, Social functioning, Mental health, Physical Summary Score, and Mental Summary Score, correspondingly showed a positive correlations (.278~.541)(P<.05). And knee (internal rotation & external rotation) showed a significant correlation (.278 ~ .350) with physical functioning, mental health, and mental summary score (p<.05). Finally, ankle (dorsiflexion & plantarflexion) showed a positive correlation (.331~.455) with Physical functioning, Vitality, Social functioning, Role emotional, Mental health and Mental Summary Score (p<.05). In addition, the Mental Summary Score was closely related to ankle (dorsiflexion & plantarflexion) and shoulder (flexion & extension) (p<.05) and was a predictor variable that could account for 30% of the mental summary score. In conclusion, ROM of the lower body, rather than upper, of adult CP showed a close relationship with HRQOL in the whole body ROM of the adult CP, and it became clear that it has a great influence on the mental summary score. And also, ankle and shoulder ROMs were found to be important predictors of the Mental Summary Score.

듀에슬론 경기의 레이스 성적에 영향을 미치는 신체적 및 생리학적 요인에 관한 연구

유정완(You, Jung-Wan),김아람(Kim, A-Ram),심유진(Shim, Yoo-Jin),김규태(Kim, Kyu-Tae) 한국체육과학회 2017 한국체육과학회지 Vol.26 No.3

The purpose of this study is to identify the physical and physiological factors that affect the performance of the du-athlon competition for college triathlon athletes. Subjects were 12 healthy male college students from the triathlon club. Each race performance is composed of first run 4.3km, bike 36.9km, and the second run 4.5km, total distance of 45.7km which is the official race record of the du-athlon. The experiment consisted of ① an incremental load running test using a treadmill (Run Test), ② a gradual submaximal bike test of running and cycling using a treadmill and a bicycle ergometer a (Run-Cycle Test), and ③ cycling and running gradual submaximal test (Cycle-Run Test) was conducted three times. Examining the Stepwise Multiple Regression Analysis of the physical and physiological factors affecting race results, of the maximum speed of the treadmill measured in the Run Test and the two measurements in CE from the Cycle-Run Test were detected as factors affecting the race performance. The correlation coefficient was 0.82 and detected two measurements can be used to predict race outcomes by 84%. In conclusion, from the results of this experiment, maximum power at maximum speed of treadmill in running race and effective endurance was needed in the bike race for du-athlon competition. Especially, for cycle race, which takes up most part of the du-athlon race, it appears that the power which can sustain a constant load for a long time and long distance is thought to be important.