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HID LAMP 驅動을 위한 類似共振形 INVERTER에 관한 硏究
金光一,裵相俊 慶一大學校 1992 論文集 Vol.8 No.1
The cricuit of QRI(Quasi-Resonant Inverter) which is able to regulate frequency in the output voltage by the ZVS(Zero Volt Switching) was investigated. We found parameters in the circuit of QRI so that they have application to the HID(High Intensity Discharge) Lamp drive. Then we simulated that by personal computer and summarized the result of simulation.
Kwag, Kwang Il,Seo, Eun Kyoung,Kim, Tae Yoon 대한물리치료학회 2016 대한물리치료학회지 Vol.28 No.2
Purpose: The purpose of this study was to determine the effects of group exercise, manual therapy, and a home exercise program on VAS (visual analogue scale), ROM (range of motion) of shoulder, and functional outcome in adhesive capsulitis. Methods: The study was conducted with 45 patients. All subjects were randomly assigned to 3 groups: group exercise (n=15), manual therapy (n=15), home exercise (n=15). The subjects performed an intervention program 3 times a week for 4 weeks a total of 12 times. Outcome measurements were VAS, ROM, and Constant-Murley score outcome measures. Measurements were taken four times, at baseline, 4 weeks later, 8 weeks later, and 12 weeks later. Results: VAS, ROM of the shoulder, and functional outcomes showed improvement in all groups at the final follow-up (p<0.05). VAS and ROM showed greater improvement with group exercise and manual therapy than home exercise, however, there were no significant differences between the two groups (p>0.05). Functional outcomes showed the greatest improvement in group exercise at the final follow-up. This improvement was greater than with manual therapy or home exercise (p<0.05). Conclusion: Group exercise and manual therapy were more effective for improving pain, ROM, and function than home exercise in adhesive capsulitis. In particular, group exercise is more effective in functional recovery than other physiotherapy interventions.
Yoo, Kwag-Il,Lee, Jin Hwan The Korean Society of Oceanography 1980 韓國海洋學會誌 Vol.15 No.1
1976년 7월부터 1979년 5월까지 3년간 진해만의 표층에서 격월로 식물성플랑크톤 군집 변화에 영향을 미치는 환경요인(수온, 염분도, pH, 투명도, 용존산소, Chlorophyll-a,c, NO$_{2}$-N 및 PO$_{4}$-P)에 대하여 조사했다. 9가지 환경요인이 식물성플랑크톤 군집 변화에 37.20% 영향을 미치고 있었으며 각각의 환경요인으로는 PO$_{4}$-P, 투명도, Chlorophyll-a, 수온, 염분도 등이 중요한 요인이었으며 용존산소, NO$_{2}$-N, pH 및 Chlorophyll-c 는 크게 영향을 미치지 않고 있었다.
요부안정화 운동이 만성 요통을 가진 여성 노인의 우울과 기능에 미치는 영향
곽광일(Kwang-Il Kwag),최희영(Hee-Young Choi),김진영(Jin-Young Kim) 한국엔터테인먼트산업학회 2013 한국엔터테인먼트산업학회논문지 Vol.7 No.2
본 연구의 목적은 만성요통을 가진 여성 노인들을 대상으로 요부안정화운동을 실시하여 우울과 기능의 변화를 알아보고자 하였다. 대상자는 18명의 여성노인들을 무작위로 선택하여, 일반물리치료와 요부안정화를 받은 실험군과 일반물리치료를 받은 대조군으로 나누어 주당 3회 50분씩 6주간 시행하였다. 운동 전·후의 우울과 장애지수, 균형능력을 측정하여 운동 전과 운동 후, 군간을 비교하였다. 실험 결과 요부안정화군에서 우울척도에서 유의한 감소를 가져왔고, 오스웨스트리 요통장애지수, 일어서기검사에서 유의한 향상을 가져왔다. 한발서기 검사에서는 요부안정화 운동군의 왼쪽에서만 유의한 증가를 보였다. 이러한 결과는 요부안정화 운동이 만성요통을 가진 여성노인에게 기능의 향상 뿐만 아니라 우울의 감소에도 효과적이란 것을 알 수 있다. The purpose of this study was to investigate the effects of lumbar stabilization exercise on depression and functional improvement in elderly women with low back pain. So, 18 elderly women were randomly selected, including lumbar stabilization exercise group(n=9) and control group(n=9). In a period of 6 weeks in total, they took lumbar stabilization exercise for 50 minutes 3 time a week. Before exercise and 6 weeks later. Beck Depression Index(BDI), Oswestry disability index (ODI), Timed Up & GO test(TUG), One Leg Stand Test(OLST) were conducted. We had measured ODI, BDI, OLST, TUG values before exercise and 6weeks later in the two groups. As a result, in all measurement values, for ODI, BDI, TUG, OLST increased significantly compared to before measurement value(p<.05) in lumbar stabilization exercise group and increased significantly compared to control group in ODI, BDI, TUG, OLST measurement values. As shown from the results, it is understood that lumbar stabilization exercise could improved depression as well as function in elderly women with low back pain.
유전 및 육종 : 국내 홀스타인 젖소의 비유지속성 평가에 대한 고찰
조광현 ( Kwag Hyun Cho ),윤호백 ( Ho Baek Yoon ),조충일 ( Chung Il Cho ),민홍립 ( Hong Ryp Min ),이준호 ( Joon Ho Lee ),공홍식 ( Hong Sik Kong ),이학교 ( Hak Kyo Lee ),박경도 ( Kyung Do Park ) 한국동물자원과학회(구 한국축산학회) 2013 한국축산학회지 Vol.55 No.3
본 연구는 홀스타인 젖소, 436,690두의 검정일 유량기록 총4,366,900개를 이용하여 비유지속성에 대한 특성과 새로운 평가형질로서의 가능성을 조사하는데 있다. 1산차, 2산차와 3산차 이상의 평균 비유지속성은 각각 97.5%, 95.1%,와 94.6% 였으며, 최고 유량 도달 이후 비유지속성이 일괄적으로 감소하는 추세를 나타내었다. 분만 후 최고유량에 도달하는 평균 비유일수는 약 50일로 조사되었으나 실제로 2차 검정 (36~66일)시에 최고 유량에 도달하는 개체의 기록은 전체 자료의 33.2%에 불과하였다. 또한 1차 검정 시에 최고 유량에 도달한 개체들의 비유일수에 따른 유생산량 변화는 2~4차 검정에서 최고유량을 나타내는 개체들의 변화와는 많은 차이를 나타내었다. 평균 비유지속성에 대한 유전력과 반복력은 각각 0.16과 0.35로 추정되었으며, 10차 검정시 평균 비유지속성에 대한 검정차별 유전상관을 보면 7차 검정시 이상일 때 0.91이상이었으며, 검정차수가 줄어들수록 유전상관은 급격히 감소하였다. Data I 에 대한 Data II 화 III의 육종가 상관은 각각 0.80과 0.72, 순위 상관은 각각 0.78과 0.71로 나타났다. 결과적으로 자료가 추가 될수록 육종가 및 순위 상관은 낮게 나타났다. The characteristics of lactation persistency was investigated for new evaluation trait using 4,366,900 milk yield records from 436,690 heads of Korean Holstein dairy cattle. The average lactation persistencies of first parity, second parity and over third parity were 97.5%, 95.1% and 94.6%, respectively and there was a trend that after the peak yield, lactation persistency decreased collectively. The average days of peak milk yields after calving was about 50 days, but only 33.2% of cows reached peak yields at 36~66 days (second test day). Also, there was a difference between the milk yield of cows which reached peak yields at first test day by lactation days and that of cows which reached peak yields at second to fourth test day. The estimates of heritability and repeatability for mean lactation persistency were 0.16 and 0.35, respectively. The genetic correlation between cumulative lactation persistency from third to tenth test day and that from third to seventh test day was 0.91 and while it increased in later test day, it decreased sharply in earlier test day. The breeding value correlations of Data II and III for Data I were 0.80 and 0.72, respectively, while the rank correlations were 0.78 and 0.71, respectively. Based on the results, the breeding value and rank correlations decreased when more data were added.
Cytotoxic Activity of $13(E)-labd-13-ene-8{\alpha}$, 15-diol on Human Epithelioid Carcinoma Cells
Lim, Jin-A,Kwag, Jung-Sook,Perry, Nigel B.,Kim, Il-Kwang,Baek, Seung-Hwa The Physiological Society of Korean Medicine and T 2005 동의생리병리학회지 Vol.19 No.1
The cytotoxic activity of $13(E)-labd-13-ene-8{\alpha}$, 15-diol (1), isolated from the ethanol extract of Brachyglottis monroi, was evaluated against human oral epithelioid carcinoma cells(KB).
A Novel Approach to the Enhancement of Lane Estimator by using Kalman Filter
Moon-Hyung Song,Chang-il Kim,Jong-Min Kim,Kwang-Soo Lee,Hyun-Bae Park,Jae-Seok Jeon,Su-Jin Kwag,Moon-Sik Kim 제어로봇시스템학회 2017 제어로봇시스템학회 국제학술대회 논문집 Vol.2017 No.10
Recently vision sensor based lane detection technology is being magnified as automated driving service get into the acceleration step. However, lane detection is not used lateral risk assessment or lateral control alone but also used front target vehicle selection for the longitudinal control system. Ego lane detected from vision sensor is a good assumption as an ego vehicle’s driving path and would be useful to front target vehicle decision. In this sense, the importance of curvature and curvature-rate which have been relatively devaluated then lateral offset and heading angle is getting higher. In this study, a novel approach of lane estimator for more robust curvature information is proposed with Kalman filter. The lane estimator is designed with clothoid road model and an assumption based on lane width. To verify the performance of proposed lane estimator, real-car test in the public road is carried out. The test result shows that robustness of the proposed lane estimator even in failure situation of front camera. Furthermore, the result also showed that accuracy and usefulness of lane estimation based target selection. Through the test result analysis, filtered only two coefficients which related clothoid curvature parameters could make lane information more accurately.