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정연우 ( Yeon Woo Jung ),윤세원 ( Se Won Yoon ),이정우 ( Jeong Woo Lee ) 대한물리의학회 2009 대한물리의학회지 Vol.4 No.2
Purpose:The purpose of this study was to investigate effects of therapeutic exercise on the grip strength of chronic neck pain patients. Methods:Sixteen chronic neck pain patients were recruited this study(8 females. 8 males) from 21 to 30 years of age(mean aged 24.44). The experimental group received contraction-relax exercise for more than 3-5 times with therapeutic massage for 15minutes per day and three times a week during 5 weeks period. Grip strength was measured by Grip Strength Dynamometer (Model: T.K.K, 5101, Japan) at pre, 3weeks, 5weeks and follow-up 2weeks. Statistical analysis was used repeated ANOVA to know difference within period. Results:The grip strength was significantly increased within treatment period(p<.05), among them significantly increased within pre-treatment and follow-up 2weeks(p<.05). Conclusion:These results indicate that therapeutic exercise increased grip strength of chronic neck pain patients. Grip strength was more increased at follow-up 2weeks. In the future, we suggest that studies of therapeutic exercise regarding chronic neck pain patient be further studied and an appropriate therapeutic exercise will be indicated.
정연우(Y.W Jung),김한종(H.J Kim),이근호(G.H Lee),장철호(C.H Jang),이제필(J.P Lee) 전력전자학회 1999 전력전자학술대회 논문집 Vol.- No.-
A vector control method is applied to an induction motor controller for an elevator drive system. Conventional control methods to keep the secondary magnetic flux constant have a problem to decrease efficiency of an induction motor at balanced load torque regions generated frequently in operating modes of elevator. Thus energy saving control method is suitable to improve the efficiency of an induction motor at balanced load torque regions by controlling ratio of secondary magnetic flux to torque as to minimize input power of an induction motor at a given motor torque even transient states. We analyzed the effect of the flux variance in the elevator drive, and we propose the suitable controller, The effects of the energy saving were verified m the actual elevator system drive.
정연우 ( Yeon Woo Jung ),윤세원 ( Se Won Yoon ),두영택 ( Young Taek Doo ) 대한물리의학회 2010 대한물리의학회지 Vol.5 No.3
연구목적:수심 깊이에 따른 수중운동이 하지근력에 미치는 영향을 알아보고자 하는데 목적이 있다. 연구방법:신경근골격계 질환이 없는 여자 10명을 대상으로 하였고, 무작위로 수심 0.7m 그룹과 1.4m 그룹으 로 배치하였다. 수중운동은 1회 40분, 주 3회 6주 동안 적용하였다. Ultrasound MyLab25(Esaote, Italy)를 이용 하여 하지근육의 우모각과 밀도를 실험전과 후에 측정하였다. 연구결과:골격근 구조의 역학적 특성을 나타내는 우모각 변화를 비교한 결과 0.7m 그룹의 오른쪽 넙다리곧 은근과 왼쪽 넙다리곧은근, 앞정강근 그리고 장딴지근에서, 1.4m 그룹의 오른쪽 앞정강근과 장딴지근, 왼쪽 넙 다리곧은근에서 통계학적으로 유의한 차이가 나타났으나(p<.05), 수심 깊이에 따른 유의한 차이는 없었다 (p>.05). 또한, 질적 특성을 나타내는 근육 영상 밀도 변화를 비교한 결과 0.7m 그룹의 오른쪽 넙다리곧은근, 장딴지근과 왼쪽 넙다리곧은근, 앞정강근, 장딴지근에서 1.4m 그룹의 양쪽 넙다리곧은근, 앞정강근, 장딴지근에 서 통계학적으로 유의한 차이가 나타났고(p<.05), 특히 1.4m 그룹에서 현저한 증가를 보였으나 수심 깊이에 따 른 유의한 차이는 없었다(p>.05). 결론:본 연구에서는 수심 차이에 관계없이 수중운동 후 근밀도와 우모각에 영향을 미치는 것을 확인할 수 있 었다.
허리안정화 운동이 20대 여성의 월경 시 허리통증에 미치는 영향
정연우(Yun-Woo Jung) 한국엔터테인먼트산업학회 2015 한국엔터테인먼트산업학회논문지 Vol.9 No.2
본 연구의 목적은 허리안정화 운동이 월경곤란증을 가진 20대 여대생들의 허리통증에 미치는 영향을 검정하는 것이다. 대상자 선정기준은 생리 시 허리통증이 더 심한 20대 여대생 34명을 선별하여 허리안정화 운동을 주3회 5주간 실시한 실험군과 운동을 적용하지 않은 대조군으로 무작위 배치하였다. 측정도구는 생리 시 나타나는 허리통증을 측정하기 위해 주관적 사상척도를 사용하였고, 허리주변근육들의 근지구력은 각각의 근육들이 유지하는 시간으로 측정하였다. 허리안정화 운동을 적용하지 않은 대조군에 비해 실험군에서 생리통, 허리통증이 감소하였고, 허리주변근육들의 근력 및 근지구력이 향상됨을 알 수 있었다. 따라서 월경곤란증을 가진 대부분의 여성들에게 허리안정화 운동을 적용한다면 월경곤란증 뿐만 아니라 만성허리통증을 해결하는데 긍정적 도움을 줄 수 있을 거라 생각된다. This study lumbar stabilization exercises through low back pain related to menstruation appear in the twenty. Subjects were selected who had dysmenorrhea induced low back pain(n=34), randomly experimental group(n=17) and control group(n=17). Experimental Group received lumbar stabilization exercises for 3times per week during 5weeks period. The Visual Analogue Scale was used to measure low back pain dysmenorrhea induced, muscular endurance was used to measure the method that was used in the preceding paper. The Visual Analogue Scale score of lumbar stabilization exercise experimental group was significantly reduced more than the control group(p<.05). The abdomen and back muscle endurance of lumbar stabilization exercise experimental group was significantly increased more than the control group(p<.05). Dysmenorrhea induced low back pain through lumbar stabilization exercise pain reduced and could see that the increased muscle endurance abdomen and back muscles. Therefore can be easily applied in everyday life, basic data and therapeutic approach back pain for menstrual. Furthermore the results suggest that lumbar stabilization exercise more improve of almost women with dysmenorrhea quality of life.
AHP 기법을 이용한 물류정보시스템 도입요인의 가중치 분석
정연우(Youn-Woo Jung),이선규(Seon-Gyu Yi) 한국정보기술학회 2014 한국정보기술학회논문지 Vol.12 No.3
The study analyzed the criticality about introduction factors of Logistics information system suggested by advanced research, with AHP (Analytic Hierarchy Process). Introduction factors of Logistics information system studied until now were categorized as 3 factors such as organizational factors, logistics management factors and information technology factors. With AHP, introduction factors of Logistics information system were analyzed, so importance of organizational factors received the highest appraisal among primary stratification factors, and following it on the list were information technology factors and logistics management factors. In an analysis considering importance of primary stratification factors and of secondary stratification factors at the same time, the most important factor was competitive degree in industry, and following it on the list were business scale, distribution mechanization and information technology infrastructure.