http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 오윤찬 (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
-
-
엎드린 자세에서 고관절 신전 시 고관절 외회전 각도가 골반과 하지 근활성도에 미치는 영향
오윤찬 ( Yun Chan Oh ),신헌석 ( Heon Seock Cynn ),이충휘 ( Chung Hwi Yi ),전혜선 ( Hye Seon Jeon ),윤태림 ( Tae Lim Yoon ) 한국전문물리치료학회 2014 한국전문물리치료학회지 Vol.21 No.3
The aim of this study was to investigate the effect of hip external rotation angle on pelvis and lower limb muscle activity during prone hip extension. Sixteen healthy men were recruited for this study. Each subject performed an abdominal drawing-in maneuver (ADIM) in a prone position, and extended the dominant hip at three different hip external rotation angles (0°, 20°, 40°) with a 30° hip joint abduction. Activity of the gluteus maximus (G Max), gluteus medius (G Med), and hamstring (HAM) and the G Max/HAM and G Med/HAM ratios were determined with surface electromyography (EMG). The EMG signal was normalized to 100% maximum voluntary isometric contractions (MVICs) and expressed as %MVIC. Data were analyzed by one-way repeated analysis of variance (alpha level=.05) and the Bonferroni post hoc test. Significant differences in G Max and G Med muscle activity were noted among the three different hip external rotation angles. G Max muscle activity increased significantly at both 40° (p=.006) and 20° (p=.010) compared to a 0° hip external rotation angle. G Med muscle activity increased significantly at 20° (p=.013) compared to a 40° hip external rotation angle. The G Max/HAM activity ratio increased significantly at both 40° (p=.004) and 20° (p=.014) compared to a 0° hip external rotation angle. The G Med/HAM activity ratio increased significantly at 20° (p=.013) compared to a 40° hip external rotation angle. In conclusion, 40° and 20° hip external rotation angles are recommended to increase G Max activity, and 20° hip external rotation is advocated to enhance G Med muscle activity during prone hip extension with ADIM and 30° hip abduction in healthy subjects.
-
박흥근,박진무,오윤찬,Park, Heung-Geun,Park, Jin-Mu,O, Yun-Chan 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.7
Under repeated rolling, initial plastic deformation introduces residual stresses which render the steady cyclic state purely elastic. This is called the process of shakedown. Many studies have been done about the shakedown in semi-infinite half space using calculated Hertizian pressure. In this paper shakedown processes in a shaft are studied by finite element analyses of a two dimensional(plane strain) model with elastic-linear-kinematic-hardening-plastic material subjected to repeated, frictionless rolling contact. Symmetric and non-symmetric pressure distributions are obtained using a simplified model of the bearing-shaft assembly. The rolling contact is simulated by repeatedly translating both pressure distributions along the surface of the shaft. By the influence of the non-symmetric pressure, larger residual radial tensile stress is generated in the immediate subsurface layer, which may make a crack propagate and, the subsurface undergoes a zigzag plastic deformation during the shakedown process, which may lead to a crack initiation.
-
제주도 공공와이파이의 입지 특성과 이용 요인에 관한 연구
김흥순 ( Heungsoon Kim ),최승호 ( Seungho Choi ),이하민 ( Hamin Lee ),임하원 ( Hawon Lim ),오윤찬 ( Yunchan Oh ),김성아 ( Seong-a Kim ) LH 토지주택연구원 2021 LHI journal of land, housing, and urban affairs Vol.12 No.4
이 연구는 제주도의 공공와이파이 정책의 실효성을 알아보기 위해 입지특성과 이용에 영향을 미치는 요인들에 대한 분석을 진행하였다. 공공와이파이 사용시간을 종속변수로 인구요인, 입지요인, 기타요인으로 구분하여 공공와이파이 설치 지점(AP) 반경 100m를 대상으로 공간회귀분석을 진행하였다. 분석결과 거주인구 수, 근무자 수, 방문자수 등 인구요인은 모두 공공와이파이 사용시간과 밀접한 상관성을 갖는 것으로 나타났다. 또한 버스 정류장 수 및 개별 공시지가, 토지이용 혼합도, AP 설치기간 역시 공공와이파이 사용시간과 밀접한 상관성을 갖는 것으로 나타났다. 반면에 용도별 건축물 수, 건축물 연면적, 관광지 수의 경우 공공와이파이 사용시간과 음의 상관성이 존재하는 것으로 나타났다. 분석 결과로부터 제주도 공공와이파이에 대한 보다 적극적인 홍보가 필요하며, 접속을 위한 편의성을 개선할 필요가 있음을 확인하였다. This study investigates the effectiveness of Jeju’s public Wi-Fi policy for which the key factors of public Wi-Fi use and location characteristics are analyzed. Spatial regression analysis was conducted within a 100 m radius of public Wi-Fi access points. In the analysis, the dependent variable was public Wi-Fi usage time while independent variables included demographic factors, location factors, and other factors. The findings reveal that demographic factors such as the number of residents, the number of workers, and the number of visitors had a close correlation with the use of public Wi-Fi. In addition, the number of bus stops and land prices of each parcel, land use mix, and AP installation period had a positive correlation with the use of public Wi-Fi. On the contrary, the number of buildings by use, the total floor area of buildings, and the number of tourist attractions had negative correlations with public Wi-Fi usage time. These findings provide policy implications that more active publicity on Jeju’s public Wi-Fi is needed and the convenience for access needs to be improved.
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
