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방문건강관리사업 대상 노인의 구강건강 관련 삶의 질과 관련 요인
이근유 ( Keun Yoo Lee ),조영식 ( Young Sik Cho ),임순연 ( Soon Ryun Lim ) 한국치위생과학회 2015 치위생과학회지 Vol.15 No.3
The aim of this study was to investigate the relationship between the oral health status of elderly under visiting health care and their oral health-related quality of life. The subjects were 300 elderly under visiting health care program over 65 years old in Asan city and they were interviewed. The result showed that average Geriatric Oral Health Assessment Index (GOHAI) score was 37.36 and the lowest scored question was ``never satisfied with the oral condition``. In GOHAI related to oral health behaviors, unmet dental treatment experience was statistically significant (p<0.001). In overall GOHAI, number of remaining teeth (p<0.001) and the age had statistical significance and men had higher score in pain and discomfort (p<0.05), under age of 74 limited function factors score was high (p<0.01). The number of remaining teeth had statistical significances in most factors except pain and discomfort (p<0.001). The factors affecting GOHAI were age (p<0.05), number of remaining teeth (p<0.001) and perceived health state (p<0.001). In order to improve oral health-related quality of life of elderly receiving visiting oral health care services, it is necessary to increase denture support by securing budgets and developing oral health promotion programs at the local government level.
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격자형 용접선 추적을 위한 용접 이동로봇의 모델링 및 제어
이근유(Gun You Lee),서진호(Jin Ho Suh),오명석(Myung Suk Oh),김상봉(Sang Bong Kim) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4
This paper presents the motion control of a mobile robot with are sensor for lattice type welding. Its dynamic equation and motion control method for welding speed and seam tracking are described. The motion control is realized in the view of keeping constant welding speed and precise target line even though the robot is driven along a straight line or corner. The mobile robot is modeled based on Lagrange equation under nonholonomic constraints and the model is represented in state space form. The motion control of the mobile robot is separated into three driving motions of straight locomotion, turning locomotion and torch slider controls. for the torch slider control, the proportional integral derivative (PID) control method is used. For the straight locomotion, a concept of decoupling method between input and output is adopted and for the turning locomotion, the turning speed is controlled according to the angular velocity value at each point of the corner with range of 90 constrained to the welding speed. The proposed control methods are proved through simulation results and the results have proved that the mobile robot has enough obility to apply the lattice type welding line.
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