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변상훈(Sang-Hoon Byun),좌동경(Dongkyoung Chwa) 대한전기학회 2013 전기학회논문지 Vol.62 No.12
This paper proposes the range and velocity of the object estimation method using a moving camera. Structure and motion (SaM) estimation is to estimate the Euclidean geometry of the object as well as the relative motion between the camera and object. Unlike the previous works, the proposed estimation method can relax the camera and object motion constraints. To this end, we arrange the dynamics of moving camera-moving object relative motion model in an appropriate form such that the nonlinear observer can be employed for the SaM estimation. Through both simulations and experiments we have confirmed the validity of the proposed estimation algorithm.
CMI와 THI에 의한 서울시내 개인택시 실내환경 근무 운전기사의 건강영향 평가 연구
손종렬(Jong-Ryeul Sohn),변상훈(Sang-Hoon Byun),노영만(Young-Man Roh),김윤신(Yoon-Shin Kim) 한국실내환경학회 2005 한국실내환경학회지 Vol.1 No.2
This study was performed to investigate the health status of 600 owner-driver of taxi in Seoul City during from August 1, 2003 to February 28, 2004. The prevalence of subjective symptoms were surveyed by a general health questionnaires such as Todai Health Index (THI) and the Cornell Medical Index (CMI). In the THI health check table, prevalence of the complaints of mental subjective symptom by age was high in the items of fabrication (L), digestion (C), and aggressiveness (F) from 31 to 40 years old drivers and mental subjective symptom by age was high in all items except for tiredness (I), melancholia (N), and hypersensitivity (P) for the 60 years old drivers and showed in the items of melancholia (N) and hypersensitivity (P) for the 40 years old. From the complaints of mental and physical subjective symptoms about work satisfaction in the THI health check table, the strong dissatisfaction showed in the all items except for eye and skin trouble (B). All items except hypersensitivity (P) showed dissatisfaction in prevalence of complains of mental and physical subjective symptoms about work satisfaction in the CMI health check table. From the complains of mental and physical subjective symptoms on salary satisfaction in the THI health check table, the taxi driver who earn the salary of 1 million won showed statistically significant symptom of eye and skin trouble (B) and showed high tendency in all items except for respiratory (A) and digestion (C) systems. It is suggested that the appropriate health control for owner-driver of taxi should be applied to reduce the prevalence of complaints that showed mainly in the irregular working time and sleeping disorders.