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저속 후방 추돌 자원자 실험을 통한 두부와 경부의 동작분석
홍성우,박원필,박성지,유재호,공세진,김한성,Hong, Seong Woo,Park, Won-Pil,Park, Sung-Ji,You, Jae-Ho,Kong, Sejin,Kim, Hansung 한국자동차안전학회 2012 자동차안전학회지 Vol.4 No.2
The purpose of this research is to obtain and analyze dynamic responses from human volunteers for the development of the human-like mechanical or mathematical model for Korean males in automotive rear collisions. This paper focused on the introduction to a low-speed rear impact sled test involving Korean male subjects, and the accumulation of the motion of head and neck. A total of 50 dynamic rear impact sled tests were performed with 50 human volunteers, who are 30-50 year-old males. Each subject can be involved in only one case to prevent any injury in which he was exposed to the impulse that was equivalent to a low-speed rear-end collision of cars at 5-8 km/h for change of velocity, so called, ${\Delta}V$. All subjects were examined by an orthopedist to qualify for the test through the medical check-up of their necks and low backs prior to the test. The impact device is the pendulum type, tuned to simulate the crash pulse of a real vehicle. All motions and impulses were captured and measured by motion capture systems and pressure sensors on the seat. Dynamic responses of head and T1 were analyzed in two cases(5 km/h, 8 km/h) to compare with the results in the previous studies. After the experiments, human subjects were examined to check up any change in the post medical analysis. As a result, there was no change in MRI and no injury reported. Six subjects experienced a minor stiffness on their back for no more than 2 days and got back to normal without any medical treatment.
홍성우,고광준,Hong Seong-Woo,Koh Kawng-Joon 대한영상치의학회 1995 Imaging Science in Dentistry Vol.25 No.2
The subjects of this study consisted of 58 patients with Le Fort fractures, who were admitted to Chonbuk National University Hospital from Jan. 1988 to Oct. 1995. The author classified the maxillofacial fractures by Le Fort classification and examined the. incidence of Le Fort fractures by age, sex and etiology. The purpose of this study was to compare the imagings of conventional radiograms with those of computed tomograms and to aid in the diagnosis of patients with Le Fort fractures. The obtained results were as follows: 1. The Le Fort fractures occured mainly in 3rd and 4th decades, but there was no significant difference between decades. A ratio of men to women was 5.5 : 1. The major etiologic factors were traffic accident(69%), assault(14%) and fall-down(12%). 2. The most common type of Le Fort fracture was type I(49.3%). The numbers of Le Fort II, ill fractures were 41.3%, 9.4% respectively. And 8.6% were midsagittal splitting fractures. 3. The discontinuity and haziness of the maxillary sinus were easily detected by Waters' view. In skull PI A view, it was difficult to observe fractures due to overlapping of the other structures, but the haziness of the maxillary sinus was sometimes observed. 4. In Le Fort fracture, the fracture pattern of orbit, the wall of maxillary sinus, nasal bone and pterygoid plate were more easily detected in computed tomograms than in conventional radiograms.
홍성우(Hong Seong-Woo) 한국지역사회학회 2012 지역사회연구 Vol.20 No.1
This paper examines determinants of attach rate and wage differentials of local university women graduates' school to work transition comparing with Seoul metropolitan ones. We use GOMS(Graduates Occupational Mobility Survey) 2008 produced by Korea Employment Information Service. Three employment attach rates (employed, employed by the other employers, and employed by giant companies) are estimated by probit model. Wage function is estimated by OLS, and Oaxaca decomposition analysis is used for wage differentials. Our main findings are as follows. Firstly, we can not find any difference of three attach rates of school to work between local university women graduates and Seoul metropolitan ones, different from raw rates. Secondly, location of attended university is statistically significant in making wage differentials. This means LUWG can not get jobs with the same pay as Seoul metropolitan ones. Thirdly, we decompose wage differentials and find that the effects of different coefficients are larger than those of different individual characteristics between two groups. It implies the possibility of university location wage discrimination. Fourthly, efforts of students and universities for getting good jobs are effective in improving employment success rates and wages.
홍성우(Seong Woo Hong),나간채(Kahn Chae Na),형광석(Gwang Seok Hyoung) 한국지역학회 1998 지역연구 Vol.14 No.1
We analysed the determinants of part-timer labor demand and supply in Kwangju. The findings of this paper are as follows; First, firms employ part-timer workers in the unskilled or skilled jobs not demanding much training cost. There are two reasons for firms to employ part-time workers: labor cost cut and flexible employment adjustment. Estimated wage differential is 40% not including fringe benefits differential. Second, we find lots of married women to want part time jobs. The more probably married women choose part-time work, the younger and the less educated they are, and the less kids and the less other income they have.
홍성우(Hong Sung-Woo),홍주현(Hong Ju-Hyun),고성석(Go Seong-Seok) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)
Recently, high rise combined residential commercial facilities are supplied in the metropolitan area and even in small towns in order to provide houses in large quantity and to utilize land effectively. This study is a part of the directional study which can make progress in feasibility study of combined residential commercial facility more objective and rational. The object of the study is to find development in the existing feasibility evaluation stage and to deduce influential elements for the upcoming feasibility valuation, with investigating and analyzing important factors through a preceding study and case studies.