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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.
Modified Widman Flap과 Modified Flap 후의 치료효과에 관한 임상적 비교연구
홍성우,박영채,이광수,유형근,신형식,Hong, Sung-Woo,Park, Young-Chae,Lee, Kwang-Soo,You, Hyung-Keun,Shin, Hyung-Shik 대한치주과학회 2000 Journal of Periodontal & Implant Science Vol.30 No.1
Periodontal surgery can be directed to remove the irritants from the tooth surface and reduce the periodontal pocket. The purpose of this study is to compare the clinical effects after between modified Widman flap and modified flap in periodontal patients. Ninety six molar area teeth of 9 patients were used. One of sextants performed a modified Widman flap, while the other side performed a modified flap. After initial periodontal therapy, the following measurements prior to surgery(baseline) were taken : pocket depth, gingival recession, clinical attachment level, tooth mobility, bleeding on probing. Also these measurements were taken at 4 weeks, 8weeks, and 12 weeks after surgery. Significant decrease of pocket depth was shown in both techniques, and the degree of decrease was significant in modified flap than modified Widman flap at 12 weeks. Significant increase of gingival recession was shown in both techniques, and the degree of increase was significant in modified Widman flap than modified flap at 4 weeks, 8 weeks, and 12 weeks. Significant attachment gain was shown in both techniques, and the degree of increase was significant in modified flap than modified Widman flap at 4 weeks, 8 weeks, and 12 weeks. Significant increase of tooth mobility was shown in both techniques at 4 weeks, but the decrease of tooth mobility was shown at 12 weeks. Greater decrease of bleeding on probing was shown in both techniques at 4 weeks. Modified flap was better than modified Widman flap in the decrease of gingival recession and the attachment gain. These results indicate that modified flap operation is better than modified Widman flap operation in the effect of periodontal treatment.
그래픽 시스템과 관계 데이타 베이스 시스템간의 인터페이스를 위한 버젼관리를 지원하는 Data Model의 설계
홍성우(Sung-Woo Hong),최윤철(Yoon-Chul Choy) 한국정보과학회 1987 한국정보과학회 학술발표논문집 Vol.14 No.2
Computer graphics 응용 소프트웨어는 몇가지 구성요소로 이루어진다. 그중 하나가 data modeling 요소이다. 그러나 graphics 응용에 따라 data modeling 방법이 상이하기 때문에 다른 관련된 graphics 응용의 data model과의 통합이나 데이타공유가 어렵다. 또한 시간과 버젼에 따라 조금씩 변하는 picture 의 효율적 관리가 요구된다. 이러한 문제점을 해결하기 위하여 DBMS 와 interactive graphics system 간의 interaface 모델을 제시한다. 이 interface는 complex object 의 계층적 구조를 이해하고 version control 을 효율적으로 지원할 수 있는 semantic data model 을 핵심으로 하고 있다.
홍성우(Sung Woo Hong),이창우(Chang Woo Lee),김중환(Joong Hwan Kim),유태연(Tae Yun Yoo) 대한피부과학회 1983 대한피부과학회지 Vol.21 No.5
Livedo vasculitis or vasculitis of atrophie blanche is a clinical entity which can be distinguished from cutaneous vasculitis by distinctive pathology and immunopathologic study. A 18-year-old female with erythematous, telangiectatic, purpuric or hyperpigmented patches, intermingled with white atrophic ivory patches on her legs of 3 years duration was seen in June 3, 1982. The histologic examination of an atrophic patch showed proliferation and occlusion of blood vessels in the upper dermis with patchy atrophy of the epidermis. The immunopatbologic features of an atrophic patch revealed deposits of IgM, Ca and fibrin as a definitive immunofluorescence vessel pattern. This suggests that the livedo va.sculitis or vasculitis of atrophie blanche may he considered one of the immune vasculitides. This patient had received aspirin and persantine for 4 months, and moderate therapeutic effects could be noticed.
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.