상안면부 골절에 관한 방사선학적 비교 연구

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.

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.

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.

학술발표회 초록 : ( 에너지 / 환경 Poster 발표 ) ; 폐촉매로 부터 유가금속의 분리 , 회수

홍성우,김성훈,양종규,전성균,김종화,이성식 ( S . W . Hong,S . H . Kim,J . G . Yang,S . G . Jeon,J . H . Kim,S . S . Lee ) 한국화학공학회 1994 추계학술발표회 Vol.- No.-

임질의 임상적 고찰 - 제 6 보 : Kanamycin과 Fortified Penicillin G의 남성 단순임질 치료효과의 비교 -

홍성우(Sung Woo Hong),김중환(Joong Hwan Kim) 대한피부과학회 1983 大韓皮膚科學會誌 Vol.21 No.3

Although penicillin still remains the drug of choice in the treatment of gonorrhoea in many countries, treatment failures are becoming more and more coramon. Recently, the prohlem cauaed, by antibiotic resistant strains of N. gnorrhoeae has been aggravated by appearance of penicillinase producing N. gonorrheeae. Good results were reported with the use of spectinomycin, cefuroxime and efotaxime. These drugs are, as yet, quite expensive. A lower cost regimen has to be sought. In this study, the effect of fortified penicillin G was compared with kanarnycin in the treatment of uncomplicated male gonorrhoeae. The subjects were 446 rnale patients with uncomplieated gonocoacal urethritis at VD clinic of ChoongKu Public Health Center in Seoul between June and November, 1981. The patients are assigned randomly to one of the regimens. Among 181 patients treated with kanamycin, 2. 0 gm, IM, 148 recovered with 27 (19%) postgonococcal urethritis (PGU) and 39(21,6%) failed. Among 168 patients treated with fortified penicillin G, 6 mega-units IM, plus probenecid, l. 0 gm, PO., 100 recovered with 31(81%) PGU and 68(40. 5/o) failed. -countinue-

코르도바 모스크의 건축구성요소와 키블라 배치에 관한 연구

홍성우(Hong, Seong-Woo) 대한건축학회 2020 대한건축학회논문집 Vol.36 No.9

The creation of their own monumental architecture within a century after the birth of Islamic religion is unprecedented in the history of architecture. The identity of Islamic architecture was completed through the passage of thousands of years with the compromise of various regional cultures. The Great Mosque of Cordoba in Spain, embraced the architectural tradition in the conquered area, is one of the most monumental buildings that symbolized the excellence of their faith. In this paper, therefore, we investigated the relationship between the architectural components of the Great Mosque of Cordoba, which developed into a unique Islamic style and the regional architectural tradition. We also analyzed the factors that determine the direction of Qibla placement. The Great Mosque of Cordoba, a representative building of medieval architecture as well as of Islamic architecture, was analyzed as having the following characteristics by accommodating the local architectural elements and the method of constructing the Christian church during the extension period. The two-tier arcade system and the alternation of stone and brick colors of arches were induced with reference to the Roman aqueducts in Mérida, Spain, The Visigothic horseshoe arch has become a representative architectural element of Islamic architecture in Spain and North Africa since the construction of the Cordoba Mosque. They show how Muslims transformed the architectural elements of the conquered regions into their own original architectural forms. The interior of the building with decorating the three bays in front of the mihrab was extended in the longitudinal direction so that applied the hierarchical arrangement of Christianity. The cross-arch of the multifoil arch and mukarnas dome, which suggest to have influenced the development of the rib vault and point arch of the Gothic architecture, seems to be the result of the mutual exchange between Islam and Christianity. Finally, the qibla of the Cordoba Mosque is about 51° south of Mecca and does not face the Kabba. Because it is possible to measure the direction of the qibla since the 9th century, thus, they probably built the qibla wall according to the road direction of the Roman city as the method of Umayyad tradition.

시계열 해석을 이용한 팔 운동 근전신호의 기능분리

洪性宇(Sung-Woo Hong),南文鉉(Moon-Hyon Nam) 대한전기학회 1992 전기학회논문지 Vol.41 No.9

대장직장암에서 혈관내피성장인자 발현의 의의와 p53단백 과발현과의 상관관계

홍성우(Seong Woo Hong),이현철(Hyunchul Lee),강윤경(Yun Kyung Kang),나양원(Yang Won Nah),장석효(Surk Hyo Chang),백인욱(In Wook Paik),이혁상(Hyucksang Lee) 대한외과학회 2000 Annals of Surgical Treatment and Research Vol.59 No.1

Fluorescence Resonance Energe Transfer 현상을 이용한 센서의 개발

홍성우(Sung Woo Hong),조원호(Won Ho Jo) 한국고분자학회 2007 고분자 과학과 기술 Vol.18 No.4

실시간 멀티미디어 통신을 위한 의미 기반 채널 파워 할당 기법

홍성우(Sungwoo Hong),원유집(Youjip Won) 大韓電子工學會 2010 電子工學會論文誌-CI (Computer and Information) Vol.47 No.1

본 연구에서는 실시간 멀티미디어 서비스의 QoS를 향상시키기 위해 계층 통합 최적화 기법을 통한 새로운 파워 할당 기법을 소개한다. 각각의 패킷이 QoS에 미치는 영향이 다르므로, 항상 패킷 손실의 감소가 QoS의 향상으로 이어지지는 않는다. 본 연구에서는 패킷이 QoS에 미치는 영향을 정량화 하여 이를 바탕으로 파워를 할당하는 기법을 개발하였다. 다이내믹 프로그래밍 기법을 사용하여 파워소모를 최소화하면서 QoS를 극대화하는 적절한 파워 값을 발견하였으며, 실험을 위해 널리 공개된 비디오 클립을 사용하였다. 네트워크 시뮬레이터 (network simulator version 2)를 통하여 시뮬레이션을 수행하였으며, 성능 평가를 위해 클라이언트 단에 디코딩엔진을 삽입하여 원본 영상과 전송된 영상을 비교, PSNR을 도출하였다. 패킷 세만틱 정보를 기반으로 적절한 파워를 할당한 결과 기존의 기법에 비해 QoS가 크게 향상되는 것을 확인할 수 있었으며, 이는 본 논문에서 제안된 기법이 보다 중요한 패킷에 대한 차별적인 보호 기법이 적용된 결과임을 각 프레임 손실에 대한 조사로 알 수 있었다. 해당 기법의 적용을 통해 I 프레임의 경우 손실이 최대 29%에서 2%이내로 감소하는 것을 확인할 수 있었으며, 같은 결과를 나타낼 때, 파워 소모를 최대 약 20%까지 감소시키는 것을 확인할 수 있었다. In this work, we develop a novel channel power allocation method for the real-time multimedia over the wireless network environment. Since each frame has different effect on the user perceivable QoS, improving packet loss does not necessarily coincide with perceivable improvements in QoS. A new channel power control scheme is suggested based on the quantified importance of each frame in terms of user perceivable QoS. Dynamic programming formulation is used to obtain optimal transmit power which minimizes power consumption and maximizes user perceivable QoS simultaneously. The experiment is performed by using publicly available video clips. The performance is evaluated using network simulator version 2 (NS 2) and decoding engine is embedded at the client node, and calculated PSNR over the every frame transmitted. Through the semantics aware power allocation (SAPA) scheme, significant improvement on the QoS has been verified, which is the result of unequal protection to more important packets. SAPA scheme reduced the loss of I frame by upto 27% and reduced power consumption by upto 19% without degradation on the user perceivable QoS.