쇄골 중간부 골절후 불유합 및 지연 유합의 원인

윤정로,심재익,김택선,이성종,김영배,김학준,안국환,장재영,홍명표 대한골절학회 2002 대한골절학회지 Vol.15 No.4

쇄골 중간 1/3 부위의 골절은 치료 결과가 양호하여 보존적 치료가 원칙적으로 받아 들어지고 잇으며 불유합에 대한 빈도도 낮은 것으로 되어 있다. 그러나 최근 전위 및 단축의 정도가 심할 경우 높은 불유합의 결과와 불량한 임상 결과를 보고하고 있어 이런 예에 대해선 수술적 치료를 권장하고 있다. 저자들은 단축 및 전위의 정도와 불유합의 연관성을 알아보고자 하였다. 연구 대상 및 방법 : 1993년 2월부터 2002년 1월까지 본원에 내원 했던 성인 중간부 쇄골 골절 환자 194명 중 완전 전위를 보인 78례를 조사하여 이중 63례를 대상으로 분석하여 후 향적 연구를 시행하였다. 4개월 추시 후에도 방사성 사진상 유합 소견이 관찰되지 않으면 불유합의 유의성을 알아보고자 하였다. 결 과 : 63례 중 불유합 및 지연 유합을 소견을 보인 환자는 15(23%)례였다. 골유합을 보인 48례의 단축은 평균 8.6㎜(2㎜-17㎜)였고, 전위는 평균 9.7㎜(2-22㎜)였다 .불유합 및 지연 유합을 보였던 15례에서 단축은 평균 14.5㎜(3㎜-37㎜), 전위는 평균 17.3㎜(4-25㎜)였다. 18㎜이상 단축이 있었던 경우 불유합의 발생과는 통계학적으로 유의성을 나타내었고(Fisher's exact test, p<0.01), Chi-square test상 16㎜ 이상의 전위를 보였던 경우 불유합 발생과 통계학적으로 의미가 있었다(p<0.01). 결 론 : 쇄골 골절 특히 중간 1/3의 골절은 비교적 보존적 치료에 결과가 좋은 것으로 되어 있으나, 전위 및 단축이 심한 경우 불유합에 대한 가능성이 높이 때문에 보다 경과 관찰시 유합의 진행이 없으면 적극적인 치료를 고려해야한다. Purpose : Because the prognosis of the mid 1.3 clavicle fracture is good, the conservative treatment with a figure of 8 bandage is the gold standard and the nonunions are rare. However, recently surgical treatment is recommended when the shortening and displacement is severe because of the high nonunion rate and the poor clinical result. This study was undertaken to evaluate that the shortening and displacement at fracture site are associated with the development of nonunion. Materials and Methods : We analysed the 194 fractures of mid 1/3 clavicle in adults which had been treated conservatively from February 1993 to January 2002 and did the retrospective study. Of these, 78 cases were originally in the middle third of the clavicle and had been completely displaced. We reviewed 63 of these cases. The shortening and displacement at the fracture site was measured on the initial roentgenogram. And the analysis of the patients' chart was done for another predisposing nonunion factors. Nonunion and delayed union are considered to be present when there has been little or no progression of clinical or radiographic healing at a minimum of 4 months after injury. Results : 15 of the 63 cases had developed nonunion.. The average 8.6㎜(2㎜-17㎜) shortening and average 9.7㎜(2-22㎜) in the union patients. The average 14.5㎜(3㎜-37㎜) shortening and average 17.3㎜(4-25㎜) in the nonunion patients. We found that initial shortening ≥18㎜(Fisher's exact test, p<0.01) and initial displacement ≥ 16㎜(Chi-square test. p<0.01)at the fracture site were significantly associated with the development of nonunion. Conclusion : The conservative treatment with figure-80-bandage is the gold standard in the clavicle middle one third fracture. However, the nonunion is commonly occurs in the cases of more of severely shortened and displaced fractures. If there are no signs of callus formation and the patient complains of pain after several week, osteosynthesis should be considered.

테니스 포핸드시 밀어치기와 때려치기 타법의 운동학적 분석

윤양진,정미라,서국웅,이훈식,황명숙,강영택,윤길환 釜山大學校 附設 體育科學硏究所 1999 體育科學硏究所 論文集 Vol.15 No.-

This study consists in clarifying the meaning of various angles and velocity, and two types of the stroke of a pushing shot and hitting shot through the three-dimensional image analyses among the factors of exercise. To attain the purpose of such studies, the result of experiment and analysis for each of three athletes of boys and girls in high school and three persons in general came to the conclusion as follows; 1. The last motion of a group of A having a command of a follow shot showed greatly, compared with two groups of B and C, and this showed that a group of A took a rectilinear motion greatly to gain power and two group of B and C took a rotary motion greatly to gain speed. 2. A group of A having a command of a pushing shot move body weight forward from behind and give the first consideration to a rectilinear motion, and two groups of B and C having a command of the stroke of hitting shot used the turning of the shoulder and the waist and gave much weight to a rotary motion than a rectilinear one. 3. The position of the hitting point of a group of A having a command of a pushing shot turned out to be the waist, and that of the hitting point of two groups of B and C, the chest, and namely this showed that the position of the hitting point was decided according to the form of the stroke and pictures of various kinds. 4. In impacting, the speed decreased, for the power was controled to keep an accurate timing of stroke just before impacting

Dynamic Resizing on Active Warps Scheduler to Hide Operation Stalls on GPUs

Yoon, Myung Kuk,Oh, Yunho,Kim, Seung Hun,Lee, Sangpil,Kim, Deokho,Ro, Won Woo IEEE 2017 IEEE transactions on parallel and distributed syst Vol.28 No.11

<P>This paper conducts a detailed study of the factors affecting the operation stalls in terms of the fetch group size on the warp scheduler of GPUs. Throughout this paper, we reveal that the size of a fetch group is highly involved for hiding various types of operation stalls: short latency stalls, long latency stalls, and Load/Store Unit (LSU) stalls. The scheduler with a small fetch group cannot hide short latency stalls due to the limited number of warps in a fetch group. In contrast, the scheduler with a large fetch group cannot hide long latency and LSU stalls due to the limited number of fetch groups and the lack of memory subsystems, respectively. To hide various types of stalls, this paper proposes a Dynamic Resizing on Active Warps (DRAW) scheduler which adjusts the size of a fetch group dynamically based on the execution phases of applications. For the applications that have the best performance at LRR (one fetch group), the DRAW scheduler matches the performance of LRR and outperforms TL (multiple fetch groups) by 22.7 percent. In addition, for the applications that have the best performance at TL, our scheduler achieves 11.0 and 5.5 percent better performance compared to LRR and TL, respectively.</P>

개에서 이중 결찰법을 통한 동맥관 개존증의 완치 예

윤헌영,정순욱,박희명,박철,정만복,김준영,한현정,황민,노병국,박상혁,장하영,박정윤 한국임상수의학회 2004 한국임상수의학회지 Vol.21 No.1

A ten months old, female Yorkshire terrier weighing 2.88 kg referred to veterinary teaching hospital of college of veterinary medicine, Konkuk University because of syncope, cough and dyspnea. First hematological and serum chemical test revealed thrombocytopenia, mild anemia, and increase of concentration of ALP (195 U/L). On 57 days later, second hematological and serum chemical test revealed polycythemia, increase of concentration of ALP (211 U/L), and Tchol (387 mg/dl). Right atrium enlargement, main pulmonary artery bulge and cardiomegaly (VHS = 11.5) were observed in radiographic findings. Ultrasonographic images showed both right and left ventricular dilation and turbulent flow between the descending aorta and the main pulmonary artery in color Doppler imaging. ECG showed left ventricular enlargement, SA block, and electrical alternant. Thoracotomy was performed through left fourth intercostal incision under isoflurane anesthesia. Patent ductus arteriosus was double ligated with 1-0 silk. Cough and dyspnea disappeared on 5 days after operation. Turbulent flow was not found in color doppler imaging of ultrasonography on 10 days after operation. Ten months later after the operation, syncope could not exist any more.

Controlled infiltration profile of SiC coating layer on graphite by Si vapor deposition reaction

Kuk-Jin Hwang,Si-Young Bae,Kyoung-Ho Kim,Yoon-Cheol Lee,Jung-Tae Hwang,Heesoo Lee,Seong Min Jeong,Myung-Hyun Lee 한양대학교 세라믹연구소 2019 Journal of Ceramic Processing Research Vol.20 No.2

SiC-coated graphite was successfully fabricated at different temperatures (1300-1600 oC) through a silicon vapor depositionreaction (Si-VDR) process. Si powder was used for the Si source of the SiC coating layers. When Si powder was evaporatedat high temperature near the melting point of bulk Si, Si gases are moved and changed into Si liquid at the surface of thegraphite. The high-temperature process facilitated the formation of SiC coating layers on the graphite. The microstructural,mechanical, and thermal oxidation properties of the coated graphite were investigated.

관개량이 토양수분과 콩 생육에 미치는 영향

윤광식 ( Yoon Kwang-sik ),한국헌 ( Han Kuk-heon ),최수명 ( Choi Soo-myung ),남상식 ( Nam Sang-sik ),이용직 ( Lee Yong-jik ),김진택 ( Kim Jin-taek ) 한국농공학회 2002 한국농공학회 학술대회초록집 Vol.2002 No.-

In order to investigate effect of irrigation on soil moisture and soybean growth, a experimental plot, which was shielded from precipitation was established. Four different irrigation rates were applied and soil moisture variations were monitored with TDR. Soybean yield and product quality are under scrutiny.

주암호 유입 소유역 오염부하 모니터링

윤광식 ( Yoon Kwang Sik ),최수명 ( Choi Soo Myung ),한국헌 ( Han Kuk Heon ),조재영 ( Cho Jae Young ) 한국농공학회 2001 한국농공학회 학술대회초록집 Vol.2001 No.-

Runoff and nutrient concentrations were monitored to identify pollutant load characteristics of a sub watershed in the Jooam lake. Observed concentrations of T-N and T-P were 1.445 ~ 3.980mg/ ℓ and 0 - 0.273mg/ ℓ, respectively. Runoff load of T-N, T-P by single storm occurred June 24th 2001 contributed 55% of T-N and 41% T-P of total pollutant load during study period.

Radio Receiver Requirements for Coexistence with Various Wireless Devices in 2.4GHz ISM-band

Yong-Kuk Park,Hae-Moon Seo,Yeon Kuk Moon,Won-Gi Jeon,Kwang-Ho Won,Myung-Hyun Yoon,Jun-Jae Yoo 대한전자공학회 2005 대한전자공학회 학술대회 Vol.2005 No.12

주암호 유역의 총인과 총질소 부하 특성

윤광식 ( Yoon Kwang-sik ),한국헌 ( Han Kuk-heon ),최수명 ( Choi Soo-myung ),정재운 ( Jung Jae-woon ),조재영 ( Cho Jae-young ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-

A subwatershed within the Lake Juam was monitored to identify hydrologic and water quality characteristics. Rainfall record was collected and flow rate measurement and water quality sampling were conducted periodically at the watershed outlet. Water quality of storm period was worse than that of base flow period. Nutrient loading from the watershed was governed by only a few storms during study period. Nonpoint source pollution was identified major problem for water quality management in Juam Lake.

영산강 IV단계 사업지구 내 밭관개 실태조사

윤광식 ( Yoon Kwang-sik ),한국헌 ( Han Kuk-heon ),최수명 ( Choi Soo-myung ),김진택 ( Kim Jin-taek ),이용직 ( Lee Yong-jik ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-

To devise better development plan, survey was conducted about current Farmer's irrigation Practice on upland in the Youngsan River Irrigation Project District IV. Major upland crops are garlic and onion in this region. Currently, upland irrigation is conducted using ground water. It is found that irrigation interval is 2-3 day for dry-field rice and 3 -7 days for other crop, in general. Whole day is required to irrigate for many farmers due to lack of facilities and water source. Farmers have no intention to change staple crops even after completion of Irrigation Project of Youngsan River District IV.