http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김성덕,임승운 대한마취과학회 1988 Korean Journal of Anesthesiology Vol.21 No.2
The circulatory responses to acute isovolemic hemodilution were studied in nine mongrel dogs in hypoxic (FIO2=0.15) environment. The animals were bled 20 ml/kg of blood. The shed blood was replaced by equivalent amounts of low molecular weight dextran (LMWD). Hemodynamic measurements and calculations were performed in control normoxic period, hypoxic period before bleeding, hypoxic period after bleeding and after hemodilution with LMWD. By hemodilution, Hb and Hct were decreased from 13.6±0.8gm/dl and 41±2% to 12.9±0.9gm/dl and 21±2%, respectively. Hypoxia itself did not cause any hemodynamic changes. Bleeding caused significant increases in SVR (60%) and PVR (77.9%), and resulted in decreases in CI (40.0%), TI (32.7%) and PCWP (2.0%) compared with the data in control period. Hemodilution reversed gemodynamic changes induced by bleeding. PVR returned to normal and SVR was rather decreased by 24.2%. CI, PCWP and CVP were increased by 25.4%, 6.0%, and 37.5%, respectively. The parameters such as HR and RPP which might be related to oxygen consumption were decreased by 10.6%, compared with control data. This study demonstrated that, in spite of lowered arterial oxygen content during hemodilution, tissue oxygen supply and cardiac performance might be well maintained by combined effects of decreased afterload and oxygen consuming factors, and increased preload. In conclusion, acute isovolemic hemodilution with LMWD might be a safe tolerable method in the aspects of circulatory respones in hypoxic dogs.
태권도장 지도자의 역할모호성, 역할갈등 및 직무만족의 관계: 더미변수를 사용한 관장과 사범간의 분석
김성덕,박동영,최영준 한국스포츠학회 2015 한국스포츠학회지 Vol.13 No.2
The purpose of this study was to investigate the relationships among perceived role ambiguity, perceived role conflict and percieved job satisfaction of Taekwondo masters and instructors:Analysis by using Dummy variable between Masters and Instructors. Using a convenience sampling method, a total of 219 responses were collected from the Taekwondo Instructors who participated in the job training session hosted by Korea Taekwondo Association. Descriptive statistics, exploratory factor analysis, t-test, correlations analysis and dummy variable regression were executed using SPSS Window 21.0 Version With a series of data analysis, the researchers found that 1) the group of Taekwondo instructors showed the significantly higher role conflict. and 2) the group of Taekwondo instructors significantly affected perceived role conflict.
탄소성(彈塑性) 지반(地盤)위에 놓인 원형평판(圓形平板)의 유한요소(有限要素) 해석(解析)
김성덕,장승필,Kim, Sung Deuk,Chang, Sung Pil 대한토목학회 1987 대한토목학회논문집 Vol.7 No.4
Boussinesq 지반형(地盤型)의 탄소성체지반(彈塑性體地盤)위에 놓인 원형평판(圓形平板)이 축대칭하중(軸對稱荷重)을 받았을 경우의 거동을 파악하기 위하여 8절점(節點) 등매개변수요소(媒介變數要素)를 사용한 유한요소해석(有限要素解析) 방법(方法)을 이론적(理論的)으로 발전시키고 이를 수행하기 위한 컴퓨터 프로그램을 개발하였다. 이론(理論)의 정당성을 입증하기 위해 모형실험을 수행한 결과 지반(地盤)의 항복조건으로 Mohr-Coulomb 강복이론(降伏理論)을 적용한 수치해(數値解)의 결과(結果)와 실험결과(實驗結果)가 근사함을 확인하였다. Mohr-Coulomb의 파괴이론(破壞理論)을 적용한 비선형해석(非線型解析)을 수행한 예제(例題)의 결과로 부터, 지반의 소성영역(塑性領域)이 원판(圓板)의 녹단부근(綠端附近)에서 발생하기 시작하여 중심축둘레로 연결되었을 때 접지압(接地壓)이 급격히 변하여 전단파괴(剪斷破壞)의 위험성(危險性)이 있다고 판단되고 이 때의 외부작용하중(外部作用荷重)을 임계하중(臨界荷重)으로 정의하였다. In this study, the finite element method using 8-node isoparametric element is developed theoretically and simulated to see the deformation of soil and plate, when the circular plate resting on Boussinesq's soil type is loaded axisymmetrically. The results of numerical analysis using the Mohr-Coulomb yield criterion, and experimental analysis are approximative, assuming that soil is elasto-plastic medium. The paper shows that the plastic zone of soil medium is displayed at the near the edge of plate at the first place; when the plastic zone of soil medium is linked around central axis, the external load is termed by critical load, and then the contact pressure changes abruptly, in this case it is approved to be the risk of shear failure.
김성덕,문구현,방사익,오갑성,현원석 대한성형외과학회 2003 Archives of Plastic Surgery Vol.30 No.6
Arteriovenous malformation(AVM) is an abnormal communication between an artery and a vein and often causes significant hemorrhage or cosmetic problems. Treatment of these vascular anomalies is hazardous and has high incidence of recurrence. A multidisciplinary team approach is required in the assessment and treatment of the lesion, and preoperative angiography with superselective embolization followed by resection is required. The authors performed nine cases of the wide resection of the congenital arteriovenous malformation(7 on the head and neck, 2 on the trunk) between April 1998 and January 2002. All patients underwent preoperative embolization with n-butyl 2-cyanoacrylate at 1 week before operation. Preoperative embolization resulted in significant devascularization of the AVM thus leading to minimal bleeding during operation. After resection, direct closure were performed in 6 cases, skin graft in 1 case, free transverse rectus abdominis musculocutaneous flap in 1 case, and tissue expansion using tissue expander in 1case. There was one complication related with embolization procedure in temple AVM patient. No recurrence has been recognized during the follow-up period, which ranges from 16 to 61 months. Preoperative embolization with n-butyl 2-cyanoacrylate and surgical resection of the AVM provided excellent long-term palliation in patients with congenital AVM.