난소의 호산성 투명세포암종 - 1예의 보고 -

하창원,고재수,명나혜,조경자,박상윤,김미경,장자준 대한병리학회 1992 Journal of Pathology and Translational Medicine Vol.26 No.5

복강경을 이용한 대장 부분 절제 시행 1예

박재갑,서경석,정회원,김선회,오용석,송인성,박용현 대한대장항문학회 1993 Annals of Coloproctolgy Vol.9 No.1

수소손상 검출과 평가기술

원순호,현양기,이종오,조경식,이재도 한국비파괴검사학회 2002 한국비파괴검사학회지 Vol.22 No.1

산업현장에서 수소는 설비를 손상시킬 수 있는 주원인 중의 하나이며, 종종 설비를 파괴시키는 사고를 발생시킨다. 수소손상에 의한 결정립계의 공동 또는 미세균열은 강재의 파괴인성과 강도를 떨어뜨리는 원인이 되고, 따라서 과거 제한적인 방법으로 수소손상을 평가하기 위한 시도가 수행되었다. 본 연구에서는 초음파를 적용하여 수소손상을 검출하고 평가하기 위한 연구를 수행하였다. 미세조직시험에 의해 확인된 시험편을 이용하여 초음파의 속도와 감쇠계수를 구한 결과, 수소손상에 의해서 초음파 속도는 감소하고 감쇠는 현저하게 증가하는 것으로 나타났다. 이러한 결과를 바탕으로 수소손상을 검출하기 위한 신뢰성 있는 평가법을 제시하였다. The presence of hydrogen in industrial plants is a source of damage. Hydrogen attack is one such form of degradation and often causing large tube ruptures that necessitate an immediate shutdown. Hydrogen attack may reduce the fracture toughness as well as the strength of steels. This reduction is caused partially by the presence of cavities and microcracks at the grain boundaries. In the past several techniques have been used with limited results. This paper describes the application of an ultrasonic velocity and attenuation in hydrogen damage. Ultrasonic tests showed a decrease in wave velocity and an increase in attenuation. Such results demonstrate the potential for ultrasonic nondestructive testing to quantify damage. Based on this study, reliable recommendation is suggested to detect hydrogen attack.

한국인 성장기 아동에서 Angle씨 2급 1류 부정교합자의 골격 특징

경희문,권오원,김유경,성재현 대한치과교정학회 1989 대한치과교정학회지 Vol.19 No.3

This study was designed to investigate the difference of teeth and craniofacial complex between normal occlusion and Angle's Class II, div. 1 malocclusion in korean childern. The sample was divided into 2 groups, the 66 subjects with normal occlusion and 96 subjects with Angle's Class II, div.1 malocclusion in both sexes. The results obtained were as follows: 1. No significant differences were observed in ant. cranial base length & flexure(saddle angle) between normal occlusion & cranial Angle's Class II, div. 1 malocclusion group, but posterior cranial base length of Class II, div. 1 malocclusion group was larger than that of normal occlusion group. 2. No significant difference was observed in the anteroposterior position of Maxilla to cranial base between two groups, but mandibular position in Class II. div. 1 malocclusion was posterior and interior to that of normal occlusion. 3. The length of maxilla (ANS-PSN) was larger in Class II, div. 1 malocclusion than normal occlusion. The length of mandibular body(Go-Me) was nor differnet between Class II, div. 1 malocclusion and normal occlusion. 4. Maxillary incisor position of Class II, div. 1 malocclusion to cranial base was more protrusive than that of normal occlusion, but there was no difference in mandibular incisor position between two groups.

수면 다원검사상 정상인 단순 코골기 환자에서 레이저 수술의 임상적 효과

김경수,이정권,김성식,박국진,한재욱,김원석 대한이비인후과학회 1998 대한이비인후과학회지 두경부외과학 Vol.41 No.3

학교체육경영에 있어서 교사의 직무태도에 영향을 미치는 요인분석

원기승,김경호,김영재 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.2

The purpose of this paper two to find out elements which have an effect on teacher's behavior and job satisfaction/dissatisfaction on physical education services in the managerial organization. These elements were called "Determining Factors of Job Accomplishment", and divided into immanent and external side in job. The former was defined as a sense that teachers have directly throughout job accomplishment, and the latter meant the organizational context of teacher's job accomplishment. It was assumed that the relation between some organizational elements and teacher's behavior would be conditioned by contingency variables as follow: types of physical education service, sex. Data were collected from 138 teachers in elementary schools and lower secondary schools by questionnaires in the fall of 2003. The summary of the results was: 1) In every of service job immanent side affected the positiveness of job accomplishment behavior. 2) Any categories of job external side have no effect on teacher's behaviors in Club Service(C.S). While in Program Service(P.S.) 4 categories: teachers group, principal, chief of physical education teachers, physical education service, related to daily behavior. And in addition to these 4 categories well-filled material condition was important in Area Service(A.S.). 3) Female teacher was activated only by job immanent side, while male teacher's activity was influenced by both sides. It was suggested that as to organizational power, the male accepted more compliantly than the female. 4) High job satisfaction exalted the willingness to job accomplishment but job dissatisfaction did not have relation to in it every services. 5) About the same factors provided for job satisfaction and dissatisfaction in C.S. but determining factors of both feelings to job were different in P.S., that is, job immanent side and the policy of services contributed to job satisfaction, fully equipped social and physical conditions reduced dissatisfaction.

응급의료센터에서 신경색의 조기진단

최경호,오동렬,이원재,박규남,박승현,황두영,김형국,정시경,김영민,김세경 大韓應急醫學會 1998 대한응급의학회지 Vol.9 No.4

To evaluate appropriate diagnostic studies for renal infartion in emergency medical center, we analysed 33 patients of renal infarction treated in this hospital for last 8 years. Eleven patients, 4 trauma associated and 7 aortic disease associated patients were excluded. They are 11 males and 11 females with a mean age of 51 years. Fourteen came to the emergency medical center and seven came to the outpatient department, in the other one patient renal infarction was developed during hospitalization with other disease. On their past history they had hypertension in 9, valvular heart disease in 5, and diabetic mellitus in 4 patients. Abdominal or flank pain was noted in 17 of 22(77%). The other symptoms were vomiting, nausea, fever and so on. On microscopic examination of initial urine in hospital, 5 patients showed more than 10 red blood cells by high power field examination. The mean lactic dehydrogenase level was 1,239 I.U/L(normal range 218-472 I.U/L), while the mean aspartate aminotransferase and mean alanine aminotransferase were 51 I.U/L(normal range 13-36 I.U/L) and 44 I.U/L(normal range 5-33 I.U/L). Abdominal ultrasonography showed positive findings in 5 of 16(31%), of which 3 were confirmed by Doppler ultrasonography. In 18, computed tomography was done and all those showed positive findings of renal infarction(100%). In conclusion, it is important that identify the elevated lactic dehdrogenase level in case of any suspicion about renal infarction and confirm by computed tomography.

무선 애드 혹 기반 액티브네트워크상에서 QoS지원에 관한 연구

李基源,裵振勝,丁燦赫,金玄郁,李光培,姜景仁,朴京培,文泰洙,郭承郁,河載承 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-

Abstract - In this thesis, we propose a QoS supporting method on wireless ad hoc-based active network for improving reliability. On the loss of route path, the existing DSR routing protocol has several problems with wireless network communication because of decease of data reception rate and increase of network load. The proposed method improves reliability of data transfer by using functions of active network. That is, by using functions of active nodes and active packets, the proposed method supports QoS with reservation transfer method that saves data packets on transfer at intermediate nodes with lost path and then re-transmit the packets after route reconfiguration.

심실보조장치 이식의 새로운 수술기법-Korea University Technique-

선경,박성영,오혜정,신재승,이혜원,심환주,김형묵 제주대학교 인공심장이식연구소 2001 인공심장 연구 Vol.2 No.1

고려대학교 흉부외과에서는 심실보조장치 이식에서 흉골 재절개(re-sternotomy)에 따른 합병증과 사망률을 감소시키기 위하여 우측 개흉을 이용한 독자적인 수술법을 개발하였다 (KU technique). 다양한 동물모델과 사체실험 및 임상적용을 통해 안정성과 유용성을 확인하였으며, 향후 좌심 및 양심보조장치 이식에서 표준기법의 하나로 제안하고자 한다. We have developed a new surgical technique (KU technique) of right thoracotomy for cannulation of ventricular assist devices, which can lessen potential morbidity and morta1ity from re-sternotomy. The technique has been proved to be safe and efficient in various animal models, preclinical cadaver fitting test, and human application. We would like suggest KU technique as a part of standard in implantation of left ventricular or hi-ventricular assist devices.

탄소섬유강화수지의 섬유각에 따른 절삭저항에 관한 연구

이윤경,이재명,김원일 慶南大學校 附設 工業技術硏究所 1998 硏究論文集 Vol.15 No.2

신소재인 탄소섬유강화 플라스틱(CFRP)을 피삭재로 선삭가공을 통하여 섬유각의 변화에 따른 절삭저항에 관하여 관찰하였다. 절삭저항은 섬유각 절삭깊이가 클수록 증가하고, 섬유각 15˚ 90˚ 는 절삭속도 40m/min 이상에서 절삭저항이 작아지나, 섬유각 45˚ 60˚ 에서는 절삭속도 40m/min 이상에서 절삭저항이 급격히 증가함을 알 수 있었다. 이송분력이 주분력 배분력보다 거의 2배 가까이 큰것은 섬유의 각도가 클수록 섬유의 방향이 이송방향에 미치는 영향이 크기 때문이라고 생각 된다. CFRP의 최적가공조건은 섬유각 15˚절삭속도 60m min임을 알 수 있다. Carbon Fiber Reinforced Plastic(CFRP), one of the new materials, was investigated about cutting resistance according to the change of fiber angle through in turning Cutting resistance, increases as the fiber angle increases. At the fiber angle of 15˚and 90˚ cutting resistance decreases for the cutting speed more than 40m/min. At the fiber angle of 45˚ and 60˚ cutting resistance increases for the cutting speed less than 40m' min becomes nearly two times the principal force the direction of fiber largely influence upon feed direction. Optimum cutting condition of CFRP can be found to the fiber angle 15˚and cutting speed of 60m/min.