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주홍돈(Hong Don Joo),박상옥(Sang Wook Park),장직현(Jik Hyun Chang) 한국정보과학회 1993 한국정보과학회 학술발표논문집 Vol.20 No.2
본 논문에서는 변형된 정렬 문제로서, 정렬의 대상이 되는 원소와 각 원소에 주어진 왼쪽 한계값이 정렬된 후의 그 원소가 위치할 수 있는 자리를 제한하는 정렬 문제를 생각한다. Heap을 이용하여 문제를 해결하는 O(nlogn)의 시간복잡도를 가지는 순차 알고리즘은 이미 알려져있다. 여기에서는 주어진 문제를 해결하는 3가지의 병렬 알고리즘을 제시한다. 먼저 순차 알고리즘에서 Heap을 병렬화하여 O(logn)의 프로세서를 가지고 O(n)시간에 해결하는 병렬 알고리즘과 Heap을 이용하지 않는 알고리즘으로 O(n²/logn)의 프로세서를 가지고 O(logn)시간에 해결하는 병렬 알고리즘과 O(n)의 프로세서를 가지고 O(log²n) 시간에 해결하는 병렬 알고리즘을 제시한다.
131I-MIBG Scintigraphy 로 진단된 재발성 갈색 세포종
정동성,이귀래,한창완,조영삼,박운식,정윤형,주홍돈,박성기,김성환,김정례 ( Dong Sung Jung,Gwi Lae Lee,Chang Wan Han,Young Sam Cho,Woon Sik Park,Yoon Hyung Jung,Hong Don Joo,Sung Ki Park,Sung Hwan Kim,Jung Lyeu Kim,Dae Hyuk Moon ) 대한핵의학회 1994 핵의학 분자영상 Vol.28 No.3
Pheochromocytomas are catecholamine producing tumors of neuroect,odermal origin, and may arise wherever chromaffin cells are located. They are rare but potentially lethal and amenable to surgical cure. Once a clinical diagnosis has been established, localization becomes of importance to direct surgical approach. MIBG scintigraphy is the initial localizing procedure of choicc, due to its ability tn screen the entire body, especially in the detection of ex(raadrenal and recurrent pheochromocytoma. A case of recurrent extraadrenal pheochromocytoma diagnosed by I-MIBG scintigraphy is presented wit,h review of the literature.
고령의 호흡기 질환 환자에서 상부 위장관 내시경 검사시 폐기능 장애 정도에 따른 산소 포화도의 변화
정윤형(Yun Hung Jung),이진석(Jin Suk Lee),한종학(Jong Hak Han),김재홍(Jae Hong Kim),정동성(Dong Sung Jung),이귀래(Gwi Lae Lee),한창완(Chang Wan Han),박운식(Woon Sik Park),조영삼(Young Sam Cho),주홍돈(Hong Don Joo),두창준(Chang Joon D 대한내과학회 1995 대한내과학회지 Vol.49 No.2
N/A Objectives : We performed following experiment in order to find the relationship between impairment of pulmonary function test (PFT) and oxygen desaturation during upper gastrointestinal endoscopy examination among the elderly patients. Methods : Pulmonary function test and ABGA (arterial blood gas analysis) were performed before endoscopy. Arterial oxygen saturation and pulse rate were monitored with pulse oximeter before endoscopy until 5minutes its completion. We classified the population by control group and patients group by pulmonary function test. we classified patients group by mild group, moderate group and severe group (Table 2). Results : 1) Oxygen saturation was decreased significantly among all of groups, the most decreased within 1 minutes after insertion endoscopy and recovered soon before endoscopic completion. 2) The duration of worst SaO2 did not correlated with the pulmonary function test impairment. 3) The time of endoscopy did not correlated with decrease in SaO2 during endoscopy 4) There is decreased oxygen saturation in mild group, but no significant change from control group. 6) Pulse rate did not correlated with pulonary function test impairment. Conclualon : Oxygen saturation was decreased all groups in elderly populaton during upper gastro-intestinal endoscopy especially moderate or severe groups, therefore, incidence of cardio-pulmonary disease is increased. To prevent cardio-pulmonary complication, we should detect oxygen desaturation early by using pulse oximeter during upper gastrointestinal endoscopic procedure in moderate or severe group. If needed, termination of the procedure, oxygen supplement or assisted ventilation minimize cardiopulmonary complication.