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이은주 ( Eun Ju Lee ),오유진 ( Eu Jin Oh ),정택조 ( Taek Jo Jeong ),신민경 ( Min Kyung Shin ),김낙인 ( Nack In Kim ) 대한피부과학회 2010 대한피부과학회지 Vol.48 No.9
Pyogenic granuloma (lobular capillary hemangioma) is a very common benign vascular lesion that frequently appears as a red to purple colored papule or polypoid mass. Any cutaneous or mucous membrane surface may be affected, they are rarely found intravascular or subcutaneous area. A 67-year-old female presented with a single, 0.5×0.5 cm sized movable subcutanous nodule on the right arm. A biopsy specimen showed multilobulated angiomatous nodule consisted of proliferative capillaries with fibrous septum in the subcutaneous layer. The tumor cells were positive for CD31, CD34, vimentin and smooth muscle actin. The lesion was excised and pyogenic granuloma was given as diagnosis by histopathological evaluation. The Subcutaneous type of pyogenic granuloma is rare but it should be part of the differential diagnosis of solitary nodule of extremities. (Korean J Dermatol 2010;48(9):776~779)
이정택(Jeong-Taek Lee),오윤상(Yoon-Sang Oh),조근식(Geun-Sik Jo) 한국정보과학회 1998 정보과학회논문지(B) Vol.25 No.6
동적 재스케줄링(Reactive Scheduling)은 스케줄링 요소의 변화로 발생되는 초기 스케줄링의 결과에 대한 불일치성을 제거하여 초기 스케줄링의 결과를 유지 보수하는 것이다. 이러한 동적 재스케줄링을 위한 시스템에서는 초기 스케줄링을 유지하는 측면에서 초기 해의 최소 변화, 부분 해, 속도 등의 융통성을 요구한다. 그러나 융통성들 간의 복잡성 때문에 균형(Trade_Off)을 이루면서 동적 재스케줄링의 융통성을 유지하는 것은 매우 어렵다. 기존의 동적 재스케줄링에서는 일반적으로 지역 탐색(Local Search)에 의한 재스케줄링 기법을 적용하였지만 초기 해의 변화의 국부적 최소화(Local Minimum) 문제로 동적 재스케줄링의 융통성을 보증할 수 없었다. 본 연구에서는 기존의 동적 재스케줄링의 기법 중 지역 탐색의 재스케줄링 시에 발생할 수 있는 국부적 최소화를 해결하기 위하여 제약조건 완화기법(Constraint Relaxation)을 이용한 전역 탐색(Global Search) 기법을 설계 및 구현하고 전역 탐색 시에 여러 가지 탐색 순서를 실험하여 효율적인 결과를 제공하는 탐색 순서를 제시한다. As scheduling environment is dynamically changed, inconsistency happens in an initial scheduling solution. A reactive scheduling is necessary for removing this inconsistency and to adjust an initial scheduling solution. For reactive scheduling getting efficiency, it needs the following flexibilities; a minimal revision of initial scheduling solution, partial solution and response time. In conventional reactive scheduling, generally reactive scheduling has used the local search mechanism. But since the local search mechanism could lead to a local minimum of an initial scheduling revision, this method could not guarantee flexibilities of reactive scheduling. In this study, for solving a local minimum problem appeared by the local search mechanism, new reactive scheduling mechanism with constraints relaxation and global search, are designed and implemented. Techniques, which can produce an efficient solution, are proposed with experiment in several searching techniques.
조향정,오정택,김강득,김헌수,Jo, Hyang-Jeong,Oh, Jung-Taek,Kim, Gang-Deuk,Kim, Hun-Soo 대한세포병리학회 2007 대한세포병리학회지 Vol.18 No.2
A case of Burkitt lymphoma diagnosed through fine needle aspiration cytology is described, A 66-year-old man presented with lymphadenopathy on the right cervical neck and axillary area. An ultrasonogram and CT scan for the cervical neck showed a multiple variable sized lymphadenopathy with pericapsular invasion and necrotic foci, Fine needle aspiration cytology (FNAC) of the cervical lymph nodes revealed very cellular and necrotic smears consisting of diffusely scattered intermediate monotonous round cells, tingible body macrophages and many mitotic figures. Histological features of the excised lymph nodes showed the classic morphological features of Burkitt lymphoma. Recognition of the characteristic cytological features can suggest the possibility of Burkitt lymphoma.
황규홍(Kyu Hong Hwang),이정택(Jeong Taek Lee),윤진일(Jin Il Yun),허승오(Seung Oh Hur),심교문(Kyo Moon Shim) 한국농림기상학회 2001 한국농림기상학회지 Vol.3 No.4
Cooling rate shows the highest as about 0.7℃/hr on spring season and the lowest as about 0.3℃/hr on september at plain place. The correlation coefficient between net radiation and cooling rate from sunrise to sunset was 0.63, It became higher to 0.90 when the wind speed decreased lower than 0.5m/sec, and it decreased as the wind speed increased. On a clear and calm day, cooling rates were observed as 1.4℃/hr on the plain (site 1, 2, 3), 1.2℃/hr on the slope (site 4, 5) and 0.6℃/hr on the top of mountain (site 6). In condition of the wind speed is 1.2~2m/sec on a clear and calm day and the temperature on the top of mountain is lower than that of slope and plain, the temperature on the slope (site 4, 5) was increased unlike our expectation.
강동백 ( Dong Baek Kang ),오정택 ( Jung Taek Oh ),박원철 ( Won Cheol Park ),이정균 ( Jeong Kyun Lee ) 대한소화기학회 2010 대한소화기학회지 Vol.56 No.3
Anisakiasis usually occurs in the stomach and can easily be diagnosed by digestive tract endoscopy as opposed to enteric anisakiasis which is very rare and difficult to be diagnosed definitively. The most important and useful tool in diagnosing enteric anisakiasis is obtaining an accurate patient history of having eaten raw fish before the onset of symptoms. We report a case of small bowel obstruction caused by acute invasive enteric anisakiasis. A 60-year-old woman visited the emergency room suffering from sudden abdominal pain. She had eaten raw fish 1 day before the onset of symptom. Radiologic studies showed small bowel obstruction. However, no definitive cause could be found. An emergency laparotomy revealed edematous and dilated proximal jejunum and a focal stenosis of the distal jejunum. Segmental resection of the jejunum was performed, and histopathological examination revealed enteric anisakiasis. The patient was discharged on the 7th day after surgery following an uneventful course of recovery. (Korean J Gastroenterol 2010;56:192-195)