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심태섭(Tae-Seob Shim),이상인(Sang-In Lee),윤상구(Sang-Goo Yoon),김재철(Jae-Chul Kim) 한국정보기술학회 2022 Proceedings of KIIT Conference Vol.2022 No.12
본 논문에서는 화소처리(point operations) 기법의 자연상수(e, Euler Number)를 이용한 UDTF(User Definition Transformation Frunction)를 제안한다. 제안된 함수는 ‘비교적 낮은 화소값을 갖는 객체와 객체와 경계를 파악하기 힘든 이미지’에 대하여 객체 검출을 위한 이진화전 처리 과정으로 히스토그램 스트레칭과 히스토그램 평활화와 비교할 때 우수한 전처리 성능을 보여준다. In this paper, we propose a UDTF(User Definition Transformation Function) using the natural constant (e, Euler Number) of the point operation technique. The proposed function is a pre-binarization process for object detection for objects with relatively low pixel values and images whose boundaries are difficult to recognize, and shows excellent pre-processing performance compared to histogram stretching and histogram equalization.
고용량 스테로이드로 치유된 Henoch-Schonlein 자반증의 회장 말단부 궤양 1예
최원호 ( Won Ho Choi ),김남훈 ( Nam Hoon Kim ),정은숙 ( Eun Sook Jung ),윤상구 ( Sang Goo Yoon ),박준섭 ( Jun Sup Park ),배원기 ( Won Ki Bae ),김경아 ( Kyung Ah Kim ),이준성 ( June Sung Lee ),문영수 ( Young Soo Moon ),김한성 ( Han 대한소화기학회 2007 대한소화기학회지 Vol.50 No.5
Henoch-Schonlein purpura (H-S purpura) is a systemic small-vessel vasculitis involving skin, joint, gastrointestinal tract, and kidney. It is characterized by the classic tetrad of abdominal pain, arthralgia, typical rash, and renal involvement. All of these clinical findings can occur in any order and at any time over several days to weeks. Gastrointestinal manifestations such as abdominal pain, melena, or hematochezia occur in 45-85% and preceed skin lesions upto 40% in H-S purpura. However, endoscopically proven gastrointestinal lesion is rare because majority of involved sites are small intestine. We report a case of Henoch-Schonlein purpura with terminal ileal ulcer, healed after treatment with high dose steroid, proven by colonoscopy. (Korean J Gastroenterol 2007;50:324-327)
윤상구,김민환,정은숙,한금현,곽이경,조종래,엄태현,김의석 대한감염학회 2007 감염과 화학요법 Vol.39 No.4
삼일열 말라리아는 일반적으로 경미한 임상경과를 거치며, 열대열 말라리아와 달리 뇌형말라리아, 폐부종, 신부전등의 치명적인 합병증을 일으키지 않는 것으로 알려져 있다. 저자들은 특이한 과거력이 없던 건강하던 성인이 국내에서 삼일열 말라리아에 걸린 후 발작과 쇼크가 발생하여, 항말라리아 약제와 대증치료로 치료된 증례를 경험하였다. Vivax malaria reemerged in the Republic of Korea in 1993. Vivax malaria is generally a benign disease with few severe complications. Even in the worldwide literature, there is only a small number of case reports on severe complications in vivax malaria. We report a unique case of P. vivax infection complicated by seizure and shock. A 58 year-old male showed generalized tonic-clonic seizure and shock after P. vivax infection. The species of malarial parasite was identified using peripheral blood film examination and polymerase chain reaction (PCR). He successfully recovered after treatment with hydroxychloroquine.
대량 혈변을 동반한 면역 기능이 정상인 환자에서 발생한 거대세포바이러스 대장염 1예
윤상구,김남훈,김종훈,이석현,박준섭,배원기,김경아,이준성,문영수,김한성 인제대학교 2007 仁濟醫學 Vol.28 No.-
Cytomegalovirus (CMV) colitis is more frequent in immunocompromised patients those with acquired immunodeficiency syndrome (AIDS), malignant disease, steroid therapy and inflammatory bowel disease. However, CMV colitis can occur rarely in the immunocompetent individuals. We report a case of CMV colitis, manifested by massive hematochezia in immunocompetent patient, healed after gancyclovir treatment, proven by colonoscopy.