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박진남,김방순,고우석,최호철,김병옥,조혜제 대한피부과학회 1999 大韓皮膚科學會誌 Vol.37 No.7
Multicentric reticulohistiocytosis(MR) is a rare systemic disease of unknown etiology, characterized by destructive polyarthritis and mucocutaneous eruptions in various locations. In most cases rapidly progressive destructive polyarthritis is the presenting symptom, followed by typical skin eruptions. Skin lesions are characterized clinically by erythematous to brownish nodular lesions on the face, periungual areas and the trunk. The biopsy demonstrating the characteristic granulomatous infiltration of multinucleated giant cells and histiocytes with a ground-glass appearance is diagnostic. We report a case of multicentric reticulohistiocytosis in a 57-year-old female patient, who had skin lesions with polyarthritis and cardiac problem. To our knowledge, this is the first case report in Korea.
박진남,김재현,이호인,Park, Jin Nam,Kim, Jae Hyeon,Lee, Ho In Korean Chemical Society 2000 Bulletin of the Korean Chemical Society Vol.21 No.12
$Mo/{\gamma}-Al_2O_3catalysts$ modified with Fe, Co, and Ni were prepared by impregnation method and catalytic activity for water gas shift reaction was examined. The optimum amount of Mo loaded for the reaction was 10 wt% $MoO_3$ to ${\gamma}-Al_2O_3.$ The catalytic activity of $MoO_3/{\gamma}-Al_2O_3was$ increased by modifying with Fe, Co, and Ni in the order of Co${\thickapprox}$ Ni > Fe. The optimum amounts of Co and Ni added were 3 wt% based on CoO and NiO to 10 wt% $MoO_3/{\gamma}-Al_2O_3$, restectively. The TPR (temperature-programmed reduction) analysis revealed that the addition of Co and Ni enganced the reducibility of the catalysts. The results of both catalytic activity and TPR experiments strongly suggest that the redox property of the catalyst is an important factor in water gas shift reaction on the sulfided Mo catalysts, which could be an evidence of oxy-sulfide redox mechanism.
컬러 특성을 이용한 실시간 동영상의 cut detection 기법
박진남,이재덕,허영,Park, Jin-Nam,Lee, Jae-Duck,Huh, Young 대한전자공학회 2002 電子工學會論文誌-CI (Computer and Information) Vol.39 No.1
멀티미디어 기기의 발전과 더불어 다양한 매체로부터 다양한 종류의 영상, 오디오, 텍스트 등의 정보가 난무하고, 이들 정보를 사용자의 요구에 따라 효과적으로 검색·관리를 위한 연구가 활발히 진행되어지고 있다. 실시간 연속 영상에서 내용이 연결되는 부분과 장면전환 등에 의해 내용이 바뀌는 부분을 자동 검출 가능하다면 적은 량의 데이터 내용 표현으로 영상 검색의 효율성을 증대시키는 효과를 가져 올 수 있을 것이다. 본 논문에서는 영상의 특성에 따른 실시간 Cut detection 기술을 제안하고 이 방법의 성능을 다양한 영상 데이터를 바탕으로 정확성 평가를 하였다. 그 결과 영상데이터의 컬러 특성에 관한 통계적인 특성 정보를 필요로 하는 기존의 컬러 히스토그램 방식과는 달리 본 방식은 각 프레임 영상의 색상 분포의 변화분에 의존하므로 어떤 종류의 영상 패턴에도 적용 가능한 robust한 방식이며, 실시간 입력영상의 cut detection 이 가능한 이점이 있음을 확인할 수 있었다. A study on image searching and management techniques is actively developed by user requirements for multimedia information that are existing as images, audios, texts data from various information processing devices. If we can automatically detect and segment changing scenes from real-time image sequences, we can improve an effectiveness of image searching systems. In this paper, we propose cut detection techniques based on image color distribution and we evaluated its performance on various real-time image sequences. Results of experiments show that the proposed method are robust on various image patterns than color histogram method using statistical informations of images. Also, these methods can be used for cut detection on real-time image sequences.