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鄭東星,金亨晳,邊永壽,李英淳 최신의학사 1973 最新醫學 Vol.16 No.1
Letterer-Siwe's disease is originated from some reticuloendothelial system with Hand Schuller-Chri?stian's disease and eosinophilic granuloma, the causes are not known yet exactly and the clinical manifestations are various but the pathological changes are so similar in each other that are very interesting in orthopedic fields. A case of Letterer-Siwe's disease is experienced and reported. A 15 months old Korean girl was complained tenderness on thoracolumbar vertebra with progressive kyphotic change following high fever and diarrhea. Two to three days prior to admission, purpura was begining to be appeared on her lower abdomen. The roentgenological study were revealed clear round, radiolucent bony destructions in the skull and marked similar osteoporotic or radiolucent changes in postero-lateral aspect of the right 8th rib with expansion of the cortex but lung was clear. The vertebral bodies of the 10th, 12th thoracic and 1st lumbar were flattened, and various sized and irregular radiolucent cystic lesions were noted in the both iliac bones and medullary region of the right upper femur. The biopsy was showed in microscopically well differentiated, proliferated and many 15-25i sized histiocytes, eosinophilic rich cytoplasm without lipid vacuoles. Consequently the diagnosis of Letterer?Siwe's disease was conformed by microscopic examination.
ATM 망에서 버퍼의 임계값 예측을 위한 퍼지 규칙 기능 검증에 관한 연구
정동성,이용학 한국통신학회 2004 韓國通信學會論文誌 Vol.29 No.8C
본 논문에서는 ATM 망에서의 효율적인 트래픽 제어를 위하여 언어적인 규칙과 퍼지 추론부로 구성되는 퍼지로직에서 퍼지 규칙을 생성하였다. 퍼지 규칙 내부에 포함된 제어 파라메터들은 주어진 성능 함수를 최소화하도록 학습된다 즉, 발생된 저, 고순위 트래픽 도착 비율에 따라 퍼지집합 이론을 통하여 추론한 후 그 비퍼지화값으로 접속된 트래픽에 대해 버퍼에서의 임계값을 제어하도록 하였다. 또한, 생성된 퍼지 규칙의 타당성을 검증하기 위하여 MATLAB6.5에서와 온라인 빌드업으로 규칙에 대한 실험결과를 보인다. 그 결과, 고, 저 트래픽 도착 비율에 따라 효율적으로 버퍼에서의 임계값이 제어됨을 확인하였다. In this thesis, we created a Fuzzy rule in a Fuzzy logic that are Fuzzy logic which is composed of linguistic rules and Fuzzy inference engine for effective traffic control in ATM networks. The parameters of the Fuzzy rules are adapted to minimize the given performance index in both cases. In other words, the difuzzification value controls the threshold in the buffer to arrival ratio to traffic priority (low or high) using fuzzy set theory for traffic connected after reasoning. Also, show experiment result about rule by MATLAB6.5 and on-line bulid-up to verify validity of created Fuzzy rule. As a result, we can verify that threshold value in buffer is efficiently controlled by the traffic arrival ratio.
ATM망에서 서버의 서비스율 예측을 위한 퍼지 규칙 기능 검증에 관한 연구
정동성,이용학 대한전자공학회 2004 電子工學會論文誌-TC (Telecommunications) Vol.41 No.10
본 논문에서는 ATM 망에서의 효율적인 트래픽 제어를 위하여 언어적인 규칙과 퍼지 추론부로 구성되는 퍼지 로직에서 퍼지 규칙을 생성하였다. 퍼지 규칙 내부에 포함된 제어 파라메터들은 주어진 성능 함수를 최소화하도록 학습된다. 즉, 전체 트래픽 도착율과 버퍼의 점유율에 따라 퍼지집합 이론을 통하여 추론한 후 그 비퍼지화값으로 접속된 트래픽에 대해 서버에서의 서비스율을 제어하도록 하였다. 또한, 생성된 퍼지 규칙의 타당성을 검증하기 위하여 MATLAB6.5에서와 온라인 빌드업으로 규칙에 대한 실험결과를 보인다. 그 결과, 전체 트래픽 도착율과 버퍼의 점유율에 따라 효율적으로 서버에서의 서비스율이 제어 됨을 확인하였다. In this thesis, we created a Fuzzy rule in a Fuzzy logic that are fuzzy logic which is composed of linguistic rules and Fuzzy inference engine for effective traffic control in ATM networks. The parameters of the Fuzzy rules are adapted to minimize the given performance index in both cases. In other words, the difuzzification value controls the service rate in the server to total traffic arrival ratio and buffer occupancy ratio using fuzzy set theory for traffic connected after reasoning. Also, show experiment result about rule by MATLAB6.5 and on-line bulid-up to verify validity of created Fuzzy rule. As a result, we can verify that service ratio in server is efficiently controlled by the total traffic arrival ratio and buffer occupancy ratio.
股 動脈撮影에 依한 各種 下肢 疾患의 血行 循環에 對한 觀察
鄭東星 우석대학교 의과대학 1971 우석의대잡지 Vol.8 No.1
Femeral arteriography has taken on new diagnostic importance with the advant of the use of arterial implantations in the treatment of selected cases of segmental arterial occlsusion, Auther has performed total 18 cases single arteriogram on the 5 cases of Buerger's diseases, 10 cases of trauma on the lower limb and contast 3 cases of normal individuals, and obtained the following results. 1) In Buerger's disease, the levels of vascular obstruction were the proximal part of femoral artery in 2 cases, the distal part of femoral artery in 1 case and the popliteal artery in 2 cases: 2) In traumatic vascular obstruction, only 1 case was noted on the femoral artery. 3) The side reactions of arteriography were very rare, only one case of mild nausea was observed.
p-ANNA 강양성을 보인 제1형 자가면역성 간염 1예
정동성,정제혁,권병표,안상준,장진석,한상영,김경희 대한내과학회 2004 대한내과학회지 Vol.66 No.3
38세 여자에서 강양성의 p-ANNA 수치를 보여 ERCP로 원발성 경화성 담관염을 배제 후 제1형 자가면역성 간염으로 진단을 하였다. p-ANNA와 자가면역성 간염의 관계에 대해서는 추후 연구가 필요할 것으로 보인다. Autoimmune hepatitis (AIH) is an undissolved inflammatory process of the liver characterized by the periportal hepatitis on histological examination and serum autoantibody. AIH seems to be partly responsible for chronic liver disease of unknown etiology in Korea. Perinuclear-Antineutrophil nuclear antibody (p-ANNA) are detected in up 세 88% of patient with primary sclerosing cholangitis (PSC) and presence of p-ANNA in PSC makes them a reasonable diagnostic maker in conjuction with standard diagnostic test. But p-ANNA in AIH is rare and it's role remain unclear. We report the first case of 39 year-old-female patient with AIH type-1 with p-ANNA strong positivity.