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여향순(H S Yeo),박홍배(H B Park),김정호(J H Kim),이상운(S W Lee),이승민(S M Lee),최병인(B I Choi),오원주(W J Oh),이상철(Sang Chul Lee) 대한소화기학회 1988 대한소화기학회지 Vol.20 No.2
N/A We studied the clinical features of 17 patients of Tb. peritonitis, 2 patients of gastric tuberculosis. 16 patoemts of intestinal tuberculosis and 16 patients of intestinal Tbc with Tb. peritonitis who had been admitted to Kwangju, Korea, from July 1985 to July 1987, The results are as following: 1) In Tb. peritonitis, age predominace was almostly same, but in intestinal Tb, woman was predominat (1:4.3) at 3rd, 4th decade. 2) Pulmonary Tb. was accompanied by following: Tb. peritonitis 47%, Gastric tuberculosis 100%, and intestinal Tb. with peritonitis 83%. So, this results recommened that pul. Tb was major cause of these disease but, the severity of Pul. Tb was not consist with incidence of these diseases. 3) After anti Tb. chemotherapy, clinical symptoms were improved more than 70% within 7 days. 4) 3 Tb. peritonitis patients (13%), 2 gastric Tb. patients (100%) and 8 intestinal Tb. patients were confirmed by peritoneal biopsy and endoscopic biopsy. 5) The most common colonscopic finding of intestinal Tb. was multiple ulcers with inflammatory polyposis (70%) and the common sites were inflammatory polyposis (70%) and the common sites were as following in orders: cercum (57%), ileum (57%), ascending colon (52%), descending colon (14%) and sigmoid colon (5%). 6) Ascites in Tb. peritonitis (17 case) and intestinal Tb. with peritonitis (6 case) was all exudative finding with more than 50% lymphocytes.
임의적 패킷 손실과 외란입력을 고려한 네트워크 제어 시스템의 H<SUB>∞</SUB> 제어기 설계
이태희(Tae H. Lee),박주현(Ju H. Park),권오민(Oh-Min Kwon),이상문(Sang-Moon Lee) 대한전기학회 2013 전기학회논문지 Vol.62 No.8
This paper considers the H∞ control problem for networked control systems(NCSs). In order to solve the problem which comes from discontinuous control signal in NCSs, an approach that discontinuous control signals treat time-varying delayed continuous signals is applied to achieve H∞ stability of NCSs. In addition, randomly occurring packet losses and disturbances are considered by introducing stochastic variables with Bernoulli distribution. Based on Lyapunov stability theory, a new stability condition is obtained via linear matrix inequality formulation to find the H∞ controller which achieves the mean square stability of NCSs. Finally, the proposed method is applied to a numerical example in order to show the effectiveness of our results.