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습열리(濕熱痢)로 변증한 궤양성 대장염 환자의 작약탕가미방(芍藥湯加味方) 치험 2례
이형호,최기숙,임동석,유형천,이영수,최창원,김희철,서철훈,Lee, Hyung-Ho,Choi, Ki-Suk,Lim, Dong-Seok,Ryu, Hyung-Chun,Lee, Young-Soo,Choi, Chang-Won,Kim, Hee-Chul,Seo, Chul-Hoon 대한한방내과학회 2006 大韓韓方內科學會誌 Vol.27 No.4
Ulcerative colitis, a diffuse inflammatory disease of the mucosal lining of the colon and rectum, is characterized by bloody diarrhea that waxes and wanes without apparent cause. In oriental medicine, Jakyaktang has been used to treat the disease, diagnosed as Damp-Heat dysentery. We prescribed Jakyaktang-gamibang to two patients who had suffered from ulcerative colitis diagnosed as Damp-Heat dysentery. The two patients were treated with Jakyaktang-gamibang and improved in consciousness of symptoms. We suggest that oriental medicine therapy is effective for treatment of ulcerative colitis.
자음양영탕이 Streptozotocin(STZ)로 유발된 생쥐의 고혈당에 미치는 영향(影響)
이형호,이영수,Lee, Hyung-Ho,Lee, Young-Soo 대한한방내과학회 2007 大韓韓方內科學會誌 Vol.28 No.3
Objectives : The aim of this study was to investigate the effect of Jaeumyangyung-tang(滋陰養榮場(JY), JA-0.65g/kg;JB-1.3g/kg) on hyperglycemic mice induced with streptozotocin(STZ). Methods : The experiment operated for 6 weeks. The rats were divided into 3 groups : diabetic group(control group), diabetic group treated with JA(0.65g/kg) for 6 weeks, and diabetic group treated with Jb(1.3g/kg) for 6 weeks. Results : In the STZ-induced diabetic group, blood glucose levels significantly increased as well as the loss of body weight. The levels of serum glucose decreased significantly (p<0.05 or p<0.01) in the JA and JB groups compared with the control. According to a tolerance test, intraperitoneal glucose was ameliorated in the JA and JB groups. The blood urea nitrogen (BUN) and creatinine levels slightly decreased. Histologic analyses of the pancreases revealed that the ${\beta}-cells$ on Langerhans' islets were destroyed by STZ, but the ${\beta}-cell$ mass was larger in the JY than in the control mice. Conclusions : These results indicate that JY can exert beneficial effects on diabetes. preservation of in vivo ${\beta}-cell$ function and regeneration of ${\beta}-cell$ dysfunction by STZ.
Caerulein으로 유발된 흰쥐의 급성 췌장염에 대한 은회반총산(銀茴蟠?散)의 효과
이형호,김인수,신민구,이영수,Lee, Hyung-Ho,Kim, In-Soo,Shin, Min-Gu,Lee, Young-Su 대한한방내과학회 2013 大韓韓方內科學會誌 Vol.34 No.3
Objectives : In this study, we aimed to investigate the effect of Eunhoebanchong-san (EBS) on caerulein-induced acute pancreatitis (AP) by detecting oxidative stress markers and performing histopathological examination. Methods : Thirty adult male Sprague-Dawley rats were divided into five groups as follows: normal (NOR), caerulein-induced (CON), caerulein+EBS (130 mg/kg, EA), caerulein+EBS (260 mg/kg, EB) and caerulein+EBS (520 mg/kg, EC) groups. Pancreatic tissues of rats from all groups were removed for apoptosis, and light, and electron microscopic examination. Blood of rats from all groups was obtained for oxidative stress markers and pathological examination. Pancreatic oxidative stress markers were evaluated by the measurements of serum amylase, and interleukin-6 (IL-6) levels were determined spectrophotometrically. Results : The ratio of pancreas/body weight increased significantly in the CON compared with the NOR, but decreased significantly in the EA, the EB, the EC groups compared with the CON. Caerulein administration resulted in a significant increase in amylase, but EBS reduced the levels of these enzymes. Interleukin-6 (IL-6) levels increased significantly in CON compared with NOR, but reduced in EA, EB, and EC group at 24 hrs. In the observations of optical microscopy and electron microscopy, the experimental groups showed significant decreases in pancreatic tissue inflammation, edema, vacuolization, necrosis compared to the control group. Altogether, this indicates EBS is potentially capable of limiting pancreatic damage produced during AP by restoring the fine structure of acinar cells and tissue. Conclusions : We concluded that EBS may have beneficial effects in the treatment of caerulein-induced AP.
기계학습 알고리즘을 이용한 Curation 서비스 구현
이형호(Hyung Ho Lee),이학재(Hak Jae Lee),김태수(Tae Su Kim),김미현(Mi Hyun Kim) 한국스마트미디어학회 2020 스마트미디어저널 Vol.9 No.4
본 논문은 방대한 정보가 있는 자치단체 및 공공기관 웹 사이트에서 사용자가 원하는 정보서비스를 자동으로 추천하는 시스템을 제공하며, 본 시스템은 데이터를 수집하고 전처리하는 SiiRU 콘텐츠관리시스템을 기반으로 데이터 수집 방법을 정의하고, 수집된 데이터를 기계학습기반의 협업 필터링 알고리즘을 통해 사용자에게 큐레이션서비스(콘텐츠 및 메뉴)를 제공한다, 또한 본 논문에 사용된 데이터는 2019년에 수집된 약 1백만 건의 데이터를 바탕으로 구현하였다. 이렇게 분석된 데이터는 사용자들이 편리하게 볼 수 있도록 클라우드 태그 서비스나 추천메뉴를 제공하여 쉽게 접근할 수 없는 중요한 정보를 제공할 수 있으며, 자치단체 및 공공기관에 본 서비스를 실현할 수 있는 환경 구성도 제공한다. This paper is conducted for automatically recommending and providing information services desired by users on websites of local governments and public institutions with vast amounts of information, In this system, we defined a method of collecting data based on the SiiRU CMS system that collects and preprocesses data, and a study that provides curation services (contents and menus) to users through a collaborative filtering algorithm based on machine learning. Also, the data used in the paper is conducted based on about 1 million data collected in 2019. The analyzed data can provide important information that cannot be easily accessed by providing a cloud tag service or recommended menu for users to conveniently view, and the environment configuration that can realize this service to local governments and public institutions is also provided.
Robust and Non-fragile H∞ Controller Design for Tracking Servo of Blu-ray disc Drive System
이형호(Hyung Ho Lee),김준기(Joon Ki Kim),김원기(Woon Ki Kim),조상우(Sang Woo Jo),박홍배(Hong Bae Park) 대한전자공학회 2008 電子工學會論文誌-SC (System and control) Vol.45 No.3
본 논문에서는 blu-ray 디스크 드라이버의 트랙킹 서보시스템에 대하여 플랜트와 제어기의 불확실성을 보상하는 견실비약성 H∞ 상태궤환 제어기 설계방법을 제안한다. 플랜트와 제어기의 불확실성을 매개변수화 선형행렬부등식(PLMI : parameterized linear matrix inequality)을 이용하여 구조화된 불확실성의 형태로 표현하며, Lyapunov 함수를 이용하여 구조적인 제어기의 이득섭동을 고려한 견실비약성 H∞ 상태궤환 제어기가 존재할 충분조건 및 제어기 설계방법을 PLMI의 형태로 제안한다. 또한, 완화기법(relaxation technique)을 통하여 PLMI를 유한개의 LMI의 형태로 변환하여 견실하고 최적화된 제어기 이득과 제어기 섭동 범위를 계산하고, 모의실험을 통해서 제시된 제어기의 타당성 및 견실성(robustness)과 비약성 (non-fragility)을 검증한다. In this paper, we describe the synthesis of robust and non-fragile H∞ state feedback controllers for linear systems with affine parameter uncertain tracking servo system of blu-ray disc drive, as well as static state feedback controller with polytopic uncertainty. Similarity any other control system, the objective of the track-following system design for optical disc drives is to construct the system with better performance and robustness against modeling uncertainties and various disturbances. Also, the obtained condition can be rewritten as parameterized linear matrix inequalities (PLMIs), that is, LMIs whose coefficients are functions of a parameter confined to a compact set. We show that the resulting controller guarantees the asymptotic stability and disturbance attenuation of the closed loop system in spite of controller gain variations within a resulted polytopic region.