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황현중 ( Hyunjung Hwang ),백명기 ( Myong Ki Baeg ),김범수 ( Pumsoo Kim ),김유진 ( Yu Jin Kim ),강석형 ( Seok Hyung Kang ) 대한소화기학회 2018 대한소화기학회지 Vol.72 No.4
Splenic abscess is a rare disease that generally occurs in immunocompromised patients. It is difficult to distinguish between splenic abscesses and cysts using imaging studies, especially if they are asymptomatic. A 50-year-old asymptomatic man who had received steroid therapy for underlying rheumatoid arthritis was referred to a university hospital due to presence of several splenic cysts, with the largest being 3.5 cm in diameter. Percutaneous aspiration was performed, and fluid analysis showed cysts infected by extended- spectrum, beta-lactamase-producing Escherichia coli. The patient was treated with ertapenem for four weeks, and the lesion disappeared on follow-up imaging studies. Splenic abscess should be included as a differential diagnosis of splenic cystic lesions in immunocompromised patients. (Korean J Gastroenterol 2018;72:209-212)
혈액종양 : 불응성 혈전성혈소판감소자반증의 성공적인 저용량 리툭시맙 치료 1예
송경환 ( Kyoung Hwan Song ),홍준식 ( Junshik Hong ),황현중 ( Hyunjung Hwang ),강은경 ( Eunkyung Kang ),박진희 ( Jinny Park ),안정열 ( Jeong Yeal Ahn ),이재훈 ( Jae Hoon Lee ) 대한내과학회 2015 대한내과학회지 Vol.89 No.6
Thrombotic thrombocytopenic purpura (TTP) is a clinical syndrome characterized by micro-angiopathic hemolytic anemia, thrombocytopenia, fever, renal disorders, and neurological manifestations. Its clinical course is rapid and the mortality rate is high if untreated or relapse occurs. Previous studies reported that rituximab, a monoclonal antibody for CD20 surface antigen on B lymphocytes, may be effective in treating idiopathic TTP that is refractory to plasma exchange or relapses after remission. A 27-year-old Vietnamese man presented with fever and fatigue starting 3 days earlier, which was diagnosed as idiopathic TTP. To overcome his poor responsiveness to combined therapy using steroids and plasma exchange, rituximab was considered. In the current case, the patient was treated with a lower dose of rituximab, instead of the conventional 375 mg/m2/week, and achieved successful remission. (Korean J Med 2015;89:709-713)
스마트 온실 지능형 추론 플랫폼을 위한 환경 데이터의 영향력 분석
임종태(Jongtae Lim),최지현(Jihyeon Choi),최환용(Hwanyong Choi),정상준(Sangjun Chung),이서희(Seoheui Lee),황현중(Hyunjung Hwang),RETITI DIOP EMANE Christopher,김윤아(Yuna Kim),유재수(Jaesoo Yoo) 한국콘텐츠학회 2023 한국콘텐츠학회논문지 Vol.23 No.7
최근 스마트 온실의 자동 제어가 중요하게 연구되고 있다. 스마트 온실의 자동 제어를 위해서는 최적의 환경을 정의하는 것이 중요하다. 하지만 스마트 온실 최적의 환경은 다양한 요인들에 의해 변경되기 때문에 이를 고려한 스마트 온실 제어 모델이 필요하다. 본 논문에서는 스마트 온실 지능형 추론 플랫폼을 위한 환경 데이터의 영향력 분석을 수행한다. 이를 위해 스마트 온실 자동 제어를 위한 스마트 온실 지능형 추론 플랫폼을 소개한다. 또한 기존 연구 분석을 통해 어떤 환경이 작물의 생장에 영향을 주는 요인으로 연구되었는지 분석한다. 분석된 내용을 바탕으로 스마트 온실 데이터와 기계학습 방법을 통해 작물 생장 예측 모델을 구축하고 각 환경에 대한 영향력을 평가한다. 평가 결과, 온도, 습도, CO₂가 중요한 환경 변수로 분석되었으며 시계열 학습 방법들이 모델을 생성하는데 유용함을 확인했다. Recently, an automatic control of smart greenhouses have been studied importantly. To automatic control of smart grreenhouses, it is important that the definition of the suitable environment for crop’s growth. However, suitable environment is changed according to various reason. So, we need to consider the various environmental data to design the smart greenhouse control model. In this paper, we analyze the influence of environmental data for the smart greenhouse intelligent inference platform. First, we introduce the smart greenhouse intelligent inference platform. In addition, we analyze the existing researches to derive the environmental data which is used to predict the crop’s growth. We construct crop’s growth prediction models and evaluate their influence based on the derived environmental data. As a result, temperature, humidity, and CO₂ were analyzed as important environmental variables, and it was confirmed that time series learning approaches were useful in constructing models.