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동적 부하모델링 적용을 위한 유도전동기 수식적 모델 연구
손서은(SeoEun Son),조시훈(Si-Hun Jo),이수형(Soo-Hyung Lee),박정욱(Jung-Wook Park),송경빈(Kyung-Bin Song),조종만(Jong-Man Jo),이석무(Suk-Moo Lee) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.11
본 논문은 측정 기반 부하모델링 기법중 하나인 ZIP모델과 유도전동기의 병렬 결합에 의한 복합 부하모델 적용을 위한 유도전동기 수식적 모델의 단위법(pu) 표현에 관한 연구이다. 기존의 유도전동기 수식 모델에 의한 시뮬레이션 시의 문제점을 보완하여 명확한 수식 모델 표현을 제안하였다. 또한, 제안된 유도전동기의 수식적 모델에 의한 동적 시뮬레이션 결과를 PSS/E 시뮬레이션의 결과와 비교함으로써 해당 모델의 유효성을 검증한다.
손종렬,노영만,손부순,Sohn Jong-Ryeul,Roh Young-Man,Son Bu-Soon 한국환경보건학회 2006 한국환경보건학회지 Vol.32 No.2
Recently, indoor air quality (IAQ) in workplace, residential environments and schools has been concerned of people, scientists and related the public, and has recognized the health effects related to indoor air pollution. Therefore, this study was performed to investigate the characteristics of IAQ in 55 kindergartens, elementary school, middle schools, and high schools from June, 2004 to May, 2005 in Korea. We measured indoor air pollutants($PM_{10},\;CO_2$, HCHO, total bacteria colony(TBC), CO, radon, TVOCs, asbestos, and $O_3$), and physical factors(noise, temperature, relative humidity, and illumination) with necessary of management for IAQ in school. We classified into 5 kinds of the school by period since building completion, <1 year, 1-3 years, 3-5 years, and 5-10 years. The concentration of pollutants and the level of physical factors compared with standards and guidelines of IAQ on the Ministry of Environment, the Ministry of Health and Welfare, and the Ministry of Education and Human Resources Development. The major results obtained from this study were as follows. Temperature, relative humidity and illumination among the physical factors did not exceed the standards, but noise exceeded it. Asbestos and $O_3$ did not detect in surveyed classrooms. CO, TBC, TVOCs, and HCHO in kindergartens, TBC in elementary schools, TBC, TVOCs dnd HCHO in middle schools, and HCHO in high schools detected the standards. This study is conducted as a part of efforts to provide a foundational data for further relative researches on management of IAQ of school. Therefore, we suggest that country plan for management of IAQ in school should be established through long-term and continuous investigation for assessment on IAQ in school and health risk assessment for students.
손종렬(Jong-Ryeul Sohn),윤승욱(Seung-Wook Yoon),김윤신(Yoon-Shin Kim),노영만(Young-Man Roh),이철민(Cheol-Min Lee),손부순(Bu-Soon Son),양원호(Won-Ho Yang),이윤규(Yun-Gyu Lee),최한영(Han-Young Choi),이진성(Jin-Sung Lee) 한국실내환경학회 2006 한국실내환경학회지 Vol.3 No.1
Recently, indoor air quality (IAQ) in workplace, residence, and schools has been one of the major concerns of people, scientists and the related public. This study was performed to investigate the characteristics of indoor air quality(IAQ) in kindergartens, elementary school, middle schools, and high schools from June 2004 to May 2005 in Korea. We measured indoor air pollutants such as PM₁?, CO₂, formaldehyde, total bacteria colony(TBC), CO, radon, total volatile organic compounds(TVOCs), asbestos, and O₃ from school classrooms. The subjects were classified by building year based on the time span of 1, 1-3, 3-5, and 5-10 years. The levels of pollutants and physical factor in schools were compared with standards and guidelines of indoor air quality on the Ministry of Environment, the Ministry of Health and Welfare, and the Ministry of Education, and Human Resources Development of Korea. The major results obtained from this study can be summarized as follows. Asbestos and O₃ were not detected in all surveyed classrooms. However, we were able to detect CO, TBC, TVOCs, and formaldehyde in kindergartens, TBC in elementary schools, TBC, TVOCs and formaldehyde in middle schools, and formaldehyde in high schools. This study was conducted to provide a basis for the management IAQ in school. Therefore, we suggest that a national plan for the management of IAQ in school should be established through a long-term, continuous investigation for the proper assessment of IAQ in school and for the health risk assessment for student.
손호선(Ho Sun Son),고동혁(Dong Hyuk Ko),김향(Hyang Kim),이만호(Man Ho Lee),정을순(Eul Soon Chung),이상종(Sang Jong Lee),원남희(Nam Hee Won) 대한내과학회 1989 대한내과학회지 Vol.37 No.3
N/A Membranoproliferative glomerulonephritis (MPGN) with dense intramembranous deposits, so-called type II MPGN, is a subtype of idiopathic MPGN, and was described as a separate entity by Berger and Galle in 1963. It frequently occurs in older children and young adults and the clinical course is variable, but is generally progressive. The presenting feature is nephrotic syndrome in many patients, and proteinuria and hematuria are also seen frequently. Recently we experienced a case of type II MPGN which was proven by renal biopsy. A 14-year-old school boy was admitted to this hospital because of generatlized edema and hematuria which developed three weeks after an upper respiratory infection. The histopathologic findings showed a thickened capillary basement membrane with a tram-track appearance and epithelial crescent formation on light microscopy, and a characteristic rihbon-like appearance of the glomerular basement membrame with electron-dense deposits on electron microscopy. The patient received triple drug therapy including corticosteroid, dipyridamole and cyclophosphamide without improvement.
양양P/P 펌핑 중 발생한 외란에 대한 계통동요현상 분석 및 안정화 대책 수립에 관한 연구
손정국(Jung-Kuk Son),김진이(Jin-Yi Kim),조종만(Jong-Man Jo) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.11
양양양수는 282MVA급 발진설비 4기로 총 발전설비 용량은1,128㎿이며 발전설비에서 생산되는 발전량은 345㎸ 양양양수 #1,2T/L을 통하여 동해S/S로 송전되고 있다. 본 논문은 양양양수 4대 펌핑 중 345㎸ 양양양수#2T/L의 휴전으로 취약해진 전력계통에서 수분간 지속된 계통동요현상을 분석하고 이에 대한 대책을 수립함으로써 향후 안정적인 계통운영에 기여하고자 함이다.
이상종(Sang Jong Lee),이만호(Man Ho Lee),박영철(Young Chul Park),김명숙(Myung Sook Kim),서영주(Young Joo Suh),손호선(Ho Sun Son),임시영(Si Young Lym),송준호(Jun Ho Song) 대한소화기학회 1989 대한소화기학회지 Vol.21 No.1
Mesotheliomas are infrequently encountered tumors that arise from the surfaces of any mesothelial lined body cavity. They are found most often in the pleural cavity, less frequently in the peritioneal cavity, and much less frequer,tly in the pericardial cavity or arising from the tunica vaginalis. The tumors are most often malignant and usually are detected late in their course when they begin to interfere with organ fuction. Recently we experienced three cases with peritoneal mesothelioma who proved by laparoscopi biopsy. The first case had a five-month history of exhaustion, epigastric distress after meal and weight loss which was treated under the impression fo nephritis without improvement by LMD. After abdomial ultrasound and CT examination disclosed an irregular soft tissue mass in the omentum and per- itoneum associated with ascites, he received vincristin, doxorubicn and dacarbazine with transient improvement. The second case in a 74-year-old widow who had noted epigastric discomfort after meal for a few years, and recently increasing girth. Both abdominal ultrasound and computed tomogram showed an irregular soft tissue mass in the omentum, peritoneum and mesentery with a large amount of ascites. The latter patient had selected to receive only supportive therapy. The last case is a 53-year-old farmer who had suffered from abdominal discomfort for a few years. The ]aparoscope showed irregular sized tumor mass in the peritoneum, omentum and pelvic cavity, also there was ascites in the peritoneal cavity. He received chemotherapy including cycophosphamide vincrstin and adriamycin, but expired.