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이우배(Lee. Woo-Bae),임정덕(Lim. Jung-Duk),이순정(Lee. Soon-Jeong),김성권(Kim. Sung-Kwon) 한국지역개발학회 2008 韓國地域開發學會誌 Vol.20 No.2
Local business enabling environment of Busan metropolitan area has been evaluated in four different areas including production factors, local economic condition, policy factors and local living environment. Research outcomes of the time-series analysis indicate that overall business environment of Busan metropolitan area has improved gradually for last ten years. Looking in more details, fields of local policy factors and local living environment show much improvement, whereas deteriorating economic condition gave negative impact on local business environment. Condition of local finance and human resources indicate small improvement. Surnmarizing our research findings, we provide some policy implications for Busan metropolitan govemment to improve its local business enabling environment. First, they need to attract large firms to build a growing market for small-and medium- sized firms. In addition, improvement of local business service industry can help local economy more efficient and profitable.
박찬성 ( Chan Sung Park ),이순정 ( Soon Jung Lee ),도기원 ( Gi Won Do ),오쌍용 ( Ssang Yong Oh ),조현 ( Hyun Cho ),김민수 ( Min Su Kim ),홍일기 ( Il Ki Hong ),방성조 ( Sung Jo Bang ),제갈양진 ( Yang Jin Jegal ),안종준 ( Jong Joon 대한결핵 및 호흡기학회 2008 Tuberculosis and Respiratory Diseases Vol.65 No.2
Cholethorax (bilious pleural effusion) is an extravasation of bile into the thoracic cavity via a pleurobiliary fistula (and also a bronchobiliary fistula). It is an extremely rare complication of thoraco-abdominal injuries. It can be caused by congenital anomaly and also by hepatobiliary trauma, severe infection or iatrogenic procedures. The definitive diagnosis is made with aspiration of bilious fluid from the pleural space during thoracentesis, by finding a fistulous tract during endoscopic retrograde cholangiopancreatography (ERCP) or cholagioscopy, or with finding an abnormal pleural accumulation of radioisotope during hepatobiliary nuclear imaging. Its symptoms include coughing, fever, dyspnea and pleuritc chest pain. Herein we report on a case of cholethorax following performance of percutaneous transhepatic cholangioscopy (PTCS) to remove incidentally discovered common bile duct (CBD) stones. (Tuberc Respir Dis 2008;65:131-136)
피어슨 상관계수를 이용한 신재생에너지 출력 변동 경감용 전력 저장장치 제어 알고리즘 개발
김지수(Ji-Soo Kim),이순정(Soon-Jeong Lee),오윤식(Yun-Sik Oh),조규정(Gyu-Jung Cho),심보석(Bo-Seok Sim),김민성(Min-Sung Kim),문승필(Seung-Pil Moon),김철환(Chul-Hwan Kim) 한국조명·전기설비학회 2016 조명·전기설비학회논문지 Vol.30 No.9
Renewable Energy Sources(RES) has disadvantages that it can cause a variation of the voltage and frequency in the power system because the output of RES is depending on the nature. Recently in order to solve these problems, many researches are in progress, in particular research of Battery Energy Storage System(BESS) has been active to stabilize the output. However, conventional research has still inherent limitation to control the voltage and frequency separately. In this paper, a method to control the voltage and frequency at the same time is proposed using ElectoMagnetic Transients Program(EMTP) and the proposed method is verified by simulation.