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장수진,류동균,원충연,이진국,배기훈,김수석 성균관대학교 2003 학술회의지원논문목록집 Vol.2003 No.-
A synchronous generator is equipped with an automatic voltage regulator(AVR), which is responsible for keeping the output voltage constant under normal operating conditions at various levels. The output voltage of Synchronous Generator is regulated constantly by field voltage control in excitation system. High frequency PWM converter (Buck converter) type excitation system for synchronous generator that can sustain proper output voltage level even at the fault condition happened. The proper operation of the proposed excitation system was verified through the simulations and the experiments.
반창우,홍석기,장동영 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-
반도체, LCD, 휴대폰과 같이 제품 원가에 비해 고부가가치 제품 산업들은 급속한 발전과 새로운 서비스 요구로 인해 제품의 생산에 있어서 제조 스피드가 관건이다. 본 연구에서는 복잡하고 다양한 반도체 프로세스 중에서 Track - Aligner - Oxide Etcher - Asher - Sputter - Microscope 프로세스의 모델링을 통하여 평균 생산 시간과 처리량을 측정하여 처리량을 극대화 할 수 있는 생산 시간의 최적화에 대해 고찰하였다.
이양민,이병문,임장수,김창민,강동우,심현숙,이재기 동아대학교 정보기술연구소 2003 情報技術硏究所論文誌 Vol.11 No.1
Cases that apply mobile technology in own company's business processing in various industry area are increasing. In this paper, we propose a Mobile Portal constructin method accepting that flowing these age. Analyze instance that is applying mobile service in another industry to achieve Mobile Portal service and we chose core technology with this result. As focus of research, we implemented interaction interface between web page and database, conversion skill between wire and wireless contents, communicatin method between web page and contents conversion server, and application technology on Mobile service target Business and implemented Mobile service that applicable.
한국 정신장애의 역학 조사 연구[I] : 각 정신장애의 유병률
조맹제,함봉진,김장규,박강규,정은기,서동우,김선욱,조성진,이준영,홍진표,최용성,박종익,이동우,이기철,배재남,신정호,정인원,박종한,배안,이충경 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.4
Objectives : This study aims to estimate the prevalence of the DSM-IV psychiatric disorders in Korean population using the Korean version of Composite International Diagnostic Interview (K-CIDI). Methods : Subjects were selected by taking multi-stage, cluster samples of 7,867 adult household residents, 18 to 64 years of age, in ten catchment areas. Total 78 trained interviewers administered the K-CIDI to the selected respondents, from June 1 to November30,2001. Results : Total 6,275 respondents completed the interview. Some 33.5% of respondents reported at least one lifetime disorder, 20.6% reported at least one-year disorder, and 16.7% reported at least one-month disorder. The most common lifetime disorders were alcohol abuse/dependence (17.24%), nicotine dependence/withdrawal (11.19%), specific phobia (5.16%), and major de-pressive disorder (4.25%). The lifetime prevalence of substance abuse/dependence (0.25%) and schizophrenia (0.16%) was very low. Nicotine and alcohol use disorder showed very high male/female ratio. Mood disorder and anxiety disorder were more prevalent among female than male. Conclusion : The prevalence of psychiatric disorders was high. In comparison with other studies, remarkable differences in distributions of psychiatric disorders across the areas and times were observed.
방사선 조사 마우스에서 소장움세포의 Apoptosis 발생에 미치는 생약의 효과
김성호,안미라,나승렬,이종환,김재하,조성기,장종식,신동호 대한방사선 방어학회 2001 방사선방어학회지 Vol.26 No.1
Apoptosis의 유발을 억제하는 한약제를 파악하여 apoptosis와 관련된 정상적 또는 질병에 대한 연구에 자료를 제공하고자 방사선에 의해 유도된 apoptosis를 지표로 한의학적 처방에서 많이 사용되는 대표적 한약제(24종)의 효과를 검증하였다. 용안육, 산조인, 원지, 인삼, 복령, 목향, 천궁, 백작약, 승마, 시호 및 눈꽃동충하초 투여군에서 apoptosis는 감소되었으며, 이들 생약제는 apoptosis와 관련된 질병의 예방 및 치료에 적용할 수 있을 것이다. 추 후 이들 생약의 작용 기전에 대한 연구가 요구된다. This study was performed to determine the effect of several herbs on radiation-induced apoptosis in jejunal crypt cells. Longyanrou(Euphoris longana), Suanzaoren(Zizyphus vulgaris), Yuanzhi(Polygala tenuifolia), Rensan(Panax ginseng), Fuling(Poria cocos), Muxiang(Saussurea lappa), Chuanxiong(Cnidium officinale), Baishaoyao(Paeonia lactifolia), Shengma(Cimicifuga heracleifolia), Chaihu(Bupleurum falcatum) and Dongchongxiacao(Paecilomyces japonica) reduced the frequency of radiation-induced apoptosis(p<0.05). Although the mechanisms of this effect remain to be elucidated, these results indicated that Longyanrou, Suanzaoren, Yuanzhi, Rensan, Fuling, Muxiang, Chuanxiong, Baishaoyao, Shengma, Chaihu and Dongchongxiacao might be useful inhibitors of apoptosis, especially since these are relative nontoxic natural products.
Endoscopic ultrasound-guided biliary drainage in malignant distal biliary obstruction
Dong Kee Jang 소화기인터벤션의학회 2022 Gastrointestinal Intervention Vol.11 No.3
Endoscopic retrograde cholangiopancreatography is the standard therapeutic approach for malignant distal biliary obstruction (MDBO). However, it can be challenging in patients with surgically altered anatomy, pyloric/duodenal obstruction, or failed biliary cannulation. Since the development of endoscopic ultrasound (EUS), EUS-guided biliary drainage (EUS-BD) has been increasingly performed. The current article provides a concise review of the latest practices and techniques of EUS-BD procedures for MDBO including EUS-assisted rendezvous, EUS-guided antegrade stenting, EUSguided choledochoduodenostomy, and EUS-guided hepaticogastrostomy.