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조용민(Yong-Min Jo),김효남(Hyo-Nam Kim) 한국컴퓨터정보학회 2018 한국컴퓨터정보학회 학술발표논문집 Vol.26 No.1
현재 e스포츠 시장은 게임 산업의 성장과 맞물려 매우 큰 규모로 확대되고 있고, 업종을 불문하고 다양한 국제적인 기업과 스포츠 구단이 진출하고 있는 실정이다. 본 논문에서는 컴퓨팅 관련 산업에 있어서 수요와 공급의 중간 매체의 역할을 하는 품질보증(QA : Quality Assurance)이 게임 산업의 한 분야인 e스포츠 산업을 위해 수행할 역할과 상호작용에 대한 중요성과 필요성을 제시하고자 한다.
잉크젯 프린팅 기술을 이용한 기판 표면처리와 금속 패턴 형성에 관한 연구
조용민 ( Yong Min Jo ),박성준 ( Sung Jun Park ) 한국분무공학회 2012 한국액체미립화학회지 Vol.17 No.1
Inkjet printing is one of the direct writing technologies and is able to form a pattern onto substrate by dispensing droplets in desired position. Also, by inkjet technology manufacturing time and production costs can be reduced, and procedures can be more efficient. To form a metal pattern, it must be harmonized with conductive nano ink, printing process, sintering, and surface treatment. In this study, micro patterning of conductive line has been investigated using the piezoelectric printhead driven by a bipolar voltage signal is used to dispense 20-40 μm diameter droplets and silver nano ink which consists of 50 nm silver particles. In addition, hydrophobic treatment of surface, overlap printing techniques, and sintering conditions with changing temperature and times to achieve higher conductivity.
조용민(Yong-min Jo),이태헌(Tae-Heon Lee),김종구(Jong-Goo Kim),윤광섭(Kwang Sub Yoon) 대한전자공학회 2016 전자공학회논문지 Vol.53 No.10
본 논문에서는 휴대기기에 적합한 모드 전환 제어 가능한 듀얼 모드 벅 변환기를 제안한다. 기존의 모드 제어 회로는 부하의 변동이 급격하거나 천천히 변동하거나 둘 중 하나의 조건에서만 모드 전환이 이루어지는 문제점을 슬로우 클럭을 이용한 모드 제어 회로 기법으로 해결하였다. 그리고 PFM(Pulse Frequency Modulation) 모드에서 PWM(Pulse Width Modulation) 벅 변환기로 전환할 때에도 카운터를 사용하여 고부하를 감지할 수 있도록 하였으며 3비트의 디지털 신호로 20mA∼90mA내에서 모드 전환 시점을 선택할 수 있도록 설계하였다. 이 회로는 BCDMOS 0.18um 2-poly 3-metal 공정으로 제작되었으며, 측정 결과 입력전압 3.7V, 출력전압 1.2V 부하 전류 10uA∼500mA 범위에서 32mV 이하의 출력 전압 리플을 가지며 86%의 최대 전력 변환 효율을 나타내었다. In this paper, a dual mode buck converter with an ability to change mode is proposed, which is suitable particularly for portable device. The problem of conventional mode control circuit is affected by load variation condition such as suddenly or slowly. To resolve this problem, the mode control was designed with slow clock method. Also, when change from the PFM(Pulse Frequency Modulation) mode to the PWM(Pulse Width Modulation) mode, to use the counter to detect a high load. And the user can select mode transition point in load range from 20mA to 90mA by 3 bit digital signal. The circuits are implemented by using BCDMOS 0.18um 2-polt 3-metal process. Measurement environment are input voltage 3.7V, output voltage 1.2V and load current range from 10uA to 500mA. And measurement result show that the peak efficiency is 86% and ripple voltage is less 32mV.
간질성 폐렴이 동반된 항합성효소항체 증후군에서 Rituximab을 사용한
김용준 ( Yong Jun Kim ),이성원 ( Sung Won Lee ),정원태 ( Won Tae Chung ),이상엽 ( Sang Yeob Lee ),조용민 ( Yong Min Jo ),정진규 ( Jin Kyu Jung ) 대한류마티스학회 2010 대한류마티스학회지 Vol.17 No.4
The clinical manifestations of antisynthetase syndrome are severe interstitial pneumonitis, mild polyarthritis, and myositis. This disease is accompanied by anti-Jo-1 antibodies and anti-Ro/SSA antibodies and occasionally by the concurrence of anti-Jo-1 and anti-Ro/SSA antibodies, which leads to a more severe form of interstitial lung disease. In this case, the patient was transferred to our hospital because of pulmonary fibrosis with myositis and diagnosed with antisynthetase syndrome and the concurrence of anti-Jo-1 with anti-Ro/SSA antibodies. He was refractory to glucocorticoids, and developed leucopenia and thrombocytopenia. He was treated with rituximab infusions, but the interstitial pneumonitis progressed very rapidly and he died.
이상엽 ( Sang Yeob Lee ),조용민 ( Yong Min Jo ),김민식 ( Min Sik Kim ),김혜인 ( Hye In Kim ),이성원 ( Sung Won Lee ),정원태 ( Won Tae Chung ) 대한류마티스학회 2008 대한류마티스학회지 Vol.15 No.4
Systemic lupus erythematous (SLE) is systemic autoimmune disease of unknown etiology. SLE involve all part of heart but clinically important myocarditis is an unusual feature and is potentially fatal complication of SLE. We describe the woman who had diagnosed as SLE, 5 years ago and in that time, she had sinus tachycardia, mild dyspnea, chest discomfort, and depressed left ventricular function. She was diagnosed to myocarditis clinically and was treated by high-dose corticosteroids of intravenous pulse methylprednisolone. After treatment, she improved and showed improvement of left ventricular function. However, a sudden pneumomediastinum was occurred without trauma, and she died. The cause of pneumomediastinum was unexplained. We report a sudden pneumomediastinum in the course of lupus myocarditis presenting as sinus tachycardia with review of literature.