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송일한,최정,전용,윤윤수,임창영,김정원,노임환,김흥태,김태훈,명나혜,정민 대한내과학회 1997 대한내과학회지 Vol.53 No.3S
저자등은 상복부 동통 및 체중감소를 주로로 내원한 55세 남자 환자에서 췌장미부, 비장피막, 위주위지방조직 및 림프절의 일부를 침범한 원발성 위내 순수편평세포암 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Primary squamous cell carcinoma of the stomach is a extremely rare tumor, described in only about 80cases in the literature since 1905. It occurs mostly in males, affects a slightly younger group as compared to adenocarcinoma, and has a predilection for the proximal stomach, especially along the lessor curvature side. The pathogenesis of this neoplasm is controversial, but squamous metaplasia resulting from any injury to the gastric mucosa appears to have a role in the pathogenesis of this cancer. The prognosis of squamous cell carcinoma of the stomach is probably less favorable than that of adenocarcinoma due to its higher frequency of lymphovascular invasion. We report a case of primary squamous cell carcinoma of the stomach in a 55-year-old male with a review of the literature,
SOMANGNET: SMALL TELESCOPE NETWORK OF KOREA
MYUNGSHIN IM,Yonggi Kim,이충욱,이희원,박수종,Hyunjin Shim,Hyun-Il Sung,Wonseok Kang,Taewoo Kim,Jeong-Eun Heo,HINSE TOBIAS CORNELIUS,Masateru Ishiguro,임구,Cuc T. K. Lý,Gregory S. H. Paek,서진국,Joh-Na Yoon,우종학,안호재 한국천문학회 2021 Journal of The Korean Astronomical Society Vol.54 No.3
Even in an era where 8-meter class telescopes are common, small telescopes are considered very valuable research facilities since they are available for rapid follow-up or long term monitoring observations. To maximize the usefulness of small telescopes in Korea, we established the SomangNet, a network of 0.4-1.0 m class optical telescopes operated by Korean institutions, in 2020. Here, we give an overview of the project, describing the current participating telescopes, its scientific scope and operation mode, and the prospects for future activities. SomangNet currently includes 10 telescopes that are located in Australia, USA, and Chile as well as in Korea. The operation of many of these telescopes currently relies on operators, and we plan to upgrade them for remote or robotic operation. The latest SomangNet science projects include monitoring and follow-up observational studies of galaxies, supernovae, active galactic nuclei, symbiotic stars, solar system objects, neutrino/gravitational-wave sources, and exoplanets.
Non-zero Mean Noise에 의한 Signal의 Boost-up 및 Drag-down을 Correction하기 위한 연구
임나리(Na-Ri IM),김일도(Il-Do Kim),최병선(Byung-Sun Choi),박상규(Sahng-Gyu Park) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7
카메라 시스템에서 일반적인 Noise Reduction방법은 Noise간에 서로 Correlation이 없고 Independent 한 White Noise이며, Zero Mean Noise라는 가정 하에 설계된 것이다. 본 논문에서는, 실제 Non-zero Mean Noise 현상을 규명하고, 이에 의해 발생한 Low Level Signal의 Boost-up 및 High Level Signal의 Drag-down을 Correction하여 화질을 개선하기 위한 방안을 제안한다.