• Title/Summary/Keyword: Jung Jae-ryun

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A Survey on Deep Learning-based Image Downsampling (딥러닝 기반 영상 다운샘플링 기술 분석)

  • Chung, Jae Ryun;Jung, Seung-Won
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2019.11a
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    • pp.235-236
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    • 2019
  • 본 논문에서는 초해상도, 압축 열화 제거 등 영상 화질 복원 연구에서 영상의 다운샘플링에 딥러닝을 적용한 연구들에 대해 소개한다. 첫 번째 연구는 두 개의 컨볼루셔널 신경망과 영상 압축 코덱을 이용하여 압축 영상의 화질을 향상시켰다. 두 번째 연구는 초해상도 문제를 해결함에 있어 다운샘플링 역시 딥러닝을 통해 학습하여 복원 영상의 화질을 향상시켰다. 두 연구를 통해 영상 화질 개선 문제 해결에 있어 적절한 딥러닝 학습 방법을 영상 다운샘플링에 적용하여 좋은 결과를 얻을 수 있다는 것을 확인할 수 있다.

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Comparative Chemiluminescent Response of Phagocytes from Peripheral Blood, Head Kidney and Spleen of the Cultured Rockfish (Sebastes schlegeli)

  • Kim Ki Hong;Hwang Yoon Jung;Cho Jae Bum;Kwon Se Ryun
    • Fisheries and Aquatic Sciences
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    • v.3 no.1
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    • pp.23-25
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    • 2000
  • To compare the respiratory burst activity potential of the phagocytes isolated from head kidney, spleen, and peripheral blood 1ll cultured rockfish (Sebastes schlegeli), chemiluminescent (CL) response analysis was performed. The phagocytes isolated from peripheral blood showed greater and faster CL response to the opsonized zymosan compared to that of the phagocytes isolated from kidney or spleen. This may imply a significant role of the blood phagocytes in defence mechanism of rockfish. The different responses found in the CL analysis among the phagocytes isolated from peripheral blood, kidney, and spleen may reflect differences in activation state or activity of phagocytes.

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A Case of Taeeum-ia Hangwol Symptomatology Patient who Showed Improvement with the Handayeolso-tang (한다열소탕(寒多熱少湯)으로 호전된 태음인(太陰人) 한궐증(寒厥證) 환자(患者) 치험 1례)

  • Kim, Oh-Young;Cho, Jae-Seung;Lee, Ryun-Mi;Park, Se-Jung;Park, Hye-Sun
    • Journal of Sasang Constitutional Medicine
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    • v.21 no.3
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    • pp.202-208
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    • 2009
  • 1. Objectives: The purpose of this study is to report one case of the Taeumin Hangwol Syndrome diagnosed as Upper Respiratory Infection with unknown cause. 2. Methods: The patient had the symptoms including chilling sensation, general weakness and fatigue. We diagnosed him as Taeeumin Hangwol Syndrome. So we treated him by Handayeolso-tang(寒多熱少湯), and acupuncture. The serial changes of his symptoms were evaluated in hospital. 3. Results and Conclusions: After treated by Handayeolso-tang(寒多熱少湯), his symptoms were improved.

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Measurement of membrane fluidity of rockfish (Sebastes schlegeli) phagocytes during the respiratory burst using fluorescence polarization assay

  • Jung, Jae-Hyuck;Kwon, Se-Ryun;Lee, Eun-Hye;Kim, Sung-Mi;Kim, Ki-Hong
    • Journal of fish pathology
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    • v.16 no.2
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    • pp.131-134
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    • 2003
  • The change of membrane fluidity in rockfish (Sebastes schlegeli) phagocytes during respiratory burst was investigated. Fluorescence polarization (FP) was used as a measure of membrane fluidity, and 1-(4-trimethylaminophenyl)-6-phenyl-1 .3 ,5-hexatriene (TMA.-DPH) was used us a fluorescent probe. The significantly higher FP values in phagocytes stimulated With zymosan or phurbol myristate acetate (PMA) than unstimulated control phagocytes suggests that membrane fluidity of phagocytcs is decreased during the respiratory burst. The faster decrease of FP value in PMA stimulated phagocytes than in zymosan sumulated phagocytes may be due to bypass of the receptor-mediated stages of functional modulation. which is needed in zymosan stimulated phagocytes.

Decentralized Frequency Allocation Scheme in Vehicle-mounted Mobile Relay System (차량 탑재형 이동 중계기의 분산 주파수 분할 기법)

  • Shin, Yun-Jae;Lee, Jung-Ryun
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.37 no.7C
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    • pp.592-600
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    • 2012
  • In this paper, we proposed that decentralized frequency allocation scheme(DFAS) without network entry procedure between relays in mobile relay system. Frequency Indicator(FI) signal which is the reference signal of frequency division of each relay and Energy Detection(ED) region are defined. In addition, the mobile connected to the relay transmits the FI signal to neighbor relays in order to facilitate communication between relays. Finally, by using this scheme, the cell throughput improvement is confirmed.

Harmonic Bun Analysis of Traction Motor in the High Speed Train with the Distributed Tractions (운전 특성을 고려한 고속 전철용 영구자석 동기전동기의 철손 해석)

  • Seo, Jang-Ho;Lim, Jae-Won;Lee, Sang-Yub;Jung, Ryun-Kyo
    • Proceedings of the KSR Conference
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    • 2009.05b
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    • pp.267-274
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    • 2009
  • To predict efficiency of Interior Permanent Magnet Synchronous Motors(IPMSM) and to cope with the demagnetization risk of permanent magnets used in the IPMSM, accurate iron analysis of the IPMSM is very important at the motor design stage. In the analysis, we calculate the operation condition such as rotor speed and current angle. and then, we analyzed the iron loss of the machine for electric vehicle according to its driving condition. From the analysis results, it was shown that the harmonic iron losses of stator are larger than before at field-weakening region. In addition, it was revealed that rotor iron loss mainly induced by stator slot-ripples is independent of current angle and only varied according to the speed.

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