• Title/Summary/Keyword: Chungbuk-do

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Stand Alone Wind Generation System (독립 운전형 풍력발전시스템 모델링에 관한 연구)

  • Heo, Dong-Oh;Jo, Young-Ho;Seo, Hyun-Seok;Hong, Do-Hyoung;Kim, Jae-Eon
    • Proceedings of the KIEE Conference
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    • 2009.07a
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    • pp.1104_1105
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    • 2009
  • 본 논문에서는 풍력발전기와 배터리를 이용한 독립형 발전 시스템을 설치 함에 있어 대상지역의 자료를 분석하고 시스템을 구성하고 RPM-sim을 이용하여 WT과 BB의 용량을 설계한 후 시뮬레이션한 결과를 분석하여 대상 지역에 맞는 모델링을 하였는지를 확인하였다.

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Anomaly Detection Using Subgraph Pattern Analysis in Graph Streams (스트림 그래프에서 서브 그래프 패턴 분석을 이용한 이상 패턴 감지)

  • Wee, ji-woon;Choi, do-jin;Lim, jong-tae;Bok, kyoung-soo;Yoo, jae-soo
    • Proceedings of the Korea Contents Association Conference
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    • 2019.05a
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    • pp.287-288
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    • 2019
  • 그래프에서 이상 패턴은 정상 그래프와 상이하게 다른 양상을 갖는 그래프를 의미한다. 이상 패턴을 판단하기 위해서는 정상데이터 정확한 정의가 요구된다. 본 논문에서는 스트림 그래프에서 실시간으로 이상 패턴을 감지하는 기법을 제안한다. 제안하는 기법은 정상 서브그래프의 패턴(정상 패턴)을 정의하고 정점 간 연결 관계를 고려한다.

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Design of GUI for Benchmarking Database Engines Using YCSB (YCSB 기반의 데이터베이스 엔진 벤치마킹 GUI 설계)

  • Choi, Jae-yong;Ham, Seon-jung;Choi, do-jin;Park, soo-bin;Park, song-hee;Baek, yeon-hee;Shin, bo-kyoung;Park, jae-yeol;Lim, jong-tae;Bok, kyoung-soo;Yoo, jae-soo
    • Proceedings of the Korea Contents Association Conference
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    • 2019.05a
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    • pp.459-460
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    • 2019
  • 최근 데이터베이스에서 다루는 데이터의 크기가 커짐에 따라 SQL DB 대신 NoSQL DB의 사용이 증가하고 있다. 이런 변화에 따라 NoSQL과 저장장치에 대한 벤치마킹 및 분석을 통한 저장장치 성능 최적화 및 성능 평가 방법 개선이 필요하다. 본 논문에서는 기존 벤치마킹 툴의 조작 불편함을 해소하기 위해서 사용자의 편의성을 고려한 간편한 벤치마킹 시스템 GUI를 설계한다. 시각화 툴을 활용하여 벤치마킹 결과의 분석을 용이하게 할 수 있는 환경을 제공해준다.

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Nitric Oxide-induced Protein S-nitrosylation Causes Mitochondrial Dysfunction and Accelerates Post-ovulatory Aging of Oocytes in Cattle

  • Niu, Ying-Jie;Zhou, Dongjie;Zhou, Wenjun;Nie, Zheng-Wen;Kim, Ju-Yeon;Oh, YoungJin;Lee, So-Rim;Cui, Xiang-Shun
    • Journal of Animal Reproduction and Biotechnology
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    • v.35 no.1
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    • pp.102-111
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    • 2020
  • Nitric oxide (NO)-induced protein S-nitrosylation triggers mitochondrial dysfunction and was related to cell senescence. However, the exact mechanism of these damages is not clear. In the present study, to investigate the relationship between in vitro aging and NO-induced protein S-nitrosylation, oocytes were treated with sodium nitroprusside dihydrate (SNP), and the resultant S-nitrosylated proteins were detected through biotin-switch assay. The results showed that levels of protein S-nitroso thiols (SNO)s and expression of S-nitrosoglutathione reductase (GSNOR) increased, while activity and function of mitochondria were impaired during oocyte aging. Addition of SNP, a NO donor, to the oocyte culture led to accelerated oocyte aging, increased mitochondrial dysfunction and damage, apoptosis, ATP deficiency, and enhanced ROS production. These results suggested that the increased NO signal during oocyte aging in vitro, accelerated oocyte degradation due to increased protein S-nitrosylation, and ROS-related redox signaling.

Dieback Reality of Apple Trees Resulting from Soil-Borne Fungal Pathogens in South Korea from 2016 to 2019

  • Lee, Sung-Hee;Shin, Hyunman;Chang, Who-Bong;Ryu, Kyoung-Yul;Kim, Heung Tae;Cha, Byeongjin;Cha, Jae-Soon
    • Research in Plant Disease
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    • v.26 no.2
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    • pp.88-94
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    • 2020
  • Recently, the severe dieback of apple trees resulting from soil-borne diseases has occurred in South Korea. The casual agents of dieback were surveyed on 74 apple orchards that had been damaged nationwide in 2016-2019. The number of apple orchards affected alone by Phytophthora rot, violet root rot, and white root rot was 31, 34, and 3, respectively. Also, the total number of mixed infection orchards was 6. Out of 9,112 apple trees affected by dieback, the trees damaged by Phytophthora rot, violet root rot, and white root rot were 3,332, 3,831, and 44, respectively. Moreover, the total number of mixed infection apple trees was 1,905. The provinces mainly affected were Gyeongnam, Gyeongbuk, Chungbuk, and Jeonbuk. The survey on these infected apple orchards will be available to form management strategy for the dieback that had been increased by soil-borne fungal pathogens.