• Title/Summary/Keyword: Kim Younghun

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An introduction to the recently excavated Chunggang Medical Records and research on their medical value

  • Kim, Nam-Il;Yun, Seng-Yick;Hong, Sae-Young;Ahn, Sang-Woo;Cha, Wung-Seok
    • Advances in Traditional Medicine
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    • v.7 no.2
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    • pp.103-113
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    • 2007
  • This study is a report on recently discovered medical records based on traditional medicine in the 1900s. First, the contents of the records and their significance are described in detail. Next, a simple example of the research follows, in order to explain the medical and historical significance the records contain and to answer the question of how this historical document can contribute to future medical and historical studies. The documents dealt with in this study, the Chunggang Medical Records, are medical records compiled by a Korean doctor of oriental medicine by the name of Younghun Kim who practiced in the center of Seoul for a period of over 60 years. The records, which eventually amounted to over 1,500 books, were made known to the academic world when the descendents recently donated them to Kyunghee University. The reason these medical records attract so much attention from academic circles, even though they are the work of one individual, is that they contain abundant information on general public medical health at the time, in addition to the fact that Kim Younghun was a well known figure among Oriental Medicine doctors in Korea. The medical records start in 1915 and continue until Kim Younhun's death in 1974, though they have some damaged or missing parts. Kim's medical records are a gold mine not only for scholars studying the medical history of the early 1900s, but also for doctors trying to emulate the techniques embedded in a great predecessor's medical practice.

Study of 『DongYangEuiYak』 (『동양의약(東洋醫藥)』 연구)

  • Jung, Ji Hun
    • The Journal of Korean Medical History
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    • v.15 no.2
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    • pp.101-108
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    • 2002
  • "DongYangEuiYak" is a magazine that was published three times to reconstruct Korean medicine. Publishing the magazine was leaded by excutives of the East and West Medicine Research Society, especially Kim younghun and Cho hunyoung. The magazine contains reconstruction of Korean medicine, medical history, pulse, herb, Sasang medicine and etc, in depth. Editorial department of "DongYangEuiYak" tried to boom Korean medicine and reeducate the people working in Korean medicine field by answering reader's questions and medical counselling articles and articles in correspondence course form. Studing courses and founding herb town after the publishment of "DongYangEuiYak", reflects well the culminated atmosphere of Korean medicine.

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Sink Mobility Strategy for Maximizing Network Lifetime in Wireless Sensor Networks (무선센서네트워크의 수명 최대화를 위한 모바일싱크 배치전략)

  • Kim, Younghun;Lee, Keontaek;Han, Seungjae
    • Proceedings of the Korea Information Processing Society Conference
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    • 2010.11a
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    • pp.1658-1661
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    • 2010
  • 유비쿼터스 시대가 도래하면서 인프라 중 하나인 센서네트워크에 대한 연구가 활발하게 진행되고 있다. 배터리를 사용하는 센서들의 특성상 네트워크 수명을 최대화하는 것이 주요 이슈 중 하나인데, 모바일 싱크를 이용하여 패킷 전송에 소비되는 에너지 로드 밸런싱을 통해 효율적인 결과를 얻을 수 있었다. 전체 센서들의 잔여 에너지와 그 평균과의 편차를 싱크를 움직이는 기준으로 하는 휴리스틱 알고리즘을 제안하였고 최적에 가까운 결과를 얻었다.

서비스 지향형 PACS-Grid

  • Kim, Younghun;Park, Sangsu;Youn, Chan-Hyun
    • Proceedings of the Korea Information Processing Society Conference
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    • 2009.11a
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    • pp.209-210
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    • 2009
  • 임상공학 분야에서의 두 가지 트랜드의 변화가 주목된다. 급성질환에서 만성질환으로 의료/건강관리의 중요성이 증가하는 것이고, 이를 다루는 의료정보의 처리기기가 컴퓨터화 되고 있으며, 통합되어 이용되어 가는 것이다. 또한, 이 두 가지의 변화가 융합되는 방향으로 임상공학 분야의 연구의 중요성이 증가하고 있다. 이와 같은 의료정보처리의 요구사항을 만족하기 위하여 기 연구한 의료영상기반 협업 플랫폼 PACS-Grid[1]을 바탕으로 만성질환 지향형 의료정보 통합 가시화의 통합방법을 다룬다. 더불어 이를 지원하기 위한 서비스 지향형 PACS-Grid 플랫폼을 제안한다.

Multiple Target Tracking using Normalized Rayleigh Likelihood of Amplitude Information of Target (Normalized Rayleigh Likelihood를 활용한 표적신호세기정보 적용 다중표적추적 기술)

  • Kim, Sujin;Jung, Younghun;Kim, Seongjoon
    • Journal of the Korea Institute of Military Science and Technology
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    • v.20 no.4
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    • pp.474-481
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    • 2017
  • This paper presents a multiple target tracking system using Normalized Rayleigh likelihood of amplitude information of target. Although many studies of Radar systems using amplitude information have been studied, they are focused on single target tracking. This paper proposes the multiple target tracking using amplitude information as well as kinematic information from Radar sensor. The amplitude information are applied in generating the association probability of joint probabilistic data association(JPDA) algorithm through the normalized Rayleigh likelihood. It is verified that the proposed system can enhance the track maintenance and tracking accuracy, especially, in the target crossing case.

Rainfall Quantile Estimation using Scaling IDF Curve and Frequency Analysis (스케일링 IDF곡선과 빈도해석을 이용한 확률강우량 추정)

  • Jung, Younghun;Kim, Sunghun;Kim, Hanbeen;Heo, Jun-Haeng
    • Proceedings of the Korea Water Resources Association Conference
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    • 2017.05a
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    • pp.436-436
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    • 2017
  • IDF(intensity-duration-frequency) 곡선은 재현기간을 고려하여 수공구조물 설계에 필요한 설계강우량을 산정하는데 사용되고 있다. 국내의 경우 IDF 곡선은 지점빈도해석으로부터 지속기간별로 산정되고 있으며 지속기간별 분포형 선택과 같은 많은 가정으로 인해 불확실성을 내포하고 있다. 본 연구에서는 이러한 극한 강우량의 스케일 특성을 통해 서로 다른 기간에 걸쳐 통계적으로 접근하고자 하였다. 이를 위해 지속기간 24시간의 강우자료로부터 연최대강우량을 추출하여 스케일 특성을 통해 지속기간 24시간 이하 또는 이상의 스케일링(scaling) IDF 곡선을 유도하였다. 본 연구를 위해 k-means 방법으로부터 지역을 구분하여 지역빈도해석을 실시하였고, 기상청 산하의 강우 지점을 미계측 지점으로 가정한 후 하향스케일링(down-scaling)과 상향스케일링(up-scaling)을 적용한 후 지속기간 24시간 이외의 확률강우량을 추정하였으며, 빈도해석 결과와의 비교를 통해 스케일링 IDF 곡선의 적용성을 판단하였다.

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Remaining useful life prediction for PMSM under radial load using particle filter

  • Lee, Younghun;Kim, Inhwan;Choi, Sikgyoung;Oh, Jaewook;Kim, Namsu
    • Smart Structures and Systems
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    • v.29 no.6
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    • pp.799-805
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    • 2022
  • Permanent magnet synchronous motors (PMSMs) are widely used in systems requiring high control precision, efficiency, and reliability. Predicting the remaining useful life (RUL) with health monitoring of PMSMs prevents catastrophic failure and ensures reliable operation of system. In this study, a model-based method for predicting the RUL of PMSMs using phase current and vibration signals is proposed. The proposed method includes feature selection and RUL prediction based on a particle filter with a degradation model. The Paris-Erdogan model describing micro fatigue crack propagation is used as the degradation model. An experimental set-up to conduct accelerated life test, capable of monitoring various signals was designed in this study. Phase current and vibration data obtained from an accelerated life test of the PMSMs were used to verify the proposed approach. Features extracted from the data were clustered based on monotonicity and correlation clustering, respectively. The results identify the effectiveness of using the current data in predicting the RUL of PMSMs.

Service-oriented PACS-Grid for Chronological Clustering (만성질환 클러스터링을 위한 서비스 지향형 PACS-Grid)

  • Al Hazemi, Fawaz;Song, Hyewon;Youn, Chan-Hyun;Kim, Byeong-Sang;Kim, Younghun;Jin, Gwang-Ja
    • Proceedings of the Korea Information Processing Society Conference
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    • 2010.04a
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    • pp.247-250
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    • 2010
  • 본 논문에서는 전산화 및 통합된 환경에서 의료정보처리 요구사항을 만족시키기 위하여 만성질환 클러스터링 기법을 제안하고, 이를 서비스 지향형 PACS-Grid 플랫폼에 적용하여 그 성능을 평가한다. 마지막으로 제안된 시스템 형상이 기존의 PACS-Grid 보다 데이터 처리 성능이 개선되었음을 보여준다.