• 제목/요약/키워드: Lee Joon Gu

검색결과 328건 처리시간 0.032초

비파괴 시험에 의한 콘크리트 압축강도 추정에 관한연구 (A Study on the Strength of Concrete Core by Non-Destructive Method)

  • 김명원;이준구;조영권
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2009년도 춘계 학술대회 제21권1호
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    • pp.293-294
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    • 2009
  • 본 연구에서는 국내 농업용 저수지에서 구득한 초음파법과 슈미트헤머에 의한 반발경도를 이용하여 실험한 데이터와 동일 구조물에서 채취한 코어의 압축강도를 비교하여 비파괴 시험에 의한 콘크리트 압축강도 추정과 적용방법에 대하여 고찰해 보는데 그 목적을 두었다.

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배수갑문 트러니언의 피로해석 (Fatigue Analysis of Sluice Gate Trunnion)

  • 조재용;김관호;조영권;이준구
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2009년도 춘계 학술대회 제21권1호
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    • pp.557-558
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    • 2009
  • 새만금 간척지의 배수갑문 트러니언 구조물에 대한 피로해석을 수행하였다. 배수갑문 트러니언은 배수갑문과 교각을 연결하는 콘크리트 구조물로써 갑문에서 전달되는 하중의 크기와 방향이 주기적으로 변화한다. 해석결과, 하중의 방향이 일정한 구조물과 다소 상이한 양상이 나타났다.

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Confidence Bands for Survival Function Based on Hjort Estimator

  • Byung-Gu Park;Kil-Ho Cho;Woo-Dong Lee;Young-Joon Cha
    • Communications for Statistical Applications and Methods
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    • 제3권2호
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    • pp.119-127
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    • 1996
  • In this paper, we derive the Hall-Wellner band and the equal precistion band for survival function based on Hjort when the data are randomly right censored. The bands ate illustrated and compared by applying them to data from a preoperative radiation therapy.

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Estimation of Mean Residual Life under Random Censorship Model Using Partial Moment Approximation

  • Park, Byung Gu;Lee, Jae Man;Cha, Young Joon
    • 품질경영학회지
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    • 제22권3호
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    • pp.111-118
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    • 1994
  • In this paper we propose a parametric and a nonparametric small sample estimators for the mean residual life (MRL) under the random censorship model using the partial moment approximation. We also compare the proposed nonparametric estimator with the well-known nonparametric MRL estimator based on Kaplan-Meier estimator of the survival function, and present the efficiency of the nonparametric method relative to the Weibull model for small samples.

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한의 신의료기술 행위 동향 분석 (Study on the Present Status and Developments of New Health Technologies of Traditional Korean Medicine)

  • 한창현;박황진;이봉효;이영준;권오민
    • Korean Journal of Acupuncture
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    • 제29권2호
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    • pp.315-326
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    • 2012
  • Objectives : The new health technology assessment system was introduced in April 2007. The purpose of new health technology assessment is assessing safety and efficacy in deciding a behavior of new health technology according to the Health Insurance Act. This study aims to understand the present status of new health technologies of Korean medicine. Methods : This research introduces new health technologies and their present status, and searches for a development direction for the new health technology of Korean medicine in the future. Results : Thirty seven cases(3%) of Korean medicine doctors who utilized new health technologies application were found. In the status about new health technologies application by technologies assortment, diagnostic test techniques were used more often than treatment skills. New medical technology that included korean medicine doctor as actual user was only one item, i.e. HCV antibody test. Conclusions : In order for the new health technology of korean medicine to settle down well, continuous interest and efforts of both government and medical community are necessary.