• Title/Summary/Keyword: 기준비교

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최신형 피뢰침 방식의 선정

  • Gang, In-Gwon
    • Electric Engineers Magazine
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    • v.204 no.8
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    • pp.54-60
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    • 1999
  • 본고에서는 기존의 대표적인 피뢰 보호방식과 최신의 신형 ESE 피뢰침에 대해서 피뢰이론, 보호공간, 동작원리, 구조 및 제반 설치사항을 포함한 기술적 특성과 경제성 등을 비교, 검토하고 최신의 피뢰 보호이론 및 신형 피뢰침 설비의 특성을 비교 검토하여 가장 적합한 피뢰 보호설비의 적용 선정기준을 정립하고자 한다.

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중대사고시 초음속연소 발생 평가 방법론 비교 연구

  • 홍성완;박수용;김희동
    • Proceedings of the Korean Nuclear Society Conference
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    • 1997.10a
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    • pp.689-694
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    • 1997
  • 본 논문에서는 초음속연소 발생 기준에 대해 ABB-CE에서 System80+에 적용한 방법론과 W. Breitung 등이 최근 실험자료를 이용하여 제시한 방법론에 대한 모델의 특징을 비교ㆍ분석하였다. W. Breitung 등이 제시한 방법론을 이용한 격납건물내에서 존재할 수 있는 여러 격실크기에서 수소농도를 가정하여 초음속연소 가능성 평가 수행 및 초음속연소 발생 평가절차를 제시하였다.

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냉난방기기의 에너지 효율 및 이산화탄소 배출 비교 분석

  • Jeong, Si-Yeong;Park, Yun-Cheol
    • The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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    • v.39 no.11
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    • pp.22-26
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    • 2010
  • 660 $m^2$(200평) 상업용 건물을 기준하여 멀티히트펌프와 GHP를 포함한 냉난방기기의 에너지 효율과 이산화탄소 배출 특성을 비교 분석.

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Birth weight for gestational age patterns by sex, plurality, and parity in Korean population (한국의 성별, 태아수별, 출산수별 임신주수에 따른 출생체중)

  • Lee, Jung Ju
    • Clinical and Experimental Pediatrics
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    • v.50 no.8
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    • pp.732-739
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    • 2007
  • Purpose : A universal standard of the birth weight for gestational age cannot be made since birth weight distribution varies with races, nations and eras. This report aims to establish the birth weight for gestational age patterns by sex, plurality, and parity, specific for Korean live births. Methods : The national birth certificate data of all live births in Korea from January 2000 to December 2004 were used: for live births with gestational age 24 weeks to 42 weeks (n=2,585,5160), mean birth weight, standard deviation and 10th, 25th, 75th and 90th percentile values were obtained for each gestational age group by one week increment. To establish final standard values of Korean birth weight distribution by gestational age, the finite mixture model to eliminated erroneous birth weights was used for respective gestational age. Same as above method the birth weight for gestational age standard by sex, plurality, and parity were completed. Results : The male newborns are more heavier than female during the entire gestational age. The singletons are more heavier than twin during the entire gestational age. The para 2 are more heavier than the para 1 during the entire gestational age. Korean standard was more heavier in 10th and 50th percentile than Lubchenco's standard. Alexander's standard was more heavier in 50th and 90th percentile than Korean standard. Conclusion : These birth weight for gestational age patterns by sex, plurality, and parity are similar to the other standards. I hope that for Korean infants, this curve will help clinicians in defining and managing the large for gestational age infants and also for infants with intrauterine growth retardation.

Water Quality Impact Assessment in Korea - Comparing with the Integrated Control of Pollutant-Discharging Facilities - (수질분야 환경영향평가의 개선방안 - 환경오염시설의 통합관리와 대비하여 -)

  • Lee, Jong Ho;Cho, Jae Heon
    • Journal of Environmental Impact Assessment
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    • v.26 no.5
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    • pp.331-343
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    • 2017
  • The important changes in water environment management in Korea can be summarized as the enactment of Act on the Integrated Control of Pollutant-Discharging Facilities. Therefore water quality impact assessment should be reexamined and be revised. This study examines the present water quality impact assessment items (permissible discharge limits, standards for effluent water quality including Total Pollutant Load Management System) and considers the land use regulation for water quality conservation and NVZs(Nitrate Vulnerable Zones of EU and England). It also considers lately adopted standards(maximum discharge standards, permissible discharge standards, and marginal discharge standards etc) based on Act on the Integrated Control of Pollutant-Discharging Facilities and then compares Korean BAT and its counterpart control technology of U.S.A. And it also compares the items of water quality impact assessment with those of Integrated Control of Pollutant-Discharging Facilities, based on EIS reporting items. This study suggests five improvement measures for water quality impact assessment. First reflection of discharge impact analysis on impact prediction and assessment, second reflection of permissible discharge standards on agreed standards in the EIA procedure, third, reflection of diversified BAT on mitigation measures in the EIA procedure, forth introduction of land use regulation such as NVZs, finally strengthening linkage between water quality items and land use items etc.