검색결과

검색조건
좁혀보기
검색필터
결과 내 재검색

간행물

    분야

      발행연도

      -

        검색결과 24

        21.
        2018.11 KCI 등재 서비스 종료(열람 제한)
        Currently in the drought evaluation, which is a supplier-oriented standard that applies storage rates of reservoirs, evaluation for users that use agricultural water is not done. Therefore, this study established drought evaluation items for drought evaluation based on farmers' judgement, conducted a survey on farmers and experts, compared and analyzed weighted value between two groups, and then classified the evaluation standards per each evaluation item. The agricultural drought evaluation items are 5 major items of water supply lapse rate, agricultural weather, agricultural irrigation facility, crop and soil, and 12 subsections for regional characteristics and opinions of consumers that use water to be reflected. The result of analyzing weighted value of farmers and experts' major items shows that farmers is agricultural irrigation facility(0.219), water supply lapse rate(0.211), agricultural weather(0.204), crop(0.183) and soil(0.183). Experts is agricultural weather(0.297), agricultural irrigation facility(0.202), water supply lapse rate(0.189), crop(0.162) and soil(0.150), which displays difference between the two groups. The agricultural drought criteria standards are established based on precedent studies and cases, and grades of evaluation items are 1st grade(extreme stage), 2nd grade(warning stage), 3rd grade(alert stage) and 4th grade(attention stage). The above analysis per each consumer-oriented agricultural drought evaluation item and the analysis on the standards of evaluation grades are expected to be used as a basic resource for establishing agriculture drought policy and selecting drought area in the future.
        22.
        2015.04 서비스 종료(열람 제한)
        According to the available date sources, 1,814 bridges failures occurred over the past 210 years in the United States. The most frequent cause of bridges failures were attributed to external events such as: floods, collisions, scour, overloading and deterioration. Among these external events, Hydraulic factor caused the maximum number of bridges failures with 54% of the total failures. 20% of hydraulic factor was failed by scour. Thus, base on the result of reviewing design basis and safety assessment practices, criteria for determining safety assessment of bridge foundation scour is proposed. 25 bridges were reviewed for applicability to scour safety assessment of passing bridges in river channels.
        23.
        2012.02 서비스 종료(열람 제한)
        미국, 영국 등 외국에서는 설치되는 위치 및 내화성능 시간 등에 따라 방화유리 또는 내화유리의 사용을 명확히 규정하고 있는 반면, 국내 건축법에서는 방화유리를 발코니 방화벽 등 일부에만 사용할 수 있도록 규정하고 있다. 그러므로 국내에서 유리부재를 방화구획 등에 사용하려 하여도 관련 규정이 명확하지 않아 그 사용에 어려움이 있었다. 본 연구에서는 국외의 방화유리 및 내화유리 관련 기준 및 시험방법을 고찰하여, 화재시 건축물에서 유리부재의 적절한 방화성능기준 수준을 평가하고자 하였다. 연구된 자료는 유리부재 설치에 대한 규정 개정의 기초자료로 사용될 수 있을 것으로 판단되었다.
        1 2