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        검색결과 472

        41.
        2020.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study analyzed the appropriate placement method by floor for evacuating all occupants during the nighttime through evacuation simulation. The analysis results are as follows. First, when non-self evacuating patients were placed on the first floor, 266 patients and 6 workers were found to be evacuated after 460 seconds. This result shows that it is meaningful to place non-self evacuating patients on the lower floor with a time that is faster than 540 seconds, which is an evaluation criterion set using life Safety standards for human. This result is a time faster than the evaluation criteria of 540 seconds, which is set using the life safety standards, and it can be confirmed that it is meaningful to place non-self evacuating patients on the lower floor. Next, as a result of placing non-self evacuating patients from the first floor to the fourth floor, it was found that evacuation of all occupants required 460 seconds for the first floor, 834 seconds for the second floor, 1,508 seconds for the third floor, and 1,915 seconds for the fourth floor. These results indicate that the placement of non-self evacuating patients on the rest of the floors, except for the first floor, can lead to dangerous results in excess of 540 seconds, which is a flashover time. As a result, it is necessary to place non-self evacuating patients on a lower floor for safe evacuation. The study has limitations except for comparative analysis of changes in evacuation time due to changes in the number of workers at eldery care hospitals and situations in which fire-fighting facilities such as sprinkler facilities operated. It is necessary to study the evacuation time linked to the operation of the fire-fighting facilities and the evacuation time according to the change in the number of workers in the future.
        4,000원
        44.
        2020.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The performance enhancement of various damping systems from natural hazards has become an highly important issue in engineering field. In this paper, ENTA hysteretic dampers were tested under cyclic loadings to evaluate their performance in terms of ductility and energy dissipation. The test results showed that the hysteretic dampers are effective damping systems to enhance the buildings performance for remodeling and retrofit of buildings. Also, the hysteretic dampers were modeled in FEM(Finite Element Method) structural analysis program. As comparing the computer modeling and the experiment, this study model reflects the nonlinear behavior of steel and derives the hysteresis loop.
        4,000원
        45.
        2020.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The field experiment was carried out to evaluate changes of dry matter productivity and feed value of Italian ryegrass and triticale at different growth stages in Wonju from 2018 to 2019. Italian ryegrass and triticale forages were harvested at an interval of seven days from May to June. The dry matter yield of Italian ryegrass with 7,870 kg/ha harvested on May 16 was significantly higher than that harvested on May 3 and May 9. The dry matter yield of triticale with 12,050 kg/ha harvested on June 7 was significantly higher than that harvested from May 3 to May 16. The crude protein yields harvested on May 16 were 890 kg/ha for Italian ryegrass and 1,103 kg/ha for triticale and were significantly higher than those harvested on May 3 and May 9. The total digestible nutrient yield(TDN) of Italian ryegrass with 5,223 kg/ha harvested on May 16 was significantly higher than that harvested on May 3 and May 9. The total digestible nutrient yield of triticale with 8,277 kg/ha harvested on June 7 was significantly higher than that harvested during May, but not different from that harvested after June 7. Considering the dry matter yield, crude protein yield and total digestible nutrient yield, it is suggested that the optimal harvesting times for Italian ryegrass and triticale seem to be May 16 and June 7, respectively.
        4,000원
        49.
        2019.06 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        현재 영국의 정당은 보수당과 노동당으로 기본적으로 ‘이념정당’이다. 미국의 정당은 민주당과 공화당으로 기본적으로 ‘정책정당’이다. 민주당 은 1930년대 세계 대공황과 수정자본주의를 거쳐 “정부의 시장개입 허 용(변화 허용)”, 반대로 공화당은 “정부의 시장개입 최소화(변화 반대)” 로 구별될 수 있다. 한국의 양대 정당은 현재 ‘이념정당’이라고 할 수도 없고 ‘정책정당’으로 성공했다고 할 수도 없다. 여러 학자들이 한국의 보수정당의 나아갈 길에 대해서 미국의 공화당보다는 영국의 보수당에서 배울 것이 많다고 이야기하고 있다. 극단적 보수보다는 “변화하는 보수” 따뜻한 보수“ 등 온건한 보수를 새로운 방향으로 내세우고 있다. 필자는 대북정책에 있어서는 극단적 보수가 필요하고 다른 분야에 있어서는 온건한 보수나 중도적 노선이 필요하다고 생각한다.
        5,800원
        50.
        2019.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 케이지와 평사 사육환경이 산란종계의 생산성에 미치는 영향을 알아보고자 실시하였다. 케 이지 또는 평사 사육환경을 제외한 모든 환경 조건은 동일한 산란종계 무창 계사를 선정하여 진행하였 다. 총 48주간 산란 종계의 산란율, 폐사율, 수정율 및 부화율을 측정하였다. 산란초기 산란율은 케이 지 사육 환경에서 높았으나, 전 구간을 보았을 때 37주 이후부터는 평사 사육이 월등히 높게 나타났다. 폐사율은 암컷 종계의 누적 폐사율에는 유의한 차이가 없었지만, 수컷의 폐사율은 케이지 사육환경에서 유의적으로 높게 조사되었다. 수정율은 전 구간 평사 사육이 월등히 높게 나타났다. 부화율에서도 평사 사육이 케이지 사육보다 높게 나타났다. 본 연구결과 평사 사육방식이 케이지 사육방법보다 산란종계의 수정율, 부화율 및 폐사율에서 우수한 것으로 조사되었다.
        4,000원
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