• 제목/요약/키워드: Damage Spread

검색결과 350건 처리시간 0.026초

화재확산 저감을 위한 랙크 내 수평차단막 적용에 관한 연구 (Application of Horizontal Barrier on a Rack to Reduce Fire Spread)

  • 여인환;조규환
    • 한국화재소방학회논문지
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    • 제31권4호
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    • pp.71-79
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    • 2017
  • 적재밀도가 높으며 수직적인 적재형태를 가지는 랙크식 창고는 화재발생 시 그 피해가 매우 심각하다. 이에 미국, 일본에서는 자국의 랙크식 창고 실정에 맞는 In-Rack 스프링클러 및 수평차단막 등을 적용하여 화재확산을 최소화하는데 노력하고 있으나 국내의 경우, 그와 관련한 연구 및 제도가 전무한 실정이다. 이에 본 연구에서는 발화위치 및 수평차단막 설치간격에 따른 화재특성 확인을 위해 국내 랙크식 창고 실정을 반영한 표준랙크를 대상으로 축소모델 화재시험을 수행하였다. 그 결과, 수평차단막의 설치간격을 밀접하게 또는 빈번하게 할수록 약 30%씩의 수직 화재확산 억제성능이 발휘되는 것을 확인하였다. 아울러 수평차단막을 경계로 상하부의 온도를 측정한 결과, 차단막이 설치된 경우가 그렇지 않은 경우에 비해 온도분포가 약 2~4배 이상 높은 것으로 나타나 수평차단막의 설치가 In-Rack 스프링클러의 조기 작동에 도움을 줄 것으로 판단된다.

RCP 시나리오에 따른 해양교란생물 유령멍게(Ciona robusta)의 서식지 분포 예측 (Prediction of the Suitable Habitats of Marine Invasive Species, Ciona robusta based on RCP Scenarios)

  • 박주언;홍진솔;김동건;윤태중;신숙
    • 환경생물
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    • 제36권4호
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    • pp.687-693
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    • 2018
  • The active development of the global marine trade industries has been known to increase the inflows of marine invasive species and harmful organisms into the ecosystem, and the marine ecological disturbances. One of these invasive species, Ciona robusta, has now spread to the Korea Strait, the East Sea, and Jeju Island in connection with the climate change but not the Yellow Sea in Korea. Currently, the spread and distribution of C. robusta is increasingly damaging aquaculture and related facilities. Therefore, this study aims to identify the spread of C. robusta and potential habitats and to secure a data for the prevention of effective management measures due to climate change as well as damage the reduction in future through the prediction of spread. We used environmental variables in BioOracle. Also, the potential habitat and distribution of C. robusta was predicted using MaxEnt, a species distribution model. Two different RCP scenarios(4.5 and 8.5) were specified to predict the future distributions of C. robusta. The results showed that the biggest environmental factor affecting the distribution of C. robusta was the salinity as well as the highest distribution and potential habitats existent in the East Sea and around Jeju Island.

IoMT 환경을 이용한 질병 예방 모니터링 시스템에 관한 연구 (A Study on the Disease Prevention Monitoring System Using IoMT Environment)

  • 심성호
    • 산업융합연구
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    • 제21권2호
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    • pp.111-116
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    • 2023
  • 최근 바이러스 감염병 및 새로운 질병은 한 지역에 국한되는 것이 아니라 전 세계적으로 확산되어 경제적, 사회적으로 심각한 피해를 일으키고 있다. 또한, 새로운 질병의 발현 주기가 짧고, 확산 속도도 빨라지고 있다. 질병에 대한 확산을 막기 위해 격리, 폐쇄 등 질병 발생 후 수동적인 형태의 대응이 우선시 되고 있다. 이러한 형태의 대응은 질병 확산 방지에 근본적인 대응으로는 부족한 부분이 많이 있다. 이에, 본 연구에서는 새로운 질병 발생 정보를 포함한 질병 예방 모니터링 시스템을 제안한다. 본 연구에서는 IoMT 환경 구축을 통해 질병 정보와 사용자의 정보를 수집한다. devices를 이용한 정보 수집은 사용자의 생체정보와 질병 서버에 등록된 데이터를 수집하고 분류한다. IoMT 환경에서는 사용자의 데이터를 수집하여 사용자 질병 감염 여부를 평가하여 사용자에게 제공한다. 본 연구를 통해 개인의 질병 증상 정보를 제공하고, 질병 확산에 대한 능동적인 대응 방법을 제공할 수 있다.

Risk analysis of dioxin in human breast milk

  • Choi, Shin-Ai;Han, Jee-Yeun;Park, Jong-Sei
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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    • pp.160.1-160.1
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    • 2003
  • Persistent organic pollutants (POPs) have spread throughout the global environment to threaten human health and damage ecosystems. with evidence of POPs contamination in wildlife, human blood. and breast milk documented worldwide. Breast milk is an ideal medium for assessing exposures to POPs. POPs enter humans largely as contaminants of dietary animal products, where they sequester in adipose tissue, serum, and breast milk and equilibrate at similar levels on a fat weight basis. (omitted)

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시뮬레이션을 이용한 생물테러 발생에 따른 피해예측에 관한 연구 ­천연두를 중심으로­ (A Study on the Demage forecast of Biological Terrorism ­Focused on Smallpox­)

  • 김영훈;박정화;김태현;문성암
    • 한국국방경영분석학회지
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    • 제29권2호
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    • pp.26-44
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    • 2003
  • This study Is to forecast the damage of smallpox as a biological weapon and to measure the effect of potential responses (quarantine, vaccination and cure) to the spread of smallpox infection when a smallpox bioterrorism attack occurs. We designed the smallpox spreading simulation model through the literature study on a basis of some existing infectious disease models such as SIR, SEIR model by using Vensim program. In order to evaluate the performance of responses to smallpox, we measure the total infection population, infection sustaining duration, average infection rate and the infection spreading behavior of the smallpox. This study can help those who are related to the bioterrorism forecast the present and possible demage, and take more effective actions for minimizing the damage by smallpox bioterrorism.

이동형 화재 방재시스템의 통신네트워크 구축에 관한 연구 (A Study on Communication Network Construction of Portable Fire Prevention System)

  • 곽동걸;최신형;백원종;이춘수;길민식
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2016년도 전력전자학술대회 논문집
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    • pp.34-35
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    • 2016
  • This study is to minimize the damage and fire early warning and research on mobile communications network of the emergency fire alarm system based on the IoT to the transmission in real time. The spread of such systems can be expected to businesses expand to technology that can replace or complement existing fire fighting system, it is also expected to a large ripple effect as an important technology that can minimize the damage to real-time detect the ignition point.

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화재조사 측면에서의 화재진압 및 구조대원의 역할에 대한 연구 (A Study on the Role of Fire Fighting and Rescue Squad in terms of Fire Investigation)

  • 이승훈;이창우
    • 대한안전경영과학회:학술대회논문집
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    • 대한안전경영과학회 2012년 춘계학술대회
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    • pp.461-470
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    • 2012
  • Fire scene is mostly destroyed by the flames but fire fighter's fire suppression and rescue activities also destroys a substantail portion. Structures and furnitures which has already become weaken can be easily damaged. Or when structures built up by moving to another location, it's very hard to restore the original state. Also if it is restored, the object has no evidence that it has existed. In all scenes, the scene can't be preserved when quick extinguishment, rescue activities and preventation of fire spread is needed. On this paper, it reviewed the notes about the possibility of field damage by fire suppression and rescue squad's activities. Also it has reviewed the notes how to minimize the field damage by putting out fires and rescue activities by observing the precautions. The reviewed information will help to make guidelines for preserving the scene. By this, it is expected to make a field study exactly by collecting more valid evidence.

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일반철도 비상사태유형별 임시복구 표준화 및 표준운영절차 구축 방안 - 차량탈선을 중심으로 - (Development of Standardization and Standard Operation Procedures(SOP) of Temporary Restoration against Railway Incidents - Focused on Derailment Accident -)

  • 김준형;성덕룡;최승룡;박용걸
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2008년도 춘계학술대회 논문집
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    • pp.1340-1349
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    • 2008
  • This paper suggests to standardize railway accident restoration types as the standardized code and to develop standard operation procedures(SOP) for the efficient railway accident management and recovery system. First of all, occurred damage types as the existing railway accident types in both domestic and foreign cases have been carefully analyzed and then reclassified. Therefore, this study suggested the combination of 3 distinct code factors: restoration class, restoration object, and restoration location to standardize them. In addition, temporary restoration SOP will play a major role in the railway accident batabase management system and SOP for the damage limitation and the prevention of accident spread.

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철도비상사태유형별 임시복구 표준운영절차 시스템 개발 (Development of Standard Operation Procedures(SOP) System of Temporary Restoration against Railway Incidents)

  • 최승룡;고동춘;이상민;박용걸
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2009년도 춘계학술대회 논문집
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    • pp.1412-1425
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    • 2009
  • This paper suggests to standardize railway accident restoration types as the standardized code and to develop standard operation procedures(SOP) for the efficient railway accident management and recovery system. First of all, occurred damage types as the existing railway accident types in both domestic and foreign cases have been carefully analyzed and then reclassified. Therefore, this study suggested the combination of 3 distinct code factors: restoration class, restoration object, and restoration location to standardize them. In addition, temporary restoration SOP will play a major role in the railway accident database management system and SOP for the damage limitation and the prevention of accident spread.

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Seismic progressive collapse assessment of 3-story RC moment resisting buildings with different levels of eccentricity in plan

  • Karimiyan, Somayyeh;Moghadam, Abdolreza S.;Vetr, Mohammad G.
    • Earthquakes and Structures
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    • 제5권3호
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    • pp.277-296
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    • 2013
  • Margin of safety against potential of progressive collapse is among important features of a structural system. Often eccentricity in plan of a building causes concentration of damage, thus adversely affects its progressive collapse safety margin. In this paper the progressive collapse of symmetric and asymmetric 3-story reinforced concrete ordinary moment resisting frame buildings subjected to the earthquake ground motions are studied. The asymmetric buildings have 5%, 15% and 25% mass eccentricity. The distribution of the damage and spread of the collapse is investigated using nonlinear time history analyses. Results show that potential of the progressive collapse at both stiff and flexible edges of the buildings increases with increase in the level of asymmetry in buildings. It is also demonstrated that "drift" as a more easily available global response parameter is a good measure of the potential of progressive collapse rather than much difficult-to-calculate local response parameter of "number of collapse plastic hinges".