نتایج جستجو برای: care under fire

تعداد نتایج: 1669567  

2015
Xia Chen Guangyan Xu

As for multi-uninhabited aerial vehicle cooperative fire fighting problem, a multiuninhabited aerial vehicle cooperative control method was proposed based on consensus algorithm. multi-uninhabited aerial vehicle cooperative control problem was divided into two steps: 1) a multi-uninhabited aerial vehicle arrival simultaneous control strategy under influence of wind field based on consensus algo...

2011
Song Kai Wang Chao

In this paper the overall structure of forest fire monitoring system based on image analysis is designed and realized. The system includes three subsystems, which are the fire monitoring nodes based on image analysis, the forest fire prevention data center and remote monitoring terminal. It emphasizes the software and hardware realization of the fire monitoring nodes based on image analysis, an...

2010
Qasim Siddique

Fire modeling is used to understand and to predict possible fire behavior without getting burned. Fire models are used in different aspect of fire management. The increase in the number of forest fires in the last few years has forced governments to take precautions. Beside prevention, early intervention is also very important in fire fighting. If the fire fighters know where the fire will be i...

2014
Rebecca E. Hewitt Teresa N. Hollingsworth Stuart Chapin D. Lee

Climate-induced changes in the tundra fire regime are expected to alter shrub abundance and distribution across the Arctic. However, little is known about how fire may indirectly impact shrub performance by altering mycorrhizal symbionts. resprouting Betula nana shrubs across a fire-severity gradient after the largest tundra fire recorded in the Alaskan Arctic resolution. Variation in fungal co...

Journal: :پژوهش های روستایی 0
علیرضا دربان آستانه استادیار دانشکده جغرافیا دانشگاه تهران اسماعیل زیارتی معاون مدیر کل دفتر مطالعات و برنامه ریزی روستایی- سازمان شهرداری ها و دهیاری های کشور سارا جعفری دانشجوی کارشناسی ارشد جغرافیا و برنامه ریزی روستایی دانشگاه تهران رباب سائلی دانشجوی کارشناسی ارشد جغرافیا و برنامه ریزی روستایی دانشگاه تهران

introduction the fire services play a key role in safety issues for any country. the operations of the services have a high visibility since the public is aware of its own vulnerability and possibly vital reliance on the service. firemen and women are rightly admired, particularly as their intervention may carry a risk to their own lives. more generally, this service comes at a considerable cos...

2006
M. D. FLANNIGAN B. D. AMIRO K. A. LOGAN B. J. STOCKS B. M. WOTTON

Fire is the major stand-renewing disturbance in the circumboreal forest. Weather and climate are the most important factors influencing fire activity and these factors are changing due to human-caused climate change. This paper discusses and synthesises the current state of fire and climate change research and the potential direction for future studies on fire and climate change. In the future,...

2016
Emily S Hope Daniel W McKenney John H Pedlar Brian J Stocks Sylvie Gauthier

Climate-influenced changes in fire regimes in northern temperate and boreal regions will have both ecological and economic ramifications. We examine possible future wildfire area burned and suppression costs using a recently compiled historical (i.e., 1980-2009) fire management cost database for Canada and several Intergovernmental Panel on Climate Change (IPCC) climate projections. Area burned...

2016
Erica A.H. Smithwick Anthony L. Westerling Monica G. Turner William H. Romme Michael G. Ryan

More frequent fires under climate warming are likely to alter terrestrial carbon (C) stocks by reducing the amount of C stored in biomass and soil. However, the thresholds of fire frequency that could shift landscapes from C sinks to C sources under future climates and whether these are likely to be exceeded during the coming century are not known. We used the Greater Yellowstone Ecosystem (GYE...

2016
Taolin Zhang Xiaodong Zhou Lizhong Yang

This work investigated experimentally and theoretically the fire hazards of thermal-insulation materials used in diesel locomotives under different radiation heat fluxes. Based on the experimental results, the critical heat flux for ignition was determined to be 6.15 kW/m² and 16.39 kW/m² for pure polyurethane and aluminum-polyurethane respectively. A theoretical model was established for both ...

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