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Because the structure and function of a high-rise building is complex and the density of occupants in it is high, fire safety is still a worldwide difficult problem. Safety and timely evacuation is an important issue under fire in the high-rise buildings. Because it is impossible in fact to do experiments about fire safety evacuation in high-rise buildings, in this paper, a research framework based...
In a city, protecting units like police cars move around and protect places such as banks and residential buildings. Different places may have different requirements in how many protecting units should be nearby. If any place has less protecting units around than it requires, it is an unsafe place. This paper studies the Continuous Top-k Unsafe Places (CTUP) query, which continuously monitors the...
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