Pre-evacuation time for occupants and its effect on fire risk assessment;

火灾风险评估是减少和控制火灾的基本手段。

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We consider both time and space as resources, adopted the ideas of pre-allocating the resources, to avoid the congestion, and achieve the optimization of the overall evacuation time.

这些静态的方法难以做到充分利用路网道路资源，容易造成交通堵塞，从而难以达到疏散时间最优的目的。

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