信息对人群疏散动力学行为的影响(田欢欢; 曾广湘; 薛郁)

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信息对人群疏散动力学行为的影响水利论文 B!I5a:lG

*H,N9O"pq;r0【作者】田欢欢; 曾广湘; 薛郁 【作者单位】广西大学物理科学与工程技术学院

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7gA.P"D:v#dp0【论文摘要】 本研究应用四向无后退的偏向格子气模型研究人群疏散过程,并应用改进的 Sznajd 模型研究危险信息在人群疏散过程中的传播过程。结果表明,在开放边界条件下,小密度就会引起交通堵塞,由于信息传播速度很快,堵塞现象很快就消散了,其平均速度发生了一个很小的振荡;在周期边界条件下,较小的初始密度,也出现了堵塞现象,由于人员不能离开这个系统,堵塞现象不会消失,平均速度由1变为0。水利论文5N,bt/]c3_\q

~%K)E1o M3sT G HSe0【英文论文摘要】 The influence of information on the pedestrian in evacuation process is investigated on the square lattice by the use of the lattice gas model of biased random walkers without the back step. It is found that the jamming phenomenon occurs when the total entrance density is small under the open boundary,but the jam dissolve quickly because the spreading of the panic information is very fast.The mean velocity decrease when the panic source is added.For a moment,the mean velocity increases and approaches 1.0.Under the period boundary,the jamming phenomenon occurs when the initial density is small,too.Because the walkers are not removed from the system,the jam does not dissolve and induces the decrease of the mean velocity from 1 to 0.水利论文 k$r*To2v)J7l"tx AK

zG^D)fF2J0【论文关键词】 Sznajd 模型; 信息; 人群疏散; 格子气水利论文Y1S:].B-|
【英文论文关键词】 Sznajd model; information; evacuation; lattice gas
s-F'Q\n0K[0【基金】国家自然科学基金(No.10662002和No.10532060);; 国家重点基础研究发展计划资助(No.2006CB705500);; 广西自然科学基金(NO.0640003);; 广西“新世纪十百千人才工程”专项资金资助(No.2005205).

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TAG: 动力学 田欢欢 薛郁 曾广湘 人群
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