Spatial memory enhances the evacuation efficiency of virtual pedestrians under poor visibility condition

doi:10.1088/1674-1056/27/3/038901

中国物理B ›› 2018, Vol. 27 ›› Issue (3): 38901-038901.doi: 10.1088/1674-1056/27/3/038901

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Spatial memory enhances the evacuation efficiency of virtual pedestrians under poor visibility condition

Yi Ma(马毅), Eric Wai Ming Lee(李伟民), Meng Shi(施朦), Richard Kwok Kit Yuen(袁国杰)

1 Institute for Disaster Management and Reconstruction, Sichuan University, Chengdu 610207, China;
2 Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon, Hong Kong, China

收稿日期:2017-08-01 修回日期:2017-12-17 出版日期:2018-03-05 发布日期:2018-03-05
通讯作者: Yi Ma E-mail:yima23-c@my.cityu.edu.hk
基金资助:
Project supported by the Research Grants Council of the Hong Kong Special Administrative Region, China (Grant No. 11203615).

Spatial memory enhances the evacuation efficiency of virtual pedestrians under poor visibility condition

Yi Ma(马毅)^1,2, Eric Wai Ming Lee(李伟民)², Meng Shi(施朦)², Richard Kwok Kit Yuen(袁国杰)²

1 Institute for Disaster Management and Reconstruction, Sichuan University, Chengdu 610207, China;
2 Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon, Hong Kong, China

Received:2017-08-01 Revised:2017-12-17 Online:2018-03-05 Published:2018-03-05
Contact: Yi Ma E-mail:yima23-c@my.cityu.edu.hk
Supported by:
Project supported by the Research Grants Council of the Hong Kong Special Administrative Region, China (Grant No. 11203615).

摘要/Abstract

摘要： Spatial memory is a critical navigation support tool for disoriented evacuees during evacuation under adverse environmental conditions such as dark or smoky conditions. Owing to the complexity of memory, it is challenging to understand the effect of spatial memory on pedestrian evacuation quantitatively. In this study, we propose a simple method to quantitatively represent the evacuee's spatial memory about the emergency exit, model the evacuation of pedestrians under the guidance of the spatial memory, and investigate the effect of the evacuee's spatial memory on the evacuation from theoretical and physical perspectives. The result shows that (i) a good memory can significantly assist the evacuation of pedestrians under poor visibility conditions, and the evacuation can always succeed when the degree of the memory exceeds a threshold (φ>0.5); (ii) the effect of memory is superior to that of “follow-the-crowd” under the same environmental conditions; (iii) in the case of multiple exits, the difference in the degree of the memory between evacuees has a significant effect (the greater the difference, the faster the evacuation) for the evacuation under poor visibility conditions. Our study provides a new quantitative insight into the effect of spatial memory on crowd evacuation under poor visibility conditions.

关键词: crowd evacuation, memory, visibility, social force model

Abstract: Spatial memory is a critical navigation support tool for disoriented evacuees during evacuation under adverse environmental conditions such as dark or smoky conditions. Owing to the complexity of memory, it is challenging to understand the effect of spatial memory on pedestrian evacuation quantitatively. In this study, we propose a simple method to quantitatively represent the evacuee's spatial memory about the emergency exit, model the evacuation of pedestrians under the guidance of the spatial memory, and investigate the effect of the evacuee's spatial memory on the evacuation from theoretical and physical perspectives. The result shows that (i) a good memory can significantly assist the evacuation of pedestrians under poor visibility conditions, and the evacuation can always succeed when the degree of the memory exceeds a threshold (φ>0.5); (ii) the effect of memory is superior to that of “follow-the-crowd” under the same environmental conditions; (iii) in the case of multiple exits, the difference in the degree of the memory between evacuees has a significant effect (the greater the difference, the faster the evacuation) for the evacuation under poor visibility conditions. Our study provides a new quantitative insight into the effect of spatial memory on crowd evacuation under poor visibility conditions.

Key words: crowd evacuation, memory, visibility, social force model

中图分类号: (Economics; econophysics, financial markets, business and management)

89.65.Gh

89.40.-a (Transportation) 07.05.Tp (Computer modeling and simulation) 05.65.+b (Self-organized systems)

马毅, 李伟民, 施朦, 袁国杰. Spatial memory enhances the evacuation efficiency of virtual pedestrians under poor visibility condition[J]. 中国物理B, 2018, 27(3): 38901-038901.

Yi Ma(马毅), Eric Wai Ming Lee(李伟民), Meng Shi(施朦), Richard Kwok Kit Yuen(袁国杰). Spatial memory enhances the evacuation efficiency of virtual pedestrians under poor visibility condition[J]. Chin. Phys. B, 2018, 27(3): 38901-038901.

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Spatial memory enhances the evacuation efficiency of virtual pedestrians under poor visibility condition

Spatial memory enhances the evacuation efficiency of virtual pedestrians under poor visibility condition

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