Staff View: Impact of risk preferences on evacuee behavior and attention distribution in urban underground space evacuations

Impact of risk preferences on evacuee behavior and attention distribution in urban underground space evacuations

Evacuation and conducting emergency rescue operations in underground spaces pose substantial challenges. However, limited work has been done to investigate how evacuees' heterogeneity influence the evacuation efficiency. In this study, we conducted virtual environment experiment and on-site exp...

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Main Authors:	Wei, Yixuan, Zhang, Yixing, Xu, Yifei, Wang, Shu, Liu, Jianguo, Jin, Longzhe, Ou, Shengnan, Pan, Song, Liu, Yiqiao
Format:	Article
Published:	Elsevier 2024
Subjects:	TA Engineering (General). Civil engineering (General) TH Building construction
Online Access:	http://eprints.um.edu.my/45416/ https://doi.org/10.1016/j.physa.2024.129698
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spelling	my.um.eprints.454162024-10-16T07:33:59Z http://eprints.um.edu.my/45416/ Impact of risk preferences on evacuee behavior and attention distribution in urban underground space evacuations Wei, Yixuan Zhang, Yixing Xu, Yifei Wang, Shu Liu, Jianguo Jin, Longzhe Ou, Shengnan Pan, Song Liu, Yiqiao TA Engineering (General). Civil engineering (General) TH Building construction Evacuation and conducting emergency rescue operations in underground spaces pose substantial challenges. However, limited work has been done to investigate how evacuees' heterogeneity influence the evacuation efficiency. In this study, we conducted virtual environment experiment and on-site experiment to analyze the physical behavior and attention distribution of evacuees with different risk preferences during route selections. A total of 30 participants were clustered into three groups: Risk Averter (RA), Risk Neuter (RN) and Risk Seeker (RS), based on the proportion of choosing safe detours. Eye metrics analysis revealed that RA allocated more time to gaze at risk elements, whereas RS tended to pay more attention to the route distance (P =0.003). The total fixation time for RA and RS was about 300 ms longer than RN (P =0.007), indicating that RN exhibited more cautious behavior pattern when selecting an evacuation route. In addition, all participants displayed a noticeable gaze bias towards potential choices during the decision-making process. Specifically, gaze likelihood increased and exceeded 50% at 300-400 ms before decisions were made. Additionally, evacuation models were established based on AnyLogic to investigate the influence of evacuees' risk preference on evacuation efficiency. The evacuation simulation results demonstrated a significant improvement in evacuation efficiency when all evacuees adopted a risk-averse approach. This resulted in a reduction of evacuation time by 12.07-28.84% compared to the benchmark condition. The findings offer valuable insights into the behavior prediction in the evacuation simulation and emergency management in urban underground spaces. Elsevier 2024-04 Article PeerReviewed Wei, Yixuan and Zhang, Yixing and Xu, Yifei and Wang, Shu and Liu, Jianguo and Jin, Longzhe and Ou, Shengnan and Pan, Song and Liu, Yiqiao (2024) Impact of risk preferences on evacuee behavior and attention distribution in urban underground space evacuations. Physica A-Statistical Mechanics And Its Applications, 640. p. 129698. ISSN 0378-4371, DOI https://doi.org/10.1016/j.physa.2024.129698 <https://doi.org/10.1016/j.physa.2024.129698>. https://doi.org/10.1016/j.physa.2024.129698 10.1016/j.physa.2024.129698
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	TA Engineering (General). Civil engineering (General) TH Building construction
spellingShingle	TA Engineering (General). Civil engineering (General) TH Building construction Wei, Yixuan Zhang, Yixing Xu, Yifei Wang, Shu Liu, Jianguo Jin, Longzhe Ou, Shengnan Pan, Song Liu, Yiqiao Impact of risk preferences on evacuee behavior and attention distribution in urban underground space evacuations
description	Evacuation and conducting emergency rescue operations in underground spaces pose substantial challenges. However, limited work has been done to investigate how evacuees' heterogeneity influence the evacuation efficiency. In this study, we conducted virtual environment experiment and on-site experiment to analyze the physical behavior and attention distribution of evacuees with different risk preferences during route selections. A total of 30 participants were clustered into three groups: Risk Averter (RA), Risk Neuter (RN) and Risk Seeker (RS), based on the proportion of choosing safe detours. Eye metrics analysis revealed that RA allocated more time to gaze at risk elements, whereas RS tended to pay more attention to the route distance (P =0.003). The total fixation time for RA and RS was about 300 ms longer than RN (P =0.007), indicating that RN exhibited more cautious behavior pattern when selecting an evacuation route. In addition, all participants displayed a noticeable gaze bias towards potential choices during the decision-making process. Specifically, gaze likelihood increased and exceeded 50% at 300-400 ms before decisions were made. Additionally, evacuation models were established based on AnyLogic to investigate the influence of evacuees' risk preference on evacuation efficiency. The evacuation simulation results demonstrated a significant improvement in evacuation efficiency when all evacuees adopted a risk-averse approach. This resulted in a reduction of evacuation time by 12.07-28.84% compared to the benchmark condition. The findings offer valuable insights into the behavior prediction in the evacuation simulation and emergency management in urban underground spaces.
format	Article
author	Wei, Yixuan Zhang, Yixing Xu, Yifei Wang, Shu Liu, Jianguo Jin, Longzhe Ou, Shengnan Pan, Song Liu, Yiqiao
author_facet	Wei, Yixuan Zhang, Yixing Xu, Yifei Wang, Shu Liu, Jianguo Jin, Longzhe Ou, Shengnan Pan, Song Liu, Yiqiao
author_sort	Wei, Yixuan
title	Impact of risk preferences on evacuee behavior and attention distribution in urban underground space evacuations
title_short	Impact of risk preferences on evacuee behavior and attention distribution in urban underground space evacuations
title_full	Impact of risk preferences on evacuee behavior and attention distribution in urban underground space evacuations
title_fullStr	Impact of risk preferences on evacuee behavior and attention distribution in urban underground space evacuations
title_full_unstemmed	Impact of risk preferences on evacuee behavior and attention distribution in urban underground space evacuations
title_sort	impact of risk preferences on evacuee behavior and attention distribution in urban underground space evacuations
publisher	Elsevier
publishDate	2024
url	http://eprints.um.edu.my/45416/ https://doi.org/10.1016/j.physa.2024.129698
_version_	1814047556153376768
score	13.211869

Impact of risk preferences on evacuee behavior and attention distribution in urban underground space evacuations

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