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Pedestrian dynamics at the running of the bulls evidence an inaccessible region in the fundamental diagram [Applied Physical Sciences]
Proceedings of the National Academy of Sciences of the United States of America ( IF 9.4 ) Pub Date : 2021-12-14 , DOI: 10.1073/pnas.2107827118
Daniel R Parisi 1 , Alan G Sartorio 2 , Joaquín R Colonnello 2 , Angel Garcimartín 3 , Luis A Pugnaloni 4 , Iker Zuriguel 3
Affiliation  

We characterize the dynamics of runners in the famous “Running of the Bulls” Festival by computing the individual and global velocities and densities, as well as the crowd pressure. In contrast with all previously studied pedestrian systems, we unveil a unique regime in which speed increases with density that can be understood in terms of a time-dependent desired velocity of the runners. Also, we discover the existence of an inaccessible region in the speed–density state diagram that is explained by falls of runners. With all these ingredients, we propose a generalization of the pedestrian fundamental diagram for a scenario in which people with different desired speeds coexist.



中文翻译:

公牛奔跑时的行人动力学证明了基本图中无法进入的区域 [应用物理科学]

我们通过计算个人和全球的速度和密度以及人群压力来描述著名的“奔牛节”中跑步者的动态。与之前研究的所有行人系统相比,我们揭示了一种独特的机制,其中速度随着密度的增加而增加,可以根据与时间相关的跑步者期望速度来理解。此外,我们发现速度-密度状态图中存在一个无法到达的区域,这可以用跑步者的跌倒来解释。有了所有这些成分,我们提出了行人基本图的概括,用于具有不同期望速度的人共存的场景。

更新日期:2021-12-07
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