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@ARTICLE{Feldmann:1024563,
author = {Feldmann, Sina and Chatagnon, Thomas and Adrian, Juliane
and Pettré, Julien and Seyfried, Armin},
title = {{T}emporal segmentation of motion propagation in response
to an external impulse},
journal = {Safety Science},
volume = {175},
issn = {0925-7535},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2024-02239},
pages = {106512},
year = {2024},
abstract = {In high-density crowds, local motion can propagate,
amplify, and lead to macroscopic phenomena,
including"density waves". These density waves only occur
when individuals interact, and impulses are transferred
toneighbours. How this impulse is passed on by the human
body and which effects this has on individuals isstill not
fully understood. To further investigate this, experiments
focusing on the propagation of a push wereconducted within
the EU-funded project CrowdDNA. In the experiments the crowd
is greatly simplified byfive people lining up in a row. The
rearmost person in the row was pushed forward in a
controlled mannerwith a punching bag. The intensity of the
push, the initial distance between participants and the
initial armposture were varied. Collected data included side
view and top view video recordings, head trajectories,
3Dmotion using motion capturing (MoCap) suits as well as
pressure measured at the punching bag. With a hybridtracking
algorithm, the MoCap data are combined with the head
trajectories to allow an analysis of the motionof each limb
in relation to other persons.The observed motion of the body
in response to the push can be divided into three phases.
These are (i)receiving an impulse, (ii) receiving and
passing on an impulse, and (iii) passing on an impulse.
Using the 3DMoCap data, we can identify the start and end
times of each phase. To determine when a push is passed
on,the forward motion of the person in front has to be
considered. The projection of the center of mass relativeto
the initial position of the feet is a measure of the extent
to which a person is displaced from the restposition.
Specifying the timing of these phases is particularly
important to distinguish between different typesof physical
interactions. Our results contribute to the development and
validation of a pedestrian model foridentifying risks due to
motion propagation in dense crowds.},
month = {Jun},
date = {2023-06-28},
organization = {Pedestrian and Evacuation Dynamics
2023, Eindhoven, 28 Jun 2023 - 30 Jun
2023},
cin = {IAS-7},
ddc = {610},
cid = {I:(DE-Juel1)IAS-7-20180321},
pnm = {5111 - Domain-Specific Simulation $\&$ Data Life Cycle Labs
(SDLs) and Research Groups (POF4-511) / CrowdDNA -
TECHNOLOGIES FOR COMPUTER-ASSISTED CROWD MANAGEMENT
(899739)},
pid = {G:(DE-HGF)POF4-5111 / G:(EU-Grant)899739},
typ = {PUB:(DE-HGF)8 / PUB:(DE-HGF)16},
UT = {WOS:001220948200001},
doi = {10.1016/j.ssci.2024.106512},
url = {https://juser.fz-juelich.de/record/1024563},
}