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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},
}