• CLOSED
    December 16 12:00am
    Closed more »
  • Holiday Classic
    December 16 7:00am
    Columbus North Athletics sponsored swim meet. more »
  • IU HCOP Saturday Senior Academy
    December 16 10:00am
    The Saturday Senior Academy participants will receive information about health careers that will halp them make future career choices.  They will participate in on-site and off-site visits.  IU HCOP mentors will be present at all times.  more »
  • CLOSED
    December 17 12:00am
    The competition lap pool for lap swim is closed. more »
  • Holiday Training
    December 18 12:00am
    Holiday Training more »
Saturday, December 16, 2017
    IU Calendar




    • CLOSED
      December 16 12:00am
      Closed more »
    • Holiday Classic
      December 16 7:00am
      Columbus North Athletics sponsored swim meet. more »
    • IU HCOP Saturday Senior Academy
      December 16 10:00am
      The Saturday Senior Academy participants will receive information about health careers that will halp them make future career choices.  They will participate in on-site and off-site visits.  IU HCOP mentors will be present at all times.  more »
    • CLOSED
      December 17 12:00am
      The competition lap pool for lap swim is closed. more »
    • Holiday Training
      December 18 12:00am
      Holiday Training more »
    Saturday, December 16, 2017
      IU Calendar




      • CLOSED
        December 16 12:00am
        Closed more »
      • Holiday Classic
        December 16 7:00am
        Columbus North Athletics sponsored swim meet. more »
      • IU HCOP Saturday Senior Academy
        December 16 10:00am
        The Saturday Senior Academy participants will receive information about health careers that will halp them make future career choices.  They will participate in on-site and off-site visits.  IU HCOP mentors will be present at all times.  more »
      • CLOSED
        December 17 12:00am
        The competition lap pool for lap swim is closed. more »
      • Holiday Training
        December 18 12:00am
        Holiday Training more »
      Saturday, December 16, 2017
        IU Calendar




        • CLOSED
          December 16 12:00am
          Closed more »
        • Holiday Classic
          December 16 7:00am
          Columbus North Athletics sponsored swim meet. more »
        • IU HCOP Saturday Senior Academy
          December 16 10:00am
          The Saturday Senior Academy participants will receive information about health careers that will halp them make future career choices.  They will participate in on-site and off-site visits.  IU HCOP mentors will be present at all times.  more »
        • CLOSED
          December 17 12:00am
          The competition lap pool for lap swim is closed. more »
        • Holiday Training
          December 18 12:00am
          Holiday Training more »
        Saturday, December 16, 2017

          About This Event

          Summary

          Speaker:Dr. Mark Alber, Department of Applied and Computational Mathematic and Statistics, University of Notre Dame

          3:00 pm: Refreshments in LD 259

          3:30 pm: Colloquium in LD 229


          The ability of animals to self-organize into remarkable patterns of movement is seen throughout nature from herds of large mammals, to flocks of birds, schools of fish, and swarms of insects. Remarkably, patterns of collective movement can be seen even in the simplest forms of life such as bacteria. M. xanthus are common soil bacteria that are among the most "social" bacteria in nature. In this talk clustering mechanism of swarming M. xanthus will be described using combination of experimental movies and model simulations. Population of bacteria P. aeruginosa, main infection in hospitals, will be also shown to propagate as high density waves that move symmetrically as rings within swarms towards the extending tendrils. Biologically-justified cell-based multiscale model simulations suggest a mechanism of wave propagation as well as branched tendril formation at the edge of the population that depend upon competition between the changing viscosity of the bacterial liquid suspen  sion and the liquid film boundary expansion caused by Marangoni forces. The model predictions of wave speed and swarm expansion rate as well as cell alignment in tendrils were confirmed experimentally. In the second half of the talk, derivation of continuous limits of discrete stochastic dynamical systems describing cell aggregation will be described in the form of reaction-diffusion and nonlinear diffusion equations. Existence and stability of different classes of solutions of such equations will be also discussed.

          Note:  If you would like to meet with Dr. Alber, please contact Alexey Kuznetsov at askuznet@iupui.edu.

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          Event Schedule

          There are no upcoming dates for this event.

          IU Calendar




          • CLOSED
            December 16 12:00am
            Closed more »
          • Holiday Classic
            December 16 7:00am
            Columbus North Athletics sponsored swim meet. more »
          • IU HCOP Saturday Senior Academy
            December 16 10:00am
            The Saturday Senior Academy participants will receive information about health careers that will halp them make future career choices.  They will participate in on-site and off-site visits.  IU HCOP mentors will be present at all times.  more »
          • CLOSED
            December 17 12:00am
            The competition lap pool for lap swim is closed. more »
          • Holiday Training
            December 18 12:00am
            Holiday Training more »
          Saturday, December 16, 2017