Sannolikhet- och statistikseminarium: Cows on the move

  • Datum:
  • Plats: Ångströmlaboratoriet 64119
  • Föreläsare: Maria Deijfen
  • Kontaktperson: Fiona Skerman
  • Seminarium

Abstract: Consider an epidemic in a population of moving particles. The particles may infect each other upon direct contact, but may also be infected via contaminated locations. We formulate a simple model incorporating this phenomenon and demonstrate that the presence of site contamination may have an impact on the epidemic spread. Specifically, we show that site contamination can cause a subcritical model -- that is, a model where the infection cannot survive indefinitely -- to become supercritical. Conversely, measures aimed at controlling site contamination have the potential to make a supercritical model subcritical. We also formulate a number of open problems for our model, and other versions of it.