[This is the old program from WS 2008/09. The current program and contact information can be found here.]

17 October 2008, 16:00

Sergio Alonso (Physikalisch-Technische Bundesanstalt, Berlin)
Effective medium theory for heterogeneous reaction-diffusion systems [Abstract]

31 October 2008, 16:00

Tetsuo Ueda (Research Institute for Electronic Science, Hokkaido University, Japan)
Nonlinear processes in Physarum: Towards an understanding of the cellular behavioral intelligence [Abstract]

14 November 2008, 16:00

Alain Karma (Department of Physics, Northeastern University, Boston, USA)
Spatiotemporal patterns of voltage and calcium signaling in heart cells and tissue [Abstract]

21 November 2008, 16:00

Alexander V. Panfilov (Department of Theoretical Biology, Utrecht University, The Netherlands)
Modeling mechano-electric feedback in the heart using reaction-diffusion mechanics systems [Abstract]

28 November 2008, 16:00

Karsten Peters (Institut für Wirtschaft und Verkehr, Technische Universität Dresden)
Structural properties of functional networks in biological and technical systems [Abstract]

05 December 2008, 16:00 Haber-Villa

Takao Ohta (Department of Physics, Kyoto University, Japan)
External forcing and feedback control of nonlinear dissipative waves

Abstract:
The dynamics of traveling waves are studied analytically and numerically in a nonlinear dissipative system where phase separation undergoes simultaneously with chemical reactions. Spatio-temporal forcing and feedback control are applied to the traveling waves. The feedback is introduced such that a term of the space shift of the concentration wave is added without time delay in the time-evolution equation. Synchronization and modulation of the traveling waves under external forcing and reversal of the propagation direction and a cease of propagation under feedback forcing are analyzed numerically. These phenomena can be understood almost completely by a theory based on the phase dynamics.
(1) H. Tokuda, V. S. Zykov and T. Ohta, Phys. Rev. E75, (2007) 066203
(2) Y. Tonosak, H. Tokuda, V. S. Zykov and T. Ohta, EuroPhys. Lett. 83 (2008) 50011

13 February 2009, 16:00

Frank Spahn (LS Nichtlineare Dynamik, Institut für Physik und Astronomie, Universität Potsdam)
What tell "propellers" in Saturns rings about planet formation? [Abstract]