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UBC Math Dept
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MITACS/PIMS Mathematical Biology and related seminars
February, 2010
Tuesday,
February 9
Pik-Yin Lai -- 2:00 pm in WMAX 110
National Central University, Taiwan
Frequency Variation and Waves in Coupled Excitable Systems
Abstract
Two topics will covered in this talk. The first part concerns the dynamics of coupled excitable FitzHugh-Nagumo elements in the presence of noise, which is used to model the frequency variations in beating cardiac cultures. As the coupling strength increases, the frequency increases with a peak which is associated with the synchronization of the elements. The physical mechanism of frequency enhancement is due to the variation of the potential barrier for firing as the coupling changes and can be estimated by Kramer's escape rate theory which shows good agreement with simulations. The second part is about waves in phase coupled excitable medium. The corresponding phase diagrams for stable plane waves and spiral waves are obtained by simulations. This discrete model corresponds to an excitable medium with zero-refractoriness and in the continuum limit supports zero-core spiral waves.
March, 2010
Tuesday,
March 2
Joe Wakano -- 2:00 pm in WMAX 110
Meiji University
Chaotic Dynamics in Spatial Public Goods Games
Abstract
TBA
Tuesday,
March 9
Michael Gilchrist -- 2:00 pm in WMAX 110
University of Tennessee at Knoxville
Using Mathematical Models to Quantify Molecular Adaptation in Protein Production Costs
Abstract
TBA
Tuesday,
March 16
David Odde -- 2:00 pm in WMAX 110
Department of Biomedical Engineering, University of Minnesota
TBA
Abstract
TBA
April, 2010
Tuesday,
April 6
Elissa Schwartz -- 2:00 pm in WMAX 110
Washington State University
TBA
Abstract
TBA

Seminar series sponsored by PIMS and MITACS.

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