[grads] [Sem-coll] Applied Math Seminars & Colloquium Next Week

Joe Millham jmillham at iit.edu
Fri Feb 26 13:09:05 CST 2010


Please join the Applied Math department for the following Seminars and
Colloquia.  All are welcome to attend, and refreshments will be served
at some events.  For a complete and updated listing of the
department's seminars, please visit the seminar webpage:
http://www.iit.edu/csl/am/colloquia/

Department Colloquium
Mark Alber, Notre Dame University
Monday, March 1, 2010   4:40 pm   E1 106
"Multiscale Modeling in Biology"
See abstract below
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Stochastic & Multiscale Modeling and Computation Seminar
Xiaofan Li, IIT - Applied Math
Monday, March 1, 2010   11:30 am  E1 244
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Meshfree Methods Seminar
Fred J. Hickernell, IIT-Applied Math
Monday, March 1, 2010   1:50 pm   AM 222
"The Tractability of Gaussian Kernel Function Approximation with
Nonhomogeneous Shape Parameter"
See abstract below
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Department Colloquium
Mark Alber, Notre Dame University
"Multiscale Modeling in Biology"
Abstract:
A multiscale model of blood clot formation will be described which
combines a detailed tissue factor pathway submodel of blood
coagulation, a blood flow submodel and a stochastic discrete cell
submodel [1,2]. It will be shown that low levels of FVII in blood
result in a significant delay in thrombin production demonstrating
that FVII plays an active role in promoting clot development at an
early stage. We will also describe a new subcellular element method
for simulating cellular  blood components. In addition, multiscale
models of chemotactic cell motion [3] and bacterial swarming will be
discussed [4].



1. Xu, Z., J. Lioi, J. Mu, X. Liu, M.M. Kamocka, E.D. Rosen, D.Z. Chen
and M.S. Alber, A Multiscale Model of Venous Thrombus Formation with
Surface-Mediated Control of Blood Coagulation Cascade, Biophysical
Journal (to appear).


2. Xu, Z., Chen, N., , Kamocka, M.M., Rosen, E.D., and M.S. Alber
[2008], Multiscale Model of Thrombus Development, Journal of the Royal
Society Interface 5 705-722.


3. Lushnikov, P.P., Chen, N., and M.S. Alber [2008], Macroscopic
dynamics of biological cells interacting via chemotaxis and direct
contact, Phys. Rev. E. 78, 061904


4. Wu, Y., Jiang, Y., Kaiser, D., and M. Alber [2009], Periodic
reversal of direction allows Myxobacteria to swarm, Proc. Natl. Acad.
Sci. USA 106 4 1222-1227 (featured in the Nature News, January 20th,
2009, doi:10.1038/news.2009.43).
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Meshfree Methods Seminar
Fred J. Hickernell, IIT-Applied Math
"The Tractability of Gaussian Kernel Function Approximation with
Nonhomogeneous Shape Parameter"
Abstract:
The Gaussian kernel is a popular choice for radial basis function
approximation.  For a fixed dimension, the error decays exponentially
with sample size.  However, the leading coefficient of error is
dimension dependent.  If the shape parameter is nonhomogeneous, and
the importance of the variables decays sufficiently fast with
coordinate index, then the error can be shown to be uniformly bounded
by a polynomial in the inverse of the sample size.


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Joe Millham

Administrative Assistant
Department of Applied Mathematics
Illinois Institute of Technology
Engineering-1 Room 208
10 W. 32rd St.
Chicago IL 60616
312.567.8984 (Phone)
312.567.3135 (Fax)
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