Seminars and Colloquiums
for the week of March 12, 2012
Speaker:
Mr. Jesse Smith, Monday
Mr. Fei Xing, Monday
Prof. Remus Nicoara, Wednesday
Dr. Ching-Shan Chou, Ohio State University, Friday
If you are interested in giving or arranging a talk for one of our seminars or colloquiums,
please review our calendar.
If you have questions, or a date you would like to confirm, please contact Dr. Judy Day.
Monday, March 12
ALGEBRA SEMINAR
TIME: 2:30 - 3:20 p.m.
ROOM: Ayres B004
SPEAKER: Mr. Jesse Smith
TITLE: Zero-dimensional Rings II
ABSTRACT: We will discuss several properties of zero-dimensional commutative rings. In particular, we will discuss commutative von Neumann regular rings and when the product of zero-dimensional rings is zero-dimensional.
PROBABILITY SEMINAR
TIME: 3:35 - 4:25 p.m.
ROOM: Ayres 122
SPEAKER: Mr. Fei Xing
TITLE: Almost sure asymptotics for Ornstein-Uhlenbeck processes of Poisson potenial
ABSTRACT: In this talk, I consider the long time behavior of an Ornstein-Uhlenbeck process moving in a homogeneous Poisson media. It turns out that the positive/negative exponential moment has $e^{ct}$
growth/decay rate, which is different from the results for Brownian motion model studied by Carmona and Molchanov for positive exponential moment and Sznitman for negative exponential moment.
Wednesday, March 14
ANALYSIS SEMINAR
TIME: 3:35-4:25 p.m.
ROOM: Ayres 112
SPEAKER: Prof. Remus Nicoara, UTK
TITLE: Cartan Subalgebras of von Neumann Algebras (continued)
ABSTRACT: A Cartan subalgebra A of M is a maximal abelian subalgebra which together with its normalizer generates M. Existence and uniqueness results for Cartan subalgebras turn out to be major tools in the classification of von Neumann algebras. We will present a survey of some of the known results so far - due to Connes, Jones, Popa, Vaes, Ioana.
Friday, March 16
COLLOQUIUM
TIME: 3:35 – 4:25 pm
ROOM: Ayres 405
SPEAKER: Dr. Ching-Shan Chou, Ohio State University
TITLE: Systems Biology of Cell Polarization
ABSTRACT: Cell polarization, in which substances within the cell become non-uniformly distributed, underlies many fundamental biological processes: cell division, cell motility and cell fate specification. The establishment and maintenance of cell polarity is critical to normal cell function, and it relies on a highly coordinated network including processes of signal transduction, membrane trafficking and cytoskeletal dynamics. Due to the variability and uncertainty of the stimuli, cell polarization also has challenging performance objectives including the ability to detect and respond to changes in stimuli and the ability to filter out noise present in the networks to retain stability and robustness.
In this talk, I will present our study on a model system for cell polarization: budding yeast cells. We use mathematical modeling, along with experiments, to investigate the robustness of cell polarization in yeast cells from a systems point of view. The mechanisms for cell polarization, the adaptivity and noise filtering strategies will be discussed. In addition, I will present our results on the morphological changes induced by cell polarity, and possible polarization mechanisms through organizing microdomains on the cell membrane.
Refreshments will be available in Ayres 401 at 3:15 p.m.
Past notices:
winter break
Seminars from 2010-2011 academic year
Seminars from 2009-2010 academic year
Seminars from 2008-2009 academic year
Seminars from 2007-2008 academic year
Seminars from 2006-2007 academic year