
Sean Lawley
Mon Mar 13, 2017
4:00 pm
A number of diverse biological systems involve diffusion in a randomly switching environment. For example, such processes arise in brain biochemistry, insect respiration, intracellular trafficking, and biochemical reaction kinetics. These processes present interesting mathematical subtleties as they combine two levels of randomness: Brownian...

Bernard Deconinck
Mon Feb 13, 2017
4:00 pm
Integrable PDEs are a special class of PDEs for which many local and global properties are known. Perhaps the most famous of the solutions of an integrable PDE is its soliton solution, leading to these equations being referred to as soliton equations. The importance of integrable equations derives from the understanding we gain from them...

Jianguo Huang
Mon Jan 30, 2017
4:00 pm
Many problems arising in image processing and signal recovery with multi regularization and constraints can be formulated as minimization of a sum of three convex separable functions. Typically, the objective function involves a smooth function with Lipschitz continuous gradient, a linear composite nonsmooth function and a nonsmooth function. In...

Mon Jan 23, 2017
4:00 pm

Christian Mazza
Mon Jan 16, 2017
4:00 pm
The plant hormone auxin plays a central role in growth and morphogenesis. In the shoot apical meristem, the auxin flux is polarized through its interplay with PIN proteins. Concentration based mathematical models of the auxin flux permit to explain some aspects of phyllotaxis , where auxin accumulation points act as auxin sinks...

Xiaozhe Hu
Mon Dec 5, 2016
4:00 pm
In this talk, motivated by the application in computing distance metric for protein interaction networks, we will discuss the algorithmic development of fast solvers for graph Laplacian systems. Two different solvers will be introduced. One solver is based on the algebraic multigrid method and the other one is based on a special...

Xiaoping Xie
Mon Nov 28, 2016
4:00 pm
We propose a weak Galerkin (WG) finite element method for 2 and 3dimensional convectiondiffusionreaction problems on conforming or nonconforming polygon/polyhedral meshes. The WG method uses piecewisepolynomial approximations of degree $k(k\ge 0)$ for both the scalar function and its trace on the interelement boundaries. We show that the...