Past Seminars- Applied and Computational Mathematics

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  • Paul Tupper
    Thu Oct 29, 2015
    4:00 pm
    We develop a model of phonological contrast in natural language. Specifically, the model describes the maintenance of contrast between different words in a language, and the elimination of such contrast when sounds in the words merge.  An example of such a contrast is that provided by the two vowel sounds "i" and "e",...
  • Jong-Shi Pang
    Mon Oct 26, 2015
    4:00 pm
    Non-cooperative games are closely associated with multi-agent optimization wherein a large number of selfish players compete non-cooperatively to optimize their individual objectives under various constraints. Unlike centralized algorithms that require a certain system mechanism to coordinate the players' actions, distributed algorithms have...
  • Georg Luebeck
    Mon Oct 19, 2015
    4:00 pm
    The development of Barrett's esophagus (BE), which is specialized intestinal metaplasia in the lower esophagus, is considered an important first step in the development of esophageal adenocarcinoma (EAC). In this talk I will introduce a mathematical framework that enables the development of a biologically-based cancer model to describe the...
  • Bin Zheng
    Mon Jun 8, 2015
    4:00 pm
    In this talk, we discuss fast iterative solvers for the large sparse linear systems resulting from the stochastic Galerkin discretization of stochastic partial differential equations. A block triangular preconditioner is introduced and applied to the Krylov subspace methods, including the generalized minimum residual method and the generalized...
  • Jay Newby
    Mon Jun 1, 2015
    4:00 pm
    Metastable transitions are rare events, such as bistable switching, that occur under weak noise conditions, causing dramatic shifts in the expression of a gene. Within a gene circuit, one or more genes randomly switch between regulatory states, each having a different mRNA transcription rate. The circuit is self regulating when the proteins it...
  • David Levermore
    Fri May 15, 2015
    3:00 pm
     The weak efficient market hypothesis can be interpreted as asserting that major market indices should lie near the Markowitz efficient frontier.  This is seen in many years, but not in years before large market downturns.  Most notably, it was not seen in most of 2007 and 2008 leading up the the crash of 2008.  Indeed, all the...
  • Anwei Chai
    Mon May 4, 2015
    4:00 pm
     High frequency trading (HFT) has been a popular and somewhat controversial topic in research, industry, and public media. Due to its secretive nature, there is certain misunderstanding around it. In this talk, I will give an overview of the HFT from the industrial perspective. I will discuss the micro-structure and data sources of...