BEGIN:VCALENDAR VERSION:2.0 PRODID:-//University of Utah Math Department//Departmental Colloquium//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Departmental Colloquium - Spring 2012 X-WR-CALDESC:Departmental Colloquium at University of Utah Mathematics Department X-WR-TIMEZONE:America/Denver BEGIN:VEVENT UID:20120112T160000-hailin-sang@math.utah.edu DTSTART;TZID=America/Denver:20120112T160000 DTEND;TZID=America/Denver:20120112T170000 DTSTAMP:20260821T120902Z SUMMARY:Autoregressive model selection with simultaneous sparse coefficient estimation DESCRIPTION:Speaker: Hailin Sang\, Indiana University, Bloomington\n\nIn this talk we study a sparse coefficient estimation procedure for autoregressive (AR) models based on penalized conditional maximum likelihood. The penalized conditional maximum likelihood estimator (PCMLE) thus developed has the advantage of performing simultaneous coefficient estimation and … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120119T160000-jon-chaika@math.utah.edu DTSTART;TZID=America/Denver:20120119T160000 DTEND;TZID=America/Denver:20120119T170000 DTSTAMP:20260821T120902Z SUMMARY:Interval exchange transformations DESCRIPTION:Speaker: Jon Chaika\, Universtiy of Chicago\n\nInterval exchange transformations are invertible, piecewise order preserving isometries of the unit interval with finitely many discontinuities. Starting from rotations of the circle, which they generalize, this talk will present their connections to flows on flat surfaces, rational billiards and … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120126T160000-hongxiao-zhu@math.utah.edu DTSTART;TZID=America/Denver:20120126T160000 DTEND;TZID=America/Denver:20120126T170000 DTSTAMP:20260821T120902Z SUMMARY:Bayesian graphical models for multivariate functional data DESCRIPTION:Speaker: Hongxiao Zhu\, Duke University\n\nIn a broad variety of application areas there is interest in inferring the dependence structure in multivariate functional data. For data in vector form, conditional independence relationships between variables can be inferred through allowing zeros in the precision matrix through a Gaussian … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120131T160000-marisa-eisenberg@math.utah.edu DTSTART;TZID=America/Denver:20120131T160000 DTEND;TZID=America/Denver:20120131T170000 DTSTAMP:20260821T120902Z SUMMARY:Structural Identifiability Methods for Modeling Human Disease DESCRIPTION:Speaker: Marisa Eisenberg\, Ohio State University\n\nConnecting models with data to yield predictive results requires a variety of parameter estimation, identifiability, and uncertainty quantification techniques. Identifiability analysis addresses the question of whether it is possible to uniquely recover the model parameters from a given set of data. … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120202T160000-john-morgan@math.utah.edu DTSTART;TZID=America/Denver:20120202T160000 DTEND;TZID=America/Denver:20120202T170000 DTSTAMP:20260821T120902Z SUMMARY:Geometrization of 3-manifolds DESCRIPTION:Speaker: John Morgan\, Stony Brook University\n\nThe Geometrization Conjecture for 3-manifolds was formulated by Thurston in the early 1980s. `Geometric' manifolds are defined to be smooth manifolds that admit complete, finite-volume locally homogeneous Riemannian metrics. Such manifolds are local homogeneous spaces and thus can be enumerated in … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120203T160000-dongbin-xiu@math.utah.edu DTSTART;TZID=America/Denver:20120203T160000 DTEND;TZID=America/Denver:20120203T170000 DTSTAMP:20260821T120902Z SUMMARY:A Flexible Stochastic Collocation Algorithm on Arbitrary Nodes via Interpolation DESCRIPTION:Speaker: Dongbin Xiu\, Purdue University\n\nStochastic collocation method have become the dominating methods for uncertainty quantication and stochastic computing of large and complex systems. Though the idea has been explored in the past, its popularity is largely due to the recent advance of employing high-order nodes such as sparse grids. … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120207T160000-justin-kao@math.utah.edu DTSTART;TZID=America/Denver:20120207T160000 DTEND;TZID=America/Denver:20120207T170000 DTSTAMP:20260821T120902Z SUMMARY:Modeling the dynamics of fluid boundaries DESCRIPTION:Speaker: Justin Kao\, Massachusetts Institute of Technology\n\nFluid flows with free boundaries present the challenges of highly nonlinear dynamics, multiple scales, and complex physics due to interfaces between two substances. I examine some approaches to describing and understanding the behavior of these fluid boundaries, and discuss work on the rupture of … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120209T160000-eric-opdam@math.utah.edu DTSTART;TZID=America/Denver:20120209T160000 DTEND;TZID=America/Denver:20120209T170000 DTSTAMP:20260821T120902Z SUMMARY:Harmonic analysis on p-adic reductive groups and homological algebra DESCRIPTION:Speaker: Eric Opdam\, University of Amsterdam, Netherlands\n\nThe Fourier decomposition of an L^2-function on a p-adic semi simple group G contains contributions from spectral series of various dimensions. These spectral series consist of irreducible representations of G which have "moderate growth behavior at infinity'', the so-called tempered irreducible … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120216T160000-jianfeng-lu@math.utah.edu DTSTART;TZID=America/Denver:20120216T160000 DTEND;TZID=America/Denver:20120216T170000 DTSTAMP:20260821T120902Z SUMMARY:Multiscale analysis of solid materials: From electronic structure models to continuum theories DESCRIPTION:Speaker: Jianfeng Lu\, New York University\n\nModern material sciences focus on studies on the microscopic scale. This calls for mathematical understanding of electronic structure and atomistic models, and also their connections to continuum theories. In this talk, we will discuss some recent works where we develop and generalize ideas and … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120223T160000-kay-magaard@math.utah.edu DTSTART;TZID=America/Denver:20120223T160000 DTEND;TZID=America/Denver:20120223T170000 DTSTAMP:20260821T120902Z SUMMARY:Generating Systems for Finite Groups with a View towards Geometry DESCRIPTION:Speaker: Kay Magaard\, University of Birmingham, England\n\nWhen, back in 1832, Galois proved that it is impossible to solve the general quintic by radicals he invented group theory and modern algebra. Crucial to Galois proof was the knowledge that a certain pair of permutations of degree 5 forms a generating set for S_5, the symmetric group of degree 5. For … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120301T160000-jeremy-quastel@math.utah.edu DTSTART;TZID=America/Denver:20120301T160000 DTEND;TZID=America/Denver:20120301T170000 DTSTAMP:20260821T120902Z SUMMARY:The Kardar-Parisi-Zhang equation and its universality class DESCRIPTION:Speaker: Jeremy Quastel\, University of Toronto, Canada\n\nThe KPZ equation was introduced in 1986, and has become the default model in physics for random interface growth. It is a member of a large universality class with non-standard fluctuations, including directed random polymers. Even in one dimension, it turned out to be difficult to interpret and … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120308T160000-chris-jones@math.utah.edu DTSTART;TZID=America/Denver:20120308T160000 DTEND;TZID=America/Denver:20120308T170000 DTSTAMP:20260821T120902Z SUMMARY:What are Theory and Experiment in Climate Science? And Where’s the Math? DESCRIPTION:Speaker: Chris Jones\, University of North Carolina\n\nMathematicians have not been as involved in climate research as they are in many other areas of physics or biology, even compared with other areas of the geosciences. I will discuss how we may view climate research in way that makes the potential for our contributions clearer. I will also discuss … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120320T160000-andrea-bertozzi@math.utah.edu DTSTART;TZID=America/Denver:20120320T160000 DTEND;TZID=America/Denver:20120320T170000 DTSTAMP:20260821T120902Z SUMMARY:Particle Laden Flow - applications from the Gulf Oil Spill to Spiral Concentrators DESCRIPTION:Speaker: Andrea Bertozzi\, University of California Los Angeles\n\nThis talk is about the challenges in modeling particle laden flow in viscous liquids and some of their applications. Particle settling in liquid is a complex process in which long range interactions are important due to the incompressibility of the fluid. Hinderance in particle settling is … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120322T160000-heinz-otto-peitgen@math.utah.edu DTSTART;TZID=America/Denver:20120322T160000 DTEND;TZID=America/Denver:20120322T170000 DTSTAMP:20260821T120902Z SUMMARY:Biophysical Modeling and Numerical Simulation of Radio-Frequency-Ablation of Liver Tumors DESCRIPTION:Speaker: Heinz-Otto Peitgen\, Fraunhofer MEVIS, University of Bremen, Germany\n\nRadio-Frequency-Ablation together with Microwave-Ablation and High-Intensity-Focused-Ultrasound-Ablation have become significant alternatives to open surgery on cancer lesions. This is in particular true for Radio-Frequency-Ablation on liver lesions, where we see a rapid world wide increase in these … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT BEGIN:VEVENT UID:20120410T160000-howard-masur@math.utah.edu DTSTART;TZID=America/Denver:20120410T160000 DTEND;TZID=America/Denver:20120410T170000 DTSTAMP:20260821T120902Z SUMMARY:Billiards in polygons, and the SL(2,R) action on moduli spaces of translation surfaces DESCRIPTION:Speaker: Howard Masur\, University of Chicago\n\nAn appealing example of a dynamical system is billiards in a polygon. The most studied examples are when the vertex angles are rational multiples of pi. By an unfolding procedure the billiard flow gives rise to a straight line flow on what is called a translation surface. It turns out that the … LOCATION:JWB 335 URL:http://math.utah.edu/research/colloquia/test/2012-spring/ END:VEVENT END:VCALENDAR