Seminars

Event Description: Leslie Greengard, Courant Institute of Mathematical Sciences, Ney York University 100 years of electromagnetic waves: physics, simulation, and design We will review the analytic and computational foundations of Green’s function based methods for electromagnetic scattering, including high order integral representations, fast solvers, and quasi-periodicity. We will then discuss...

Event Description: Ken Miller, Department of Mathematics, Wichita State University Steady axisymmetric vortex flows Steady axisymmetric vortex flows both with and without swirl will be discussed. Existence theorems for the non-linear partial differential equations that model such flows, as well as an iterative numerical method for computing then, will be...

Event Description: Jean Hertzberg, Department of Mechanical Engineering, University of Colorado Boulder Beautiful physics from ordinary fluids Household fluids are capable of illustrating sublime physics, using very simple setups. Students in engineering and fine arts, enrolled in a course on flow visualization at the University of Colorado, have employed common...

Event Description: Scot Elkington, LASP, University of Colorado Boulder Physical Models of the Earth’s space radiation environment The outer zone of the Van Allen radiation belts consists of highly energetic (MeV) electrons trapped in electromagnetic drifts encircling the Earth. The radiation belts are largely field-aligned structures ordered by Earth’s intrinsic...

Event Description: David Kassoy, Department of Mechanical Engineering, University of Colorado Boulder Confessions of a Master Perturbator: a Matter of Scales Imagine a physical system in which phenomena occur on diverse length and time scales simultaneously in adjacent regions of space. You, the mathematical modeler, would like to provide a...

Event Description: Larry Hunter, Center for Computational Parmacology, University of Colorado Health Sciences Center Staying at the forefront of biomedical knowledge: text mining and semantic data integration The advent of “high-throughput” molecular instrumentation has revolutionized molecular biology, causing an overwhelming flood of valuable new information that threatens to outstrip the...

Event Description: Tom Bogdan, Space Environment Center, NOAA A tale of three waves: coupled wave equations used in the ‘sounding’ of magnetized atmospheres Propagating and standing waves are especially useful for the remote sensing of distant and difficult-to-access media. A familiar example is the seismology of the Earth’s interior, often...

Event Description: Mike Breed, Department of Ecology and Evolutionary Biology, University of Colorado Boulder Nestmate recognition and perceptual dimensions in honey bees Honey bees discriminate nestmates from non-nestmates using pheromonal signals. Bees must be able to generate enough unique signals to differentiate colonies within a population. In this talk I...

Event Description: John Boyd, Department of Atmospheric, Oceanic and Space Science, University of Michigan Exponentially accurate Rung-free approximation from samples on an evenly-spaced grid for non-periodic functions Approximating a function from its values at a f(xi) set of evenly spaced points xi through ( N +1)-point polynomial interpolation often fails...

Event Description: Richard Rotunno, Earth and Sun Systems Laboratory, NCAR A generalization of Lorentz’s model for the predictability of flows with many scales of motion The idea that there is an inherent finite range of predictability for certain fluid flows originates with Lorenz (Tellus, 1969). This idea is based on...