Applied Mathematics Colloquium - Enkeleida Lushi

Jan. 28, 2022

Enkeleida Lushi, Department of Mathematics, New Jersey Institute of Technology (NJIT) Models and simulations of micro-swimmer motion in complex confinement Many micro-swimmers (e.g.bacteria, algae, spermatozoa, active colloids) live and move in liquids contained in spaces with non-trivial geometry and boundaries. Examples include porous media, liquids containing impurities and obstacles, as...

Applied Mathematics Colloquium - Carlos Perez Arancibia

Jan. 21, 2022

Carlos Perez Arancibia, Department of Applied Mathematics, University of Twente, The Netherlands Density Interpolation Methods for Boundary Integral Equations Boundary integral equation (BIE) methods are powerful techniques to solve linear partial differential equations (PDEs) having a known fundamental solution. They can easily handle unbounded domains and radiation conditions at infinity,...

Applied Mathematics Colloquium - Leonid Berlyand

Dec. 3, 2021

Leonid Berlyand, Department of Mathematics, Penn State University Asymptotic Stability in a free boundary model of cell motion We introduce a free boundary model of the onset of motion of a living cell (e.g. a keratocyte) driven by myosin contraction, with focus on a transition from unstable radial stationary states...

Applied Mathematics Colloquium - Larry Abbott

Nov. 19, 2021

Larry Abbott, Mortimer B. Zuckerman Mind Brain Behavior Institute, Columbia University How flies do vector computations Many tasks, especially those associated with movement and navigation, require the manipulation of vectors. I will describe collaborative work with Gaby Maimon and Cheng Lyu explaining how the Drosophila brain performs vector computations. Specifically,...

Applied Mathematics Colloquium - Greg Chini

Nov. 12, 2021

Greg Chini, Department of Mechanical Engineering, University of New Hampshire Mixing Hot and Cold with Sound The study of acoustic streaming, in which the nonlinear interaction of time-periodic sound waves of small amplitude ∈ drives O (∈ ^2 ) time-mean flows, dates back to the work of Lord Rayleigh. Owing...

Applied Mathematics Colloquium - Orit Peleg

Nov. 5, 2021

Orit Peleg, Department of Computer Science, University of Colorado Boulder Physical Computation in Insect Swarms Our world is full of living creatures that must share information to survive and reproduce. As humans, we easily forget how hard it is to communicate within natural environments. So how do organisms solve this...

Applied Mathematics Colloquium - Nalini Joshi

Oct. 29, 2021

Nalini Joshi, Department of Applied Mathematics, The University of Sydney, New South Wales, Australia Motion and monodromy Newton was inspired by Kepler’s laws of planetary motion to study motion on curves. This led him immediately to transcendental functions, that is, functions that cannot arise as solutions of polynomial equations. A...

Applied Mathematics Colloquium - Lisa Fauci

Oct. 22, 2021

Lisa Fauci, Department of Mathematics, Tulane University Buckling, mixing, swimming, dissolving: adventures with helices at the microscale. The motion of passive or actuated elastic filaments in a fluid environment is a common element in many biological and engineered systems. Examples at the microscale include bacterial flagella propelling a cell body...

Applied Mathematics Colloquium - Eduardo Corona

Oct. 8, 2021

Eduardo Corona, Department of Applied Mathematics, University of Colorado Boulder A crash course in boundary integral methods with applications to Stokesian suspensions Boundary integral methods consist on re-formulating PDE boundary value problems in terms of integral operators. If this integral formulation is chosen carefully, this can reduce the dimensionality of...

Applied Mathematics Colloquium: Margaret Cheney

Oct. 1, 2021

Margaret Cheney, Department of Mathematics at Colorado State University, will talk, "Passive Source Localization" This talk introduces the problem of localizing electromagnetic sources from measurements of their radiated fields at two moving sensors. Two approaches are discussed, the first based on measuring quantities known as “time difference of arrivals“ and...

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