APPM Colloquium - Peter F. Craigmile

Sept. 28, 2018

Peter F. Craigmile, Department of Statistics, The Ohio State University Enhancing statistical inference for stochastic processes using modern statistical methods (This is joint research with Radu Herbei, Matthew Pratola, Huong Nguyen, and Grant Schneider, at The Ohio State University.) Stochastic processes such as stochastic differential equations (SDEs) and Gaussian processes...

Complex/Dynamical Systems Seminar - Tahra Lucene Eissa

Sept. 27, 2018

Spatiotemporal Dynamics of Neocortical Seizure Activity Seizures are defined as sudden, abnormal electrical disturbances in the brain. Patients diagnosed with epilepsy have chronic, recurrent seizures and often require clinical intervention to prevent these episodes. Unfortunately, a large portion of epilepsy patients do not respond to current treatment options, in part...

Geophysical/Astrophysical Fluid Dynamics Seminar - Anna Frishman

Sept. 25, 2018

Condensate, fluctuations and symmetries — a tale of 2D turbulence Earth's jet streams, Jupiters Great Red Spot and its zonal winds are all examples of persistent large scale flows, whose dynamics is to a good approximation two-dimensional. These flows are also highly turbulent, and the interaction between the turbulence and...

Mathematical Biology Seminar - Sara Calandrini

Sept. 25, 2018

An ALE method for large structural displacements in fluid-structure interaction simulations of venous valves Veins are blood vessels subjected to very low blood pressures, and they rely on muscle contractions and one-way valves to push blood back to the heart. The main contribution of venous valves is to prevent back...

Stats, Optimization, and Machine Learning Seminar - Emilliano Dall'anese

Sept. 25, 2018

Online Optimization with Feedback The talk focuses on the design and analysis of running (i.e., online) algorithmic solutions to control systems or networked systems based on performance objectives and engineering constraints that may evolve over time. The time-varying convex optimization formalism is leveraged to model optimal operational trajectories of the...

Nonlinear Waves Seminar - Ezio Iacocca

Sept. 25, 2018

Rapid soliton nucleation and dynamics in magnetic materials Magnetism in solid materials is a fascinating yet complex phenomenon that encompasses vastly different length and time scales. This complexity is typically resolved by establishing equations that are valid at different scales. For example, magnetic dynamics at the atomic level can be...

APPM Colloquium - Yingda Cheng

Sept. 21, 2018

Sparse Grid Discontinuous Galerkin Methods for High-Dimensional Transport Equations In this talk, we present sparse grid discontinuous Galerkin (DG) schemes for solving high-dimensional PDEs. We will discuss the construction of the scheme based on sparse finite element spaces built from multiwavelets, its properties and applications in kinetic transport equations, such...

Stochastics Seminar - Matteo Basei

Sept. 20, 2018

Nonzero-sum stochastic differential games with impulse controls We consider a general class of nonzero-sum impulsive games with N players. By means of a suitable system of quasi-variational inequalities, we provide a verification theorem for the equilibrium strategies and the value functions of the game. In particular, we focus on the...

Complex/Dynamical Systems Seminar - Orit Peleg

Sept. 20, 2018

Collective Ecophysiology and Physics of Social Insects Collective behavior of organisms creates environmental micro-niches that buffer them from environmental fluctuations e.g. temperature, humidity, mechanical perturbations etc., thus coupling organismal physiology, environmental physics and population ecology. This talk will focus on a combination of biological experiments, theory and computation to understand...

APPM Colloquium - Paul Sava

Sept. 18, 2018

3D radar wavefield imaging of comet interiors The Rosetta mission to comet 67P/C-G revolutionized comet science, but left major questions on the table. Are cometary nuclei primordial or are they collisionally-evolved as predicted by modern theories of planet formation? The CONSERT radar experiment sounded the interior of the nucleus showing...

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