Complex/Dynamical Systems Seminar - Lev Ostrovsky

Nov. 15, 2018

Dynamics of particles in stationary and oscillating flows The motion of small bodies in a hydrodynamic flow is a classical problem of fluid dynamics. Since 1980s-1990s the corresponding studies have been largely intensified due to the new applications, such as tracing impurities in the ocean and new biomedical applications of...

APPM Colloquium - Nathan Albin

Nov. 9, 2018

Fairest edge usage in spanning trees This talk will explore several interesting and interrelated optimization problems involving the spanning trees of a graph. Each problem will be connected to a single fundamental question: How should we choose a probability distribution on the spanning trees of a graph that treats the...

Complex/Dynamical Systems Seminar - Bailey Fosdick

Nov. 8, 2018

Inferring latent networks from longitudinal relational data Longitudinal bipartite relational data characterize the evolution of relations between pairs of actors, where actors are of two distinct types and relations exist only between disparate types. A common goal is to understand the temporal dependencies, specifically which actor relations incite later actor...

Stochastics Seminar - Joshua Aurand

Nov. 8, 2018

Epstein-Zin Utility Maximization over Random Horizon This talk focuses on solving the consumption-investment problem for an agent with stochastic differential utility of Epstein-Zin type. In contrast to prior literature, our time horizon is random, taken from the class of stopping times in the augmented Brownian filtration. Parameter specification is empirically...

Mathematical Biology Seminar - Harry Dudley

Nov. 6, 2018

Differential-Algebraic Equation Models of Microbial Electrolysis Cells Microbial electrolysis cells (MECs) are an emerging technology that employs microorganisms to recover energy from organic waste in the form of hydrogen. MECs consist of two types of microbes. In these devices, bacteria on the electroactive anode biofilm oxidize (in)organic substrate and transfer...

Stats, Optimization, and Machine Learning Seminar - Nicholas Landry

Nov. 6, 2018

Music Data Mining: Finding structure in song An introduction to basic music data mining techniques

Nonlinear Waves Seminar - Patrick Sprenger

Nov. 6, 2018

Computing traveling wave solutions of the fifth order Korteweg-de Vries equation through Whitham theory Whitham modulation theory is a useful tool for describing the adiabatic evolution of periodic solutions to nonlinear dispersive equations. Modulation theory yields a first order system of quasilinear partial differential equations which describe the evolution of...

APPM Colloquium - Shelby Wilson

Nov. 2, 2018

On the dynamics of coupled Morris-Lecar Neurons In recent years, the study of computational neuronal dynamics has made remarkable progress has been made by on the nonlinear study of artificial neural networks. This approach relies on using models of single neurons as building blocks of a much larger network ensemble...

Complex/Dynamical Systems Seminar - Natasha Bosanac

Nov. 1, 2018

Applications of Dynamical Systems Theory to Astrodynamics and Celestial Mechanics The underlying dynamical structures that exist within multi-body systems can be leveraged to enable the design of trajectories for missions to interplanetary destinations and to further our understanding of natural celestial transport – both within our solar system and beyond...

APPM Colloquium - Cristiano Nisoli

Oct. 26, 2018

Designing frustration and topologically constrained disorder in artificial spin ice We are all familiar with classical states of matter as ordered or disordered; and yet some of the most relevant phenomena in nature, from the nano-machinery of life in DNA, to the behavior of animal or human colonies, to the...