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MEAM Seminar: “Fluid Mechanics and Turbulence in Extended Wind Farms”

Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

In this presentation we discuss several properties of the flow structure and turbulence in the wind turbine array boundary layer (WTABL). This particular type of shear flow develops when the atmospheric boundary layer interacts with an array of large wind turbines. Based on such understanding, we aim to develop reduced order, analytically tractable models. These […]

PRiML Seminar: “Optimizing probability distributions for learning: sampling meets optimization”

Room 401B, 3401 Walnut 3401 Walnut Street, Philadelphia, PA, United States

Optimization and sampling are both of central importance in large-scale machine learning problems, but they are typically viewed as very different problems. This talk presents recent results that exploit the interplay between them. Viewing Markov chain Monte Carlo sampling algorithms as performing an optimization over the space of probability distributions, we demonstrate analogs of Nesterov's acceleration approach in the sampling domain, […]

BE Seminar: “Microfluidics and Immuno-Materials for Organs-on-a-Chip”

Room 337, Towne Building 220 South 33rd Street, Philadelphia, PA, United States

This presentation will describe microfluidic technologies to conveniently produce life-like pulsatile flows along with applications to study of lung injury, enhancement of in vitro fertilization, and analysis of frequency-dependent cellular responses. The microfluidic technologies range from adaptation of piezo-electric actuator arrays from Braille displays to design of microfluidic circuits that can be designed to switch […]