Upcoming Events

Friday, March 22, 2019

Ian Walsh (University of Notre Dame)

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Location: B01 McCourtney Hall (Please Note Room Change)

Dissertation Defense

"Testing the Effects of Synonymous Codon Usage on Co-Translational Protein Folding using Novel Experimental and Computational Techniques"

Dr. Patricia Clark's graduate student.

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Saturday, March 23, 2019

Student Health Professions Fair

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Location: Embassy Suites, 511 N Columbus Dr, Chicago, IL

The Health Professions Fair during the CAAHP regional meeting will bring over 85 representatives from a variety of health professions programs, organizations, and associations to the Chicago area.

The fair provides the opportunity for students to meet with these professionals and develop or deepen the understanding of requirements for admission into programs as well as gain knowledge into various professions.…

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Monday, March 25, 2019

John A. Lynch Lecture Series: Paul Bressloff, Department of Mathematics, University of Utah

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Location: 105 Jordan Hall of Science

Bressloff

Paul Bressloff, Department of Mathematics, University of Utah, will give a John A. Lynch Lecture titled, "Spontaneous brain dynamics: geometric visual hallucinations, ambiguous perception, and stochastic attractor networks"."

Advances in experimental techniques, including fMRI, optical imaging, multi-electrode recordings, and optogenetics, combined with sophisticated data analytic tools, are shedding light on the intricate functional architecture of specific brain regions. In this talk, Professor Bressloff will present a neural field theory of geometric visual hallucinations, and will describe a neural field theory of binocular rivalry waves. He will also discuss how stochastic neural fields can be used to investigate the stimulus-dependent suppression of neural variability in multiple-attractor networks.…

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Tuesday, March 26, 2019

Astrophysics Seminar: Mr. Zach Hafen, Northwestern University

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Location: 184 Nieuwland Science Hall

From observations to origins: Disentangling gas flows in the circumgalactic medium

Mr. Zach Hafen
Graduate Student
Department of Physics & Astronomy
Northwestern University

As much as half of the gas mass in our galaxy's dark matter halo may reside not in the galaxy itself, but in the surrounding area, the circumgalactic medium (CGM). The vast gas content of the CGM, loosely defined as the volume immediately outside the galaxy but inside the dark matter halo, can be broadly classified as originating either in accretion from the intergalactic medium (IGM) or winds from galaxies. Both of these are crucial to the process of galaxy formation: IGM accretion provides the material necessary for observed star formation rates, while galactic winds are linked closely to the regulation of star formation through feedback. Despite their individual importance, differentiating these gas flows in observations is an outstanding problem in studies of the CGM. I will discuss our efforts to address this problem through the use of hydrodynamic galaxy formation simulations on two fronts: mock observations of CGM quasar absorption lines and "particle-tracking" analyses that reconstruct the full history of CGM gas.

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ACMS Statistics Seminar: Bayan Saparbayeva

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Location: 154 Hurley Hall

Bayan Saparbayeva
University of Notre Dame

3:30 PM
154 Hurley Hall

Catalyst Acceleration for Non-convex Optimization on Manifolds

In the following work, we propose an extension of a class of optimization algorithms to non-convex problems on manifold spaces. To accomplish this, we leverage ideas from recent work on the “Catalyst” algorithm for non-convex optimization on Euclidean spaces H. Lin et al. (2017). This method is initially designed to accelerate existing optimization algorithms for convex objective functions but is also amenable to non-convex functions. We apply the Catalyst acceleration scheme to many existing optimization routines, such as gradient descent, Newtonian methods and algorithms that are designed for distributed parallel inference on manifolds such as Sarpabayeva et al. (2018). One can show that the algorithm generally converges to the stationary point, and in the case of strongly convex functions, it converges to the local minimum. We will provide convergence analysis of the algorithms and present applications for a large class of objective functions in various manifold spaces.…

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Physics Colloquium: Dr. Yuhsin Tsai, Postdoctoral Research Associate, Maryland Center for Fundamental Physics

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Location: 118 Nieuwland Science Hall

Cosmological probes of the invisible universe

Dr. Yuhsin Tsai

Postdoctoral Research Associate
Elementary Particle Theory Group
Maryland Center for Fundamental Physics
University of Maryland

In the next decade, precision cosmological data from Cosmic Microwave Background and Large Scale Structure observations will improve in sensitivity by more than an order of magnitude. In addition, gravitational wave signals may allow us to see through the plasma background to study the universe at the very earliest times, immediately after the Big Bang. I will discuss the prospects for using these cosmological signals to study the invisible universe, including the unknown properties of neutrinos and dark sector particles, and quantum fluctuations in the primordial dark age.

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Wednesday, March 27, 2019

Thursday, March 28, 2019

Lorena Beese (Duke University)

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Location: 123 Nieuwland Science Hall

     Reilly Lecture II

"Miraculous Machines:  Inner Workings of Human DNA Mismatch Repair"

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Friday, March 29, 2019

Hesburgh Libraries Hackathon 2019

Location: 231 Hesburgh Library, Collaboration Hub

Join us for the 2019 Hesburgh Libraries Hackathon. This year's theme is Synergy: Holistic Solutions for the Whole Student.

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