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DTSTAMP:20260610T165339
CREATED:20240301T170802Z
LAST-MODIFIED:20240312T171812Z
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SUMMARY:Physics Colloquium - Marcus Noack
DESCRIPTION:Dr. Marcus Noack\, Research Scientist\, Lawrence Berkeley National Lab \nNext-Generation Gaussian Processes for   Function Approximation\, Uncertainty Quantification\, and Decision-Making \nGaussian processes (GPs) and Gaussian-related stochastic processes are powerful tools for function approximation\, uncertainty quantification\, global optimization\, and autonomous data acquisition due to their robustness\, analytical tractability\, and natural inclusion of Bayesian uncertainty estimates. Even so\, Gaussian processes are often criticized for poor approximation performance and neck-breaking computational costs in real-life applications.  The reason for this gap\, however\, is not the methodology itself but rather a user-caused lack of flexibility and domain awareness of the underlying prior probability distribution.   \nIn this talk\, I address many challenges of GPs that might inhibit optimal performance.  We will discover hands-on solutions and tools that make implementation easy.  The key takeaway for the audience will be a better understanding of Gaussian processes and ways to customize them for optimal performance. \nThe event flyer is available here.
URL:https://uwm.edu/physics/event/physics-colloquium-marcus-noack/
LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
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DTSTART;TZID=America/Chicago:20240419T153000
DTEND;TZID=America/Chicago:20240419T170000
DTSTAMP:20260610T165339
CREATED:20240301T170912Z
LAST-MODIFIED:20240412T134014Z
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SUMMARY:Physics Colloquium - Joel Nowitzke
DESCRIPTION:Joel Nowitzke\, PhD Candidate\, UW-Milwaukee \nModeling and Measurements of Network Formation and Viscoelastic Behavior of Folded Protein-Based Hydrogels \nProteins are vital for various daily functions and are even used in creating biocompatible materials through chemical crosslinking. However\, predicting the mechanical properties of these materials is challenging due to the random orientation of constituent molecules within the network. Bridging the gap between nanoscopic and macroscopic scales is essential for formulating predictable biomaterials. Through a combination of experimental methods and computational simulations\, including Single Molecule Magnetic Tweezers and Steered Molecular Dynamics Simulations\, we aim to understand these properties. This approach involves determining the relative stability of pulling geometries and simulating protein unfolding to create accurate models. By subjecting simulated networks to external stress\, we assess their behavior compared to experimental data\, ensuring realistic predictions. \nThe event flyer is available for download here.
URL:https://uwm.edu/physics/event/physics-colloquium-joel-nowitzke/
LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
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DTSTART;TZID=America/Chicago:20240426T153000
DTEND;TZID=America/Chicago:20240426T170000
DTSTAMP:20260610T165339
CREATED:20240301T171028Z
LAST-MODIFIED:20240426T125548Z
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SUMMARY:Physics Colloquium - Rob Pisarski
DESCRIPTION:Rob Pisarski\, Distinguished Scientist\, Department of Physics\, Brookhaven National Laboratory \nThe Ugly Duckling and the Swan: The Quark-Gluon Plasma and Heavy Ion Collision \nI give a pedagogical and historical overview of the search for the Quark-Gluon plasma (QGP) in the collisions of heavy ions.  I begin with a brief review of why we expect a QGP to be formed at high temperature.  In this\, numerical simulations in lattice Quantum ChromoDynamics (QCD) form the bedrock of the field.  In particular\, they demonstrate the relationship between deconfinement and the restoration of chiral symmetry. \nAt the SPS at CERN\, I discuss the suppression of J/Psi mesons\, and the excess of dileptons below the rho meson.  Bjorken first noticed that a “plateau” may emerge at high energies\, and produce a regime at high temperature\, and low chemical potential.  At colliders such as RHIC\, at Brookhaven\, and the LHC\, at CERN\, I discuss two notable signals:  the utility of nearly ideal hydrodynamics\, and jet quenching.  The new frontier is going down to moderate collision energies\, which there is net excess of baryons.  Possible phenomena in this region include a critical end point and moat regimes. \nThe event flyer is available here.
URL:https://uwm.edu/physics/event/physics-colloquium-rob-pisarski/
LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
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