This Week at Physics

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This Week at Physics

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Events During the Week of November 4th through November 10th, 2018

Monday, November 5th, 2018

No events scheduled

Tuesday, November 6th, 2018

Chaos & Complex Systems Seminar
A report on the recent work by Araujo and Liotta on the topological requirements for robust perfect adaptation in networks of any size
Time: 12:05 pm
Place: 4274 Chamberlin (Refreshments will be served)
Speaker: Sigurd Angenent, UW Department of Mathematics
Abstract: From the article, Robustness, and the ability to function and thrive amid changing and unfavorable environments, is a fundamental requirement for living systems. Until now it has been an open question how large and complex biological networks can exhibit robust behaviors, such as perfect adaptation to a variable stimulus, since complexity is generally associated with fragility. Here we report that all networks that exhibit robust perfect adaptation (RPA) to a persistent change in stimulus are decomposable into well-defined modules, of which there exist two distinct classes. These two modular classes represent a topological basis for all RPA-capable networks, and generate the full set of topological realizations of the internal model principle for RPA in complex, self-organizing, evolvable bionetworks. This unexpected result supports the notion that evolutionary processes are empowered by simple and scalable modular design principles that promote robust performance no matter how large or complex the underlying networks become.
Host: Clint Sprott
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Council Meeting
council meetings
Time: 3:30 pm
Place: 2314 Chamberlin Hall
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Wednesday, November 7th, 2018

Department Meeting
Department Meeting
Time: 12:15 pm
Place: 5310 Chamberlin Hall
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Thursday, November 8th, 2018

R. G. Herb Condensed Matter Seminar
Time: 10:00 am
Place: 5310 Chamberlin
Speaker: Mark Dykman, Michigan State University
Abstract: TBD
Host: Coppersmith
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Astronomy Colloquium
"Star Formation Then and Now"
Time: 3:30 pm
Place: 4421 Sterling Hall, Coffee and cookies 3:30 PM. Talk Begins at 3:45 PM
Speaker: Nia Imara, CfA Harvard
Abstract: Stars are of fundamental importance to astronomy, and how they form and shape their environments influence everything from exoplanet studies to cosmology. Stars form in heavily obscured molecular clouds, and understanding the initial conditions of star formation persists as one of the leading challenges of contemporary astrophysics. A major challenge is the wide range of physical scales involved: from the large-scale galactic environment, to molecular clouds, to the high-density filaments and cores most directly associated with the birth of stars, and all the way down to the physics of dust, atoms and molecules. I will discuss ways to overcome these challenges, focusing on the birth of molecular clouds from the atomic interstellar medium, the role of high-density substructure in the formation of stars, and the properties of molecular clouds in dwarf galaxies. I will also explore some cosmological implications of stardust, proposing theoretical models for dust in high-redshift galaxies and in the intergalactic medium.
Host: Professor Eric Wilcots
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Friday, November 9th, 2018

Physics Department Colloquium
Time: 3:30 pm
Place: 2241 Chamberlin Hall
Speaker: Meenakshi Narain, Brown University
Abstract: tbd
Host: Sridhara Dasu
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