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SUMMARY:A&A Distinguished Speaker Seminar with UCSB's Bassam Bamieh
LOCATION:Student Union Building (HUB)
DTSTART;TZID=America/Los_Angeles:20260518T160000
DTEND;TZID=America/Los_Angeles:20260518T170000
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DESCRIPTION:Event interval: Single day event\nCampus location: Student U
 nion Building (HUB)\nOnline Meeting Link: https://washington.zoom.us/j/9
 5344048438\nCampus room: 334\nAccessibility Contact: aafrontdesk@uw.edu
 \nEvent Types: Lectures/Seminars\n\nA&A Distinguished Speaker Seminar wit
 h UCSB's Bassam Bamieh\nFragility in Large-scale Dynamics: From Shear-fl
 ow transition to Anderson Localization to Networked Dynamical Systems\n
 \nReception following!\n\nAbstract\nSome mathematical models of physical 
 phenomena can exhibit radically different behavior when modified slightl
 y to account for additional physical mechanisms. This can be understood 
 as fragility of the mathematical model to small "perturbations" in the d
 ynamical description. These phenomena appear to be more ubiquitous than 
 is generally believed. Hydrodynamic stability of wall-bounded shear flow
 s is one striking example where flow fluctuations are highly susceptible
  to even small irregularities. The well-known phenomenon of Anderson loc
 alization is another one where small amounts of material disorder can ra
 dically alter the nature of dynamical modes. Recent work has shown that 
 such localization phenomena can also occur without the presence of mediu
 m disorder\, but rather due to complex geometry such as in vibrational m
 odes of several naturally occurring biomolecules. The common thread betw
 een these seemingly disparate phenomena is the fragility of eigenvalues/
 vectors of large-scale matrices and operators when perturbed in various 
 ways. These observations inspire the search for similar fragilities in l
 arge-scale dynamical networks such as the power grid among others. This 
 talk will weave this common thread between these seemingly disparate fie
 lds\, and connect them to the area of robust control\, which is concerne
 d with the behavior of systems in the presence of uncertain dynamics. \n
 \nBio \nBassam Bamieh is Professor of Mechanical Engineering at the Univ
 ersity of California at Santa Barbara. His research interests are in the
  fundamentals of Control and Dynamical Systems such Robust\, Optimal and
  Distributed Control\, as well as the connections with problems in the a
 reas of turbulence\, thermoacoustics\, statistical physics\, and network
  science. He is a past recipient of the AACC Hugo Schuck Best Paper Awar
 d\,  and the IEEE Control Systems Society G. S. Axelby Outstanding Paper
  Award (twice). He is a Fellow of the International Federation of Automa
 tic Control (IFAC)\, and a Fellow of the IEEE.
CATEGORIES:A&A Distinguished Seminar Series
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