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Events
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Nov18
EVENT DETAILSmore info
lessAlexander Stolyar (UIUC)
Abstract: We consider a class of multi-agent distributed synchronization systems, which are modeled as n particles moving on the real line. This class generalizes the model of a multi-server queueing system, employing so-called cancel-on-completion (c.o.c.) redundancy mechanism, but is motivated by other applications as well. The queueing model can be viewed as a particle system, regulated at the left boundary point. The more general model is such that we allow regulation boundaries on either side, or both sides, or no regulation at all. We consider the mean-field asymptotic regime, where the number of particles n and the job arrival rates go to infinity, while the job arrival rates per particle remain constant. The system state for a given n is the empirical distribution of the particles' locations. The results include: the existence/uniqueness of fixed points of mean-field limits (ML), which describe the limiting dynamics of the system; conditions for the steady-state asymptotic independence (concentration of the stationary distribution on an ML fixed point); the limits of the average velocity at which unregulated (free) particle system advances. Our technical approach is such that the systems with different types of regulation are analyzed within a unified framework.
Bio. Since 2017 Alexander Stolyar is a Professor in the ISE Department and Coordinated Science Lab at UIUC. His research interests are in stochastic processes, queueing theory, and stochastic modeling of information, communication, service and supply chain systems. He received Ph.D. in Mathematics from the Institute of Control Science, Moscow, in 1989, and was a research scientist at the Institute of Control Science in 1989-1991. In 1992-1998 he was working on stochastic models in telecommunications at Motorola and AT&T Research. From 1998 to 2014 he was with the Bell Labs Mathematical Sciences Research, Murray Hill, New Jersey, working on stochastic networks and resource allocation problems in a variety of applications, including wireless and wireline communications, service systems, network clouds. In 2014-2016 he was a Professor in the ISE Department at Lehigh University. He is an INFORMS Fellow, and received INFORMS Applied Probability Society 2004 Best Publication award and SIGMETRICS'96 Best Paper award.
TIME Tuesday, November 18, 2025 at 11:00 AM - 12:00 PM
LOCATION L440, Technological Institute map it
CONTACT Kendall Minta kendall.minta@gmail.com EMAIL
CALENDAR Department of Industrial Engineering and Management Sciences (IEMS)
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Dec2
TIME Tuesday, December 2, 2025 at 11:00 AM - 12:00 PM
LOCATION L440, Technological Institute map it
CONTACT Kendall Minta kendall.minta@gmail.com EMAIL
CALENDAR Department of Industrial Engineering and Management Sciences (IEMS)
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Dec13
EVENT DETAILS
lessThe ceremony will take place on Saturday, December 13 in Pick-Staiger Concert Hall, 50 Arts Circle Drive.
TIME Saturday, December 13, 2025 at 4:00 PM - 6:00 PM
LOCATION Pick-Staiger Concert Hall map it
CONTACT Andi Joppie andi.joppie@northwestern.edu EMAIL
CALENDAR McCormick School of Engineering and Applied Science