BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20250725T064849EDT-8748WC4ugR@132.216.98.100 DTSTAMP:20250725T104849Z DESCRIPTION:Virtual Informal Systems Seminar (VISS)\n Centre for Intelligent Machines (CIM) and Groupe d'Etudes et de Recherche en Analyse des Decisio ns (GERAD)\n\n**This is a joint event with GERAD seminar organized by Anto ine Lesage-Landry\n\n\n \n \n Speaker: Josh Taylor\, Associate Professor\, El ectrical and Computer Engineering\, University of Toronto\, Canada\n \n Abst ract: \n In this talk\, we begin by optimizing the gradostat\, in which sev eral bioreactors are interconnected by mass flow and diffusion. The grados tat is of interest both as a classical nonlinear system and because the ba sic network structure and nonlinearities appear in a wide variety of biopr ocesses\, including wastewater treatment. We formulate a convex relaxation for optimizing the gradostat. The relaxation is exact under several condi tions\, for example\, if the gradostat is outflow connected and its flow m atrix is irreducible. When the microbial growth in the bioreactors is desc ribed by the Monod or Contois functions\, the relaxation is a second-order cone program\, which can be solved at scales of over 10^5 variables in mi nutes with industrial software. We present a numerical example based on th e operation of a wastewater treatment network over a two-week period.\n \n B iography:\n Josh Taylor received the B.S. from Carnegie Mellon University i n 2006 and the Ph.D. from the Massachusetts Institute of Technology in 201 1\, all in Mechanical Engineering. From 2011 to 2012\, he was a postdoctor al researcher at the University of California\, Berkeley. He joined the Un iversity of Toronto in 2013\, where he is currently the Percy Edward Hart Associate Professor of Electrical and Computer Engineering. His research f ocuses on control and optimization of energy and water infrastructure.\n \n \n DTSTART:20220922T200000Z DTEND:20220922T210000Z LOCATION:CA\, ZOOM SUMMARY:Convex Optimization of Bioprocesses URL:/cim/channels/event/convex-optimization-bioprocess es-351868 END:VEVENT END:VCALENDAR