BEGIN:VCALENDAR METHOD:REQUEST PRODID:Microsoft Exchange Server 2010 VERSION:2.0 BEGIN:VTIMEZONE TZID:Eastern Standard Time BEGIN:STANDARD DTSTART:16010101T020000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=1SU;BYMONTH=11 END:STANDARD BEGIN:DAYLIGHT DTSTART:16010101T020000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=2SU;BYMONTH=3 END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT ORGANIZER;CN=Michael McDonald:mailto:michael.mcdonald@fsu.edu DESCRIPTION;LANGUAGE=en-US:"Bi-level Optimization for Multi-Period Charging Infrastructure Planning in Waste Collection"\n\nYanshuo Sun\nIndustrial E ngineering\,\nFlorida A&M University-Florida State University (FAMU-FSU) C ollege of Engineering\n\nPlease feel free to forward/share this invitation with other groups/disciplines that might be interested in this talk/topic . All are welcome to attend.\n\nNOTE: In-person attendance is requested in our 499 Dirac Science Library (DSL) Seminar Room. Zoom access is intended for external (non-departmental) participants only.\n\nhttps://fsu.zoom.us /j/94273595552\nMeeting # 942 7359 5552\n\n\nWednesday\, Oct 14\, 2026\, S chedule:\n\n *\n3:00 to 3:30 PM Eastern Time (US and Canada)\n *\nā˜• Nespresso & Teatime - 417 DSL Commons\n\n *\n3:30 to 4:30 PM Eastern Tim e (US and Canada)\n *\nšŸ•Ÿ Colloquium - 499 DSL Seminar Room\n\nAbstr act:\nThe planning of charging infrastructure over time is crucial to addr ess the growing need for electric vehicles. The problem is characterized b y the interaction between the decisions of infrastructure planners and use rs at two levels. Despite the extensive adoption of bilevel programming mo dels to capture this complex interaction\, existing models typically addre ss the problem within a single planning period. To address this gap\, we p resent the first multi-period bilevel optimization model for charging infr astructure planning\, with an application to solid waste collection\, and develop two solution algorithms: a decomposition-based approach for solvin g the electric vehicle routing problem (EVRP) at the lower level\, and an exact dynamic programming (DP) algorithm for solving the charging station location problem at the upper level. The proposed decomposition-based appr oach decomposes the routing and charging decisions into two separate probl ems and follows a routing-first-charging-second strategy to strike a more preferable trade-off between solution quality and computation time. The DP algorithm is implemented through a labeling approach with problem-specifi c dominance rules that evaluates only the necessary DP states. Computation al tests show that the decomposition-based approach reduces computation ti me by 99.8% on average relative to a commercial solver\, while maintaining an average optimality gap below 1.5%. The real-world case study also show s that the labeling approach achieves the same solution as the brute-force approach while evaluating 99.9% fewer planning paths. The proposed soluti on approaches can be adopted by municipalities to address the charging inf rastructure planning problem for their electrified SWC operations.\n\n\nAd ditional colloquium details can be found here:\nhttps://www.sc.fsu.edu/new s-and-events/colloquium/colloquium-with-yanshuo-sun-2026-10-14\n\nšŸŽ¦ Colloquium recordings will be made available here:\nhttps://www.sc.fsu.edu/news-and-events/semi nars\n\n UID:040000008200E00074C5B7101A82E0080000000009B70522C459DD01000000000000000 010000000C106E5DED592A94983590E2BECCF2B64 SUMMARY;LANGUAGE=en-US:Scientific Computing Colloquium with Yanshuo Sun DTSTART;TZID=Eastern Standard Time:20261014T153000 DTEND;TZID=Eastern Standard Time:20261014T162500 CLASS:PUBLIC PRIORITY:5 DTSTAMP:20261011T210442Z TRANSP:OPAQUE STATUS:CONFIRMED SEQUENCE:1 LOCATION;LANGUAGE=en-US:https://fsu.zoom.us/j/94273595552 X-MICROSOFT-CDO-APPT-SEQUENCE:1 X-MICROSOFT-CDO-OWNERAPPTID:2125092917 X-MICROSOFT-CDO-BUSYSTATUS:TENTATIVE X-MICROSOFT-CDO-INTENDEDSTATUS:BUSY X-MICROSOFT-CDO-ALLDAYEVENT:FALSE X-MICROSOFT-CDO-IMPORTANCE:1 X-MICROSOFT-CDO-INSTTYPE:0 X-MICROSOFT-DONOTFORWARDMEETING:FALSE X-MICROSOFT-DISALLOW-COUNTER:FALSE X-MICROSOFT-REQUESTEDATTENDANCEMODE:DEFAULT X-MICROSOFT-ISRESPONSEREQUESTED:FALSE X-MICROSOFT-LOCATIONDISPLAYNAME:https://fsu.zoom.us/j/94273595552 X-MICROSOFT-LOCATIONSOURCE:None X-MICROSOFT-LOCATIONS:[{"DisplayName":"https://fsu.zoom.us/j/94273595552"\, "LocationAnnotation":""\,"LocationUri":""\,"LocationStreet":""\,"LocationC ity":""\,"LocationState":""\,"LocationCountry":""\,"LocationPostalCode":"" \,"LocationFullAddress":""}] BEGIN:VALARM DESCRIPTION:REMINDER TRIGGER;RELATED=START:-PT5M ACTION:DISPLAY END:VALARM END:VEVENT END:VCALENDAR