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X-WR-CALNAME:CEE Seminar: Dynamic Switching in Fixed and Flexible Transit S
 ervices under Uncertainty by Dr. Qianwen Guo 
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260910T195311Z
UID:tag:localist.com\,2008:EventInstance_39545887536871
DTSTART:20220330T153000Z
DTEND:20220330T163000Z
DESCRIPTION:A dynamic model for optimally switching transit service types u
 nder demand uncertainty is proposed for “smart transit” applications a
 nd for operating shared autonomous transit fleets. The model assumes a reg
 ion that requires last-mile transit service either with fixed-route buses 
 or flexible-route\, on-demand buses. To consider the uncertain evolution o
 f demand density over time\, an Ornstein-Uhlenbeck process is used. The op
 timal policy is determined by solving the switching problem as a market en
 try and exit real options model. The analysis using the model on a benchma
 rk computational example illustrates the presence of a hysteresis effect\,
  an indifference band that is sensitive to transportation system state and
  demand parameters\, as well as the presence of switching thresholds that 
 exhibit asymmetric sensitivities to transportation system conditions. The 
 proposed policy is computationally compared in a 24-hour simulation to a 
 “perfect information” set of decisions and a myopic policy that has be
 en dominant in the flexible transit literature\, with results that suggest
  the proposed policy can reduce by up to 72% of the excess cost in the myo
 pic policy. Computational experiments of the “modular vehicle” policy 
 demonstrate the existence of an option premium for having flexibility to s
 witch between two vehicle sizes.\n\nDr. Qianwen Guo is an Assistant Teachi
 ng Professor of Transportation Engineering in the Department of Civil and 
 Environmental Engineering at the Florida A&M University-Florida State Univ
 ersity (FAMU-FSU) College of Engineering. Prior to her current appointment
 \, she was a Postdoctoral Research Associate at the University of Maryland
 \, College Park from 2016 to 2018. Dr. Guo has broad research interests in
  transportation systems optimization problems\, especially in public trans
 it\, ridesharing\, phased development of civil infrastructure systems\, as
  well as transportation economics. She has published more than ten papers 
 on a wide range of research topics as the first author or corresponding au
 thor in renowned transportation journals\, including Transportation Resear
 ch Parts A\, B and C. She has also been involved in federal and state fund
 ed projects in various roles. In addition\, Dr. Guo has hands-on experienc
 e teaching and advising students from diverse backgrounds. She regularly t
 eaches a few civil engineering courses\, such as Introduction to Transport
 ation Engineering\, Traffic Engineering\, and Introduction to Geomatics En
 gineering. She was featured by the Society of Asian Scientists & Engineers
  on the 2021 World Engineering Day at the FAMU-FSU College of Engineering.
LOCATION:10555 W Flagler Street\, EC 3930
SUMMARY:CEE Seminar: Dynamic Switching in Fixed and Flexible Transit Servic
 es under Uncertainty by Dr. Qianwen Guo 
URL;VALUE=URI:https://calendar.fiu.edu/event/cee_seminar_dynamic_switching_
 in_fixed_and_flexible_transit_services_under_uncertainty_by_dr_qianwen_guo
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