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Operations and Logistics Research Seminars

Past Operations and Logistics Division and Centre for Operations Excellence Seminars

Past OPLOG Division Seminars - September 2016 - July 2017

Past OPLOG DIVISION AND COE SEMINARS - Sept 2015-Aug 2016

Past OPLOG Seminars January 2015 -  August 2015
Past OPLOG Seminars - August 2014 - December 2014
Past OPLOG Seminars September 2013 - May 2014

Past OPLOG Seminars - September 2012 - May 2013

PAST OPLOG Division Seminars September 2017 - Onwards

 


Date: Monday, January 29th, 2018

Speaker: Gonzalo Romero, Rotman School of Management, University of Toronto
Topic: "Consumer Education and Reverse Logistics in the Base of the Pyramid"
Time: 2:30PM - 3:30PM
Place: Henry Angus 969

Abstract
: We introduce the value-access paradox that occurs in many developing countries: consumers that would most benefit from existing life-improving products are those that can least find and afford them. We model the operations of a social enterprise in a developing market that tackles this paradox by distributing life-improving technologies. Its goal is to profitably increase their adoption by selling through local retailers. The retailers sell to consumers with uncertain product valuation who suffer financial distress. The distributor considers two strategies: (i) improved consumer education and (ii) a higher salvage value for returned products. We prove that increasing the product's salvage value is always beneficial for the distributor, while improving the consumer education level may be detrimental. Moreover, this effect is weakened (strengthened) if the consumers' financial distress is high (low), and the distributor highly values product adoptions. Furthermore, in contrast to developed markets, a more expensive product with higher salvage value can lead to a Pareto-improvement in supply-chain performance, i.e. lead to lower prices to consumers, more product adoptions, more retailer profits, and better distributor's objective value.

This is joint work with Andre Calmon (INSEAD), and Diana Jue-Rajasingh and Jackie Stenson (Essmart, http://www.essmart-global.com/).



Date: Monday, February 5th, 2018

Speaker: David Shmoys, ORIE, Cornell University
Topic:"Models and Algorithms for the Operation and Design of Bike-sharing Systems"
Time: 2:30PM - 3:30PM
Place: Henry Angus 969

Abstract: Bike-sharing systems are changing the urban transportation landscape; for example, New York launched the largest bike-sharing system in North America in May 2013, with individual trips expected to exceed 15 million rides for 2017. We have worked with Citibike, using analytics and optimization to change how they manage the system. Huge rush-hour usage imbalances the system - we answer the following two questions: where should bikes be at the start of a day and how can we mitigate the imbalances that develop?

We will survey the analytics we have employed for the former question, where we developed an approach based on continuous-time Markov chains combined with integer programming models to compute daily stocking levels for the bikes, as well as methods employed for optimizing the capacity of the stations. For the question of mitigating the imbalances that result, we will describe both heuristic methods and approximation algorithms that guide both mid-rush hour and overnight rebalancing, as well as for the positioning of corrals, which have been one of the most effective means of creating adaptive capacity in the system. More recently, we have guided the development of Bike Angels, a program to incentivize users to make “rebalancing rides”, and we will describe its underlying analytics.

This is joint work with Daniel Freund, Shane Henderson, and Eoin O’Mahony, as well as Hangil Chung, Nanjing Jian, Ashkan Nourozi-Fard, and Alice Paul.



Date: Monday, February 26th, 2018

Speaker: Varun Gupta, University of Chicago Booth School of Business
Time: 2:30PM - 3:30PM
Place: Henry Angus 969

Abstract: TBA



Date
: Friday, March 2nd, 2018

Speaker: Abraham Punnen, Simon Fraser University
Topic: TBA
Time: 12:30PM - 1:30PM
Place: Henry Angus 969

Abstract: TBA



Date: Monday, March 12th, 2018

Speaker: Robert Batt, Wisconsin School of Business
Time: 2:30PM - 3:30PM
Place: Henry Angus 969

Abstract: TBA



Date: Monday, March 19th, 2018

Speaker: Dan Adelman, University of Chicago Booth School of Business
Topic: TBA
Time: 2:30PM - 3:30PM
Place: Henry Angus 969

Abstract: TBA



Date: Monday, March 26th, 2018

Speaker: Jaelynn Oh, University of Utah
Time: 2:30PM - 3:30PM
Place: Henry Angus 969

Abstract: TBA