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 - September 2015 - August 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

OPLOG Division Seminars - September 2017 - ONWARDS

Date: Monday, April 30th, 2018

Speaker: Tava Olsen, The University of Auckland
Title:  "Modelling Contracts and Incentives in Agricultural Cooperative Supply Chains"
Time: 2:30PM - 3:30PM
Place: Henry Angus 968

Abstract: In agricultural marketing co-operatives (co-ops), a group of farmers, or growers, collaborate under a single cooperative organizational structure to process and market their products. The trade-offs faced within the supply chain are often different to those faced by traditional investor-owned firms.  For example, most co-ops pledge to take all product produced by farmers, rather than being able to place specific orders with suppliers. Further, operational and financial decisions become inseparable because capital investment decisions are linked to the co-op's economic transactions with its members. This is particularly true for so-called proportional investment co-ops, where farmers' equity is required to be in proportion to their patronage. That is, farmers who supply a greater quantity of the given product are required to supply a proportionately higher amount of equity for the co-op. Supply yield uncertainty adds another dimension to the difficulty of coordinating the supply chain. In this talk we consider contacts and incentives in the agricultural supply chain. We present two specific models. The first is a game-theoretic model when farmers' efforts lead to higher quality. The second is a Markov decision process wherein the decisions of processing quantity interact with the financial decisions of retained earnings and short term loans.

: Monday, May 7th, 2018

Speaker: Jonathan Li, University of Ottawa
Title:  "Optimization for measuring risk in stochastic programs"
Time: 2:30PM - 3:30PM
Place: Henry Angus 969

Abstract: Accounting for the adverse impact of "non-average" events has become essential in many applications involving decision making under uncertainty. Its implementation through decision models, namely stochastic programs, requires careful measurement of risk that reflects one's concern about uncertain outcomes. Important theories such as convex risk measures outline conditions required for risk measurement but provide little guidance for cases not meeting the conditions. Unfortunately, such cases are more than common in real-life situations. In particular, in this talk, we study cases where the distribution required by a law invariant risk measure is not available and/or the risk preference required by a risk measure cannot be identified. We aim to provide theoretical, computational, and empirical evidence that in these cases optimization can be a powerful tool to measure risk in a systematic fashion that is hard to achieve otherwise.  Applications to operation management and finance will be presented.

Date: Monday, May 9th, 2018

Speaker: Nitish Jain, London Business School, UK
Title:  "TBA"
Time: 12:30PM - 1:30PM
Place: Henry Angus TBC

Abstract: TBA