Yorkshire & Humberside OR Group (YHORG)

This regional society meets regularly to enable members to network with other operational researchers in their local area and to expand their knowledge of OR in breadth and depth.

We put on meetings and other events, which are generally free admission and open to all, giving members the freedom to invite clients and others outside OR who are interested in the subject.

Connect with us

You can find the latest news of this group’s activities as well as dates and details of upcoming and past events. You can also join this group’s email distribution list and get in direct touch with the group’s organisers through the ‘get in touch’ form. Any documents, such as presentation slides and promotional leaflets, are available through the ‘related documents’ box below.

Committee details

Dong Li Co-Chair
Max Moullin Co-Chair
Diego Ruiz Hernandez Co-Chair
Giles Hindle Regional Representative on General Council
Suchi Collingwood  
Aidan Cross
Gail Ludlam  
Tetyana Mykhaylyk
Christina Phillips  
Syed Salleh  
Sajid Siraj
Ribblehead Viaduct.jpg

Join us for our next event

YHORG is back!

The Yorkshire and Humberside OR Group is having its first meeting for a couple of years. This meeting will be online, but future in-person meetings are planned. 

Yorkshire and the Humber RS Event - Supply Chain Structural Complexity: The Enemy Within. The challenges of competition-driven product proliferation

Date: 14 June 2022; 17.30 - 19.00

Venue: Online (Zoom)

Speakers: Professor Mozart Menezes, Dr Diego Ruiz-Hernandez

register here

About the Event

Fierce competition has been blamed as the engine behind product proliferation and the complexity that proliferation brings. Product proliferation has been blamed for widespread productivity losses in manufacturing. In this presentation we will summarize results from different work but will give special attention to insights from two sources using game theory models (modelling horizontal and vertical competition). In the vertical competition model we analyse different scenarios depending on which member has the first-mover advantage in terms of pricing and on which member has the power to determine the number of product variants that are put on sale. The objective of this work is to study the interaction between pricing and assortment strategies and to investigate how the power structure affects these decisions in a supply chain. In the horizontal competition model we consider how the number of product variants compares with that of a monopolist.

About the Speakers

Mozart B.C. Menezes

Dr. Mozart Menezes is a Professor at the NEOMA Business School (Rouen–Paris–Reims), France, where is the Director of the Area of Expertise The Complexity Advantage, and also leads a focus-group in Value Chain Complexity and Risk. Previously, he has been a faculty member at the MIT-Zaragoza Logistics Center; at HEC–Paris among others, and an affiliate researcher at Massachusetts Institute of Technology (MIT)– Boston, USA.  Dr. Menezes has been involved, at different levels, with several firms including Alcatel-Lucent, Danone, General Motors, Procter & Gamble, Solutia,  Sonoco, among others. He obtained his PhD degree in Operations Management from the Rotman School of Management, University of Toronto, Canada. He has published in top leading journals of his fields such as Operations Research, European Journal of Operational Research, International Journal of Production Economics, Transportation Research - B, PLOS One, and Decisions Sciences, among others.

Diego Ruiz-Hernandez

Diego Ruiz-Hernández holds a PhD in Operational Research from the Universitat Pompeu Fabra in Catalonia. He is currently Senior Lecturer in Management Science at Sheffield University Management School. Previously, he was faculty member at the following institutions: Universitat Pompeu Fabra, Universidad de Navarra, and the University College for Financial Studies.  He has been a visiting lecturer at Kedge Business School, and NEOMA Business School, both in France, for several years.

His research covers, but is not limited to, fields in the areas of mathematical programming, combinatorial optimisation, discrete and network location, stochastic scheduling and dynamic resource allocation.

He has published scientific articles in international journals as Computers and Operations Research, European Journal of Operational Research, Expert Systems with Applications.  International Journal of Production Economics, and Transportation Research B, among others.

Diego is currently co-PI of two Catapult Projects at the Advanced Manufacturing Centre in Sheffield.

register here

Related Documents

Sort By
  • Title
  • Author
  • Published
  • Rev
Title Author Published Rev
Modelling the Northern Powerhouse - report Aidan Cross 03/12/2018 1.0  
Modelling the Northern Powerhouse - slides Aidan Cross 29/11/2018 1.0  
OR and Data Science: a match Dr. Giles A. Hindle & Prof Richard Vidgen 25/02/2016 1.0  
OR and Data Science: a match made in heaven? Dr. Giles A. Hindle, Professor Richard Vidgen 24/02/2016 1.0  
Report on YHORG meeting held on 8/5/15 Sarah Fores 21/05/2015 1.0  

Get in touch

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