I know one researcher here at Brazil. His name is Daniel Pacheco Lacerda and it is his profile into Research Gate: https://www.researchgate.net/profile/Daniel_Lacerda.
I'm working on constraints programming techniques, a sub-field of Artificial Intelligence. It is a programming paradigm that can be used in industrial planning too ...
A good source for determining an answer to this question is to contact TOCICO (theory of constraints international certification organization) directly. They have about 1000 members, primarily consultants, and many guest members. They archive over 600 video presentations on TOC implementations from around the world. Their executive director might be able to provide information on what countries have members. The next TOCICO International Conference is being held in Cape Town, South Africa.