What Is Operations Research? (Definition and Examples)

https://www.indeed.com/career-advice/finding-a-job/what-is-operations-r…
https://www.lancaster.ac.uk/~blackb/whatisOR.html
https://www.ifors.org/what-is-or/
https://www.britannica.com/topic/operations-research
https://coral.ise.lehigh.edu/magh/present/stetson01.pdf