1. Operational Research (O.R.) case studies www.theorsociety.com

2. What’s the problem? www.theorsociety.com

3. You are a manager in a school… You are planning fire evacuation procedures You are particularly concerned about evacuating the children from the two canteens www.theorsociety.com

4. You want to get all the children out of the buildings in 2 minutes But there are several small doorways they need to go through to get outside www.theorsociety.com

5. At the busiest time there are 550 children in the two canteens Is it possible to get them all out in time? www.theorsociety.com

6. What do we need? www.theorsociety.com

7. Something like this… Outside Area 1 Outside Area 2 Outside Area 3 Canteen 1 Canteen 2 A B C D www.theorsociety.com

9. Then we are ready to consider how long it will take to get the children out www.theorsociety.com

10. Let’s summarise the problem We need to evacuate 550 children from the school canteens We need the children to pass safely through a series of doorways with limited capacity www.theorsociety.com

11. Is it possible to get all the children out in two minutes? www.theorsociety.com

12. This is an example of www.theorsociety.com

13. Other examples of where this might be used Pipelines (oil, gas, water) Transport networks Delivery or distribution systems www.theorsociety.com

14. Over the next few lessons we will learn how to approach problems of this type… www.theorsociety.com

15. O.R.:THE SCIENCE OF BETTER For more about O.R. visit www.scienceofbetter.co.uk www.theorsociety.com