The fluid and diffusion approximation for queuing modeling are used to investigate the emergency supply and inventory situations for repairable and expensive sub-indentured items in a large and complex multi-indentured multi-echelon system. It is shown that this approach is a very effective technique for testing emergency situations of complex systems. Various numerical examples are solved to illustrate the approach and to show the dynamics during an emergency situation. © 1989.
Jung, M., & Lee, E. S. (1989). A multi-echelon and multi-indenture repairable item queuing model during emergencies. Mathematical and Computer Modelling, 12(7), 851–864. https://doi.org/10.1016/0895-7177(89)90140-4