M.Sc Student | Raichshtain Efrat |
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Subject | Modeling and Solving the Evacuation and Treatment Problem of Casualties in Combat |

Department | Department of Industrial Engineering and Management |

Supervisors | Professor Moshe Kress |

Professor Michal Penn |

This research deals with different issues relevant to the evacuation and treatment of casualties during military operations. A casualty is treated in a series of medical facilities in the combat area (henceforth: the evacuation chain). A rapid transition of casualties through the evacuation chain is needed since time negatively affects the treatment effectiveness. This thesis deals with two complementary problems. Problem I: Estimating the quality of a given medical layout by defined service measures. Problem II: Finding the required medical layout in the combat area (i.e.: doctors and evacuation vehicles) so that certain service measures will be met. The main service measure is the proportion of treatment provided within a given time-slot, in which the treatment is most effective. We use a multi-period network to describe the transition of casualties through the evacuation chain. An appropriate IP problem is formulated for each one of the aforementioned problems. We show that these problems are NP-Complete by using a reduction from a flowshop problem. Two iterative algorithms that approximately solve the problems are presented. In each step of each one of the algorithms, a sub-problem of the discussed problem is solved as an IP problem. In each step of the algorithms, the values of certain variables (which correspond to the medical decisions already made) are fixed. These variables become parameters in the next steps of the algorithms. In the algorithm for finding the required medical layout in the combat area, the solution of a certain iteration is used as a lower bound for the size of the layout components in the next iterations.