An Integer Programming Model for the Dynamic Location and Relocation of   Emergency Vehicles: A Case Study
  In this paper, we address the dynamic Emergency Medical Service (EMS) systems. A dynamic location model is presented that tries to locate and relocate the ambulances. The proposed model controls the movements and locations of ambulances in order to provide a better coverage of the demand points under different fluctuation patterns that may happen during a given period of time. Some numerical experiments have been carried out by using some real-world data sets that have been collected through the French EMS system. 
Mahdi Moeini, Zied Jemai, Evren Sahin
cs.AI