A Model for Supply-Chain Decisions for Resource Sharing with an Application to Ventilator Allocation to Combat COVID-19

Sanjay Mehrotra; Hamed Rahimian; Masoud Barah; Fengqiao Luo; Karolina Schantz

In this section, we present and discuss the numerical results for the case that there is no lead-time, i.e., L = 0 or there is a lead-time of 1 day. For most instances, we observed that even obtaining an integer feasible solution to (3) and (4) in the time limit was not possible. Therefore, we replaced these models with their expected value problem, where the stochastic demand is substituted with the expected demand. Then, we solved the resulting model. This heuristic yields an integer feasible solution to model (3) and (3) for all instances we tested in the time limit, and we report those results here. In Section 4.5.1, we provide the results on ventilator' shortage and inflow/outflow from/to FEMA for the case that there is no lead-time. We also analyze the effect of early ramp-up in production and lead-time on ventilators' shortage in Sections 4.5.2 and 4.5.3, respectively.