A Stock Pre-positioning Model to Maximize the Total Expected Relief Demand of Disaster Areas

The complexity and uncertainty in performing emergency logistics response require along-term preparation and planning. In this paper, a stock pre-positioning model is considered to support an emergency disaster relief response against the event of earthquake. In this model, a maximum response time limit, budget availability, multiple item types, and capacity restrictions are considered to maximize the total expected relief demand of disaster areas covered by existing distribution centers. The decision of distribution centers to cover a disaster area and the amount of supplies to be stocked in each distribution center are simultaneously determined based on the model. The proposed model is applied to a real case with 33 disaster areas and 16 distribution centers in Indonesia. Then a sensitivity analysis is performed by changing the budgets and the maximum response time.