earticle

영어

Locating blood banks is a strategic decision problem. It is necessary to consider the risk of facility disruptions in the design stage because blood banks may fail as a result of public emergencies. Taking the timeliness and reliability of blood relief as goals, a reliability P-median location model for new blood banks was developed by considering different probabilities of facility failure in different regions. According to the characteristics of the model, a linearization technique was applied to convert the model and a Lagrangian Relaxation (LR) algorithm was proposed to solve the problem. A case study was given based on one of affected areas in the Wenchuan Earthquake, i.e., Aba prefecture in Sichuan province in China. A group of numerical examples were given to test and verify the model and algorithm. The results show that the proposed algorithm is efficient.