[Institution of Engineering and Technology 11th International Symposium on Operations Research and its Applications in Engineering, Technology and Management 2013 (ISORA 2013) - Huangshan, China (23-25 Aug. 2013)] 11th International Symposium on Operations Research and its Applications in Engineering, Technology and Management 2013 (ISORA 2013) - Equilibrium strategies in an M/M/1 queue with setup times and a single vacation policy