We investigate emerging mobile crowd sensing (MCS) systems. in which new cloud-based platforms sequentially allocate homogenous sensing jobs to dynamically-arriving users with uncertain service qualities. Given that human beings are selfish in nature. it is crucial yet challenging to design an efficient and truthful incentive mechanism to encourage users to participate. http://www.diegojavierfares.com/best-price-Vinyl-Wall-Decal-Sticker-Gymnastic-Rings-815-quick-super/