Ubiquitous Computing and Ambient Intelligence. Context-Awareness and Context-Driven Interaction 7th International Conference, UCAmI 2013, Carrillo, Costa Rica, December 2-6, 2013, Proceedings - Urzaiz, Gabriel; Ochoa, Sergio F.; Bravo, José; Chen, Liming Luke; Oliveira, Jonice (Springer International Publishing : Imprint: Springer, 2013)