Mobile Computing, Applications, and Services 9th International Conference, MobiCASE 2018, Osaka, Japan, February 28 - March 2, 2018, Proceedings - Murao, Kazuya; Murao, Kazuya; Ohmura, Ren; Ohmura, Ren; Inoue, Sozo; Inoue, Sozo; Gotoh, Yusuke; Gotoh, Yusuke (Springer International Publishing : Imprint: Springer, 2018)