Context-Aware Systems and Applications First International Conference, ICCASA 2012, Ho Chi Minh City, Vietnam, November 26-27, 2012, Revised Selected Papers - Vinh, Phan Cong; Hung, Nguyen Manh; Tung, Nguyen Thanh; Suzuki, Junichi (Springer Berlin Heidelberg : Imprint: Springer, 2013)