Grid and Pervasive Computing Workshops International Workshops, S3E, HWTS, Doctoral Colloquium, Held in Conjunction with GPC 2011, Oulu, Finland, May 11-13, 2011. Revised Selected Papers - Rautiainen, Mika; Korhonen, Timo; Mutafungwa, Edward; Ovaska, Eila; Katasonov, Artem; Evesti, Antti; Ailisto, Heikki; Quigley, Aaron; Häkkilä, Jonna; Milic-Frayling, Natasa; Riekki, Jukka (Springer Berlin Heidelberg : Imprint: Springer, 2012)