Grid and Distributed Computing : International Conferences, GDC 2011, Held as Part of the Future Generation Information Technology Conference, FGIT 2011, Jeju Island, Korea, December 8-10, 2011. Proceedings - Tai-hoon Kim, Hojjat Adeli, Hyun-seob Cho, Osvaldo Gervasi, Stephen S. Yau, Byeong-Ho Kang, Javier García Villalba ((Communications in Computer and Information Science))