Grid and pervasive computing : 8th international conference, GPC 2013 and colocated workshops : Seoul, Korea, May 9-11, 2013 : proceedings : GPC-13 : international workshop on ubiquitous and multimedia application systems (UMAS 2013) : international workshop DATICS-GPC 2013: design, analysis and tools for integrated circuits and systems : international workshop on future science technologies and application (FSTA 2013) : workshop on green and human information technology (GHIT 2013) : May 2013, Seoul, Korea.