The Second International Symposium on Ubiquitous Intelligence and Smart Worlds (UISW 2005) -- IFIP International Symposium on Network-Centric Ubiquitous Systems (NCUS 2005) -- The First International Workshop on Security in Ubiquitous Computing Systems (SecUbiq 2005) -- The 1st International Workshop on RFID and Ubiquitous Sensor Networks (USN 2005) -- The International Workshop on Trusted and Autonomic Ubiquitous and Embedded Systems (TAUES 2005).