ICPRAM 2015 4th international conference on pattern recognition applications and methods, Lisbon, Portugal, January 10-12, 2015, www.icpram.org : ICAART 2015 7th international conference on agents and artificial intelligence, Lisbon, Portugal, January 10-12, 2015, www.icaart.org ; ICORES 2015 4th International conference on operations research and enterprise systems, Lisbon, Portugal, January 10-12, 2015, www.icores.org ; BIOSTEC 2015 8th international joint conference on biomedical engineering systems and technologies, Lisbon, Portugal, January 12-15, 2015, www.biostec.org, BIODEVICES, BIOIMAGING, BIOINFORMATICS, BIOSIGNALS, HEALTHINF /