International Workshop on Conceptual Modeling for Life Sciences Applications,International Workshop on Evolution and Change in Data Management,International Workshop on Foundations and Practices of UML,International Workshop on Modeling Mobile Applications and Services,International Workshop on Requirements, Intentions and Goasls in Conceptual Modeling,International Workshop on Semantic and Conceptual Issues in Geographic Information Systems,International Workshop on Web Information Systems Modeling.Advances in conceptual modeling - challenges and opportunities : ER 2008 Workshops CMLSA, ECDM, FP-UML, M2AS, RIGiM, SeCoGIS, WISM, Barcelona, Spain, October 20 - 23, 2008 : proceedings /.,.