Simplifying construction of complex workflows for non-expert users of the Southern California Earthquake Center Community Modeling Environment. - Philip Maechling; Hans Chalupsky; Maureen Dougherty; Ewa Deelman; Yolanda Gil; Sridhar Gullapalli; Vipin Gupta; Carl Kesselman; Jihie Kim; Gaurang Mehta; Brian Mendenhall; Thomas A. Russ; et al. (SIGMOD Rec., 2005)