Special Issue: Second International Workshop on Workflow Management and Applications in Grid Environments

This special issue of Concurrency and Computation: Practice and Experience contains selected high-quality papers from the second International Workshop on Workflow Management and Appli-cations in Grid Environments (WaGe2007), which was held on 17 August 2007 in Urumqi China [1]. The WaGe workshop series was aimed at providing an international forum for the presentation and discussion of research and development trends regarding workflow support in Grid environments. WaGe2007 attracted a number of international attendants. Deep discussion between attendants was actively performed. Especially, the discussion tried to view workflow management in Grid envi-ronments from different perspectives and areas. Different views can provide different potentials for further research and development. Grid workflow has been under investigation for several years [2–6]. In particular, the special issue titled Workflow in Grid Systems in Concurrency and Computation: Practice and Experience was a key step [7]. The special issue was edited by Professor Geoffrey C. Fox and Professor Dennis Gannon from Indiana University in the U.S.A. A follow-up was the special issue in the same journal for WSGE2006 (First International Workshop on Workflow Systems in Grid Environments) [8]. This WaGe2007 special issue is a further follow-up of the two special issues to further boost th