21-23 October 2006; Annalisa Terracina, Stefano Beco, Tom Kirkham, Julian Gallop, Ian Johnson, Damian Mac Randal, Brian Ritchie

Abstract:
The service orchestration problem is a problem of making multiple services coordinate themselves and communicate in an orderly fashion so as to accomplish a task more complex than the single tasks provided by the individual composing services. By enabling this orchestration in a controlled manner it is possible to create value-added services. The Akogrimo (Access to Knowledge through the Grid in a Mobile World) project is aiming to integrate Grid infrastructure in a nomadic and mobile world. The context in which users and services are available is a consequence of mobility, and could change very fast. Therefore in such a complex environment the effective orchestration of the available services is essential to the successful delivery of the task. In this paper we will explain how we envisaged these new challenges and the innovative and original solution that we propose.

References:
[1] ebXML’s BPSS, The Business Process Specification Schema Version 1.01 Business
[2] WS-BPEL Specifications, Business Process Execution Language for Web Services Version 1.1
[3] De Roure, at al. (2005) The Semantic Grid: Past, Present and Future. Proceedings of the IEEE 93(3) pp. 669-681
[4] J. Jaehnert et al: Detailed Overall Architecture. Akogrimo deliverable D3.1.2. 20.02.06. URL:http://www.akogrimo.org/download/Deliverables/Detailed Overall Architecture
[5] Chris Peltz, “Web Services Orchestration: a review of technologies, tools and standards”, http://devresource.hp.com/drc/technical_white_papers/WSOrch/WSOrchestration.pdf
[6] The Workflow Management Coalition, The Workflow Management Coalition
[7] W.M.P van der Aalst, “Don’t go with the flow: Web services standards exposed”, in Trends & Controversies issue of IEEE Intelligent Systems, Jan/Feb 2003
[8] Margie Virdell, e-business Architect, IBM Developer Relations, Business processes and workflow in the Web services world
[9] WSCI Specifications, http://titan.intalio.com/downloads/wsci-spec-10.pdf
[10] WS-CDL Specifications, Web Services Choreography Description Language Version 1.0
[11] S. Kirn et al: Akogrimo Testbed Description. 13.09.05 URL:http://www.akogrimo.org/download/ Deliverables/
[12] G.Laria et al: Architecture of the Application Support Services Layer. Akogrimo deliverable D4.4.1. 13.09.05 URL:http://www.akogrimo.org/download/ Deliverables/
[13] I. Foster, “What is the Grid? A Three Point Checklist”, GRID Today, July 20, 2002
[14] A. Litke, D. Skoutas and T. Varvarigou “Mobile Grid Computing: Changes and Challenges of Resource Management in a Μobile Grid Environment”, presented in Workshop: “Access to Knowledge through Grid in a Mobile Word
[15] Litke A, Skoutas D. Mobile Grid Computing: Changes and Challenges of Resource Management in a Mobile Grid Environment Practical Aspects of Knowledge Management 2004ld”, PAKM 2004 Conference, Vienna
[16] http://www.activebpel.org/
[17] J.Chen and Y. Yang, "Multiple States based Temporal Consistency for Dynamic Verification of Fixed-time Constraints in Grid Workflow Systems", Concurrency and Computation: Practice and Experience, 2006, 18, pp. 1-18.
[18] J.Chen and Y. Yang, "Selecting Necessary and Sufficient Checkpoints for Dynamic Verification of Fixedtime Constraints in Grid Workflow Systems", In Proc. of the 4th International Conference on Business Process Management(BPM2006), Lecture Notes in Computer Science, Vienna, Austria, Sept.

Source:
Proceedings of the Fifth International Conference on Grid and Cooperative Computing Workshops (GCCW′06)