In this paper we address the problem of automatically generating job workflows for the Grid. These workflows describe the execution of a complex application built from individual application components. In our work we have developed two workflow generators: the first (the Concrete Workflow

the use of Petri nets in the context of workflow management. Petri nets are an established tool for modeling and analyzing processes. On the one hand, Petri nets can be used as a design language for the specification of complex workflows. On the other hand, Petri net theory provides for powerful analysis

commercial workflow technology and extend the scope and mission of workflow management systems to support increased workflow automation in complex real-world environments involving heterogeneous, autonomous, and distributed information systems. In particular, we discuss how distributed object management

We consider the problem of task allocation in crowdsourc-ing systems with multiple complex workflows, each of which consists of a set of inter-dependent micro-tasks. We propose Budgeteer, an algorithm to solve this problem under a bud-get constraint. In particular, our algorithm first calculates

Abstract Workflow plays a major role in nowadays business and therefore its requirement elicitation must be accurate and clear for achieving the closest solution to business's needs. Due to Web applications popularity, the Web is becoming the standard platform for implementing business

dedicated to protein structure homology modelling. It assists and guides the user in building protein homology models at different levels of complexity. A personal working environment is provided for each user where several modelling projects can be carried out in parallel. Protein sequence and structure

This paper describes the Pegasus framework that can be used to map complex scientific workflows onto distributed resources. Pegasus enables users to represent the workflows at an abstract level without needing to worry about the particulars of the target execution systems. The paper describes

Abstract. In this paper we propose and discuss mechanisms and implementation issues for moving the execution of computation-and timeconsuming workflows into the Cloud. These complex workflows are specified by Petri nets, more precisely reference nets using the Renew tool. We believe that Cloud

Traditional workflow models have obvious shortcomings in describing complex workflows. Such complexity is due not only to the hierarchical property of business process, but also to the complicated dependencies among tasks. In this paper, we first introduce a conceptual task model based on UML class

Abstract. Virtually all areas of human endeavor involve workflows-that is, coordinated execution of multiple tasks. In practice, this requires the assembly of complex workflows from semantically heterogeneous components. In this paper, we develop ontology-extended workflow components