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Nowadays, we are assisting to a paradigmatic shift for the development of web applications due to the pervasive distribution of their components among a lot of servers, which are dynamically interconnected by web links. As a consequence, the application logic is often defined by exploiting workflow languages since they are more suitable to address the complexity of these new running environments....
Most work on adaptive workflows offers insufficient flexibility to enforce complex policies regarding dynamic, evolvable and robust workflows. In addition, many proposed approaches require customized workflow engines. This paper presents a portable framework for realistic enforcement of dynamic adaptation policies in business processes. The framework is based on the Model-View-Controller (MVC) pattern,...
In the last years, autonomous and adaptive processes have became more and more important. Even business processes are more complex today. The more complex a system becomes, the more difficult it is to handle changed requirements. This increases the need for adaptation abilities of workflows. In these new workflow systems, autonomy would have great impact regarding the possible usability of such workflows...
Pervasive applications, like smart living, geriatrics care, agricultural development, etc, are rapidly developed recently. Context-awareness and workflow-centric are important characteristics of the applications. Service-oriented architecture which provides flexibility in integrating heterogeneous devices and communication networks might improve the execution of pervasive applications. To integrate...
Mobile commerce (M-commerce) is an attractive research area due to its relative novelty, rapid growth, and great potential in business applications. Unfortunately, there are a number of constraints effecting both performance and usability of mobile devices and network bandwidth. In addition, existing M-commerce applications are lack of fully automated business processes and still require significant...
In a Service-Oriented Architecture (SOA) based on Web Service technology the services typically communicate with each other by passing data values directly from one service to another. In the case the services are orchestrated by workflows the services receive their input values from the workflow engine and return their calculated results back to the engine by value. In this paper we show several...
In this paper we introduce a new modeling tool for constraint handling in the area of workflow technology. The constraint handlers can be used to improve the quality of business processes but without changing already existing business logic. Todays workflow languages provide no possibility to model constraints and the actions in case the constraints get violated explicitly. Fault and event handling...
The increasing interest in Web services has led to a recent proliferation of service-oriented platforms for supporting Scientific Workflows in a variety of e-Science domains. These platforms mainly address the application-specific composition and enactment of workflows. However, since scientific workflows are characterized by complex computations and large volumes of data, non-functional criteria...
Workflow management system (WfMS) which focuses on controlling, monitoring, optimizing and supporting business processes management is extensively used in knowledge management systems (KMS). But traditional WfMS only work with complete processes on the basis of process models and therefore fail to support a large class of knowledge intensive business processes such as content-oriented integration...
Nowadays, businesses need to change their operational processes in a flexible and agile manner to keep thecompetitive edge. As an enabling technology, workflow management systems (WfMS) can be used tomodel and run business processes through therdquoorchestrationldquo of services that are based on buildingblocks with business value. However, they often useproprietary interfaces. This results to a tight...
In order to deal with dynamic events occurring in the system, we designed three basic operations over this ALNet: (i) search for end services that can trigger the target event, (ii) search for source nodes that have reachability to at least one of the end nodes, and (iii) select the source node that gives the best composition cost. However, with the addition of more and more services, the ALNet becomes...
The development of software systems for scientific exploration and discovery through computation has an important issue to address: the management of underlying computational steps. To support composition of Web and Grid services, standard workflow languages and workflow execution engines were built but management capabilities are not yet entirely explored. In the context of Grid services, we propose...
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