| S. Jablonski and C. Bussler. Workflow-Management: Modelling Concepts, Architecture and Implementation. International Thomson Computer Press, 1996. |
....mutual requirements of the individual VE components. An infrastructure for VE management should help to govern the dependencies that characterise the execution of VE business processes, such as task assignments, prerequisite and temporal constraints [14] which require the development of a WFMS [11]. Currently, workflow systems are the most important model used by organisations to automate their business processes, supporting their specification, execution and monitoring. A business process is precisely a workflow that is, a set of activities to be executed in some order, involving ....
....automate their business processes, supporting their specification, execution and monitoring. A business process is precisely a workflow that is, a set of activities to be executed in some order, involving multiple collaborating entities in a distributed environment to accomplish a given task [11]. A workflow system is meant to improve the process throughput, to promote a better use of resources, and to enable efficient process tracking [24] Moreover, since workflow applications are subject to frequent changes caused by the business environments [6] flexibility and adaptability are ....
S. Jablonski and C. Bussler. Workflow-Management: Modelling Concepts, Architecture and Implementation. International Thomson Computer Press, 1996.
....should also express constrains and conditions such as when the activities should be executed, a specification of who can or should perform each activity, and what tools and programs (such as word processors, CAD and CASE systems, spreadsheets and others) are needed during the activity execution. [3]. A WFMS can be seen as a set of control applications and interfaces (to other tools and applications) that allow the project, definition, execution, and monitoring of workflows. The Workflow Management Coalition (WFMC) specifies a set of terms, definitions, and interfaces that standardizes most ....
S. Jablonski, C. Bussler. Workflow Management - Modelling Concepts, Architecture and Implementation. International Thomson Computer Press, 1996.
....A possible implementation of such an execution model is a workflow management model. Therfore, we adapt a light weight and decentralised workflow management system based on the WWW and Java [13] Even the tutoring process model can easily be adopted to a workflow model as suggested by Jablonski [14]. He defines composite and elementary workflows. Composite workflows consist of elementary ones and define their scheduling order. Elementary workflows are unique tasks performed by one user. Considering the situation task model, a situation can be seen as a composite workflow containing separate ....
S. Jablonski, C. Bussler, Workflow Management -- Modelling Concepts, Architecture and Implementation, International Thomson Computer Press, London, 1996.
.... can have multiple outcomes (e.g. depending on the adhoc decision of a human being) In order to handle this situation the planner must be able to do conditional planning [Peot and Smith, 1992] ffl hierarchically structured plans Traditionally workflows are defined in a hierarchical manner [Jablonski and Bussler, 1996] (see e.g. Figure 1) This has to be taken into account for the plan representation. ffl reuse of plan fragments Since the system uses hierarchically structured plans, it is reasonable to save workflow plans and plan fragments into a repository and to reuse them later on (e.g. as subworkflows in ....
....and Sheth, 1997] One of these systems, Wamo, was briefly described when we discussed the case of failure handling. The prototypical WFMS Mobile [Jablonski, 1994] allows the user to define his own control flow structures by means of petri net specifications for later use in his workflow models [Jablonski and Bussler, 1996]. This can be seen as a first step towards a user definable workflow meta model. However, unlike our system, Mobile s meta model cannot be dynamically adjusted at runtime. A completely formal specification of a workflow description language and its execution semantics (based on relational ....
Jablonski, S. and Bussler, C. (1996). Workflow Management - Modelling Concepts, Architecture and Implementation. International Thomson Computer Press, London.
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S. Jablonski, C. Bussler. Workflow Management: Modelling Concepts, Architecture and Implementation, International Thomson Computer Press, London, 1996.
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