18 research outputs found

    AnsÀtze zur Entwicklung von Workflow-basierten Anwendungssystemen:eine vergleichende Darstellung

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    Workflow-Management-Systeme werden entscheidende Impulse fĂŒr die Gestaltung von Informationssystemen der nĂ€chsten Generation geben. Ähnlich wie Datenbank-Systeme heute werden Workflow-Systeme zukĂŒnftig als Basistechnologie in komplexen Informationssystemen verwendet werden. Sie ermöglichen eine geschĂ€ftsprozeßnahe Darstellung der betrieblichen Ablauflogik und die explizite und zentrale Abbildung dieser GeschĂ€ftsprozeßlogik mittels spezialisierter Softwarekomponenten im Gegensatz zu der heute ĂŒblichen impliziten Codierung der Prozeßlogik in Applikationen. AnsĂ€tze zur Entwicklung von Workflow-basierten Anwendungen sind somit von großem Interesse. Anhand eines Vorgehens-Meta-Modells stellt der Beitrag zunĂ€chst wichtige in der Literatur vorgeschlagene Vorgehensmodelle zur Entwicklung von Workflow-Anwendungen einheitlich und klassifizierend dar. Darauf aufbauend erfolgt eine vergleichende Einordnung der verschiedenen AnsĂ€tze anhand von Kriterien, die basierend auf dem Meta-Modell hergeleitet werden.<br/

    Eine XML-basierte Systemarchitektur zur Realisierung flexibler Web-Applikationen

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    Nach einer kurzen Einleitung in die Thematik dieser Arbeit werden am Beispiel eines Lebensmittel-Lieferservices dessen Schwachstellen analysiert und Verbesserungspotenziale aufgezeigt. Nach der Diskussion eines allgemeinen Franchisekonzeptes und dessen Anwendung im Rahmen dieser Arbeit werden zunĂ€chst Anforderungen an eine adĂ€quate Systemarchitektur ermittelt, die Lösungen fĂŒr die Schwachstellen bietet und das Franchisekonzept unterstĂŒtzt. Aus den Anforderungen wird eine Systemarchitektur entwickelt und eine spezielle technische Umsetzung dieser Architektur vorgestellt. Es wird insbesondere auf die Anforderung der Personalisierung eingegangen, deren Realisierung im konkreten Beispiel PESS nĂ€her beleuchtet und durch eine Beispielsitzung illustriert wird. Eine technische Dokumentation der Implementierung des Prototypen PESS findet sich im Anhang.<br/

    The WASA2 object-oriented workflow management system

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    Business process management: A survey

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    Abstract. Business Process Management (BPM) includes methods, techniques, and tools to support the design, enactment, management, and analysis of operational business processes. It can be considered as an extension of classical Workflow Management (WFM) systems and approaches. Although the practical relevance of BPM is undisputed, a clear definition of BPM and related acronyms such as BAM, BPA, and STP are missing. Moreover, a clear scientific foundation is missing. In this paper, we try to demystify the acronyms in this domain, describe the state-of-the-art technology, and argue that BPM could benefit from formal methods/languages (cf. Petri nets, process algebras, etc.)

    Advanced Topics in Workflow Management: Issues, Requirements, and Solutions

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    This paper surveys and investigates the strengths and weaknesses of a number of recent approaches to advanced workflow modelling. Rather than inventing just another workflow language, we briefly describe recent workflow languages, and we analyse them with respect to their support for advanced workflow topics. Object Coordination Nets, Workflow Graphs, WorkFlow Nets, and an approach based on Workflow Evolution are described as dedicated workflow modelling approaches. In addition, the Unified Modelling Language as the de facto standard in object-oriented modelling is also investigated. These approaches are discussed with respect to coverage of workflow perspectives and support for flexibility and analysis issues in workflow management, which are today seen as two major areas for advanced workflow support. Given the different goals and backgrounds of the approaches mentioned, it is not surprising that each approach has its specific strengths and weaknesses. We clearly identify these strengths and weaknesses, and we conclude with ideas for combining their best feature

    Conceptual modeling of inter-dependencies between processes and data

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    The connection between business processes and data has drawn the attention of many research efforts within the community of business process management. In traditional activity-centric process models, representing how process activities access the information organized in a data model is a challenging task. Accordingly, a conceptual model that combines process and data aspects is still missing. In this paper, we propose an approach for supporting the integrated conceptual modeling of business processes and related data. We devise the concept of activity view to capture relevant aspects of data operations performed by process activities. Then, we show how such new representation allows the evaluation of consistency between different data operations, with the goal of detecting possible data modeling flaws at design time

    Advanced simulation of resource constructs in business process models

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    Simulation is often used as a tool to assess the performance of business processes. However, current business process simulation engines do not support advanced resource constructs, such as work allocation strategies and case attributes. Using only basic resource constructs leads to performance metrics that deviate significantly from the real process performance. Therefore, a clear need arises for simulation engines that incorporates advanced resource constructs. Addressing this need, we present the resource patterns that should be supported by simulation engines, a conceptual model to support them, and a prototype implementation of this conceptual model. The model and engine are evaluated in a simulation experiment that highlights utilization rates under different conditions. This experiment shows that the advanced resource constructs significantly outperform the basic resource constructs. From this we can also conclude that existing simulation engines must be extended with advanced resource constructs to properly simulate processes from practice that use these constructs

    GET Controller and UNICORN: Event-driven Process Execution and Monitoring in Logistics

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    Especially in logistics, process instances often interact with their real-world environment during execution. This is challenging due to the fact that events from this environment are often heterogeneous, lack process instance information, and their import and visualisation in traditional process engines is not sufficiently supported. To address these challenges, we implemented GET Controller and UNICORN, two systems that together enable event-driven process execution and monitoring. Their application is shown for a logistics scenario

    Leveraging regression algorithms for process performance predictions

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    Industry-scale context-aware processes typically manifest a large number of variants during their execution. Being able to predict the performance of a partially executed process instance (in terms of cost, time or customer satisfaction) can be particularly useful. Such predictions can help in permitting interventions to improve matters for instances that appear likely to perform poorly. This paper proposes an approach for leveraging the process context, process state, and process goals to obtain such predictions
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