Auflistung nach Autor:in "Weber, Barbara"
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- KonferenzbeitragAbstractions in actor and activity modeling(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Wester-Ebbinghaus, Matthias; Moldt, DanielIn this paper we argue that actor-centered models are well suited for sociotechnical systems of systems (like enterprise and especially cross-enterprise scenarios). Results can especially be drawn from the field of multi-agent system modeling. However, existing approaches reveal a lack of possibilities for switching between different levels of abstraction. This does not only concern more or less abstract models for a given situation (model abstraction), but also to have models with actors of varying granularity, including individual as well as collective actors (actor abstraction). We present a modeling approach that addresses both these aspects. It is based on the core concepts of actors and activities and especially the concept of a collective actor is emphasized. For supporting different levels of model abstraction, we present multiple modeling techniques. The semantic core of all models is based on high-level Petri nets, although this is hidden for the more abstract models.
- KonferenzbeitragAn agile approach to workflow management(Modellierung 2004, 2004) Weber, Barbara; Wild, WernerIn today's dynamic and uncertain business environment workflow management systems must react quickly to change. This paper suggests extending workflow management with case-based reasoning (CBR) to allow just-in-time updates to the predefined workflow model and to provide flexibility by keeping (real) options open rather than freezing them early on. First an initial workflow model is created, covering only the economically justifiable details of a business process. The decision how to model a business process precisely is delayed until the company's needs are more clearly understood and business value can be achieved. When changes become necessary during run-time, the predefined workflow model is extended with additional knowledge in the form of cases. This feedback supports continuous process improvement, resulting in more manageable and more efficient business processes over time. When the knowledge encoded in cases becomes frequently reused, it is refactored into rules and therefore explicitly included in the workflow model.
- KonferenzbeitragApplying soft systems methodology in enterprise architecture creation workshops(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Nakakawa, Agnes; Bommel, Patrick van; Proper, ErikLack of effective involvement of stakeholders is one of the main drawbacks of enterprise architecture initiatives. Ongoing attempts to overcome this involve using Collaboration Engineering to develop a collaboration process that enterprise architects can execute to facilitate collaborative sessions with stakeholders during architecture creation. However, a field study evaluation of this process revealed that it offered inadequate support for stirring vigorous and rigorous discussions during activities that required organizing and assessing problem or solution aspects that resulted from brainstorming activities. Since Soft Systems Methodology (SSM) helps to structure rational thinking about messy situations, its techniques can be adapted to supplement the design of the collaboration process with support for triggering discussions and creating a shared understanding and vision among stakeholders. This paper therefore presents a script that shows how this can be done, and discusses its evaluation in a real case.
- KonferenzbeitragAssessing process models with cognitive psychology(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Zugal, Stefan; Pinggera, Jakob; Weber, BarbaraThe importance of a business process model to be understandable to its reader is widely acknowledged. In this vein, several approaches to assess and improve understandability exist, such as theoretical quality frameworks, modeling guidelines and process model metrics. In this paper we propose to investigate the issue of understandability from the angle of cognitive psychology. To this end, we discuss how the cognitive process of inference acts as a central process of problem solving. In particular, we illustrate in how far chunking, computational offloading and external memory might have an impact on the understandability of process models. Our propositions are theory-based so far and will serve as basis for planned empirical investigations, as discussed in the research agenda.
- KonferenzbeitragCollaborative business process modeling(EMISA 2012 – Der Mensch im Zentrum der Modellierung, 2012) Forster, Simon; Pinggera, Jakob; Weber, BarbaraResearch on quality issues of business process models has recently begun to explore the process of creating process models. With growing complexity, the creation of business process models requires the presence of several, potentially spatially distributed, stakeholders. As a consequence, the question arises how this affects the process of process modeling. In this paper, we present an extension to Cheetah Ex- perimental Platform, specifically designed for investigating how process models are collaboratively created. Furthermore, we illustrate how various levels of interactions are supported by our modeling editor and outline its usage for analyzing the process of collaboratively creating process models. We believe that this extension is a first step toward understanding the process of process modeling in a collaborative setting which will ultimately help us to develop better process modeling environments.
- KonferenzbeitragCreative personality and business process redesign(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Figl, Kathrin; Weber, BarbaraThe purpose of this article is to discuss the influence of creative personality on process redesign. Building on creativity theories stemming from the field of cognitive psychology, we identify important individual factors during process redesign, and hypothesize their contributions to creative process design using a modelling tool. We present an integrated research model and illustrate how we seek to test the model using the Cheetah Experimental Platform.
- KonferenzbeitragDesigning a risk-based partner selection process for collaborative cloud computing environments(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Martens, Benedikt; Zarvic, Novica; Teuteberg, Frank; Thomas, OliverCloud Computing represents a shift in technology and IT (information technology) service management and it opens up possibilities to build new organizational configurations. As in IT outsourcing, the selection of the right partner/vendor is of crucial importance. Thus, in this article we present a partner selection process for four Cloud Computing Environments: public cloud, community cloud, cloud chain and industrial cloud. We included data sensitivity and the risk attitude of the decision maker as major decision factors for partner selection. The constructed IT artifact (i.e. partner selection process) is evaluated by means of a conceptual evaluation (expert interviews) that demonstrates the applicability of the selection process.
- ZeitschriftenartikelDetection and Quantification of Flow Consistency in Business Process Models.(EMISA Forum: Vol. 37, No. 1, 2017) Burattin, Andrea; Bernstein, Vered; Neurauter, Manuel; Soffer, Pnina; Weber, Barbara
- KonferenzbeitragDeveloping a cloud provider selection model(Enterprise modelling and information systems architectures (EMISA 2011), 2011) Repschläger, Jonas; Wind, Stefan; Zarnekow, Rüdiger; Turowski, KlausRecently, a growing development and use of Cloud computing services has been observed. Especially modeling cross-organizational cooperation and the respective provider comparison are gaining importance. Despite initial positive results, it is challenging in theory and practice to find an appropriate provider matching the individual requirements. Moreover, the comparison process is complicated by a number of new entrants as well as offers of non-transparent services, which sometimes differ significantly. Due to the lack of adequate possibilities to compare and classify Cloud providers we are presenting in this paper a provider independent classification model for Infrastructure as a Service (IaaS). For this purpose, the target dimensions for Cloud Computing from a customer perspective were defined, based on expert interviews, an international literature review and a Cloud provider market (IaaS and hosting) analysis.
- KonferenzbeitragEnriched service descriptions using business process configurations(Enterprise modelling and information systems architectures (EMISA 2011), 2011) AbuJarour, Mohammed; Awad, AhmedService descriptions play a crucial role in Service-oriented Computing (SOC), e.g., for service discovery, service selection, service composition, etc. However, it has been observed that service providers – the main source of service descriptions - typically release poor service descriptions, i.e., mostly technical-oriented descriptions. Several approaches have been proposed to tackle this problem by enriching poor service descriptions with additional information from other sources, e.g., communities or domain experts. In this work, we propose a novel approach to generate additional information about web services based on the configurations of their consuming business processes. For instance, we can extract annotations and context information for web services based on the configurations of their consuming business processes. In this paper, we introduce our proposed approach and its architecture based on the open-source online modeling platform Oryx and our public service registry Depot.