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- Konferenzbeitrag40 Years EMISA - Komplettband(40 Years EMISA 2019, 2020)
- 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.
- KonferenzbeitragAccess control for monitoring system-spanning business processes in proviado(Enterprise modelling and information systems architectures, 2009) Bassil, Sarita; Reichert, Manfred; Bobrik, Ralph; Bauer, ThomasIntegrated process support is highly desirable in environments where data related to a particular (business) process are scattered over distributed, heterogeneous information systems (IS). A process monitoring component is a much-needed module in order to provide an integrated view on all these process data. Regarding process data integration, access control (AC) issues are very important but also quite complex to be addressed. A major problem arises from the fact that the involved IS are usually based on heterogeneous AC components. For several reasons, the only feasible way to tackle the problem of AC at the process monitoring level is to define access rights for the process monitoring component, hence getting rid of the burden to map access rights from the IS level. This paper discusses requirements for AC in process monitoring, which we derived from our case studies in the automotive domain. It then presents alternative approaches for AC: the view-based and the object-based approach. The latter is retained, and a core AC model is proposed for the definition of access rights that meet the derived requirements. AC mechanisms provided within the core model are key ingredients for the definition of model extensions.
- TextdokumentAddressing the Log Representativeness Problem using Species Discovery (Extended Abstract)(EMISA 2024, 2024) Kabierski, Martin; Richter, Markus; Weidlich, MatthiasEvent logs are generated during the enactment of process-centric information systems and form the basis for optimization, monitoring, and enhancement initiatives of said systems. As such, they enable a data-driven and unbiased evaluation of the as-is state of the underlying processes. Yet, since at any time, event logs represent merely a sample of the whole possible behaviour of the information system, insights are only actionable should the event log be representative of the information system from which it is derived. Therefore, the question arises of how the representativeness of an event log$L with respect to its generative system P can be quantified, given that only L is present. In this work, we argue, that representativeness of an event log needs to be assessed with an intended analysis question in mind and discuss log completeness as one important facet of representativeness. We show how established estimators from biodiversity research can be utilized to quantify log completeness.
- KonferenzbeitragAnalyzing the SOA ability of standard software packages with a dedicated architecture maturity framework(EMISA 2010. Einflussfaktoren auf die Entwicklung flexibler, integrierter Informationssysteme. Beiträge des Workshops der GI-Fachgruppe EMISA (Entwicklungsmethoden für Informationssysteme und deren Anwendung), 2010) Buckow, Helge; Groß, Hans-Jürgen; Piller, Gunther; Prott, Karl; Willkomm, Johannes; Zimmermann, AlfredThe SOA Innovation Lab investigates the use of standard software packages in a service-oriented context. As a part of this investigation the SOA capabilities of products from different vendors need to be evaluated. For this purpose a SOA architecture maturity framework has been developed, leveraging and extending CMMI and TOGAF, as well as other state-of-the art frameworks and methods. Besides details about our framework, we present and analyze first results from the assessment of various vendor platforms.
- KonferenzbeitragApplication Engineering Research at Universität Klagenfurt(40 Years EMISA 2019, 2020) Mayr, Heinrich C.; Paczona, Martin; Shekhovtsov, Vladimir A.We sketch here the general orientation (“Mission”) and the recent research projects of our research group, which is part of the Institute of Applied Informatics in the Faculty of Technical Sciences. In research and teaching, we address human centered research in (1) model engineering: user centered (requirements) modeling languages that are intuitively to understand, apply and validate, (2) design and realization of user-oriented application architectures with a strong focus on the integration of user needs into the development process, and (3) customer centered, accessible, effective and sustainable software and services.
- KonferenzbeitragApplication landscape metrics: overview, classification, and practical usage(Enterprise modelling and information systems architectures, 2009) Addicks, Jan Stefan; Gringel, PhilippDue to mergers and acquisitions as well as uncoordinated projects, application landscapes of today's organizations contain redundant applications (two or more applications that have similar functionality). To consolidate the application landscape, comparisons of applications have to be performed. Application landscape metrics are seen as an appropriate instrument for such comparisons. This contribution describes a method as well as a template to classify landscape metrics. In presenting a tool prototype, we provide a first glance of how to practically employ application landscape metrics.
- 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.
- KonferenzbeitragAn approach for the management of service-oriented architecture (SoA) based application systems(Enterprise modelling and information systems architectures, 2005) Berbner, Rainer; Grollius, Tobias; Repp, Nicolas; Heckmann, Oliver; Ortner, Erich; Steinmetz, RalfFlexible business processes are a key success factor for enterprises to succeed in globalised markets. The Service-oriented Architecture (SoA) concept is very well suited to support flexible business processes and application systems because capabilities (in form of services) can be composed in the most efficient way to achieve a high level of agility. However, the management of SoA-founded application systems is often neglected. Thus, we present an approach that enhances the traditional SoA concept by additional management functionality, e.g. monitoring mechanisms and SLA management. As a validation of our concept we introduce WSQoSX, a prototypical implementation based on Web Services.
- KonferenzbeitragAn approach to quantify the costs of business process intelligence(Enterprise modelling and information systems architectures, 2005) Mutschler, Bela; Bumiller, Johannes; Reichert, ManfredToday, enterprises are forced to continuously optimize their business as well as service processes. In this context the process-centered alignment of information systems is crucial. The use of business process intelligence (BPI) tools offers promising perspectives in this respect. However, when using BPI tools one has not only to look at potential benefits but at costs as well. Therefore, most enterprises thinking about the purchase of a BPI solution demand for a business case systematically outlining an investment's benefits and costs. This paper summarizes such a business case based on an evaluation of contemporary BPI tools and practical experiences. We present basic BPI concepts, describe BPI benefits and cost drivers and introduce two cost models to gain insights into BPI economics.