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P152 - EMISA 2009 - Enterprise Modelling and Information Systems Architectures

https://dl.gi.de/handle/20.500.12116/23197
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Auflistung P152 - EMISA 2009 - Enterprise Modelling and Information Systems Architectures nach Erscheinungsdatum

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  • Konferenzbeitrag
    Evaluating enterprise architecture management initiatives - How to measure and control the degree of standardization of an IT landscape
    (Enterprise modelling and information systems architectures, 2009) Brückmann, Matthias; Schöne, Klaus-Manfred; Junginger, Stefan; Boudinova, Diana
    An important objective of nearly all EAM initiatives is the standardization and consolidation of the IT landscape. This can be seen on several levels, e.g. on the application landscape level, the software level, the hardware level, etc. This paper presents a stepwise approach for consolidating IT landscapes on the technology, software and hardware level which considers the specifics of large IT organizations and is implemented in one of the largest IT service providers of Germany's public civil administration. It is based on metrics which use concepts from fuzzy logic. In particular, these metrics allow measuring the degree of standardization of parts of as well as of the overall IT landscape.
  • Konferenzbeitrag
    Integrating system dynamics with object-role modeling and Petri nets
    (Enterprise modelling and information systems architectures, 2009) Tulinayo, Fiona; Hoppenbrouwers, Stijn; Bommel, Patrick van; Proper, Erik
    The art of System Dynamics (SD) modeling lies in discovering and representing the feedback processes and other elements that determine the dynamics of a system. However, SD shows a lack of means for discovering and expressing precise, language-based concepts in domains. Therefore, we choose to use Object-Role Modeling (ORM) to add high quality formal conceptualization to SD modeling and Petri Nets (PNs) to bridge the gap between static ORM and Dynamic, flow-like aspects of SD. To achieve the integration of these methods, we take a step by step approach where we first identify the conceptual link between SD and ORM, then the key concepts used in these methods, which we later use to derive mappings, transition statements and elements. This helps us to better understand the underlying concepts, the connections between the model structure, and behavior in a sequential manner.
  • Konferenzbeitrag
    Controlled flexibility and lifecycle management of business processes through extensibility
    (Enterprise modelling and information systems architectures, 2009) Balko, Sören; Hofstede, Arthur H. M. ter; Barros, Alistair; Rosa, Marcello La; Adams, Michael
    Vendors provide reference process models as consolidated, off-the-shelf solutions to capture best practices in a given industry domain. Customers can then adapt these models to suit their specific requirements. Traditional process flexibility approaches facilitate this operation, but do not fully address it as they do not sufficiently take controlled change guided by vendors' reference models into account. This tension between the customer's freedom of adapting reference models, and the ability to incorporate with relatively low effort vendorinitiated reference model changes, thus needs to be carefully balanced. This paper introduces process extensibility as a new paradigm for customizing reference pro- cesses and managing their evolution over time. Process extensibility mandates a clear recognition of the different responsibilities and interests of reference model vendors and consumers, and is concerned with keeping the effort of customer- side reference model adaptations low while allowing sufficient room for model change.
  • Konferenzbeitrag
    A survival analysis of application life spans based on enterprise architecture models
    (Enterprise modelling and information systems architectures, 2009) Aier, Stephan; Buckl, Sabine; Franke, Ulrik; Gleichauf, Bettina; Johnson, Pontus; Närman, Per; Schweda, Christian M.; Ullberg, Johan
    Modern enterprises face the challenge to survive in an ever changing environment. One commonly accepted means to address this challenge and further enhance survivability is enterprise architecture (EA) management, which provides a holistic model-based approach to business/IT alignment. Thereby, the decisions taken in the context of EA management are based on accurate documentation of IT systems and business processes. The maintenance of such documentation causes high investments for enterprises, especially in the absence of information on the change rates of different systems and processes. In this paper we propose a method for gathering and analyzing such information. The method is used to analyze the life spans of the application portfolio of three companies from different industry sectors. Based on the results of the three case studies implications and limitations of the method are discussed.
  • Konferenzbeitrag
    Access control for monitoring system-spanning business processes in proviado
    (Enterprise modelling and information systems architectures, 2009) Bassil, Sarita; Reichert, Manfred; Bobrik, Ralph; Bauer, Thomas
    Integrated 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.
  • Konferenzbeitrag
    Application landscape metrics: overview, classification, and practical usage
    (Enterprise modelling and information systems architectures, 2009) Addicks, Jan Stefan; Gringel, Philipp
    Due 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.
  • Konferenzbeitrag
    Process flexibility: A design view and specification schema
    (Enterprise modelling and information systems architectures, 2009) Kannengiesser, Udo
    This paper proposes a framework of process flexibility based on a view of processes as design objects. It is represented using the function-behaviourstructure (FBS) ontology of designing. The paper shows how the FBS ontology allows extending and generalising recent work on flexibility in engineering design, and how it allows applying this work to processes. The resulting framework provides a comprehensive account of process flexibility that subsumes existing approaches. Finally, the paper presents a specification schema for process flexibility, illustrated using examples of a property valuation process in the Australian lending industry.
  • Editiertes Buch
  • Konferenzbeitrag
    How do system and enterprise architectures influence knowledge management in software projects? - An explorative study of six software projects
    (Enterprise modelling and information systems architectures, 2009) Lucke, Carsten; May, Markus; Kratzke, Nane; Lechner, Ulrike
    This paper covers the influence of systemand enterprise architectures on knowledge management in software development projects. The common impact of architectures is researched in the context of six case studies of medium and large sized softwareand system development as well as technical and organizational consultancy companies in the military and non-military domain. Observations are collected in a wide variety of aspects and evaluated on the basis of the Probst et al. knowledge management model [PRR06].
  • Konferenzbeitrag
    A thing called "fluid process" - beyond rigidity in business process support
    (Enterprise modelling and information systems architectures, 2009) Reichert, Manfred
    This keynote reports on a new class of processes - so called fluid processes - whose "engineering" and "use" is indistinguishable. Fluid processes are continually being adapted and reformed to fit the actual needs and constraints of the situation in hand and to fulfill the overall goals of the involved actors in the best possible way. We present a detailed review of challenges and techniques that exist for the support of fluid processes. We give insights into their nature, discuss fundamental challenges to be tackled, summarize basic technologies enabling fluid processes at the information system level, and describe advanced applications of fluid processes.