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Auflistung nach Autor:in "Hesse, Wolfgang"

1 - 10 von 90
  • Konferenzbeitrag
    Advanced Reduction Rules for the Verification of EPC Business Process Models
    (SIGSAND-EUROPE 2008: Proceedings of the Third AIS SIGSAND European Symposium on Analysis, Design, Use and Societal Impact of Information Systems, 2008) Mendling, Jan; Aalst, Wil van der
    Conceptual business process models such as Event-driven Process Chains (EPCs) play an important role in the business process management life cycle. The pro- blem in this context is that most of today’s commercial business process management tools provide only limited support for quality assurance beyond simple syntax checks. In this paper we focus on verification of behavioral correctness as one of the major qua- lity issues for process models. To be more concise, we introduce advanced reduction rules for EPCs in order to address the requirements of performance and identificati- on of errors in practice. We present the verification tool xoEPC that implements the reduction rules. It provides detailed feedback to the modeler where errors are located in the model, and generates a report on quality issues in a process model collection. We present the application of xoEPC to the analysis of the SAP reference model to illustrate the tool.
  • Konferenzbeitrag
    An agile approach to workflow management
    (Modellierung 2004, 2004) Weber, Barbara; Wild, Werner
    In 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.
  • Konferenzbeitrag
    Ambient Information Systems – Do They Open a New Quality of IS?
    (SIGSAND-EUROPE 2008: Proceedings of the Third AIS SIGSAND European Symposium on Analysis, Design, Use and Societal Impact of Information Systems, 2008) Russ, Aaron; Hesse, Wolfgang; Müller, Dirk
    Information Systems (IS) have influenced and changed our lives in the past 50 years more than anything else – be it in the professional, be it in the private sector. Three main qualities have leveraged IS to this extraordinary position: persistence (supporting and extending human memories), individual availability and distribution – now world-wide through the internet and innumerable web- based applications and services. At the beginning 21st century, new technical prospects are opening new dimensions for IS: Due to the progressive miniaturisation of hardware components, next IS generations are mobile and pervasive, do no longer reside in computer mainframes and workstations but are clusters of “intelligence” which can be implanted almost everywhere and have thus been termed ambient or ubiquitous. In this article, we will briefly review the concept and history of IS and try to define what Ambient Information Systems (AIS) might be and which role they might play in a future Information Society. In particular, we shall deal with the phenomena of information and ambience, investigate their semiotic dimensions – and raise the question whether and how far human qualities like intelligence, intention, etc. can be attributed to impersonal, highly heterogeneous and maybe abstract systems. If we are going to embed ourselves in ambient systems, if we grant these to deal with information (instead of data) and to act intelligently, this might profoundly influence our image of man – in particular as qualities like autonomy, privacy or self-esteem are concerned.
  • Konferenzbeitrag
    Anforderungen und Bestandteile eines Referenzmodells für Mass Customization – Ein konzeptioneller Ansatz
    (Modellierung 2004, 2004) Dietrich, Andreas J.; Kirn, Stefan; Birgels, Frank
  • Konferenzbeitrag
    Anforderungsorientierte Variabilitätsmodellierung für Software-Produktfamilien
    (Modellierung 2004, 2004) Bühne, Stan; Halmans, Günter; Pohl, Klaus
    Die Entwicklung von Software-Produktfamilien hat zum Ziel, durch Ausnutzung von Variabilität unterschiedliche Produkte auf der Basis einer gemeinsamen Plattform effizient und mit hoher Qualität zu entwickeln. Variabilität ist daher ein zentrales Konzept der Software-Produktfamilien Entwicklung. Für die Realisierung und Änderung von Produkten auf der Basis einer Software-Produktfamilie ist u. a. eine für alle Entwicklungsphasen (z.B. Requirements Engineering, Architekturdesign, Implementierung) durchgängige Repräsentation der Produktfamilien-Variabilität eine wesentliche Voraussetzung. Im Rahmen des Requirements Engineerings ist es notwendig, die Repräsentation der Variabilität mit unterschiedlichen Anforderungsmodellen wie beispielsweise Zielmodellen oder Szenarien zu verknüpfen und damit die verschiedenen Sichten der Anforderungsmodellierung einfließen zu lassen. In diesem Beitrag beschreiben wir drei Arten von Anforderungsmodellen und deren Beziehungen untereinander. Im Weiteren erläutern wir, wie Produktfamilien- Variabilität in Bezug auf diese drei Arten von Anforderungsmodellen repräsentiert und die Produktdefinition durch die Beziehungen der Modelle untereinander vereinfacht werden kann.
  • Zeitschriftenartikel
    Ein Begriffsystem für die Softwaretechnik. Vorschlag zur Terminologie
    (Informatik Spektrum: Vol. 7, No. 4, 1984) Hesse, Wolfgang; Keutgen, Hans; Luft, Alfred L.; Rombach, H. Dieter
  • Konferenzbeitrag
  • Konferenzbeitrag
    Boundary Objects for Value-based Requirements Engineering
    (SIGSAND-EUROPE 2008: Proceedings of the Third AIS SIGSAND European Symposium on Analysis, Design, Use and Societal Impact of Information Systems, 2008) Paech, Barbara; Aurum, Aybüke
    Value-based requirements engineering focuses on the alignment of requirements engineering decisions and business value decisions. There is much evidence on the importance of this alignment and there are several approaches for tackling specific alignment decisions such as e.g. release planning. However, for the general picture of what this alignment is about, a common language between requirements engineering and business decision makers is needed. The goal of this paper is to make explicit the boundary objects between requirements engineering and business value decisions. These boundary objects have been derived from literature and are evaluated in three typical scenarios of how software can provide value to business: (1) the product management scenario, where software is (part of) a product sold by the company, (2) the IT procurement scenario where the software and related services are procured by the company, and (3) the IT development scenario, where software is developed in-house to be used in the IT infrastructure of the company. An empirical study of the relevance of the identified boundary objects is the most important future work.
  • Konferenzbeitrag
    Capturing the Semantics of Quality Requirements into an Intermediate Predesign Model
    (SIGSAND-EUROPE 2008: Proceedings of the Third AIS SIGSAND European Symposium on Analysis, Design, Use and Societal Impact of Information Systems, 2008) Shekhovtsov, Vladimir A.; Kop, Christian; Mayr, Heinrich C.
    We present an approach to capturing the semantics of quality requirements in an intermediate predesign step residing between quality requirements elicitation and conceptual design. We propose Quality-Aware Predesign Model (QAPM) to be used at this step. In this model, the problem domain is viewed as a set of concerns. Out of this set, concerns related to quality are separated from those related to the main functionality of the system. Quality concerns are represented by hierarchical quality models incorporating quality characteristics and indicators. The semantics of both functional and quality concerns is modeled using Klagenfurt Conceptual Predesign Model (KCPM) concepts with necessary modifications. On basis of this, QAPM offers the set of concepts to represent the semantics of cross- cutting relationships between the concerns.
  • Konferenzbeitrag
    CASE support and model-based development
    (Modellierung 2004, 2004) Schätz, Bernhard; Romberg, Jan; Slotosch, Oscar; Strecker, Martin