P129 - SIGSAND-EUROPE 2008: Proceedings of the Third AIS SIGSAND European Symposium on Analysis, Design, Use and Societal Impact of Information Systems
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- KonferenzbeitragAdvanced 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 derConceptual 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.
- KonferenzbeitragAmbient 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, DirkInformation 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.
- KonferenzbeitragBoundary 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, AybükeValue-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.
- KonferenzbeitragCapturing 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.
- KonferenzbeitragDesign of Fractal-Based Systems within MDA: Platform Independent Modelling(SIGSAND-EUROPE 2008: Proceedings of the Third AIS SIGSAND European Symposium on Analysis, Design, Use and Societal Impact of Information Systems, 2008) Asnina, Erika; Osis, Janis; Kirikova, MariteToday’s businesses must continuously adapt to changing external environment in accelerated time frames. This requires businesses to decrease costs and time of the very process of change. Therefore, the potentials of changes in software caused by changes in businesses must be addressed during the software modelling. This can be accomplished with a fractal-based architecture. The main properties of fractal-based systems are self-similarity, self-organization, goal- orientation, dynamics, and vitality. This paper discusses how fractal-based nature of the system can be analyzed and modelled in the context of the object-oriented paradigm from the platform-independent viewpoint proposed by Model Driven Architecture (MDA). The main objective of MDA is to make software designs easily portable between different operating platforms, keeping interoperability of the software and reusability of the designs. The suggested approach helps in discovering behavioural and structural scale invariants of fractal-based systems. All scale invariants that must be implemented in fractals are separated in distinct fractal interfaces and fractal classes.
- KonferenzbeitragThe Impact of Activity Labeling Styles on Process Model Quality(SIGSAND-EUROPE 2008: Proceedings of the Third AIS SIGSAND European Symposium on Analysis, Design, Use and Societal Impact of Information Systems, 2008) Mendling, Jan; Reijers, HajoQuality issues and their connection with structural aspects of process models have been recently studied, but there is still a notable lack of research into quality aspects of activity labels in business process models. In this paper, we investigate whether the guideline to use verb-object labels actually contributes to improved model quality in terms of less ambiguity and higher usefulness. In an explorative analysis of the activity labels in the SAP Reference Model we identify three labeling styles that differ in the degree of ambiguity they bring about. Based on these styles we design a survey to test the hypothetical connection between labeling style and quality. The results suggest that indeed the verb-object style is superior to other ways of constructing labels. Our findings are deemed to be useful for modeling practice.
- KonferenzbeitragAn investigation into the technology adoption paradox(SIGSAND-EUROPE 2008: Proceedings of the Third AIS SIGSAND European Symposium on Analysis, Design, Use and Societal Impact of Information Systems, 2008) Andelfinger, Urs
- KonferenzbeitragMeBIT – an interdisciplinary project on "information" metaphors and their impact on the idea of man(SIGSAND-EUROPE 2008: Proceedings of the Third AIS SIGSAND European Symposium on Analysis, Design, Use and Societal Impact of Information Systems, 2008) Bölker, Michael; Engel, Thomas; Gutmann, Mathias; Henckel, Ulrike; Hesse, Wolfgang; Müller, Dirk; Rathgeber, Benjamin; Russ, Aaron; Syed, TareqMebIT is an interdisciplinary project granted by the German Ministry for Education and Research (BMBF). Its focus of research concerns the logical interconnections and relationships which combine the Informatics, Information Technology (IT) and Information Systems (IS) fields with other scientific branches – in particular biology/genetics and philosophy – and which are established through the extensive use of metaphors form these fields (like information, programming, code, replication, etc.). The technical endowment of almost all public domains by IT and IS might be accompanied by a mental shift – triggered and promoted by metaphoric language and might ultimately lead to the formation on new images of man. Our research group is composed of four subgroups, dealing with these questions from an information-theoretical, genetic, anthropological and technique-philosophical point of view. Some preliminary results of the joint work of these groups are demonstrated by three interconnected posters.
- KonferenzbeitragModelling Complex Events with Event-Driven Process Chains(SIGSAND-EUROPE 2008: Proceedings of the Third AIS SIGSAND European Symposium on Analysis, Design, Use and Societal Impact of Information Systems, 2008) Rommelspacher, JonasThe emerging technology complex event processing can be utilized to integrate complex events into business processes and to flexibly adjust processes on changing business requirements. Due to the complexity of events to be modelled, a high interaction level between users and developers is required. The lack of appropriate approaches for modelling complex events with the common conceptual modelling languages hampers this interaction. Here an approach for modelling complex events in business processes using event diagrams and event-driven process chains is proposed.
- KonferenzbeitragOOLH: A formal framework for specifying system requirements(SIGSAND-EUROPE 2008: Proceedings of the Third AIS SIGSAND European Symposium on Analysis, Design, Use and Societal Impact of Information Systems, 2008) Hon, Yuen Man; Gayen, Jan-Tecker; Ehrich, Hans-DieterMost of the system requirements are written in natural language. It is not easy for the system development team to understand this document unambiguously without domain specific knowledge. It is difficult to check the correctness of these requirements. A formal framework called Object Oriented Lastenheft (German for re- quirements specification) (OOLH) is proposed as a solution to handle these problems 1. This framework provides well-defined mathematical concepts to formulate system requirements. These well-formalized system requirements can be analyzed and understood easier and their consistency can be checked based on the mathematical concepts. A tool, called OOLH tool, is implemented to support analyzing, verifying and checking consistency of formulas in OOLH. Logical formulas can be transformed into decision tables and truth tables. The expected behavior or a design can be specified in decision tables in this tool, such that the correctness of requirements can be verified.