http://dl.gi.de/handle/20.500.12116/3469 2026-07-22T22:08:21Z http://dl.gi.de/handle/20.500.12116/3517 Supporting Distributed Conceptual Modelling through Naming Conventions - A Tool-based Linguistic Approach Delfmann, Patrick; Herwig, Sebastian; Lis, Łukasz; Stein, Armin Empirical studies attest that conceptual models created in distributed modelling environments often vary heavily in the way their respective model elements are labelled. Although the same issues are being modelled, different names are chosen by the involved persons. By this, the analysis and comparison of the models, which is required for their subsequent integration, is extremely challenging and time consuming. Literature analysis reveals several approaches addressing this problem by either manually or semi-automatically integrating existing models after their construction. However, this proves to be an exhaustive and error prone task. In this article we propose a domain and modelling language independent approach that prevents the emergence of naming conflicts already during the modelling process. This is done by formalising naming conventions consisting of context specific thesauri and customised phrase structures, which are both derived from natural language grammars and supplemented by domain-specific terms. These conventions serve as basis for a fully automated guidance of the modeller during the model creation process, resulting in semantically comparable conceptual models. For this, we present a research prototype that integrates our approach into a modelling tool. 2009-01-01T00:00:00Z http://dl.gi.de/handle/20.500.12116/3514 Model-Based Decision Support for the Customer-Specific Configuration of Value Bundles Becker, Jörg; Beverungen, Daniel; Knackstedt, Ralf; Müller, Oliver Customers in B2B as well as B2C markets increasingly demand integrated problem solutions from their suppliers, comprising both physical artefacts (products) and services. Applying a mixed bundling strategy to offer such value bundles to customers foremost requires a sound configuration and economic calculation of value propositions, based on previously defined modules of products and services. In this paper, a modelling language is introduced to describe the function and structure of such modules, as well as to calculate the economic consequences of value propositions on a customer-individual level. The proposed modelling language has been embedded into a software tool to evaluate its utility regarding the customization and offering of integrated value bundles to customers. 2009-01-01T00:00:00Z http://dl.gi.de/handle/20.500.12116/3515 Service Oriented Security Architecture Opincaru, Cristian; Gheorghe, Gabriela As Service Oriented Architectures (SOA) and Web services are becoming widely deployed, the issue of security is far from being solved. In an attempt to address this issue, the industry proposed several extensions to the SOAP protocol that currently reached different levels of standardization. However, no architectural guidelines have yet been proposed. In this paper we first outline the security challenges and the specifications that address these challenges and then present our concept the Service Oriented Security Architecture—SOSA. We argue that the different security functions (authentication, authorization, audit, etc.) should be realized as different stand-alone Web services These security services can then be chained together by means of Enterprise Application Integration (EAI) techniques such as message routing on Enterprise Services Buses (ESB). Next, we will present a prototypical implementation of this framework and describe our experiences so far. We show that by distributing the security functions, a more flexible architecture can be designed that would lower the costs associated with implementation, administration and maintenance. 2009-01-01T00:00:00Z http://dl.gi.de/handle/20.500.12116/3516 Editorial Frank, Ulrich 2009-01-01T00:00:00Z