Needs-driven service bundling in a multi-supplier setting: The comuputational e3 service approach

Akkermans, J.M. [Promotor]Gordijn, J. [Copromotor

Social Media Users\u27 Guide

Mass Communication Professor Susan Currie Sivek shares ideas and suggestions for how to take control of social media and use it to your advantage

Enterprise Modeling Support for SOA Migration

The migration to a Service Oriented Architecture (SOA) is a complex undertaking in terms of aligning business and IT concerns as well as analysis of technical aspects, such as identifying legacy systems in need of wrapping. Conceptual modeling can be particularly helpful for supporting SOA migration in terms of (1) bridging the gap between business and IT concerns, and (2) analyzing the as-is and to-be IT infrastructures. In this paper, based on the identified requirements, we extend a language for IT infrastructure modeling, called ITML. Using an extensively documented SOA migration scenario we show how extended ITML, in tandem with other languages from the MEMO language family, can be used for SOA migration analysis. Finally, we provide a scenario-based comparison between the extended ITML and ArchiMate

THE IMPACT OF CULTURAL DIFFERENCES ON ENTERPRISE ARCHITECTURE EFFECTIVENESS: A CASE STUDY

We study how differences between organizational subcultures influence the effectiveness of the Enterprise Architecture (EA) function for steering the enterprise. In this paper, we contribute findings from a case study in a governmental organization. We derive seven propositions concerning the relation between cultural differences and EA effectiveness. For one, we suggest that cultural differences among the architects have a negative impact on the architects’ communication towards the management. In addition, our data suggest that the influence of cultural differences is indirect: communication defects and disagreement within the architecture board act as important intermediary factor

A Multilevel Model of IT Platforms for the Needs of Enterprise IT Landscape Analyses

Conceptual modeling supports analyses of IT artifacts and the enterprise action system they are embedded in. However, in this paper it is argued that for IT landscape analyses existing modeling approaches fall short due to, among others, (a) problems with accounting for specifics of the IT domain, e.g., an elaborate technical terminology with various hierarchy levels, and (b) inadequate support for automated analyses within and across those different levels. In this paper, the authors discuss how a designed multilevel model of IT platforms created using the multilevel modeling language FMMLx can help overcome these problems. To this end, limitations of IT platform models created with conventional, two-level modeling languages are shown. Furthermore, benefits resulting from the application of the selected multilevel modeling language are discussed

Matching Complex Consumer Needs with e-Service Bundles

e-Services are commercial services that can be ordered and provisioned via the Internet, satisfying a consumer need. Sometimes, such services are provisioned by a constellation of enterprises, and consist of multiple elementary services. A problem is then how to configure such a constellation, satisfying a complex consumer need. To this end, we extend the notion of consumer need in the e3value methodology, as originally intended for designing value constellations. We also show how needs can be (automatically) matched with services provisioned by suppliers. As such, our contribution can be seen as a first step towards on-demand dynamic value constellations, provisioning e-services

Towards Cybersecurity by Design: A multi-level reference model for requirements-driven smart grid cybersecurity

This paper provides a first step towards a reference model for end-to-end cybersecurity by design in the electricity sector. The envisioned reference model relies, among others, on the integrated consideration of two currently fragmented, but complementary, reference models: NISTIR 7628 and powerLang. As an underlying language architecture of choice, we rely on multi-level modeling, specifically on the Flexible Meta Modeling and Execution Language (FMMLx), as multi-level modeling supports a natural integration across different abstraction levels inherent to reference models. This paper’s contributions are a result of one full consideration of Wieringa’s engineering cycle: for problem investigation, we describe the problems the reference model should address; for treatment design, we contribute the requirements the reference model should fulfill; for treatment implementation, we provide reference model’s fragments implemented in an integrated modeling and programming environment. Finally, for treatment evaluation, we perform expert interviews to check, among others, the artefact’s relevance and utility