Browsing by Author "Joosten, S."

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Using ampersand in IT architecture.
Tarenskeen, D. ; Bakker, R.R. ; Joosten, S.
2020, Article in monograph or in proceedings (7th International Conference on Research and Practical Issues of Enterprise Information Systems, pp. 206-214)
Applying the V Model and Axiomatic design
Tarenskeen, D. ; Bakker, R.R. ; Joosten, S.
2015, Article / Letter to editor (Elsevier, vol. 34, (2015), pp. 263-268)Abstract This paper applies and discusses the principles of Axiomatic Design for changing IT architecture in health care. It presents three case studies positioned in the field of Enterprise architecture that explore how IT architects, as professionals, manage change and re-design the structure of the IT systems in line with strategic goals. The research approach was to use a light modelling tool, Ampersand, for modelling the Enterprise architecture. Two types of models stand out: Type 1 Strategic IT models in which higher strategic goals are related to requirements for applications and Type 2 Technical management of systems models in which technical risks and risk of system failure in the current IT infrastructure were modelled. To bridge the views of different IT experts in the organization this work uses the customer domain, the functional domain and the physical domain from Axiomatic Design in an extended example in the paper. The V Model is used to bridge the models, and then it is extended with Axiomatic Design principles. Example of model of type 1 Strategic IT Example of model of type 1 Strategic IT … . Context in different case studies. . Context in different case studies. … V Model for overview of IT Architecture. V Model for overview of IT Architecture. … Figures - uploaded by René Ronald BakkerAuthor content Content may be subject to copyright.
Using ampersand in IT architecture.
Bakker, R.R. ; Tarenskeen, D. ; Joosten, S.
2013, Article in monograph or in proceedings (Paper presented at the 7th International Conference on Research and Practical Issues of Enterprise Information Systems CONFENIS)IT architects in practice have a difficult task in extending and adapting enterprise information systems. Mastering complexity is a priority. This is still more art than craftsmanship in spite of many years of academic research in IT architecture. We will explore by a series of case studies how to support IT architects in practice, with their work of improving the consistency and completeness of emerging architectures. In this process, IT architects should be capable of discussing conflicting, incomplete, highly abstract, or overly detailed requirements with stakeholders and developers, while keeping an overview of all priorities and constraints. In this research paper, we first discuss the research strategy, Design research combined with case study research, to address this question. Next, we discuss Ampersand and its tool, a rule-based modeling language, and an engine developed in high-level IT consultancy. Ampersand seems promising for flexible modeling of IT architecture, and its rule engine can help IT architects manage consistency between requirements and IT solutions. An empirical exploration in developing the IT architecture for a new specialized child oncology hospital is used to check the premises of our research and the usefulness of Ampersand in this context. The conclusions of this exploration have led to hypotheses for testing in further research. The hypotheses concern applying the Ampersand approach to effectively support IT architects’ work.

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Browsing by Author "Joosten, S."

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