Browsing by Author "Wetering, R. van de"

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The Contribution of Conceptual Independence to IT Infrastructure Flexibility:The Case of openEHR.
Tarenskeen, D. ; Wetering, R. van de ; Bakker, R.R. ; Brinkkemper, S.
2020, Article in monograph or in proceedings (Project: Hospital’s IT infrastructure capability and digital capabilities, pp. 233-244)In the Netherlands demands on IT support in healthcare organizations are increasing. New visions on healthcare focus on patient-centered healthcare, where mutual consultation among healthcare professionals in the network becomes a standard process. Recent governmental regulations prescribe that patients must be able to access personal health records. IT flexibility is needed to allow organizations to meet new demands. In this study, we focus on Conceptual Independence (CI) be-cause CI, as a design principle, can improve the adaptability of Information Systems (IS). Software with CI operates on flexible data models that are independent of the CI based application. Therefore, it is claimed that a standalone IS becomes more flexible with CI. We extend the claim by demonstrating that CI affects the flexibility of the entire IT infrastructure. We investigate which dimensions of IT flexibility are responsible for the improvement. Multi-case study research has been performed following a mixed-methods approach in 10 mental healthcare organizations. Five have implemented openEHR, a proxy for CI, and five have not. Data has been collected with a questionnaire of IT infrastructure flexibility and semi-structured interviews. The data synthesis shows a positive effect of CI on IT flexibility, as CI increases the adaptability of IS, transparency and standardization of the IT infrastructure. Mean scores of openEHR organizations and other organizations on the questionnaire of IT infrastructure flexibility Mean scores of openEHR organizations and other organizations on the questionnaire of IT infrastructure flexibility … Reuse and modularity P2: Reuse of functionality increases Modularity of IT infrastructure Reuse and modularity P2: Reuse of functionality increases Modularity of IT infrastructure … Accessibility of data Accessibility of data … Mean Scores for Organizations on IT Infrastructure Flexibility Questionnaire Mean Scores for Organizations on IT Infrastructure Flexibility Questionnaire … Hypothesis Test Summary -Means Hypothesis Test Summary -Means … Figures - uploaded by Rogier van de WeteringAuthor content Content may be subject to copyright.
Investigating the Impact of Outsourcing on IT Flexibility:
Tarenskeen, D. ; Wetering, R. van de ; Bakker, R.R.
2020, Article in monograph or in proceedings (The Conceptual Independence Perspective. Submitted for publication.)
Unintended effects of dependencies in source code on the flexibility of IT in organizations.
Tarenskeen, D. ; Bakker, R.R. ; Wetering, R. van de
2018, Article in monograph or in proceedings (FEDERATED CONFERENCE ON COMPUTER SCIENCE AND INFORMATION SYSTEMS / In FedCSIS (ed.), Project: Hospital’s IT infrastructure capability and digital capabilities, pp. 87-94)This study links business requirements and adaptability of existing software systems. Organizations expect flexibility of IT with regard to business requirements. We hypothesize that the flexibility of business requirements is difficult in IT systems, because of software dependencies in the way domain knowledge is implemented. In this paper, we, therefore, explore how Business requirements have been implemented in the source code of three open source healthcare systems. Outcomes suggest that a tight interdependency of business terminology and functionality in source code hides business requirements from view and thereby hinders IT flexibility on higher levels. Diagram of Modeling levels of OMG Diagram of Modeling levels of OMG … Figures - uploaded by Rogier van de WeteringAuthor content All figure content in this area was uploaded by Rogier van de Wetering Content may be subject to copyright.
Reflections on Using an Architecture Model for Matching Existing Applications to a Radical Business Requirements Change: a Case Study
Tarenskeen, D. ; Hoppenbrouwers, S.J.B.A. ; Wetering, R. van de
2018, Article in monograph or in proceedings (Buchmann, R.; Karagiannis, D.; Kirikova, M. (ed.), PoEM 2018. Lecture Notes in Business Information Processing)
Reflections on Using an Architecture Model for Matching Existing Applications to a Radical Business Requirements Change
Tarenskeen, D. ; Hoppenbrouwers, S.J.B.A. ; Wetering, R. van de
2018, Article in monograph or in proceedings (a Case Study, pp. 383-393)In this practice paper, we report the outcomes of a case study in a new Dutch hospital, where enterprise architects are working toward a 'lean' and 'simplified' EA model to align existing IT systems to new requirements. The objective of the case study was to examine if the developed EA model could support architects in selecting components of an existing IT infrastructure for re-use, with regard to radically new requirements. We have developed an EA model in close collaboration with enterprise architects. This study reflects on the use of this model in the hospital. The approach combines analysis of the content in the model, a study of documents in the organization, and communication with the architects. We signal that the existence of an integrated suite for an Electronic Health Record system largely determined how the model was used. Reflection disclosed that a lack of information on requirements and applications, as well as low adaptability of existing systems, negatively affected the flexibility of IT in the organization.

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