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Smit, P.B. (author), Janssen, T.T. (author)Wave fields traveling through a varying medium (e.g. topography, currents), can develop well-defined focal zones and caustics, where the wave field is highly coherent and wave statistics vary rapidly. However, the presence and evolution of such coherent structures in the wave field are not resolved in a quasi-homogeneous description of the wave...conference paper 2011
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- Dirksen, P. (author), Braat, J.J.M. (author), Janssen, A.J.E.M. (author), Leeuwesteijn, A. (author) conference paper 2005
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- Cresswell, A. (author), Janssen, M.F.W.H.A. (author) conference paper 2004
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Janssen, M.F.W.H.A. (author), Kuk, G. (author)Within the public sector, the deployment of enterprise architecture is often an attempt to address the decentralization/centralization relationships to improve the links between the central and the local governments. The underlying aim is to provide a better structure to manage the diverse, independent and local IT-related projects and...conference paper 2006
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Klievink, B. (author), Janssen, M.F.W.H.A. (author)Governments aim to improve service delivery to citizens and businesses and need to transform to accomplish efficiency savings and better customer orientation. This requires the coordination of dependencies among the various departments located in the frontend and backend of organizations, and might include interdependencies with external parties...conference paper 2010
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Bharosa, N. (author), Janssen, M.F.W.H.A. (author)When disaster strikes, the emerging task environment requires relief agencies to transform from autonomous mono-disciplinary organizations into interdependent multidisciplinary decision-making units. Evaluation studies reveal that adaptation of information management to the changing task environment is difficult resulting in poor information...conference paper 2009
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Van Haver, S. (author), Janssen, O.T.A. (author), Braat, J.J.M. (author), Janssen, A.J.E.M. (author), Urbach, H.P. (author), Pereira, S.F. (author)In this paper we introduce a new mask imaging algorithm that is based on the source point integration method (or Abbe method). The method presented here distinguishes itself from existing methods by exploiting the through-focus imaging feature of the Extended Nijboer-Zernike (ENZ) theory of diffraction. An introduction to ENZ-theory and its...conference paper 2008
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Bharosa, N. (author), Janssen, M.F.W.H.A. (author)During crises, relief agency commanders have to make decisions in a complex and uncertain environment, requiring them to continuously adapt to unforeseen environmental changes. In the process of adaptation, the commanders depend on information management systems for information. Yet there are still numerous reports of situations in which...conference paper 2010
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Kuiper, E. (author), Van Dam, F. (author), Reiter, A. (author), Janssen, M.F.W.H.A. (author)Cloud adoption in the public sector is taking off slowly, which is perceived as a problem. Models of factors influencing cloud adoption are derived for better understanding using literature and results obtained via desk research and surveys by the Cloud for Europe project. We conclude that several factors require further research, such as the...conference paper 2014
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Smit, P.B. (author), Janssen, T.T. (author), Herbers, T.H.C. (author)Refraction of narrow-band surface waves in coastal areas can result in wave-focal zones where due to interference, wave statistics vary rapidly and on similar length scales as those of individual waves. However such interference patterns, or wave coherence, are not accounted for in conventional stochastic wave models that are based on the energy...conference paper 2012
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Grünewald, S. (author), Janssen, B. (author), Schipper, H.R. (author), Vollers, K.J. (author), Walraven, J.C. (author)This paper discusses the effect of intentional deformation of a flexible formwork after casting of the concrete and the influence of the characteristics of concrete in the fresh state on the quality of a concrete element. This deformation is intended to bring the concrete element in its desired final shape; the deformation typically takes place...conference paper 2012
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Wimmer, M. (author), Codagnone, C. (author), Janssen, M.F.W.H.A. (author)E-government research has become a recognized research domain and many policies and strategies are formulated for e-government implementations. Most of these target the next few years and limited attention has been giving to the long term. The eGovRTD2020, a European Commission co-funded project, investigated the future research on e-government...conference paper 2008
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- Dijkstra, O.D. (author), Janssen, G.T.M. (author), Ludolphy, J.W.L. (author) conference paper 2001
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Schipper, H.R. (author), Janssen, B. (author)The manufacturing of double-curved precast concrete elements is still expensive, due to the high costs and limited possibilities for repetitive use of the moulds or formwork. The goal of the research described in this paper is to develop a production method that overcomes these difficulties by enabling the mould to be reused many times and by...conference paper 2011
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Janssen, P. (author), Stouffs, R.M.F. (author), Chaszar, A.T. (author), Boeykens, S. (author), Toth, B. (author)This paper describes the use of property graphs for mapping data between AEC software tools, which are not linked by common data formats and/or other interoperability measures. The intention of introducing this in practice, education and research is to facilitate the use of diverse, non-integrated design and analysis applications by a variety of...conference paper 2012
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Boella, G. (author), Hulstijn, J. (author), Humphreys, L. (author), Janssen, M.F.W.H.A. (author), Van der Torre, L. (author)Maintaining regulatory compliance is an increasing concern. Legal Knowledge Management systems could support the work of compliance managers. However, there are challenges to overcome, of interpreting legal knowledge and mapping it onto business processes. In this discussion paper we determine requirements for Legal Knowledge Management systems...conference paper 2012
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Van Stijn, E.J. (author), Klievink, A.J. (author), Janssen, M.F.W.H.A. (author), Tan, Y. (author)Government agencies and businesses cooperate and invest heavily to achieve reliable and secure global supply networks. A so-called data pipeline, which integrates data from various parties in the supply chain and incorporates data from new tracking and monitoring technologies, would enable real-time data management for businesses. This IT...conference paper 2012
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Singerling, T. (author), Klievink, A.J. (author), De Reuver, G.A. (author), Janssen, M.F.W.H.A. (author)Organizations do not just decide on whether or not to exchange information digitally. In many cases, there are multiple alternative configurations of inter-organizational systems (IOS) that facilitate such information sharing. Although a lot is known about the factors that influence whether organizations do or do not adopt IOS, little is known...conference paper 2015
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Schipper, H.R. (author), Janssen, B. (author)Free form architecture with complex geometry brings along new challenges for manufacturers of building components. This paper describes the application of structural mechanics to predict the behaviour of an elastic mould surface, used as formwork for the manufacturing of double curved panels in precast concrete. Results are presented of...conference paper 2011
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Janssen, P. (author), Stouffs, R.M.F. (author)This paper investigates the state-of-the-art with respect to simulation-based planning support systems in order to draw a set of requirements and best practices for an urban planning and design framework that enables multiple stakeholders with differing perspectives to systematically explore design options, leveraging the latest analysis and...conference paper 2014