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Janssen, M. (author), Klischewski, R. (author), Demirkan, H. (author)
conference paper 2007
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Janssen, M.F.W.H.A. (author), Hjort-Madsen, K. (author)
National enterprise architectures (NEA) promise to fill the gap between policy and implementation. NEAs are embedded within an institutional environment consisting of active players capable of responding strategically and innovatively to architectural initiatives, which might complicate NEA adoption. In this paper we analyze the efforts of two...
conference paper 2007
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Janssen, M.F.W.H.A. (author), Van der Duin, P. (author), Wagenaar, R.W. (author), Bicking, M. (author), Wimmer, M.A. (author), Dawes, S. (author), Petrauskas, R. (author)
E-government research is currently at a stage of consolidation and new orientation. Smaller steps of government modernization have in part been successfully implemented; larger ones still lie ahead of us. Within an EC funded project, a roadmap for egovernment is being defined. Thereby, scenario building about the future is being used to grasp...
conference paper 2007
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Dirksen, P. (author), Braat, J.J.M. (author), Janssen, A.J.E.M. (author), Leeuwestein, A. (author), Matsuyama, T. (author), Noda, T. (author)
Phase Measurement Interferometers (PMI) are widely used during the manufacturing process of high quality lenses. Although they have an excellent reproducibility and sensitivity, the set-up is expensive and the accuracy of the measurement needs to be checked frequently. This paper discusses an alternative lens metrology method that is based on an...
conference paper 2006
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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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Janssen, M.F.W.H.A. (author), Holden, S.H. (author), Maxwell, T.A. (author)
conference paper 2006
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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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Janssen, M.F.W.H.A. (author), Cresswell, A. (author)
Traditionally, government agencies are organized vertically around departments. Many local government agencies are looking for ways to develop an integrated architecture. Many architectural methods are available, however, they remain often abstract, provide limited support for the translation of the concepts to a concrete situation, and have...
conference paper 2005
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Janssen, M.F.W.H.A. (author), Cresswell, A. (author)
Achieving goals of better integrated and responsive government services requires moving away from stand alone applications toward more comprehensive, integrated architectures. As a result there is mounting pressure to move from disparate systems operating in parallel toward a shared architecture designed to support information exchange and cross...
conference paper 2005
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Janssen, M.F.W.H.A. (author), Krimmer, R. (author), Maxwell, T.A. (author)
conference paper 2005
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Dirksen, P. (author), Braat, J. (author), Janssen, A.J.E.M. (author), Leeuwestein, A. (author), Kwinten, H. (author), Van Steenwinckel, D. (author)
This study presents an experimental method to determine the resist parameters that are at the origin of a general blurring of the projected aerial image. The resist model includes the effects of diffusion in the horizontal plane and a second cause for image blur that originates from a stochastic variation of the focus parameter. The used...
conference paper 2004
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Janssen, M.F.W.H.A. (author), Wagenaar, R. (author)
Information systems engineering projects in egovernment are confronted with high costs, lack of expertise and developing similar functionality over and over. A shared services centre might provide common services to local government organizations without affecting the autonomy of organizations and providing the flexibility to enhance and include...
conference paper 2004
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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), Wagenaar, R. (author), Beerens, J. (author)
The planning and subsequent nationwide implementation of E-government service provisioning faces a number of challenges at the level of municipalities in the Netherlands. Initiatives are confronted with a highly fragmented ICT-architecture that has been vertically organized around departments and with hardly any common horizontal functionality....
conference paper 2003
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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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van Beek, T. (author), Janssen, A. (author)
conference paper 2000
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Battjes, J.A. (author), Janssen, J.P.F.M. (author)
A description is given of a model developed for the prediction of the dissipation of energy in random waves breaking on a beach. The dissipation rate per breaking wave is estimated from that in a bore of corresponding height, while the probability of occurrence of breaking waves is estimated on the basis of a wave height distribution with an...
conference paper 1978
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