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- Klievink, A.J. (author), Janssen, M.F.W.H.A. (author) journal article 2012
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Zuiderwijk-van Eijk, A.M.G. (author), Janssen, M.F.W.H.A. (author)In developing open data policies, governments aim to stimulate and guide the publication of government data and to gain advantages from its use. Currently there is a multiplicity of open data policies at various levels of government, whereas very little systematic and structured research has been done on the issues that are covered by open data...journal article 2013
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Rodriguez, S.R.K. (author), Janssen, O.T.A. (author), Lozano, G. (author), Omari, A. (author), Hens, Z. (author), Gomez Rivas, J. (author)We numerically demonstrate that a periodic array of metallic nanorods sustains a maximum near-field enhancement and a far field (FF)-induced transparency at the same energy and in-plane momentum. The coupling of bright and dark plasmonic lattice resonances, and electromagnetic retardation along the nanorod length, are responsible for this effect...journal article 2013
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Zhu, S.E. (author), Ghatkesar, M.K. (author), Zhang, C. (author), Janssen, G.C.A.M. (author)We present a pressure sensor based on the piezoresistive effect of graphene. The sensor is a 100?nm thick, 280??m wide square silicon nitride membrane with graphene meander patterns located on the maximum strain area. The multilayer, polycrystalline graphene was obtained by chemical vapor deposition. Strain in graphene was generated by applying...journal article 2013
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Braat, J.J.M. (author), Janssen, A.J.E.M. (author)Various authors have presented the aberration function of an optical system as a power series expansion with respect to the ray coordinates in the exit pupil and the coordinates of the intersection point with the image field of the optical system. In practical applications, for reasons of efficiency and accuracy, an expansion with the aid of...journal article 2013
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Van den Brink, L. (author), Janssen, P. (author), Quak, W. (author)Linked data provide an alternative route for dissemination of spatial information as compared to the traditional SOA-based SDI approach. Where the latter is built on predefined structuring of semantics within domains, linked data is open to linking information to any data over the Web. In this respect both are complementary. The traditional...journal article 2013
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Smit, P.B. (author), Janssen, T.T. (author)The interaction of ocean waves with variable currents and topography in coastal areas can result in inhomogeneous statistics because of coherent interferences, which affect wave-driven circulation and transport processes. Stochastic wave models, invariably based on some form of the radiative transfer equation (or action balance), do not account...journal article 2013
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Janssen, R.M.J. (author), Baselmans, J.J.A. (author), Endo, A. (author), Ferrari, L. (author), Yates, S.J.C. (author), Baryshev, A.M. (author), Klapwijk, T.M. (author)We demonstrate photon noise limited performance in both phase and amplitude readout in microwave kinetic inductance detectors (MKIDs) consisting of NbTiN and Al, down to 100 fW of optical power. We simulate the far field beam pattern of the lens-antenna system used to couple radiation into the MKID and derive an aperture efficiency of 75%. This...journal article 2013
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Janssen, M.F.W.H.A. (author), Tan, Y. (author)Recent scandals have stressed the need for information sharing among companies and governments. The sharing of information is not easy as companies want to keep their administrative burden low, whereas governments need high information quality. These drivers have resulted in the initiating of programs for developing infrastructures for...journal article 2014
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Calado, V.E. (author), Zhu, S.E. (author), Goswami, S. (author), Xu, Q. (author), Watanabe, K. (author), Taniguchi, T. (author), Janssen, G.C.A.M. (author), Vandersypen, L.M.K. (author)In this letter, we report the observation of ballistic transport on micron length scales in graphene synthesised by chemical vapour deposition (CVD). Transport measurements were done on Hall bar geometries in a liquid He cryostat. Using non-local measurements, we show that electrons can be ballistically directed by a magnetic field (transverse...journal article 2014
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Penkin, D. (author), Janssen, G.J.M. (author), Yarovoy, A. (author)To effectively localise a source node in a dense wireless tiny-sensor network with an arbitrary 2D/3D node distribution, a novel approach suitable to describe the hop progress of source-to-sink path in such a system is proposed. In this approach, the network topology is described as a regular lattice and relates the statistical parameters of the...journal article 2014
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Zuiderwijk, A.M.G. (author), Helbig, N. (author), Gil-García, J.R. (author), Janssen, M.F.W.H.A. (author)For decades good governance scholarship has focused attention on the importance of government openness [26], [34]. Since the 1960s, Freedom of Information (FOI) legislation has formed the backbone of institutional support for opening information and documents [76] and participatory processes [4], [79]. However, FOI represents a passive approach...journal article 2014
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Zuiderwijk, A.M.G. (author), Janssen, M.F.W.H.A. (author), Davis, C.B. (author)Open data ecosystems are expected to bring many advantages, such as stimulating citizen participation and innovation. However, scant attention has been given to what constitutes an open data ecosystem. The objective of this paper is to provide an overview of essential elements of open data ecosystems for enabling easy publication and use of open...journal article 2014
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Zuiderwijk, A.M.G. (author), Janssen, M.F.W.H.A. (author), Choenni, R. (author), Meijer, R.F. (author)· Purpose: Governments create large amounts of data. However, the publication of open data is often cumbersome and there are no standard procedures and processes for opening data. This blocks the easy publication of government data. The purpose of this paper is to derive design principles for improving the open data publishing process of public...journal article 2014
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Klievink, A.J. (author), Janssen, M.F.W.H.A. (author)Information infrastructures of businesses and government are increasingly interwoven and highly dependent on each other. Though often referred to as sociotechnical innovations, the development of these information infrastructures often has a technological focus. The related and even concurrent development of new social practices is understudied....journal article 2014
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Janssen, D.M. (author), Sanders, A.P. (author), Guldemond, N.A. (author), Hermus, J. (author), Walenkamp, G.H. (author), Van Rhijn, L.W. (author)Background Hallux valgus deformity is a common musculoskeletal foot disorder with a prevalence of 3.5% in adolescents to 35.7% in adults aged over 65 years. Radiographic measurements of hallux valgus angles (HVA) are considered to be the most reproducible and accurate assessment of HVA. However, in European countries, many podiatrists do not...journal article 2014
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Zuiderwijk, A.M.G. (author), Gascó, M. (author), Parycek, P. (author), Janssen, M.F.W.H.A. (author)Literature and policy reports suggest that open data can be used as a tool to enhance transparency. However, several researchers have challenged the idea that the release of government data will result in increased transparency and the idea that transparency automatically leads to more trust in the government. Moreover, transparency may have...journal article 2014
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Penkin, D. (author), Janssen, G. (author), Yarovoy, A. (author)The power budget of a wireless link between two electrically small sensor nodes located close to an interface between two media is studied. The model includes both the propagation channel losses and input impedance of the radio frequency antennas. It is shown that a highly inductive half-space significantly enhances the received power due to the...journal article 2014
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Brous, P.A. (author), Overtoom, I. (author), Herder, P.M. (author), Versluis, A. (author), Janssen, M.F.W.H.A. (author)Data infrastructures represent information about physical reality. As reality changes, data infrastructures might also be subject to change. Researchers have increasingly approached physical infrastructures as being complex adaptive systems (CAS). Although physical infrastructures are often approached as CAS, the underlying data infrastructures...journal article 2014
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Höchtl, J. (author), Davies, T. (author), Janssen, M.F.W.H.A. (author), Schieferdecker, I. (author)Open data has been given a lot of attention in the public. In some situation ‘open by default’ has become established as a core principle, whereas others argue about the limited results and the lack of robust studies demonstrating the value, and point to the risk that open data might turn out to be a short lived policy fad. This special issue...journal article 2014