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Bruinsma, J. (author), Janssen, P.A.E.M. (author), Komen, G.J. (author), Peeck, H.H. (author), Saraber, M.J.M. (author), De Voogt, W.J.P. (author)The purpose of this report is to give a description of the GONO computercode, which is operational at KNMI for many years now. The program was developed by J.W. Sanders, and its deep water version is based on a Norwegian wave prediction model. built by C. Haug in the sixties. Shallow water effects are however important in the southern part of...report 1980
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Walker, W.E. (author), Harremoës, P. (author), Rotmans, J. (author), Van der Sluijs, J.P. (author), Van Asselt, M.B.A. (author), Janssen, P. (author), Krayer von Krauss, M.P. (author)The aim of this paper is to provide a conceptual basis for the systematic treatment of uncertainty in model-based decision support activities such as policy analysis, integrated assessment and risk assessment. It focuses on the uncertainty perceived from the point of view of those providing information to support policy decisions (i.e., the...journal article 2003
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Janssen, T.T. (author)As ocean surface waves radiate into shallow coastal areas and onto beaches, their lengths shorten, wave heights increase, and the wave shape transforms from nearsinusoidal to the characteristic saw-tooth shapes at the onset of breaking; in the ensuing breaking process the wave energy is cascaded to small-scale turbulent motions in the surf zone....doctoral thesis 2006
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Klievink, B. (author), Janssen, M. (author)Joining up remains a high priority on the e-government agenda and requires extensive transformation. Stage models are predictable patterns which exist in the growth of organizations and unfold as discrete time periods that result in discontinuity and can help e-government development towards joined-up government. Although stage models may be...journal article 2009
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Ruijven, B. (author), Van der Sluijs, J.P. (author), Van Vuuren, D.P. (author), Janssen, P. (author), Heuberger, P.S.C. (author), De Vries, B. (author)Uncertainties in energy demand modelling originate from both limited understanding of the real-world system and a lack of data for model development, calibration and validation. These uncertainties allow for the development of different models, but also leave room for different calibrations of a single model. Here, an automated model calibration...journal article 2009
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Joha, A. (author), Janssen, M.F.W.H.A. (author)Software as a Service (SaaS) can be viewed as the fourth wave of outsourcing. SaaS is a relatively new type of service delivery model in which a service provider delivers its services over the web to many users on a pay per use or period basis. In the scarce literature available, the SaaS business model is almost always analyzed from the...journal article 2012
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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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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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Trakas, A. (author), Janssen, P. (author), Stoter, J. (author)Individuals and organisations around the world - facing extraordinary challenges and new opportunities - are together engaged in numerous projects, involving natural and built environments. Spatial information policy is at the heart of these projects. The information technologies available enable individuals to observe, measure, describe, map...journal article 2012
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- Klievink, A.J. (author), Janssen, M.F.W.H.A. (author) journal article 2012
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Deljoo, A. (author), Janssen, M.F.W.H.A. (author), Klievink, A.J. (author)Public-private service networks (PPSN) consist of social and technology components. Development of PPSN is ill-understood as these are dependent on a complex mix of interactions among stakeholders and their technologies and is influenced by contemporary developments. The aim of this paper is to advance our understanding of PPSN by modeling its...conference paper 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, P. (author)Designers interested in applying evo-devo-design methods for performance based multi-objective design exploration have typically faced two main hurdles: its too hard and too slow. An evo-devo-design method is proposed that effectively overcomes the hurdles of skill and speed by leveraging two key technologies: computational workflows and cloud...conference paper 2013
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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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- Susha, I (author), Zuiderwijk-van Eijk, A.M.G. (author), Janssen, M.F.W.H.A. (author), Grönlund, Åke (author) journal article 2015
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Heikkila, M. (author), Bouwman, W.A.G.A. (author), Heikkila, J. (author), Solaimani, S. (author), Janssen, W. (author)Development of successful business models has become a necessity in turbulent business environments, but compared to research on business modeling tools, attention to the role of metrics in designing business models in literature is limited. Building on existing approaches to business models and performance measurement literature, we develop a...journal article 2015
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Dwivedi, Yogesh K. (author), Janssen, M.F.W.H.A. (author), Slade, Emma L. (author), Rana, Nripendra P. (author), Weerakkody, Vishanth (author), Millard, Jeremy (author), Hidders, Jan (author), Snijders, D. (author)Innovation is vital to find new solutions to problems, increase quality, and improve profitability. Big open linked data (BOLD) is a fledgling and rapidly evolving field that creates new opportunities for innovation. However, none of the existing literature has yet considered the interrelationships between antecedents of innovation through...journal article 2016
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Dwivedi, Yogesh K. (author), Rana, Nripendra P. (author), Janssen, M.F.W.H.A. (author), Lal, Banita (author), Williams, Michael D. (author), Clement, Marc (author)In electronic government (hereafter e-government), a large variety of technology adoption models are employed, which make researchers and policymakers puzzled about which one to use. In this research, nine well-known theoretical models of information technology adoption are evaluated and 29 different constructs are identified. A unified model...journal article 2017
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Haaker, T.I. (author), Bouwman, W.A.G.A. (author), Janssen, W (author), de Reuver, Mark (author)Business models and business model innovation are increasingly gaining attention in practice as well as in academic literature. However, the robustness of business models (BM) is seldom tested vis-à-vis the fast and unpredictable changes in digital technologies, regulation and markets. The evaluation of the robustness of a BM raises several...journal article 2017
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Janssen, S.A.M. (author)We investigate the use of an Agent-based framework to identify and quantify the relationship between security and efficiency within airport terminals. In this framework, we define a novel Security Risk Assessment methodology that explicitly models attacker and defender behavior in a security scenario. It produces a security risk vector,...conference paper 2017