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document
de Beer, F.G. (author), Verheij, J.W. (author), Technisch Physische Dienst TNO - TH (author)
Pass-by noise from freight trains on straight tracks is dominated by rolling noise. The main contributions are generally accepted to originate from vibrations of the track and the wheels. However, there is uncertainty about the contributions from the bogie and the wagon superstructure. This article describes experimental methods to determine...
article 2000
document
Steeneken, H.J.M. (author), Houtgast, T. (author), TNO Technische Menskunde (author)
In an earlier study we derived robust frequency-weighting functions for prediction of the intelligibility of short nonsense words.These frequency-weighting functions are applied for prediction of intelligibility such as with the speech transmission index (STI).Six independent experiments revealed essentially similar frequency-weighting functions...
article 2002
document
Berendrecht, W.L. (author), Heemink, A.W. (author), van Geer, F.C. (author), Gehrels, J.C. (author)
A state-space representation of the transfer function-noise (TFN) model allows the choice of a modeling (input) interval that is smaller than the measuring interval of the output variable. Since in geohydrological applications the interval of the available input series (precipitation excess) is often smaller than the interval of the output...
article 2003
document
Leskens, M. (author), van den Hof, P.M.J. (author), TNO Milieu, Energie en Procesinnovatie (author)
In many multivariable industrial processes a subset of the available input signals is being controlled. In this paper it is analyzed in which sense the resulting partial closed-loop 1 identification problem is actually a full closed-loop problem, or whether one can benefit from the presence of noncontrolled inputs to simplify the identification...
conference paper 2004
document
Bronkhorst, A.W. (author), Brungart, D.S. (author), TNO Defensie en Veiligheid (author)
The advanced developments in research on spatial and binaural auditory perception, were described. The research on sound localization revealed one important development of virtual acoustic space (VAS) as a research tool. Sound sources in VAS can be repositioned in other acoustic environments. The second research area included sound segregation,...
article 2005
document
van Erp, J.B.F. (author), TNO Defensie en Veiligheid (author)
Vibrotactile displays covering the torso present spatial information in an intuitive way since the stimuli are directly mapped to the body coordinates; left is left, front is front, etc. The present study investigated the direction in the horizontal plane to which a specific torso location is mapped using a 15 tactor linear display. Participants...
article 2005
document
Berendrecht, W.L. (author), Heemink, A.W. (author), van Geer, F.C. (author), Gehrels, J.C. (author), TNO Bouw en Ondergrond (author)
A non-linear state space model is developed for describing groundwater fluctuations. Non-linearity is introduced by modeling the (unobserved) degree of water saturation of the root zone. The non-linear relations are based on physical concepts describing the dependence of both the actual evapotranspiration and the percolation rate on the degree...
article 2006
document
Groen, E.L. (author), Wentink, M. (author), Valente Pais, A.R. (author), Mulder, M. (author), van Paassen, M.M. (author), TNO Defensie en Veiligheid (author)
Pilot perception models include detailed descriptions of the sensory dynamics involved in human spatial orientation. For example, the TNO Spatial Orientation model contains transfer functions of the visual and vestibular system (semicircular canals and otoliths). In our previous attempts to apply this model for the validation of simulator motion...
conference paper 2006
document
Janssens, M.H.A. (author), Dittrich, M.G. (author), de Beer, F.G. (author), Jones, C.J.C. (author)
In recent years, considerable effort has been spent at a European level to establish comprehensive methods for the experimental assessment of rolling noise emission of rail-bound vehicles and tracks. This work was concentrated in the European METARAIL and STAIRRS projects. The objective of these was to improve the accuracy and the...
article 2006
document
TNO Defensie en Veiligheid (author), Wentink, M. (author), Bos, J.E. (author), Groen, E.L. (author), Hosman, R. (author)
The goal of this paper is to give an overview and some practical examples of the Motion Perception Toolbox developed by TNO (Netherlands Organization for Applied Research) as a freeware Matlab Simulink library. The MPT library provides a documented set of building blocks that model human perception and are easily coupled to existing simulation...
conference paper 2006
document
Heiri, O. (author), Cremer, H. (author), Engels, S. (author), Hoek, W.Z. (author), Peeters, W. (author), Lotter, A.F. (author), TNO Bouw en Ondergrond (author)
Lateglacial environments at Hijkermeer, northwest Netherlands, were reconstructed by means of chironomid, diatom and pollen analyses. Diatom assemblages indicate that Hijkermeer was a shallow, oligo- to mesotrophic lake during this period. Pollen assemblages reflect the typical northwest European Lateglacial vegetation development and provide an...
article 2007
document
Bruni, S. (author), Neto, A. (author), Marliani, F. (author), TNO Defensie en Veiligheid (author)
A novel directive and nondispersive antenna is presented: the ultrawideband (UWB) leaky lens. It is based on the broad band Cherenkov radiation occurring at a slot printed between different infinite homogeneous dielectrics. The first part of the paper presents the antenna concept and the UWB design. The issues that are specifically addressed...
article 2007
document
Hinnen, K. (author), Verhaegen, M. (author), Doelman, N.J. (author), TNO Industrie en Techniek (author)
A recently proposed data-driven H2-optimal control approach is demonstrated on a laboratory setup. Most adaptive optics (AO) systems are based on a control law that neglects the temporal evolution of the wavefront. The proposed control approach is able to exploit the spatiotemporal correlation in the wavefront without assuming any form of...
article 2007
document
de Baar, M.R. (author), Bongers, W.A. (author), van Berkel, M. (author), Doelman, N.J. (author), Hennen, B.A. (author), Nuij, P. (author), Oosterbeek, J.W. (author), Steinbuch, M. (author), Westerhof, E. (author), Witvoet, G. (author)
Resistive magneto-hydrodynamic instabilities are expected to limit the performance of nuclear fusion reactors. Prime examples are the sawtooth instability and the neoclassical tearing modes. The sawtooth instability will affect the refueling of the plasma core and the fast particle concentration. In reactor relevant conditions, the sawtooth can...
conference paper 2011
document
Bosschaart, C. (author), Jansen, H.W. (author), de Jong, C.A.F. (author), Basten, T. (author)
A concept for underwater machinery noise mitigation of future civil and military ships is the application of a common deck structure, supporting multiple machines, which is installed on resilient mounts on the ship's foundation structure. TNO is addressing the availability and testing of tools to be able to set realistic targets for the radiated...
conference paper 2017
document
Zhao, Z. (author), Karimzadeh, M. (author), Braun, T. (author), Pras, A. (author), van den Berg, J.L. (author)
Network Function Virtualization involves implementing network functions (e.g., virtualized LTE component) in software that can run on a range of industry standard server hardware, and can be migrated or instantiated on demand. A prediction service hosted on cloud infrastructures enables consumers to request the prediction information on-demand...
conference paper 2017
document
Wetzels, F. (author), van den Berg, J.L. (author), Bosman, J.W. (author), van der Mei, R. (author)
In service function chaining, data flows from a particular application or user travel along a pre-defined sequence of network functions. Appropriate service function chaining resource allocation is required to comply with the service level required by the application. In this paper, we introduce a dynamic priority assignment for flows that...
conference paper 2019
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