Searched for: subject:"measurement"
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Olavarria Contreras, I.J. (author)
This thesis is about measurements of the electrical properties of different families of molecules. The research was focused on fundamental questions of charge transport in organic molecules. With this aim, experiments were performed to shed light on the underlying transport mechanisms. For example, an important ingredient of the work concerned...
doctoral thesis 2018
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Versteijlen, W.G. (author)
Offshore wind generated electricity is currently one of the most promising sources of energy to contribute in creating a sustainable global energy mix. The latter is essential for minimising the detrimental impact of human-induced accelerated climate change. The cost of offshore wind power has strongly decreased over the past years due to ...
doctoral thesis 2018
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De Angelis, L. (author), Kuipers, L. (author)
Vortices, phase singularities, and topological defects of any kind often reflect information that is crucial for understanding physical systems in which such entities arise. With near-field experiments supported by numerical calculations, we determine the fluctuations of the topological charge for phase singularities in isotropic random waves as...
journal article 2018
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van der Slikke, R.M.A. (author)
Performance in wheelchair court sports is to a large extent determined by the wheelchair mobility performance, the performance measure for the wheelchair-athlete combination. So far, wheelchair mobility performance is mostly utilized as concept, rather than a well quantified measure. However, in order to gain insight in the interaction between...
doctoral thesis 2018
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van Oosterhout, J. (author)
The success of future fusion power plants as a sustainable energy source greatly depends on their uptime. This uptime relies on the plant's maintenance, which must be performed via tele-manipulation. Tele-manipulated maintenance is challenging, as exemplified by strictly selected and highly trained operators who still require more time to work...
doctoral thesis 2018
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Nunez Vicencio, Alfredo (author), Popa, Tudor (author), Anghel, Lucian Emmanuel (author), Hendriks, J.M. (author), Moraal, J. (author), Buretea, Laurentiu Dorin (author), Paragreen, Jon (author), Miron, Berbece (author), Gheorghe, Draghici (author), Campean, Mihail (author), Dollevoet, R.P.B.J. (author), Li, Z. (author)
In this paper, we present preliminary results on the development of smart technology solutions for lower density railway lines. The goal is to reach a cost effective inspection and asset management to minimize maintenance
interventions time/cost without dedicated inspection vehicles. The proposed methods include axle box acceleration...
conference paper 2018
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Chang, L. (author), Dollevoet, R.P.B.J. (author), Hanssen, R.F. (author)

Satellite radar interferometry (InSAR) is an emerging technique to monitor the stability and health of line-infrastructure assets, such as railways, dams, and pipelines. However, InSAR is an opportunistic approach as the location and occurrence of its measurements (coherent scatterers) cannot be guaranteed, and the quality of the InSAR...

journal article 2018
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Van der Bent, Eduard (author), Hage, Jurriaan (author), Visser, Joost (author), Gousios, Giorgos (author)
Puppet is a declarative language for configuration management that has rapidly gained popularity in recent years. Numerous organizations now rely on Puppet code for deploying their software systems onto cloud infrastructures. In this paper we provide a definition of code quality for Puppet code and an automated technique for measuring and rating...
conference paper 2018
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Pfitzenmaier, L. (author)
Clouds are a prominent part of the Earth hydrological cycle. In the mid latitudes, the ice phase of clouds is highly involved in the formation of precipitation. The ice particles in the clouds fall to earth either as snow flakes, in the winter month, or melting crystals that become rain drops. An efficient growth process is the interaction of...
doctoral thesis 2018
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Snellen, M. (author), Gaida, T.C. (author), Koop, L. (author), Alevizos, Evangelos (author), Simons, D.G. (author)
Obtaining an overview of the spatial and temporal distribution of seabed sediments is of high interest for multiple research disciplines. Multibeam echosounders allow for the mapping of seabed sediments with high area coverage. In this paper, the repeatability of acoustic classification derived from multibeam echosounder backscatter is addressed...
journal article 2018
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Salimi, Negin (author), Rezaei, J. (author)

Since research and development (R&D) is the most critical determinant of the productivity, growth and competitive advantage of firms, measuring R&D performance has become the core of attention of R&D managers, and an extensive body of literature has examined and identified different R&D measurements and determinants of R&D...

journal article 2018
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Tauro, Flavia (author), Selker, J.S. (author), van de Giesen, N.C. (author), Abrate, Tommaso (author), Uijlenhoet, Remko (author), Porfiri, Maurizio (author), Manfreda, Salvatore (author), Caylor, Kelly (author), Moramarco, Tommaso (author), Benveniste, Jerome (author), Ciraolo, Giuseppe (author), Estes, Lyndon (author), Domeneghetti, Alessio (author), Perks, Matthew T. (author), Corbari, Chiara (author), Rabiei, Ehsan (author), Ravazzani, Giovanni (author), Bogena, Heye (author), Harfouche, Antoine (author), Brocca, Luca (author), Maltese, Antonino (author), Wickert, Andy (author), Tarpanelli, Angelica (author), Good, Stephen (author), Lopez Alcala, Jose Manuel (author), Petroselli, Andrea (author), Cudennec, Christophe (author), Blume, Theresa (author), Hut, R.W. (author), Grimaldi, Salvatore (author)

To promote the advancement of novel observation techniques that may lead to new sources of information to help better understand the hydrological cycle, the International Association of Hydrological Sciences (IAHS) established the Measurements and Observations in the XXI century (MOXXI) Working Group in July 2013. The group comprises a...

journal article 2018
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Chu, L. (author)
Atomic Force Microscopy (AFM) can not only image the topography of surfaces at atomic resolution, but can also measure accurately the different interaction forces, like repulsive, adhesive and lateral existing between an AFM tip and the sample surface. Based on AFM, various extended techniques have been developed such as colloidal probe AFM,...
doctoral thesis 2018
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Solcerova, A. (author), van Emmerik, T.H.M. (author), van de Ven, F.H.M. (author), Selker, J.S. (author), van de Giesen, N.C. (author)

A phenomenon known as the skin effect-a layer of surface water that is colder than the water beneath it-was previously described in oceanography and verified in lab measurements. Only a few measurements have been done on the skin effect in field conditions, and therefore this phenomenon is relatively unknown. This paper presents measurements...

journal article 2018
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van der Kruk, E. (author), Reijne, M.M. (author), de Laat, Bjorn (author), Veeger, H.E.J. (author)

This study performed an analysis of the push-off forces of elite-short-track speed skaters using a new designed instrumented short-track speed skate with the aim to improve short-track skating performance. Four different skating strokes were distinguished for short-track speed skaters at speed. The strokes differed in stroke time, force level...

journal article 2018
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Sandberg, Evelien M. (author), Driessen, Sara R C (author), Bak, Evelien A.T. (author), van Geloven, Nan (author), Berger, Judith P. (author), Smeets, Mathilde J.G.H. (author), Rhemrev, Johann P T (author), Jansen, F.W. (author)

Background: Pelvic endometriosis is often mentioned as one of the variables influencing surgical outcomes of laparoscopic hysterectomy (LH). However, its additional surgical risks have not been well established. The aim of this study was to analyze to what extent concomitant endometriosis influences surgical outcomes of LH and to determine if...

journal article 2018
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Ioannou, A. (author), Itard, L.C.M. (author), Agarwal, Tushar (author)

Indoor thermal comfort is generally assessed using the PMV or the adaptive model. This research presents the results obtained by in-situ real time measurements of thermal comfort and thermal comfort perception in 17 residential dwellings in the Netherlands. The study demonstrates the new possibilities offered by relatively cheap, sensor-rich...

journal article 2018
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Vlachogiannakis, G. (author), Pertijs, M.A.P. (author), Spirito, M. (author), de Vreede, L.C.N. (author)
A compact sensing pixel for the determination of the localized complex permittivity at microwave frequencies is proposed. Implemented in the 40-nm CMOS, the architecture comprises a square patch, interfaced to the material-under-test sample, that provides permittivity-dependent admittance. The patch admittance is read out by embedding the patch...
journal article 2018
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Koutrouvelis, A. (author), Sherson, T.W. (author), Heusdens, R. (author), Hendriks, R.C. (author)

We propose a new robust distributed linearly constrained beamformer which utilizes a set of linear equality constraints to reduce the cross power spectral density matrix to a block-diagonal form. The proposed beamformer has a convenient objective function for use in arbitrary distributed network topologies while having identical performance...

journal article 2018
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Fontanari, A. (author), Cirillo, P. (author)
We study the problems related to the estimation of the Gini index in presence of a fat-tailed data generating process, i.e. one in the stable distribution class with finite mean but infinite variance (i.e. with tail index α∈(1,2)). We show that, in such a case, the Gini coefficient cannot be reliably estimated using conventional nonparametric...
journal article 2018
Searched for: subject:"measurement"
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