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Aly, H.A. (author), Nealon, Rebecca (author), Gonzalez, Jean-François (author)We identify a new dust instability that occurs in warped discs. The instability is caused by the oscillatory gas motions induced by the warp in the bending wave regime. We first demonstrate the instability using a local 1D (vertical) toy model based on the warped shearing box coordinates and investigate the effects of the warp magnitude and...journal article 2024
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Umbrello, S. (author), Bernstein, Michael J. (author), Vermaas, P.E. (author), Resseguier, Anaïs (author), Gonzalez, Gustavo (author), Porcari, Andrea (author), Grinbaum, Alexei (author), Adomaitis, Laurynas (author)Various approaches have emerged over the last several decades to meet the challenges and complexities of anticipating and responding to the potential impacts of emerging technologies. Although many of the existing approaches share similarities, they each have shortfalls. This paper takes as the object of its study Anticipatory Ethics for...journal article 2023
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de Almeida Nieto, L.M. (author), Gabrieli, Francesca (author), van Loon, A. (author), Gonzalez, Victor (author), Dik, J. (author), Van de Plas, Raf (author), Alfeld, M.W.E.M. (author)Macroscopic x-ray fluorescence imaging spectroscopy (MA-XRF) and reflectance imaging spectroscopy (RIS) are important tools in the analysis of cultural heritage objects, both for conservation and art historical research purposes. The elemental and molecular distributions provided by MA-XRF and RIS respectively, are particularly useful for the...journal article 2023
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Cotte, Marine (author), Gonzalez, Victor (author), Vanmeert, Frederik (author), Jiménez, Núria (author), Possenti, Elena (author), Ghirardello, Marta (author), Avranovich Clerici, E. (author), Vivani, Riccardo (author), Taniguchi, Yoko (author), McCarthy, Joanne (author)The European Synchrotron Radiation Facility (ESRF) has recently commissioned the new Extremely Brilliant Source (EBS). The gain in brightness as well as the continuous development of beamline instruments boosts the beamline performances, in particular in terms of accelerated data acquisition. This has motivated the development of new access...journal article 2022
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Tepljakov, Aleksei (author), Alagoz, Baris Baykant (author), Yeroglu, Celaleddin (author), Gonzalez, Emmanuel A. (author), Hassan HosseinNia, S. (author), Petlenkov, Eduard (author), Ates, Abdullah (author), Cech, Martin (author)The interest in fractional-order (FO) control can be traced back to the late nineteenth century. The growing tendency towards using fractional-order proportional-integral-derivative (FOPID) control has been fueled mainly by the fact that these controllers have additional 'tuning knobs' that allow coherent adjustment of the dynamics of control...journal article 2021
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van Loon, A. (author), Gambardella, Alessa A. (author), Gonzalez, V.M.J.M. (author), Cotte, Marine (author), De Nolf, Wout (author), Keune, Katrien (author), Leonhardt, Emilien (author), de Groot, Suzan (author), Proaño Gaibor, Art Ness (author), Vandivere, Abbie (author)Johannes Vermeer (1632–1675) is known for his brilliant blue colours, and his frequent use of the costly natural ultramarine. This paper reveals new findings about ultramarine in the headscarf of Girl with a Pearl Earring (c. 1665, Mauritshuis). The painting was examined using a range of micro- and macroscale techniques as part of the Girl in...journal article 2020
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Roy, Devjeet (author), Zhang, Ziyi (author), Ma, Maggie (author), Arnaoudova, Venera (author), Panichella, A. (author), Panichella, Sebastiano (author), Gonzalez, Danielle (author), Mirakhorli, Mehdi (author)Automated test case generation tools have been successfully proposed to reduce the amount of human and infrastructure resources required to write and run test cases. However, recent studies demonstrate that the readability of generated tests is very limited due to (i) uninformative identifiers and (ii) lack of proper documentation. Prior...conference paper 2020
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Alfeld, M.W.E.M. (author), Gonzalez, V.M.J.M. (author), van Loon, A. (author)The nonplanar shape of a painting as well as practical constraints often result in the painting's surface not being parallel to the plane in that the measurement head of a MA-XRF scanner is being moved. Changing the working distance affects the measurement geometry, so that the sensitivity for the same element may vary throughout the...journal article 2020
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Hermans, Martijn (author), Lenstra, Wytze K. (author), Hidalgo-Martinez, Silvia (author), van Helmond, Niels A.G.M. (author), Witbaard, Rob (author), Meysman, F.J.R. (author), Gonzalez, Santiago (author), Slomp, Caroline P. (author)Oxygen depletion in coastal waters may lead to release of toxic sulfide from sediments. Cable bacteria can limit sulfide release by promoting iron oxide formation in sediments. Currently, it is unknown how widespread this phenomenon is. Here, we assess the abundance, activity, and biogeochemical impact of cable bacteria at 12 Baltic Sea sites...journal article 2019
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De Meyer, Steven (author), Vanmeert, Frederik (author), Vertongen, Rani (author), van Loon, A. (author), Gonzalez, V.M.J.M. (author), van der Snickt, Geert (author), Vandivere, Abbie (author), Janssens, Koen (author)The use of non-invasive macroscopic imaging techniques is becoming more prevalent in the field of cultural heritage, especially to avoid invasive procedures that damage valuable artworks. For this purpose, an X-ray powder diffraction scanner (MA-XRPD) capable of visualising crystalline compounds in a highly specific manner was recently...journal article 2019
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De Meyer, S. (author), Vanmeert, F. (author), Vertongen, R. (author), Van Loon, A. (author), Gonzalez, V.M.J.M. (author), Delaney, J. (author), Dooley, K. (author), Dik, J. (author), Van der Snickt, G. (author), Vandivere, A. (author), Janssens, K. (author)Until the 19th century, lead white was the most important white pigment used in oil paintings. Lead white is typically composed of two crystalline lead carbonates: hydrocerussite [2PbCO<sub>3</sub>·Pb(OH)<sub>2</sub>] and cerussite (PbCO<sub>3</sub>). Depending on the ratio between hydrocerussite and cerussite, lead white can be classified...journal article 2019
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Norambuena-Contreras, J. (author), Gonzalez, A. (author), Concha, J. L. (author), Gonzalez-Torre, I. (author), Schlangen, E. (author)This paper aims to evaluate the effect of metallic waste addition on the electrical, thermophysical and microwave crack-healing properties of asphalt mixtures. With this purpose, asphalt mixtures with two different types of metallic waste, steel wool fibres and steel shavings, added in four different contents, were tested. Electrical and...journal article 2018
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Schepers, J.G. (author), Boorsma, K. (author), Sorensen, N. (author), Voutsinas, V. (author), Sieros, G. (author), Rahimi, H. (author), Heisselmann, H. (author), Jost, E. (author), Lutz, T. (author), Maeder, T. (author), Gonzalez, A. (author), Ferreira, Carlos (author), Stoevesandt, B. (author), Barakos, G. (author), Lampropoulos, N. (author), Croce, A. (author), Madsen, J. (author)This paper presents final results from the EU project AVATAR in which aerodynamic models are improved and validated for wind turbines on a scale of 10 MW and more. Special attention is paid to the improvement of low fidelity engineering (BEM based) models with higher fidelity (CFD) models but also with intermediate fidelity free vortex wake ...journal article 2018
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Gonzalez, E. (author), Tautz-Weinert, J. (author), Melero, J. J. (author), Watson, S.J. (author)Operational data from wind farms is crucial for wind turbine condition monitoring and performance assessment. In this paper, we analyse three wind farms with the aim to monitor environmental and operational conditions that might result in underperformance or failures. The assessment includes a simple wind speed characterisation and wake...journal article 2018
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Ferreira, Carlos (author), Gonzalez, A. (author), Baldacchino, D. (author), Aparicio, M. (author), Gomez, S (author), Munduate, X. (author), Garcia, N. R. (author), Sørensen, J. N. (author), Jost, E. (author), Knecht, S. (author), Lutz, T. (author), Chassapogiannis, P. (author), Diakakis, K. (author), Papadakis, G. (author), Voutsinas, S. (author), Prospathopoulos, J. (author), Gillebaart, T. (author), van Zuijlen, A.H. (author)The FP7 AdVanced Aerodynamic Tools for lArge Rotors - Avatar project aims to develop and validate advanced aerodynamic models, to be used in integral design codes for the next generation of large scale wind turbines (10-20MW). One of the approaches towards reaching rotors for 10-20MW size is the application of flow control devices, such as...journal article 2016
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Ceyhan, J. G Schepers O (author), Ceyhan, O (author), Boorsma, K. (author), Gonzalez, A. (author), Munduate, X. (author), Pires, O. (author), Sørensen, N. (author), Ferreira, Carlos (author), Sieros, G. (author), Madsen, J. (author), Voutsinas, S. (author), Lutz, T. (author), Barakos, G. (author), Colonia, S. (author), Heißelmann, H. (author), Meng, F. (author), Croce, A. (author)This paper presents the most recent results from the EU project AVATAR in which aerodynamic models are improved and validated for wind turbines on a scale of 10 MW and more. Measurements on a DU 00-W-212 airfoil are presented which have been taken in the pressurized DNW-HDG wind tunnel up to a Reynolds number of 15 Million. These measurements...journal article 2016
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Gonzalez, A. (author), Piel, E. (author), Gross, H.G. (author), Van Gemund, A.J.C. (author)Runtime testing is emerging as the solution for the integration and assessment of highly dynamic, high availability software systems where traditional development-time integration testing cannot be performed. A prerequisite for runtime testing is the knowledge about to which extent the system can be tested safely while it is operational, i.e.,...report 2010
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Gonzalez, R.A. (author)Crisis response efforts often require coordinating a previously unknown adhocracy of agencies under time pressure. While current technologies that support coordination are successful for well-defined static process descriptions, they may fall short in the face of more complex and unpredictable scenarios, such as a crisis or emergency. Using...doctoral thesis 2010
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Gonzalez, A. (author), Piel, E. (author), Gross, H.G. (author)Version: Accepted as short paper at QSIC 2009. Runtime testing is emerging as the solution for the integration and assessment of highly dynamic, high availability software systems where traditional development-time integration testing is too costly, or cannot be performed. However, in many situations, an extra cost will have to be invested in...report 2009
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Gonzalez, A. (author), Piel, E.A.B. (author), Gross, H.G. (author), Van Gemund, A.J.C. (author)Paper submitted for review at QSIC'10 Test prioritization techniques select test cases that maximize the confidence on the correctness of the system when the resources for quality assurance (QA) are limited. In the event of a test failing, the fault at the root of the failure has to be localized, adding an extra debugging cost that has to be...report 2009
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