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El Boustani, Ossama (author)This work describes a fully digital transmitter (DTX) for 5G mMIMO base stations that combines the strengths of high-speed digital CMOS with the high-power capabilities of a Monolithic Microwave Integrated Circuit (MMIC) high-voltage technology. This technology platform offers high integration and scalability for implementing Radio Frequency...master thesis 2023
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Daalman, W.K. (author), Sweep, E. (author), Laan, L. (author)Accurate phenotype prediction based on genetic information has numerous societal applications, such as crop design or cellular factories. Epistasis, when biological components interact, complicates modelling phenotypes from genotypes. Here we show an approach to mitigate this complication for polarity establishment in budding yeast, where...journal article 2023
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Mahapatra, G. (author), Abiad, F. (author), Rossi, L. (author), Stam, D.M. (author)Context. Terrestrial-type exoplanets in or near stellar habitable zones appear to be ubiquitous. It is, however, unknown which of these planets have temperate, Earth-like climates or for example, extreme Venus-like climates. Aims. Technical tools to distinguish different kinds of terrestrial-type planets are crucial for determining whether a...journal article 2023
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Bach, Elias (author)Climate change is an omnipresent issue in politics, industry, science, and society. Scientist knew of its existence for several decades, but only recently has the perception of it shifted from a solely environmental problem to a matter of international security. Climate change is thought to impact the likelihood of extreme weather events,...master thesis 2022
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Song, Yiyang (author)Ground clutter signal is a kind of unwanted echoes in target detection radar system, which are normally reflected by ground surface, ground-based objects, and obstacles. It can be collected and characterized in polar coordinates in terms of range and azimuth. By using polarimetric based algorithms, including them single channel detector, the...master thesis 2022
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Zaidi, Amir (author)In the field of computer vision, the difficulty of processing the illumination in an arbitrary scene creates complications for a machine's understanding of the scene. Computer vision algorithms commonly use input images acquired by a camera, where the only measured quantity is the amount of light the camera's sensor receives without any...master thesis 2022
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van Kouwen, Niels (author)Many sand spits are morphodynamically complex cases that are hard to quantify. Therefore, most case studies on sand spits in a specific type of environment, are descriptive or even non-existent. As is the case for spits in low-energy lake environments, like the two spits at the Marker Wadden islands. Because quantification is necessary for spits...master thesis 2022
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Meier-Ruge, Xenia (author)On the 25th of November 2018, NASA’s InSight Mars-lander landed at Elysium Planitia on Mars (NASA, 2022a). The lander includes the SEIS instrument, which measures the seismic signals on the planet (NASA, 2022b). Because seismic waves are altered by the medium they travel through from the source to the receiver, they contain information on the...master thesis 2022
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Bosma, Douwe (author)An isogeometric finite element method for incompressible fluid film equations is presented. The method can be applied to numerically model the behaviour of thin cellular membranes, such as lipid bilayers. The membranes are represented by infinitely thin closed surfaces. Both the surface parametrization and analysis are based on state-of-the-art...master thesis 2022
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Çakir, Nadiye (author)‘Wicked problems’ like Harmful and Immoral Online Behaviour is a complex social phenomenon which the Ministry of Justice and Security feel increasing urgency for. However, because such a phenomenon is complex and fast-paced it is hard to respond to.<br/><br/>Since 2018 Directie X has started to draw attention to Harmful and Immoral Online...master thesis 2022
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van Thiel, T.C. (author)Modern materials synthesis techniques allowfor the layer-by-layer assimilation of structurally similar, yet compositionally different materials into artificial crystals, with atomic scale precision. At the resulting heterointerfaces, structural, electronic and magnetic reconstructions can lead to physical phenomena that are otherwise absent in...doctoral thesis 2022
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Vanhamel, J. (author), Machiels, Walter (author), Lamy, Hervé (author)In the last couple of years, the use of weak signal propagation reporter (WSPR) has grown significantly in the radio amateur community and beyond. This protocol allows to probe potential propagation paths between radio transceivers, operating at a low-power level. The protocol decodes the received signals and translates them into appropriate...journal article 2022
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Rezapoor, Pouyan (author), Tamminen, Aleksi (author), Tamminen, Aleksi (author), Ala-Laurinaho, Juha (author), Llombart, Nuria (author), Rodilla, Helena (author), Stake, Jan (author), Taylor, Zachary D. (author)The optical behavior of a terahertz imaging system employing a train of four identical off-axis parabolic mirrors with oblique incidence angle illumination is investigated in this work. The aperture filling and aberrations of a single off-axis parabolic mirror when illuminated by a Gaussian terahertz beam at its focus point is measured and...conference paper 2022
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Chen, Cheng (author), Unal, C.M.H. (author), Oude Nijhuis, A.C.P. (author)An effective filtering technique is required for rainfall rate measurement by weather radar. A Jensen–Shannon distance (JSD)-based thresholding filter is proposed to mitigate nonmeteorological signals, either in clear air or rain situations. This algorithm classifies range-Doppler bins into two classes, hydrometeors and nonhydrometeors, based on...journal article 2022
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Cavallo, D. (author)A novel approach for the practical realization of the feeding lines in connected array of slots is presented. The proposed feed concept is based on a parallel-plate waveguide (PPW) structure and allows simplifying the unit cell design. When compared to the typical integrated coaxial feed, the PPW-based feeding structure can reduce the cost...journal article 2022
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Francis, Diana (author), Fonseca, Ricardo (author), Mattingly, Kyle S. (author), Marsh, Oliver J. (author), Lhermitte, S.L.M. (author), Cherif, Charfeddine (author)The calving of Antarctic ice shelves remains unpredictable to date due to a lack of understanding of the role of the different climatic components in such events. In this study, the role of atmospheric forcing in the calving of the Brunt Ice Shelf (BIS) in February 2021 is investigated using a combination of observational and reanalysis data....journal article 2022
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Aktürk, Gül (author)This paper systematically reviews publications for the period 2002–2020 addressing the barriers to climate adaptation of cultural and natural heritage in the Northern and Southern poles. Climate change and its socio-economic implications deteriorate different forms of cultural and natural heritage, including archaeological sites, historic...journal article 2022
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Zhao, Rui (author), Jiang, M. (author), Zhang, Shuoshuo (author), Man, Zhongsheng (author), Wang, Benyi (author), Ge, Xiaolu (author), Zhang, Wenfei (author), Zhang, Yuquan (author), Fu, Shenggui (author)A new type of radially polarized (RP) cosine-Gaussian (CG) field is proposed. Through the analytical model, it is found that such RP CG beam exhibits completely different focusing properties from the reported RP plane waves. More importantly, a stable three-dimensional trap of Rayleigh particle accompanied by a subwavelength spin motion can...journal article 2022
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Trees, V.J.H. (author), Stam, D.M. (author)ontext. Numerical simulations of starlight that is reflected by Earth-like exoplanets predict habitability signatures that can be searched for with future telescopes.<br/><br/>Aims. We explore signatures of water oceans in the flux and polarization spectra of this reflected light.<br/><br/>Methods. With an adding-doubling algorithm, we computed...journal article 2022
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Mulder, W. (author), Patty, C. H.Lucas (author), Spadaccia, Stefano (author), Pommerol, Antoine (author), Demory, Brice Olivier (author), Keller, Christoph U. (author), Kühn, Jonas G. (author), Snik, Frans (author), Stam, D.M. (author)Does life exist outside our Solar System A first step towards searching for life outside our Solar System is detecting life on Earth by using remote sensing applications. One powerful and unambiguous biosignature is the circular polarization resulting from the homochirality of biotic molecules and systems. We aim to investigate the...conference paper 2022