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van Schaik, L. (author), Duives, D.C. (author), Hoogendoorn-Lanser, S. (author), Hoekstra, Jan Willem (author), Daamen, W. (author), Gavriilidou, A. (author), Krishnakumari, P.K. (author), Rinaldi, M. (author), Hoogendoorn, S.P. (author)Physical distancing has been an important asset in limiting the SARS-CoV-2 virus spread during the COVID-19 pandemic. This study aims to assess compliance with physical distancing and to evaluate the combination of observed and self-reported data used. This research shows that it is difficult to operationalize new rules, that context affects...journal article 2024
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di Biase, V. (author), Hanssen, R.F. (author)Ghana's coastline has been facing erosion and sedimentation phenomena for several decades, resulting in a serious threat to life and property considering that major urban settlements are located on the coast. In this region, there has been a lack of emphasis on comprehensive, large-scale investigations into coastal changes: prior research has...journal article 2024
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Hernandez-Burgos, Sergi (author), Gibert, Ferran (author), Broquetas, Antoni (author), Kleinherenbrink, M. (author), De la Cruz, Adrian Flores (author), Gomez-Olive, Adria (author), Garcia-Mondejar, Albert (author), Aparici, Monica Roca i. (author)The 2-D frequency-based omega-K method is known to be a suitable algorithm for fully focused SAR (FF-SAR) radar altimeter processors, as its computational efficiency is much higher than equivalent time-based alternatives without much performance degradation. In this article, we provide a closed-form description of a 2-D frequency-domain omega...journal article 2024
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Yang, Chenyang (author), Sun, Jianwen (author), Zhang, Yulong (author), Tang, Jingya (author), Liu, Zizheng (author), Zhan, Teng (author), Wang, Dian-Bing (author), Zhang, Kouchi (author), Liu, Zewen (author), Zhang, Xian-En (author)The COVID-19 pandemic has highlighted the need for rapid and sensitive detection of SARS-CoV-2. Here, we report an ultrasensitive SARS-CoV-2 immunosensor by integration of an AlGaN/GaN high-electron-mobility transistor (HEMT) and anti-SARS-CoV-2 spike protein antibody. The AlGaN/GaN HEMT immunosensor has demonstrated the capability to detect...journal article 2024
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Altiparmaki, O. (author), Amraoui, Samira (author), Kleinherenbrink, M. (author), Moreau, Thomas (author), Maraldi, Claire (author), Visser, P.N.A.M. (author), Naeije, M.C. (author)This study presents the first azimuth cutoff analysis in Synthetic Aperture Radar (SAR) altimetry, aiming to assess its applicability in characterizing sea-state dynamics. In SAR imaging, the azimuth cutoff serves as a proxy for the shortest waves, in terms of wavelength, that can be detected by the satellite under certain wind and wave...journal article 2024
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den Besten, N.I. (author), Steele-Dunne, S.C. (author), Mahmud, Ashfak (author), Jackson, Daniel (author), Aouizerats, Benjamin (author), de Jeu, Richard (author), Burger, Rogier (author), Houborg, Rasmus (author), McGlinchey, Mark (author), van der Zaag, P. (author)Sentinel-1 observes the whole globe every 12 days (6 days when both satellites were operational) and provides a wealth of data relevant to agriculture. Sugarcane cultivators could potentially benefit from these data by using them to assist operational and management practices. However, first, thorough understanding is needed of Sentinel-1...journal article 2023
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Ehlers, F. (author), Schlembach, Florian (author), Kleinherenbrink, M. (author), Slobbe, D.C. (author)We demonstrate in this work how we can take advantage of known unfocused SAR (UF-SAR) retracking methods (e.g. the physical SAMOSA model) for retracking of fully-focused SAR (FF-SAR) waveforms. Our insights are an important step towards consistent observations of sea surface height, significant wave height and backscatter coefficient (wind...journal article 2023
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Schlembach, Florian (author), Ehlers, F. (author), Kleinherenbrink, M. (author), Passaro, Marcello (author), Dettmering, Denise (author), Seitz, Florian (author), Slobbe, D.C. (author)Estimating the three geophysical variables significant wave height (SWH), sea surface height, and wind speed from satellite altimetry continues to be challenging in the coastal zone because the received radar echoes exhibit significant interference from strongly reflective targets such as sandbanks, sheltered bays, ships etc. Fully focused...journal article 2023
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de Graaf, Miranda (author), Langeveld, J.G. (author), Post, Johan (author), Carrizosa, Christian (author), Franz, Eelco (author), Izquierdo-Lara, Ray W. (author), Elsinga, Goffe (author), Heijnen, Leo (author), Medema, G.J. (author)Despite high vaccination rates in the Netherlands, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to circulate. Longitudinal sewage surveillance was implemented along with the notification of cases as two parts of the surveillance pyramid to validate the use of sewage for surveillance, as an early warning tool, and to...journal article 2023
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Li, Yuanhao (author), Lopez Dekker, F.J. (author), Prats-Iraola, Pau (author)Simultaneous multiangle spaceborne synthetic aperture radar (SAR) can provide spatially diverse SAR images of the same scene without time lags. Through differential SAR interferometry (D-InSAR), the system can extract accurate multidimensional deformations from the mixing differential tropospheric delay (DTD), which generally distorts...journal article 2023
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Chekkala, Aashlesha (author), Atasoy, M. (author), Williams, Cecilia (author), Cetecioglu, Zeynep (author)An approach based on wastewater epidemiology can be used to monitor the COVID-19 pandemic by assessing the gene copy number of SARS-CoV-2 in wastewater. In the present study, we statistically analyzed such data from six inlets of three wastewater treatment plants, covering six regions of Stockholm, Sweden, collected over an approximate year...journal article 2023
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Giardina, Giorgia (author), Macchiarulo, V. (author), Foroughnia, Fatemeh (author), Jones, Joshua N. (author), Whitworth, Michael R.Z. (author), Voelker, Brandon (author), Milillo, Pietro (author), Penney, Camilla (author), Adams, Keith (author), Kijewski-Correa, Tracy (author)Remote reconnaissance missions are promising solutions for the assessment of earthquake-induced structural damage and cascading geological hazards. Space-borne remote sensing can complement in-field missions when safety and accessibility concerns limit post-earthquake operations on the ground. However, the implementation of remote sensing...journal article 2023
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Naughton, Colleen C. (author), Roman, Fernando A. (author), Alvarado, Ana Grace F. (author), Tariqi, Arianna Q. (author), Deeming, Matthew A. (author), Kadonsky, Krystin F. (author), Bibby, Kyle (author), Bivins, Aaron (author), Medema, G.J. (author)A year since the declaration of the global coronavirus disease 2019 (COVID-19) pandemic, there were over 110 million cases and 2.5 million deaths. Learning from methods to track community spread of other viruses such as poliovirus, environmental virologists and those in the wastewater-based epidemiology (WBE) field quickly adapted their...journal article 2023
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Jonker, Lotte (author), Linde, Kimberly J. (author), de Boer, Annemarijn R. (author), Ding, Er (author), Zhang, D. (author), de Hoog, M.L.A. (author), Herfst, Sander (author), Heederik, Dick (author), Bluyssen, P.M. (author)Introduction: Our aim was to gain insight into the effect of COVID-19 measures on SARS-CoV-2 incidence in secondary schools and the association with classroom CO <sub>2</sub> concentration and airborne contamination. Methods: Between October 2020—June 2021, 18 schools weekly reported SARS-CoV-2 incidence and completed surveys on school...journal article 2023
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Nikaein, T. (author), Lopez Dekker, F.J. (author), Steele-Dunne, S.C. (author), Kumar, V. (author), Huber, M. (author)In this article, our aim is to estimate synthetic aperture radar (SAR) observables, such as backscatter in VV and VH polarizations, as well as the VH/VV ratio, cross ratio, and interferometric coherence in VV, from agricultural fields. In this study, we use the decision support system for agrotechnology transfer (DSSAT) crop-growth simulation...journal article 2023
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O’Driscoll, Owen (author), Mouche, Alexis (author), Chapron, Bertrand (author), Kleinherenbrink, M. (author), Lopez Dekker, F.J. (author)Two air-sea interaction quantification methods are employed on synthetic aperture radar (SAR) scenes containing atmospheric-turbulence signatures. Quantification performance is assessed on Obukhov length L, an atmospheric surface-layer stability metric. The first method correlates spectral energy at specific turbulence-spectrum wavelengths...journal article 2023
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Zehnder, Calvin (author), Béen, Frederic (author), Vojinovic, Zoran (author), Savic, Dragan (author), Torres, Arlex Sanchez (author), Mark, Ole (author), Zlatanovic, L. (author), Abebe, Y.A. (author)Wastewater-based epidemiology (WBE) has been proven to be a useful tool in monitoring public health-related issues such as drug use, and disease. By sampling wastewater and applying WBE methods, wastewater-detectable pathogens such as viruses can be cheaply and effectively monitored, tracking people who might be missed or under-represented in...journal article 2023
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Kiene, G. (author), Overwater, R.W.J. (author), Catania, Alessandro (author), Gunaputi Sreenivasulu, A.M. (author), Bruschi, Paolo (author), Charbon-Iwasaki-Charbon, E. (author), Babaie, M. (author), Sebastiano, F. (author)This article presents a two-times interleaved, loop-unrolled SAR analog-to-digital converter (ADC) operational from 300 down to 4.2 K. The 6-8-bit resolution and the sampling speed up to 1 GS/s are targeted at digitizing the multi-channel frequency-multiplexed input in a spin-qubit reflectometry readout for quantum computing. To optimize the...journal article 2023
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Izquierdo-Lara, Ray W. (author), Heijnen, Leo (author), Oude Munnink, Bas B. (author), Schapendonk, Claudia M.E. (author), Elsinga, Goffe (author), Langeveld, J.G. (author), Post, Johan (author), Prasad, Divyae K. (author), Medema, G.J. (author)Monitoring of SARS-CoV-2 in wastewater (WW) is a promising tool for epidemiological surveillance, correlating not only viral RNA levels with the infection dynamics within the population, but also to viral diversity. However, the complex mixture of viral lineages in WW samples makes tracking of specific variants or lineages circulating in the...journal article 2023
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Mehravar, Soroosh (author), Razavi-Termeh, Seyed Vahid (author), Moghimi, Armin (author), Ranjgar, Babak (author), Foroughnia, Fatemeh (author), Amani, Meisam (author)Flood has long been known as one of the most catastrophic natural hazards worldwide. Mapping flood-prone areas is an important part of flood disaster management. In this study, a flood susceptibility mapping framework was developed based on a novel integration of nature-inspired algorithms into support vector regression (SVR). To this end,...journal article 2023