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Parappurath, Nikhil (author), Alpeggiani, F. (author), Kuipers, L. (author), Verhagen, Ewold (author)Topological protection in photonics offers new prospects for guiding and manipulating classical and quantum information. The mechanism of spin-orbit coupling promises the emergence of edge states that are helical, exhibiting unidirectional propagation that is topologically protected against back scattering. We directly observe the topological...journal article 2020
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Zhao, X. (author), Verhagen, W.J.C. (author), Curran, R. (author)The present study proposes an economic indicator to support the evaluation of aircraft End of Life (EoL) strategies in view of the increasing demand with regards to aircraft decommissioning. This indicator can be used to evaluate the economic performance and to facilitate the trade-off studies among different strategies. First, Disposal and...journal article 2020
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Squazzoni, Flaminio (author), Polhillb, J. Gareth (author), Edmonds, Bruce (author), Ahrweiler, Petra (author), Antosz, Patrycja (author), Scholz, G. (author), Chappin, E.J.L. (author), Borit, Melania (author), Verhagen, Harko (author), Giardini, Francesca (author), Gilbert, Nigel (author)The COVID-19 pandemic is causing a dramatic loss of lives worldwide, challenging the sustainability of our health care systems, threatening economic meltdown, and putting pressure on the mental health of individuals (due to social distancing and lock-down measures). The pandemic is also posing severe challenges to the scientific community, with...journal article 2020
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Ma, H. (author), Verhagen, S. (author)Precise point positioning (PPP) is one of the well-known applications of Global Navigation Satellite System (GNSS) and provides precise positioning solutions using accurate satellite orbit and clock products. The tropospheric delay due to the neutral atmosphere for microwave signals is one of the main sources of measurement error in PPP. As...journal article 2020
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Haji Aghajany, S. (author), Amerian, Yazdan (author), Verhagen, S. (author)Tropospheric tomography is one of the most important techniques to reconstruct three-dimensional (3D) images of the tropospheric water vapor fields using a local GNSS network. In the conventional tropospheric tomography method, called voxel-based tropospheric tomography, the 3D space is divided into many voxels and the amount of water vapor...journal article 2020
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Dignum, Frank (author), Dignum, Virginia (author), Davidsson, Paul (author), Ghorbani, Amineh (author), van der Hurk, Mijke (author), Jensen, Maarten (author), Kammler, Christian (author), Lorig, Fabian (author), Ludescher, Luis Gustavo (author), Melchior, Alexander (author), Mellema, René (author), Pastrav, Cezara (author), Vanhee, Loïs (author), Verhagen, Harko (author)During the COVID-19 crisis there have been many difficult decisions governments and other decision makers had to make. E.g. do we go for a total lock down or keep schools open? How many people and which people should be tested? Although there are many good models from e.g. epidemiologists on the spread of the virus under certain conditions,...journal article 2020
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Psychas, D.V. (author), Verhagen, S. (author)The long convergence time required to achieve high-precision position solutions with integer ambiguity resolution-enabled precise point positioning (PPP-RTK) is driven by the presence of ionospheric delays. When precise real-time ionospheric information is available and properly applied, it can strengthen the underlying model and substantially...journal article 2020
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Psychas, D.V. (author), Verhagen, S. (author), Teunissen, P.J.G. (author)A single-receiver integer ambiguity resolution-enabled precise point positioning (PPP-RTK) user experiences a long convergence time when the rather weak single-constellation dual-frequency ionosphere-float model is used. Nowadays, the rapid development of Global Navigation Satellite Systems (GNSS) provides a multitude of available satellites...journal article 2020
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Vink, J. (author), Santos, Bruno F. (author), Verhagen, W.J.C. (author), Medeiros, I. (author), Filho, R. (author)This paper presents a new approach for solving the recovery of the airline schedule when disruptions have occurred. The goal is to develop an operational tool that provides the airline with a solution in less than one minute. The proposed recovery model uses a heuristic that iteratively solves selections of the airline's fleet in order to...journal article 2020
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Sidhu, Arshdeep (author), Grosbart, Małgorzata (author), Sanchez González, H. (author), Verhagen, Bram (author), van der Zon, Nick L.L. (author), Ristić, Dejan (author), van Rossum-Fikkert, Sarah E. (author), Wyman, Claire (author)BRCA2 is a key breast cancer associated protein that is predicted to have interspersed regions of intrinsic disorder. Intrinsic disorder coupled with large size likely allows BRCA2 to sample a broad range of conformational space. We expect that the resulting dynamic arrangements of BRCA2 domains are a functionally important aspect of its role...journal article 2020
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Ma, H. (author), Zhao, Qile (author), Verhagen, S. (author), Psychas, D.V. (author), Liu, Xianglin (author)The benefits of an increased number of global navigation satellite systems (GNSS) in space have been confirmed for the robustness and convergence time of standard precise point positioning (PPP) solutions, as well as improved accuracy when (most of) the ambiguities are fixed. Yet, it is still worthwhile to investigate fast and high-precision...journal article 2020
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Li, R. (author), Verhagen, W.J.C. (author), Curran, R. (author)Remaining useful life (RUL) prediction is crucial for the implementation of Prognostics and Health Management (PHM) systems, enabling application of predictive maintenance strategies for critical systems (e.g. in aviation, power, railway). Existing literature addresses aspects of data-driven prognostic approaches, with a predominant focus on...conference paper 2019
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Verhagen, Mathijs (author)Cancer metastasis, the spread of cancer to distant organs, is the major cause of cancerrelated mortality. Hence, understanding the mechanisms underlying cancer metastasis is crucial to improve clinical interventions. Despite intensive efforts, the driving mechanisms remain ill-understood due to the difficulties posed by studying the different...master thesis 2019
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- Psychas, D.V. (author), Verhagen, S. (author), Liu, Xianglin (author) abstract 2019
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- Psychas, D.V. (author), Verhagen, S. (author), Liu, Xianglin (author) poster 2019
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- Schiereck, G.J. (author), Verhagen, H.J. (author) book 2019
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Verhagen, H.J. (author)In this paper, protection options for a high-value, industrial area along the coast of West Bengal (India) are investigated. The options are designed to protect against cyclone surges with a probability of 1/100 per year. Two alternatives are compared, a classical solution of a dike with a revetment and a solution with a mangrove belt in...journal article 2019
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Vossen, David M. (author), Verhagen, Caroline V.M. (author), van der Heijden, Martijn (author), Essers, Paul B.M. (author), Bartelink, Harry (author), Verheij, Marcel (author), Wessels, L.F.A. (author), van den Brekel, Michiel W.M. (author), Vens, Conchita (author)About half of advanced stage head and neck squamous cell carcinoma (HNSCC) patients can be cured by chemoradiotherapy. Patient outcome may be partially determined by the genetic alterations in HNSCC, rendering these alterations promising candidate prognostic factors and/or therapeutic targets. However, their relevance in patient outcome...journal article 2019
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Wognum, Nel (author), Bil, Cees (author), Elgh, Fredrik (author), Peruzzini, Margherita (author), Stjepandić, Josip (author), Verhagen, W.J.C. (author)Transdisciplinary processes have been the subject of research since several decades already. Transdisciplinary processes are aimed at solving ill-defined and socially relevant problems. Many researchers have studied transdisciplinary processes and have tried to understand the essentials of transdisciplinarity. Many engineering problems can be...journal article 2019
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Psychas, D.V. (author), Verhagen, S. (author), Liu, X. (author), Memarzadeh, Y. (author), Visser, H. (author)This paper presents an analysis of the ionospheric corrections required to get a significant improvement in PPP-RTK performance. The main aim was to determine the improvement in the position precision and Time-To-First-Fix in the PPP-RTK user side using ionospheric corrections computed from a network. The study consists of two main steps. The...journal article 2019