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Mirmohammadian, Farinaz (author), Asgari, Jamal (author), Verhagen, S. (author), Amiri Simkooei, A. (author)
With the advancement of multi-constellation and multi-frequency global navigation satellite systems (GNSSs), more observations are available for high precision positioning applications. Although there is a lot of progress in the GNSS world, achieving realistic precision of the solution (neither too optimistic nor too pessimistic) is still an...
journal article 2022
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Deng, Q. (author), Santos, Bruno F. (author), Verhagen, W.J.C. (author)
Modern aircraft have thousands of parts, systems, and components that need to be recurrently inspected or replaced. To keep the fleet airworthy, maintenance planners have to schedule the maintenance checks for each aircraft and the associated tasks. In practice, these two complex problems are solved following the experience of planners,...
journal article 2021
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Verhagen, J.D. (author), van der Zaag, P. (author), Abraham, E. (author)
Integrating the planning of a multi-reservoir system in nexus with agricultural and electricity infrastructure could alleviate security concerns for these resources in regions where demand is growing while water and land scarcity are exacerbated by climate change and anthropogenic pressures. This study focuses on the benefits of resource...
journal article 2021
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Verhagen, R.S. (author), Neerincx, M.A. (author), Tielman, M.L. (author)
Because of recent and rapid developments in Artificial Intelligence (AI), humans and AI-systems increasingly work together in human-agent teams. However, in order to effectively leverage the capabilities of both, AI-systems need to be understandable to their human teammates. The branch of eXplainable AI (XAI) aspires to make AI-systems more...
conference paper 2021
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Koornneef, H. (author), Verhagen, W.J.C. (author), Curran, R. (author)
Aircraft dispatch involves determining the optimal dispatch option when an aircraft experiences an unexpected failure. Currently, maintenance technicians at the apron have limited access to support information and finding the right information in extensive maintenance manuals is a time-consuming task, often leading to technically induced...
journal article 2021
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Arora, S. (author), Bauer, T.A. (author), Barczyk, René (author), Verhagen, Ewold (author), Kuipers, L. (author)
Topological on-chip photonics based on tailored photonic crystals (PhCs) that emulate quantum valley-Hall effects has recently gained widespread interest owing to its promise of robust unidirectional transport of classical and quantum information. We present a direct quantitative evaluation of topological photonic edge eigenstates and their...
journal article 2021
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Gijsen, F.J.H. (author), Vis, Bas (author), Barrett, Hilary E. (author), Zadpoor, A.A. (author), Verhagen, Hence J. (author), Bos, Daniel (author), van der Steen, A.F.W. (author), Akyildiz, A.C. (author)
Objective: Atherosclerotic plaque rupture in carotid arteries is a major source of cerebrovascular events. Calcifications are highly prevalent in carotid plaques, but their role in plaque rupture remains poorly understood. This work studied the morphometric features of calcifications in carotid plaques and their effect on the stress...
journal article 2021
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Ma, H. (author), Psychas, D.V. (author), Xing, Xuhuang (author), Zhao, Qile (author), Verhagen, S. (author), Liu, Xianglin (author)
The tropospheric delay is one of many error sources that affect the Global Navigation Satellite System (GNSS) positioning solutions. The widely used troposphere models assume a homogeneous atmosphere so that only the zenith delay needs to be determined and is mapped through an elevation-dependent mapping function. This procedure is to reduce...
journal article 2021
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Teunissen, P.J.G. (author), Massarweh, L. (author), Verhagen, S. (author)
In this contribution, we extend the principle of integer bootstrapping (IB) to a vectorial form (VIB). The mathematical definition of the class of VIB-estimators is introduced together with their pull-in regions and other properties such as probability bounds and success rate approximations. The vectorial formulation allows sequential block...
journal article 2021
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Sprecher, B. (author), Verhagen, T. (author), Sauer, Marijn Louise (author), Baars, Michel (author), Heintz, John L. (author), Fishman, Tomer (author)
Re-use and recycling in the construction sector is essential to keep resource use in check. Data availability about the material contents of buildings is significant challenge for planning future re-use potentials. Compiling material intensity (MI) data is time and resource intensive. Often studies end up with only a handful of datapoints. In...
journal article 2021
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Verhagen, M.P. (author), de Reuver, G.A. (author), Bouwman, W.A.G.A. (author)
Business models (BMs) help firms to translate abstract strategic decisions into their daily operations. Because BMs mediate between strategy and operations, BM innovation involves both high-level strategic experiments and low-level implementation into operations and technologies. However, most existing empirical studies regarding BM innovation...
journal article 2021
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Van den Berghe, K.B.J. (author), Verhagen, Teun (author)
Increasingly, space for remanufacturing is seen as the most valuable resource to achieve circular economy (CE) policy goals, in particular for cities. However, in many cities, industrial urban areas are increasingly subject of – mostly circular designed - residential redevelopment. The proposition of this paper is that these diminishing...
journal article 2021
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Bieber, M.T. (author), Verhagen, Wim J.C. (author), Santos, Bruno F. (author)
SUMMARY & CONCLUSIONSDuring flights aircraft continuously collect data regarding operations, health status and system condition. Data-driven approaches typically applied to system specific sensor data provide a way to predict failures of aircraft systems. However, it is believed that some systems deteriorate faster when subjected to...
conference paper 2021
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Van der Heiden, K. (author), Barrett, H. E. (author), van Gaalen, K.C. (author), Krenning, B. J. (author), Beekman, F.J. (author), Verhagen, H. J.M. (author), Norenberg, J. P. (author), de Jong, M. (author), Gijsen, F.J.H. (author)
Background: Calcification and inflammation are atherosclerotic plaque compositional biomarkers that have both been linked to stroke risk. The aim of this study was to evaluate their co-existing prevalence in human carotid plaques with respect to plaque phenotype to determine the value of hybrid imaging for the detection of these biomarkers....
journal article 2021
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Ma, H. (author), Verhagen, S. (author), Psychas, D.V. (author), Monico, João Francisco Galera (author), Marques, Haroldo Antonio (author)
The technology of integer ambiguity resolution-enabled precise-point-positioning (also referred to as PPP-AR) has been proven capable of providing comparable accuracy, efficiency, and productivity to long-baseline real-time kinematic positioning (RTK) during the last decade. Commercial PPP-AR services have been provided by different...
journal article 2021
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Haji Aghajany, S. (author), Amerian, Yazdan (author), Verhagen, S. (author), Rohm, Witold (author), Schuh, Harald (author)
Tropospheric wet delay, the main source of which is water vapor, is one of the major factors affecting the accuracy of positioning techniques using microwave. Tropospheric tomography is a powerful method to reconstruct the water vapor content in four-dimensional (4D) space. This paper studies the effect of using function-based and voxel-based...
journal article 2021
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Psychas, D.V. (author), Teunissen, P.J.G. (author), Verhagen, S. (author)
The single-receiver integer ambiguity resolution-enabled variant of precise point positioning (PPP), namely PPP-RTK, has proven to be crucial in reducing the long convergence time of PPP solutions through the recovery of the integerness of the user-ambiguities. The proliferation of global navigation satellite systems (GNSS) supports various...
journal article 2021
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Toodesh, R. (author), Verhagen, S. (author), Dagla, Anastasia (author)
Guaranteeing safety of navigation within the Netherlands Continental Shelf (NCS), while efficiently using its ocean mapping resources, is a key task of Netherlands Hydrographic Service (NLHS) and Rijkswaterstaat (RWS). Resurvey frequencies depend on seafloor dynamics and the aim of this research is to model the seafloor dynamics to predict...
journal article 2021
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Bieber, M.T. (author), Verhagen, W.J.C. (author), Santos, Bruno F. (author)
Prognostics for condition-based maintenance does not only consist of prognostic algorithms but also involves steps such as data pre-processing, feature extraction, and feature selection, all of which contribute to the quality of the remaining useful life estimation. This process requires a lot of expertise and technical knowledge, which for many...
conference paper 2021
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Massart, Philippe F.R. (author), Dhanisetty, V.S.V. (author), Kassapoglou, C. (author), Verhagen, W.J.C. (author), Curran, R. (author)
This paper proposes an analytical model that uses historical damage dimension data to deduce physical impactor characteristics (size and energy) that has caused a certain resulting damage. Maintenance tasks occur in operations due to impact, however the source of the damage caused in the event remains in most cases unknown. Consequently, by...
journal article 2020
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