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Li, H. (author), Ribeiro, M.J. (author), Santos, Bruno F. (author), Tseremoglou, I. (author)Aircraft maintenance scheduling is a focus point for airlines. Maintenance is essential to ensure the airworthiness of aircraft, but it comes at the cost of rendering them unavailable for operations. In current operations, aircraft maintenance scheduling must often be updated to include time for non-routine and non-schedule tasks. These non...conference paper 2024
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Ribeiro, M.J. (author), Tseremoglou, I. (author), Santos, Bruno F. (author)Despite its success in various research domains, Reinforcement Learning (RL) faces challenges in its application to air transport operations due to the rigorous certification standards of the aviation industry. The existing regulatory framework fails to provide adequate, acceptable means of compliance for RL applications, and thus, there is no...conference paper 2024
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Hoepers, Taiane Regina (author), Leithold, Juliana (author), Monteiro, Michel Marques (author), Corzo Perez, Gerald A. (author), Fernandes, Cristovão V. Scapulatempo (author), Zevenbergen, C. (author), Santos, Daniel Costa dos (author)In response to pressing global challenges like climate change, rapid population growth, and an urgent need for sustainable infrastructure, cities face an immediate and crucial necessity to transition swiftly toward an integrated approach to managing urban water resources. This shift is not merely an option but an imperative, driven by the...journal article 2024
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Santos, Janaina S. (author), Fereidooni, Mohammad (author), Márquez, Victor (author), Paz-López, Christian V. (author), Villanueva, Martin S. (author), Buijnsters, J.G. (author), Praserthdam, Supareak (author), Praserthdam, Piyasan (author)This study assessed the photoactivity of amorphous and crystalline TiO<sub>2</sub> nanotube arrays (TNA) films in gas phase CO<sub>2</sub> reduction. The TNA photocatalysts were fabricated by titanium anodization and submitted to an annealing treatment for crystallization and/or cathodic reduction to introduce Ti<sup>3+</sup> and oxygen...journal article 2024
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Llasag Rosero, Raúl (author), Silva, Catarina (author), Ribeiro, Bernardete (author), Santos, Bruno F. (author)Artificial Intelligence (AI) is transforming the future of industries by introducing new paradigms. To address data privacy and other challenges of decentralization, research has focused on Federated Learning (FL), which combines distributed Machine Learning (ML) models from multiple parties without exchanging confidential information....journal article 2024
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Bieber, M.T. (author), Verhagen, W.J.C. (author), Santos, Bruno F. (author)Over the past years, advanced prognostic models and approaches have been developed. Most existing approaches are tailored to one specific system and cannot adaptively be used on different systems. This can lead to years of research and expertise being put into implementing prognostic models without the capacity to predict system failures,...journal article 2024
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Tseremoglou, I. (author), Santos, Bruno F. (author)In the Condition-Based Maintenance (CBM) context, the definition of optimal maintenance plans for an aircraft fleet depends on an efficient integration of : (i) the probabilistic predictions of the health condition of the components and (ii) the stochastic arrival of the corrective maintenance tasks, together with consideration of the...journal article 2024
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Timperley, Christopher S. (author), van der Hoorn, G.A. (author), Santos, André (author), Deshpande, Harshavardhan (author), Wąsowski, Andrzej (author)As robotic systems such as autonomous cars and delivery drones assume greater roles and responsibilities within society, the likelihood and impact of catastrophic software failure within those systems is increased. To aid researchers in the development of new methods to measure and assure the safety and quality of robotics software, we...journal article 2024
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Santos, Gonçalo Gonçalves Duarte (author), Birolini, Sebastian (author), Correia, Gonçalo (author)Shared automated vehicles are expected to be part of the supply of transportation systems in the future. Parallel to this evolution, there is the rapid penetration of battery electric vehicles (BEVs). The limitations in battery capacity and charging speed of BEVs can influence the planning and operation of shared automated electric vehicle (SAEV...journal article 2023
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Tseremoglou, I. (author), van Kessel, Paul J. (author), Santos, Bruno F. (author)Condition-based maintenance (CBM) scheduling of an aircraft fleet in a disruptive environment while considering health prognostics for a set of systems is a very complex combinatorial problem, which is becoming more challenging in light of the uncertainty included in health prognostics. This type of problem falls under the broad category of...journal article 2023
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Geursen, Isaak L. (author), Santos, Bruno F. (author), Yorke-Smith, N. (author)Current state-of-the-art airline planning models face computational limitations, restricting the operational applicability to problems of representative sizes. This is particularly the case when considering the uncertainty necessarily associated with the long-term plan of an aircraft fleet. Considering the growing interest in the application of...journal article 2023
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Noorafza, M. (author), Santos, Bruno F. (author), Sharpanskykh, Alexei (author), Zengerling, Zarah L. (author), Weder, Christian M. (author), Linke, Florian (author), Grewe, V. (author)The aviation industry has set an ambitious goal of reducing its climate impacts. Accordingly, airlines must balance their plans according to this goal with financial considerations. We developed a multi-objective framework to facilitate climate-aware network design by incorporating the objective to minimise the flight average temperature...journal article 2023
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Proesmans, P. (author), Morlupo, F. (author), Santos, Bruno F. (author), Vos, Roelof (author)To reduce the climate impact of aviation, researchers are studying the replacement of fossil kerosene with liquid hydrogen and/or drop-in sustainable aviation fuel (SAF). These fuels can bring significant reductions in CO2 emissions and can offer savings in terms of non-CO2 climate effects. In addition, tube-and-wing aircraft can be optimized to...conference paper 2023
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Hoogreef, M.F.M. (author), Zuijderwijk, N.R. (author), Scheers, E. (author), Proesmans, P. (author), Santos, Bruno F. (author)Electrification of aviation is regarded as one of the means to make aircraft operations less polluting and to have lower climate impact. Yet, air transportation's environmental impact depends on power train technologies and novel designs and aircraft operations within airline networks. Fully- or hybrid-electric aircraft may enter existing air...conference paper 2023
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Hoogreef, M.F.M. (author), Bonnin, V.O. (author), Santos, Bruno F. (author), Morlupo, F. (author), Wahler, N.F.M. (author), Elham, Ali (author)The objective of the EU-funded research project CHYLA (Credible HYbrid eLectric Aircraft) was to identify opportunities or limitations/challenges for the applications of key radical hybrid-electric technologies and areas suitable for scaling them over different aircraft classes. This was done using a ombination of conceptual aircraft design...conference paper 2023
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Santos, Janaina S. (author), Márquez, Victor (author), Buijnsters, J.G. (author), Praserthdam, Supareak (author), Praserthdam, Piyasan (author)This study presents environmentally friendly and low-cost synthetic routes to produce antimicrobial coatings over 5052 Al alloy based on plasma electrolytic oxidation (PEO) technology. Two methodologies were explored: the decoration with copper and anodic doping with copper ions. The porous oxide layers produced in silicate media presented...journal article 2023
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Boix-Constant, Carla (author), Jenkins, Sarah (author), Rama-Eiroa, Ricardo (author), Santos, Elton J.G. (author), Mañas Valero, S. (author), Coronado, Eugenio (author)The authors present magnetotransport measurements to demonstrate multistep magnetization switching in orthogonally twisted CrSBr ferromagnetic monolayers.journal article 2023
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Estanqueiro, Ana (author), Strbac, Goran (author), Chrysanthopoulos, Nikolaos (author), Santos, Gabriel (author), Johanndeiter, Silke (author), Algarvio, Hugo (author), Syse, Helleik (author), Sperber, Evelyn (author), Wang, Ni (author), Sanchez Jimenez, I.J. (author), Qiu, Dawei (author), Vale, Zita (author), Nienhaus, Kristina (author), Kochems, Johannes (author), Schimeczek, Christoph (author), Sijm, Jos (author), De Vries, Laurens (author), Lopes, Fernando (author), Couto, António (author)Developing innovative electricity market designs to facilitate a sustainable transition to (near) 100% renewable power systems while meeting societal needs is a crucial and actual topic of research. This article presents preliminary key findings from the H2020 European project TradeRES, addressing this critical topic. The project uses agent...journal article 2023
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Abbasi, H. (author), Lauwerends, Lorraine J. (author), Bakker Schut, Tom C. (author), Santos, Inês P. (author), Caspers, Peter J. (author), Hardillo, Jose A.U. (author), Koljenović, Senada (author), Vahrmeijer, Alexander L. (author), Baatenburg de Jong, Robert J. (author)Near-infrared (NIR) fluorescence imaging using exogenous fluorescent agents provides whole-field images in real-time to assist the surgeon in the excision of a tumor. Although the method has high sensitivity, the specificity can sometimes be lower than expected. Raman spectroscopy can detect tumors with high specificity. Therefore, a...journal article 2023
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Bieber, M.T. (author), Verhagen, W.J.C. (author), Cosson, Fabrice (author), Santos, Bruno F. (author)Spacecraft systems collect health-related data continuously, which can give an indication of the systems’ health status. While they rarely occur, the repercussions of such system anomalies, faults, or failures can be severe, safety-critical and costly. Therefore, the data are used to anticipate any kind of anomalous behaviour. Typically this is...journal article 2023