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Affichage de 11 à 20 sur 16273

Thèse

Passive Monitoring Approaches for Rail Structural Health Assessment, Approches de surveillance passive pour l’évaluation de l’état de santé structurel des rails

Elissa Akiki

Structural Health Monitoring (SHM) based on ultrasonic guided waves has emerged as a promising solution for the continuous monitoring of railway infrastructures. However, most conventional SHM systems rely on active interrogation schemes requiring external excitation sources, synchronization..., La surveillance de l’état structural (SHM) basée sur les ondes guidées ultrasonores constitue une approche prometteuse pour le suivi continu des infrastructures ferroviaires. Toutefois, les systèmes conventionnels de SHM reposent majoritairement sur des méthodes actives nécessitant des sources d’...

Mechanics of materials [physics.class-ph]. Université Polytechnique Hauts de France; Institut national des sciences appliquées Hauts-de-France, 2026. English. ⟨NNT : 2026UPHF0032⟩. ⟨tel-05666219⟩

Thèse

Localisation interférométrique au sein d’un réseau de capteurs évoluant dans un environnement industriel confiné, Interferometric location within a sensor network operating in a confined industrial environment

Thomas Steve NKOLO BEKONO

La localisation précise d’objets ou des personnes représente un enjeu important dans le contexte de l’usine du futur. Avoir une information de position fiable permet d’optimiser les flux logistiques, de faciliter la coordination des systèmes automatisés, d’améliorer la traçabilité des équipements..., The precise localisation of objects or people is a key challenge in the context of the factory of the future. Reliable position data enables the optimisation of logistics flows, facilitates the coordination of automated systems, improves the traceability of equipment and enhances operator safety....

Electronique. Université Polytechnique Hauts de France; Institut national des sciences appliquées Hauts-de-France, 2026. Français. ⟨NNT : 2026UPHF0035⟩. ⟨tel-05666298⟩

Article dans une revue

Transversal at Ten – Historical and Historiographical Reflections from Within, Transversal at Ten

Raffaele Pisano

This commemorative contribution reflects on the intellectual trajectory and historiographical significance of Transversal since its foundation in 2016. Written from the perspective of a longstanding collaborator, Editorial Board member, Associate Editor, author, and Guest Editor, it situates the...

Transversal: International Journal for the Historiography of Science, 2026, 20, pp.1-10. ⟨10.24117/2526-2270.2026.i20.02⟩. ⟨hal-05616965⟩

Thèse

Contribution au développement de capteurs ultrasonores SAW sur base de substrats piézoélectriques de type vitrocéramique pour des mesures à haute température, Contribution to the development of SAW ultrasonic sensors based on glass-ceramic piezoelectric substrates for high-temperature measurements.

Oussama Zwein

Cette thèse s’inscrit dans le développement de capteurs ultrasonores à ondes acoustiques de surface (Surface Acoustic Wave, SAW) destinés aux environnements industriels sévères. Elle vise à démontrer la faisabilité de dispositifs SAW réalisés à partir de substrats vitrocéramiques polaires à base de..., This PhD thesis is part of the development of ultrasonic Surface Acoustic Wave (SAW) sensors intended for harsh industrial environments. It aims to demonstrate the feasibility of SAW devices fabricated on polar glass-ceramic substrates based on fresnoite (Sr₂TiSi₂O₈ – STS), capable of operating at...

Physique [physics]. Université Polytechnique Hauts-de-France; Cotutelle avec l'université "UMONS" (BELGIQUE), 2026. Français. ⟨NNT : ⟩. ⟨tel-05666266⟩

Pré-publication, Document de travail

Towards Polyoxometalate Nanoelectronics

Dominique Vuillaume, Anna Proust

Polyoxometalates form a large family of molecular oxide clusters of the early transition metals with unique and tunable properties (multi-redox, thermal and chemical robustness, magnetic). We review more than 30 years of experimental research on the electron transport properties of polyoxometalates...

2026. ⟨hal-05491371v2⟩

Communication dans un congrès

A Novel Time-Frequency Approach for Frequency-Hopping Signal Blind Estimation

Ali Khalaf, Arthur Louchart, Sébastien Houcke, Ray Abdo, Laurent Clavier

<div><p>The estimation of frequency-hopping spread spectrum (FHSS) signals is essential for the analysis and detection of communications in dynamic and challenging environments. This paper presents a novel approach based on time-frequency analysis using a two-dimensional Fourier...

2026 IEEE 103rd Vehicular Technology Conference (VTC2026-Spring), IEEE, Jun 2026, Nice, France. ⟨hal-05587432⟩

Communication dans un congrès

Energy-Efficient RIS-aided Uplink Cell-Free Massive MIMO-NOMA

Mohamad Ousseily, Joumana Farah, Matthieu Crussière, Joseph Doumit, Charbel Abdel Nour, Eric Pierre Simon

<div><p>Cell-free massive MIMO (CF-mMIMO) promises uniform coverage for beyond-5G networks but faces critical energy efficiency (EE) challenges in dense and uncoordinated Internet-of-Things deployments. This paper addresses uncoordinated uplink transmission where devices transmit...

IEEE VTC Spring 2026, Jun 2026, Nice, France. ⟨hal-05589406⟩

Communication dans un congrès

Superradiance and static Bell tests in pilot-wave hydrodynamics

Konstantinos Papatryfonos, Louis Vervoort, Mélanie Ruelle, Corentin Bourdiol, André Nachbin, Valeri Frumkin, Matthieu Labousse, John W. M. Bush

Since its discovery in 2005, the hydrodynamic pilot-wave system has emerged as a classical platform for exploring aspects of wave–particle duality. In these systems, bouncing droplets or droplets emitted from hydrodynamic cavities propagate on a vertically vibrating fluid bath. These droplets,...

Quantum Information and Probability: from Foundations to Engineering (QIP26), Andrei Khrennikov and Linnaeus University, Jun 2026, Vaxjo, Sweden. ⟨hal-05601048⟩

Communication dans un congrès

Towards Green Biomedical Actuation: Current State and Emerging Perspectives on Functional Materials for DDS

Martyna Myszograj, Michal Rychlik, Sofiane Ghenna, Eric Cattan

The rapid development of biomedical drug delivery systems (DDS) has driven increasing interest in functional materials capable of enabling controlled, targeted and stimuli-responsive therapeutic release. This development has the potential to optimize spatial and temporal control over dosing,...

5th European Congress on Applied Chemistry, Jun 2026, Lisbon, Portugal. ⟨hal-05663699⟩

Communication dans un congrès

Aerodynamics force estimates from flow field measurements in insect-inspired vibrating wings

Alexandre Dallot, Vincent Stin, Marguerite de La Bigne, Eric Cattan, Sébastien Grondel, Sofiane Ghenna, Olivier Thomas, Benjamin Thiria, Ramiro Godoy-Diana

This study investigates a method to estimate aerodynamic force production of a resonant, twowinged Nano Air Vehicle (NAV) prototype using 2D particle image velocimetry (PIV) and a pressure calculation algorithm. The prototype, with a 7.4 mm chord length, is excited at a range of frequencies around...

DisCoVor 2026, the university of Edinburgh, Jun 2026, Edinburgh, United Kingdom. ⟨hal-05663690⟩