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TPUTrap: Hardware-Based USB Man-in-the-Middle Attack on Coral Edge TPU
No full textInternational audienceAI-based hardware accelerators, such as the Coral USB Accelerator, enable the use of AI in embedded systems without relying on the cloud, offering advantages like low latency, reduced power consumption, and enhanced privacy. It connects to the host via USB, which lacks encryption and authentication checks, raising security concerns in critical applications. This paper demonstrates a man-in-the-middle attack on the Coral USB Accelerator's USB interface, utilizing a Raspberry Pi 5 and a USB Proxy for real-time interception and manipulation of USB traffic. This approach successfully exfiltrated sensitive data and caused misclassification. Despite an added latency overhead, all attacks achieved 100% success, underscoring the need to address this security issue
Airbnb and Returns to Housing Capital: Evidence on Inequality from Administrative Data
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À propos de la loi no 2025-532 du 13 juin 2025 visant à sortir la France du piège du narcotrafic
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Microwave-assisted desorption of CO 2 from ethanolamine solvent in a porous hollow fiber membrane
No full textInternational audienceChemical absorption using amine-based solvents is perhaps the most mature technology currently available for CO₂ capture. However, its widespread deployment is hindered by design constraints and high operational costs. Recent research has focused on alternative approaches for gas absorption, such as the use of hollow fiber membranes (HFMs) as gas-liquid contactors, and microwave (MW) heating as an alternative energy source for solvent regeneration. This work aims to combine HFMs and MW heating to regenerate spent alkanolamine solvents at atmospheric condition. To this end, an experimental study was conducted in which a single porous hollow fiber membrane was placed inside a custom applicator providing a homogeneous MW field. The solvent was circulated through the lumen of the hollow fiber while being heated by MW irradiation. Desorption rates were evaluated using a two-factor design of experiments (DoE), with the solvent outlet temperature varying between 50 and 60°C, as well as the solvent and sweep gas flow rates. The desorption fluxes obtained ranged from 0.08 to 0.4 mmol.m -2 s -1 . Comparison of the desorption fluxes obtained with data from the literature showed that microwave regeneration was at least three times more efficient than the results of studies using vacuum regeneration, despite operating at a solvent temperature 10°C lower. In order to perform a comparative analysis with data from the literature using conventional membrane contactor heating and N2sweeping, the regression equation (DoE) was applied to estimate the lower limits of the desorption flux obtained under MW irradiation, at temperatures higher than those explored experimentally in this work. The extrapolated results predict MW regeneration performances equivalent to, or less than 60% of those of membrane desorption systems maintained in isothermal conditions, as reported in the literature. This study is intended to be complemented by a subsequent part dedicated to the development of a numerical model describing the tested HFM-MW desorption system.</div
Search for planetary-mass ultra-compact binaries using data from the first part of the LIGO--Virgo--KAGRA fourth observing run
No full textInternational audienceWe present a search for gravitational waves from inspiraling, planetary-mass ultra-compact binaries using data from the first part of the fourth observing run of LIGO, Virgo and KAGRA. Finding no evidence of such systems, we determine the maximum distance reach for such objects and their merger rate densities, independently of how they could have formed. Then, we identify classes of primordial black-hole mass distributions for which these rate limits can be translated into relevant constraints on the mass distribution of primordial black holes, assuming that they compose all of dark matter, in the mass range . Our constraints are consistent with existing microlensing results in the planetary-mass range, and provide a complementary probe to sub-solar mass objects
Analyse in situ du comportement thermomécanique de l'alliage 2139 sous MEB couplé à l'EBSD
No full textInternational audienceCette étude vise à analyser le comportement mécanique et l'évolution microstructurale de l'alliage d'aluminium 2139 lors de sollicitations thermomécaniques. Le projet est financé par Airbus Atlantic, afin de développer la gamme de fabrication de l'encadrement de pare-brise des avions de nouvelle génération. Une campagne d'essais de traction in situ a été menée dans un microscope électronique à balayage couplé à la diffraction d'électrons rétrodiffusés sur des éprouvettes prélevées sur le bloc brut de forte épaisseur, afin de quantifier et localiser la densité de dislocations géométriquement nécessaires au cours de la déformation. Ces données expérimentales multi-échelle sont une base cruciale dans la modélisation du comportement au fluage de l'alliage 2139.</div
Le rôle de la formation professionnelle continue dans la construction du marché de la transition écologique
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ICU-acquired infections and thrombo-embolic events in critically ill patients receiving platelet transfusion: a prospective multicenter observational study.
No full textInternational audienceBackground: Platelet transfusion is relatively common in patients hospitalized in intensive care units (ICU). Both ICU-acquired infections and thromboembolic events have been reported after platelet transfusion. We sought to explore risk-factors of these complications.Materials and methods: We conducted a ancillary analysis of a multicenter prospective observational study including critically ill patients who received at least one platelet transfusion in one of the 9 participating ICUs. Patients' characteristics were compared according to the occurrence of post platelet transfusion ICU-acquired infections (blood stream infections and ventilator-associated pneumonia) and thromboembolic events. Factors associated with those outcomes were assessed by univariable and multivariable Fine and Gray regression.Results: Of the 310 included patients, 64 patients (20.6%) and 14 patients (4.5%) experienced at least one ICU-acquired infection and a thromboembolic event after platelet transfusion, respectively. Fifty patients (78.1%) developed blood stream infection (BSI), 32 (50%) experienced ventilator associated pneumonia (VAP) and 18 (28.1%) had both VAP and BSI. Independent risk factors for post platelet transfusion ICU-acquired infection included a platelet count at ICU admission <109/L (protective) (subdistribution Harard Ratio (sHR) 0.52 95% CI [0.31-0.89] p=0.016), multiple platelet transfusion prior to infection occurrence (sHR 2.15 [1.25-3.71] p=0.005) and a Simplified Acute Physiology Score (SAPS) II>50 (sHR 3.67 [2.16-6.25] p<0.001). While, the unique variable independently associated with thrombotic event occurring after platelet transfusion in adjusted Fine-Gray regression was a SAPS II >50 (sHR 4.27 [1.18-15.39] p=0.027).Discussion: In this prospective multicenter study, the risk of hospital-acquired infection after platelet transfusion increased in patients receiving multiple platelet transfusions and with patient severity at ICU admission
Cahier documentaire : Les figurines gallo-romaines en terre cuite sur le territoire des Vénètes (Morbihan).: Inventaire par commune et par lieu-dit des figurines.
No full textCoarse-grained physics-based modelling for tape casting of fuel-electrode supports in Solid Oxide Cells
No full textInternational audienceOptimising the tape casting process for fabricating NiO/YSZ cermet-based fuel-electrode supports in Solid Oxide Cells remains a resource-intensive challenge. Improving the green tape properties are often reliant on trial-and-error procedures or proprietary knowledge that is inaccessible to the broader scientific community. In this work, we use computational simulations as a powerful tool to link the manufacturing process to the final microstructure of the tape. A novel three-dimensional physics-based model is presented to simulate the slip preparation and the homogeneous drying process of the tape casting producing the fuel electrode support in Solid Oxide Cells. Our model is well-calibrated to experimental data, and we investigate the dried microstructure of the simulated support