Centre National de la Recherche Scientifique

Discrete adjoint gradient computation for multiclass traffic flow models on road networks

Abstract This paper applies a discrete adjoint gradient computation method for a multi-class traffic flow model on road networks. Vehicle classes are characterized by their specific velocity functions, which depend on the total traffic density, resulting in a coupled hyperbolic s...

Hidden genomic structure and widespread structural polymorphism across environmental gradients in the spiny sea star Marthasterias glacialis

Abstract Genomic regions of reduced recombination can preserve linkage among co-adapted alleles, facilitating local adaptation despite high connectivity. Such regions—often generated by chromosomal inversions—may be especially important in highly dispersive marine taxa yet remain...

A ReSCAL-based numerical study on synergistic optimization of photovoltaic arrays for sand control and power generation

In arid desert environments, photovoltaic (PV) arrays not only serve as clean energy suppliers, but also act as physical barriers to mitigate wind-blown sand movement. Based on the Real-Space Cellular Automaton Laboratory (ReSCAL), this study explores the coupled effects of PV ar...

Experimental study of enhanced flow asymmetry due to viscoelasticity: An assessment of viscoelastic constitutive models

Flow past an asymmetrically confined cylinder of shear-thinning viscoelastic polymer solutions has been experimentally investigated. We show that the flow asymmetry induced by the asymmetric geometry is enhanced at Weissenberg numbers (Wi) above unity; that is, the flow in the no...

Use of waste marble powder as a cement substitute in three-dimensionally printable mortars

The potential of Tunisian marble waste as a sustainable partial substitute for cement in mortars for three-dimensional printing (3DP) for construction applications was explored. Marble powder (MP) generated from cutting and finishing processes was characterised through X-ray diff...

Indistinguishable single photons from a quantum dot in a nanopost cavity

Wavelength-tunable sources of single photons are key devices for scaling up optical quantum technologies. In this context, individual quantum dots (QDs) embedded in broadband photonic nanostructures are particularly appealing. The nanopost cavity, which is built with a segment of...

Potential glacier contributions to the 2024 La Bérarde flood

Abstract. On 20–21 June 2024, an unprecedented flood of the Etançons river caused important damage to the village of La Bérarde (Écrins, France). An analysis of the event showed that the flood was caused by the combination of an intense rain-on-snow event at high altitude and the...

Predicting driving performance from resting-state EEG using explainable gradient boosting

Abstract Sleep deprivation substantially impairs driving performance, underscoring the need for Electroencephalography (EEG)-derived markers associated with driving-performance vulnerability under varying levels of sleepiness. In this study, resting-state EEG signals were recorde...

Impact of chronic doxycycline treatment in a mouse model of tauopathy

Tauopathies are neurodegenerative disorders characterized by the accumulation of hyperphosphorylated tau, leading to synaptic dysfunction, neuroinflammation, and both cognitive and motor impairments. Doxycycline (Doxy), a tetracycline antibiotic commonly used to treat bacterial i...

Identification of living (Rose Bengal)-stained benthic foraminifera using automated image recognition

Abstract. Living and fossil benthic foraminifera are widely used as bioindicators of ecosystem quality, but their analysis is time-consuming. With the help of artificial intelligence, models for the automatic identification of fossil planktonic foraminifera and, more recently, be...

Poromechanical toughening in tensile fracture of saturated solids

<title>Abstract</title> Fracture in fluid-saturated porous solids is governed not only by solid mechanics but also by fluid flow within the pore space. In systems ranging from geomaterials to biological tissues, deformation in the near-tip region perturbs pore pressure and thereb...

TSPO: a conserved mitochondrial conduit linking cellular homeostasis to disease

Abstract The translocator protein (TSPO) is an evolutionarily conserved 18 kDa protein localised to the outer mitochondrial membrane and increasingly recognised as a multifunctional regulator of cellular homeostasis. Although initially identified as the peripheral benzodiazepine...

Characterization of tensile and torsional fatigue behaviors of additively manufactured super duplex stainless steel SAF 2507

Abstract Super duplex stainless steels (SDSSs) are well known for their good mechanical properties and corrosion resistance inherited from the dual-phase microstructure with equivalent proportion of ferrite and austenite. The development of additive manufacturing has given rise t...

Polymer-Driven Self-Templated Synthesis of Boronate-COF Hollow Spheres: Toward the Development of Size-Selective Nanoreactors

Abstract Covalent organic frameworks are a family of porous crystalline structures gaining attention due to their promising applications. However, despite significant efforts, the synthesis and understanding of uniform and specific morphologies remain a challenge. Herein, we repo...

Misperceptions of charismatic species' conservation status: Zoo visits and virtual exposure shape perceptions of extinction risk

Abstract Biodiversity loss is accelerating globally, yet species are not equally affected, and public perceptions of extinction risk often diverge from scientific assessments. Understanding what shapes public perceptions is critical for effective conservation communication, parti...

Efficient quantum implementation of dynamical mean field theory for correlated materials

The accurate theoretical description of materials with strongly correlated electrons is a formidable challenge in condensed matter physics and computational chemistry. Dynamical Mean Field Theory (DMFT) is a successful approach that predicts behaviors of such systems by incorpora...

Detection of spiking motifs of arbitrary length in neural activity using bounded synaptic delays

In the context of spiking neural networks, the temporal coding hypothesis is increasingly preferred over the rate coding hypothesis due to its advantages in processing speed and energy efficiency. In temporal coding, synaptic delays are crucial for processing signals with precise...

Influence of spatial connectivity on the spread of Mpox in Maï-Ndombe province, Democratic Republic of the Congo, 2025

<title>Abstract</title> <bold>Background</bold> The spread of Mpox in the DRC is strongly influenced by human mobility in a context of environmental constraints and inequalities in accessibility. The province of Maï-Ndombe, with its fragmented transport network and dependence on...

Inlining as a Space Optimization: A Simple Time- and Space-Invariant Implementation of the Weak Lambda-Calculus

We propose an implementation model for the evaluation of the weak λ-calculus, which is invariant for both time and space complexity, in both call-by-name and call-by-value strategies. In other words, this model provides an implementation of any weak call-by-name or weak call-by-v...

Breast cancer metabolism and responsiveness to dichloroacetate: relationships with 15N and 13C natural abundance

Abstract Background Metabolic reprogramming is a hallmark of breast cancer (BrCa), with alterations in glycolysis, glutamine metabolism, and the urea cycle contributing to tumour progression. Dichloroacetate (DCA), a pyruvate dehydrogenase kinase (PDK) inhibitor, shifts metabolis...