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Cross-border effects of war: Crisis management pitfalls for a boycotted French multinational in Poland
No full textInternational audienceThis study focuses on boycotts driven by geopolitical crises, exemplified by the backlash against French retailer Leroy Merlin in Poland during Russia’s invasion of Ukraine. It examines the cognitive processes underlying consumer decisions to boycott specific companies during crises and the factors influencing shifts in boycott participation over time. It also explores how corporate crisis management and communication strategies affect boycott dynamics. Using a temporal perspective, results show that perceived errors can exacerbate actions while transparency and consistency help ease tensions in polarized contexts. Besides, it demonstrates that enhancing value propositions (e.g., quality, services, price) can reduce boycott participation
Acceleration of implicit schemes for large systems of delay differential equations
No full textInternational audienceThe objective is to accelerate numerical implicit schemes for solving large linear or nonlinear delay differential equations. These schemes require solving large linear or nonlinear systems at each integration step, making effective initial guesses critical for rapid convergence. For nonlinear problems, an inexact Newton method is used, whose efficiency depends heavily on the quality of these initial guesses. To generate them, line search or trust-region algorithms are employed -each involving the solution of large linear systems. These linear systems are solved using a Krylov subspace method. Initial guesses are constructed via a Petrov-Galerkin process applied to low-dimensional approximation subspaces derived from previous steps. Error estimates are provided, linking the accuracy of the initial guesses to the timestep size, the scheme's order, and the subspace dimension. Numerical experiments show speedups of up to two orders of magnitude over standard predictor-based methods, when those converge
Measurement of the (1S), (2S), and (3S) differential cross sections in pp collisions at = 13.6 TeV
No full textInternational audienceThe production cross sections of the (1S), (2S), and (3S) mesons are measured in proton-proton collisions at = 13.6 TeV, using a data sample collected in 2022 by the CMS experiment and corresponding to an integrated luminosity of 37.4 fb. The measurement is performed in the decay channels, differentially as a function of transverse momentum in the 20200 GeV range, in the 0.6 and 0.6 1.2 rapidity intervals
Antibioprophylaxis in thoracic surgery, thoracic endoscopy, and interventional radiology
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First observation of multi-phonon -vibrations in an odd-odd nuclear system
No full textInternational audienceThe identification of the first multi-phonon -vibrational bands in an odd-odd neutron-rich nucleus of the nuclear chart is presented. These high spin structures of hard to access Nb, produced in fission, were studied by combining a spectrometer with isotopic resolution coupled to a -ray tracking array and independently high-fold coincidence measurements. Triaxial Projected Shell Model calculations for the high-spin states are in good agreement with the measured observables for the yrast, one-phonon and two-phonon bands. The possibility of an oblate shape of an isomeric state and coexistence of triaxial and oblate configurations are investigated from the decay of the 141 keV isomer. The present work illustrates the robustness of vibration excitations in the presence of odd valence proton and neutron as well as the possibly coexisting shapes beyond the transitional region
Intraoperative Assessment of Kinematics Using Robotic-Assisted Total Knee Arthroplasty Is Reliable: A Cadaver-Based Study
No full textInternational audienceAbstract Computed tomography–based robotic-arm-assisted total knee arthroplasty (RATKA) enables three-dimensional surgical planning and intraoperative adjustment of implant positioning based on ligament laxity. Stability and kinematic assessments may offer enhanced insight into multiplanar knee laxity, but their reproducibility remains underexplored. This study evaluated the reliability of intraoperative knee kinematic (dynamic), sagittal and transverse stability assessments in a cadaver setting under different support conditions. Cruciate-retaining RATKA was performed on five fresh-frozen cadaver knees by three experienced surgeons. Medial and lateral anteroposterior translation (MAP, LAP) and internal–external rotation (IE) were measured at 10, 45, and 90 degrees of flexion before and after component implantation. Dynamic assessments across the full range of motion were used to calculate the average medial contact position (AMCP) and medial pivot ratio (MPR). Inter- and intra-rater reliability were determined using intraclass correlation coefficients (ICC: poor < 0.4, good 0.4 to 0.74, and excellent ≥ 0.75). Analyses compared a leg-holder-only condition with all surgeons, including manual support. Intra- and inter-rater reliability across all surgeons was generally good to excellent. For intact knees, reliability ranged from ICC 0.52 to 0.84 for MAP, 0.44 to 0.57 for LAP, and 0.48 to 0.62 for IE. With components, reliability remained good to excellent for MAP, LAP, and IE (ICC 0.47 to 0.80). Dynamic AMCP assessments demonstrated excellent inter-rater reliability (ICC 0.84 to 0.93), while MPR showed good reliability (ICC 0.57). The leg holder reduced variance for MAP/LAP and IE, maintaining error within two mm or 5 degrees, respectively. Intra-rater reliability was consistently excellent across nearly all measures (ICC 0.69 to 0.99). Intraoperative stability and kinematic assessments during RATKA are reproducible, particularly for AMCP. The leg holder generally improved consistently across observers and reduced variance. These findings support the reliability of robotic-assisted intraoperative stability and kinematic measures for evaluating knee function and guiding surgical planning
Indicator factsheet - Thermal comfort in ruminants and equines
No full textThis indicator factsheet provides key factors for the appropriate management of ruminants and equines in relation to thermal conditions, and provides recommendations for inspection
Chemical composition, antibacterial activity and antibacterial mechanism of Kesum (Persicaria minus Huds.) essential oil
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