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Dec 3, 2024 | 
winnipegfreepress.com | Alexandre Massaux |Université de Toulon
This article was originally published on The Conversation, an independent and nonprofit source of news, analysis and commentary from academic experts. Disclosure information is available on the original site. ___Author: Alexandre Massaux, Ph.D. in international relations, Université de ToulonWith its strong economic growth for a western country, added to its desire to play a greater military role within NATO, Poland is poised to become a key player in Europe.
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Dec 2, 2024 | 
tolerance.ca | Alexandre Massaux |Université de Toulon
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Nov 1, 2024 | 
sudouest.fr | Alexandre Massaux |Université de Toulon
Le conflit entre l’Ukraine et la Russie a un impact sur l’ensemble de l’Union européenne. Des pays comme la France et l’Allemagne peinent à trouver une politique cohérente. Hésitant entre aider l’Ukraine ou ménager leurs relations avec Moscou, les deux pays, qui étaient dans le passé les forces motrices de l’Union européenne, sont affaiblis sur le plan international, mais aussi sur le plan intérieur en raison de facteurs économiques et politiques.
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Aug 26, 2024 | 
link.aps.org | Antoine Rignon-Bret |Aix Marseille Université |Université de Toulon |Simone Speziale
We show that when the Wald-Zoupas prescription is implemented, the resulting charges realize the Bondi-Van der Burg–Metzner-Sachs (BMS) symmetry algebra without any 2-cocycle nor central extension, at any cut of future null infinity. We refine the covariance prescription for application to the charge aspects, and introduce a new aspect for Geroch’s supermomentum with better covariance properties.
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Aug 26, 2024 | 
link.aps.org | Abhay Ashtekar |Simone Speziale |Aix Marseille Université |Université de Toulon
Null infinity, I+, arises as a boundary of the Penrose conformal completion (M^,g^ab) of an asymptotically flat physical space-time (M,gab). We first note that I+ is a weakly isolated horizon (WIH) in (M^,g^ab), and then show that its familiar geometric properties can be derived from the general WIH framework. This seems quite surprising because physics associated with black hole (and cosmological) WIHs Δ is very different from that extracted at I+.
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Aug 12, 2024 | 
link.aps.org | Marco Mancastroppa |Aix Marseille Université |Université de Toulon |Alessandro Vezzani
Human behavior strongly influences the spread of infectious diseases: understanding the interplay between epidemic dynamics and adaptive behaviors is essential to improve response strategies to epidemics, with the goal of containing the epidemic while preserving a sufficient level of operativeness in the population. Through activity-driven temporal networks, we formulate a general framework which models a wide range of adaptive behaviors and mitigation strategies, observed in real populations.
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Jul 11, 2024 | 
academic.oup.com | Aix Marseille Université |Université de Toulon |Osu Pytheas |Pelagos Laboratory
Dinitrogen (N ) fixation represents a key source of reactive nitrogen in marine ecosystems. While the process has been rather well explored in low latitudes of the Atlantic and Pacific Oceans, other higher latitude regions and particularly the Indian Ocean have been chronically overlooked.
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May 23, 2024 | 
link.springer.com | Université de Toulon |Nantes Université |Faculté de Médecine
AbstractThe perception of effort exerts influence in determining task failure during endurance performance. Training interventions blending physical and cognitive tasks yielded promising results in enhancing performance. Motor imagery can decrease the perception of effort. Whether combining motor imagery and physical training improves endurance remains to be understood, and this was the aim of this study.
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May 9, 2024 | 
link.aps.org | Stony Brook |Aix-Marseille Université |Université de Toulon
The hadron mass can be obtained through the calculation of the trace of the energy-momentum tensor in the hadron which includes the trace anomaly and sigma terms. The anomaly due to conformal symmetry breaking is believed to be an important ingredient for hadron mass generation and confinement. In this work, we will present the calculation of the glue part of the trace anomaly form factors of the pion up to Q2∼4.3 GeV2 and the nucleon up to Q2∼1 GeV2.
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Apr 15, 2024 | 
ijbnpa.biomedcentral.com | Aix-Marseille Univ |Université de Toulon
The study design consisted of three conditions into which participants were randomly assigned: exposure to advertising messages with the Nutri-Score displayed vs. exposure to advertising messages without the Nutri-Score vs. no exposure to advertising messages (control condition) (Fig. 1). The independent variable was called the “messages with vs. without the Nutri-Score” variable. Examples of advertising messages and products used in experimental and control conditions.
