La métamorphose sur les scènes contemporaines allemandes

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The threshold phenomena for propagation in fractional Laplacian diffusion equations

In this paper, we investigate the threshold phenomenon between extinction and propagation in fractional Laplacian diffusion equations for a class of compactly supported initial data. We provide the first quantitative estimates on the threshold when the reaction nonlinearity is of bistable or ignition type. We mainly use estimates on the fundamental solutions of fractional Laplacian operators together with some accurate upper and lower solutions to show that the solution either propagates or goes extinct

Profils verbal et non verbal dans le Trouble Développemental du Langage et le Trouble du Spectre de l’Autisme. Apports pour le diagnostic différentiel

Les difficultés de langage sont souvent le premier motif de consultation pour un diagnostic d’un trouble développemental du langage ou d’un trouble du spectre de l’autisme. La question du diagnostic différentiel entre ces deux troubles est donc centrale, alors qu’il est parfois difficile de les distinguer sur la base des profils langagiers. Pour répondre à cette difficulté, l’objectif de cette revue de littérature est de mettre en parallèle les profils verbaux et non verbaux observés dans ces deux troubles. Il en ressort que si le domaine langagier ne permet souvent pas de différencier les deux troubles, les capacités non verbales peuvent être un bon indicateur pour le diagnostic différentiel. Les implications cliniques de ce constat sont discutées

The small world of Toledo’s intellectual elite (early 13th century)

Work in Progress Seminar, Warburg Institut, London

Portraits croisés de populations autochtones et d’Afro-Américains au Canada et Etats-Unis

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Verifying HyperLTL properties in Event-B

International audienceThe study presented in this paper is motivated by the verification of properties related to hardware architectures, namely timing anomalies that qualify as counter-intuitive timing behaviour. They are avoided by a monotonicity property which is a Hyper-LTL property. We present how to prove some classes of Hyper-LTL properties with Event-B

Stability of KdV equation in a network with bounded and unbounded lengths

In this work, we studied the exponential stability of the nonlinear KdV equation posed in a finite star shaped network. On each branch of the network we define a KdV equation posed on a finite domain (0, ℓ j) or the half-line (0, ∞). We start by proving well-posedness and some regularity results. Then, we state the exponential stability of the linear KdV equation by acting with a damping term on some branches. The main idea is to prove a suitable observability inequality. In the nonlinear case, we obtain two kinds of results: The first result holds for small amplitude solutions, and is proved using a perturbation argument from the linear case but without acting on all edges. The second result is a semiglobal stability result, and it is obtained by proving an observability inequality directly for the nonlinear system, but we need to act with damping terms in all the branches. In this case, we are able to prove the stabilization in weighted spaces

"Lacordaire et l'uniforme sorézien (1854-1861)" dans Véronique Castagnet (dir.), Des habits pour étudier. Le vêtement scolaire (XVIe-XXIe siècles), Villeneuve d'Ascq, Presses Universitaires du Septentrion, 2024, p. 107-121.

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Conjugated linoleic acid (CLA) modulates bovine peripheral blood mononuclear cells (PBMC) proteome in vitro

International audienceConjugated linoleic acid (CLA) is a group of natural isomers of the n-6 polyunsaturated fatty acid (PUFA) linoleic acid, exerting biological effects on cow physiology. This study assessed the impact of the mixture 50:50 (vol:vol) of CLA isomers (cis-9, trans-11 and trans-10, cis-12) on bovine peripheral blood mononuclear cells (PBMC) proteome, identifying 1608 quantifiable proteins. A supervised multivariate statistical analysis, sparse variant partial least squares - discriminant analysis (sPLS-DA) for paired data identified 407 discriminant proteins (DP), allowing the clustering between the CLA and controls. The ProteINSIDE workflow found that DP with higher abundance in the CLA group included proteins related to innate immune defenses (PLIN2, CD36, C3, C4, and AGP), with antiapoptotic (SERPINF2 and ITIH4) and antioxidant effects (HMOX1). These results demonstrated that CLA modulates the bovine PBMC proteome, supports the antiapoptotic and immunomodulatory effects observed in previous in vitro studies on bovine PBMC, and suggests a cytoprotective role against oxidative stress. SIGNIFICANCE: In this study, we report for the first time that the mixture 50:50 (vol:vol) of cis-9, trans-11, and trans-10, cis-12-CLA isomers modulates the bovine PBMC proteome. Our results support the immunomodulatory and antiapoptotic effects observed in bovine PBMC in vitro. In addition, the present study proposes a cytoprotective role of CLA mixture against oxidative stress. We suggest a molecular signature of CLA treatment based on combining a multivariate sparse discriminant analysis and a clustering method. This demonstrates the great value of sPLS-DA as an alternative option to identify discriminant proteins with relevant biological significance

Production écrite et ponctuation : étude comparative entre des élèves de début de primaire brésiliens et français

International audienceThis study examines the usage of punctuation marks (PM) in narratives created by six-year-old students in two distinct classrooms: one in Brazil and the other in France. Both teachers instructed their students, organized in pairs, to compose stories. Twelve manuscripts (M) were chosen from two pairs in each country (MBR, Brazilian Manuscripts, and MFR, French Manuscripts). Our analysis focused on: a) the correlation between the number of words and the frequency of punctuation marks; b) the types and placements of PMs. In Brazilian manuscripts, we observed an average of one PM for every fifty-five words, while in French manuscripts, the average was one PM per 5 words. In Brazilian manuscripts, a capital letter and a period were typically employed to signify the beginning and end of a story. In French manuscripts, PMs were dispersed throughout the narrative, encompassing a variety of forms such as capital letters, commas, hyphens, question marks, and periods. These disparities suggest that the process of learning to write may be influenced by pedagogical practices, instructional methods, and approaches to reading instruction.Cet article analyse les marques de ponctuation (MP) dans des histoires inventées par des élèves de 6 ans de deux classes : l’une brésilienne, l’autre française. Les deux professeures ont demandé aux élèves de leurs classes, organisés en binôme, de produire des récits. Douze manuscrits (M) ont été sélectionnés auprès de deux dyades de chaque pays (MBR, Manuscrits brésiliens et MFR, Manuscrits français). Notre analyse a pris en compte : a) la relation entre le nombre de mots et le nombre de marques de ponctuation; b) les types et les positions des MP. Dans les MBR, nous relevons une MP pour cinquante-cinq mots. Dans les MFR, la moyenne était d’une MP pour 5 mots. Dans les MBR, une majuscule et un point délimitent le début et la fin de l’histoire. Dans les MFR, placées tout au long du récit, les MP sont variées : lettre majuscule, virgule, tiret, point d’interrogation et point. Ces différences indiquent que l’apprentissage de l’écriture semble être associé à la pratique de l’enseignement, à l’approche didactique et aux méthodes de lecture