À la recherche du Web perdu …

Presentation (2018, November 07)

Alors que la durée de vie d’une page Web est estimée en moyenne à deux mois et celle d’un site Internet à moins de cinq ans, les internautes qui ont suivi les premiers développements du Web grand public ... [more ▼]

Alors que la durée de vie d’une page Web est estimée en moyenne à deux mois et celle d’un site Internet à moins de cinq ans, les internautes qui ont suivi les premiers développements du Web grand public dans les années 1990 ont déjà vu disparaître plusieurs communautés virtuelles et certains de leurs espaces en ligne favoris, à l’instar de Geocities, Myspace, ou Vine. Ce Web perdu invite à penser à la fois la nostalgie et la « fabrique de la désuétude » (pour reprendre Gustavo Gomez-Meijia in Schafer V. dir., Temps et temporalités du Web, Presses de Nanterre, 2018) qui marquent la Toile, et les enjeux de mémoire et de patrimonialisation qui leur sont attachés. Mais c’est aussi la manière dont le Web du passé peut être retrouvé, reconstruit, étudié, que ce soit en histoire ou en archéologie des médias, qui est en jeu. C’est rechercher un Web inscrit dans des temporalités, espaces, pratiques et matérialités propres et qui doit être recontextualisé. Il faut faire face aux silences mais aussi au trop plein d’archives du Web, qui s’avèrent à la fois pléthoriques et lacunaires, et se confronter au risque d’une perte d’intelligibilité. La quête des origines du Web, le sentiment d’un âge d’or du Web des débuts, les bruits et les silences des archives du Web, ou encore le risque de perte de sens seront au cœur de cette intervention pour interroger les sources, pratiques et défis d’une histoire foisonnante. [less ▲]

A la rencontre de Lev Vygotsky

Book published by Université du Luxembourg (2007)

Ce livre est issu d’un projet pédagogique réalisé au second semestre de l’année académique 2006-2007 par des étudiantes et étudiants de l’Université du Luxembourg, dans le cadre du deuxième module ... [more ▼]

Ce livre est issu d’un projet pédagogique réalisé au second semestre de l’année académique 2006-2007 par des étudiantes et étudiants de l’Université du Luxembourg, dans le cadre du deuxième module : «Introducing Vygotsky (1896-1934): Mediation and the ZPD» de l’unité d’apprentissage «Learning as a social and cultural practice» du programme d’études du Bachelor Professionnel en Sciences de l’Education (BPSE), dispensé par la Faculté des Lettres, des Sciences Humaines, des Arts et des Sciences de l'Education. Il contient des contributions originales sur des thèmes variés du domaine de la psychologie des apprentissages, du développement et de l'éducation. [less ▲]

A Mindfulness-Based Group Intervention for Enhancing Self-Regulation of Emotion in Late Childhood and Adolescence: A Pilot Study

in International Journal of Mental Health and Addiction (2016), 14(5), 775-790

Emotion dysregulation is strongly implicated in the development of psychological problems during adolescence. The purpose of this study was to examine the feasibility and acceptability of an intervention ... [more ▼]

Emotion dysregulation is strongly implicated in the development of psychological problems during adolescence. The purpose of this study was to examine the feasibility and acceptability of an intervention for enhancing self-regulation of emotion in adolescents, adapted from Mindfulness-based Cognitive Therapy. We studied the impact of the intervention on depressive symptoms, as well as on transdiagnostic psychological processes related to emotional regulation, namely impulsivity and ruminative thinking. Twenty-one participants aged between 11 and 19 years were offered a nine-session group intervention. Adolescents completed standardized questionnaires before and after the training. This intervention was found to increase self-reported mindfulness and was well-accepted by adolescents, as estimated by the low dropout rate. As expected, a decrease was observed in depressive symptoms, in specific impulsivity facets (urgency and lack of perseverance), and in internal-dysfunctional strategies of emotion regulation (especially in unconstructive repetitive thoughts). The present findings provide preliminary support for a group intervention for adolescents characterized by emotion regulation difficulties, targeting transdiagnostic psychological processes (impulsivity and ruminative thinking). Furthermore, by potentially enhancing self-regulation skills, this intervention might constitute an effective method for general prevention of psychological disorders in late childhood and adolescence. © 2016, Springer Science+Business Media New York. [less ▲]

« À nos braves » : les monuments aux légionnaires luxembourgeois entre conflit et réconciliation

in Camarda, Sandra; Sauer, Arnaud; Scuto, Denis (Eds.) et al Légionnaires : Parcours de Guerre et de Migrations entre le Luxembourg et la France (2020)

A phenotypic screen in zebrafish identifies a novel small-molecule inducer of ectopic tail formation suggestive of alterations in non-canonical Wnt/PCP signaling

in PLoS ONE (2013), 8(12),

Zebrafish have recently emerged as an attractive model for the in vivo bioassay-guided isolation and characterization of pharmacologically active small molecules of natural origin. We carried out a ... [more ▼]

Zebrafish have recently emerged as an attractive model for the in vivo bioassay-guided isolation and characterization of pharmacologically active small molecules of natural origin. We carried out a zebrafish-based phenotypic screen of over 3000 plant-derived secondary metabolite extracts with the goal of identifying novel small-molecule modulators of the BMP and Wnt signaling pathways. One of the bioactive plant extracts identified in this screen - Jasminum gilgianum, an Oleaceae species native to Papua New Guinea - induced ectopic tails during zebrafish embryonic development. As ectopic tail formation occurs when BMP or non-canonical Wnt signaling is inhibited during the tail protrusion process, we suspected a constituent of this extract to act as a modulator of these pathways. A bioassay-guided isolation was carried out on the basis of this zebrafish phenotype, identifying para-coumaric acid methyl ester (pCAME) as the active compound. We then performed an in-depth phenotypic analysis of pCAME-treated zebrafish embryos, including a tissue-specific marker analysis of the secondary tails. We found pCAME to synergize with the BMP-inhibitors dorsomorphin and LDN-193189 in inducing ectopic tails, and causing convergence-extension defects in compound-treated embryos. These results indicate that pCAME may interfere with non-canonical Wnt signaling. Inhibition of Jnk, a downstream target of Wnt/PCP signaling (via morpholino antisense knockdown and pharmacological inhibition with the kinase inhibitor SP600125) phenocopied pCAME-treated embryos. However, immunoblotting experiments revealed pCAME to not directly inhibit Jnk-mediated phosphorylation of c-Jun, suggesting additional targets of SP600125, and/or other pathways, as possibly being involved in the ectopic tail formation activity of pCAME. Further investigation of pCAME's mechanism of action will help determine this compound's pharmacological utility. © 2013 Gebruers et al. [less ▲]

L'a priori, l'a posteriori, le pur et le non pur chez Christian Wolff et ses maîtres

Doctoral thesis (2014)

This work tries at first, in a structural part, to understand the coherence and to estimate the solidity of the " marriage between the reason and the experience " that Christian Wolff tried to establish ... [more ▼]

This work tries at first, in a structural part, to understand the coherence and to estimate the solidity of the " marriage between the reason and the experience " that Christian Wolff tried to establish in philosophy, by means of the concepts of a priori, of a posteriori, the pure and the not pure. It demonstrates while this "alliance" is not bearable and engenders an important tension in the whole of its thought, what engenders a historic crisis concerning the metaphysics, the crisis ending historically in the criticism of Kant. In a more historic, second part, this work tries to go back up at the origin of the use of these concepts (a priori, a posteriori, pure and not pure) at the predecessors of Wolff (Tschirnhaus, Leibniz, Weigel, Sturm, Agricola, Descartes, Ramus, etc.) to establish that the concept of pure reason is far from making the unanimity in the classic thought, that it stirs up controversy and that it is in complete opposition with the Aristotelian and scholastic tradition. This work thus allows in the end to question a history of the official philosophy based on the classic interpretation stemming from Kant. [less ▲]

À propos d’une redéfinition patrimoniale dans les campagnes au nord de Milan au début du XIVe siècle

in Le Moyen Âge (2014), 120(2), 447-466

A propos de la taille des villes. Population agglomérée - population dispersée à l'aube du XIXe siècle

in Le réseau urbain en Belgique dans une perspective historique (1350-1850). Une approche statistique et dynamique (1992)

A propos des rapports entre économie sociale et solidaire et insertion professionnelle

Presentation (2014, March 25)

A propos du principe de primauté

in Schneider, Catherine (Ed.) Le traité de Lisbonne. Reconfiguration ou déconstitutionnalisation de l’Union européenne ? (2009)