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Production de contenus sur Instagram autour d’œuvres des collections muséales : de la tension entre images iconiques et images inédites
No full textInternational audienc
Evidence for a role of memory in novel word-learning after perinatal stroke
No full textInternational audienceChildren with left perinatal arterial ischemic stroke (PAIS) often exhibit language deficits. However, evaluations of learning abilities are scarce. We compared word-referent associative learning and recall performance using a fast-mapping paradigm in a group of 3.5-year-old children with PAIS and in age-matched controls. The task involved a referent selection phase followed by immediate and delayed recall trials of the novel word-object associations. While no between-group differences were observed in the referent selection and immediate recall, children with PAIS showed lower performance in delayed recall of the newly learned associations. These results suggest that word learning difficulties after PAIS may arise due to a memory retention failure rather than to the process of referent selection through disambiguation involved in the fast mapping task. We discuss these findings in relation to the neural bases of infant language acquisition and their implications for clinical practice, particularly in terms of improving lexical acquisition and retention in children with PAIS
Décrocheurs de portraits du chef d’Etat, désobéissance civile, droit de résistance et judiciarisation de l’action militante
No full textInternational audienceفي عام 2019، قام نشطاء من مجموعة ”العمل غير العنيف-COP21“ (وهي مجموعة تعارض السياسات التي تساهم في تغير المناخ، وتدعي أنها غير عنيفة وتدعو إلى العصيان المدني) بإنزال صور رسمية لإيمانويل ماكرون في العديد من قاعات المدن، من أجل ”إظهار“ مطلبهم بالتنفيذ الفوري لتدابير سياسية جذرية لصالح البيئة. في غضون بضعة أشهر فقط، تم إنزال أكثر من مائة صورة.قامت السلطات بقمع هذه الأعمال بشدة، بطريقة تتناسب عكسيًا مع الأضرار التي لحقت بها. وكانت الردود القانونية متباينة، مما أدى إلى شعور بعدم اليقين.وقد عززت هذه القرارات التي طال انتظارها تكتيكات النشطاء السياسية والقانونية. - أولًا، القيام بأعمال مذهلة قادرة على تنبيه الرأي العام؛ وثانيًا، تكبد مجموعة متنوعة من القرارات القانونية الصادرة عن المحاكم الابتدائية، ثم قام النشطاء المدانون بالطعن أمام محكمة النقض. وأخيرًا، كان علينا أن ننتظر حكم الشعبة الجزائية في الاستئناف.يجدر بنا أن نتأمل هنا مفاهيم العصيان المدني، وحتى مقاومة القمع، التي تكفلها المادة 2 من إعلان حقوق الإنسان والمواطن (رغم أن هذا لم يذكر في الطعون). هل يجب علينا أن ندين أو نوافق أو نتفهم؟Im Jahr 2019 hängten Aktivisten von Action non violente-COP21 (ANV-COP21, eine Gruppierung, die sich gegen eine Politik wendet, die zum Klimawandel beiträgt, ihre Gewaltlosigkeit einfordert und sich auf zivilen Ungehorsam beruft) in mehreren Rathäusern offizielle Porträts von Emmanuel Macron ab, um ihre Forderung nach der sofortigen Umsetzung radikaler umweltpolitischer Maßnahmen „sichtbar“ zu machen. Innerhalb weniger Monate wurden über hundert Porträtabnahmen gezählt.Die Machthaber gingen hart gegen diese Aktionen vor, wobei der Schaden umgekehrt proportional war. Die Antworten der Gerichte fielen unterschiedlich aus und führten zu einem Gefühl der Unsicherheit.Die mit Spannung erwarteten Entscheidungen bestätigten die politisch-juristische Taktik der Aktivisten. - Zunächst sollten spektakuläre Aktionen durchgeführt werden, um die öffentliche Meinung zu alarmieren; dann sollten verschiedene Entscheidungen von Richtern in der Hauptsache getroffen werden, woraufhin die verurteilten Aktivisten den Kassationsgerichtshof anriefen. Schließlich musste man auf die Entscheidung der Strafkammer über die Rechtsmittel warten.Hier ist es angebracht, die Begriffe ziviler Ungehorsam oder sogar Widerstand gegen Unterdrückung zu hinterfragen, die in Artikel 2 der Erklärung der Menschen- und Bürgerrechte garantiert werden (obwohl letzterer in den Berufungen nicht erwähnt wurde). Soll man verurteilen, nicken oder verstehen?In 2019, activists from Action non-violente-COP21 (ANV-COP21, a group that opposes policies that contribute to climate change, claims to be non-violent and advocates civil disobedience) took down official portraits of Emmanuel Macron in several town halls, in order to ‘make visible’ their demand for the immediate implementation of radical political measures in favour of the environment. In just a few months, over a hundred portraits were taken down.The powers that be cracked down hard on these actions, in a way that was inversely proportional to the damage done. The legal responses were varied, leading to a feeling of uncertainty.These long-awaited decisions corroborated the activists' political and legal tactics. Firstly, to take spectacular action to alert public opinion. Secondly, they risked a variety of legal decisions handed down by the lower courts, with the convicted activists then appealing to the Court of Cassation. Finally, waiting for the Criminal Division to rule on the appeals.Here, we need to consider the concepts of civil disobedience and even resistance to oppression guaranteed by article 2 of the Declaration of the Rights of Man and of the Citizen (although this was not put forward in the appeals). Should we condemn, acquiesce or understand?En 2019, activistas de Acción no violenta-COP21 (ANV-COP21, un grupo que se opone a las políticas que contribuyen al cambio climático, se declara no violento y aboga por la desobediencia civil) descolgaron retratos oficiales de Emmanuel Macron en varios ayuntamientos, con el fin de «hacer visible» su exigencia de la aplicación inmediata de medidas políticas radicales en favor del medio ambiente. En pocos meses se han retirado más de un centenar de retratos.El poder reprimió duramente estas acciones, de forma inversamente proporcional a los daños causados. Las respuestas jurídicas fueron variadas, lo que provocó una sensación de incertidumbre.Estas esperadas decisiones corroboraron la táctica política y jurídica de los activistas. - En primer lugar, llevar a cabo acciones espectaculares capaces de alertar a la opinión pública; en segundo lugar, incurrir en diversas resoluciones judiciales dictadas por los tribunales inferiores, recurriendo después los activistas condenados ante el Tribunal de Casación. Por último, esperar a que la Sala de lo Penal se pronunciara sobre los recursos.Merece la pena considerar aquí los conceptos de desobediencia civil, e incluso de resistencia a la opresión, garantizados por el artículo 2 de la Declaración de los Derechos del Hombre y del Ciudadano (aunque esto no se mencionó en los recursos). ¿Debemos condenar, consentir o comprender?En 2019, des militants d'Action non violente-COP21 (ANV-COP21, groupement s’opposant aux politiques contribuant au dérèglement climatique, revendiquant sa non-violence et se réclamant de la désobéissance civile) ont décroché des portraits officiels d'Emmanuel Macron dans plusieurs mairies, afin de « visibiliser » leur revendication visant à la mise en œuvre immédiate de mesures politiques radicales en faveur de l’environnement. En quelques mois, plus d’une centaine de décrochages de portraits furent recensés.Le pouvoir en place réprima durement ces actions, de façon inversement proportionnelle au préjudice. Les réponses juridictionnelles furent d’ailleurs variées, entraînant un sentiment d’incertitude.Ces décisions, très attendues, corroboraient la tactique politico-judiciaire des militants. Opérer, dans un premier temps, des actions spectaculaires à même d’alerter l’opinion publique. Encourir, dans un second temps, une variété de décisions de justice rendues par les juges du fond, les activistes condamnés saisissant alors la Cour de cassation. Attendre enfin que la chambre criminelle statue sur les pourvois.Il convient en fait ici de s’interroger sur les notions de désobéissance civile, voire de résistance à l’oppression garantie par l’article 2 de la Déclaration des droits de l’Homme et du Citoyen (quoique ce dernier ne fut pas avancé dans les pourvois). Doit-on condamner, acquiescer ou comprendre ?Nel 2019, gli attivisti di Action non-violente-COP21 (ANV-COP21, un gruppo che si oppone alle politiche che contribuiscono al cambiamento climatico, si dichiara non violento e propugna la disobbedienza civile) hanno tolto i ritratti ufficiali di Emmanuel Macron in diversi municipi, per “rendere visibile” la loro richiesta di attuazione immediata di misure politiche radicali a favore dell'ambiente. In pochi mesi sono stati tolti più di cento ritratti.I poteri forti hanno dato un duro colpo a queste azioni, in modo inversamente proporzionale al danno arrecato. Le risposte legali sono state diverse e hanno generato un senso di incertezza.Queste decisioni tanto attese hanno confermato le tattiche politiche e legali degli attivisti. - In primo luogo, realizzare azioni spettacolari in grado di allertare l'opinione pubblica; in secondo luogo, incorrere in una serie di decisioni legali emesse dai tribunali di grado inferiore, con gli attivisti condannati che hanno poi fatto ricorso alla Corte di Cassazione. Infine, abbiamo dovuto attendere che la Divisione Penale si pronunciasse sui ricorsi.Vale la pena di riflettere sui concetti di disobbedienza civile, e persino di resistenza all'oppressione, garantiti dall'articolo 2 della Dichiarazione dei diritti dell'uomo e del cittadino (sebbene non sia stato menzionato nei ricorsi). Dovremmo condannare, acquietarci o comprendere?Em 2019, os activistas da Action non-violente-COP21 (ANV-COP21, um grupo que se opõe às políticas que contribuem para as alterações climáticas, afirma ser não-violento e defende a desobediência civil) derrubaram retratos oficiais de Emmanuel Macron em várias câmaras municipais, a fim de “tornar visível” a sua exigência de implementação imediata de medidas políticas radicais a favor do ambiente. Em poucos meses, foram retirados mais de uma centena de retratos.Os poderes públicos reprimiram duramente estas acções, de forma inversamente proporcional aos danos causados. As reacções dos tribunais foram variadas, o que provocou um sentimento de incerteza.Estas decisões, há muito esperadas, corroboram as tácticas políticas e jurídicas dos activistas. - Numa primeira fase, acções espectaculares de sensibilização da opinião pública; depois, numa segunda fase, várias decisões judiciais proferidas pelos tribunais de primeira instância, tendo os activistas condenados recorrido para o Tribunal de Cassação. Por fim, tivemos de esperar que a Divisão Penal se pronunciasse sobre os recursos.Vale a pena considerar aqui os conceitos de desobediência civil e mesmo de resistência à opressão, garantidos pelo artigo 2º da Declaração dos Direitos do Homem e do Cidadão (embora este último não tenha sido mencionado nos recursos). Devemos condenar, aceitar ou compreender?В 2019 году активисты Action non-violente-COP21 (ANV-COP21, группа, выступающая против политики, способствующей изменению климата, заявляющая о своей ненасильственной позиции и пропагандирующая гражданское неповиновение) сняли официальные портреты Эммануэля Макрона в нескольких мэриях, чтобы «сделать видимым» свое требование о немедленной реализации радикальных политических мер в интересах окружающей среды. Всего за несколько месяцев было снято более сотни портретов.Власти предержащие жестко пресекали эти акции, причем в пропорциональном отношении к нанесенному ущербу. Юридическая реакция была различной, что вызывало чувство неопределенности.Эти долгожданные решения подтвердили политическую и правовую тактику активистов. - Вначале - эффектные акции, направленные на привлечение внимания общественности; затем, во вторую очередь, различные судебные решения, вынесенные судами низшей инстанции, после чего осужденные активисты подавали апелляцию в Кассационный суд. И наконец, мы должны были дождаться решения Уголовной палаты по апелляциям.Здесь стоит задуматься о понятиях гражданского неповиновения и даже сопротивления угнетению, гарантированных статьей 2 Декларации прав человека и гражданина (хотя в апелляциях это не упоминалось). Должны ли мы осуждать, попустительствовать или понимать?2019 年，“21 世纪非暴力行动”（ANV-COP21，一个反对助长气候变化的政策、声称非暴力并倡导非暴力反抗的团体）的活动家们在多个市政厅取下了埃马纽埃尔-马克龙的官方肖像，以 “彰显 ”他们要求立即实施有利于环境的激进政治措施的诉求。短短几个月内，就有一百多幅肖像被取下。当权者对这些行动进行了严厉打击，打击力度与造成的损失成反比。法律上的反应各不相同，导致了一种不确定感。这些期待已久的决定证实了活动人士的政治和法律策略。- 首先，开展能够引起公众舆论警觉的壮观行动；其次，下级法院做出各种法律判决，被定罪的活动分子随后向最高上诉法院提出上诉。最后，我们不得不等待刑事法庭对上诉做出裁决。在此，值得思考的是《人权和公民权利宣言》第 2 条所保障的公民不服从甚至反抗压迫的概念（尽管在上诉中并未提及）。我们应该谴责、默许还是理解
Magnetic aftereffect and Barkhausen effect in thin films of the altermagnetic candidate Mn<sub>5</sub>Si<sub>3</sub>
No full textAltermagnetism as a third distinct type of collinear magnetic ordering lately attracts vivid attention. We here study the Hall effect response of micron-scale Hall bars patterned into Mn5Si3 thin films, an altermagnet candidate material. Recording transport data as a function of time, at fixed magnetic field magnitude, we observe a time-dependent relaxation of the Hall voltage qualitatively and quantitatively similar to the magnetic viscosity response well established in ferromagnetic films. In addition, the Hall voltage time traces feature clear unilateral steps, which we interpret as Barkhausen steps, i.e., as experimental evidence for abrupt reorientations of magnetic (Hall vector) domains in the altermagnetic candidate material. A quantitative analysis yields a Barkhausen length of around 18nm in the Hall bar devices with the smallest width of 100 nm
Observation of production in collisions at = 13 TeV with the ATLAS detector and constraints on anomalous quartic gauge-boson couplings
No full textInternational audienceThis Letter reports the observation of triboson production in 140 fb of data collected by the ATLAS detector from proton-proton collisions at a centre-of-mass energy of = 13 TeV at the LHC. Events with an opposite-charge pair, a high transverse-momentum photon, and significant missing transverse momentum are considered. The observed (expected) significance of the signal is 5.9 (6.0) standard deviations. The measured fiducial cross-section, defined for the final state is 6.2 0.8 (stat.) 0.6 (sys.) fb, in good agreement with the Standard Model prediction of 6.1 fb. Constraints on the Wilson coefficients of 13 dimension-8 operators describing physics beyond the Standard Model through anomalous quartic gauge-boson couplings are derived using the effective field theory framework
Keplerian shear with Rajchman property
No full textThe Keplerian shear was introduced within the context of measure preserving dynamical systemsby Damien Thomine, as a version of mixing for non ergodic systems. In this study we providea characterization of the Keplerian shear using Rajchman measure, for some flows on tori bundles.Our work applies to dynamical systems with singularities or with non-absolutely continuousmeasures. We relate the speed of decay of conditional correlations with the Rajchman order ofthe measures. Some of these results are extended to the case of compact Lie group bundles
Preincubation practices as sourcing in entrepreneurial ecosystems: A dynamic capability perspective
No full textInternational audiencePrevious research has highlighted the strategic role of incubators in entrepreneurial ecosystems, but has often overlooked their evolving nature, offering paradoxical results on preincubation practices such as tenant identification and screening. To address this gap, this paper presents an in-depth case study of a public regional incubator, analyzing preincubation through the lens of dynamic capability theory. The findings conceptualize tenant identification and screening as sensing and seizing capabilities which contribute to ecosystem reconfiguration dynamics by fostering collaboration, mutualizing and endowing resources, forming tenants, and transferring technology. By framing these practices as entrepreneurial sourcingan evolutionary and crossboundary processthe study advances understanding of how incubators continuously adapt with(in) their ecosystems. It also extends dynamic capability theory to the preincubation stage, revealing how incubators align their organizational processes with ecosystem-level transformation.</div
A new path to constrain the expansion history of the Universe in future spectroscopic galaxy surveys
No full textInternational audienceThe current tension between early- and late-Universe measurements of the Hubble constant (), along with the still elusive nature of dark matter and dark energy, calls for model-independent probes of the Universe's expansion history. The cosmic chronometers (CC) method offers a unique opportunity to directly measure the Hubble parameter without relying on any cosmological model assumptions or integrated distance measurements. Despite its potential, this technique remains statistics-limited: no current survey is optimized to detect large samples of CC, restricting the precision on to 20% at intermediate redshifts. Here, we investigate the opportunities that a next-generation spectroscopic facility could offer to CC studies, providing an estimate of the accuracy achievable on the reconstruction of the Hubble parameter in redshift. We demonstrate that with such a facility, it will be possible to derive constraints on key cosmological parameters, assessing the impact that such improvements would have on our understanding of the expansion history of the Universe and on current cosmological tensions
Measurement of inclusive dijet cross-sections in proton-proton collisions at TeV with the ATLAS detector
No full textInternational audienceInclusive dijet cross-sections have been measured in proton-proton collisions at a centre-of-mass energy of 13 TeV using data with an integrated luminosity of 140 fb, recorded by the ATLAS detector at the Large Hadron Collider during 2015-2018. Jets are identified using the anti- algorithm with a radius parameter of . The inclusive dijet double-differential cross-sections are measured first as a function of the invariant dijet mass and the half absolute rapidity separation between the two leading jets, , , and second as a function of the invariant dijet mass and the total longitudinal boost of the dijet system, , . The measured dijet system covers the invariant mass range from 240 GeV to almost 10 TeV, with dijet separation and dijet boost . The results are unfolded to the particle level and compared with state-of-the-art next-to-next-to-leading-order full colour perturbative QCD calculations, corrected for non-perturbative and electroweak effects
Acoustic radiation from vibrating plates using minimal modal sets of elementary sources
No full textThis work presents an efficient framework for approximating the acoustic radiation from vibrating plates using minimal sets of elementary point sources. The method is based on a modal description of the plate vibration, where the radiation from each lobe within a mode shape is represented by a single point source. Both baffled and unbaffled plate configurations can be handled using analogous expressions for arrays of either monopole or dipole sources, respectively. We also propose the use of image segmentation techniques, like the watershed transform, to enable the treatment of plates with arbitrary shape and/or boundary conditions in an automated fashion. Aside from the computation of modal radiation efficiencies, we extend the method to dealt with forced, multi-modal scenarios, applicable to both frequency and timedomain analysis. While the use of compact sets of sources makes the method formally a lowfrequency approximation for individual modal radiation, we show that its accuracy extends far beyond this nominal range in realistic, multi-modal scenarios. The merits and limitations of the approach are illustrated through several examples, where approximate solutions are benchmarked against reference results from either analytical or finite-element models. Beyond its evident benefits in computational efficiency, the method is readily compatible with conventional structural vibration models, since acoustic radiation is calculated directly from modal data, stemming from either models of experiments