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1. Impacts sur l’épidémiologie des maladies infectieuses et risques épidémiques émergents

   https://doi.org/10.1016/j.lpmfor.2021.10.012  

   Guégan, Jean-François (December 2021, La Presse Médicale Formation)
2. Volcanic and Topographic Evolution of the Sierra San Francisco, Baja California Sur, Mexico

   https://doi.org/10.1130/abs/2022CD-373847  

   HAUSBACK, Brian; GRANDY, Samuel; DORSEY, Rebecca J.; DARIN, Michael; BENNETT, Scott (April 2022, GSA Cordilleran 2022 Meeting)

   The Sierra San Francisco (SSF) is a Neogene volcanic range along the topographic crest of the Baja California peninsula in northern Baja California Sur, Mexico. The SSF is ~55 km long (NW-SE) and ~30 km wide and its highest peaks exceed 1500 m elevation. The SSF has a long history of volcanism and has been eroded by deep, rugged, radially-draining canyons. The development of SSF topography is intimately associated with the volcanic evolution of the range. The SSF is a large and complex dacitic adakite dome complex largely built of a thick, up to 800 m, stratigraphic succession of dacitic tuff breccias with minor interbedded basaltic andesite lavas. These deposits overlie rare exposures of aeolian sandstone of unknown age. The tuff breccias represent block-and-ash-flows and lahars generated from steep-sided peleean dacite and andesite domes, with three radiometric dates of 11-10 Ma. This intermediate sequence is unconformably capped by widespread bajaite mafic lavas, 5.5-4.5 Ma. SSF topography evolved dramatically since the late Miocene: 1) From 11-10 Ma, adakite domes erupted across the central SSF, locally along NNW faults. Thick sequences of bedded tuff breccias accumulated around the domes and are radially inclined away from source domes. The duration of this volcanism is unknown. 2) From 10-5 Ma, deep erosion of the pyroclastic strata formed a range-wide radial drainage network, with channel depths of up to 130 m or more. 3) From 5.5-4.5 Ma, voluminous bajaite lavas from cinder cones and dike vents flooded the top of the range and flowed down the radial drainages with flow distances up to 12 km. Vents are strongly aligned along steep NNW normal faults. 4) After 4.5 Ma, erosion removed interfluves of tuff breccia not armored by younger mafic lavas. Today, the long, steep-sided, lava-capped ridges are inverted topographically. At Santa Martha, an area in the central SSF with the highest concentration of domes, hydrothermal alteration of the volcanic deposits during and after the dome volcanism caused severe material weakening and slope failure within the volcanic center. The area is now a distinctive erosional basin, partly filled with clay-rich landslide deposits. Comparable volcanic history and topographic development are likely to have occurred in a dome field of similar age and size at Santa Agueda, 60 km SE of Santa Martha. 

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3. La educación en Ciencias de la Computación como una oportunidad para avanzar en la pedagogía bilingüe/translenguaje

   https://doi.org/10.47133/NEMITYRA2022100A10  

   S. Mortimer, Katherine; Akbar, Monika; Rodríguez, Romelia; Benítez, Patricia; Delgado, Pedro; Escandon, Sarah; Gray, Scott; Kneedler, Haleigh; Medrano, Victor; Ontiveros, Cynthia; et al (January 2022, ÑEMITỸRÃ Revista Multilingüe de Lengüa Sociedad y Educación)

   Theoretical understanding of bilingualism has advanced tremendously in recent decades, moving from colonialist understandings of named languages as static, separate entities to decolonializing conceptualizations of dynamic translanguaging (García, 2009)—or dynamic use of speakers’ whole linguistic repertoires to serve communicative needs. As we work to include this theoretical shift into teacher education and into instructional practice in diverse contexts, we ask what facilitates educators’ learning of new ways of seeing bilingualism and what gets in the way? This presentation examines adults’ learning experiences in a collaborative research project to use translanguaging pedagogy as a way to increase minoritized bilingual students’ access to computer science education. We —a team of teachers, administrators, teacher educators, and researchers working onthe US-Mexico border—use ethnographic data to explore how our beliefs about bilingualism and language in education surface and shift in the work. We discuss the potential of science education as a location and opportunity to advance educators’ understandings of holistic, dynamic bilingualism, and we draw connections to possibilities in science education in Paraguay. 

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4. Une ou deux composantes ? La réponse de la diffusion en ondelettes

   Lostanlen, V (August 2019, XXVIIème Colloque francophone de traitement du signal et des images)

   With the aim of constructing a biologically plausible model of machine listening, we study the representation of a multicomponent stationary signal by a wavelet scattering network. First, we show that renormalizing second-order nodes by their first-order parents gives a simple numerical criterion to establish whether two neighboring components will interfere psychoacoustically. Secondly, we generalize the “one or two components” framework to three sine waves or more, and show that a network of depth M = log2 N suffices to characterize the relative amplitudes of the first N terms in a Fourier series, while enjoying properties of invariance to frequency transposition and component-wise phase shifts. 

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5. Une ou deux composantes ? La réponse de la diffusion en ondelettes

   Lostanlen, Vincent (January 2019, Groupe d'Études en Traitement du Signal et Images (GRETSI) workshop)