Search results for "51"
showing 10 items of 3506 documents
Los refuerzos visuales en la educación bilingüe. Experiencias en una escuela de Texas
2014
Este trabajo presenta tres actividades didácticas y una propuesta de evaluación para mejorar el aprendizaje del vocabulario científico en contextos de educación bilingüe. Investigaciones recientes han demostrado que el uso de imágenes es una manera natural y útil de adquirir el vocabulario en una L2 (Comesaña et al. , 2009; Mayén, 2013). Además, estudios realizados tanto en la educación regular (Arnheim, 2013), como en una segunda lengua (Parkinson, 2012), han demostrado que el vocabulario técnico y científico frecuentemente se entiende y recuerda mejor a través del uso de imágenes y vídeos. El presente estudio se basa en la observación realizada en clase por parte de un profesor de Ciencia…
The evolution of Military Health in Valencia during the Spanish Civil War (1936-1939)
2011
Antecedentes y objetivos: Tras la insurrección militar del 18 de julio de 1936 el Ejército de la República quedó parcialmente desarticulado, resultando afectada la Sanidad Militar. En el caso de Valencia, ésta fue asumida rápidamente por el Comité Sanitario Popular, un organismo revolucionario que lideró la respuesta sanitaria de Valencia a la Guerra Civil. Posteriormente, el Gobierno Republicano procedió a recuperar el poder a través de medidas de carácter centralizador, como fue la militarización de algunos hospitales. Fue entonces cuando volvió a articularse una auténtica Sanidad Militar. El objetivo de este trabajo es estudiar la evolución de la Sanidad Militar en Valencia, una de las z…
Health coverage for a retreating army: a Medical Captain’s action during the Maestrazgo campaign (April-July 1938).
2012
espanolAntecedentes y objetivos: Tras la entrada definitiva de las tropas del general Franco en la ciudad de Teruel en febrero de 1938 se inicio la retirada progresiva del Ejercito de Maniobra de la republica. El rapido avance de las fuerzas nacionales hacia el Mediterraneo marco las caracteristicas de la cobertura sanitaria militar. El objetivo de este trabajo es realizar una aproximacion a la Sanidad del Ejercito republicano durante su retirada por el Maestrazgo castellonense, que tuvo lugar entre abril y julio de 1938 en el contexto de la Guerra Civil Espanola (1936-1939). Material y metodos: Hemos utilizado una fuente de gran valor historico, como es el testimonio oral de un Capitan Med…
Constraining Uncertainty in Projected Gross Primary Production With Machine Learning
2020
The terrestrial biosphere is currently slowing down global warming by absorbing about 30% of human emissions of carbon dioxide (CO2). The largest flux of the terrestrial carbon uptake is gross primary production (GPP) defined as the production of carbohydrates by photosynthesis. Elevated atmospheric CO2 concentration is expected to increase GPP (“CO2 fertilization effect”). However, Earth system models (ESMs) exhibit a large range in simulated GPP projections. In this study, we combine an existing emergent constraint on CO2 fertilization with a machine learning approach to constrain the spatial variations of multimodel GPP projections. In a first step, we use observed changes in the CO2 sea…
Extreme precipitation events over northern Italy. Part II : Dynamical precursors
2021
The connection between weather extremes and Rossby wave packets (RWP) has been increasingly documented in recent years. RWP propagation and characteristics can modulate the midlatitude weather, setting the scene for temperature and precipitation extremes and controlling the geographical area affected. Several studies on extreme precipitation events (EPEs) in the Alpine area reported, as the main triggering factor, a meridionally elongated upper‐level trough as part of an incoming Rossby wave packet. In this work, we investigate a wide number of EPEs occurring between 1979 and 2015 in northern‐central Italy. The EPEs are subdivided into three categories (Cat1, Cat2, Cat3) according to thermo…
Persistent link between Caribbean precipitation and Atlantic Ocean circulation during the Last Glacial revealed by a speleothem record from Puerto Ri…
2020
The sensitivity of tropical Atlantic precipitation patterns to the mean position of the Intertropical Convergence Zone (ITCZ) at different time scales is well‐known. However, recent research suggests a more complex behavior of the northern hemispheric tropical rain belt related to the ITCZ in the western tropical Atlantic. Here we present a precisely dated speleothem multi‐proxy record from a well‐monitored cave in Puerto Rico, covering the period between 46.2 and 15.3 ka. The stable isotope and trace element records document a pronounced response of regional rainfall to abrupt climatic excursions in the North Atlantic across the Last Glacial such as Heinrich stadials and Dansgaard/Oeschger…
Widening of Hydrous Shear Zones During Incipient Eclogitization of Metastable Dry and Rigid Lower Crust—Holsnøy, Western Norway
2021
The partially eclogitized crustal rocks on Holsnøy in the Bergen Arcs, Norway, indicate that eclogitization is caused by the interplay of brittle and ductile deformation promoted by fluid infiltration and fluid‐rock interaction. Eclogitization generated an interconnected network of millimeter‐to‐kilometer‐wide hydrous eclogite‐facies shear zones, which presumably caused transient weakening of the mechanically strong lower crust. To decipher the development of those networks, we combine detailed lithological and structural mapping of two key outcrops with numerical modeling. Both outcrops are largely composed of preserved granulite with minor eclogite‐facies shear zones, thus representing th…
Synaptic scaling generically stabilizes circuit connectivity
2011
Neural systems regulate synaptic plasticity avoiding overly strong growth or shrinkage of the connections, thereby keeping the circuit architecture operational. Accordingly, several experimental studies have shown that synaptic weights increase only in direct relation to their current value, resulting in reduced growth for stronger synapses [1]. It is, however, difficult to extract from these studies unequivocal evidence about the underlying biophysical mechanisms that control weight growth. The theoretical neurosciences have addressed this problem by exploring mechanisms for synaptic weight change that contain limiting factors to regulate growth [2]. The effectiveness of these mechanisms i…
Designing the 5G network infrastructure: a flexible and reconfigurable architecture based on context and content information
2018
5G networks will have to offer extremely high volumes of content, compared to those of today’s. Moreover, they will have to support heterogeneous traffics, including machine-to-machine, generated by a massive volume of Internet-of-Things devices. Traffic demands will be variable in time and space. In this work, we argue that all this can be achieved in a cost-effective way if the network is flexible and reconfigurable. We present the Flex5Gware network architecture, designed to meet the above requirements. Moreover, we discuss the links between flexibility and reconfigurability, on the one side, and context awareness and content awareness, on the other; we show how two of the building…
CCDC 1913148: Experimental Crystal Structure Determination
2019
Related Article: Hongxin Chai, Zhi-Sheng Pan, Liu-Pan Yang, Shan He, Fangfang Pan, Kari Rissanen, Wei Jiang|2019|Chem.Commun.|55|7768|doi:10.1039/C9CC03341F