130 research outputs found

    Integración de la teoría de las inteligencias múltiples en el aula de "Science"

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    En la sociedad actual, la adquisición de una lengua extranjera en la etapa de Educación Primaria es esencial. La integración de la Teoría de las Inteligencias Múltiples en el ámbito educativo se presenta como una propuesta innovadora hoy en día, que puede beneficiar la adquisición de los contenidos en el alumnado. Es por ello que, el presente Trabajo de Fin de Grado pretende, investigar sobre como la Teoría de las Inteligencias Múltiples puede favorecer en la adquisición de una lengua extranjera, inglés en este caso, en el alumnado de Educación Primaria. Por lo tanto, el objetivo de este trabajo es poder llevar a cabo el diseño de una propuesta de intervención en el aula, que desarrolle los contenidos de la asignatura: “Science” a través de la Teoría de las Inteligencias Múltiples.Grado en Educación Primari

    "EL ÁMBITO DEL FITNESS EN LA CIUDAD DE ZARAGOZA: Tipología de centros y actividades ofertadas"

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    En el presente trabajo, se estudia el sector del Fitness en la ciudad de Zaragoza, más concretamente las actividades dirigidas ofertadas en ellos, ya que se ha podido comprobar la escasa bibliografía existente en España sobre este sector. Debido a esto, el primer objetivo del trabajo era estimar el número de empresas dedicadas al sector del Fitness en la ciudad, ya que no hay un censo oficial, y por otro lado describir más detalladamente las características de las actividades dirigidas impartidas en ellos. Para llevar a cabo el estudio, se creó una nomenclatura propia a través de diferentes autores donde se integrasen todas las actividades ofertadas, y para la obtención del número de centros de Fitness, se siguió una metodología ya utilizada anteriormente en otros estudios. De este modo, se estimaron un total de 56 centros en Zaragoza que poseían una sala de musculación y al menos una sala de actividades dirigidas donde se impartían más de una actividad diferente, divididos en 5 tipologías de centros diferentes. En cuanto a las actividades, Pilates es la modalidad más repetida en el global de los centros, pero Ciclo indoor se podría considerar la actividad “estrella”, ya que es la más ofertada durante la semana de una manera clara.<br /

    Magnetic transition in nanocrystalline soft magnetic alloys analyzed via ac inductive techniques

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    The magnetic transition in a FeSiBCuNb nanocrystalline alloy, associated with the decoupling of ferromagnetic crystallites around the Curie point of the residual amorphous matrix, is analyzed in this work through the temperature dependence of the ac axial magnetic permeability and impedance of the samples. The temperature dependence of both complex magnitudes presents a maximum in the irreversible contribution at a certain transition temperature. While for low values of the exciting ac magnetic field the transition temperature lies below the Curie temperature of the amorphous phase, a shift above this Curie point is observed increasing the amplitude of the applied ac magnetic field. The detected field dependence is interpreted taking into account the ac nature of the inductive characterization techniques and the actual temperature dependence of the coercivity of the samples

    A Virtual Lab Environment For Improving Students’ Understanding Of Infiltration And Runoff Processes

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    Infiltration of water in the soil is a key process in the hydrological cycle and its understanding is paramount for students of any course related to Hydrology. Different equations exist, which, in function of boundary conditions and the level of detail required in any particular case can become complex to solve in an analytical way. Water movement in the soil can be described by the Richards equation, but its solution requires numerical methods. Therefore, amongst the most used ways of calculating water infiltration are the Green and Ampt method, Horton’s equation, Philip’s equation and the Curve Number method. In all these equations, different soil parameters intervene that can be measured in the field or estimated from soil properties. The understanding of the physical meaning of these parameters, their relative importance and of the differences between the abovementioned methods is important for students. Infiltration measurements in the field or lab are time-consuming. We therefore developed a tool that helps the students to calculate infiltration in a step-by-step way, and which helps to easily change the input parameter values so as to understand the importance of the different variables. This virtual lab environment was coded in Matlab and used for the first time during the academic year 2013-2014. In this study, we present the main characteristics of this didactic software tool and present an evaluation of its usefulness by students

    Comparison between Snow Albedo Obtained from Landsat TM, ETM+ Imagery and the SPOT VEGETATION Albedo Product in a Mediterranean Mountainous Site

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    Albedo plays an important role in snow evolution modeling quantifying the amount of solar radiation absorbed and reflected by the snowpack, especially in mid-latitude regions with semiarid conditions. Satellite remote sensing is the most extensive technique to determine the variability of snow albedo over medium to large areas; however, scale effects from the pixel size of the sensor source may affect the results of snow models, with different impacts depending on the spatial resolution. This work presents the evaluation of snow albedo values retrieved from (1) Landsat images, L (16-day frequency with 30 30 m pixel size) and (2) SPOT VEGETATION albedo products, SV (10-day frequency with 1 1 km pixel size) in the Sierra Nevada mountain range in South Spain, a Mediterranean site representative of highly heterogeneous conditions. Daily snow albedo map series were derived from both sources, and used as input for the snow module in the WiMMed (Watershed Integrated Management in Mediterranean Environment) hydrological model, which was operational at the study area for snow monitoring for two hydrological years, 2011–2012 and 2012–2013, in the Guadalfeo river basin in Sierra Nevada. The results showed similar albedo trends in both data sources, but with different values, the shift between both sources being distributed in space according to the altitude. This difference resulted in lower snow cover fraction values in the SV-simulations that affected the rest of snow variables included in the simulation. This underestimation, mainly due to the effects of mixed pixels composed by both snow and snow-free areas, produced higher divergences from both sources during the melting periods when the evapo-sublimation and melting fluxes are more relevant. Therefore, the selection of the albedo data source in these areas, where snow evapo-sublimation plays a very important role and the presence of snow-free patches is very frequent, can condition the final accuracy of the simulations of operational models; Landsat is the recommended source if the monitoring of the snowpack is the final goal of the modeling, whereas the SV product may be advantageous when water resource planning in the medium and long term is intended. Applications of large pixel size albedo sources need further assessment for short-term operational objective

    Évaluation des activités des entreprises grâces à des techniques multicritères : une analyse appliquée aux coopératives agroalimentaires valenciennes

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    [EN] Studying the performance of agricultural cooperatives has become increasingly important in recent years due to the significant role they play in the agricultural food sector. In this context, the purpose of this study is to obtain a performance index of agri-food cooperatives. The opportunity set comprises 42 companies from the Valencian Community region. Their financial statements were used as the primary information source. The additive index was computed by single price model (SPM) operations research methods that allow managerial behaviour to be ranked according to efficiency criteria, identifying the most efficient alternative and distinguishing it from the remaining alternatives in the ranking. This ranking is an aid to detecting leading positions over time.[ES] El estudio de la actuación de las cooperativas agrarias ha adquirido una importancia creciente en los últimos años dado el significativo papel que tienen en el sector agroalimentario. En este contexto se encuadra el presente estudio cuyo objeto es la obtención de un índice de desempeño para cooperativas del sector agroalimentario. El conjunto de oportunidad incluye 42 empresas de la Comunidad Valenciana, cuyas cuentas anuales se usan como fuentes primarias de información. El índice agregativo se calcula mediante técnicas de Investigación Operativa Single Price Model (SPM) que permiten jerarquizar el comportamiento empresarial según criterios de eficiencia identificando la alternativa más eficiente y distinguiéndola de las restantes alternativas del ranking. La jerarquización a través de este índice conduce a detectar posiciones de liderazgo a lo largo del tiempo.[FR] L’étude des activités des coopératives agricoles a vu son importance se développer au cours des dernières années, en raison du rôle significatif de ces dernières dans le secteur agroalimentaire. Cette étude, dont le but est d’obtenir un indice de performance des coopératives du secteur agroalimentaire, s’inscrit dans ce contexte particulier. L’ensemble de l’étude comprend 42 entreprises de la Communauté valencienne, dont les comptes annuels sont utilisés comme sources primaires d’informations. L’indice global se calcule grâce à des techniques de recherche opérationnelle Single Price Model (SPM), permettant de hiérarchiser le comportement des entreprises selon des critères d’efficacité, qui identifient l’option la plus efficace et la démarquent des autres options du classement. La hiérarchisation effectuée par cet indice permet de détecter des positions de leadership à long terme.Sarasa Pérez, CP.; Polo Garrido, F.; Seguí Mas, E. (2013). Valoración de la actuación empresarial mediante técnicas multicriterio: un análisis aplicado a cooperativas agroalimentarias valencianas. CIRIEC - España : Revista de Economía Pública, Social y Cooperativa. 77:131-153. http://hdl.handle.net/10251/50701S1311537

    Dietary Supplementation with Spray-Dried Porcine Plasma Attenuates Colon Inflammation in a Genetic Mouse Model of Inflammatory Bowel Disease

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    Dietary supplementation with spray-dried porcine plasma (SDP) can modulate the immune response of gut-associated lymphoid tissue. SDP supplementation reduces acute mucosal inflammation, as well as chronic inflammation associated with aging. The aim of this study was to analyze if SDP supplementation could ameliorate colitis in a genetic mouse model of inflammatory bowel disease (IBD). Wild-type mice and Mdr1a knockout (KO) mice were administered a control diet or an SDP-supplemented diet from day 21 (weaning) until day 56. The histopathological index, epithelial barrier, and intestinal immune system were analyzed in the colonic mucosa. KO mice had higher epithelial permeability, increased Muc1 and Muc4 expression, and lower abundance of E-cadherin and Muc2 (all p < 0.001). SDP prevented these effects (all p < 0.05) and decreased the colonic inflammation observed in KO mice, reducing neutrophil and monocyte infiltration and activation and the percentage of activated T helper lymphocytes in the colonic mucosa (all p < 0.05). SDP also diminished proinflammatory cytokine expression and increased the anti-inflammatory IL-10 concentration in the colonic mucosa (all p < 0.05). In conclusion, dietary supplementation with SDP enhances colon barrier function and reduces mucosal inflammation in a mouse model of IBD
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