Políticas sobre la integración de las TIC en la escuela de la Comunidad Autónoma del País Vasco

[ES]En la Comunidad Autónoma Vasca se han tomado una serie de decisiones estratégicas materializadas en diversas políticas, planes institucionales e iniciativas con el objeto de integrar, usar e innovar con TIC en las escuelas. Desde iniciativas pretéritas centradas básicamente en la dotación de infraestructuras, pasando por el perfeccionamiento del profesorado, actualmente existe un modelo que intenta unir de facto la política de infraestructura y la formación del los docentes para una utilización eficiente de las TIC. La descripción y el análisis del impacto de las mismas en el entorno escolar es el objetivo de esta investigación. En este estudio se ha llevado a cabo una metodología de corte cualitativo basada en la recogida de ideas, opiniones y valoraciones de políticos, técnicos, directores de centros, así como de profesores mediante entrevistas en profundidad (N=25). Los diferentes agentes educativos entrevistados reconocen que a día de hoy el modelo propuesto que unifica lo tecnológico, lo psicopedagógico y lo organizativo adolece de falta de información eficaz y de financiación impidiendo claramente un impacto real en las escuelas.

Sostenibilidad de las propuestas de suelo para nuevos desarrollos residenciales en la planificación territorial de Bizkaia

[ES] Este trabajo analiza la sostenibilidad de la Planificación Territorial de Bizkaia en relación al parámetro consumo de suelo. Para ello se estudian las propuestas realizadas por los Planes Territoriales Parciales en materia de nuevo suelo residencial destinado a acoger las necesidades de vivienda de los municipios incluidos en sus respectivas Áreas Funcionales.

Parametric Study of the Device Angle Dependency of a Single Vortex Generator on a Flat Plate

Ponencia presentada en el 10th World Congress on Computational Mechanics (WCCM 2012), Sao Paulo (Brazil).Publicados los abstracts en documento con ISBN: 978-85-86686-69-6.

Euskararen normalizazioa hezkuntzan (2000-2010) : Ulibarri programa, euskarri teorikoa, metodologia eta faktore azalgarriak

422 p.

Critical current anisotropy in high temperature superconductors

After nearly 15 years of research effort, High Temperature Superconductors (HTS) are finding a wide range of practical applications. A clear understanding of the factors controlling the current carrying capacity of these materials is a prerequisite to their successful technological development. The critical current density (Jc) in HTS is directly dependent on the structure and pinning of the Flux Line Lattice (FLL) in these materials. This thesis presents an investigation of the Jc anisotropy in HTS. The use of thin films grown on off c-axis (vicinal) substrates allowed the effect of current directions outside the cuprate planes to be studied. With this experimental geometry Berghuis, et al. (Phys. Rev. Lett. 79, 12, pg. 2332) observed a striking flux channelling effect in vicinal YBa2Cu3O7-δ (YBCO) films. By confirming, and extending, this observation, it is demonstrated that this is an intrinsic effect. The results obtained, appear to fit well with the predictions of a field angle dependent cross-over from a three dimensional rectilinear FLL to a kinked lattice of strings and pancakes. The pinning force density for movement of strings inside the cuprate planes is considerably less than that on vortex pancake elements. When the FLL is entirely string-like this reduced pinning leads to the observed channelling minima. It is observed that anti-phase boundaries enhance the Jc in vicinal YBCO films by strongly pinning vortex strings. The effect on the FLL structure cross-over of increasing anisotropy has been elucidated using de-oxygenated vicinal YBCO films. Intriguingly, the counter intuitive prediction that the range of applied field angle for which the kinked lattice is fully developed reduces with increasing anisotropy, appears to be confirmed. Although vortex channelling cannot be observed in c-axis YBCO films, the pinning force density for vortex string channelling has been extracted by observing string dragging. By studying the effect of rotating the applied field at a constant angle to the cuprate planes, it is possible to observe the cross-over into the string pancake regime in c-axis films. In the 3D region, the observed behaviour is well explained by the anisotropic Ginzburg-Landau model. Measurements were also made on thin films of the much more anisotropic Bi 2Sr2CaCu2O8+x material, grown on vicinal substrates. The absence of any flux channelling effect and clear adherence to the expected Kes-Law behaviour in the observed Jc characteristics does not provide evidence for the existence of the predicted ‘crossing lattice’ in Bi 2Sr2CaCu2O8+x .

Planificando la movilidad en Vitoria-Gasteiz : actuaciones innovadoras frente a limitaciones estructurales

En este artículo se analiza la planificación de la movilidad en Vitoria-Gasteiz, una ciudad con un destacado compromiso a favor del medio ambiente. El análisis aborda los principales elementos innovadores del Plan de Movilidad Sostenible y Espacio Público, destacando su impacto sobre el patrón de movilidad y la recualificación del espacio público. No obstante, se subrayan las limitaciones con que se encuentran las políticas de movilidad en la medida en que no se consideran un elemento estratégico en la planificación de la ciudad.

Las estrategias competitivas de los operadores de transporte marítimo de contenedores en línea regular

459 p.

Twinning partial multiplication at grain boundary in nanocrystalline fcc metals

Most deformation twins in nanocrystalline face-centered cubic fcc metals have been observed to form from grain boundaries. The growth of such twins requires the emission of Shockley partials from the grain boundary on successive slip planes. However, it is statistically improbable for a partial to exist on every slip plane. Here we propose a dislocation reaction and cross-slip mechanism on the grain boundary that would supply a partial on every successive slip plane for twin growth.This mechanism can also produce a twin with macrostrain smaller than that caused by a conventional twin.

Growth of deformation twins in room-temperature rolled nanocrystalline nickel

Deformation twinning has been observed in room-temperature rolled nanocrystalline Ni. The growth of the deformation twins via the emission of partial dislocations from a grain boundary has been examined in detail. Partial dislocations on neighboring slip planes may migrate for different distances and then remain in the grain interior, leading to the formation of a steplike twin boundary TB . With continued twin growth, the TBs become gradually distorted and lose their coherent character due to accumulated high stresses. Moreover, we propose that microtwins may form near such TBs due to the emission of partial dislocations from the TB.

Effects of wall temperature on boundary layer stability over a blunt cone at Mach 7.99

Effects of wall temperature on stabilities of hypersonic boundary layer over a 7-degree half-cone-angle blunt cone are studied by using both direct numerical simulation (DNS) and linear stability theory (LST) analysis. Four isothermal wall cases with Tw/T0= 0.5, 0.7, 0.8 and 0.9, as well as an adiabatic wall case are considered. Results of both DNS and LST indicate that wall temperature has significant effects on the growth of disturbance waves. Cooling the surface accelerates unstable Mack II mode waves and decelerates the first mode (Tollmien–Schlichting mode) waves. LST results show that growth rate of the most unstable Mack II mode waves for the cases of cold wall Tw/T0=0.5 and 0.7 are about 45% and 25% larger than that for the adiabatic wall, respectively. Numerical results show that surface cooling modifies the profiles of rdut/dyn and temperature in the boundary layers, and thus changes the stability haracteristic of the boundary layers, and then effects on the growth of unstable waves. The results of DNS indicate that the disturbances with the frequency range from about 119.4 to 179.1 kHz, including the most unstable Mack modes, produce strong mode competition in the downstream region from about 11 to 100 nose radii. And adiabatic wall enhances the amplitudes of disturbance according to the results of DNS, although the LST indicates that the growth rate of the disturbance of cold wall is larger. That because the growth of the disturbance does not only depend on the development of the second unstable mode.