Robótica virtual ou robótica tangível, qual a ferramenta mais apelativa para os professores e alunos? Fomos à procura da resposta junto de cinco alunos que participaram em atividades com estas duas ferramentas. As atividades foram desenvolvidas no

Large-area electronics for applications in environments with radioactive contamination or medical X-ray detectors require materials and devices resistant to continuous ionizing radiation exposure. Here the superior X-ray radiation hardness of oxide thin film transistors (TFTs) based on gallium-indium-zinc oxide is demonstrated, when compared to organic ones. In the experiments both TFTs are subjected to X-ray radiation and their performances are monitored as a function of total ionizing dose. Flexible oxide TFTs maintain a constant mobility of 10 cm2 V−1 s−1 even after exposure to doses of 410 krad(SiO2), whereas organic TFTs lose 55% of their transport performance. The exceptional resistance of oxide semiconductors ionization damage is attributed to their intrinsic properties such as independence of transport on long-range order and large heat of formation. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Presentamos en este trabajo un estudio realizado en dos escuelas públicas, una en Brasil y otra en Portugal, sobre el potencial integrador de la robótica virtual y tangible. El enfoque metodológico se mezcló y se basó en dos talleres de capacitación de profesores sobre el potencial integrador de estas dos herramientas. Los participantes fueron cuatro profesores y cuatro estudiantes con necesidades educativas especiales. Se aplicó un cuestionario a los estudiantes y profesores que participaron en los talleres de formación y se procedió a la descripción de las actividades. Los resultados indicaron que las dos herramientas obtuvieron evaluaciones similares, que tienen potencial educativo e integrador, ya que permiten suavizar las diferencias y promover la cooperación y el aprendizaje de modo activo y significativo, a través de actividades lúdicas y divertidas para los estudiantes.

Abstract This work presents an experimental study on the effect of ply-level hybridisation on the tensile unnotched and notched response of composite laminates. In a first assessment, notched tests were performed on laminates with nominal ply thicknesses between 0.03 mm and 0.30 mm. From the understanding of the effect of ply thickness on the damage mechanisms that govern the notched response of laminates, the concept of ply-level hybridisation is introduced, which consists in combining plies of different grades. A uniform combination of thin and conventional plies resulted in a hybrid laminate with intermediate notched response. Selective hybridisation, where thin off-axis plies are combined with thicker 0° plies, resulted in a globally enhanced notched behaviour without compromising the unnotched and fatigue responses. This work clearly shows how ply-level hybridisation, when designed to trigger specific damage mechanisms, can be used to improve the notched response of composite laminates.