29 research outputs found

    Ready, steady, learn: school readiness and children’s voices in English early childhood settings

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    Internationally, school readiness is increasingly the rationale for early childhood education and care. This is the case in England, yet the statutory English Early Years Foundation Stage framework for children 0-5 years also requires practitioners to listen to children’s voices: discourse indicates dissonance between school readiness and listening to children’s voices so this paper discusses an intrinsic case study that investigated beliefs and practices of 25 practitioners in the English midlands regarding school readiness and listening to children’s voices. In survey responses and semi-structured interviews, practitioners indicated they listen to – and act on – children’s voices but are confused about school readiness; their beliefs and practices align more strongly with social pedagogy than pre-primary schoolification. Findings carry messages for policymakers regarding the need for coherent policy concerning the purpose of early childhood education and care, with practitioner training and a framework aligned fully with that policy. A larger study is indicated

    New System for the Acceleration of the Airflow in Wind Turbines

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    Background: This patent is based on the wind industry technology called Diffuser Augmented Wind Turbines (DAWTs). This technology consists of a horizontal axis wind turbine, which is housed inside a duct with diverging section in the direction of the free air stream. In this paper, a review of preceding patents related to this technology is carried out. Objective: This paper presents an innovative patent to improve the performance of horizontal axis wind turbines. In particular, this system is aimed at improving the performance of those turbines that otherwise might not be installed due to the low wind resource existing at certain locations. Methods: The most innovative elements of this patent are: (1) the semi-spherical grooves, which are mechanized on the surface of the two diffusers in order to guarantee a more energetic boundary layer; (2) the coaxial diffuser, which is located downwind following the first diffuser in order to increase the suction effect on the air mass close to the inlet; (3) the coaxial rings located around the first diffuser outlet, which are used to deflect the external airflow toward the turbine wake; and (4), the selforientating system to orientate the system by the prevailing wind direction. Results: An application of the patent for increasing the power generated by a horizontal axis wind turbine with three blades is presented. The patent is designed and its performance is evaluated by using a Computational Fluid Dynamics code. The numerical results show that this system rises the airflow going through the rotor of the turbine. Conclusion: The patented device is an original contribution aimed at enabling a more profitable installation of wind turbines in places where the wind resource is insufficient because of the wind shear caused both by the proximity of the earth and the obstacles on the earth surface.This work was supported by the OASIS Research Project that was cofinanced by CDTI (Spanish Science and Innovation Ministry) and developed with the Spanish companies: Iridium, OHL Concesiones, Abertis, Sice, Indra, Dragados, OHL, Geocisa, GMV, Asfaltos Augusta, Hidrofersa, Eipsa, PyG, CPS, AEC and Torre de Comares Arquitectos S.L and 16 research centres. The authors also acknowledge the partial funding with FEDER funds under the Research Project FC-15-GRUPIN14-004. Finally, we also thank Swanson Analysis Inc. for the use of ANSYS University Research programs as well as the Workbench simulation environment
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