5,731 research outputs found

    O assistente social como mediador cultural em escolas públicas dos bairros de Guamá e Terra firme

    Get PDF
    I Congresso Internacional América Latina e Interculturalidade: América Latina e Caribe: cenários linguístico-culturais contemporâneos, 07, 08 e 09 de novembro de 2013 - UNILAA intervenção do Assistente Social nas atividades de arte e cultura nas instituições de ensino fundamental e médio nos bairros do Guamá e da Terra Firme. Estudos anteriores constatam que estes não são apenas espaços de violência, como registra a mídia. São espaços multiculturais e agregadores de cultura antiviolência, onde os sujeitos artistas utilizam a arte como meio de transformação social, através do método fenomenológico busco contribuir para a sistematização da intervenção do assistente social na área da educação e cultura, identificando as atividades de arte e cultura nas instituições de ensino fundamental e médio, importância nas instituições em que são desenvolvidas e habilidades requeridas ao profissional de Serviço Social. A metodologia conduziu a investigação nos respectivos bairros com os alunos que estudam nas instituições de ensino fundamental e médio nos bairros, por meio de aplicação de questionários sócio­econômico­cultural que ao definir cultura identificaram as manifestações culturais que estavam ocorrendo no mês (junho/2013) em que o questionário foi aplicado, quanto ao fazer profissional do Serviço Social, a maioria dos alunos da escola pública estadual relacionam o trabalho do assistente social com a prestação de ajuda e auxílio. Os alunos da escola pública federal demonstraram maior efetividade e segurança na resposta, em consonância com o Código de Ética do Assistente Social, também foi realizada entrevista semi­estruturada com a Assistente Social das instituições de ensino. Segundo a pesquisa identifica­se a sobrecarga do profissional do serviço social com as demandas postas pelos alunos no processo de ensino e aprendizagem, de tal modo que não possa acompanhar atividades de arte e cultura desenvolvidas nas instituições de ensino, e por meio de levantamentos bibliográficos e visitas de observação ao local de pesquisa foi possível identificar as atividades, projetos de extensão de arte e cultura nas instituições de ensino

    On Determining Dead Layer and Detector Thicknesses for a Position-Sensitive Silicon Detector

    Get PDF
    In this work, two particular properties of the position-sensitive, thick silicon detectors (known as the "E" detectors) in the High Resolution Array (HiRA) are investigated: the thickness of the dead layer on the front of the detector, and the overall thickness of the detector itself. The dead layer thickness for each E detector in HiRA is extracted using a measurement of alpha particles emitted from a 212^{212}Pb pin source placed close to the detector surface. This procedure also allows for energy calibrations of the E detectors, which are otherwise inaccessible for alpha source calibration as each one is sandwiched between two other detectors. The E detector thickness is obtained from a combination of elastically scattered protons and an energy-loss calculation method. Results from these analyses agree with values provided by the manufacturer.Comment: Accepted for publication in Nuclear Instruments and Methods in Physics Researc

    Measurement of Cosmic-ray Muons and Muon-induced Neutrons in the Aberdeen Tunnel Underground Laboratory

    Get PDF
    We have measured the muon flux and production rate of muon-induced neutrons at a depth of 611 m water equivalent. Our apparatus comprises three layers of crossed plastic scintillator hodoscopes for tracking the incident cosmic-ray muons and 760 L of gadolinium-doped liquid scintillator for producing and detecting neutrons. The vertical muon intensity was measured to be Iμ=(5.7±0.6)×106I_{\mu} = (5.7 \pm 0.6) \times 10^{-6} cm2^{-2}s1^{-1}sr1^{-1}. The yield of muon-induced neutrons in the liquid scintillator was determined to be Yn=(1.19±0.08(stat)±0.21(syst))×104Y_{n} = (1.19 \pm 0.08 (stat) \pm 0.21 (syst)) \times 10^{-4} neutrons/(μ\mu\cdotg\cdotcm2^{-2}). A fit to the recently measured neutron yields at different depths gave a mean muon energy dependence of Eμ0.76±0.03\left\langle E_{\mu} \right\rangle^{0.76 \pm 0.03} for liquid-scintillator targets.Comment: 14 pages, 17 figures, 3 table

    Application of Information Theory in Nuclear Liquid Gas Phase Transition

    Full text link
    Information entropy and Zipf's law in the field of information theory have been used for studying the disassembly of nuclei in the framework of the isospin dependent lattice gas model and molecular dynamical model. We found that the information entropy in the event space is maximum at the phase transition point and the mass of the cluster show exactly inversely to its rank, i.e. Zipf's law appears. Both novel criteria are useful in searching the nuclear liquid gas phase transition experimentally and theoretically.Comment: 5 pages, 5 figure

    Interdiffusion: A probe of vacancy diffusion in III-V materials

    Get PDF
    Copyright 1997 by the American Physical Society. Article is available at

    KATANA - a charge-sensitive triggering system for the Sπ\piRIT experiment

    Full text link
    KATANA - the Krakow Array for Triggering with Amplitude discrimiNAtion - has been built and used as a trigger and veto detector for the Sπ\piRIT TPC at RIKEN. Its construction allows operating in magnetic field and providing fast response for ionizing particles, giving the approximate forward multiplicity and charge information. Depending on this information, trigger and veto signals are generated. The article presents performance of the detector and details of its construction. A simple phenomenological parametrization of the number of emitted scintillation photons in plastic scintillator is proposed. The effect of the light output deterioration in the plastic scintillator due to the in-beam irradiation is discussed.Comment: 14 pages, 11 figure

    The Impact of dose heterogeneity on late normal tissue complication risk after hypofractionated whole breast radiotherapy

    No full text
    Background and purpose: linear quadratic models predict that hypofractionation increases the biological effect of physical dose inhomogeneity. The clinical significance of this effect was tested retrospectively in a trial of adjuvant breast hypofractionation.Methods: the UK FAST trial randomised 915 women after breast conservation surgery between standard fractionation and two dose levels of a 5-fraction regimen delivering 5.7 or 6.0 Gy fractions in 5 weeks, using 3D dosimetry. Logistic regression tested for association between the absolute volumes receiving different isodose level >100% of prescribed dose (hotspots) and the risk of change in 2-year photographic breast appearance. The strength of this association was compared between control and hypofractionated groups.Results: three hundred and ninety datasets from 11 participating centres were available for analysis. At 2 years post-randomisation, 81 (20.8%) had mild change and 24 (6.2%) had marked change in photographic breast appearance. After adjusting for breast size and surgical deficit, there was no statistically significant association between the risk of 2-year change in breast appearance and dose inhomogeneity in either the control or hypofractionated schedules, according to the various definitions of hotspots analysed. The magnitude of the effect of dosimetry on 2-year change in breast appearance did not vary significantly between control and hypofractionated schedules for any of the dosimetry parameters (p > 0.05 for all heterogeneity tests).Conclusion: dose inhomogeneity had no greater impact on the risk of 2-year change in photographic breast appearance after hypofractionated breast radiotherapy than after standard fractionatio

    Determination of energy-dependent neutron backgrounds using shadow bars

    Full text link
    Understanding the neutron background is essential for determining the neutron yield from nuclear reactions. In the analysis presented here, the shadow bars are placed in front of neutron detectors to determine the energy dependent neutron background fractions. The measurement of neutron spectra with and without shadow bars is important to determine the neutron background more accurately. The neutron background, along with its sources and systematic uncertainties, are explored with a focus on the impact of background models and their dependence on neutron energy.Comment: 7 pages, 10 figure
    corecore