23,046 research outputs found

    A Multi-Phase Anglo-Saxon Site in Ewelme

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    New evidence is presented for a middle Anglo-Saxon ‘productive’ site on hilly ground north-west of Ewelme in south Oxfordshire. Coins and other finds from metal-detecting activity suggest the existence of an eighth- to ninth-century meeting or trading point located close to the Icknield Way. Th is place takes on an added significance because of its proximity to an early Anglo-Saxon cemetery and probably a late Anglo-Saxon meeting place. Th e authors provide an initial assessment of the site, its likely chronological development and its relationship with wider Anglo-Saxon activity in the upper Thames region and beyond. Some suggestions are made about the implications of the existence of such a long-lasting or recurring centre of activity for early medieval inhabitants’ perceptions of landscape

    Developing leading-edge staff in vocational education and training

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    Multiple light source detection.

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    A Denotational Semantics for SPARC TSO

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    The SPARC TSO weak memory model is defined axiomatically, with a non-compositional formulation that makes modular reasoning about programs difficult. Our denotational approach uses pomsets to provide a compositional semantics capturing exactly the behaviours permitted by SPARC TSO. It uses buffered states and an inductive definition of execution to assign an input-output meaning to pomsets. We show that our denotational account is sound and complete relative to the axiomatic account, that is, that it captures exactly the behaviours permitted by the axiomatic account. Our compositional approach facilitates the study of SPARC TSO and supports modular analysis of program behaviour

    An evaluation of the workbook for health trainers in prisons and the wider community: based on the Royal Institute of Public Health Level 2 award: understanding health improvement

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    Health trainers form part of a public policy initiative designed to tackle health inequalities. Health Trainers were first proposed in the White Paper ‘Choosing Health’ (2004) and initially some 1200 NHS accredited Health Trainers were placed in post, providing support in key Primary Care Trust areas with the most challenging health and deprivation indicators. The North West and East Midlands Health Trainer Hubs have developed initiative further within the Prison and National Probation Services with the production of a workbook to support prisoners in their attainment of the award. A team from Sheffield Hallam University were commissioned to conduct a brief consultation exercise to ensure that prison staff delivering the initiative, and prisoners who have completed the training in custody were given the opportunity to contribute to the design and content of the workbook

    Speech Enhancement Using An {MMSE} Spectral Amplitude Estimator Based On A Modulation Domain Kalman Filter With A Gamma Prior

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    In this paper, we propose a minimum mean square error spectral estimator for clean speech spectral amplitudes that uses a Kalman filter to model the temporal dynamics of the spectral amplitudes in the modulation domain. Using a two-parameter Gamma distribution to model the prior distribution of the speech spectral amplitudes, we derive closed form expressions for the posterior mean and variance of the spectral amplitudes as well as for the associated update step of the Kalman filter. The performance of the proposed algorithm is evaluated on the TIMIT core test set using the perceptual evaluation of speech quality (PESQ) measure and segmental SNR measure and is shown to give a consistent improvement over a wide range of SNRs when compared to competitive algorithms

    Estimation of glottal closure instants in voiced speech using the DYPSA algorithm

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