3,933 research outputs found

    Caloric vestibular stimulation in aphasic syndrome

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    Caloric vestibular stimulation (CVS) is commonly used to diagnose brainstem disorder but its therapeutic application is much less established. Based on the finding that CVS increases blood flow to brain structures associated with language and communication, we assessed whether the procedure has potential to relieve symptoms of post-stroke aphasia. Three participants, each presenting with chronic, unilateral lesions to the left hemisphere, were administered daily CVS for 4 consecutive weeks. Relative to their pre-treatment baseline scores, two of the three participants showed significant improvement on both picture and responsive naming at immediate and one-week follow-up. One of these participants also showed improved sentence repetition, and another showed improved auditory word discrimination. No adverse reactions were reported. These data provide the first, albeit tentative, evidence that CVS may relieve expressive and receptive symptoms of aphasia. A larger, sham-controlled study is now needed to further assess efficacy

    Training and Establishment Survival

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    We investigate the relationship between training and the likelihood of commercial survival over a 7-year period, using a survey of British establishments. We find that in stablishments of 200 or more employees, increased training of those in Professional, Sales, and Clerical and Secretarial occupations is associated with a greater chance of survival. In smaller establishments of less than 200 employees, increased training for Operatives and Assembly workers, Personal and Protective Service workers, and Craft and Technical workers is associated with better chances of survival. We interpret these findings as suggesting that training for these groups generated above-normal returns and indicates under-investment in training by such firms. There is no evidence to suggest under-investment in management training.training, survival, economic performance

    Integrated Hall Effect Sensor

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    Experiments relevant to the development an integrated Hall effect sensor have been performed. Carrier concentrations calculated from the Hall voltage generated in samples of bulk silicon did not agree veil with values measured by tour point probe or Van der Pauw techniques. However, the relationship between Hall voltage and magnetic field was highly linear and should produce a well behaved sensor. A sensor design has been proposed, but not fabricated

    The architecture hall for the Kansas State Agriculutral College

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    Citation: Wilkinson, William J. Specifications: material and labor to be employed in the erection of an agricultural hall for Kansas State Agriculutral College at Manhattan, Kansas.. Senior thesis, Kansas State Agricultural College, 1905.Morse Department of Special CollectionsIntroduction: Notice to Contractors. Sealed proposals will be received at this office according to conditions herein set forth and duly specified for the erection and completion of said building until the day of , 19 , at oclock. Drawings and specifications are the property of the architect. They must not be used for any other buildings and must be returned when the building is completed. The owner reserves the right to reject any and all bids

    A history of "Hymns ancient and modern"

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    When the first Edition was published in 1861, Hymns Ancient and Modern Was just one of many collections of hymns. However, it rapidly established itself as the most popular of all. The subject of this thesis is the way that the Proprietors reacted to this success by bringing out enlarged and revised editions until the publication of the New Standard Edition in 1983.The background and the compilation of the First Edition is only briefly touched upon (I) although some attempt will be made to analyse its characteristics. The first major episode to be covered in detail will be the 1904 Edition, in which the Proprietors made a radical attempt to revise and reform the Victorian book which had developed from the First Edition. This attempt was, by Hymns Ancient and Modern standards, a failure. This failure will be explained and analysed, and its effect on future policies of the Proprietors will be assessed. To a remarkable degree the Proprietors swung over to a cautious conservatism by further enlarging the Victorian book, in order to produce the Standard Edition of 1922.The imperative need for change, however, could not be resisted for ever, in particular when the challenge of other books such as the English Hymnal had to be faced. The result was Hymns Ancient and Modern Revised, published in 1950. This was a new book, but far more limited in its innovations than mi9ht have been the case. No such criticism could, however, be levelled against the two supplements, A Hundred Hymns for Today and More Hymns for Today which were published in 1969 and 1980. The thinking behind these radical publications and the excision of nearly half the hymns in Hymns Ancient and Modern Revised to form the New Standard Edition will be discussed.The role of such key personalities as Baker, Frere and Nicholson will be evaluated, likewise the deliberations of the present members of the Council of Hymns Ancient and Modern as they look to the future

    Radial Velocities of Newly Discovered Globular Clusters in NGC 5128

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    We present radial velocity measurements for 74 globular clusters (GCs) in the nearby giant elliptical NGC 5128, of which 31 are newly discovered clusters. All the GC candidates were taken from the list of possible new clusters given in the Harris, Harris, & Geisler (2004) photometric survey. In addition to the newly confirmed clusters, we identified 24 definite foreground stars and 31 probable background galaxies. From a combined list of 299 known GCs in NGC 5128 with measured radial velocities and metallicity-sensitive (C - T_1) photometric indices, we construct a new metallicity distribution function (MDF) for the cluster system. The MDF shows an approximately bimodal form, with centroids at [Fe/H] = -1.46 and -0.53, and with nearly equal numbers of metal-poor and metal-rich clusters in the two modes. However, there are many intermediate-color clusters in the distribution, and the fainter clusters tend to have a higher proportion of red clusters. These features of the MDF may indicate a widespread age range within the cluster system as well as an intrinsically broad metallicity spread.Comment: 10 pages, 7 figures, 4 tables - accepted in Astronomical Journa

    Blending bias impacts the host halo masses derived from a cross-correlation analysis of bright sub-millimetre galaxies

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    Placing bright sub-millimetre galaxies (SMGs) within the broader context of galaxy formation and evolution requires accurate measurements of their clustering, which can constrain the masses of their host dark matter halos. Recent work has shown that the clustering measurements of these galaxies may be affected by a `blending bias,' which results in the angular correlation function of the sources extracted from single-dish imaging surveys being boosted relative to that of the underlying galaxies. This is due to confusion introduced by the coarse angular resolution of the single-dish telescope and could lead to the inferred halo masses being significantly overestimated. We investigate the extent to which this bias affects the measurement of the correlation function of SMGs when it is derived via a cross-correlation with a more abundant galaxy population. We find that the blending bias is essentially the same as in the auto-correlation case and conclude that the best way to reduce its effects is to calculate the angular correlation function using SMGs in narrow redshift bins. Blending bias causes the inferred host halo masses of the SMGs to be overestimated by a factor of 6\sim6 when a redshift interval of δz=3\delta z=3 is used. However, this reduces to a factor of 2\sim2 for δz=0.5\delta z=0.5. The broadening of photometric redshift probability distributions with increasing redshift can therefore impart a mild halo `downsizing' effect onto the inferred host halo masses, though this trend is not as strong as seen in recent observational studies.Comment: 10 pages, 9 figures, 1 table. Accepted to MNRA

    A Haze on the Far Horizon

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