The University of Edinburgh

Edinburgh, Scotland, United Kingdom

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School of GeoSciences
1,978
Total Impact Points
265
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School of Informatics
516
Total Impact Points
181
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School of Biological Sciences
1,715
Total Impact Points
176
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Publication History View all

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    ABSTRACT: Narrow-bore instruments are commonly perceived to be brighter than wide-bore models of the same kind of instrument. This effect is closely related to the effect of the bore profile of a brass instrument on the potential for non-linear propagation of sound within the tube. This paper reports on practical tests with trumpets of different bore diameters, experiments with loudspeaker excitation of instruments, and simulations. The brassiness curves of a range of low instruments with similar Brassiness Potential but differing in their absolute bore diameters are compared. The relative importance of the two effects is explored.
    01/2016;
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    ABSTRACT: Solar energy use in the UK is increasing dramatically, providing both heat energy and generation of electricity. This trend is expected to continue due to solar technologies becoming cheaper and more readily available along with low carbon government legislation such as the Renewable Heat Incentive (RHI) and Feed in Tariffs (FiTs) supporting solar energy deployment. However, the effects of climate change on the solar resource remain largely unstudied. Climate change affects cloud cover characteristics and consequently directly affects the performance of solar energy technologies. This paper investigates the UK solar irradiation resource for both the present and future climates. The present solar irradiation level was assessed through the conversion of 30 years of observed historical monthly average sunshine duration data. The method and results are validated by comparing the converted solar irradiation levels to actual solar irradiance measurements at weather stations with significant historical records of solar irradiance data. The impact of climate change is investigated across different regions of the UK by using the UKCP09 probabilistic climate change projections. We find that the current average UK annual solar resource is 101.2 Wm−2, ranging from 128.4 Wm−2 in the south of England to 71.8 Wm−2 in the northwest of Scotland. It seems likely that climate change will increase the average resource in the south of the UK, while marginally decreasing it in the Northwest. The overall effect is a mean increase of the UK solar resource, however it will have greater seasonal variability and discrepancies between geographical regions will be reinforced.
    Renewable Energy 11/2014; 71:333–343.
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    ABSTRACT: Multiple Sequence Alignment (MSA) constitutes an extremely power-ful tool for important biological applications such as phylogenetic anal-ysis, identification of conserved motifs and domains and structure pre-diction. In spite of the improvement in speed and accuracy introduced by MSA programs, the computational requirements for large-scale align-ments requires high performance computing and parallel applications. In this work, we have carried out a set of performance experiments, depend-ing on the size of the problem, the number of processors and Memory available. From these experiments, the current limits of scalability of the application under study have been analyse.

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    Drummond Street, EH8 9XP, Edinburgh, Scotland, United Kingdom
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