2,296 research outputs found

    6C radio galaxies at z~1: The influence of radio power on the alignment effect

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    Powerful radio galaxies often display enhanced optical/UV continuum emission and extended emission line regions, elongated and aligned with the radio jet axis. The expansion of the radio source strongly affects the gas clouds in the surrounding IGM, and the kinematic and ionization properties of the extended emission line regions display considerable variation over the lifetime of individual sources, as well as with cosmic epoch. We present the results of deep rest-frame UV and optical imaging and UV spectroscopy of high redshift 6C radio galaxies. The interdependence of the host galaxy and radio source properties are discussed, considering: (i) the relative contribution of shocks associated with the expanding radio source to the observed emission line gas kinematics, and their effect on the ionization state of the gas; (ii) the similarities and differences between the morphologies of the host galaxies and aligned emission for a range of radio source powers; and (iii) the influence of radio power on the strength of the observed alignment effect.Comment: LaTeX, 6 pages, 5 figures, Elsevier Science format. To appear in "Radio galaxies: past, present & future". eds. M. Jarvis et al., Leiden, Nov 200

    Towards the disintermediation of creative music search: Analysing queries to determine important facets

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    Purpose: Creative professionals search for music to accompany moving images in films, advertising, television. Some larger music rights holders (record companies and music publishers) organise their catalogues to allow online searching. These digital libraries are organised by various subjective musical facets as well as by artist and title metadata. The purpose of this paper is to present an analysis of written queries relating to creative music search, contextualised and discussed within the findings of text analyses of a larger research project whose aim is to investigate meaning making in this search process. Method: A facet analysis of a collection of written music queries is discussed in relation to the organisation of the music in a selection of bespoke search engines. Results: Subjective facets, in particular Mood, are found to be highly important in query formation. Unusually, detailed Music Structural aspects are also key. Conclusions: These findings are discussed in relation to disintermediation of this process. It is suggested that there are barriers to this, both in terms of classification and also commercial / legal factors

    What are the options for library and information studies education reform in addressing racial inequity in the library profession in the UK?

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    This work explores international research into library and information studies (LIS) education as part of the diversity, equity, inclusion and access (DEIA) agenda and identifies options for LIS education reform in addressing racial inequity in the library profession in the UK. The paper sets out the UK legal, higher education and LIS education contexts, focussing on the role of the professional association, accreditation and the curriculum, and the library and information workforce, and highlights current practices in DEIA in the UK. Using a methodology drawn from bibliometric approaches, a set of academic and professional articles related to DEIA and the LIS curriculum are analysed and nine interpretative repertoires are then identified and discussed. Four core mature repertoires concentrate on the professional association, the university, LIS faculty and the curriculum. These core clusters are surrounded by emerging repertoires which are more recent and more critical. Each repertoire is discussed, referring to key sources and authors to present a picture of trends and complexity in recent (2000–2022) literature on the topic. The aim of this work is to provide a detailed view of existing practice in LIS education relating to DEIA. LIS schools are a vital part of the professional pathway: without a qualification there is no profession, and university students are more-often-than-not drawn from the more privileged and wealthier sectors of society. It is recommended that LIS schools recruit students and faculty who reflect communities and develop the abilities of students to serve the communities they may or may not reflect. These are categorized into clusters, in an attempt to inform LIS education reform in the UK

    Information literacy

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    Deep spectroscopy of a young radio source at z=0.521

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    9C J1503+4528 is a very young CSS radio galaxy, with an age of order 10^4 years. This source is an ideal laboratory for the study of the intrinsic host galaxy/IGM properties, radio source interactions, evidence for young stellar populations and the radio source triggering mechanism. Here we present the results of a spectroscopic analysis of this source, considering each of these aspects of radio source physics.Comment: 4 pages, 2 figures, to be published in Astronomische Nachrichte

    Music in the Movies: an investigation into Creative Music Search

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    Music is widely used to accompany moving images. Just turn on the television and shut your eyes to experience this. Movie soundtracks enhance the viewers experience, TV commercials use music to communicate brand values and attract the attention of the viewer, and TV programs feature a wide range of music throughout. Much of this music is not composed specifically for this purpose but has another life in the commercial market place. The owners of these recordings and compositions are making great efforts to secure a place for their music in these media and employ expert intermediaries to ‘place’ music in films and TV. Some collections are organised into B2B digital libraries specifically for this purpose, which is known as music synchronisation. Naturally, the collections are organised by traditional metadata such as Artist, Title, Album and Genre. However as users don’t always know exactly what they are looking for, but know what it should sound like, additional facets such as Mood, Tempo and Subject are also employed. In this presentation Charlie Inskip will discuss how creative search is facilitated by these search engines and whether they may be improved
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