1,720,958 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Recent trends among aquatic biota in the catchment of the River Wye (Wales) and the effects of Riparian management
Get PDFRod catches of Atlantic salmon (Salmo salar) from the River Wye were previously the greatest in England and Wales. However, a 30-year decline in catches of salmon and brown trout (S. trutta ) prompted management action. Since 1996, the Wye and Usk Foundation have excluded livestock, managed riparian trees, protected banks, cleared migratory barriers and limed selected tributaries. The aim was to enhance salmon habitat and extend spawning opportunities. The outcomes of such activities in Britain are still poorly understood. This thesis i) identified variations in the water quality, aquatic invertebrates and salmonids of the Wye catchment ii) evaluated the impact of recent management on habitats and aquatic organisms iii) assessed whether any larger-scale factors could explain management effects. Because no suitable project-specific data were collected, routine monitoring data and surveys were applied in the most applicable post-hoc experimental designs. Ecological quality varied widely among the Wye's tributaries. Combined biotic indices supported the need to mitigate acidification in some upland streams and reduce diffuse nutrients in the lower catchment. Riparian management appeared to reduce bank poaching and increase algae by comparison with reference streams. Post-treatment invertebrate communities were richer in recently managed streams than in controls. However, there was no evidence that management reversed the decline in salmonid populations. The typical life-cycle of salmonids in the Wye might delay response to management, but this effect cannot be evaluated with only six years' post-treatment data. Alternatively, local effects could be masked by larger-scale trends. In particular, salmonid abundance in the Wye declines significantly with increasing summer temperatures, decreasing summer rainfall and discharge. I conclude that riparian management has had some of the desired outcomes at the reach or tributary scale. However, salmonid numbers in the Wye potentially reflect climatic effects, implying a need to consider climate-change in future management action.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Recent trends among aquatic biota in the catchment of the River Wye (Wales) and the effects of Riparian management
Get PDFRod catches of Atlantic salmon (Salmo salar) from the River Wye were previously the greatest in England and Wales. However, a 30-year decline in catches of salmon and brown trout (S. trutta ) prompted management action. Since 1996, the Wye and Usk Foundation have excluded livestock, managed riparian trees, protected banks, cleared migratory barriers and limed selected tributaries. The aim was to enhance salmon habitat and extend spawning opportunities. The outcomes of such activities in Britain are still poorly understood. This thesis i) identified variations in the water quality, aquatic invertebrates and salmonids of the Wye catchment ii) evaluated the impact of recent management on habitats and aquatic organisms iii) assessed whether any larger-scale factors could explain management effects. Because no suitable project-specific data were collected, routine monitoring data and surveys were applied in the most applicable post-hoc experimental designs. Ecological quality varied widely among the Wye's tributaries. Combined biotic indices supported the need to mitigate acidification in some upland streams and reduce diffuse nutrients in the lower catchment. Riparian management appeared to reduce bank poaching and increase algae by comparison with reference streams. Post-treatment invertebrate communities were richer in recently managed streams than in controls. However, there was no evidence that management reversed the decline in salmonid populations. The typical life-cycle of salmonids in the Wye might delay response to management, but this effect cannot be evaluated with only six years' post-treatment data. Alternatively, local effects could be masked by larger-scale trends. In particular, salmonid abundance in the Wye declines significantly with increasing summer temperatures, decreasing summer rainfall and discharge. I conclude that riparian management has had some of the desired outcomes at the reach or tributary scale. However, salmonid numbers in the Wye potentially reflect climatic effects, implying a need to consider climate-change in future management action
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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