1,721,026 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Habitat and habitat management requirements of the shrill carder bee (bombus sylvarum) and the brown-banded carder bee (bombus humilis) in South Essex
Full text linkA study of the habitat and habitat management requirements of two UK Biodiversity Action Plan Priority bumblebee species, Bombus sylvarum and Bombus humilis. Maps were produced of the South Essex distributions of the bees and a combination of field surveys, pollen sampling, habitat manipulation and microsatellite DNA analysis were used to investigate the forage requirements, nestingp referencesa nd spatiald ynamicso f the bees. Bombus humilis and B. sylvarum queens were recorded as the latest emerging of the Bombus species observed, not appearing until late May. Fabaceae, Scrophulariaceae and Lamiaceae were recorded as being the floral families most frequently and consistently visited by the bees with pollen being most commonly collected from Fabaceae and Scrophulariaceae. Rarefaction analysis of dietary preference data revealed that the mean number of plant species B. sylvarum workers would be expected to visit during 20 flower visits was significantly fewer than for B. humilis and B. pascuorum (p=0.009 and p=0.004 respectively). The mean number of plant species B. humilis would be expected to visit during 20 flower visits was similar to that of the nationally ubiquitous species B. pascuorum and B. lapidarius but was consistently lower than another ubiquitous species B. terrestris/lucorum, although not significantly so (p=0.182). Forage patches sown with favoured forage species of the bees (Lotus glaber, Odontites verna, Ballota nigra, Lotus corniculatus and Trifolium pratense) successfully attracted B. humilis and B. sylvarum workers. No technique was found for reliably locating nests, and only three nests were located in the study. Those that were found were situated in relatively undisturbed tall rough grassland with a sunny exposure. For the first time, microsatellite DNA analysis was used to assess foraging distances of rare bumblebees. Mean foraging distances estimated from distances separating sister bees were calculated as 756m for B. humilis and 232m for B. sylvarum. These distances were considered to be appropriate spatial scales for nesting and foraging habitat management. Results from this study were fed into a 10-year habitat management program for the bees at Hadleigh Castle Country Park, South Benfleet, Essex
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
Barking Riverside ISIS Invertebrate Assemblage Analysis
Full text linkIn the UK, the Thames Gateway, Greater London, has been designated a national priority forurban regeneration and sustainable development. The area is, however, also recognisedunder Natural England's Natural Area designations for its distinctive and unique natureconservation value in terms of wildlife and natural features. In addition to statutorydesignation, the value of brownfield (post-industrial) sites in the area is being increasinglyrecognised
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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