1,720,964 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
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
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
Radiopharmacy/Radiochemistry for Conventional Single-Photon Emitting and Therapeutic Radiopharmaceuticals
No full textConventional agents for diagnostic single-photon emission imaging and for radionuclide therapy are mostly associated with radiopharmaceuticals labeled with technetium-99m and iodine radioisotopes. This category of radiopharmaceuticals still determines, to a great extent, the usual operations inside a conventional hospital radiopharmacy. Although this description is not universally accepted and can be certainly subjected to some revision, for the purpose of the present chapter, by “conventional radiopharmacy” is meant a laboratory for the preparation and quality control of radiopharmaceuticals that are produced using either commercial, lyophilized kit formulations or supplied as ready-to-use pharmaceutical preparations. It is implicitly assumed that radiopharmaceutical products belonging to this class of licensed drugs have been always approved by some regulatory authority and intended for a specific clinical application. Obviously, radiopharmaceuticals labeled with radionuclides other than technetium-99m or iodine radioisotopes, but that can be obtained through a kit formulation or as ready-to-use preparations, e.g., indium-111 pentetreotide (Octreoscan®), radium-223 chloride (Xofigo®), yttrium-90 ibritumomab tiuxetan (Zevalin®), or rhenium-188 hydroxyethylidene diphosphonate (188Re-HEDP), can be conveniently included into this category. Conversely, both diagnostic single-photon emitting and therapeutic radiopharmaceuticals that are produced in-house following an extemporaneous, unlicensed procedure (galenic or magistral preparations) will not be considered in this chapter. From the point of view of radiopharmacy requirements, this ensemble of radiolabeling reactions is fully equivalent to those employed for preparing tracers for positron emission tomography (PET) using cyclotron-produced radionuclides. In particular, according to still predominant regulations, extemporaneous therapeutic radiopharmaceuticals should be obtained strictly following the rules of good manufacturing practice (GMP)
Multimodal Classification of Sexist Advertisements
No full textAdvertisements, especially in online social media, are often based on visual and/or textual persuasive messages, frequently showing women as subjects. Some of these advertisements create a biased portrays of women, finally resulting as sexist and in some cases misogynist. In this paper we give a first insight in the field of automatic detection of sexist multimedia contents, by proposing both a unimodal and a multimodal approach. In the unimodal approach we propose binary classifiers based on different visual features to automatically detect sexist visual content. In the multimodal approach both visual and textual features are considered. We created a manually labeled database of sexist and non sexist advertisements, composed of two main datasets: a first one containing 423 advertisements with images that have been considered sexist (or non sexist) with respect to their visual content, and a second dataset comprising 192 advertisements labeled as sexist and non sexist according to visual and/or textual cues. We adopted the first dataset to train a visual classifier. Finally we proved that a multimodal approach that considers the trained visual classifier and a textual one permits good classification performance on the second dataset, reaching 87% of recall and 75% of accuracy, which are significantly higher than the performance obtained by each of the corresponding unimodal approaches
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