1,721,044 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
Two new species of Limonium (Plumbaginaceae) from Lebanon
Get PDFLimonium postii and L. mouterdei, two new species belonging to the L. palmare aggr., are
described and illustrated from the coast near Beirut, Lebanon. Their relationships with L.
graecum, L. sieberi and L. galilaeum are examine
The neglected name Statice auriculifolia (Plumbaginaceae) and its related names: A long history of nomenclatural intricacy
No full textThe authors studied Statice names derived from the Tournefortianum “Limonium Lusitanicum, Auriculae Ursi folio”. The name S. auriculaeursifolia, basionym of the accepted Limonium auriculaeursifolium, is typified by a specimen in Lamarck's herbarium in Paris. The controversial name S. auriculifolia, often regarded as a synonym of L. auriculaeursifolium, corresponds instead to L. nydeggeri, employed for a narrowly endemic plant of Portugal, and has priority over that name. Statice auriculifolia is lectotypified by a specimen in Tournefort's herbarium. In addition, the related names S. lychnidifolia, S. willdenovii (both illegitimate and synonyms of L. auriculaeursifolium), and S. ovalifolium are discussed. Finally, the taxon to which the invalid name “L. ovalifolium subsp. gallicum” has been applied, has a legitimate name at the specific rank: L. gallicum Domina. This latter name, however, is a taxonomic synonym of L. ovalifolium
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
Limonium divaricatum (Plumbaginaceae), the Arabian Phoenix of sea-lavenders
No full textLimonium divaricatum has been regarded for a long time the name of a taxon occurring in the main islands of western Mediterranean, or as a mere synonym of L. virgatum. In this paper, a critical review of literature and herbarium data allows us to reduce L. divaricatum to a synonym of L. dubium; the lectotypification of this latter name is also amended
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
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