1,720,997 research outputs found
Figure 14 in A non-archaeopterygid avialan theropod from the Late Jurassic of southern Germany
No full textFigure 14. Shoulder region and proximal ends of both humeri of Sapeornis (JZT-DB 0047), showing the enlarged and medially inclined facet for the insertion of m. pectoralis (arrows). DOI: https://doi.org/10.7554/eLife.43789.018Published as part of Rauhut, Oliver Wm, Tischlinger, Helmut & Foth, Christian, 2019, A non-archaeopterygid avialan theropod from the Late Jurassic of southern Germany, pp. 1-38 in eLife 8 (43789) on page 24, DOI: 10.7554/eLife.43789.001, http://zenodo.org/record/323595
Figure 1 in A non-archaeopterygid avialan theropod from the Late Jurassic of southern Germany
No full textFigure 1. Geographic and stratigraphic provenance of the new avialan specimen. (A) Map of the southern Franconian Alb with the palaeogeographic settings indicated and showing the localities of theropod specimens from the Solnhofen Archipelago (modified from Foth and Rauhut, 2017). (B) Stratigraphic position of the new specimen, SNSB-BSPG 2017 I 133, within the 'Solnhofen limestones' and in comparison to known specimens of Archaeopteryx (modified from Rauhut et al., 2012). Figure 1 continued on next pagePublished as part of Rauhut, Oliver Wm, Tischlinger, Helmut & Foth, Christian, 2019, A non-archaeopterygid avialan theropod from the Late Jurassic of southern Germany, pp. 1-38 in eLife 8 (43789) on page 3, DOI: 10.7554/eLife.43789.001, http://zenodo.org/record/323595
Figure 10 in A non-archaeopterygid avialan theropod from the Late Jurassic of southern Germany
No full textFigure 10. Manual phalanges of Alcmonavis poeschli. (A) and (B) Distal ends of metacarpals II and III and proximal phalanges of digits II and III in normal (A) and ultraviolet (B) light. (C) First phalanx of first digit in medial view. (D) Ungual phalanx of digit I in medial view under ultraviolet light. (E) Ungual phalanx of digit II in medial view under ultraviolet light. (F) Ungual phalanx of digit III in lateral view under ultraviolet light. Abbreviations as in Figure 2, and: ft, flexor tubercle; gr, groove; ks, keratinous sheath; lpf, lateropalmar flange; pl, proximal lip. Scale bars are 1 cm. DOI: https://doi.org/10.7554/eLife.43789.012Published as part of Rauhut, Oliver Wm, Tischlinger, Helmut & Foth, Christian, 2019, A non-archaeopterygid avialan theropod from the Late Jurassic of southern Germany, pp. 1-38 in eLife 8 (43789) on page 16, DOI: 10.7554/eLife.43789.001, http://zenodo.org/record/323595
Figure 7 in A non-archaeopterygid avialan theropod from the Late Jurassic of southern Germany
Full text linkFigure 7. Radius of Alcmonavis poeschli. (A) Proximal end as exposed in medial view. (B) Proximal end in oblique posteromedial view. (C) mid-shaft in medial view. Abbreviations: fu, longitudinal furrow; tbr, tuberculum bicipitale radii. Scale bars are 5 mm. DOI: https://doi.org/10.7554/eLife.43789.009Published as part of Rauhut, Oliver Wm, Tischlinger, Helmut & Foth, Christian, 2019, A non-archaeopterygid avialan theropod from the Late Jurassic of southern Germany, pp. 1-38 in eLife 8 (43789) on page 11, DOI: 10.7554/eLife.43789.001, http://zenodo.org/record/323595
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
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