1,721,119 research outputs found
No Deal: Investigating the Influence of Restricted Access to Elsevier Journals on German Researchers' Publishing and Citing Behaviours
No full textIn 2014, a union of German research organisations established Projekt DEAL, a
national-level project to negotiate licensing agreements with large scientific
publishers. Negotiations between DEAL and Elsevier began in 2016, and broke
down without a successful agreement in 2018; in this time, around 200 German
research institutions cancelled their license agreements with Elsevier, leading
Elsevier to restrict journal access at those institutions from July 2018
onwards. We investigated the effect of these access restrictions on
researchers' publishing and citing behaviours from a bibliometric perspective,
using a dataset of ~410,000 articles published by researchers at the affected
DEAL institutions between 2012-2020. We further investigated these effects with
respect to the timing of contract cancellations with Elsevier, research
disciplines, collaboration patterns, and article open-access status. We find
evidence for a decrease in Elsevier's market share of articles from DEAL
institutions, from a peak of 25.3% in 2015 to 20.6% in 2020, with the largest
year-on-year market share decreases occurring in 2019 (-1.1%) and 2020 (-1.6%)
following the implementation of access restrictions. We also observe
year-on-year decreases in the proportion of citations made from articles
published by authors at DEAL institutions to articles in Elsevier journals
post-2018, although the decrease is smaller (-0.4% in 2019 and -0.6% in 2020)
than changes in publishing volume. We conclude that Elsevier access
restrictions have led to some reduced willingness of researchers at DEAL
institutions to publish their research in Elsevier journals, but that
researchers are not strongly affected in their ability to cite Elsevier
articles, with the implication that researchers use a variety of other methods
(e.g. interlibrary loans, sharing between colleagues, or "shadow libraries") to
access scientific literature
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
Fig. 11. Bibionomorpha from the Solite quarries. a in How Time Flies for Flies: Diverse Diptera from the Triassic of Virginia and Early Radiation of the Order
No full textFig. 11. Bibionomorpha from the Solite quarries. a. Virginiptera certa Blagoderov and Grimaldi, female, VMNH 731. b. Virginiptera similis Blagoderov and Grimaldi, VMNH 825. c. Virginiptera certa, male, VMNH 2998. d. Virginiptera lativentra Blagoderov and Grimaldi, holotype male, VMNH 2923. e. Brachyrhyphus distortus Blagoderov and Grimaldi (Protorhyphidae), VMNH 2927. Not to the same scale (scales 5 0.5 mm).Published as part of BLAGODEROV, VLADIMIR, GRIMALDI, DAVID A. & FRASER, NICHOLAS C., 2007, How Time Flies for Flies: Diverse Diptera from the Triassic of Virginia and Early Radiation of the Order, pp. 1-40 in American Museum Novitates 3572 on page 23, DOI: 10.1206/0003-0082(2007)509[1:HTFFFD]2.0.CO;2, http://zenodo.org/record/538798
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
FIGURE 1 in Leehermania prorova, the earliest staphyliniform beetle, from the Late Triassic of Virginia (Coleoptera: Staphylinidae)
No full textFIGURE 1. Dorsal habitus (without legs) of exemplar Staphylinidae, with labels for structures referred to in the text. A. Phloeocharinae. B. Pseudopsinae. C. Trichophyinae. D. Tachyporinae. E. Trigonurinae. All to the same scale. Original. Abbreviations: lat sclrt. tIX, lateral tergal sclerites of abdominal segment IX.Published as part of Chatzimanolis, Stylianos, Grimaldi, David A., Engel, Michael S. & Fraser, Nicholas C., 2012, Leehermania prorova, the earliest staphyliniform beetle, from the Late Triassic of Virginia (Coleoptera: Staphylinidae), pp. 1-28 in American Museum Novitates 2012 (3761) on page 5, DOI: 10.1206/3761.2, http://zenodo.org/record/459797
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
No deal: German researchers’ publishing and citing behaviors after Big Deal negotiations with Elsevier
Full text linkIn 2014, a union of German research organisations established Projekt DEAL, a national-level project to negotiate licensing agreements with large scientific publishers. Negotiations between DEAL and Elsevier began in 2016, and broke down without a successful agreement in 2018; in this time, around 200 German research institutions cancelled their license agreements with Elsevier, leading Elsevier to restrict journal access at those institutions. We investigated the effect on researchers' publishing and citing behaviours from a bibliometric perspective, using a dataset of ∼400,000 articles published by researchers at DEAL institutions between 2012-2020. We further investigated these effects with respect to the timing of contract cancellations, research disciplines, collaboration patterns, and article open-access status. We find evidence for a decrease in Elsevier’s market share of articles from DEAL institutions, with the largest year-on-year market share decreases occuring from 2018 to 2020 following the implementation of access restrictions. We also observe year-on-year decreases in the proportion of citations, although the decrease is smaller. We conclude that negotiations with Elsevier and access restrictions have led to some reduced willingness to publish in Elsevier journals, but that researchers are not strongly affected in their ability to cite Elsevier articles, implying that researchers use other methods to access scientific literature.Im Jahr 2014 gründete ein Zusammenschluss deutscher Forschungsorganisationen das Projekt DEAL, ein Projekt auf nationaler Ebene zur Aushandlung von Lizenzverträgen mit großen Wissenschaftsverlagen. Die Verhandlungen zwischen DEAL und Elsevier begannen 2016 und scheiterten 2018 ohne eine erfolgreiche Einigung; in dieser Zeit kündigten rund 200 deutsche Forschungseinrichtungen ihre Lizenzverträge mit Elsevier, was Elsevier dazu veranlasste, den Zeitschriftenzugang für diese Einrichtungen zu beschränken. Die Autor*innen untersuchten die Auswirkungen auf das Publikations- und Zitierverhalten von Forschenden aus bibliometrischer Sicht anhand eines Datensatzes von ∼400.000 Artikeln, die von Forschenden an DEAL-Einrichtungen zwischen 2012-2020 veröffentlicht wurden
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