1,721,012 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
An example of two stages exhumation of a thrust and fold belt from the thermochronology of Western Carpathians
No full textLow-T thermochronometric evidence for post-thrusting (< 11 Ma) exhumation in the Western Outer Carpathians, Poland
Get PDFThermal indicators record exhumation of sedimentary units from depths in excess of 6 km over most of the Outer Carpathian fold and thrust belt in Poland. Apatite fission track data, showing cooling ages ranging between 32.1±4.8 and 7.0±0.8 Ma, indicate that exhumation was partially coeval with shortening. However, new hermochronometric information obtained as part of this study allowed us to unravel a previously undetected, postthrusting exhumation stage. The integration of new field data and structural analysis with low-T thermochronometry suggests that termination of thrusting at ca. 11 Ma in the area of the present study was followed by gravity disequilibria within the orogenic wedge. The
related extension and denudation phenomena appear to have played a primary role in the recent (< 10 Ma) tectonic evolution of the Western Outer Carpathians, exerting a major control on exhumation processes in this key area of the Alpine–Carpathian mountain system
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
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
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
Paleomagnetic results from lower Triassic red sandstones from the autochthonous cover of the Central Western Carpathians: constraints on largescale rotations of the Alcapa microplate.
Get PDFThe Carpathian orogen formed as a result of collision of the Alcapa and Tisza-Dacia microplates with the
European Platform. With the objective of better constraining the regional paloegeographic evolution,
we carried out paleomagnetic studies within the Central Western Carpathians, which constitutes a
fragment of the Alcapa microplate. This study is a continuation of our earlier works performed in the
Tatra Mts where we studied lower Triassic red sandstones from the autochthonous cover of the
crystalline basement. This time we investigated rocks of matching age, lithology and tectonic position,
from the area of two nearby mountain massifs: Low Tatra and Velka Fatra.
Petromagnetic analyses provided similar results for all the studied sites. Red sandstones are rich in
hematite and contain only small amounts of low coercivity ferromagnetic minerals. Hematite carrier
records one characteristic component characterized by maximum unblocking temperatures of 680°C.
This component displays dominantly normal polarity with shallow to moderate inclinations and north
directed declinations (after the tectonic correction).
The results obtained in this study are incompatible with previous paleomagnetic studies pointing to
large-scale counterclockwise rotations of the Alcapa. On the other hand, our new findings are in good
agreement with our previous results from the Tatra Mts. Observed inclinations are similar to that
expected from reference paleomagnetic data from the European Platform, whereas declination values
indicate only moderate counterclockwise rotations of about 20°.
Acknowledgements: this work was supported by Polish National Science Centre (NCN) (Grant nr.
2014/13/B/ST10/01151)
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