1,721,724 research outputs found
Dataset accompanying Maldonando et al 2015 Global Ecology and Biogeography
No full text<p>Dataset containing species records of the plant tribe Cinchoneae (Rubiaceae). Three classes of records are identified: those downloaded from gbif.org, those that we accepted as correct, those that we rejected as correct, and those that we included from new sources. For details please see the original Open Access publication at http://onlinelibrary.wiley.com/doi/10.1111/geb.12326/abstract: </p>
<p>Maldonado, C., C. Molina, A. Zizka, C. Persson, Taylor, C., J. Alban, E. Chilquillo, N. Rønsted, Antonelli A (2015). Estimating species diversity and distribution in the era of Big Data: To what extent can we trust public databases? Global Ecology and Biogeography. DOI: 10.1111/geb.12326</p>
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
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
(Supplement 3) Dinoflagellate cyst count data by species of the three transects OMZ (GeoB 12312, 12321, 12331), below-OMZ-seep (GeoB 12326), and OMZ-seep (GeoB 12328)
No full text(Supplement 3) Dinoflagellate cyst concentrations of the three transects OMZ (GeoB 12312, 12321, 12331), below-OMZ-seep (GeoB 12326), and OMZ-seep (GeoB 12328
(Supplement 1) Lipid biomarkers in the three investigated transects, OMZ (GeoB 12312, 12321, 12331), below-OMZ-seep (GeoB 12326), and OMZ-seep (GeoB 12328)
No full text(Supplement 1) Lipid biomarkers in the three investigated transects, OMZ (GeoB 12312, 12321, 12331), below-OMZ-seep (GeoB 12326), and OMZ-seep (GeoB 12328
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
One, Two, Three ... An Explosive Outflow in IRAS 123266245 revealed by ALMA
Get PDFIn the last years there has been a substantial increase in the number of the
reported massive and luminous star-forming regions with related explosive
outflows thanks to the superb sensitivity and angular resolution provided by
the new radio, infrared, and optical facilities. Here, we report one more
explosive outflow related with the massive and bright star-forming region IRAS
123266245 using Band 6 sensitive and high angular resolution (0.2)
Atacama Large Millimeter/Submillimeter Array (ALMA) observations. We find over
10 molecular and collimated well-defined streamers, with Hubble-Lemaitre like
expansion motions, and pointing right to the center of a dusty and molecular
shell (reported for the first time here) localized in the northern part of the
UCHII region known as G301.1A. The estimated kinematic age, and energy for the
explosion are 700 yrs, and 10 erg, respectively. Taking into
account the recently reported explosive outflows together with IRAS
123266245, we estimate an event rate of once every 90 yr in our Galaxy,
similar to the formation rate of massive stars.Comment: Accepted to The Astrophysical Journal Letter
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