1,720,954 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
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
Paleoclimate and palynological proxies during the Holocene sea level rising and human settlements (South Sardinia, West Mediterranean Sea)
Get PDFSeveral sites, from the Cagliari and Oristano Gulfs and some spots distributed in central and southern Sardinia, spanning the last 10000 years, have been the subject of this updated synthesis. The time scale is in calibrated years BP. When age-models were not provided, the age is based on the pottery fragments and by comparison with other known settlements. Sedimentological and palaeontological analyses have been carried out in the filling cores of paleo-valleys that occurred during the Holocene sea level rise. This data have also been isotopically recalibrated (C14) considering different freshwater ingressions in different periods. The δ18O and δ13C records of a 30 m Holocene succession have returned resolution at a multi-decadal scale and have been compared in the geo-chronologic frame to the benthic foraminifer ecological associations and the rising sea level curve. The long-term isotopic variability indicate an increasing salinity of the waters between ca. 10000 to 7500 years BP followed by high precipitation with high organic influx of terrestrial origin (7500 to 3850 years BP) and by an increase of water salinity up to 200 years BP. The oldest vegetation (9654 cal. year BP) was mainly represented by a Pinus sylvestris/pinaster, Betulaceae and Ericales woodland. The climate amelioration up to about 7700 cal. years BP leads to the spread of Ericaceae and the mixed termophilous forest. Up to about 7400 cal. years BP the record displays a pollen abundance of drier, likely cold, open vegetation with chenopods and herbs; trees vegetation was restricted to the Pinus forest in the south and Alnus, Corylus, Juglans Juniperus and Quercus woodland in central Sardinia. Up to about 4800 cal. years BP a persistent peak in deciduous mixed Quercus forest spread. Then, Pistacia and Ericaceae schrublands, beyond phases with chenopods, herbs and graminae pollen abundance characterized the Eneolithic and Bronze ages during which the shrinking of the mixed forest, the expansion of cereal culture is attested in the archaeological contexts. A last chenopods and herbs open vegetation phase onsets at presumably the Little Ice Age in south Sardinia
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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