1,721,071 research outputs found
Ghiara Giorgia, Rossino Elisa, Bonizzoni Letizia, Chiari Massimo, Gargano Marco, Gatta Giacomo Diego, Massardo Sara, Mazzinghi Anna, Trasatti Stefano Pierpaolo Marcello
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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
Integration of ecological indicators to assess a multitemporal impact of cement industries
Full text linkThe present study evaluated an integrated biomonitoring approach based on three different bioindicators: tree rings, lichens,
and beetles in a complex environment (urban-industrial-forest). In Central Italy, four sampling sites were selected to assess
the anthropogenic impact of cement plants taking into account (1) long-term exposure (1988–2020) through the analysis
of trace elements in tree rings of Quercus pubescens; (2) medium-term exposure (2020–2021) through the analysis of trace
elements in thalli (outermost portions) of the lichen Xanthoria parietina; (3) short-term exposure in spring 2021 through
the bioaccumulation and evaluation of sample vitality in transplants of the lichen Evernia prunastri and a periodic survey
of entomological biodiversity carried out during spring and summer 2021. Trace elements of industrial origin were found in
tree rings, with different levels of accumulation between 1988 and 2020 and a maximum in 2012. Native thalli of the lichen
X. parietina showed an overall low bioaccumulation of trace elements except for Cr, probably reflecting the influence of
national lockdown measures. The transplants of E. prunastri showed a weak stress response in the industrial and urban sites,
but not in the forest, and identified Tl and V as the main elements contributing to atmospheric contamination, with peaks at
the industrial sites. Concerning the beetles, a significantly lower number of species was found at the Semonte industrial site
Real‐Time Radiation Beam Monitoring by Flexible Perovskite Thin Film Arrays
Full text linkReal-time and in-line transversal monitoring of ionizing radiation beams is a
crucial task for several applications which span from medical treatments to
particle accelerators in high energy physics. Here a flexible and large area
device based on 2D hybrid perovskite thin films (phenylethylammonium lead
bromide), fabricated onto a thin flexible polyimide substrate, able to map the
transversal beam profile of high energy radiation beams is reported. The
performance of this novel tool is here compared with the one offered by
standard commercial large-area technology, namely radiochromic sheets. The
great potential of this class of devices is demonstrated by successfully
mapping in real-time a 5 MeV proton beam at fluxes between 10 8 and 10 10
H+ s−1 cm−2 , confirming the capability to operate in a radiation-harsh
environment without output signal saturation issues. The versatility and
scalability of here proposed detecting system are demonstrated by the
development of a multipixel array able to map in real-time a 40 kVp X-ray
beam spot (dose rate 8 mGy s−1 ). Perovskite thin film-based detectors are
thus assessed as a very promising class of thin, flexible devices for real-time,
in-line, large-area, conformable, reusable, transparent, and low-cost
transversal beam monitoring of different ionizing radiation
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
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