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Apparato gastrointestinale del tasso (Meles meles meles): rilievi macro-anatomici e strutturali
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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
Internal organs morphometry of the wild boar population (Sus scrofa) in Trevigian Prealps
No full textDispelling 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
Distance Sampling and Thermal Immaging to assess a roe deer population in Northern Appennines: the pros and cons of a fashionable technique.
No full textThe recent development of Oistance Sampling techniques (OS) has provided a promising device to
yield good population estimates with samples of small size (40-80 independent detections) with reasonable
survey costs. On this subject, during the past Roe deer Meeting (Portugal) were presented
interesting results suggesting that OS coupled with thermal imaging (IR) could be a suitable and costeffective
monitoring methodology.
We present the results of a 3-year project devoted to compare density estimates from OS & IR with
more conventional Mark Recapture (MR) estimates of an Appennines roe deer population. We worked
in an open hunting estate, where a long-term study on roe deer ecology includes radio-monitoring
and densities assessment since 1995. We tested the possibility to survey roe deer using a portable
thermo-camera, equipped with a laser rangefinder and an electronic compass, which allows the operator
to record ani mais presence (group size and number of groups) also in completely dark night
and to measure their distance and angle with respect to the observer. We walked 35 transects (total
effort 20.5 km) in 3 nights, from 7:00 PM to 5:00 AM, to survey an area of 523 ha. We made 2 survey
replicates each year (late winter/early spring) to compare the results with estimates of early spring
survey calculated by MR methods.
Night survey is thought to mitigate the problem of g(O) < 1 (which affect daylight ones when animals
f1y away reacting to the presence of an observer) because the use of an IR camera is supposed to
allow the detection of deer before being discovered. However, IR & OS survey design could be
biased because observers are forced to use paths and so transect positioning may not be random
with respect to ani mais distribution. We present an a posteriori evaluation of the survey design and
we compare the 2 survey methods in order to assess the presence of biases in IR & OS
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