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Apatodemus degiulii n. gen. et sp. (Rodentia, Muridae), a hitherto undescribed endemite from the Terre Rosse of Gargano (Late Miocene, Southeastern Italy)
No full textThe taxonomy of the murid that had been ascribed to the genus Apodemus from the late Miocene insular faunal assemblages of Gargano
(Southeastern Italy) is revised. Morphological and odontometric analyses of important new dental characters were undertaken. Our
investigations revealed substantial morphological differences from Apodemus. The rodent is therefore assigned to a new genus and
species, Apatodemus degiulii. The new species is characterised by a combination of advanced and primitive characters: moderately
brachyodont teeth, t7 present in all M1–2s, elongated and distally located t1 in M1, t1 often twinned in M1–2, and narrow labial
cingulid in lower molars associated to a well-developed tma. The genus Apatodemus actually includes two distinct species of different
age. A. degiulii is the oldest and is described here in detail. The other one, for the moment, is referred to as Apatodemus sp.: a more
comprehensive description of it will be presented in a future publication. Apatodemus sp. is a highly modified, endemic species, whereas
A. degiulii is slightly endemized. Despite the features of Apatodemus degiulii render difficult to asses its closest continental ancestor,
the species likely originated from some south-eastern European stock, in agreement with paleo-geographical reconstructions suggesting
periodic connections of the Abruzzo-Apulian paleobioprovince with the Balkan mainland. The age when the ancestor of Apatodemus
reached the Apulia Platform is still unclear. However, some lines of evidence suggest a probable arrival at the time of the MN13 unit
(latest Miocene)
Preliminary data on fossil rodents from the vertebrate sites Moncucco and Verduno (post-evaporitic Messinian, Piedmont, NW Italy)
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Inquadramento paleobiogeografico del NW Italia nel Miocene terminale: nuovi dati dai roditori fossili di Verduno (CN) e Moncucco (AT)
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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
Late Messinian rodents from Verduno (Piedmont, NW Italy): biochronological, paleoecological and paleobiogeographic implications
No full textThe stratigraphic and paleoenvironmental context of the Verduno fossil vertebrate locality is discussed
herein based on its rodent record. The Verduno section crops out in the southern part of the Tertiary
Piedmont Basin (TPB), and can be included in the Messinian post-evaporitic Cassano Spinola Fm.,
chronologically corresponding to the so-called Lago-Mare event. Rodents are represented by a relatively
rich assemblage. Murids are by far the most diverse and abundant, with at least four taxa, including the
common Centralomys benericettii and Paraethomys meini, and the rare Apodemus gudrunae and
Occitanomys sp. Cricetids are represented by a single species, Apocricetus cf. A. barrierei. Muscardinus aff.
M. vireti appears to be the only glirid present at Verduno. The Verduno rodent assemblage shares some
taxa with other Messinian post-evaporitic localities from Italy bearing continental vertebrate remains,
such as Brisighella (central Italy) and Moncucco Torinese (NW Italy) (e.g., C. benericettii, P. meini) and,
possibly, with Ciabo` t Cagna (NW Italy). However, the general structure of these four Messinian
assemblages displays substantial differences, which may reflect different palaeoenvironmental
conditions
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
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