1,720,959 research outputs found
Osservazioni sulla fauna a vertebrati pleistocenici della Grotta Cola (Abruzzo, Aquila).
No full textThe Late Pleistocene and Holocene Mammals in Italy: new biochronological and paleoenvironmental data.
No full textMiddle Pleistocene vertebrate fauna from Cretone (Sabina, Latium).
No full textA fossil vertebrates assemblage has been discovered near the Cretone spa (Sabina, Latium). The fauna can be referred to the late Middle Pleistocene (Torre in Pietra F.U., Aurelian Mammal Age). Several taxa of small and large mammals and the avifauna testify temperate-cold climatic conditions and a woody environment with several open spaces
Mammuthus meridionalis (Nesti, 1825) from Campo di Pile (L'Aquila, Abruzzo, Central Italy)
No full textIn the summer of 2009, four molars and two tusks, of a single individual of Mammuthus meridionalis, (a female, 28-30 year old) were discovered at Campo di Pile (L'Aquila, Abruzzo, Central Italy) in fluvial beach sediments of a depositional unit dated to the late Early Pleistocene. A new fragmentary tusk of a second individual has been recently discovered not far from the former. The morphology and dimensions of the penultimate molariform teeth fall within the range of variation of the Upper Valdarno specimens. The enamel pattern is consistent with that commonly found in M. meridionalis. Moreover, the relative thickness of the layers indicates a less advanced Mammuthus representative. In the L'Aquila Basin, at Madonna della Strada-Scoppito, a complete skeleton of M. meridionalis was found in sediments dating to the pre-Jaramillo Early Pleistocene, while some other isolated remains have been recorded at Rocca Santo Stefano and Colle Mancino. During the early Middle Pleistocene, Mammuthus (? Mammuthus trogontherii) and Palaeoloxodon co-occurred in the faunal assemblage of Pagliare di Sassa. Based on stratigraphic evidence, the Campo di Pile findings seem to be intermediate in age between the Madonna della Strada and the Pagliare di Sassa specimens. Ongoing research on the Campo di Pile site contributes to enhancement of knowledge of the Quaternary fauna and paleoenvironmental evolution of the L'Aquila Basin. (C) 2012 Elsevier Ltd and INQUA. All rights reserved
Endemism in Plio-Pleistocene Vertebrate faunas of Italian Peninsula and their Palaeobiogeographical meaning.
No full text
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
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