1,721,047 research outputs found
Il Paleolitico superiore nei Colli Albani: stato della ricerca
No full textThe Upper Paleolithic in the Alban Hills: state of research. The evidence for the Upper Paleolithic in the Alban Hills is scarce and provided by surface collections and chance finds. Recent discoveries of complex artifacts wich probably had symbolic value have added novel perspectives and food for thought about Paleolithic occupation of the massif. This paper contextualizes and provides an overview of known and hitherto unpublished prehistoric finds in order to better define the dynamics of how the earliest anatomically modern humans frequented the area
The Late Pleistocene cave hyena from Grotta Guattari (San Felice Circeo, central Italy)
No full textRecent excavations in Grotta Guattari (Circeo Promontory, southern Latium, Italy), in an area that had never been investigated before, the so-called Antro del Laghetto, returned abundant fossil remains of cave hyena. The newly acquired chronology of Grotta Guattari speleothems has allowed us to date the hyena frequentation, and thus the bone accumulations of this part of the cave, around 65 ka (Late Pleistocene, MIS 4). Comparisons with mandibles and upper and lower jugal teeth of extinct and extant hyenas have led to the determination that the species that occupied Grotta Guattari is Crocuta spelaea. The cave hyena from Grotta Guattari had robust jaws and it was relatively large, with some specimens among the largest in Western Europe. Comparisons with the age at death classes of main preys of modern and Late Pleistocene predators suggest that the bone accumulations can be referred to the hunting activity by Crocuta spelaea, which introduced only parts of the carcasses into the cave. Comparisons with dens of modern and Late Pleistocene hyenas suggest this part of Grotta Guattari had a multiple use (storage + communal den), an occurrence already documented in other Late Pleistocene sites. Finally, some cases of cannibalism were described
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
La tafonomia a sostegno dell’archeologia: studio multidisciplinare, analisi sperimentali e nuove tecnologie
No full textThe present doctoral thesis, entitled "Taphonomy in Support of Archaeology: Multidisciplinary Study, Experimental Analysis, and New Technologies," aims to investigate and deepen the complex interactions between the environment, fauna, and humans over time, opening new research perspectives and highlighting the importance of taphonomy as a key tool for archaeology through a detailed study of five significant archaeological and palaeontological sites in Latium (Central Italy): Cava Muracci, Grotta La Sassa, Grotta Mora Cavorso, Grotta Pila, and the Arx of Gabii. This work focuses on the analysis of the taxonomy and taphonomy of about 16,500 faunal remains from the cited sites, exploring deposition dynamics, alteration processes, and relationships between animal species and past human communities. The taxonomy of fossil finds has involved systematic classification of faunal bone remains, while taphonomic analyses have focused on examining post-mortem processes that influenced the preservation and distribution of remains. Taxonomic and taphonomic analyses of Pleistocene deposits from Cava Muracci, Grotta La Sassa, and Grotta Mora Cavorso revealed insights into ancient ecosystems. Notably, predator roles in faunal accumulations emerged, underscoring their significant impact, such as cave hyenas and small carnivores shaping faunal assemblages. Holocene site analyses, including Grotta Pila and the Arx of Gabii, shed light on human subsistence strategies and ritual practices related to animal use. Surface bone observation expanded insights into human practices regarding animal resource management, including butchery signs and seasonal consumption patterns. Particularly at the Arx of Gabii, bone surface analysis provided valuable insights into rituals linked to animal use, enhancing understanding of ancient cultural practices. The adopted methodological approach combines detailed analysis of fossil remains and experimental investigation of modern carnivore feeding traces. The experimental analysis has been conducted on samples of modern carnivore food remains to identify and compare traces on bone surfaces, in order to provide a better understanding of predator-prey dynamics in paleontological and archaeological contexts, and to investigate the diet, behavior, and ecology of the involved organisms, despite limitations in direct comparisons with archaeological findings due to environmental variability. The obtained results contribute to the understanding of ecological change processes and biotic interactions, as well as to the reconstruction of paleoenvironments and food chains in paleontological and archaeological contexts
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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