1,720,968 research outputs found
A sunken continental margin of the Mesozoic Tethys: the northern and central Apennines.
No full textThe Jurassic sequences of the northern and central Apennines were deposited along the margin of the oceanic Tethys. The most important features of this margin during the Jurassic
include: 1) the development of Bahamian-type carbonate platforms (Latium-Abruzzil with adjacent belts of turbiditic carbonate sedimentation; 2) a sequence of pelagic sediments
in the starved distal continental margin whose facies was mainly determined by synsedimentary faulting, prolonged subsidence and increasing water depth (Tuscany, Umbria-Marchel, and 3) the accretion of oceanic crust and deposition of oceanic sediments in the Ligurian zone. The paleotectonic and sedimentary evolution of the Umbrian and Tuscan zones can be best compared to that of starved continental margins of Atlantic-type
Jurassic pelagic deposits from Southeastern Tuscany: aspects of sedimentation and new biostratigraphic data
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Una banca-dati per la ricerca nel settore scienze della terra. Uso ed applicazioni nel campo dell'energia geotermica.
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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
Echoes of Regional Traditions plus Western Typological Influences: Some Notes about the Post-Achaemenid Pottery Assemblage from the Italian Excavations at Qal‛a-ye Sam (Iran, Sistan)
No full textIn the frame of the archaeological researches carried out between the 60’s and the 70’s of the past century in Iranian Sistan by an Italian team of IsMEO (Istituto Italiano per il Medio ed Estremo Oriente) directed by Prof. Umberto Scerrato, some trial trenches were excavated at Qal‛a-ye Sam to obtain data to be compared with the information which the same team was retrieving at the nearby Achaemenian site of Dahana-ye Gholaman.
Since then, the pottery recovered during those excavations was just hinted at in some preliminary reports regarding the main field activities at Dahana-ye Gholaman. The present reappraisal of the pottery assemblage from Qal‛a-ye Sam (in the frame of the WebGIS project “Archaeo.Pro.Di.Mu.S: Archaeological Project Digital Multimedia Sistan”, based at UNO) is centred on the study of over one hundred fragments stored in Italy (previously in Rome at IsMEO/IsIAO and nowadays in Naples at UNO) on the basis of an agreement between IsMEO and the former Imperial Service for the Antiquities of Iran. From the analysis of this unpublished assemblage, interesting details emerge regarding a pottery production which, despite evident Hellenistic morphological influences, still holds strong ties with the ceramic tradition attested in the region during the Achaemenid perio
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
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