1,720,976 research outputs found
Processi e tempi di costruzione della catena appenninica nelle sue fasi oligo-mioceniche: l'esempio della finestra di Pracchiola (biostratigrafia, petrografia e analisi strutturale, con Carta geologico-strutturale 1: 20.000)
No full textHigh resolution Late Eocene - Late Oligocene biostratigraphy from Site 1090 (Agulhas Ridge, South Atlantic)
No full textOphiolite-bearing Vermoshi Flysch (Albanian Alps, Northern Albania): elements for its correlation in the frame of Dinaric-Hellenic Belt
Full text linkThe tectonic setting of the Albanian Alps, Northern Albania, is characterized by a thick pile of tectonic units whose uppermost structural level is represented by the Vermoshi Unit, cropping out just few km north of the Shkoder-Péc Line. This unit includes a single formation, the Vermoshi Flysch, characterized by turbidite deposits consisting of arenites, shales and marls. The Vermoshi Flysch has been sampled for paleontological datings and petrographical
analyses of the arenite beds along five selected and well exposed sections in the Vermoshi Valley. The nannoplancton and forams associations detected in the analyzed samples point out to a Barremian age, whereas the petrographical modal analysis of arenites indicates that all the samples have a mixed/hybrid silicilastic-carbonate composition, ranging from quartz-rich sublitharenites to quartz-poor litharenites. However, the main feature ot these arenites is the occurrence of fragments derived from an ophiolite sequence. The petrographical data suggest that these deposits can be regarded as supplied by two different source areas, represented by the margins of the basin where the Vermoshi Flysch was deposited. Whereas one of the border was represented by the Adria continental margin, the opposite one was characterized by an advancing nappe, constituted by ophiolites and their sedimentary cover. In this frame, the Vermoshi Flysch can be regarded as the southernmost part of the Vranduk Flysch, cropping out in Serbia and Croatia. This type of deposits, widespread in the Dinaric-Hellenic belt, can be considered as the sedimentary marker of the Late Jurassic - Early Cretaceous tectonic phases related to the closure of the oceanic area present between the Adria and the Eurasia plate
Late Eocene - late Oligocene nannofossil paleoecology at Site 1090 (Agulhas Ridge, South Atlantic)
No full textProgetto Cartografia Geologica Regione Umbria. Guida al Rilevamento geologico. Caratteristiche Stratigrafiche e strutturali delle unità Umbro-Marchigiana, Rentella, Falda Toscana e delle Unità Liguri e Subliguri.
No full textEvolution of the Oligocene-Miocene foredeep successions in the Toscana-Umbria area: constraints from stratigraphical, biostratigraphical and petrographical data
No full textGoing 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
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