1,721,129 research outputs found
Kinematic evolution of thrust-related structures in the Umbro-Romagnan Parautochton
No full textIn the internal part of the Umbro-Marchean-Romagnan Apennines, the foredeep clastic wedge constituting the Neogene part of the sedimentary cover is completely detached from the underlying Mesozoic-Palaeogene succession. The resulting (Umbro-Romagnan) parautochthon consists of tectonostratigraphic units with a general geometry of broad synclinal blocks separated by narrow faulted anticlines. The kinematic evolution is described. It occurred partly during syn-depositional compression, and also accounts for the observed lithofacies distribution. The latter reflects an early differentiation of the foredeep trough into sub-basins that are progressively younger towards the foreland. The detachment anticlines that originally bounded such sub-basins were the site of later thrust propagation, leading to a tectonic juxtaposition of different tectonostratigraphic units consisting of broad NW-SE elongate synclinal blocks
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
3D Model of the active extensional fault system of the high Agri River valley, Southern Apennines, Italy
No full textThe high Agri River valley (southern Apennines, Italy) hosts an active fault system, and a severe earthquake struck the area in 1857 (equivalent magnitude Me = 6.98; Imax = XI). In this study, we integrated surface geology with available subsurface data in order to propose a new 3D structural model for the high Agri River valley fault system. The model presented here is based on a series of published deep geological sections across the study area, using the software 2D Move and 3D Move (Midland Valley Exploration Ltd.). It displays the active extensional fault system dissecting the pre-existing southern Apennines fold and thrust belt. This region is characterised by the tectonic superposition of carbonate platform and pelagic basin allochthonous units onto a several km-thick carbonate platform succession representing the underthrusting foreland sequence. The detachment between the allochthon and the buried carbonate platform succession is marked by a several hundreds of metres thick mélange zone which consists mainly of intensely deformed and overpressured deepwater mudstones and siltstones. The 3D model shows that, at surface, the valley is asymmetric, with the most relevant normal faults, as well the maximum thickness of Quaternary alluvial deposits, located along its northeastern side. Locally, minor antithetic faults generate secondary grabens. All these faults occur only in the shallow brittle layer. At depth, a normal fault cuts the top of the deeper unit just below the central part of the Quaternary plain, and does not continue in the tectonic units above. This SW-dipping feature, extending for about 20 km into a WNW-ESE direction, appears to be the most probable deep structure responsible for the development of the active fault system. Therefore, it is also likely to be the source of strong earthquakes such as the 1857 event. The 3D model outlines the mechanically fundamental role played by the ductile mélange zone, which controls the modes of fault propagation from the deep brittle layer to the shallow (allochthonous) one
Evoluzione tettono-stratigrafica dell'avanfossa appenninica Marchigiano-Romagnola dal Miocene superiore al Pleistocene
No full textJurassic to Early Cretaceous pelagic carbonates from the Campania-Latium margin of the Tyrrhenian Sea
No full textRe:Paula M.J.Moonen et al.: Human papilloma virus DNA and p53 mutations analysis on bladder washes in relation to clinical outcome of bladder cancer
No full textI terrazzi costieri delle Marche settentrionali: indicatori di sollevamento tettonico differenziale?
No full text- …
