1,721,142 research outputs found
Depositional architecture, paleogeographic setting and sequence stratigraphy of the Salento Peninsula from Paleogene to Pleistocene: an integration among field data, well logs and seismic lines
Full text linkThe Salento Peninsula constitutes an outcropping portion of the Apulia Carbonate Platform that was investigated through field analysis and a database of 350 wells and 90 seismic lines that was calibrated with 3 exploration wells in order to construct correlation panels and define paleogeographic schemes of this area during the Paleogene and Neogene. While the Adriatic and Ionic offshore sectors were investigated through 90 seismic lines and 3 exploration wells in order to connect data on land with those at sea to better define the stratigraphic architecture of the area. The Salento Peninsula constitutes the foreland sector of two chain belts migrating in opposite directions (the Dinarides-Albanides-Hellenides chain, moving from NE to SW, and the southern Apennines chain, moving from SW to NE), whose movements influenced the carbonate sedimentation and paleogeographic evolution of this area during the Cenozoic. The analyzed stratigraphic succession is constituted by a shallow-water carbonate sediments that were essentially deposited along reef complexes and variously articulated homoclinal ramps. These environments developed mainly along the eastern margin of the Peninsula and under the influence of the tectonic uplift/subsidence and eustatic sea level changes. This thesis proposes several paleogeographic schemes of the area and discusses how the interference between the two migrating chains, together with the eustatic sea-level changes, influenced the Cenozoic stratigraphic organization of the Salento Peninsula.
Starting from the end of the Cretaceous, the Salento area experienced uplift and erosion, related to the flexural bending of the subducting lithosphere under the Dinarides-Albanides- Ellenides and southern Apennines belts respectively. This process produced an initial extensional fracturing and faulting in the uppermost part of the lithosphere during the Paleocene-early Eocene and an interruption of the shallow-water carbonate deposition; the latter was re-established starting from the middle-late Eocene up to the Pleistocene, with the onset of flexural subsidence, that became more accentuated during the Miocene. This process, together with the eustatic sea-level variations induced by the Cenozoic climatic changes, conditioned the carbonate sedimentation that is characterized by formal and informal lithostratigraphic units bounded by several unconformity surfaces constituting the expression of complete and incomplete simple and composite low- and high-rank depositional sequences.
In this light, this thesis contributes to better define the stratigraphic architecture, the depositional, and paleogeographic setting of the Salento Peninsula for the last 60 Myrs
Gastric apoptosis and Helicobacter pylori infection: An intricate matter
No full textNo abstract available
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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