1,720,956 research outputs found
Alpine and pre-Alpine tectonics in the Central Orobic Alps (Southern Alps)
Get PDFA sequence of regional deformation episodes is described in the Permian cover and in the metamorphic basement of a portion of the Southern Alps, southeast of Sondrio (Valtellina). The earliest episode is contemporaneous with low to medium grade metamorphism in the basement; the second episode occurs during low temperature greenschist-facies retrogradation in the basement; these two synmetamorphic regional deformation episodes in the basement are pre-Alpine (probably of Variscan age) and predate the deposition of Permian sediments. Cover and basement are deformed together during a third tectonic episode of post-Triassic age, unrelated to regional metamorphic reactivation, and associated with nappe emplacement and regional folding, that took place at shallow levels of the Southalpine margin during Alpine time
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
Evolution and characterization of the quarry waste in relation to slope stability: preliminary evaluation in the Carrara marble basin (Italy)
No full textThe Carrara marble quarries (Apuan Alps, north-western Tuscany) are among the most famous in the world and nowadays are also a tourist resource. In time, the intense quarrying formed wide and thick dumps of waste block and pebble material (locally named ravaneti), representing a typical landscape of the Apuan area. Nowadays, a great amount of quarry dumps lies on steep slopes and invades many valley bottoms, where usually there is only underground water flow, without any superficial flow. During rainstorms, the water level may quickly rise to a significant runoff. This often causes floods, landslides and debris flows, as recently occurred on September 23, 2003. In such a context, this research aimed at determining the triggering conditions of the instability phenomena involving quarry waste. In particular, three quarry dumps were selected in the Torano basin (upstream of Carrara). At first, the spatial and morphological evolution of the dumps was studied, trying to understand also the different grain size of the material accumulated in time; then, a detailed geomorphologic analysis was performed, individuating several areas with different characteristics (quarry activity, instability phenomena, debris flow prone areas, land use, etc). Finally, many grain size analyses were carried out in the three quarry dumps. The wide heterogeneity of the grain size needed two methodologies: the coarse fraction (blocks and pebbles) was analysed by means of image analysis, while the finer material (gravel, sand, silt and clay) was analysed in laboratory. The research is clearly in progress, nevertheless represents a first important step to individuate the triggering factors of debris flow phenomena in quarry dumps. In fact, the hazard estimation of the quarry areas is extremely important: for protecting quarrymen and quarrying activity, for the safety of the densely populated areas downstream and for protecting and appreciating the tourist appeal
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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