1,720,983 research outputs found
Casanova di Rovegno Versante NW Roccabruna, Campagne di ecologia storica e archeologia rurale (2010)
No full textApproccio dendrocronologico alla storia dell'Abete bianco (Abies alba) nell'Appennino Ligure
No full textAnalisi dendrocronologiche di tronchi conservatisi in una torbiera montana dell'Appennino Ligur
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
Rapporti fra processi geoidrologici e uso del suolo: il caso studio dell’evento alluvionale del 25 ottobre 2011 nel bacino di Vernazza (Cinque Terre, Liguria orientale)
No full textVariations 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
Aged titania nanoparticles. The simultaneous control of surface and massive properties
No full textTiO2 nanoparticles are obtained by combining a sol-gel preparative route with hydrothermal aging steps,
performed in mild conditions, of varying time lengths. Both aged and un-aged samples are thermally treated
at 300 and 600 °C, for the same length of time. The crystal structures, the phase composition, and crystallite
sizes are analyzed by powder X-ray diffraction. Raman spectra of anatase nanocrystals with average sizes of
7-10 nm are reported and the correlation between the Raman band shape of the main feature at 144 cm-1
and the crystallite size is discussed. Nitrogen physisorption by Brunauer-Emmett-Teller (BET) method is
adopted to evaluate the particles surface area and mesopore size and size distribution. The role played by the
hydrothermal step in affecting the physicochemical properties of the powders is discussed also with respect
to the H2O/TiO2 interactions as apparent from Raman spectroscopy investigations of the O-H stretching
range (3000-3800 cm-1)
Campagne di ecologia storica e archeologia rurale nell'Appennino Ligure Orientale (2009-2011)
No full textAppropriate 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
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