1,720,956 research outputs found
Les énergies renouvelables: diffusion de la terminologie et traitement dans les ouvrages lexicographiques
No full textPRIMI RISULTATI DELLA CAMPAGNA OCEANOGRAFICA PALEOCLIGE 1999 (BOCCHE DI BONIFACIO – ARCIPELAGO DI LA MADDALENA)
No full textVengono riportati i primi risultati della campagna oceanografica PALEOCLIGE 1999 (Paleoclimatologia e Paleogeografia) basata su acquisizione di profili sismici in alta risoluzione Sub Bottom Profiler-Chirp.
La spedizione e stata effettuata nell'estate 1999 nell'area delle Bocche di Bonifacio e all'interno del Parco Nazionale di La Maddalena utilizzando la motovedetta MVCP452 della Guardia Costiera.
II posizionamento GPS differenziale è stato effettuato dai tecnici dell'Istituto Nazionale di Oceanografia e di Geofisica Sperimentale di Trieste (OGS), contemporaneamente sono stati acquisiti dati sedimentologici mediante benna e immersioni subacquee utilizzando i mezzi della BLON (Base Logistica Operativa Navale del Corpo Forestale e di Vigilanza Ambientale della Regione Sardegna).
La presente nota, anche mediante il supporto di un poster, illustra le caratteristiche sismostratigrafiche dei sedimenti di fondo dell' intera area investigata.
L' interpretazione delle linee sismiche consente di riconoscere sequenze sedimentarie poggianti su un basamento acustico, corrispondente al basamento cristallino sardo, strutturato durante l'orogenesi Ercinica.
Esso risulta sempre ben risolto e caratterizzato da un andamento molto irregolare con presenza di depressioni tra gli alti strutturali che hanno consentito la formazione di bacini di riempimento sedimentario.
Al di sopra del basamento, dal basso verso l'alto, si osservano delle sequenze sedimentarie sia stratificate che caotiche di probabile origine continentale e delle sequenze sedimentarie di origine marina.
Queste sono caratterizzate da spessori variabili da meno di un metro a più di 30 m.
Gli orizzonti sono in alcune zone suborizzontali e subparalleli tra loro, in altre mancano di continuità laterale e formano delle lenti sedimentarie.
E' stata inoltre rilevata la presenza di incisioni in corrispondenza del fondo mare e all'interno delle sequenze sedimentarie, interpretabili come paleoalvei fluviali. Vi sono inoltre corpi sedimentari (mound) caratterizzati da una geometria interna "hummocky".
Le successioni stratigrafiche sono compatibili con gli eventi paleoambientali e paleoclimatici riferibili alla finestra temporale Pleistocene-Olocene.
Queste testimonianze sono inquadrabili nella fase del minimo glaciale Wurm e nella fase di risalita del mare olocenico che ha invaso le coste a rias in oggetto.
I dati esaminati e l'interpretazione in alta risoluzione digitale hanno consentito di definire gli spessori delle coperture sedimentarie (aree chiave del Golfo di Arzachena, Palau, Porto Liscia e area tra l'isola di Spargi e di La Maddalena) e delle principali geometrie dei bacini
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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