1,721,151 research outputs found
Isernia La Pineta
No full textSi descrive l'insediamento paleolitico di Isernia La Pineta rilevando la sua importanza nel contesto nazionale e internazional
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
Thermodynamics of the cell {Li-amalgam|LiX(m)|AgX|Ag} (X = Cl, Br) and medium effects upon LiX in (acetonitrile + water), (1,4-dioxane + water), and (methanol + water) solvent mixtures with related solvation parameters
No full textThe electromotive forces E of the amalgam cells {LixHg1-x|LiCl(m)AgCl|Ag} and {LixHg1-x|LiBr(m)|AgBr|Ag} were measured as a function of the mole fraction x of Li metal in amalgams and of the molalities m of LiCl as well as LiBr at T = 298.15 K. For LiCl, the solvents studied were (acetonitrile + water), (1,4-dioxane + water), and (methanol + water) mixts. contg. up to mass fraction 0.8 of the org. component, but only (acetonitrile + water) mixts. for LiBr. The std. molal electromotive forces Emo were detd. and, for all the solvent systems explored, they appear to vary linearly with the mole fraction y of the org. component involved, according to the following equations: Emo(LiCl)/V = 2.4169-0.2961yA; Emo(LiCl)/V = 2.4175-0.5951yD; Emo(LiCl)/V = 2.4163-0.1749yM; Emo(LiBr)/V = 2.2672-0.2092yA, where A denotes acetonitrile, D is 1,4-dioxane, and M is methanol. The relevant mean molal activity coeffs. as functions of the LiCl and LiBr molalities also were detd. The primary medium effects upon LiCl and LiBr, analyzed in terms of the Feakins-French theory, lead to primary hydration nos. of ≈5 for LiCl and ≈4 for LiBr. These are somewhat lower than those obtained by other methods, but their difference is expected considering the known primary hydration nos. of the anions Cl- and Br-
Progetto pilota per la catalogazione del patrimonio scientifico-naturalistico dei musei universitari nelle università di Modena e Reggio Emilia, Ferrara e Parma
No full textIl progetto si inserisce nell'ambito della piattaforma abilitante complessa per il patrimonio storico-scientifico e naturalistico proposta dalla CRUI-Musei che prevede la sperimentazione dell'utilizzo delle schede di catalogo per il patrimonio scientifico-naturalistico elaborate dall'Istituto Centrale per il Catalogo e la Documentazione del Ministero per i Beni e le Attività Culturali per il Sistema Informativo Generale del Catalogo. Prevede la sperimentazione dei modelli di schede elaborati per il patrimonio scientifico e naturalistico previa attività formativa attraverso la frequenza al master in Catalogazione informatica per la valorizzazione dei beni culturali organizzato dall'Università di Modena e Reggio Emili
Transport parameters of LiCl and LiBr in aqueous mixtures with organic solvents of moderate to low permittivities
No full textThe electromotive forces (emf) EA and EC of the following concn. cells with transference: Ag|AgX|LiX(m2)||LiX(m1)|AgX|Ag and LixHg1-x|LiX(m1)||LiX(m2)|LixHg1-x, resp. (where X = Cl, Br), combined with the emfs EMAX of the corresponding double cell without transference: LixHg1-x|LiX(m1)|AgX|Ag-Ag|AgX|LiX(m2)|LixHg1-x have been measured at LiX molalities m (m1 fixed and m2 varied, with m2 > m1) in 14 solvent mixts. pertaining to the three aq.-org. solvent systems (acetonitrile + water), (1,4-dioxane + water) and (methanol + water) up to the 0.8 mass fraction of org. component. For all of the cases studied the EA vs. EMAX relation is a curve reaching a straight line asymptotically at low LiX molalities. The resulting ionic transference nos. t of LiX show a type of curvilinear dependence on the mass fraction of the org. component which shows analogies with that of the other alkali halides hitherto studied, but is quite distinct from that of HCl. Such a dependence is also analyzed in terms of solvation parameters and the mechanism of ionic motion, with account being taken of Stokes' law ionic radii
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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