1,721,834 research outputs found
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
Montecorvino. Una città murata di origine bizantina, un sito abbandonato dei Monti Dauni
No full textDispelling 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
The clinical use of a preparation based on phyto-oestrogens in the treatment of menopausal disorders
No full textIn order to evaluate the efficacy of soya isoflavones (genistein and daidzein) in the treatment of the principal menopausal disorders, a double blind randomized study was performed on a sample of 50 women (with an average age of 53.3 +/- 3.1 years) with Climacteric syndrome referred to the I Clinica Ostetrica e Ginecologica, Policlinico Umberto I, Roma. The research protocol involved the random subdivision of the enrolled sample into two groups of 25 women, group 1 (with an average age of 53.3 +/- 3.5 years, and an average menopausal age of 51.6 +/- 1.8 years) and group 2 (with an average age of 53.1 +/- 2.9 years, and an average menopausal age of 51.3 +/- 1.2 years), who were to receive treatment for three months with the product being studied and with a placebo. After the three-month period, as an additional check, the group initially treated with the placebo would move to the phyto-oestrogens and viceversa. All of the patients were subjected to a series of clinical and instrumental examinations and were asked to fill in a questionnaire concerning their complaints, at the start, at halfway (third month) and at the end (sixth month) of the trial. The results of the evaluation of the questionnaires performed on the 47 patients who had completed the trial showed, in the first three months, an improvement in the symptoms (hot flushes) in 11 patients treated with phyto-oestrogens against 6 patients from the group that received only the placebo. In the second three-month period the hot flushes reappeared in 4 of the 11 patients who had previously seen improvements and had then passed to the placebo. In contrast, the group that passed to the phyto-oestrogens, after treatment with the placebo, experienced the disappearance of hot flushes in 11 women, including the 6 who had already improved in the first three months. There was no significant reduction in anxiety, insomnia or vaginal dryness. None of the enrolled patients indicated complaints linked to the treatment. It can be concluded that the use of a product based on phyto-oestrogens, such as the one experimented, can lead to a significant reduction in some of the disorders linked with the menopause, especially hot flushes
A note on bifurcation of micropolar fluid motions
No full textBifurcation of micropolar fluid motions is studied, making a comparative analysis with simple viscous fluids
L'uso dei tempi del passato come segnale di integrazione linguistica
No full textLo studio si propone di analizzare l’espressione delle relazioni temporali, con particolare riferimento all’area del passato, in racconti fittizi e biografici prodotti da diversi gruppi di apprendenti, nella fattispecie da immigrati slavi (ucraini e polacchi), maghrebini, ghanesi, senegalesi e romeni, tutti di livello postbasico molto avanzato, con apprendimento per alcuni misto (istituzionale e naturale), per altri spontaneo.
L’uso dei tempi del passato è stato correlato ad alcune variabili socio-biografiche ovvero eventuali progetti futuri in Italia, figli nati o scolarizzati in Italia, il livello di istruzione, l’età, le relazioni con italiani, la frequentazione di corsi di italiano.
Tutti i soggetti in questione risiedono nell’area di Napoli e dintorni, un’area particolarmente interessante per l’uso del passato, poiché l’input di esposizione fornisce ai residenti tre forme: il passato prossimo o composto, il passato remoto o semplice e l’imperfetto.
L’area della morfologia verbale è crucialissima nell’acquisizione di una lingua straniera, tuttavia, dal punto di vista acquisizionale, il passato prossimo potrebbe rivelarsi l’unica forma acquisita perché più trasparente (analitico) in termini morfologici rispetto al remoto e dunque più semplice da apprendere.
L’ipotesi che abbiamo fatto è che i soggetti particolarmente integrati saranno in grado di utilizzare tutte le forme loro fornite dall’input dell’area partenopea, ivi incluso il passato remoto.
La nostra analisi dimostrerà che le forme del passato impiegate dagli immigrati non sono diverse da quelle dei nativi (passato prossimo, passato remoto e imperfetto), ma che l’impiego del remoto si correla con alcune variabili socio-biografiche.
L’uso poi di tutte le forme verbali (incluso il remoto) può presentare, in termini testuali, delle divergenze rispetto all’uso che ne fanno i nativi con conseguenze evidenti per la consecutio temporum e l’organizzazione olistica del testo narrativo. Tali divergenze non sembrano essere legate ad alcuna caratterizzazione socio-biografica ma sono l’espressione di un mancato raggiungimento di una competenza nativa, tipico di qualsiasi apprendente adulto di una lingua straniera
- …
