1,720,956 research outputs found
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
Proprietà psicometriche della versione italiana dell’Oral Health Impact Profile forma ridotta (OHIP-14).
No full textRIASSUNTO. Scopo del presente lavoro è di analizzare
dal punto di vista psicometrico la versione italiana della scala di valutazione della qualità di vita legata alla salute orale Oral Health Impact Profile forma ridotta (OHIP-14),
utilizzando sia metodi statistici classici che l’analisi di Rasch.
Sono stati valutati 85 soggetti, residenti in una casa di riposo, tramite l’OHIP-14, il Geriatric Oral Health Assessment Instrument (GOHAI) ed un giudizio clinico globale. Due delle cinque categorie di risposta dell’OHIP-14 (1= quasi mai; 3= abbastanza spesso) non sono risultate conformi ai criteri di funzionamento definiti dall’analisi di Rasch. Il modello che ha permesso di soddisfare i suddetti criteri è stato quello che ha raggruppato le categorie in tre soli livelli (0= mai; 1=talvolta; 2=frequentemente). L’item 12 (‘difficoltà a fare i lavori usuali’) ha mostrato una limitata coerenza con il modello Rasch (lieve ‘underfit’). L’analisi delle componenti principali dei residui ha mostrato un’alta correlazione (r = 0.66) tra le risposte degli item 9 (‘difficoltà a rilassarsi’) e 11 (‘irritabile con altre persone’): questo indica una possibile violazione dell’indipendenza locale tra item.
In conclusione, l’analisi di Rasch ha permesso di dimostrare
sia la sostanziale unidimensionalità della scala OHIP-14, sia
la possibilità di semplificare il numero di categorie della scala stessa. Ulteriori studi sono necessari per confermare la stabilità di questi risultati in differenti situazioni sperimentali
Work-related musculoskeletal diseases in dental professionals. 1. Prevalence and risk factors.
No full textI disturbi muscolo-scheletrici di natura lavorativa (DMSL) hanno avuto negli ultimi due decenni un netto incremento di incidenza. Anche tra gli operatori sanitari dentali (OSD) - dentisti, igienisti dentali e assistenti alla poltrona - il rischio di sviluppare un DSML è elevato: è stato recentemente stimato che una percentuale compresa tra il 54% e il 93% di essi ne sia interessata almeno una volta nel corso della carriera (13-18). In particolare modo, ad esserne più soggetti sono i professionisti più anziani e le donne (4, 19-23), mentre le regioni corporee maggiormente interessate risultano essere il rachide e gli arti superiori. La prevenzione dell’insorgenza di questi disturbi riveste un ruolo cruciale e richiede l’identificazione e la correzione dei fattori di rischio che negli OSD possono essere suddivisi in elementi connessi al lavoratore, al tipo di mansione, al posto di lavoro e agli arnesi di lavoro
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
Ergonomic analysis of the handle of manual instruments for dental hygiene.
No full textWork-related musculoskeletal disorders of upper limbs are very common among dental hygienists. To minimize the risk of their occurrence, it is essential that attention be paid to proper ergonomics in the workplace, including the selection of instrumentation. At present there are no specific guidelines but only some indications for the selection of the different hand tools.
The main purpose of this study was to make a comparative analysis of different types of handles of hand tools used for root planing (Gracey curettes). Nine dental hygienists were interviewed with a questionnaire aimed to assess three different types of curette handle. The results showed that lightness, being
of solid steel, having a cylindrical non-uniform shape with full enlarged cross-section, and being silicon coated with non-slip ends are the preferred characteristics for a curette handle. These considerations may assist both manufacturers in designing new hand instruments and clinicians in selecting the most ergonomic ones to buy
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