1,720,992 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
Reinterventi a distanza in chirurgia addominale. Esperienza personale nell’urgenza. Ann. It. Chir
No full textThe Authors, regarding their emergency surgical experience, examine the need of reintervention in abdominal surgery at a distance (operations carried out not less than 30 days after previous procedure), a controversial situation, usually dealt with empirical approach. Such a feature is not rare in the experience of a surgeon; nevertheless still few are the studies concerning the severity of the disease and related complications requiring surgery. Occasionally it is really difficult--quite impossible- in these often complex clinical conditions, to identify the aetiology and even to perform a pre-operative diagnosis. Sometimes other factors may inhibit an exhaustive evaluation (acute onset of the symptoms, time spent from the former procedure, choice of the patient to refer to another surgeon) thus conditioning an adequate review of the first surgical act. The Authors study the more frequently observed clinical features, post-surgical abdominal adhesive syndrome, cancer recurrence, incisional hernia. Former surgical diseases and the latter one may be the same, but not necessarily. Surgery is only a feature of the treatment (multimodal treatment) in case of neoplastic recurrence. Morbidity and mortality concerning the latter surgical procedure are higher than the mere sum of those related to both the former and last operation performed (pre-operative disease understaging). Finally it must be stressed the need for early and accurate diagnosis to clearly steer the choice and course of surgical action
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
Le modalità nella teoria narrativa greimasiana. Azioni, passioni e soggetti
No full textCome è cambiato l'impianto della semiotica narrativa con l'introduzione delle modalità? In questo saggio si ripercorre il dibattito sulle modalità così come si è sviluppato nella semiotica generativa, delineandone lo statuto teorico e metodologico, e mostrando come la riflessione sui processi di modalizzazione e sui valori modali abbia contribuito in modo rilevante alle evoluzioni e agli assestamenti della teoria, nonché al vaglio delle sue potenzialità euristiche. Provando a illustrare il modo in cui la descrizione semiotica della dimensione cognitiva e patemica dei discorsi si avvalga di categorie modali, il saggio si conclude con una breve analisi esemplificativa di alcuni degli strumenti discussi
Narratività, interfacce informatiche, usabilità
No full textIl capitolo affronta il tema dell'usabilità delle interfacce informatiche dal punto di vista della teoria semiotica classica della narratività e dei suoi sviluppi successivi, inserendosi nel filone di ricerche che, nell'ambito delle scienze cognitive, hanno applicato una certa nozione di narratività alla progettazione di interfacce informatiche e alla riflessione sulla loro usabilità. Dopo aver definito e discusso i confini entro cui questa applicazione può essere oggi proficua e interessante, il lavoro individua e approfondisce alcune aree (in particolare la semiotica del corpo e quella delle emozioni) da cui la riflessione contemporanea sulla Human Computer Interaction (HCI) può attingere contributi utili
Immunotoxic Effects of Legacy and Next-Generation PFAS on Earthworms: Insights for Environmental Regulation and Health Assessment
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