1,720,984 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
Una storia chiamata letteratura. Storia e antologia della letteratura italiana. Volume 2: Dal Barocco al Romanticismo
No full textL’opera è strutturata in ampie sezioni relative alle grandi periodizzazioni letterarie. Ciascuna sezione si apre con un quadro storico-culturale che presenta l’epoca a partire da un’immagine. I capitoli sono incentrati sui grandi autori, o su correnti e generi di un dato periodo.
Due rubriche in particolare riprendono gli elementi portanti dell’impianto didattico culturale dell’opera:
- Mondo interiore/Mondo esteriore: che collega il brano antologizzato con un’opera e un autore o un’autrice del Novecento, con opere della letteratura europea o con testi non letterari;
- Un personaggio per discutere: una riflessione per confrontarsi sul senso delle scelte effettuate dai grandi personaggi della letteratura, per dare attuazione e corpo al “laboratorio morale”.
Una terza rubrica (Obiettivo Esame. Io leggo con metodo) invece si fa carico di allenare al nuovo esame di Stato
Una storia chiamata letteratura. Storia e antologia della letteratura italiana. Volume 3A: Dal Naturalismo al Modernismo
No full textL’opera è strutturata in ampie sezioni relative alle grandi periodizzazioni letterarie. Ciascuna sezione si apre con un quadro storico-culturale che presenta l’epoca a partire da un’immagine. I capitoli sono incentrati sui grandi autori, o su correnti e generi di un dato periodo.
Due rubriche in particolare riprendono gli elementi portanti dell’impianto didattico culturale dell’opera:
- Mondo interiore/Mondo esteriore: che collega il brano antologizzato con un’opera e un autore o un’autrice del Novecento, con opere della letteratura europea o con testi non letterari;
- Un personaggio per discutere: una riflessione per confrontarsi sul senso delle scelte effettuate dai grandi personaggi della letteratura, per dare attuazione e corpo al “laboratorio morale”.
Una terza rubrica (Obiettivo Esame. Io leggo con metodo) invece si fa carico di allenare al nuovo esame di Stato
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
Evaluation of Residual Kidney Function during Once-Weekly Incremental Hemodialysis
No full textBackground: The initial once-weekly administration of incremental hemodialysis to patients with residual kidney function (RKF) has recently attracted considerable interest. Methods: The aim of our study was to assess the performance of a series of different methods in measuring serum urea nitrogen and serum Cr (sCr) RKF in patients on once-weekly hemodialysis (1WHD). Evaluations were carried out by means of 24-h predialysis urine collection (Kr-24H) or 6-day inter-dialysis collection (Kr-IDI) and estimation of glomerular filtration rate based on (KrSUN + KrsCr)/2 for the purpose of identifying a simple reference calculation to be used in assessing RKF in patients on 1WHD dialysis. Ninety-five urine samples were collected from 12 1WHD patients. A solute solver urea and Cr kinetic modeling program was used to calculate residual urea and Cr clearances. Mann-Whitney U test, Pearson's correlation coefficient (R), and linear determination coefficient (R-2) were used for statistical analysis. Results: 1WHD patients displayed a mean KrSUN-IDI of 4.5 +/- 1.2 mL/min, while KrSUN-24H corresponded to 4.1 +/- 0.9 mL/min, mean KrsCr-IDI to 9.1 +/- 4.0 mL/min, and KrsCr 24H to 8.9 +/- 4.2 mL/min, with a high regression between IDI and 24-h clearances (for IDI had R-2 = 0.9149 and for 24H had R-2 = 0.9595). A good correlation was also observed between KrSUN-24H and (KrSUN + KrsCR/2) (R-2 = 0.7466, p < 0.01. Discussion: Urine collection over a 24-h predialysis period yielded similar results for both KrSUN and KrsCr compared to collection over a longer interdialytic interval (KrSUN + KrsCr)/2 could be applied to reliably assess RKF in patients on 1WHD. Conclusion: The parameters evaluated are suitable for use as a routine daily method indicating the commencement and continued use of the 1WHD Incremental Program
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