1,721,001 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
Interventi di prevenzione delle cadute negli anziani con particolare attenzione agli aspetti relativi alla partecipazione dei soggetti
No full textAndamento della natimortalità, della mortalità perinatale ed infantile nelle diverse regioni italiane : 1990-2002
No full textNegli ultimi 15 anni la realtà sociale italiana è marcatamente cambiata, sia con riferimento ad una maggiore diffusione dell'assistenza ostetrica in tutte le regioni, sia al fenomeno migratorio. Abbiamo analizzato i dati relativi al numero di nati vivi e nati morti in Italia, entro il primo anno di vita. Il tasso di natimortalità ha mostrato temporanei aumenti nel corso degli anni, tuttavia ha teso complessivamente alla diminuzione, passando da 5,42 nati morti per 1000 nati nel 1990 a 3,15 nel 2002, una riduzione pari al 42%.
Con riferimento alla mortalità perinatale, nel periodo 1990-2002 è diminuita da 10,46 a 5,44/1000 nati. Nel 1990 il tasso il tasso di mortalità infantile in Italia era pari a 8,18 morti nel primo anno di vita su 1000 nati vivi, il valore corrispondente nel 2002 era pari a 4,36 su 1000 nati vivi. I dati aggregati per ampie aree geografiche mostrano una diminuzione costante in tutte le aree, dove le differenze tra i tassi vanno riducendosi, pur permanendo una differenza tra Nord e Centro, Sud e Isole.In this paper we have analysed the temporal trend of stillbirth rates and perinatal and infant mortality rates during the period 1990-2002 in the various Italian regions, using data of the Health for All software provided in Italy by the national Institute for Health. The still birth rates declined from 542 stillbirth/1000 birth in the 1990 to 3.15/1000 birth in the 2002 with a reduction equal to 42%. Considering the perinatal mortality rates, the rate was 10.46/1000 births during the 1990 and 5.44/1000 births during the 2002. Otherwise, the infant mortality rate was 8.18/1000 live births during the 1990 and 4.36/1000 live births during the 2002. Considering the rates in the various Italian regions we observed that the rates were generally higher in the south areas of the country and in the island, but in general we observed a reduction of the differencies among the various Italian regions during the considered period
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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