1,720,988 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
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
Intima-media thickness and liver histology in obese children and adolescents with non-alcoholic fatty liver disease
No full textObjective: To evaluate the relationship between biopsy-proven non-alcoholic fatty liver disease (NAFLD) and carotid artery intima-media thickness (CIMT) in children and adolescents. Methods: A case-control study was performed. Cases were 31 mostly obese children and adolescents, with NAFLD detected at ultrasonography, and confirmed by liver biopsy. Controls were 49 mostly obese children matched for gender, age and BMI without NAFLD at ultrasonography and with normal levels of aminotransferases. Besides standard laboratory measurements, subjects underwent an oral glucose tolerance test to evaluate glucose tolerance and to estimate whole body insulin sensitivity (ISI). Results: CIMT was similar in cases and controls on the right side but higher in cases on the left side. Although statistically significant, this difference is unlikely to be clinically relevant because of substantial overlap of CIMT values between cases and controls. Moreover, there was no association between CIMT and the severity of steatosis, ballooning, fibrosis, and the non-alcoholic steato-hepatitis score in cases. At multivariable analysis in the pooled sample (n=80), age and the z-score of BMI but not NAFLD, gender, blood pressure and triglycerides, were associated with CIMT. Conclusions: We found no association between CIMT and NAFLD in children and adolescents. More importantly, there was no association between histological severity and CIMT in children with NAFLD
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
Il quadro clinico dell’anoressia infantile in una prospettiva transculturale: un confronto tra un campione di madri e di bambini italiani e del Bangladesh
No full textConsiderando la scarsità di ricerche empiriche sulle difficoltà alimentari di bambini immigrati nel contesto italiano, il nostro lavoro vuole offrire alcuni dati su bambini provenienti dal Bangladesh
che hanno avuto una diagnosi di anoressia infantile. Metodo: Il campione è composto da N=81 coppie di madri e di bambini, di cui N=27 provenienti dal Bangladesh con una diagnosi di anoressia infantile (A.I.), N=27 coppie italiane con una diagnosi di A.I. e N=27 coppie italiane di controllo. È stata effettuata una videoregistrazione durante lo scambio alimentare tra la madre e il bambino (Feeding Scale; Chatoor, Getson, Menvielle, Brasseaux, O’Donnell, Rivera e Mrazek, 1997). Inoltre, è stato somministrato uno strumento
report-form per valutare il profilo emotivo-adattivo dei bambini (CBCL/1½-5, Achenbach e Rescorla, 2000)
e sono stati utilizzati due questionari self-report per analizzare il funzionamento psicologico delle madri (SCL-
90-R, Derogatis, 1994; EAT-40, Garner e Garfinkel, 1979). Risultati: Per quanto riguarda le caratteristiche dell’interazione
madre-bambino emerge come entrambi i campioni clinici manifestino punteggi disfunzionali
nelle dimensioni relazionali indagate. Inoltre, è emerso che i bambini di entrambi i campioni clinici presentano
caratteristiche disadattive nel loro funzionamento emotivo-adattivo e le madri evidenziano un profilo psicologico a rischio in alcune aree specifiche. Conclusioni: Riteniamo che l’originalità di questo lavoro possa risiedere nell’aver cercato di sottolineare l’importanza che si compiano studi transculturali sui quadri clinici che possono manifestarsi nella prima infanzia, per poter pianificare interventi mirati e specifici
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