1,721,110 research outputs found
Respiratory care and Topics about serum levels of seven cytokines in premature newborns undergoing different ventilatory procedures
No full text
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
Cessione degli Npl e reazione dei mercati: c’è un vuoto a rendere?
No full textObiettivo del presente lavoro è quello di testare empiricamente la reazione del mercato
azionario alla cessione degli Npl da parte delle banche italiane, nell’orizzonte temporale
2014-2017. La metodologia utilizzata è l’event study. Il paper contribuisce alla letteratura
esistente dimostrando che il trasferimento di Npl produce un wealth effect positivo
per le banche cedenti, creando valore per gli azionisti. Il mercato sembra, dunque, apprezzare
il trasferimento degli Npl, valutando in modo favorevole gli effetti positivi a
essi legati, tra i quali la riduzione dell’assorbimento patrimoniale, l’afflusso di liquidità
e la possibilità di sostenere un nuovo ciclo di attività creditizia. Per contro, il mercato
sembra non mostrare preoccupazione per il possibile reinvestimento della liquidità ottenuta
in attività più rischiose o per gli effetti negativi connessi allo smobilizzo di crediti
a prezzi inferiori rispetto a quelli di bilancio
Cranial ultrasound evaluation in term neonates
No full textBACKGROUND:
Term neonates (TN) are not routinely submitted to cranial ultrasound scan (CUS), since they are not considered at high risk for developing cerebral lesions.
AIMS:
To investigate the prevalence of cerebral abnormal findings in term neonates (TN), to identify the associated clinical features and to better target neonatal CUS investigations.
STUDY DESIGN:
Prospective observational study.
SUBJECTS:
A total number of 1805 healthy TN underwent CUS. 1181 neonates had clinical features supposed to increase the risk for cerebral abnormal findings (study cohort), 624 were controls.
OUTCOME MEASURES:
Prevalence of minimal, minor, and major cerebral abnormal findings was analyzed in six different categories of low-risk TN and compared to controls.
RESULTS:
Variations from normality at the neonatal CUS were observed in 402 TN (22.27%). In half of the cases the ultrasound findings were minimal abnormal findings, while minor abnormal findings were found in 179 TN (9.92%). About 1% of the studied neonates showed major cerebral abnormal findings potentially compromising neurodevelopmental outcome. The prevalence of the observed abnormal findings varied significantly in the different low-risk categories.
CONCLUSIONS:
The clinical features significantly increasing the risk for cerebral anomalies in healthy TN were microcrania, macrocrania, mild neurologic signs, and the detection of mild variations from normal cerebral aspect at the antenatal ultrasound evaluatio
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
- …
