1,720,960 research outputs found
Prenatal imaging of ductus venosus agenesis using 4D ultrasound with a matrix array transducer
No full textLe donne comprendono le informazioni sul Test Integrato Completo?
No full textINTRODUZIONE : in letteratura è stato ampiamente discusso il tema concernente la scelta informata in ambito di diagnosi prenatale che prevede che le donne una abbiano un adeguato bagaglio conoscitivo sia cognitivo che emotivo prima di decidere se sottoporsi al test. L’obiettivo principale della ricerca ivi presentata si propone di indagare se le donne che scelgono di sottoporsi al Test Integrato Completo abbiano un sufficiente livello di comprensione delle informazioni fornite dai medici attraverso la brochure informativa. Il secondo obiettivo della ricerca, non realizzato, concerne l’area etica ed emotiva ovvero rilevare i livelli di ansia e depressione e la percezione del rapporto di coppia.
METODO: in collaborazione con l’Unità Operativa di Ostetricia e Ginecologia alle donne gravide che hanno scelto di sottoporsi al Test Integrato Completo è stato consegnato un questionario sulla comprensione delle informazioni contenute nella brochure informativa (questionario creato ad hoc composto da 20 item); la compilazione del questionario è avvenuta in ospedale durante l’attesa del primo o del secondo prelievo.
RISULTATI: è stato reclutato un campione di 199 donne tutte di etnia europea e che utilizzano come prima lingua l’italiano. Dall’analisi statistica emerge come le tematiche meno comprese (risposte sbagliate) sono la sensibilità del test (59.80%) e l’esame diagnostico indicato per valore elevato dell’AFP(53.27%); le tematiche che sollevano più dubbi (risposte non so) sono il significato di risultato aumentato e il concetto di probabilità (20 – 30%); le tematiche più comprese (risposte corrette) sono la tempistica dei prelievi, l’utilità e in cosa consiste il Test integrato Completo (94 – 96%).
CONCLUSIONI: dalla ricerca è emerso come le donne abbiano un livello di comprensione delle informazioni contenute nella brochure informativa abbastanza elevato. Tale dato fa propendere verso l’ipotesi che le donne si sottopongano al Test Integrato Completo sulla base di un’autentica scelta informata per quanto concerne l’area cognitiva; ricerche future dovranno indagare l’area etica ed emotiva
Molecular and cytogenetic characterization of extra-structurally abnormal chromosomes (ESACs) found prenatally: outcome and follow-up
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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
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