1,720,966 research outputs found
The Stroke in Italy and Related Impact on Outcome (SIRIO) study: design and baseline data
No full textPre-event Treatments In Patients With Intracerebral Hemorrhage: Better Outcome With Statins.
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Acute stroke admission and diagnostic procedures according to hour and day of onset: the SIRIO collaborative data
No full textBackground: Variations in stroke onset are related to stroke type and
severity. We evaluated the impact of hourly and daily stroke onset
variations on the pattern of patient hospital referral and on the time
interval from stroke onset to hospital admission and brain neuroimaging
investigations. Methods: This multicenter observational study recorded
all incident acute strokes within a 4-month period. Results: One hundred
and three participating centers collected data on 3,018 stroke cases.
Stroke onset was more frequent on Mondays and between 08.00 and 10.59 h.
Median time to admission after symptom onset was higher on Fridays
(173.5 min) and between 20.00 and 22.59 h (207 min). Rescue by ambulance
was associated with a greater stroke severity. Median time from hospital
admission to brain neuroimaging investigations was higher on Saturdays
(178.5 min) and between 23.00 and 10.59 h when the most severe strokes
were hospitalized. Conclusions: The pattern of patient hospital referral
and the time interval from stroke onset to hospital admission and brain
neuroimaging investigations varied widely according to the hour and
weekday of onset as well as to the reduced availability of hospital
resources. An adequate distribution of the available resources should be
planned in order to meet the demand
Variations on the Author
Get PDF“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
Get PDFWe 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
Get PDFWe 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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