1,720,976 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
An experimental model of gastroschisis using fetoendoscopy: preliminary results and technical considerations
No full textBackground: The aim of this study was to show the feasibility
of an experimental model of gastroschisis using fetoendoscopic
surgery on sheep fetuses, and also to perform
amnioinfusion until delivery using an in-dwelling intraamniotic
catheter.
Methods: We analyzed the data from 18 pregnant ewes
having 26 fetuses, which underwent surgery at 80 days of
gestation (full term, 145 days). The fetendo technique was
used to create a gastroschisis in 15 fetuses. The fetal abdominal
wall was opened on the left side of the cord using
scissors. The omentum and the intestinal loops were eviscerated
using atraumatic forceps. Eleven fetuses were used
as a control group. Twenty-one fetuses underwent amnioinfusion;
a simple exteriorized catheter was used in seven
cases and an intraamniotic catheter with an implantable port
was used in the other 14. All ewes and fetuses were killed
at the end of the experiment by an intravenous injection of
pentotal; thereafter, the fetuses underwent necropsy.
Results: Twelve fetuses died and 14 survived (53.8%);
seven of the 15 that underwent gastroschisis survived
(46.7%). An amniotic infection occurred in nine fetuses
(34.6%); of these, six died and three that were administered
antibiotics survived.
Conclusions: Our experience shows that this experimental
model of gastroschis is feasible and reproducible, and that a
repeated amnioinfusion can be performed with an indwelling
catheter in pregnant ewes. The use of an implantable
port is safer than a simple exteriorized catheter
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
Epidemiology of Lyme borreliosis in Alpe Adria area
No full textThe distribution of Lyme borreliosis reflects the geographic areas where the vectors are present. Bavaria, Austria, Hungary, Slovenia, Croatia and Northeastern Italy are countries where geography, climate and fauna justific the spreading of Ixodes ricinus. The infection is endemic in the woody areas of Western and Central Croatia, while it is rare in Istria and Dalmatia. In Italy the endemic areas are the Alps and their neighbouring countries as Friuli-Venezia Giulia, Liguria and Trentino Alto Adige. Borrelia infection is very frequent in Austria and Bavaria. Recent studies demonstrated that B. burgdorferi sensu stricto, B. garini and B. afzelii are all present in Alpe Adria areas. These data could explain why in Alpe Adria areas the prevalence of arthritis is lower than in the USA, where neurological manifestations are more common and where only Borrelia burgdorferi sensu stricto has been observed. These data and other regional differences observed confirm the relationship of the geographical diversity of Lyme Borreliosis clinical manifestations and certain species of Borrelia burgdorferi
An experimental model of gastroschisis using fetoendoscopy: preliminary results and technical considerations
No full textBackground: The aim of this study was to show the feasibility
of an experimental model of gastroschisis using fetoendoscopic
surgery on sheep fetuses, and also to perform
amnioinfusion until delivery using an in-dwelling intraamniotic
catheter.
Methods: We analyzed the data from 18 pregnant ewes
having 26 fetuses, which underwent surgery at 80 days of
gestation (full term, 145 days). The fetendo technique was
used to create a gastroschisis in 15 fetuses. The fetal abdominal
wall was opened on the left side of the cord using
scissors. The omentum and the intestinal loops were eviscerated
using atraumatic forceps. Eleven fetuses were used
as a control group. Twenty-one fetuses underwent amnioinfusion;
a simple exteriorized catheter was used in seven
cases and an intraamniotic catheter with an implantable port
was used in the other 14. All ewes and fetuses were killed
at the end of the experiment by an intravenous injection of
pentotal; thereafter, the fetuses underwent necropsy.
Results: Twelve fetuses died and 14 survived (53.8%);
seven of the 15 that underwent gastroschisis survived
(46.7%). An amniotic infection occurred in nine fetuses
(34.6%); of these, six died and three that were administered
antibiotics survived.
Conclusions: Our experience shows that this experimental
model of gastroschis is feasible and reproducible, and that a
repeated amnioinfusion can be performed with an indwelling
catheter in pregnant ewes. The use of an implantable
port is safer than a simple exteriorized catheter
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
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
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