1,721,045 research outputs found
progettare multicolor
No full textOccorre favorire la formazione di situazioni dalla forte
componente collaborativa affinché culture, discipline,
competenze e linguaggi possano contribuire
alla costituzione di una cultura del colore realmente
condivisa
Effects of artificially induced increases in intracranial pressure on epileptic activity
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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
Follow-up comparison of ventriculo-atrial and ventriculo-peritoneal shunts in the treatment of hydrocephalus in children
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Basilar Invagination, Bone Regrowth, Chiari malformation, Clivus, Odontoid Process, Transoral Odontoidectomy
No full textPurpose: Transoral odontoidectomy followed by occipito-cervical fixation is a widely
used approach to relieve ventral compressions at the craniovertebral junction (CVJ).
Despite the large amount of literature on this approach and its complications, no
previous reports of odontoid process and clival regeneration following transoral
odontoidectomy are present in the English literature.
Methods: We report the case of odontoid process and clival regeneration following
transoral odontoidectomy.
Results: A 7 year-old boy presented with symptoms of brainstem and upper cervical
spinal cord compression due to a complex malformation at the CVJ including a basilar
invagination with Chiari malformation. A successful transoral microsurgical endoscopicassisted
odontoidectomy extended to the clivus was performed. Clinical and
radiological resolution of the CVJ compression was evident up to two years post-op,
when the child had a relapse of some of the presenting symptoms and the follow-up
CT and MRI scans showed a quite complete regrowth of the odontoid process, clival
partial regeneration and recurrence of preoperative Chiari malformation.
Conclusions: A resection of the odontoid down to the dentocentral syncondrosis and
an accurate lateral removal of the bone surrounding the anterior tubercle of the Clivus
is advised when an anterior CVJ decompression is required in children below 10 years
of age.
Powere
The lumbar subarachnoid infusion test in infants
No full textThe authors describe the results obtained with the lumbar subarachnoid infusion test in 75 infants with suspected abnormalities in the cerebrospinal fluid dynamics. On the basis of the results obtained, an algorithm is proposed that enables infants with normal intracranial responses during the test to be differentiated from those with defective cerebrospinal fluid absorption mechanisms
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