1,721,036 research outputs found
Profili associati al disturbo da deficit di attenzione e iperattività nella scuola dellâ€TMinfanzia
No full textCon questo contributo si intende indagare la relazione fra sintomi di DDAI e i prerequisiti dell’apprendimento nei bambini frequentanti l’ultimo anno di scuola dell’infanzia. Per questa ricerca gli strumenti utilizzati sono stati il questionario IPDA (Terreni et al., 2002), la scala IPDDAI (Marcotto, Paltenghi, Cornoldi, 2002) e il questionario CONNERS (Conners Teacher Rating Scale Revised CTRS-R, a cura di Keith Conners 1969). I risultati ottenuti mostrano relazioni buone fra le variabili e sono a favore di una possibile identificazione precoce del disturbo DDAI in età prescolare. Tali dati sostengono la possibilità di individuare tempestivamente quei bambini che vengono segnalati per alcune difficoltà di attenzione e di comportamento con ricadute sul piano degli apprendimenti e di favorire dei piani di intervento al fine di poter intervenire sul recupero delle abilità carenti a rischio di difficoltà
Aspects of motor and cognitive patterns related to functional capacity in Huntington's disease.
No full textResults of this study confirm that impairment of voluntary movements tested by RT and FT are impotant signs of motor pattern of HD, even in early stages. The significant correlation found between multiple choice reaction times tests and TFC seems to suggest that early in the disease a reduction of ability in complex motor planning is associated with functional decline and marks HD evolution more than hyperkinesias and psychic impairment
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
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 exoscope in neurosurgery: An overview of the current literature of intraoperative use in brain and spine surgery
Full text linkBackground: Exoscopes are a safe and effective alternative or adjunct to the existing binocular surgical microscope for brain tumor, skull base surgery, aneurysm clipping and both cervical and lumbar complex spine surgery that probably will open a new era in the field of new tools and techniques in neurosurgery. Methods: A Pubmed and Ovid EMBASE search was performed to identify papers that include surgical experiences with the exoscope in neurosurgery. PRISMA guidelines (Preferred Reporting Items for Systematic Reviews and Meta‐analyses) were followed. Results: A total of 86 articles and 1711 cases were included and analyzed in this review. Among 86 papers included in this review 74 (86%) were published in the last 5 years. Out of 1711 surgical procedures, 1534 (89.6%) were performed in the operative room, whereas 177 (10.9%) were performed in the laboratory on cadavers. In more detail, 1251 (72.7%) were reported as brain surgeries, whereas 274 (16%) and 9 (0.5%) were reported as spine and peripheral nerve surgeries, respectively. Considering only the clinical series (40 studies and 1328 patients), the overall surgical complication rate was 2.6% during the use of the exoscope. These patients experienced complication profiles similar to those that underwent the same treatments with the OM. The overall switch incidence rate from exoscope to OM during surgery was 5.8%. Conclusions: The exoscope seems to be a safe alternative compared to an operative microscope for the most common brain and spinal procedures, with several advantages that have been reached, such as an easier simplicity of use and a better 3D vision and magnification of the surgical field. Moreover, it offers the opportunity of better interaction with other members of the surgical staff. All these points set the first step for subsequent and short‐term changes in the field of neurosurgery and offer new educational possibilities for young neurosurgery and medical students
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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