1,720,996 research outputs found
Analysis of sleep stage characteristics in full-term newborn by means of spectral and fractal parameters
No full textStudy Objectives: In this work, we studied the behavior of the fractal dimension during each of the neonatal electroencephalogram (EEG) sleep phases and during the awake state, comparing the results with those of the classical spectral parameters and with zero crossing values. Design: Fractal dimension, zero crossing, and spectral parameters of the EEG bands were determined for each 2-second frame of the EEG sleep-time series. Eight channels of each EEG recording were examined. Participants: Twenty healthy full-term newborns (10 boys and 10 girls) with normal psychomotor development evaluated at 24 and 36 months of age, were chosen to participate in this study. Measurements and Results: Fractal analysis showed that where rhythmic and regular activity are present, as during quiet sleep, the fractal dimension is low and rises when bioelectric activity is more variable and complex, reaching its maximum value during wakefulness. The discriminative value of this parameter was similar to ..
Neuromotor deficits in developmental coordination disorder: Evidence from a reach-to-grasp task.
No full text
Il referente per la dislessia. La situazione nella Regione Friuli Venezia Giulia
No full textIl Ministero dell’Istruzione, dell’Università e della Ricerca, durante l’anno scolastico 2005-2006, ha incaricato l’Associazione Italiana Dislessia di realizzare un programma di formazione rivolto agli insegnanti, esteso a tutto il territorio nazionale (progetto «Azione 7»). L’obiettivo era creare la figura dell’insegnante referente, che potesse fornire una prima consulenza in tema di Disturbi Specifici dell’Apprendimento (DSA) già all’interno della scuola. Nell’ambito di un progetto di ricerca della SCO di Neuropsichiatria Infantile e Neurologia Pediatrica dell’IRCCS «Burlo Garofolo» di Trieste,1 che perseguiva anche l’obiettivo di fornire agli insegnanti gli strumenti per elaborare un intervento didattico-educativo precoce per gli alunni con difficoltà scolastiche, abbiamo quindi voluto verificare, a distanza di quattro anni, lo stato di realizzazione del progetto «Azione 7» e come il ruolo dell’insegnante referente venga vissuto ed espletato dagli insegnanti della Regione Friuli Venezia Giulia. La rilevazione è stata eseguita per mezzo di un questionario creato ad hoc e rivolto specificamente agli insegnanti referenti per valutare il tipo di attività svolta dall’insegnante referente nel mondo scolastico, la percezione nei confronti del proprio ruolo e i bisogni formativi ritenuti funzionali ad esso. I risultati della rilevazione documentano l’interesse degli insegnanti a sperimentarsi in questo nuovo ruolo e la richiesta di formazione e supervisione su casi specifici. Vengono quindi discusse alcune modalità operative che prevedono non solo la sensibilizzazione della dirigenza scolastica ma anche la costituzione di una rete tra scuola e strutture sanitarie, al fine di sostenere i referenti nell’attività consulenziale sui DSA
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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