1,721,024 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
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
Energy consumption management in Smart Homes: An M-Bus communication system
Full text linkEnergy consumption management in Smart Home environments relies on the implementation of systems of cooperative intelligent objects named Smart Meters. In order for devices to cooperate to smart metering applications' execution, they need to make their information available. In this paper we propose a framework that aims at managing energy consumption of controllable appliances in groups of Smart Homes belonging to the same neighbourhood or condominium. We consider not only electric power distribution, but also alternative energy sources such as solar panels. We define a communication paradigm based on M-Bus for the acquisition of relevant data by managing nodes. We also provide a lightweight algorithm for the distribution of the available alternative power among houses. Performance evaluation of experiments in simulation mode prove that the proposed framework does not jeopardise the lifetime of Smart Meters, particularly in typical situations where managed devices do not continuously turn on and off
The Shortened Visuo-Spatial Questionnaire for Children: A New Tool to Identify Students with Low Visuo-Spatial Abilities
No full textThe current research was aimed mainly at exploring the reliability of a short-screening tool developed to self-evaluate visuospatial abilities in children. We presented 290 Italian third, fourth, and fifth graders with the 16-item Shortened Visuospatial questionnaire and several objective measures of intellectual efficiency, such as Raven's Coloured Progressive Matrices test, and verbal meaning, spatial relations, and perceptual speed measures based on the Primary Mental Abilities Battery. At the same time, a corresponding 18-item Shortened Visuospatial questionnaire was administered to teachers. Results show a sufficient connection between the visuospatial index of the Shortened Visuospatial questionnaire for children, its counterpart developed for teachers, and objective measures of intellectual efficiency. Finally, Raven's Coloured Progressive Matrices score accurately predicted the visuospatial index of the Shortened Visuospatial questionnaire completed by children. In conclusion, the Shortened Visuospatial questionnaire is a rapid and reliable tool for the early screening of visuospatial deficits
Individuare i disturbi visuo-spaziali a scuola: quali fattori influenzano i punteggi nei questionari SVS-insegnante e SVS-bambino?
No full textIl presente studio e stato condotto per verificare quali fattori influenzano la compilazione del questionario SVS-insegnante e SVS-bambino, due strumenti sviluppati per l'individuazione di studenti con problematiche visuo-spaziali. Centocinquantasei bambini frequentanti le classi terze, quarte e quinte di alcune scuole sarde hanno compilato il questionario SVS-bambino e sono stati sottoposti ad una batteria di prove oggettive per la valutazione dell'efficienza intellettiva verbale e visuo-spaziale, mentre le loro maestre hanno compilato il questionario SVS-insegnante. I risultati dimostrano che i questionari SVS-bambino e SVS-insegnante sono influenzati da una serie di fattori aspecifici ma rimangono degli utili strumenti per lo screening precoce dell'efficienza delle funzioni visuo-spaziali nella scuola primaria e per l'identificazione di bambini con profilo di disturbo nonverbale
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