1,721,071 research outputs found
Lo scenario internazionale delle piccole scuole: un’analisi relativa al ruolo delle TIC
No full textLe piccole scuole, che si caratterizzano per la forte presenza delle pluriclassi, sono un fenomeno diffuso a livello mondiale (Hattie, 2002; Kalaoja & Pietarinen, 2009; Little, 2001; Smit & Engeli, 2015). L'assenza in Italia di studi comparativi ha motivato il gruppo di ricerca di INDIRE all'avvio di una rassegna internazionale circoscritta a tre paesi (Francia, Québec e Marocco) molto diversi tra loro dal punto di vista sociale, economico e culturale ma con una presenza significativa di piccole scuole. Questa analisi permette oggi di comprendere e mettere a confronto elementi didattici, organizzativi, strumentali, sociali e di sviluppo professionale come fattori chiave per poter inquadrare e comprendere le strategie di gestione e di sostegno promosse a livello sia top down che bottom up nei vari paesi. Il lavoro permette inoltre di far emergere spunti interessanti che consentono alla ricerca italiana di intraprendere interventi sul campo e promuovere raccomandazioni politiche atte a migliorare le policy nazionali e sostenere un percorso che guarda alla qualità formativa e alla sostenibilità dei presidi culturali nei territori periferici grazie in particolare al supporto delle tecnologie
dell'informazione e della comunicazione (TIC)
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
Adaptive low cost gravity balanced orthosis
No full textIn this paper a novel design of a non-powered orthosis for stroke rehabilitation is reported. Designed for home based use, it is the first low-cost, passive design to incorporate an assistive level that can be adaptively varied within a closed-loop control scheme. This allows the device to be integrated with a dual robotic and electrical stimulation control scheme, to thereby enable full exploitation of the motor relearning principles which underpin both robotic therapy and Functional Electrical Stimulation (FES) based stroke rehabilitation. This embeds the potential for more effective treatment. The paper focuses on the mechanical design of the non-powered orthosis, providing detailed design, dynamic analysis and evaluation
“Avanguardie educative”. Linee guida per l’implementazione dell’idea “Apprendimento differenziato”, versione 1.0 [2017]
No full textElectrical characterization of deoxyribonucleic acid hybridization in metal-oxide-semiconductor-like structures
No full textIn this work, metal-oxide-semiconductor (MOS)-like sensors in which deoxyribonucleic acid (DNA) strands are covalently immobilized either on Si oxide or on a gold surface were electrically characterized. Si oxide fabrication process allowed us to have a surface insensitive to the solution pH. A significant shift in the flat band voltage was measured after single strand DNA immobilization (+0.47 ± 0.04 V) and after the complementary strand binding (+0.07 ± 0.02 V). The results show that DNA sensing can be performed using a MOS structure which can be easily integrated in a more complex design, thus avoiding the problems related to the integration of micro-electrochemical cells
Comparison between textured SnO_2:F and Mo contacts with the p-type layer in p–i–n hydrogenate amorphous silicon solar cells by forward bias impedance analysis
Full text linkIn this paper we compare the performance of the textured SnO_2:F and Mo contacts with the p-type layer in p–i–n hydrogenate amorphous silicon (a-Si:H) solar cells. We use standard current–voltage (I–V) electrical characterization methods coupled with forward bias small signal impedance analysis. We show the efficacy of this technique to determine the effective carrier lifetime in photovoltaic cells. We
show that such effective lifetimes are indeed directly connected to the respective dark diode saturation currents. We also find that the effective lifetime is constant with the temperature in the 0–70 °C range and it is significantly better for the solar cell with Mo diode contact. This also explains well the higher open circuit voltage Voc found under illumination in the Mo/p–i–n cell compared to the SnO_2:F/p–i–n one
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
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