1,721,135 research outputs found
Tecnologie digitali e didattica laboratoriale nell’educazione STEM. Evidenze scientifiche e raccomandazioni pratiche
Full text linkL’educazione STEM (Science, Technology, Engineering, and Mathematics) gioca un ruolo strategico per lo sviluppo delle conoscenze e l’innovazione tecnologica. Considerata la rilevanza che assume l’istruzione scolastica per la formazione dei futuri professionisti in tale ambito, in questo lavoro, si presenta un quadro delle migliori evidenze scientifiche che la ricerca educativa ha elaborato sull’efficacia delle tecnologie e della didattica laboratoriale digitale per il miglioramento degli apprendimenti nell’educazione STEM. Sulla base di esse, si suggeriscono, inoltre, alcune raccomandazioni pratiche per la policy e la didattica quotidiana
Using storytelling to foster the teaching and learning of gravitational waves physics at high-school
Full text linkStudies in Physics Education Research show that interdisciplinary approaches in education foster students’ motivation, creativity, curiosity, and interest in physics. We discuss their features and potential role in bringing contemporary physics topics to high school and how to use them to integrate formal educational programs. We make an explicit example of the use of storytelling and theatrical techniques to introduce secondary school students to black holes and gravitational wave topics. The Educational Division of the Physics Department at the University of Cagliari designed the activity. Participants were 200 high-school students (17 to 19 years old) from five schools (scientific, humanities) in Sardinia. Through a research questionnaire, we measure the efficacy of using artistic tools to communicate and teach the proposed subjects. We collected 76 answers. Results show that our methodology helps introduce students to contemporary physics themes, fostering their interest and learning of such content. Students from the humanities significantly appreciated the use of poetry and artistic tools more than their scientific peers. Finally, we discuss the potentiality of our approach in orientating students towards a STEAM (STEM and Arts) caree
I laboratori online per l’apprendimento scientifico: sintesi delle evidenze
Full text linkIn this study, the results of a second-order systematic review concerning the impact of online (virtual and remote) laboratories on learning in STEM education for secondary school students are discussed. After the selection phase, based on eligibility criteria, ten systematic reviews and meta-analyses were included. The comparative analysis of data provides useful information for the instructional design of laboratory activities mediated by technologies and for the future research. In particular, results showed that online laboratories generally support learning outcomes comparable to those in traditional laboratories; and they suggest that some factors (e.g. teacher training; coherence of goals, laboratory activities, assessment; teacher feedback; integration of online-traditional laboratory activities) can maximize their efficacy. In addition, methodological limitations of current literature suggest the need for further primary studies with a more rigorous design.In questo lavoro, si presentano e discutono i risultati di una revisione sistematica di secondo ordine sull’efficacia dei laboratori online (virtuali e remoti) per il miglioramento degli apprendimenti nell’educazione STEM, in contesti di scuola secondaria. Al termine della fase di selezione, sulla base dei criteri di eleggibilità adottati, sono stati inclusi dieci studi secondari (revisioni sistematiche e meta-analisi). L’analisi comparativa di questi ultimi fornisce indicazioni utili per la progettazione didattica di attività laboratoriali mediate da tecnologie e per gli sviluppi futuri della ricerca. I risultati consentono di affermare che tendenzialmente i laboratori online permettono agli studenti di raggiungere risultati di apprendimento comparabili a quelli dei laboratori tradizionali e suggeriscono la rilevanza di determinati fattori (tra cui, la formazione degli insegnanti; la coerenza tra obiettivi, strategia laboratoriale e valutazione; il feedback dell’insegnante; l’integrazione tra attività laboratoriali online e in presenza) al fine di massimizzarne l’efficacia. Allo stesso tempo, si rilevano alcuni limiti metodologici della letteratura esistente, tali per cui ulteriori studi e un maggior rigore nel design di questi appaiono auspicabili
Subjects expressing the glucose-6-phosphate dehydrogenase deficient phenotype experience a lower cardiovascular mortality
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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
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