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    The permanent Oriented World Globe installation at Roma Tre University

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    The Oriented World Globe (or Parallel Globe) is a common terrestrial globe whose axis is inclined with respect to horizontal plane at an angle equal to the latitude of the site (for Roma approximately 42°) and oriented along the meridian. I this way the axis will point towards North Celestial Pole, N.P. (Fig. 1) and will result parallel to the terrestrial axis. Placing the line of the meridian of the site represented on the globe map in coincidence with the true local meridian, the globe will show in real time the pattern of illumination of the Earth’s surface and its diurnal and seasonal variations. Since the terrestrial radius is negligible respect to the Earth-Sun distance, with good approximation we can consider the globe to be placed in the centre of the Celestial Sphere. Nevertheless such a Ptolemaic view, the globe turns out to be an ideal tool for a modern interdisciplinary teaching and meaningful learning of Astronomy, Geometry, Mathematics, Physics and Natural Sciences. For this reason small oriented world globe are commonly used in educational activities at school. The globe located in the centre of the Chiostro garden of the Physics Department E. Amaldi has been designed following the criteria recently proposed in the field of Architecture (Bozic et al. 2005) on the possible direct educational role of the indoor and outdoor spaces of schools and universities when these are arranged according to the principles of hands-on experiments

    Real sky through small telescopes

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    In a big town where the night sky is virtually invisible and if often only a virtual experience a telescope is the best channel for the real sky. Even a small telescope. Moon, planets, double stars and some deep sky objects become real objects viewed through an eyepiece or by means of modern CCD In the last few years, in the nice location of our Astrogarden, we did a lot of public outreach and educational activities using small telescopes. Our results show that these activities are very efficient in the broadening of understanding of astronomy and science with the public, in stimulating scientific interests with the young people and in developing useful skills in university students

    Fisica non formale Un’esperienza nell’ambito del Progetto Nazionale Lauree Scientifiche

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    Un insegnamento della fisica che attinga anche a modalità non formali può svolgere un ruolo chiave nella formazione dei futuri fisici e, in prospettiva, sulla percezione che la società ha della fisica. Tra gli elementi che caratterizzano l’apprendimento non formale, assume grande evidenza la centralità dell’aspetto sociale e cooperativo, che si fonda sulla qualità della relazione umana e sulla condivisione di spazi e tempi poco strutturati in un contesto adeguato. Viene qui presentata e discussa un’esperienza fondata su questi elementi, svolta nella primavera del 2007: un Campo Scuola di Fisica realizzato presso il Museo del Balì e inserito nel contesto del Progetto Lauree Scientifiche del Collegio Didattico di Fisica dell’Università Roma Tre

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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
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