1,720,998 research outputs found

    Il puzzle dell'innovazione didattica all'Università di Urbino: l'esperienza del CISDEL (Centro Integrato servizi Didattici ed E-learning

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    Il puzzle dell’innovazione didattica all’Università di Urbino: l’esperienza del CISDEL (Centro Integrato di Servizi Didattici ed E-learning) Flora Sisti – Giovanni Torrisi – Università Carlo Bo – Urbino Abstract (Italiano) I nuovi mezzi di comunicazione offrono un enorme potenziale per i processi di innovazione sociale, didattica e tecnologica del sistema universitario. Viviamo in una società liquida, dove l’informazione è ubiqua, i servizi sono globali e le popolazioni si spostano costantemente. In questo contesto, anche il ruolo dell’università cambia ed emergono nuove forme di apprendimento. L’ateneo di Urbino mette a sistema una tradizione già consolidata di servizi didattici grazie all’istituzione del CISDEL che fornirà un utile caso di studio nel presente contributo. Il CISDEL promuove un modello didattico istituzionalizzato che coniuga contenuti e prassi innovative con la dimensione tecnologica realizzata attraverso tre diverse piattaforme digitali: elearning.uniurb.it, dedicata ai servizi a distanza; blended.uniurb.it, che aggiunge alla tradizionale didattica in aula nuovi strumenti e modalità di apprendimento ed education.uniurb.it, riservata all’offerta di formazione per il life-longlearning. The Puzzle of Didactic Innovation at the University of Urbino: The CISDEL Experience (The Integrated Centre for University Didactic Services and E-Learning) Abstract (English) New means of communication offer enormous potential for processes of social, didactic and technological innovation within the university system. We live in a liquid society in which information is ubiquitous, services are global and populations move constantly. In this context, where new learning forms are emerging, the role of the university must change. The University of Urbino improves organizationally its consolidated tradition of didactic services to students and teachers thanks to the institutionalization of CISDEL, which becomes an interesting case-study for the present contribution. CISDEL promotes an innovative didactic model which combines new contents and teaching/learning strategies with ICT through three different online platforms: elearning.uniurb.it, dedicated to distance learning; blended.uniurb.it, which adds new tools and learning modes to traditional didactics; and education.uniurb.it, which offers high education life-long learning courses

    Bootstrap percolation on the stochastic block model

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    We analyze the bootstrap percolation process on the stochastic block model (SBM), a natural extension of the ErdH{o}s--R'{e}nyi random graph that incorporates the community structure observed in many real systems. In the SBM, nodes are partitioned into two subsets, which represent different communities, and pairs of nodes are independently connected with a probability that depends on the communities they belong to. Under mild assumptions on the system parameters, we prove the existence of a sharp phase transition for the final number of active nodes and characterize the sub-critical and the super-critical regimes in terms of the number of initially active nodes, which are selected uniformly at random in each community

    Modeling LEAST RECENTLY USED caches with Shot Noise request processes

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    In this paper we analyze Least Recently Used (LRU) caches operating under the Shot Noise requests Model (SNM). The SNM was recently proposed in [33] to better capture the main characteristics of today Video on Demand (VoD) traffic. We investigate the validity of Che's approximation through an asymptotic analysis of the cache eviction time. In particular, we provide a law of large numbers, a large deviation principle and a central limit theorem for the cache eviction time, as the cache size grows large. Finally, we derive upper and lower bounds for the ``hit" probability in tandem networks of caches under Che's approximation

    ChaRLeS: An Open-Source Chat Room Learning System

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    This work presents ChaRLeS – Chat Room Learning System, a virtual classroom recreating the environment of a physical university classroom within a learning management system. ChaRLeS has been developed to enhance the usability of the textual chat of Moodle, by taking inspiration from the one of Land of Learning. In order to guarantee a good level of portability and performance, ChaRLeS has been designed as a learning tools interoperability (LTI) provider, to be interfaced with Moodle and other LTI consumers, and has been implemented as a real-time web application

    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

    Variations on the Author

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    “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

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    We 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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