1,721,113 research outputs found

    A standardized battery of tests to measure Octopus vulgaris’ behavioural performance

    No full text
    Here we introduce a series of behavioural tasks to assess inter-individual variability in behaviours exhibited by the cephalopod mollusc Octopus vulgaris. We propose that, by using octopus’ predatory behavioural response, it is possible to measure: (1) the ability to adapt to the captive condition (acclimatization), (2) the response towards novel stimuli (neophobia), (3) the capability of social learning, (4) the ability of solving problems (problem solving), and (5) the response to artificial stimuli (preferences, individual learning). To assure comparability and reproducibility of results, this battery of tests is here applied to a large sample of individuals in standardized experimental conditions. Such battery of tests serves as an in vivo screening that should be adopted not only to investigate cognitive abilities in specific behavioural domains, but also to monitor the welfare status of animals under captivity, thus to check sensory functions as well as motor abilities in other investigations within the fields of biology and neuroscience. Our aim was to provide a reliable tool to exploit this animal species for research in different fields

    Going Beyond Counting First Authors in Author Co-citation Analysis

    Full text link
    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

    The three years MOOC. Experience of the University of Foggia.

    Full text link
    Le numerose esperienze di alta formazione online, accanto allo sviluppo delle tecnologie e dei media digitali a supporto della didattica, hanno reso indispensabili una serie di azioni volte a sostenere le pratiche didattiche nelle università. A partire dalle raccomandazioni internazionali, dal 2016 l’Università di Foggia ha intrapreso una serie di azioni volte a promuovere un processo di rinnovamento delle pratiche e dei servizi, in risposta alle esigenze dei docenti universitari e degli studenti. All’interno del portale Eduopen, l’Ateneo foggiano ha erogato diversi corsi con l’obiettivo di innovare e riprogettare gli ambienti di apprendimento e sperimentare nuove tecnologie e metodologie, incoraggiando la partecipazione di tutti gli attori coinvolti. Tali aspetti sono strettamente collegati alla qualità della didattica, alla progettazione di percorsi di apprendimento in presenza e online, alla gestione di piattaforme e di risorse destinate non soltanto agli studenti iscritti ai singoli atenei, ma pensati per un pubblico globale. In questo primo triennio, l’Università di Foggia ha erogato circa 30 corsi MOOC rivolti ad una utenza piuttosto variegata e composta per lo più da studenti universitari, docenti, professionisti o semplici “curiosi”. Lo studio qui presentato, si configura come un primo tentativo di analisi descrittiva volta a fornire una accurata rappresentazione del fenomeno del dropout che si è verificato all’interno dei corsi MOOC offerti dall’ateneo foggiano. L’analisi parte da una lettura preliminare che aggrega i dati dell’offerta formativa MOOC considerando cinque variabili, limitatamente a 28 corsi dei 32 totali poiché sono stati esclusi i 4 Courseware. In questa fase, la lettura dei dati ha unicamente lo scopo di descrivere dropout al fine di prevedere la probabilità di abbandono e quindi attivare strategie di retention che saranno oggetto della fase successiva dello studio

    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 link
    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
    corecore