1,721,558 research outputs found

    Connessioni. Alexander von Humboldt precursore degli studi sull’Antropocene?

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    In this short article I try to support the idea that in Alexander von Humboldt’s works there are some interesting insights into the effects of human activities in ecosystems and about the interrelationships between the various elements of the ecosphere. Such insights are the result of his fieldwork during the exploration in various South American regions between 1799 and 1804

    Antropocene. Per un’antropologia dei mutamenti socioambientali

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    Il volume esamina il dibattito sull'Antropocene nelle scienze sociali e il suo impatto nell'immaginario mediatico. Mette alla prova il concetto di Antropocene per quanto riguarda i mutamenti socio-ambientali dell'area lagunare di Cagliari (Sardegna, Italia). La ricerca e il volume si situano nell'ambito del PRIN2015 "Ecofrizioni dell’antropocene. Antropologia della sostenibilità e patrimonializzazione nei processi di riconversione industriale", coordinatore nazionale Prof. Berardino Palumbo (Università di Messina)

    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

    Environnement et tourisme dans les territoires fragiles : le cas des zones humides de la Sardaigne

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    During the 20th century two main interventions have been intended for coastal wetlands in Sardinia. Throughout the first part of the century Sardinian wetlands have been targeted for drainage to obtain productive agricultural land. At the end of the forties wetlands were drained in order to eradicate malaria. From the second half of the 20th century ponds become significant also for nature conservation and tourism development (see the case of Doñana in Spain and the Camargue in France). In Sardinia wetlands are important as avifauna habitats (see the Ramsar Convention), tourism attractions and environmental conservation sites. In this paper we will present the process of tourist promotion of wetlands, the opportunities and the risks of this process with some empirical cases

    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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