1,720,974 research outputs found

    Predictive assessment of the asbestos content in the Western Italian Alps: an essential tool for an effective approach to Risk Analysis and Management in Tunneling operations and muck reuse

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    The modern approach to the design and management of tunnel excavation, and muck reuse, can be influenced to a great extent by the possible presence of rock formations containing asbestos minerals. This situation creates problems concerning the protection of theworkers' health and the expectable environmental criticalities, while a drastic re-consideration of the muck destination is necessary. Since, in the case of carcinogens, corrective action following exposure or dispersion is not acceptable, detailed knowledge of the haracteristics of the material to be excavated is all the more essential. Only on this basis it is possible to design the unneling operations in a prevention through design approach, so that the tunnel driving techniques, fittings and technologies, and special equipment and modus operandi, can grant, where necessary, minimized risk conditions, and make a correct decision on whether, how and when these measures must be fully activated, since such an approach involves a remarkable impact on costs and work organization. In the Western Alps a detailed identification and quantification of the asbestos content in rocks is a difficult task, due to the fact that the asbestos in the host rocks, mainly serpentinite, shows a highly variable distribution, typical of ophiolitic belts throughout the world, as it is mostly associated with joints and shear zones. The possibilities of a predictive assessment of the asbestos content in the formations to be excavated are here discussed, with special reference to the reliability of the achievable results

    Buon viso a cattivo gioco. Charles de Brosses e i giochi a Roma

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    Il contributo intende mettere in luce il punto di vista di un insigne turista francese del Settecento, Charles de Brosses, che visitò gli ambienti dei salotti romani dove, fra le altre attività di conversazione e balli, si svolgevano dei giochi molto in voga in questo secolo. L’intento è osservare non soltanto il modo in cui vengono descritti i giochi e le consuetudini della vita romana narrate nelle Lettres familières écrites d’Italie con lo sguardo del visitatore, ma anche prendere in considerazione la resa traduttiva della composizione epistolare di de Brosses compiuta da Rosario Pellegrino nel volume dedicato alle Lettere dall’Italia. Charles de Brosses a Roma in cui lo studioso ha ripercorso la natura e il contesto del Grand Tour. Attraverso l’analisi linguistica della XLIV lettera, la ricerca tende a individuare le peculiarità del linguaggio settoriale del gioco nel ’700 in Francia e si addentrerà nelle competenze linguistiche e ludiche del narratore illustrando le conoscenze acquisite delle dinamiche di gioco e di mondanità nel tessuto sociale romano altolocato dove riuscì ad inserirsi grazie ai suoi titoli onorifici e agli incarichi ufficiali ricoperti. Infine, illustrerà l’incisività delle dimensioni stilistica e linguistica in Charles de Brosses

    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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