1,721,201 research outputs found

    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

    Automatic extraction of acoustic features to predict Alzheimer's disease among English-speaking subjects

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    Dementia is a disease characterized by the decline of cognitive function. Previous studies have shown that speech conveys information about health and cognitive status. The current work aims at validating the capability of a set of acoustic features automatically extracted from voice recordings to classify the level of cognitive decline. To reach this aim, the Pitt Corpus, a dataset of 458 recordings of English-speaking subjects, has been exploited. A Support Vector Machine classifier achieved the best classification performance, with an F1-score of 78% to distinguish people with a diagnosis of Alzheimer's Disease (AD) from non-AD subjects. An improvement of the classification performance was achieved by two gender-based classifiers, which obtained an F1-score of 83% and 88% for female-based and male-based classifiers, respectively. The results of this study confirmed the possibility to predict AD based on acoustic features automatically extracted from voice recordings. Since no manual intervention was required in data processing, the proposed algorithm is a good candidate for being implemented on a mobile application so as to implement an ecological momentary assessment of people at risk of cognitive decline

    Apprestamenti produttivi tardo repubblicani nell’urbanistica di Norba

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    La ripresa delle indagini topografiche e archeologiche a Norba ha permesso di individuare alcuni edifici lungo il proncipale asse viario che offrono elementi utili a a ricostruire nel contesto urbano aspetti e luoghi della produzione. Si presentano due settori con caratteri produttivi e ipotesi per i luoghi della produzione ceramica

    Norba: apporti sull'edilizia privata in epoca medio repubblicana. Le domus a valle dell'Acropoli Minore dallo scavo alla fruizione

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    Il lavoro espone i risultati storico-topografici e di cultura materiale emersi dagli scavi archeologici di due domus rinvenute in un settore della città antica intensamente abitato posto ai piedi dell'Acropoli Minore,scavate a Norba dal gruppo di ricerca del Dipartimento di Studio delle Componenti Culturali del Territori
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