1,721,096 research outputs found

    Correction: Groundwater circulation and earthquake-related changes in hydrogeological karst environments: a case study of the Sibillini Mountains (central Italy) involving artificial tracers (Hydrogeology Journal, (2020), 28, 7, (2409-2428), 10.1007/s10040-020-02207-w) [Correction]

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    The article “Groundwater circulation and earthquake-related changes in hydrogeological karst environments: a case study of the Sibillini Mountains (central Italy) involving artificial tracers”, written by T. Nanni, P. M.Vivalda, S. Palpacelli,M.Marcellini and A. Tazioli, was originally published electronically on the publisher’s internet portal on 21 July 2020 without open access. With the author(s)’ decision to opt forOpen Choice the copyright of the article changed on 13 August 2020 to © The Author(s) 2020 and the article is forthwith distributed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http:// creativecommons.org/licenses/by/4.0. The original article has been corrected

    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

    Variation of polyphenol and vitamin C fruit content induced by strawberry breeding

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    The modification of the lifestyle in modern society has underlined new crucial aspects from the nutritional point of view. Among fruits, strawberry received in the last years an increasing attention, and a growing number of scientific evidence demonstrated how a short-or a long-term consumption of strawberries could be beneficial for the consumers. The nutritional properties of strawberry depend on the amount and the profile of the bioactive and antioxidant compounds it contains (e.g., polyphenols and vitamins). The recent aim of different breeding programs is to select new strawberry cultivars having fruit with high concentrations of antioxidant compounds. In this study, 14 commercial cultivars and 5 advanced selections from the UNIVPM-D3A breeding program have been deeply evaluated for their nutritional quality for three consecutive years, from 2016 to 2018. The concentration of the main bioactive compounds, such as anthocyanins, phenolic acids, and vitamin C, were measured through HPLC-UV. Results demonstrate the high variability in bioactive compounds composition among cultivars and breeding materials and the possibility to generate new cultivars producing fruit with high contents of polyphenols and vitamins, stable at the different cultivation cycles, to be labelled with a compositional claim

    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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