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    Insights into the Urogymnid whiprays (Chondrichthyes: Batoidea) in the Persian Gulf and the Gulf of Oman, with an amendment of their diagnostic characteristics and dispersal range

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    Golzarianpour, Kiavash, Malek, Masoumeh, Golestaninasab, Mehdi, Sarafrazi, Alimorad, Kochmann, Judith, Klimpel, Sven (2020): Insights into the Urogymnid whiprays (Chondrichthyes: Batoidea) in the Persian Gulf and the Gulf of Oman, with an amendment of their diagnostic characteristics and dispersal range. Zootaxa 4819 (2): 316-334, DOI: https://doi.org/10.11646/zootaxa.4819.2.

    FIGURE 7 in Insights into the Urogymnid whiprays (Chondrichthyes: Batoidea) in the Persian Gulf and the Gulf of Oman, with an amendment of their diagnostic characteristics and dispersal range

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    FIGURE 7. Maculabatis gerrardi (MM1619, male, DW= 27.2 cm), off Bushehr in the Persian Gulf. scale=10 cm.Published as part of Golzarianpour, Kiavash, Malek, Masoumeh, Golestaninasab, Mehdi, Sarafrazi, Alimorad, Kochmann, Judith & Klimpel, Sven, 2020, Insights into the Urogymnid whiprays (Chondrichthyes: Batoidea) in the Persian Gulf and the Gulf of Oman, with an amendment of their diagnostic characteristics and dispersal range, pp. 316-334 in Zootaxa 4819 (2) on page 331, DOI: 10.11646/zootaxa.4819.2.5, http://zenodo.org/record/439695

    KIAVASH GOLZARIANPOUR, MASOUMEH MALEK, MEHDI GOLESTANINASAB ALIMORAD SARAFRAZI, JUDITH KOCHMANN & SVEN KLIMPEL (2021) Insights into the Urogymnid whiprays (Chondrichthyes: Batoidea) in the Persian Gulf and the Gulf of Oman with an amendment of their diagnostic characteristics and dispersal range. Zootaxa, 4819 (2)

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    Golzarianpour, Kiavash, Malek, Masoumeh, Golestaninasab, Mehdi, Sarafrazi, Alimorad, Kochmann, Judith, Klimpel, Sven (2021): KIAVASH GOLZARIANPOUR, MASOUMEH MALEK, MEHDI GOLESTANINASAB ALIMORAD SARAFRAZI, JUDITH KOCHMANN & SVEN KLIMPEL (2021) Insights into the Urogymnid whiprays (Chondrichthyes: Batoidea) in the Persian Gulf and the Gulf of Oman with an amendment of their diagnostic characteristics and dispersal range. Zootaxa, 4819 (2). Zootaxa 4903 (4): 599-599, DOI: https://doi.org/10.11646/zootaxa.4903.4.

    FIGURE 1 in Insights into the Urogymnid whiprays (Chondrichthyes: Batoidea) in the Persian Gulf and the Gulf of Oman, with an amendment of their diagnostic characteristics and dispersal range

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    FIGURE 1. Bayesian inference topology results from the phylogenetic analysis of 1044-bp of the ND2 gene for urogymnid species from the Persian Gulf, the Gulf of Oman and the relevant taxa from GenBank. Bayesian posterior probabilities (PP) are given at nodes. Taxon names are followed by their collection code and/or GenBank accession numbers. Specimens from the Persian Gulf and the Gulf of Oman for which sequence data were generated in the course of this study are in bold.Published as part of Golzarianpour, Kiavash, Malek, Masoumeh, Golestaninasab, Mehdi, Sarafrazi, Alimorad, Kochmann, Judith & Klimpel, Sven, 2020, Insights into the Urogymnid whiprays (Chondrichthyes: Batoidea) in the Persian Gulf and the Gulf of Oman, with an amendment of their diagnostic characteristics and dispersal range, pp. 316-334 in Zootaxa 4819 (2) on page 322, DOI: 10.11646/zootaxa.4819.2.5, http://zenodo.org/record/439695

    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

    Brevitrygon imbricata Bloch & Schneider

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    Brevitrygon imbricata or Brevitrygon walga ? Previous molecular studies suggested that B. walga is the only representative of the genus Brevitrygon in the Persian Gulf and the Gulf of Oman (Naylor et al. 2012).Also, the recent revision by Last et al. (2016a) remarked that among four species of the genus Brevitrygon, both B. walga and B. imbricata are restricted to the Indian Ocean while the first is common in the northwestern part of the region (The Persian Gulf and the Gulf of Oman) and the last one inhabits western waters of India (Last et al. 2016b). It seems that some previous reports (Henderson and Reeve 2011; Almoji et al. 2015) and sequences deposited in the databases (Henderson et al. 2016; Naylor et al. 2012) might belong to misidentified specimens (Gavin Naylor pers. comm.). Therefore, all materials in our collection were morphologically re-examined. The results revealed that specimens collected from the Persian Gulf and the Gulf of Oman have up to 12 enlarged thorns on the base of the tail, 2 (n=60) to 3 (n=29) stinging spines, and the denticle band does not cover the trunk area, which is consistent with all diagnostic characteristics of B. walga. So, the current morphological and molecular (e.g. branch support and genetic distance) evidence support the idea that there is a monophyletic clade and B. walga is the only representative of the genus in the region. Recently, Fernando et al. (2019) reported an unknown taxon that clustered closely to well outside the species. This finding shows that there may be more cryptic species in the genus and more detailed examination should be conducted.Published as part of Golzarianpour, Kiavash, Malek, Masoumeh, Golestaninasab, Mehdi, Sarafrazi, Alimorad, Kochmann, Judith & Klimpel, Sven, 2020, Insights into the Urogymnid whiprays (Chondrichthyes: Batoidea) in the Persian Gulf and the Gulf of Oman, with an amendment of their diagnostic characteristics and dispersal range, pp. 316-334 in Zootaxa 4819 (2) on page 330, DOI: 10.11646/zootaxa.4819.2.5, http://zenodo.org/record/439695

    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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