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Ladinian conodont apparatuses from Northwestern Sardinia, Italy.
No full textA conodont fauna of Middle Triassi cage (Fassanian) was recorded from Punta del Lavatoio and Contrada Renuzzo setions (Nurra, northwestern Sardinia, Italy). The species are described interms of multielement taxonomy. The presence of "Epigondolella" truempyi is indicative of the upper curionii Xone (Late Fassanian)
Late and latest Famennian conodonts at the Malpasso section.
Full text linkConodont biostratigraphic and taxonomic analysis of the Malpasso section were presented by Perri & Spalletta (1991, 1998). The abundant ammonoid fauna was studied by Korn & House (1997) and Korn (1998). In Spalletta & Perri (2001) the section was proposed as possible candidate for the subdivision of the Famennian. The upper part of the section was re-sampled for conodonts and geochemical analysis by Kaiser (2005). The geochemical and conodont data have been reported also in Kaiser et al. (2008, 2009). According to Perri & Spalletta (1998) and Kaiser et al. (2009) the conodont data from the Malpasso section are perfectly correlatable with the ammonoid data of Korn (1998). ). Hartenfels & Becker (2009) on the base of the identification of a typical UD V-A1 ammonoid assemblage, including Endosiphonites sp., Kosmoclymenia lamellosa (Wedekin), Nanoclymenia sp., Nodosoclymenia sp., Rectoclymenia cf. disciforme (Schindewolf), Rect. lineare (Münster), and Procymaclymenia pudica (Czarnocki), and the opportunistic bivalve of eutrophic facies Buchiola in bed ML6k, inferred the position of the Dasberg Crisis Interval between bed ML6k and ML7. The Malpasso section is one of the reference sections of the Pal Grande Formation, showing the typical features of the formation constituted mainly of grey mudstone and wackestone here particularly rich in ammonoids (Spalletta et al., 2015)
The Annulata Event at the Pramosio Bassa section.
Full text linkThe Pramosio area was studied by Michele Gortani since the beginning of the 20th century. The Pramosio Bassa section was briefly described by Perri et al. (1998) and Spalletta & Perri (2001). Mossoni (2014) studied magnetic susceptibility, magnetic hysteresis and major elements content of the section. The results of this study fit very well with the palaegeographic position of the Carnic microplate during the Late Devonian hypothesized by Schönlaub (1993) and von Raumer & Stampfli (2008). According to these Authors the Carnic microplate was located far away from land. Mossoni (2014) demonstrated that during the limestone deposition the detrital input was scarce, this is consistent also with the transgressive event considered as triggering cause of the Annulata radiation. All the studied parameters show values consistent with the identification of the Upper Annulata Event in correspondence of the level of sample PB5a (Mossoni 2014). In the Carnic basin a general transgressive tendency from the Lower marginifera Zone to the base of the Lower postera Zone (Palmatolepis marginifera marginifera–Polygnathus styriacus zones of Spalletta et al. 2017) was inferred by Perri & Spalletta (2000) based on conodont biofacies analysis. Hartenfels & Becker (2016) report that the level yielding a mass occurrence of Prionoceras (bed of sample PB5a) can be considered as an equivalent of the Wagnerbank of Thuringia. According to Hartenfels & Becker (2016) the goniatite-rich limestone of the Wagnerbank represents a regressive phase in the highest part of the annulata Zone (UD IV-A)
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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