1,721,248 research outputs found
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
Virus de l’encéphalite à tiques et fromages au lait cru de chèvres : une approche One Health pour une meilleure prévention du risque
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Virus de l’encéphalite à tiques en France : risque de transmission par voie alimentaire
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Microfluidic digital RT-qPCR *
No full textEngineering schoolDetection of intact viral particles, different approaches assessed:Measure of oxidative damages on viral particles by labelling with a biotin hydrazide (Sano, 2010) Approaches combined with the detection of viral RNA by RT-qPCR Enzymatic treatment (RNase) and/or use of molecules (monoazides, Platinium) (Randazzo, 2016; Prevost, 2013; Moreno, 2015; Coudray-Meunier, 2013) Capture of viral particles (magnetic beads, mucin) (Li, 2011; Afolayan, 2016) Cell culture is the Gold standard method Unfortunately, most of viruses are hardly or not at all cultivable Alternative methods developed until the availability of cell culture models Binding-RT-qPCR assay & hNoV detection (1) Farkas et al., 2018 Ex. Use for detecting hNoV in wastewater and surface water Assess the fate, spatial and temporal distribution of NoV up to sediment & shellfish samples derived from areas affected by wastewater contamination RNA NoV still detected by PGM-RT-qPCR: Infectious risk for shellfish ? NoV capsid integrity assay based on affinity binding between a protein and the viral capsid Porcine gastric mucin (PGM)-conjugated magnetic beads (MB) PGM contains multiple HBGA (Human histo-blood group antigens) (type A, H1 & Lewis b antigens), natural ligands for multiple NoV particles (Cheetham et al., 2007; Tian et al., 2005) Moreno et al., 2015 Implementation of the PMA-triton-RT-qPCR assay for detecting HAV in different types of food Pre-treatment (PMA-triton) partially efficient in reducing the RT-qPCR signal between 0.5 and 2 logs RT-qPCR signal completely eliminated in PMA-0.5%Triton treated concentrates corresponding to parsley inoculated at 6×10 2 TCID50</div
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