1,721,453 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
“ Efecto de la concentración de nisina sobre el crecimiento de Listeria monocytogenes ATCC 19114 en carne de res cruda ”
No full textEl objetivo de la presente investigación fue evaluar el efecto de la concentración de nisina sobre el crecimiento de Listeria monocytogenes ATCC 19114 en carne de res cruda. Se tomó 50 g de carne de res cruda y fueron tratadas con 500 UI/g, 1000 UI/g y 1500 UI/g de nisna, luego fueron inoculadas con 103 ufc/g de L. monocytogenes ATCC 19114 y se incubaron a 4 °C por 5 días y a 37 °C por 36 horas._x000D_
Posteriormente se tomaron alícuotas de 10 g y se procedió a realizar el conteo en agar Oxford Suplementado luego de 48 horas de incubación a 35 °C._x000D_
El crecimiento de L. monocytogenes en los grupos tratados con 1000 UI/g y 1500 UI/g fue significativamente inhibido (P <0.05) en comparación con el grupo control. El grado de inhibición aumentó con el aumento de la concentración de nisina y la disminución de la temperatura de incubación.Tesi
Variations on the Author
Get PDF“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
Get PDFWe 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
Comparative Application of Different Strategies of Bacteriocins Produced by Carnobacterium maltaromaticium MMF-32 for Inhibition of Listeria monocytogenes ATCC 19114 in Cold-Smoked Haddock
Get PDFCold-smoked haddock fillets (undyed) treated with bacteriocin producing C. maltaromaticum MMF-32, C. piscicola A9b bac? (a non-producer of bacteriocin) and supernatant, supernatant concentrated with (NH4)2SO4 and semi-purified bacteriocin of C. maltaromaticum MMF-32 were challenged with L. monocytogenes ATCC 19114 (up to 2.2 x 103 CFU g-1). Following treatment, samples were kept at 4 °C for 10 days.L. monocytogenes ATCC 19114, total bacterial and carnobacterium counts were determined along with changes in total volatile base nitrogen (TVBN) and biogenic amine production as well as texture, color and odor. The anti-listerial effect of C. maltaromaticum MMF-32 and C. piscicola A9b bac? did not work on the cold smoked haddock, this is because there were few Carnobacterium cells in the samples that were inoculated with 4 x 106 CFU g?1, than the control i.e untreated fish samples and sample having only L. monocytogenes ATCC 19114. C. maltaromaticum MMF-32 did not show any spoiling capacity from the odour. All treated samples produced cadavarine. There is marked spoilage odour observed in samples treated with MRS supernatant and ammonium sulphate precipitated supernatant. During the period of storage, TVB-N treated samples exceeded the limit of 35 mg N 100 g-1. The use of bacteriocins for inactivation of listeria cells, semi-purified bacteriocin showed a statistically significant reduction in L. monocytogenes ATCC 19114 growth on day 7. Although the study on anti-listerial effects of C. maltaromaticum MMF-32 was not successful, this organism did have a positive effect on retention of firmness and sensory perception in cold smoked haddock
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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