1,724,078 research outputs found
Further Thoughts on CIL IV, 5296 – CLE 950: Textual Problems, Structure, and Gender Issues
No full textAs the author has argued in a previous paper, CIL IV, 5296 is only the rather clumsy and partial transcription of a poem that has not been composed by the graffito writer himself; its author – very likely a woman – was working with a rather good knowledge of the Latin literary culture. Expanding on these conclusions, this study analyzes some textual and prosodic problems; provides some insight on the compositional technique and structure of the short poem; highlights the interest but also the uncertainties of the gender issues raised by the text
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
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
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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Benchmark Sketch of Texas State Aquarium, Station Number: 877-5296, Date: 06/27/1990.
Get PDFBenchmark Sketch of Texas State Aquarium, Station Number: 877-5296, drawn by Elisandro Leos. Date: 06/27/1990.US Army Corps of Engineers (USACE), Texas General Land Office (GLO), Texas Water Development Board (TWDB) and in collaboration and following the standards of the National Oceanic and Atmospheric Administration (NOA
STUDIO DELLA REAZIONE DI CICLOADDIZIONE AZIDE-ALCHINO CATALIZZATA DA RAME(I) IN LIQUIDI IONICI
No full textThe copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction constitutes
a substantial improvement of the classical Huisgen-type thermal 1,3-dipolar
cycloaddition. This reaction affords only 1,4-disubstituted triazole and it’s a powerful
ligation tool of the most disparate molecular fragments. While it is well known that the
CuAAC can be carried out in water, the use of ionic liquids (ILs) is another way to meet
the principles of green chemistry. ILs are special molten salts with low melting points
(<100 °C) and are typically constituted of organic cations (pyrrolidinium, pyridinium,
tetralkylammonium and tetralkylphosphonium ions) and inorganic anions. We selected
the unreported coupling of ethynyl C-galactoside with methyl 6-azido-glucopyranoside
to give the triazole-linked disaccharide: three types of ILs as solvents were considered
by cation variation, structural diversity was also introduced by the anion change. The
cycloaddition was performed overnight in the presence of CuI and i-Pr2EtN using the
ionic liquids as the solvents. A yield of 91% comparable to that in toluene (96%) was
obtained in the N-octyl dabco-cation based dicyanamide ([C8dabco][N(CN)2]. The
recycling of this IL was considered: the yields in four subsequent runs were almost
identical.
Moreover, ILs have been proved to be good microwave absorbers and are well
suited in reactions using microwave (MW) dielectric heating. So we focused on the
multiple glycosylation of a calixarene to give structurally defined glycoclusters. We
studied in some details the model click reaction of ethynyl C-galactoside with a tetraazido-
calixarene. The reaction was performed in three different ILs and carried out by
thermal heating (oil bath for 16 h) and MW dipolar heating (for 2 h). The most
performing IL was N-octyl dabco-cation based dicyanamide ([C8dabco][N(CN)2]. The
optimized conditions in [C8dabco][N(CN)2] were employed to perform the reaction of
monosaccharidic and disaccharidic alkynes.
In addition we focused on the copper(I)-catalyzed azide-alkyne cycloaddition
under base-free conditions. The model reaction carried out in a range of basic ILs turned
out to afford mixtures of 1,4- and 1,5-disubstituted triazoles with the exception of the
non-basic tetraalkyl ammonium salt Ammoeng 110. In this solvent, the CuI-catalyzed
cycloaddition in the absence of i-Pr2EtN afforded the 1,4-disubstituted sugar triazole as
main product and in fair yield. Then we demonstrated that CuI-catalyzed reactions of
structurally different azides and alkynes occur readily in the densely oxygenated nonbasic
ionic liquid Ammoeng 100 by MW dielectric heating and in the absence of any
added amine, to give exclusively 1,4-disubstituted triazole derivatives in high yields
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