1,720,962 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
Correction to: Multi-scale minero-chemical analysis of biomass ashes: A key to evaluating their dangers vs. benefits (Sustainability 2021, 13, 6052)
No full textThe authors would like to make the following corrections to the published paper [1]. The changes are as follows: (1) Replacing the heading of “Section 2.2.5.” on page 3: “EMPA Analysis” with “EMPA and LA-ICP-MS Analyses” (2) The authors wish to add an explanation along with a reference in “Section 2.2.5.” on page 4. Replacing the original version: The glass pellets obtained after the quenching were embedded with epoxy resin; the mounts were cut, ground, and highly polished down to a 1 μm grade diamond polishing paste. with The glass pellets obtained after the quenching were embedded with epoxy resin; the mounts were cut, ground, and highly polished down to a 1 μm grade diamond polishing paste. Minor and trace elements were analysed at the Department of Physics and Geology (Perugia University) by LA-ICP-MS using the analytical protocol reported in Ref. [25]. Adding a reference into the citation list: 25. Petrelli, M.; Morgavi, D.; Vetere, F.; Perugini, D. Elemental Imaging and Petro-Volcanological Applications of an Improved Laser Ablation Inductively Coupled Quadrupole Plasma Mass Spectrometry. Period. Mineral. 2016, doi:10.2451/2015PM0465. (3) Replacing the caption of Table 4 on page 11: Table 4. Minor elements (ppm), measured with EMPA, in the four samples (2, 3, 4, and 5). with Table 4. Minor elements (ppm) measured with LA-ICP-MS in the four samples (2, 3, 4, and 5)
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
Optimization of enzymatic hydrolysis of cellulosic fraction obtained from stranded driftwood feedstocks for lipid production by Solicoccozyma terricola
No full textStranded driftwood feedstocks may represent, after pretreatment with steam explosion and enzymatic hydrolysis, a cheap C-source for producing biochemicals and biofuels using oleaginous yeasts. The hydrolysis was optimized using a response surface methodology (RSM). The solid loading (SL) and the dosage of enzyme cocktail (ED) were variated following a central composite design (CCD) aimed at optimizing the conversion of carbohydrates into lipids (YL) by the yeast Solicoccozyma terricola DBVPG 5870. A second-order polynomial equation was computed for describing the effect of ED and SL on YL. The best combination (ED = 3.10%; SL = 22.07%) for releasing the optimal concentration of carbohydrates which gave the highest predicted YL (27.32%) was then validated by a new hydrolysis. The resulting value of YL (25.26%) was close to the theoretical maximum value. Interestingly, fatty acid profile achieved under the optimized conditions was similar to that reported for palm oil
Natural, bio-based, colored linoleum: Design, preparation, characteristics and preliminary life cycle assessment
No full textBio-based construction elements and materials are undergoing a wide diffusion due to the growing attention for limiting the environmental impact of the construction sector nowadays. Following this trend towards increased sustainability in buildings and their components, here a novel bio-based linoleum, colored by means of bio-based pigments is investigated. The linoleum design and development are presented, and the different samples are characterized with respect to optics, thermal and acoustic properties. Moreover, a life cycle assessment (LCA) is carried out to assess the impact of the material on environment and human health. Possible applications are then discussed. Findings demonstrate that the natural pigments are able to effectively color the linoleum. Solar reflectance of the samples falls between 28.8% and 42.7%, while thermal conductivity varies between 0.28 and 0.37 W/mK and acoustic absorption coefficient is around 0.5 and varies the peak frequencies with respect to the thickness of the air layer behind the sample. Finally, the investigated sample of natural pigment reduces the impact categories on the environment by up to 94.1% through its life cycle, with respect to same-color synthetic pigments
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
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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