1,720,979 research outputs found
Decolorization of Suncion Red P-2B Solution by Gamma Co-60 Irradiation in the Presence of Hydrogen Peroxide
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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
Prediction the Compaction Properties of Lateritic Soils by Hybrid ANFIS Methods
No full textEmpirically, soil compaction is an important aspect in the selection of materials for earth constructions. Due to time constraints and attention to completion resources, it is necessary to develop models to forecast compaction parameters (maximum dry unit weight (γdmax) and optimum moisture content (ωopt) from easily measured index properties. The main purpose of this study is to scrutinize the applicability of using the hybrid adaptive neuro-fuzzy inference system (ANFIS) models for predicting the γdmax and ωopt related to the standard proctor compaction test of lateritic soils. Results present that both models have a reasonable performance in predicting the γdmax and ωopt with R2 larger than 0.9038 and 0.9692 for the training data, representing the acceptable correlation between measured and forecasted γdmax and ωopt. Regarding developed models, the ANFIS model optimized with whale optimization algorithm (WOA) has the best performance than imperialist competitive algorithm (ICA) model in both training and testing phases for predicting γdmax and ωopt
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
Process Optimization and Environmental Analysis of Ultrasound-Assisted Biodiesel Production from <i>Pangasius</i> Fat Using CoFe<sub>2</sub>O<sub>4</sub> Catalyst
No full textThis study optimized
biodiesel synthesis from Pangasius
fat using
a Box-Behnken experimental design. The manipulation of key variables
included the CoFe2O4 catalyst dosage, the methanol-to-fat
molar ratio, and the ultrasonic wave amplitude. We determined optimal
conditions for biodiesel synthesis through the central runs, resulting
in a remarkable 96.5% yield. The produced biodiesel exhibited diverse
fatty acid compositions and met specifications for viscosity, specific
gravity, acid value, and iodine value. Furthermore, we conducted a
comprehensive life cycle assessment (LCA) to shed light on the environmental
implications of the process. The LCA revealed a minimal global warming
potential of 0.21 kg CO2 per kg of biodiesel produced,
demonstrating the environmental viability of the entire process. These
significant findings highlight the promising potential of using Pangasius fat as a sustainable feedstock for biodiesel
production. Additionally, they provide valuable insights into developing
ecologically friendly energy sources
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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