1,721,254 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
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
iPSC-Derived Pancreatic Progenitors Lacking FOXA2 Reveal Alterations in miRNA Expression Targeting Key Pancreatic Genes
No full textPoster by Noura Aldous, Ahmed Elsayed, Nehad Alajez, and Essam M. Abdelalim (Hamad Bin Khalifa University)
Background: Generation of pancreatic beta cells from human pluripotent stem cells (hPSCs) is a promising approach for studying diabetes pathogenesis and transplantation therapy. Our recent study showed that FOXA2 is crucial for human alpha and beta cell development during pancreatic islet differentiation. However, whether miRNAs are regulated by FOXA2 or not is largely unknown.
Objective: In this report, we aimed to capture the dysregulated miRNAs associated with the absence of FOXA2 and identify their pancreatic-specific target genes in the iPSC-derived pancreatic progenitors (iPSC-PPs).
Methods: Two different FOXA2 knockout (FOXA2–/–) hiPSC lines were generated using CRISPR/Cas9. FOXA2–/–hiPSCs and their isogenic controls were differentiated into PPs in vitro using our protocol. PPs generated from FOXA2–/–hiPSCs and WT controls were exposed to RNA-sequencing and miRNA-sequencing. Gene ontology (GO) and KEGG pathways analyses were performed on the differentially expressed genes (DEGs). For differentially expressed miRNAs, a fold-change of >2 with a P-value
Results: Transcriptome analysis on FOXA2–/–PPs compared to WT-PPs revealed 1628 down-regulated (Log2 FC 1.0, p 1.0, p
Conclusion: These findings indicate that the expression of FOXA2 during pancreatic islet development is crucial in maintaining the normal expression of the key miRNAs that target pancreatic endocrine TFs.</p
Data for: Does Bitcoin add value to global industry portfolios? _CRC2019
No full textSpillover Approach Cod
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
Estimation of Fetal Size and Weight using Various Formulas
No full textBirth weight is an important factor in delivery management. Antenatal ultrasound has turned out to be one of the clinicians most vital devices for surveying fetal age, growth and prosperity. Contrasted Physical examination of the pregnant uterus is the most precise strategy for evaluating fetal size and growth along with the utilization of ultrasound imaging and estimating of the different fetal parameters. Objective To evaluates the antenatal assessments of fetal weight in pregnancies by using Johnson's formula, Hadlock's formula and Ultrasonography. Comparison of these different methods with the actual birth weight of these babies after delivered. Material and methods Two hundred singleton term pregnancies within 48 hours were randomly selected to participate in this prospective cohort study. Variables included such as abdominal circumference, Biparietal diameter, and Femur length. Parameters to obtain estimated fetal weight Results The mean birth weight of Hadlock formula is closest to the mean of actual birth weight. In the study population, more primigravida delivered babies with very low birth weight and more multigravida delivered babies of birth weight 3500 gms. Johnson's and ultrasound Hadlock's formula had a marked tendency to overestimate the fetal weight. Error was within 350 Gms in 84.7 , 70.8 and 84 of cases by Dare's, Johnson's and ultrasound Hadlock's formula. Dr. Pushpamala Ramaiah | Dr. Lamiaa Ahmed Elsayed | Dr. Grace Lindsey | Dr. Ayman Johargy "Estimation of Fetal Size and Weight using Various Formulas" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23231.pd
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