1,721,003 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
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
Associations between genetic obesity susceptibility and early postnatal fat and lean mass: an individual participant meta-analysis
No full textImportancePatterns of body size and body composition associated with genetic obesity susceptibility inform the mechanisms that increase obesity risk.ObjectiveTo test associations between genetic obesity susceptibility, represented by a combined obesity risk-allele score, and body size or body composition at birth to age 5 years.Design, Setting, and ParticipantsA total of 3031 children from 4 birth cohort studies in England, France, and Spain were included in a meta-analysis.ExposuresA combined obesity risk-allele score was calculated from genotypes at 16 variants identified by genome-wide association studies of adult body mass index (BMI).Main Outcomes and MeasuresOutcomes were age- and sex-adjusted SD scores (SDS) for weight, length/height, BMI, fat mass, lean mass, and percentage of body fat at birth as well as at ages 1, 2 to 3, and 4 to 5 years.ResultsThe obesity risk-allele score was not associated with infant size at birth; at age 1 year it was positively associated with weight (? [SE], 0.020 [0.008] SDS per allele; P?=?.009) and length (? [SE], 0.020 [0.008] SDS per allele; P?=?.01), but not with BMI (? [SE], 0.013 [0.008] SDS per allele; P?=?.11). At age 2 to 3 years these associations were stronger (weight: ? [SE], 0.033 [0.008] SDS per allele; P?<?.001; height: ? [SE], 0.025 [0.008] SDS per allele; P?<?.001) and were also seen for BMI (? [SE], 0.024 [0.008] SDS per allele; P?=?.003). The obesity risk-allele score was positively associated with both postnatal fat mass (1 year: ? [SE], 0.032?[0.017] SDS per allele; P?=?.05; 2-3 years: ? [SE], 0.049?[0.018] SDS per allele; P?=?.006; and 4-5 years: ? [SE], 0.028?[0.011] SDS per allele; P?=?.009) and postnatal lean mass (1 year: ? [SE], 0.038 [0.014] SDS per allele; P?=?.008; 2-3 years: ? [SE], 0.064 [0.017] SDS per allele; P?<?.001; and 4-5 years: ? [SE], 0.047 [0.011] SDS per allele; P?<?.001), but not with the percentage of body fat (P?>?.15 at all ages).Conclusions and RelevanceGenetic obesity susceptibility appears to promote a normally partitioned increase in early postnatal, but not prenatal, growth. These findings suggest that symmetrical rapid growth may identify infants with high life-long susceptibility for obesity
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
Implications of adopting the WHO 2006 child growth standards: a case study from urban South Africa, the Birth to Twenty cohort
No full textAuthor-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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