1,721,311 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
Occupational exposure to irritant agents and asthma : the role of biomarkers related to oxidative stress
No full textL’exposition professionnelle aux irritants est un des facteurs de risque de l’asthme. Cependant, les mécanismes biologiques par lesquels elle affecte la santé respiratoire restent mal connus. Le rôle de la voie biologique du stress oxydant a été suggéré.Les objectifs de la thèse sont d’étudier : 1) les associations entre des marqueurs biologiques liés au stress oxydant et l’exposition professionnelle aux irritants d’une part et l’asthme d’autre part; 2) les associations entre l’exposition professionnelle aux irritants et des endotypes d’asthme identifiés à partir de caractéristiques cliniques et biologiques; 3) les associations entre un grand nombre de gènes impliqués dans la voie métabolique du stress oxydant et les endotypes d’asthme et si ces associations étaient modifiées par l’exposition professionnelle aux irritants.L’ensemble de ces objectifs a été réalisé à partir des données des participants adultes de l’étude Épidémiologique des facteurs Génétiques et Environnementaux de l’Asthme (EGEA, n=1571).Parmi les marqueurs biologiques étudiés, les produits d’oxydation fluorescents (POFs), un marqueur de dommages liés au stress oxydant, étaient associés à une exposition professionnelle élevée aux irritants et à plusieurs caractéristiques de l’asthme telles que des crises d’asthme, un mauvais contrôle de l’asthme, une utilisation de traitements pour l’asthme, et un asthme neutrophilique. Une exposition professionnelle élevée aux irritants était associée à l’endotype d’asthme caractérisé par un asthme de l’adulte, une fonction ventilatoire basse, des symptômes respiratoires, une concentration élevée en POFs et un nombre élevé de neutrophiles. Cet endotype d’asthme était également associé au gène Phosphotyrosine Interaction Domain Containing 1 (PID1), et cette association était observée uniquement chez les participants non exposés aux irritants.En conclusion, cette thèse apporte de nouvelles connaissances sur le rôle du stress oxydant dans l’association entre exposition professionnelle aux irritants et santé respiratoire.Occupational exposure to irritant agents is one of the asthma risk factors. However, the biological mechanisms by which irritants affect respiratory health remain poorly understood. The role of oxidative stress pathway was suggested.The aims of the thesis are to study: 1) the associations between biomarkers related to oxidative stress and occupational exposure to irritants on the one hand, and to asthma on the other hand; 2) the associations between occupational exposure to irritants and asthma endotypes integrating clinical characteristics and biomarkers; 3) the associations between a large number of genes involved in oxidative stress pathway and asthma endotypes and whether these associations were modified by occupational exposure to irritants.Data from adult participants from the Epidemiologial study of Genetic and Environmental factors of Asthma (EGEA, n=1571) were used.Among the biomarkers studied, Fluorescent oxidative products (FlOPs), a biomarker of damages related to oxidative stress, were associated both with high level of occupational exposure to irritants and with several asthma characteristics such as asthma attacks, poor asthma control, use of treatments for asthma, and neutrophilic asthma. High level of occupational exposure to irritants was associated with an asthma endotype characterized by adult-onset asthma, respiratory symptoms, poor lung function, high level of FlOPs and neutrophils. This asthma endotype was also associated to Phosphotyrosine Interaction Domain Containing 1 (PID1) gene and this association was observed among unexposed participants only.In conclusion, this thesis brings new knowledge on the role of oxidative stress in the association between occupational exposure to irritants and respiratory health
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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