1,720,982 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
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
Matériaux fonctionnels à base de nanocellulose pour la purification de l'eau et l’atténuation des micro-ondes
No full textAfter agriculture, the textile dyeing and finishing industry has generated a large water pollution problem as most of the chemicals coming from these industries are highly toxic and directly or indirectly affect human health. Another important issue is the Electro Magnetic (EM) pollution which deteriorates the performance and life of electronic gadgets and also adversely affects the human health. In this context, cellulose nanomaterial’s inherent fibrous nature and remarkable mechanical properties combined with low cost, biocompatibility and sustainable source, suggest huge potential as a component in water filtration membranes and green microwave attenuators in future. The main objective of this thesis is to fabricate cellulose nanofibers based functional constructs for clean water and microwave suppression. The presented unique method to produce novel absorbent material from cellulose nanofibers via non-solvent assisted method using Meldrum’s acid as an esterification agent for absorption of toxic dyes from water has not been addressed till date. This finding offers a new platform for the surface treatment of cellulose nanofibers using solvent free green technology. Conventionally, metals were used to shield EM waves but are highly undesirable due to their inherent drawbacks such as higher weights, corrosive nature and difficulty of processing into intricate shapes. Conductive cellulose nanopapers can offer a potential green feasible solution to this problem. The presented conductive cellulose nanopapers with an effective total shielding effectiveness of > 20 B will be a promising candidate for commercial device applications and will be an effective platform for developing eco-friendly green based attenuators.Après l'agriculture, l'industrie textile a engendré un important problème de pollution de l'eau car la plupart des produits chimiques provenant de ces industries sont hautement toxiques et affectent directement ou indirectement la santé humaine. La pollution électromagnétique (EM) est un autre problème important qui détériore les performances et la durée de vie des objets électroniques et nuit également à la santé humaine. Dans ce contexte, la nature fibreuse inhérente des nanomatériaux cellulosiques et leurs propriétés mécaniques remarquables, associées à une biocompatibilité et à une ressource durable, offrent un potentiel énorme en tant que composant dans les membranes de filtration de l'eau et les atténuateurs de micro-ondes verts. L'objectif principal de cette thèse est de fabriquer des objets fonctionnels à base de nanofibres de cellulose pour la filtration de l'eau et la suppression des micro-ondes. La méthode présentée dans ce manuscrit décrit un nouveau matériau absorbant à partir de nanofibres de cellulose par l'intermédiaire d'une méthode non solvatée utilisant l'acide de Meldrum comme agent d'estérification pour l'absorption de colorants toxiques. Cette innovation offre une nouvelle plate-forme pour le traitement de surface des nanofibres de cellulose utilisant une technologie verte sans solvant. Classiquement, les métaux ont été utilisés pour protéger les ondes électromagnétiques, mais sont fortement indésirables en raison de leurs inconvénients tels que des poids plus élevés, une nature corrosive et une difficulté de traitement en formes complexes. Les nano- papiers, à base de cellulose conductrice, peuvent offrir une solution verte à ce problème. La cellulose rendue conductrice présente une efficacité de blindage totale de plus de 20 B. Il s’agit d’une plate-forme efficace pour développer des atténuateurs verts respectueux de l'environnement
Matériaux fonctionnels à base de nanocellulose pour la purification de l'eau et l’atténuation des micro-ondes
No full textAfter agriculture, the textile dyeing and finishing industry has generated a large water pollution problem as most of the chemicals coming from these industries are highly toxic and directly or indirectly affect human health. Another important issue is the Electro Magnetic (EM) pollution which deteriorates the performance and life of electronic gadgets and also adversely affects the human health. In this context, cellulose nanomaterial’s inherent fibrous nature and remarkable mechanical properties combined with low cost, biocompatibility and sustainable source, suggest huge potential as a component in water filtration membranes and green microwave attenuators in future. The main objective of this thesis is to fabricate cellulose nanofibers based functional constructs for clean water and microwave suppression. The presented unique method to produce novel absorbent material from cellulose nanofibers via non-solvent assisted method using Meldrum’s acid as an esterification agent for absorption of toxic dyes from water has not been addressed till date. This finding offers a new platform for the surface treatment of cellulose nanofibers using solvent free green technology. Conventionally, metals were used to shield EM waves but are highly undesirable due to their inherent drawbacks such as higher weights, corrosive nature and difficulty of processing into intricate shapes. Conductive cellulose nanopapers can offer a potential green feasible solution to this problem. The presented conductive cellulose nanopapers with an effective total shielding effectiveness of > 20 B will be a promising candidate for commercial device applications and will be an effective platform for developing eco-friendly green based attenuators.Après l'agriculture, l'industrie textile a engendré un important problème de pollution de l'eau car la plupart des produits chimiques provenant de ces industries sont hautement toxiques et affectent directement ou indirectement la santé humaine. La pollution électromagnétique (EM) est un autre problème important qui détériore les performances et la durée de vie des objets électroniques et nuit également à la santé humaine. Dans ce contexte, la nature fibreuse inhérente des nanomatériaux cellulosiques et leurs propriétés mécaniques remarquables, associées à une biocompatibilité et à une ressource durable, offrent un potentiel énorme en tant que composant dans les membranes de filtration de l'eau et les atténuateurs de micro-ondes verts. L'objectif principal de cette thèse est de fabriquer des objets fonctionnels à base de nanofibres de cellulose pour la filtration de l'eau et la suppression des micro-ondes. La méthode présentée dans ce manuscrit décrit un nouveau matériau absorbant à partir de nanofibres de cellulose par l'intermédiaire d'une méthode non solvatée utilisant l'acide de Meldrum comme agent d'estérification pour l'absorption de colorants toxiques. Cette innovation offre une nouvelle plate-forme pour le traitement de surface des nanofibres de cellulose utilisant une technologie verte sans solvant. Classiquement, les métaux ont été utilisés pour protéger les ondes électromagnétiques, mais sont fortement indésirables en raison de leurs inconvénients tels que des poids plus élevés, une nature corrosive et une difficulté de traitement en formes complexes. Les nano- papiers, à base de cellulose conductrice, peuvent offrir une solution verte à ce problème. La cellulose rendue conductrice présente une efficacité de blindage totale de plus de 20 B. Il s’agit d’une plate-forme efficace pour développer des atténuateurs verts respectueux de l'environnement
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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