1,720,986 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
Étude de la régulation de promoteurs inductibles par l’acide oléique chez la levure Yarrowia lipolytica dans un contexte de production de protéines recombinantes
No full textLes levures non conventionnelles, dont Yarrowia lipolytica, sont devenues desusines cellulaires attractives pour la production de protéines recombinantes. Lasélection de promoteurs régulés impliqués dans le métabolisme de substratshydrophobes est d'un grand intérêt pour une telle application. Dans ce cadre,l’objectif de ce projet est de mieux comprendre la régulation des promoteurs desgènes POX2 et LIP2 dans le but d’améliorer la production de protéinesrecombinantes chez Y. lipolytica.D’un point de vue biotechnologique, l'analyse à l’échelle cellulaire est devenueune approche répandue pour l’analyse et l’optimisation des bioprocédés. Ainsi,l'objectif de la première partie de ce projet vise le développement d’une méthoded’analyse en ligne des paramètres de culture Y. lipolytica dans un milieu contenantde l’acide oléique. Cette technique consiste au couplage d’un bioréacteur à uncytomètre en flux via une interface d’échantillonnage automatique. Cetteméthodologie a conduit principalement à une analyse rapide de la croissancecellulaire, de l'accumulation des lipides, du dimorphisme ainsi qu’à l'analyse duniveau d’induction des promoteurs chez Y. lipolytica.Les systèmes d’expression basés sur les promoteurs LIP2 et POX2 sont difficilesà manipuler, principalement en raison de l’utilisation de substrats insolubles dansl’eau (acide oléique) comme inducteur. Dans ce travail, il a été clairement démontréque pLIP2 est le promoteur de choix à utiliser pour développer un procédé deproduction de protéines recombinantes par culture de Y. lipolytica dans un milieucomplexe. De plus, l’utilisation d’un mélange acide oléique-glucose 60/40 (w/w) aconduit à une amélioration du niveau d’induction du promoteur LIP2 par un facteurde 10 par rapport à utilisation l'acide oléique. De plus, l’analyse à l’échelle cellulairemontre que ces deux substrats sont co-consommés par les cellules.Enfin, la dernière partie de cette thèse a eu pour but d'étudier la régulation dupromoteur LIP2 par rapport à la transition dimorphique. Nos résultats ont clairement montré que le changement morphologique chez Y. lipolytica n'a pas d'impact sur larégulation de pLIP2.L’ensemble de ces études a conduit à une meilleure compréhension de laphysiologie de Y. lipolytica, soulignant son potentiel avéré de production desprotéines recombinantes.Doctorat en Sciences agronomiques et ingénierie biologique (Sciences)info:eu-repo/semantics/nonPublishe
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
A rapid response vaccine manufacturing platform as a countermeasure to epidemic threats
Get PDFThe preparedness and rapid response to emerging infectious diseases outbreaks remains challenging due to limited market incentives. The development and manufacturing of vaccines are today facing bottlenecks in development time as well as in cost-effectiveness in order to be able to react rapidly and deliver low-cost, high-quality vaccines.
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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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