1,721,648 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
Calibration of the ATLAS Electromagnetic Calorimeter and Measurement of W Boson Properties at √s = 5 and 13 TeV with the ATLAS Detector at the LHC.
No full textCette thèse se compose de deux parties principales. La première partie correspond à un étalonnage in situ du calorimètre électromagnétique à l'aide d'électrons et de positrons provenant de désintégrations du boson Z sélectionnés parmi tous les échantillons de données nominaux prélevés par ATLAS lors du Run 2 entre 2015 et 2018, ainsi que des runs spéciaux, caractérisés par faible nombre d'interactions par croisement afin d'améliorer la résolution expérimentale de la mesure du recul des bosons Z et W et de la reconstruction des différentes variables cinématiques nécessaires à la détermination de la masse du boson W. Les échantillons de données nominaux ont été collectés à une énergie dans le centre de masse de 13 TeV correspondants à une luminosité intégrée d'environ 140 fb⁻ ᴵ, alors que les runs spéciaux ont été effectués à 5 et 13 TeV, correspondants à 258 pb⁻ ᴵ et 340 pb⁻ ᴵ, respectivement. La deuxième partie porte sur la mesure des propriétés du boson W à l'aide des données des runs spéciaux, y compris une mesure de l'impulsion transversale du boson W, des mesures des sections efficaces fiduciales, simple et double différentielles, et une évaluation préliminaire des incertitudes statistiques et systématiques expérimentales de la détermination de la masse do boson W.This thesis consists of two main parts. The first part corresponds to an in-situ calibration of the electromagnetic calorimeter using electrons and positrons from Z boson decays selected from all nominal data samples taken by ATLAS during Run 2 between 2015 and 2018, as well as special runs, characterised with low number of interactions per bunch crossing in order to improve the experimental resolution of the recoil measurement of Z and W bosons and of the reconstruction of various kinematic variables needed for the W boson mass determination. The nominal data samples were taken at a centre of mass energy of 13 TeV corresponding to an integrated luminosity of about 140 fb⁻ ᴵ, whereas the special runs were taken at 5 and 13 TeV, corresponding to 258 pb⁻ ᴵ and 340 pb⁻ ᴵ, respectively. The second part is on the measurement of W boson properties using data from the special runs, including a measurement of the transverse momentum of the W boson, a measurement of fiducial, single and double differential cross sections, and a preliminary evaluation of the statistical and experimental uncertainties of the W mass determination
Étalonnage du calorimètre électromagnétique ATLAS et mesure des propriétés du Boson W à √s = 5 et 13 TeV avec le détecteur ATLAS au LHC.
No full textThis thesis consists of two main parts. The first part corresponds to an in-situ calibration of the electromagnetic calorimeter using electrons and positrons from Z boson decays selected from all nominal data samples taken by ATLAS during Run 2 between 2015 and 2018, as well as special runs, characterised with low number of interactions per bunch crossing in order to improve the experimental resolution of the recoil measurement of Z and W bosons and of the reconstruction of various kinematic variables needed for the W boson mass determination. The nominal data samples were taken at a centre of mass energy of 13 TeV corresponding to an integrated luminosity of about 140 fb⁻ ᴵ, whereas the special runs were taken at 5 and 13 TeV, corresponding to 258 pb⁻ ᴵ and 340 pb⁻ ᴵ, respectively. The second part is on the measurement of W boson properties using data from the special runs, including a measurement of the transverse momentum of the W boson, a measurement of fiducial, single and double differential cross sections, and a preliminary evaluation of the statistical and experimental uncertainties of the W mass determination.Cette thèse se compose de deux parties principales. La première partie correspond à un étalonnage in situ du calorimètre électromagnétique à l'aide d'électrons et de positrons provenant de désintégrations du boson Z sélectionnés parmi tous les échantillons de données nominaux prélevés par ATLAS lors du Run 2 entre 2015 et 2018, ainsi que des runs spéciaux, caractérisés par faible nombre d'interactions par croisement afin d'améliorer la résolution expérimentale de la mesure du recul des bosons Z et W et de la reconstruction des différentes variables cinématiques nécessaires à la détermination de la masse du boson W. Les échantillons de données nominaux ont été collectés à une énergie dans le centre de masse de 13 TeV correspondants à une luminosité intégrée d'environ 140 fb⁻ ᴵ, alors que les runs spéciaux ont été effectués à 5 et 13 TeV, correspondants à 258 pb⁻ ᴵ et 340 pb⁻ ᴵ, respectivement. La deuxième partie porte sur la mesure des propriétés du boson W à l'aide des données des runs spéciaux, y compris une mesure de l'impulsion transversale du boson W, des mesures des sections efficaces fiduciales, simple et double différentielles, et une évaluation préliminaire des incertitudes statistiques et systématiques expérimentales de la détermination de la masse do boson W
Calibration of the ATLAS Electromagnetic Calorimeter and Measurement of Boson Properties at = 5 and 13 TeV with the ATLAS Detector at the LHC
No full textThis thesis consists of two main parts. The first part corresponds to an in-situ calibration of the electromagnetic calorimeter using electrons and positrons from boson decays selected from all nominal data samples taken by ATLAS during Run 2 between 2015 and 2018, as well as during special runs, characterised by a low number of interactions per bunch crossing in order to improve the experimental resolution of the recoil measurement of and bosons and of the reconstruction of various kinematic variables needed for the boson mass determination. The nominal data samples were taken at a center of mass energy of 13 TeV corresponding to an integrated luminosity of about 140 fb, whereas the special runs were taken at 5 and 13 TeV, corresponding to 258 pb and 340 pb, respectively. The second part is on the measurement of boson properties using data from the special runs, including a measurement of the transverse momentum of the boson, a measurement of fiducial, single and double differential cross sections, and a preliminary evaluation of the statistical and experimental uncertainties of the mass determination
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
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