1,720,957 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
Measurement of the top-quark mass with the ATLAS detector using events with a high transverse momentum top quark
No full textThis presents a recent ATLAS Collaboration measurement of the top-quark mass using top-antitop-quark pair events with a high transverse momentum top quark at the LHC. The analysis targets the lepton-plus-jets channel, where the hadronically decaying top quark is reconstructed as a single large-radius jet. A profile likelihood fit extracts the mass using one observable sensitive to the top-quark mass and two others to reduce systematic uncertainties. The result, , is the most precise ATLAS top-quark mass measurement from a single channel to date
Measurement of the top quark mass with the ATLAS detector using events with a high transverse momentum top quark
No full textThe mass of the top quark is determined using top-antitop-quark pair events where the top quarks have high transverse momentum. The analysis is based on data collected with the ATLAS detector from proton-proton collisions at TeV at the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb. It focuses on events in the lepton-plus-jets decay channel, where one top quark decays semi-leptonically, producing an electron or muon, while the other decays hadronically, generating a highly energetic large-radius jet. The mean invariant mass of the reconstructed large-radius jet provides sensitivity to the top quark mass and is simultaneously fitted alongside two additional observables to mitigate systematic uncertainties. The measured top quark mass is GeV, representing the most precise ATLAS measurement from a single channel
Measurement of the top-quark mass with the ATLAS detector using tt¯events with a boosted top quark
Get PDFAs the heaviest fundamental particle observed to date, the top quark plays a crucial role in particle physics. Precise determination of its mass is essential for testing the internal consistency of the Standard Model and probing potential new physics. This thesis presents a
measurement of the top-quark mass using the full Run 2 dataset, corresponding to an integrated luminosity of 140 fb−1, collected during proton-proton collisions at a centre-of-mass energy of √s = 13 TeV by the ATLAS experiment at the Large Hadron Collider between 2015 and 2018. The analysis focuses on top-antitop-quark pair decays that produce a highly energetic top quark, reconstructed using a single large-radius jet. The average invariant mass of this jet is used to extract the top-quark mass using a profile likelihood fit, incorporating two additional observables to constrain and reduce systematic uncertainties. This approach yields the most precise top-quark mass measurement by ATLAS in a single channel to date: 172.95 ± 0.53 GeV. In addition, this thesis presents the development and integration of the Fast Track Finder algorithm into the ATLAS trigger system. This represents the first successful implementation of a CPU-based charged-particle track reconstruction chain within the ATLAS trigger that is intended for use during the operation of the High-Luminosity Large Hadron Collider, which is scheduled to commence in 2030
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
- …
