1,721,105 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
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
Search for exotic decays of the Higgs boson and additional scalar particles in ATLAS
No full textThe discovery of the Higgs boson with the mass of about 125 GeV completed the particle content predicted by the Standard Model. Even though this model is well established and consistent with many measurements, it is not capable to solely explain some observations. Many extensions of the Standard Model addressing such shortcomings introduce additional Higgs-like bosons which can be either neutral or charged. Exotic decays of the Higgs boson also provide a unique window for the discovery of new physics, as the Higgs boson may couple to hidden-sector states that do not interact under Standard Model gauge transformations. Also, models predicting exotic Higgs boson decays to pseudo-scalars can explain the g-2 and flavour-sector anomalies, and the galactic centre gamma-ray excess if the additional pseudo-scalar acts as the dark matter mediator. This talk presents recent searches for additional low- and high-mass Higgs bosons, as well as decays of the 125 GeV Higgs boson to new particles, using LHC collision data at 13 TeV collected by the ATLAS experiment in Run 2
Search For Exotic Decays of the 125 GeV Higgs Boson in the bb Final State With the ATLAS Detector
No full textExotic decays of the 125 GeV Higgs boson provide a unique window for the dis- covery of new physics, as the Higgs may couple to hidden-sector states that do not interact under Standard Model (SM) gauge transformations. Models predicting ex- otic Higgs decays to additional light bosons appear in many extensions to the SM and can explain several unknowns in high energy particle physics, such as the na- ture of dark matter and the existence of supersymmetry. In this Dissertation, a search for the exotic decay of the 125 GeV Higgs boson is performed using proton- proton collisions from the Large Hadron Collider at = 13 TeV with 36.1 fb of data collected by the ATLAS detector. In this search, we only consider the ex- otic decays to the final state H → bb. The experimental signature consists of two oppositely signed muons, two b-tagged jets, and a negligible amount of missing transverse energy. Further, the two b-jet and dimuon systems are required to have nearly equivalent masses and the four-object mass of these particles must be within 15 GeV of 125 GeV. These constraints are placed on the system via a kinematic like- lihood fit that adjusts the energy of the b-jets and assigns an event scores based on the compatibility of the hypothesis . The main background contributions come from the Standard Model Drell-Yan + jets production and decays with two muons; minor background contributions from W+jets, single-top, and + X processes are also considered. Monte Carlo simulation samples are used to estimate each background contributions, except for the Drell-Yan background, which is estimated using a data-driven template method. Experimental and theoretical uncertainties from a variety of sources are assessed for the signal and background estimations.As no significant excesses are found in the signal region selections, upper limits on the production cross-section times branching ratio which range from to in the a-boson mass range, GeV. Additional model-independent limits, where no signal model is considered, are set on the visible production cross-section times the branching ratio of a new physics particle X to the bb final state, , ranging from 0.1 fb to 0.73 fb in the dimuon mass range GeV. This analysis provides stringent limits on decays with comparable or greater sensitivity to other search channels performed on LHC data. Finally, we discuss the limiting factors of the 36.1 fb analysis and present new experimental avenues needed to establish a greater chance for discovery potential using the full LHC Run-2 dataset
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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