1,721,532 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
Study of charged pion, kaon, and (anti)proton production at high transverse momenta in pp and p--Pb collisions with the ALICE experiment at the CERN LHC
Full text linkThe wealth of data collected by the CERN LHC during Run 1 (2009–2013) data taking period, and the unprecedented center-of-mass () energies reached during Run 2 (2015–2018) made it possible to study identified hadron production in new kinematic regimes. Measuring identified particle production over wide kinematic ranges is considered an informative probe of strong interactions at high energies. This Ph.D. thesis mainly focuses on the measurements of single-inclusive particle transverse momentum () spectra of charged pions (), kaons (K), and (anti)protons (p()) up to = 20GeV/. Particle production is studied at mid-rapidity in minimum bias inelastic proton-proton(pp) collisions as a function of and in non-single diffractive (NSD) proton-lead (p–Pb) collisions as a function of event charged-particle multiplicity measured at forward rapidity using the ALICE detector at the CERN LHC. The increase of reached at the LHC opens up domains in Bjorken- where the contribution of gluons to inclusive hadron production becomes dominant. Therefore,identified particle spectra at the top LHC energy in pp collisions provide new constraints on gluon fragmentation in theoretical calculations and gives input to tune the modeling of several contributions in state-of-the-art Monte Carlo (MC) event generators. Also, in this kinematic regime, the nuclear modification to hadronic structure is expected to be sizable. By using a proton instead of a heavy nucleus as a projectile, measurements of p–Pb collisions have unique sensitivity to the initial-state nuclear wave function. High- identified particle spectra measured in p–Pb collisions provide new constraints on the nuclear-modified parton distribution functions (nPDFs) and the flavor dependence of sea-quark nPDFs, which are key inputs in interpreting a large amount of experimental data like deuterium-gold and deep inelastic scattering
Nuclear modification factor of charged particles and light-flavour hadrons in p--Pb collisions measured by ALICE
No full textThe hot and dense strongly interacting Quark-Gluon Plasma (sQGP) created in ultra-relativistic heavy-ion collisions can be probed by studying high- particle production and parton energy loss. Similar measurements performed in p-Pb collisions may help in determining whether initial or final state nuclear effects play a role in the observed suppression of hadron production at high- in Pb--Pb collisions. By examining the nuclear modification factors through the comparison of identified hadron yields in different collision systems one can gain insight into particle production mechanisms and nuclear effects.The hot and dense strongly interacting Quark-Gluon Plasma (sQGP) created in ultra-relativistic heavy-ion collisions can be probed by studying high- particle production and parton energy loss. Similar measurements performed in p-Pb collisions may help in determining whether initial or final state nuclear effects play a role in the observed suppression of hadron production at high- in Pb--Pb collisions. By examining the nuclear modification factors through the comparison of identified hadron yields in different collision systems one can gain insight into particle production mechanisms and nuclear effects
Particle production as a function of charged-particle flattenicity in small collision systems with ALICE
No full textEvent classifiers based on charged-particle multiplicity have been extensively used in pp collisions at the LHC. However, a drawback of the multiplicity-based event classifiers is that selected samples at high charged-particle multiplicity are biased towards hard processes. These biases blur the effects of multi-parton interactions (MPI) and make it difficult to pinpoint the origins of fluid-like effects in small systems.This proceedings contribution exploits a new event classifier, the charged-particle flattenicity, defined in ALICE using the charged-particle multiplicity estimated in the intervals and . Final results on the production of identified and unidentified charged particles as a function of flattenicity in pp collisions at are discussed. It is shown how flattenicity can be used to select events in a way that is more sensitive to MPI. All the results are compared with predictions from QCD-inspired Monte Carlo event generators
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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