1,721,352 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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Measurements Of Jet Properties In Small Collision Systems At LHC With ALICE
No full textHeavy-ion collisions at ultra-relativistic energies produce a deconfined state of partonic matter, known as quark-gluon plasma (QGP). Small collision systems, previously thought not to form QGP, show collectivity at the LHC energies, challenging the conventional notion, albeit no observation of jet production suppression, a prominent signature of QGP formation. Study of internal jet properties and their multiplicity dependence in small collision systems, i.e., proton-proton (pp) and proton-lead (p-Pb) collisions, presents a promising approach, given their sensitivity to both the perturbative and non-perturbative aspects of quantum chromodynamics. This thesis reports the measurements of jet properties, including mean number of charged-particle multiplicity within jets and jet fragmentation function in minimum bias pp and minimum bias and central p-Pb collisions at the nucleon-nucleon center-of-mass energy of 5.02 TeV using the ALICE experiment at CERN, for charged-particle leading jets in the transverse momentum () interval of 20-100 GeV/c. Jets are reconstructed from charged particles at mid-rapidity using the sequential recombination anti- algorithm with jet resolution parameter = 0.4. The corrected distributions (corrected for instrumental effects and underlying events) are presented in comparison to various theoretical MC model predictions. Jet -dependent modifications of jet fragmentation are observed between minimum bias p-Pb and pp collisions and between central and minimum bias p-Pb collisions, marking the first experimental observation of jet modification in p-Pb collisions at LHC energies. Surprisingly, MC models without implementation of QGP-medium effects, are also found to qualitatively reproduce the features of jet modification observed in data. This thesis also presents the study of internal jet properties, including jet shape and fragmentation function in minimum bias and high-multiplicity pp collisions at the center-of-mass energy of 13 TeV using PYTHIA 8 Monte Carlo event generator. The study is performed in presence and absence of multiparton interactions and color reconnection mechanisms of PYTHIA. Significant jet modification is observed in high-multiplicity events compared to minimum bias ones for low- jets. The main sources contributing to the observed jet modification are found to be multiparton interactions, color reconnection and increase in the fraction of gluon-initiated jets in high-multiplicity events
Multiplicity dependence of intra-jet properties in small collision systems with ALICE
No full textMeasurements of jet fragmentation and jet properties in pp collisions provide a test of perturbative quantum chromodynamics (pQCD) and form a baseline for similar measurements in heavy ion (AA) collisions. In addition, jet measurements in pA collisions are sensitive to cold nuclear matter effects. Recent studies of high-multiplicity final states of small collision systems exhibit signatures of collective effects that could be associated with hot and dense, color-deconfined QCD matter, which is known to be formed in collisions of heavier nuclei. The modification of the jet fragmentation pattern and jet properties is expected in the presence of such QCD matter. Measurements of jet fragmentation patterns and other jet properties in pA collisions are needed in order to establish whether deconfined QCD matter is indeed generated in such small systems. In this contribution, we present measurements of intra-jet properties for leading charged-particle jets in minimum bias p-Pb collisions at = 5.02 TeV and in minimum bias and high multiplicity pp collisions at = 13 TeV. Results are compared with theoretical model predictions
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