1,721,731 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
Triggers and streams for calibration in CMS
No full textSustained operation of the CMS experiment requires feeding the calibration workflows with precisely the information that is needed for optimal determination of the constants. Beyond the regular data streams used for physics analysis, the CMS experiment maintains various data streams that are dedicated for calibration purposes. This includes streams collecting data produced by hardware calibration systems. Some calibrations requiring particularly high events rates are driven by special data streams that select the relevant event fractions already at the HLT level, for example pi0 and eta candidates for the intercalibration of the electromagnetic calorimeter. A dedicated express stream drives very low latency workflows that are operated at the CERN Analysis Facility. In many cases, dedicated triggers are essential to select the appropriate event types and build the corresponding streams. Experience from operating this system during the ramp-up of LHC luminosity in spring 2010 is presented
Electron and photon measurement with the CMS detector
No full textElectrons and Photons play a crucial role at LHC in several fields. They are essential in at least two of the Higgs decay channels, they can be signatures of the decay of new heavy bosons, they play a role in supersymmetry and are of course central in the reconstruction of electroweak and QCD processes. Clean identification and excellent energy and momentum resolution where given high priority in the design of the CMS detector. The instrument, featuring a finely grained, high-resolution electromagnetic calorimeter and excellent tracking performances, is well equipped for the task of measuring these particles with high precision. In this contribution we will describe the CMS electron and photon identification and reconstruction capabilities
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
Calibration of the Electromagnetic Calorimeter of the CMS experiment
No full textThe electromagnetic calorimeter (ECAL) of the CMS experiment is an homogeneous, hermetic detector with high granularity. Its potential performances are outstanding in terms of energy resolution, dynamic range and noise level. These characteristics make the calorimeter the most powerful device in the search of the decay in two photons of the Higgs particle. However, the energy resolution depends crucially on the channel to channel intercalibration precision. Therefore, great attention must be given to the calibration process. In this contribution we will describe the strategy that the ECAL group has devised to calibrate the detector. We will report on the pre-calibration processes that have already been performed, the strategies for intercalibration at startup and those foreseen when sufficient statistics will be accumulated to use W and Z events. For the normal data taking regime, an intercalibration precision of 0.5\% should be reached, while the response of the detector will be monitored regularly
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