1,721,067 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
The SuperChooz Experiment: Unveiling the Opportunity
No full textA new Europe-based flagship neutrino experiment potential opens by exploiting a unique opportunity effectively hidden in the Chooz nuclear reactor site (France). The SuperChooz project’s birth is tied to the dismantling of the EDF Chooz-A nuclear reactor complex. Built around the 60s and unknown to most scientists, the Chooz-A site offers an underground volume of up to 50,000m3 available for neutrino fundamental science using the EDF Chooz-B two most powerful N4-EPR nuclear reactors located at about 1km away. The combination embodies the third generation of possible fundamental science at Chooz — Europe’s most renowned site for reactor neutrino research — while this time detectors may reach a scale comparable to the world's largest neutrino detector, such as the SuperKamiokande in Japan. The main experimental challenge is the site’s shallow overburden (~100m) demanding the use of the novel LiquidO technology (web: https://liquido.ijclab.in2p3.fr), originally pioneered around 2012 by the CNRS (France) and now led by the homonymous international consortium. The new detection methodology heralds the unprecedented active background rejection needed, including detection capabilities beyond reactor neutrinos only. Indeed, SuperChooz’s physics programme is designed to yield some of the world's most precise measurements that can additionally probe a few of the most insightful building-block symmetries of the Standard Model thus enabling unique discovery potential. SuperChooz programme also offers synergy potential allowing to boost the sensitivities of other world neutrinos flagship experiments, such as DUNE (US), JUNO (China) and HyperKamiokande (Japan). The potential exploitation of the Chooz-A site for fundamental science is in active discussion between CNRS and EDF since 2018, upon the completion of the Double Chooz experiment, whose results grant vast data-based knowledge for the accurate design of SuperChooz. The neutrino reactor-based first physics studies were released at the EPS-HEP-2019 conference (Ghent, Belgium). As of September 2022, CNRS and EDF signed the cooperation agreement officially starting the so-called SuperChooz Pathfinder era to address the project technical feasibility assessment by 2028. Moreover, the approved AntiMatter-OTech project, funded by the EU-EIC (France, Germany, Spain) and UKRI (UK), will address the specific LiquidO’s performance demonstration within the same time scale while establishing a new experiment in fundamental physics called νCLOUD at Chooz, including the direct participation of EDF in neutrino-based innovation for the first time. This seminar embodies the first release of the SuperChooz to the international community and will be followed by several publications. REGISTRATION ONLY IF A VISITOR CARD IS NEEDED</p
Systematic Comparison of the MINOS Near and Far Detector Readout Systems
Get PDFThe MINOS experiment is a neutrino oscillation baseline experiment intending to use high resolution L/E neutrinos to measure the atmospheric neutrino oscillations parameters to unprecedented precision. Two detectors have been built to realize the measurements, a Near detector, located about 1km downstream from the beam target at the Fermi Laboratory, and a Far detector, located at 736km, at the Soudan Laboratory. The technique relies on the Near detector to measure the un-oscillated neutrino spectrum, while the Far detector measures the neutrino spectrum once oscillated. The comparison between the two measurements is expected to allow MINOS to measure {Delta}m{sup 2} beyond 10% precision level. The Near and Far detectors have been built similarly to minimize possible systematic effects. Both detectors have been endowed with different readout systems, as the beam event rates are very different. The MINOS calibration detector (CalDet), installed at CERN, was instrumented with both readout systems such that they can simultaneously measure and characterize the energy deposition (response and event topology) of incident known particle from test-beams. This thesis presents the investigations to quantify the impact of the performance of both readout systems on the MINOS results using the measurements obtained with CalDet. The relative comparison of the responses of both readout systems have been measured to be consistent with being identical within a systematic uncertainty of 0.6%. The event topologies have been found to be negligibly affected. In addition, the performance of the detector simulations have been thoroughly investigated and validated to be in agreement with data within similar level of uncertainties
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
High Precision Calorimetry with Liquid Scintillator Detectors
No full textFirst presentation of the "Dual Calorimetry" concept being designed for JUNO (already internally approved) benefiting from pre-conception in the context of the Double Chooz experiment. Presentation done as first release of development for JUNO at the "Frontiers of Liquid Scintillator Technology" (2016) at FNAL (Chicago, USA
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
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