705 research outputs found

    The EAGLES/ISLE initiative for setting standards: the Computational Lexicon Working Group for Multilingual Lexicons

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    ISLE (International Standards for Language Engineering), a transatlantic standards oriented initiative under the Human Language Technology (HLT) programme, is a continuation of the long standing EAGLES (Expert Advisory Group for Language Engineering Standards) initiative, carried out by European and American groups within the EU-US International Research Co-operation, supported by NSF and EC. The objective is to support HLT R&D international and national projects, and HLT industry, by developing and promoting widely agreed and urgently demanded HLT standards and guidelines for infrastructural language resources, tools, and HLT products. ISLE targets the areas of multilingual computational lexicons (MCL), natural interaction and multimodality (NIMM), and evaluation. For MCL, ISLE is working to: extend EAGLES work on lexical semantics, necessary to establish inter-language links; design standards for multilingual lexicons; develop a prototype tool to implement lexicon guidelines; create EAGLES-conformant sample lexicons and tag corpora for validation purposes; develop standardised evaluation procedures for lexicons. For NIMM, a rapidly innovating domain urgently requiring early standardisation, ISLE work is targeted to develop guidelines for: creation of NIMM data resources; interpretative annotation of NIMM data, including spoken dialogue; annotation of discourse phenomena. For evaluation, ISLE is working on: quality models for machine translation systems; maintenance of previous guidelines - in an ISO based framework. We concentrate in the paper on the Computational Lexicon Working Group, describing in detail the proposals of guidelines for the "Multilingual ISLE Lexical Entry" (MILE). We highlight some methodological principles applied in previous EAGLES, and followed in defining MILE. We also provide a description of the EU SIMPLE semantic lexicons built on the basis of previous EAGLES recommendations. Their importance is given by the fact that these lexicons are now enlarged to real-size lexicons within National Projects in 8 EU countries, thus building a really large infrastructural platform of harmonised lexicons in Europe. We will stress the relevance of standardised language resources also for the humanities applications. Numerous theories, approaches, systems are taken into account in ISLE, as any recommendation for harmonisation must build on the major contemporary approaches. Results will be widely disseminated, after validation in collaboration with EU and US HLT R&D projects, and industry. EAGLES work towards de facto standards has already allowed the field of Language Resources to establish broad consensus on key issues for some well-established areas - and will allow similar consensus to be achieved for other important areas through the ISLE project - providing thus a key opportunity for further consolidation and a basis for technological advance. EAGLES previous results in many areas have in fact already become de facto widely adopted standards, and EAGLES itself is a well-known trademark and a point of reference for HLT projects.Hosted by the Scholarly Text and Imaging Service (SETIS), the University of Sydney Library, and the Research Institute for Humanities and Social Sciences (RIHSS), the University of Sydney

    Un caso di integrazione tra Public History, Cultural Heritage e Digital Humanities: l’Archivio storico della Pontificia Università Gregoriana e il progetto Clavius@school

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    The Historical Archive of the Pontifical Gregorian University (APUG) has started a research project on one of its most important collections, the Christophorus Clavius’s (1538-1612) correspondence. The Clavius on the web project has been enriched by the involvement of teachers and students from three Rome high schools: the Liceo Ennio Quirino Visconti, the Liceo Virgilio and the Liceo Aristofane. The name of this experience is Clavius@school. After a brief presentation about APUG, its activities and Clavius, this paper describes the work done with schools, starting from a philosophical perspective that analyzes technology according to its broader meaning

    The Silent Epidemic of Diabetic Ketoacidosis at Diagnosis of Type 1 Diabetes in Children and Adolescents in Italy During the COVID-19 Pandemic in 2020

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    To compare the frequency of diabetic ketoacidosis (DKA) at diagnosis of type 1 diabetes in Italy during the COVID-19 pandemic in 2020 with the frequency of DKA during 2017-2019

    Production of He-4 and (4) in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

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    Results on the production of He-4 and (4) nuclei in Pb-Pb collisions at root(NN)-N-S = 2.76 TeV in the rapidity range vertical bar y vertical bar <1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0-10% central events are found to be dN/dy4(He) = (0.8 +/- 0.4 (stat) +/- 0.3 (syst)) x 10(-6) and dN/dy4 = (1.1 +/- 0.4 (stat) +/- 0.2 (syst)) x 10(-6), respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (T-chem = 156 MeV) as for light hadrons. The measured ratio of (4)/He-4 is 1.4 +/- 0.8 (stat) +/- 0.5 (syst). (C) 2018 Published by Elsevier B.V.Peer reviewe

    Azimuthal anisotropy of charged jet production in root s(NN)=2.76 TeV Pb-Pb collisions

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    We present measurements of the azimuthal dependence of charged jet production in central and semi-central root s(NN) = 2.76 TeV Pb-Pb collisions with respect to the second harmonic event plane, quantified as nu(ch)(2) (jet). Jet finding is performed employing the anti-k(T) algorithm with a resolution parameter R = 0.2 using charged tracks from the ALICE tracking system. The contribution of the azimuthal anisotropy of the underlying event is taken into account event-by-event. The remaining (statistical) region-to-region fluctuations are removed on an ensemble basis by unfolding the jet spectra for different event plane orientations independently. Significant non-zero nu(ch)(2) (jet) is observed in semi-central collisions (30-50% centrality) for 20 <p(T)(ch) (jet) <90 GeV/c. The azimuthal dependence of the charged jet production is similar to the dependence observed for jets comprising both charged and neutral fragments, and compatible with measurements of the nu(2) of single charged particles at high p(T). Good agreement between the data and predictions from JEWEL, an event generator simulating parton shower evolution in the presence of a dense QCD medium, is found in semi-central collisions. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Peer reviewe

    Forward-central two-particle correlations in p-Pb collisions at root s(NN)=5.02 TeV

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    Two-particle angular correlations between trigger particles in the forward pseudorapidity range (2.5 2GeV/c. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B. V.Peer reviewe

    Long-range angular correlations on the near and away side in p&#8211;Pb collisions at

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    Event-shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at root(NN)-N-S=2.76 TeV

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    Pseudorapidity and transverse-momentum distributions of charged particles in proton-proton collisions at root s=13 TeV

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    The pseudorapidity (eta) and transverse-momentum (p(T)) distributions of charged particles produced in proton-proton collisions are measured at the centre-of-mass energy root s = 13 TeV. The pseudorapidity distribution in vertical bar eta vertical bar <1.8 is reported for inelastic events and for events with at least one charged particle in vertical bar eta vertical bar <1. The pseudorapidity density of charged particles produced in the pseudorapidity region vertical bar eta vertical bar <0.5 is 5.31 +/- 0.18 and 6.46 +/- 0.19 for the two event classes, respectively. The transverse-momentum distribution of charged particles is measured in the range 0.15 <p(T) <20 GeV/c and vertical bar eta vertical bar <0.8 for events with at least one charged particle in vertical bar eta vertical bar <1. The evolution of the transverse momentum spectra of charged particles is also investigated as a function of event multiplicity. The results are compared with calculations from PYTHIA and EPOS Monte Carlo generators. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Peer reviewe

    Elliptic flow of muons from heavy-flavour hadron decays at forward rapidity in Pb-Pb collisions at root s(NN)=2.76TeV

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    The elliptic flow, v(2), of muons from heavy-flavour hadron decays at forward rapidity (2.5 <y <4) is measured in Pb-Pb collisions at root s(NN)= 2.76TeVwith the ALICE detector at the LHC. The scalar product, two- and four-particle Q cumulants and Lee-Yang zeros methods are used. The dependence of the v(2) of muons from heavy-flavour hadron decays on the collision centrality, in the range 0-40%, and on transverse momentum, p(T), is studied in the interval 3 <p(T)<10 GeV/c. A positive v(2) is observed with the scalar product and two-particle Q cumulants in semi-central collisions (10-20% and 20-40% centrality classes) for the p(T) interval from 3 to about 5GeV/c with a significance larger than 3 sigma, based on the combination of statistical and systematic uncertainties. The v(2) magnitude tends to decrease towards more central collisions and with increasing pT. It becomes compatible with zero in the interval 6 <p(T)<10 GeV/c. The results are compared to models describing the interaction of heavy quarks and open heavy-flavour hadrons with the high-density medium formed in high-energy heavy-ion collisions. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V.Peer reviewe
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