1,998 research outputs found

    Innovation in aquaculture teaching and learning

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    This report has been prepared by the Workpackage 5 working group on innovation in learning. It aims to summarise the main findings of the group, and serve as an introduction to the topic for teachers and learners in aquaculture and aquatic resources management. The main focus of the group is the use of Information and Communications Technologies (ICT) in teaching and learning. The increasing power of computers and particularly their interconnections through the Internet, is changing the social and economic landscape and presenting new opportunities and challenges for learners, educators and academic institutions. This document has been developed from presentations and discussions between the group members. It aims to identify the key technologies and trends affecting higher education in Europe and potential responses by the aquaculture and aquatic resource community. The aim is to briefly introduce key themes, technologies and state of the art. Most of the topics can be explored in much greater detail through the Internet links that are provided at the end of each section

    Constraints on the χ_(c1) versus χ_(c2) polarizations in proton-proton collisions at √s = 8 TeV

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    The polarizations of promptly produced χ_(c1) and χ_(c2) mesons are studied using data collected by the CMS experiment at the LHC, in proton-proton collisions at √s=8  TeV. The χ_c states are reconstructed via their radiative decays χ_c → J/ψγ, with the photons being measured through conversions to e⁺e⁻, which allows the two states to be well resolved. The polarizations are measured in the helicity frame, through the analysis of the χ_(c2) to χ_(c1) yield ratio as a function of the polar or azimuthal angle of the positive muon emitted in the J/ψ → μ⁺μ⁻ decay, in three bins of J/ψ transverse momentum. While no differences are seen between the two states in terms of azimuthal decay angle distributions, they are observed to have significantly different polar anisotropies. The measurement favors a scenario where at least one of the two states is strongly polarized along the helicity quantization axis, in agreement with nonrelativistic quantum chromodynamics predictions. This is the first measurement of significantly polarized quarkonia produced at high transverse momentum
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