943 research outputs found

    The Search For Learning Community In Learner Paced Distance Education: Or, 'having Your Cake And Eating It, Too!'

    Get PDF
    University distance and e-learning programs generally follow one of two models. Most dual mode institutions and some open universities follow a model of cohort learning. Students start and terminate each course at the same time, and proceed at the same pace. This model allows for occasional or regular group based activities. The second model, referred to as learner paced, is based on increased student independence. Students may start their courses at many points during the year, and complete these at their own pace, depending on the learner's circumstances and interests. It is much more challenging to integrate group based activities in this learner paced model. This study is situated in a university that supports continuous intake and learner pacing in its undergraduate programs. Athabasca University is investigating the feasibility and effectiveness of adding collaborative and cooperative learning activities to this model. The report summarises a study of learner interactions in the context of learner paced courses delivered by the University. Following a review of relevant literature, the study reports on interviews with Athabasca University faculty and external distance education experts, describes results from an online survey of undergraduate students, and documents how these findings may be operationalised at the University. An extensible model of community based learning support is proposed to utilise new social computing capabilities of the web, and to permit learner-learner interaction in a scaleable and cost effective manner, while retaining learner pacing

    The Right to Existence in Developing Countries: Basic Income in East Timor

    Get PDF
    In this article we consider the potential of a Basic Income (BI) as a mechanism for promoting well-integrated and autonomous social and productive development in newly independent Democratic Republic of East Timor, and for expanding the freedom of this country's population that is struggling to throw off the bitter legacy of colonial and postcolonial dispossession and violence. We briefly outline the main social and economic problems faced by the new Democratic Republic of East Timor. Then we argue that a BI financed by oil and natural gas revenues could play a major role in combating these problems

    Experimental Status of Neutrino Physics

    Full text link
    After a fascinating phase of discoveries, neutrino physics still has a few mysteries such as the absolute mass scale, the mass hierarchy, the existence of CP violation in the lepton sector and the existence of right-handed neutrinos. It is also entering a phase of precision measurements. This is what motivates the NUFACT 11 conference which prepares the future of long baseline neutrino experiments. In this paper, we report the status of experimental neutrino physics. We focus mainly on absolute mass measurements, oscillation parameters and future plans for oscillation experiments

    The Right to existence in developing countries : basic income in East Timor

    Get PDF
    In this article we consider the potential of a Basic Income (BI) as a mechanism for promoting well-integrated and autonomous social and productive development in newly independent Democratic Republic of East Timor, and for expanding the freedom of this country's population that is struggling to throw off the bitter legacy of colonial and postcolonial dispossession and violence. We briefly outline the main social and economic problems faced by the new Democratic Republic of East Timor. Then we argue that a BI financed by oil and natural gas revenues could play a major role in combating these problems

    Mapping localized surface plasmons within silver nanocubes using cathodoluminescence hyperspectral imaging

    Get PDF
    Localized surface plasmons within silver nanocubes less than 50 nm in size are investigated using high resolution cathodoluminescence hyperspectral imaging. Multivariate statistical analysis of the multidimensional luminescence dataset allows both the identification of distinct spectral features in the emission and the mapping of their spatial distribution. These results show a 490 nm peak emitted from the cube faces, with shorter wavelength luminescence coming from the vertices and edges; this provides direct experimental confirmation of theoretical predictions

    White Blossom

    Get PDF
    Illustration of Asian man offering white woman flowershttps://scholarsjunction.msstate.edu/cht-sheet-music/4367/thumbnail.jp

    Model-independent evidence for J/ψpJ/\psi p contributions to Λb0J/ψpK\Lambda_b^0\to J/\psi p K^- decays

    Get PDF
    The data sample of Λb0J/ψpK\Lambda_b^0\to J/\psi p K^- decays acquired with the LHCb detector from 7 and 8~TeV pppp collisions, corresponding to an integrated luminosity of 3 fb1^{-1}, is inspected for the presence of J/ψpJ/\psi p or J/ψKJ/\psi K^- contributions with minimal assumptions about KpK^- p contributions. It is demonstrated at more than 9 standard deviations that Λb0J/ψpK\Lambda_b^0\to J/\psi p K^- decays cannot be described with KpK^- p contributions alone, and that J/ψpJ/\psi p contributions play a dominant role in this incompatibility. These model-independent results support the previously obtained model-dependent evidence for Pc+J/ψpP_c^+\to J/\psi p charmonium-pentaquark states in the same data sample.Comment: 21 pages, 12 figures (including the supplemental section added at the end

    Study of Bc+B_c^+ decays to the K+Kπ+K^+K^-\pi^+ final state and evidence for the decay Bc+χc0π+B_c^+\to\chi_{c0}\pi^+

    Get PDF
    A study of Bc+K+Kπ+B_c^+\to K^+K^-\pi^+ decays is performed for the first time using data corresponding to an integrated luminosity of 3.0 fb1\mathrm{fb}^{-1} collected by the LHCb experiment in pppp collisions at centre-of-mass energies of 77 and 88 TeV. Evidence for the decay Bc+χc0(K+K)π+B_c^+\to\chi_{c0}(\to K^+K^-)\pi^+ is reported with a significance of 4.0 standard deviations, resulting in the measurement of σ(Bc+)σ(B+)×B(Bc+χc0π+)\frac{\sigma(B_c^+)}{\sigma(B^+)}\times\mathcal{B}(B_c^+\to\chi_{c0}\pi^+) to be (9.83.0+3.4(stat)±0.8(syst))×106(9.8^{+3.4}_{-3.0}(\mathrm{stat})\pm 0.8(\mathrm{syst}))\times 10^{-6}. Here B\mathcal{B} denotes a branching fraction while σ(Bc+)\sigma(B_c^+) and σ(B+)\sigma(B^+) are the production cross-sections for Bc+B_c^+ and B+B^+ mesons. An indication of bˉc\bar b c weak annihilation is found for the region m(Kπ+)<1.834GeV ⁣/c2m(K^-\pi^+)<1.834\mathrm{\,Ge\kern -0.1em V\!/}c^2, with a significance of 2.4 standard deviations.Comment: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-022.html, link to supplemental material inserted in the reference

    Study of J /ψ production in Jets

    Get PDF
    The production of J/ψ mesons in jets is studied in the forward region of proton-proton collisions using data collected with the LHCb detector at a center-of-mass energy of 13 TeV. The fraction of the jet transverse momentum carried by the J/ψ meson, z(J/ψ)≡pT(J/ψ)/pT(jet), is measured using jets with pT(jet)>20 GeV in the pseudorapidity range 2.5<η(jet)<4.0. The observed z(J/ψ)distribution for J/ψ mesons produced in b-hadron decays is consistent with expectations. However, the results for prompt J/ψ production do not agree with predictions based on fixed-order nonrelativistic QCD. This is the first measurement of the pT fraction carried by prompt J/ψ mesons in jets at any experiment
    corecore