1,112 research outputs found

    Online Data Reduction for the Belle II Experiment using DATCON

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    The new Belle II experiment at the asymmetric e+e−e^+ e^- accelerator SuperKEKB at KEK in Japan is designed to deliver a peak luminosity of 8×1035cm−2s−18\times10^{35}\text{cm}^{-2}\text{s}^{-1}. To perform high-precision track reconstruction, e.g. for measurements of time-dependent CP-violating decays and secondary vertices, the Belle II detector is equipped with a highly segmented pixel detector (PXD). The high instantaneous luminosity and short bunch crossing times result in a large stream of data in the PXD, which needs to be significantly reduced for offline storage. The data reduction is performed using an FPGA-based Data Acquisition Tracking and Concentrator Online Node (DATCON), which uses information from the Belle II silicon strip vertex detector (SVD) surrounding the PXD to carry out online track reconstruction, extrapolation to the PXD, and Region of Interest (ROI) determination on the PXD. The data stream is reduced by a factor of ten with an ROI finding efficiency of >90% for PXD hits inside the ROI down to 50 MeV in pTp_\text{T} of the stable particles. We will present the current status of the implementation of the track reconstruction using Hough transformations, and the results obtained for simulated \Upsilon(4S) → BBˉ\rightarrow \, B\bar{B} events

    L’univers des bestiaires : Dossier bibliographique et choix de textes

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    EFFICIENCY IN BETTING MARKETS: EVIDENCE FROM ENGLISH FOOTBALL

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    We analyze the efficiency of English football betting markets between 2002 and 2006. We find evidence of a positive favourite-longshot bias for both home odds and away odds. Draw odds are instead characterized by a negative longshot bias. We also identify a draw bias in the sense that betting at draw odds yields a higher return than betting at home or away odds. Finally, we investigate betting strategies that exploit the variance of odds between bookmakers

    A política educacional brasileira a partir anos 90 e as conseqüências para o ensino jurídico

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    A partir de uma leitura sobre a ordem econômica do final do século XX, aqui entendida como ordem neoliberal global,o presente trabalho busca caracterizar as políticas educacionais brasileiras a partir da década de 90 e suas conseqüências para o ensino jurídico, abordando os aspectos jurídicos envolvidos e a regulamentação administrativa da oferta. Em especial, faço a análise das iniciativas governamentais para a educação a partir do Plano Nacional de Educação, da Desvinculação das Receitas da União, da Reforma Universitária e do PROUNI. Os marcos desta leitura tratam da precarização do trabalho docente, da privatização e da oferta e do conteúdo restrito ao direito do consumidor presente nas regulamentações existentes, o que se coloca em oposição à proposta de educação enquanto direito social. Com base em dados quantitativos, busco demonstrar a ocorrência de uma severa hegemonia do setor privado na educação superior brasileira, identificando algumas possíveis conseqüências para a questão da qualidade,da diversidade da oferta e da democracia no acesso

    Le nœud architectural

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    Édifices remarquables et espaces ordinaires aux xxe et xxie siècles. Dialogue entre architecture et anthropologie : tel était le titre provisoire que nous donnions au dossier qui suit lors de la diffusion de l’appel à articles. Il témoignait déjà, pour qui était attentif, de l’espoir que les anthropologues se saisissent à nouveau de l’architecture comme objet de recherche, qu’ils sortent de leur vision de sens commun sur l’architecture savante contemporaine, qu’ils pensent l’articulation entr..
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