91 research outputs found

    The acceptable face of capitalism: law, corporations and economic wellbeing

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    This is the author accepted manuscript. The final version is available from Taylor & Francis (Routledge) via the DOI in this record.In response to concerns that capitalism yields prosperity only at the cost of rising inequality, this paper draws upon examples from employment law and corporate governance to argue that the legal framework should reflect a broad understanding of economic wellbeing that encompasses both the costs and the benefits of corporate activity. To the extent that economic growth expands the scope of corporate welfare provision for employees in large firms, the preoccupation with distributive matters such as executive pay ratios is misplaced; in this context the ideal of equality matters not for its own sake but more because it offers a means of achieving human flourishing and fuller participation in social and economic life. The paper shows how this insight would help to ease the growing financial pressure on state-guaranteed social security, particularly in the context of increasing numbers of self-employed workers in the gig economy

    New Frontier in Cooking Technology - 'Cooking Green'

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    An insulating carbon neutrality bag has been designed, tested and commissioned for green cooking. This has provided an eco - solution that has reduced the amount of energy needed for cooking, save money, reduce emission rate, create employment for the youths/ women and allows for waste to wealth conversion. The Okada Wonder Bag (OWB) was designed, fabricated, and the performance of the bag was critically evaluated using different food stuffs (Beans, Rice, Yam, plantain, Maize, beef, goat meat and Skin/beef ('special kpomo' from the head of a cow) to ascertain the reliability of the bag. Results obtained show a high degree of reliability/correlation as the bag displayed maximum performance in terms of heat conservation and cooking efficiency. Performance characteristics also reveal that the bag with expanded polystyrene insulation was better than that with wood shavings as insulating material. Also, an attempt was made using cooking gas as a case in point to show how much gas/money can be saved and emission reduction by the application ofthe insulation cooking technique and the results were encouragin

    Search for nucleon decays with EXO-200

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    A search for instability of nucleons bound in 136^{136}Xe nuclei is reported with 223 kg⋅\cdotyr exposure of 136^{136}Xe in the EXO-200 experiment. Lifetime limits of 3.3×1023\times 10^{23} and 1.9×1023\times 10^{23} yrs are established for nucleon decay to 133^{133}Sb and 133^{133}Te, respectively. These are the most stringent to date, exceeding the prior decay limits by a factor of 9 and 7, respectively

    Deep Neural Networks for Energy and Position Reconstruction in EXO-200

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    We apply deep neural networks (DNN) to data from the EXO-200 experiment. In the studied cases, the DNN is able to reconstruct the relevant parameters - total energy and position - directly from raw digitized waveforms, with minimal exceptions. For the first time, the developed algorithms are evaluated on real detector calibration data. The accuracy of reconstruction either reaches or exceeds what was achieved by the conventional approaches developed by EXO-200 over the course of the experiment. Most existing DNN approaches to event reconstruction and classification in particle physics are trained on Monte Carlo simulated events. Such algorithms are inherently limited by the accuracy of the simulation. We describe a unique approach that, in an experiment such as EXO-200, allows to successfully perform certain reconstruction and analysis tasks by training the network on waveforms from experimental data, either reducing or eliminating the reliance on the Monte Carlo.Comment: Accepted version. 33 pages, 28 figure

    Characterization of an Ionization Readout Tile for nEXO

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    A new design for the anode of a time projection chamber, consisting of a charge-detecting "tile", is investigated for use in large scale liquid xenon detectors. The tile is produced by depositing 60 orthogonal metal charge-collecting strips, 3~mm wide, on a 10~\si{\cm} ×\times 10~\si{\cm} fused-silica wafer. These charge tiles may be employed by large detectors, such as the proposed tonne-scale nEXO experiment to search for neutrinoless double-beta decay. Modular by design, an array of tiles can cover a sizable area. The width of each strip is small compared to the size of the tile, so a Frisch grid is not required. A grid-less, tiled anode design is beneficial for an experiment such as nEXO, where a wire tensioning support structure and Frisch grid might contribute radioactive backgrounds and would have to be designed to accommodate cycling to cryogenic temperatures. The segmented anode also reduces some degeneracies in signal reconstruction that arise in large-area crossed-wire time projection chambers. A prototype tile was tested in a cell containing liquid xenon. Very good agreement is achieved between the measured ionization spectrum of a 207^{207}Bi source and simulations that include the microphysics of recombination in xenon and a detailed modeling of the electrostatic field of the detector. An energy resolution σ/E\sigma/E=5.5\% is observed at 570~\si{keV}, comparable to the best intrinsic ionization-only resolution reported in literature for liquid xenon at 936~V/\si{cm}.Comment: 18 pages, 13 figures, as publishe
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