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  • Publication . Article . Preprint . 2021
    Open Access English
    Authors: 
    Kong, Lingjing; Lin, Tao; Koloskova, Anastasia; Jaggi, Martin; Stich, Sebastian U.;

    Decentralized training of deep learning models enables on-device learning over networks, as well as efficient scaling to large compute clusters. Experiments in earlier works reveal that, even in a data-center setup, decentralized training often suffers from the degradat...

  • Publication . Conference object . Preprint . Article . 2019
    Open Access English
    Authors: 
    Yichao Yan; Qiang Zhang; Bingbing Ni; Wendong Zhang; Minghao Xu; Xiaokang Yang;

    Person re-identification has achieved great progress with deep convolutional neural networks. However, most previous methods focus on learning individual appearance feature embedding, and it is hard for the models to handle difficult situations with different illuminati...

  • Open Access English
    Authors: 
    Richard M. Plotkin; Elena Gallo; Peter G. Jonker; James Miller-Jones; Jeroen Homan; T. Muñoz-Darias; Sera Markoff; Montserrat Armas Padilla; Rob Fender; A. Rushton; +2 more
    Country: Netherlands

    We present coordinated multiwavelength observations of the high Galactic latitude (b=+50 deg) black hole X-ray binary (XRB) J1357.2-0933 in quiescence. Our broadband spectrum includes strictly simultaneous radio and X-ray observations, and near-infrared, optical, and ul...

  • Open Access English
    Authors: 
    Shreya Anand; Michael W. Coughlin; Mansi M. Kasliwal; Mattia Bulla; Tomas Ahumada; Ana Sagués Carracedo; Mouza Almualla; Igor Andreoni; Robert Stein; Francois Foucart; +39 more
    Countries: Germany, Spain, France, United States
    Project: NSF | PIRE: GROWTH: Global Rela... (1545949), NSF | The SED Machine: an Effic... (1106171), NSF | Simulating the Multi-Mess... (1806278), NSF | ZWICKY TRANSIENT FACILITY (1440341)

    LIGO and Virgo���s third observing run revealed the first neutron star���black hole (NSBH) merger candidates in gravitational waves. These events are predicted to synthesize r-process elements creating optical/near-infrared ���kilonova��� emission. The joint gravitation...

  • Open Access English
    Authors: 
    Mofreh R. Zaghloul;

    In this remark, we identify the cause of the loss of accuracy in the computation of the Faddeyeva function, w ( z ), near the real axis when using Algorithm 680. We provide a simple correction to this problem that allows us to restore this code as one of the important ...

  • Open Access English
    Authors: 
    Liam Connor; J. van Leeuwen; L. C. Oostrum; Emily Petroff; Yogesh Maan; Elizabeth A. K. Adams; Jisk Attema; J. E. Bast; Oliver M. Boersma; H. Dénes; +31 more
    Country: Netherlands
    Project: EC | RadioNet (730562), NWO | Microporous membranes fro... (2300159022), NWO | ARTS - the Apertif Radio ... (2300177746), EC | ALERT (617199)

    ABSTRACT We report the detection of a bright fast radio burst, FRB 191108, with Apertif on the Westerbork Synthesis Radio Telescope. The interferometer allows us to localize the FRB to a narrow 5 arcsec × 7 arcmin ellipse by employing both multibeam information within t...

  • Publication . Article . Preprint . 2020
    Open Access English
    Authors: 
    Sangchul Oh; Jung Jun Park; Hyunchul Nha;
    Publisher: MDPI AG

    We investigate the quantum thermodynamics of two quantum systems, a two-level system and a four-level quantum photocell, each driven by photon pulses as a quantum heat engine. We set these systems to be in thermal contact only with a cold reservoir while the heat (energ...

  • Publication . Conference object . Preprint . Article . 2021
    Open Access English
    Authors: 
    Emiel van Miltenburg; Miruna Clinciu; Ondřej Dušek; Dimitra Gkatzia; Stephanie Inglis; Leo Leppänen; Saad Mahamood; Emma Manning; Stephanie Schoch; Craig Thomson; +1 more
    Publisher: Zenodo
    Country: Finland
    Project: UKRI | NPIF EPSRC Doctoral - Uni... (EP/R512412/1), EC | EMBEDDIA (825153), UKRI | EPSRC Centre for Doctoral... (EP/L016834/1), UKRI | CiViL: Common-sense- and ... (EP/T014598/1)

    We observe a severe under-reporting of the different kinds of errors that Natural Language Generation systems make. This is a problem, because mistakes are an important indicator of where systems should still be improved. If authors only report overall performance metri...

  • Publication . Article . Preprint . Conference object . 2018
    Open Access English
    Authors: 
    David M. Russell; D. M. Bramich; Frederick D. Lewis; Aisha AlMannaei; T. Al Qaissieh; A. Al Qasim; A. Al Yazeedi; Maria Cristina Baglio; Federico Bernardini; N. Elgalad; +7 more
    Publisher: HAL CCSD
    Country: France

    Disc instability models predict that for X-ray binaries in quiescence, there should be a brightening of the optical flux prior to an X-ray outburst. Tracking the X-ray variations of X-ray binaries in quiescence is generally not possible, so optical monitoring provides t...

  • Open Access English
    Authors: 
    Metin Ozturk; Attai Ibrahim Abubakar; Joao Pedro Battistella Nadas; Rao Naveed Bin Rais; Sajjad Hussain; Muhammad Imran;
    Publisher: IEEE
    Country: United Kingdom

    Ultra-dense deployments in 5G, the next generation of cellular networks, are an alternative to provide ultra-high throughput by bringing the users closer to the base stations. On the other hand, 5G deployments must not incur a large increase in energy consumption in ord...