Results 71 to 80 of about 683,980 (395)

Recalibrating Gravitational Wave Phenomenological Waveform Model [PDF]

arXiv, 2023
We investigate the possibility of improving the accuracy of the phenomenological waveform model, IMRPhenomD, by jointly optimizing all the calibration coefficients at once, given a set of numerical relativity (NR) waveforms. When IMRPhenomD was first calibrated to NR waveforms, different parts (i.e., the inspiral, merger, and ringdown) of the waveform ...
arxiv  

Experimental Evidence of Swell Signatures in Airborne L5/E5a GNSS-Reflectometry

Remote Sensing, 2020
As compared to GPS L1C/A signals, L5/E5a Global Navigation Satellite System-Reflectometry (GNSS-R) improves the spatial resolution due to the narrower auto-correlation function. Furthermore, the larger transmitted power (+3 dB), and correlation gain (+10
Joan Francesc Munoz-Martin, Raul Onrubia, Daniel Pascual, Hyuk Park, Adriano Camps, Christoph Rüdiger, Jeffrey Walker, Alessandra Monerris   +7 more
doaj   +1 more source

AAPM Task Group No. 249.B—Essentials and guidelines for clinical medical physics residency training program

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract The establishment of guidelines and curriculum standards for medical physics residency training is a critical component of setting expectations and competencies for the profession. Since the last publication of these standards, residency training has become integrated into the eligibility criteria for most medical physics certification bodies.
Jonathon A. Nye, Joseph P. Dugas, William D. Erwin, David P. Gierga, Darryl G. Kaurin, Stephanie M. Leon, Ho‐Ling Anthony Liu, Zheng Feng Lu, Alphonso W. Magri, Lynn N. Rill, Leah K. Schubert, Beth A. Schueler, Irina Vergalasova, John Vetter, Brian D. Wichman, Amy Shu‐Jung Yu, Dandan Zheng   +16 more
wiley   +1 more source

An efficient algorithm for the parallel solution of high-dimensional differential equations

, 2010
The study of high-dimensional differential equations is challenging and difficult due to the analytical and computational intractability. Here, we improve the speed of waveform relaxation (WR), a method to simulate high-dimensional differential-algebraic
Benner, Bjorhus, Burrage, Cong Liu, Henzinger, Holmes, Jeong, Leimkuhler, Leimkuhler, Lumsdaine, Marsan, Marsan, Marsan, Marsan, McMillan, Michael Dellnitz, Molla-Hosseini, Palladino, Ren, Rowley, Stefan Klus, Stoer, Trefethen, Tuhin Sahai, von Luxburg, White, Woodside   +26 more
core   +1 more source

Effective-one-body waveforms for binary neutron stars using surrogate models [PDF]

, 2016
Gravitational-wave observations of binary neutron star systems can provide information about the masses, spins, and structure of neutron stars.
Bernuzzi, Sebastiano, Broeck, Chris Van Den, Galley, Chad R., Lackey, Benjamin D., Meidam, Jeroen   +4 more
core   +3 more sources

Faithful Effective-One-Body waveforms of small-mass-ratio coalescing black-hole binaries [PDF]

Phys.Rev.D76:064028,2007, 2007
We address the problem of constructing high-accuracy, faithful analytic waveforms describing the gravitational wave signal emitted by inspiralling and coalescing binary black holes. We work within the Effective-One-Body (EOB) framework and propose a methodology for improving the current (waveform)implementations of this framework based on understanding,
arxiv   +1 more source

Enhanced analysis of gating latency in 0.35T MR‐linac through innovative time synchronization of a motion phantom and plastic scintillation detector

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study aims to evaluate how different gantry angles, breathing rates (BPM), cine image speeds, and tracking algorithms affect beam on/off latency and the subsequent impact on target dose for a 0.35T MR‐Linac with a 6 MV FFF beam.
Mateb Al Khalifa, Tianjun Ma, Haya Aljuaid, Siyong Kim, William Y. Song   +4 more
wiley   +1 more source

Full Waveform LiDAR for Adverse Weather Conditions

IEEE Transactions on Vehicular Technology, 2020
We present and discuss the case for full waveform pixel and image acquisition and processing to enable LiDAR sensors to penetrate and reconstruct 3D surface maps through obscuring media.
A. Wallace, Abderrahim Halimi, G. Buller
semanticscholar   +1 more source

Neural Source-Filter Waveform Models for Statistical Parametric Speech Synthesis [PDF]

IEEE/ACM Transactions on Audio Speech and Language Processing, 2019
Neural waveform models have demonstrated better performance than conventional vocoders for statistical parametric speech synthesis. One of the best models, called WaveNet, uses an autoregressive (AR) approach to model the distribution of waveform ...
Xin Wang, Shinji Takaki, J. Yamagishi
semanticscholar   +1 more source

Wirelessly Powered Backscatter Communications: Waveform Design and SNR-Energy Tradeoff [PDF]

, 2017
This paper shows that wirelessly powered backscatter communications is subject to a fundamental tradeoff between the harvested energy at the tag and the reliability of the backscatter communication, measured in terms of SNR at the reader. Assuming the RF
Clerckx, Bruno, Huang, Kaibin, Zawawi, Zati Bayani   +2 more
core   +2 more sources