Results 11 to 20 of about 664,080 (329)
SALGOT - S
troke A
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ongitudinal study at the University of Got
henburg, prospective cohort study protocol [PDF]
BMC Neurology, 2011 Background Recovery patterns of upper extremity motor function have been described in several longitudinal studies, but most of these studies have had selected samples, short follow up times or insufficient outcomes on motor function.
Lundgren-Nilsson Åsa +5 more
doaj +3 more sources
Trials, 2006 Background Chagas' disease is the major cause of disability secondary to tropical diseases in young adults from Latin America, and around 20 million people are currently infected by T. cruzi.
Casas Juan P +4 more
doaj +2 more sources
IRS-Assisted Wireless Powered NOMA: Do We Really Need Different Phase Shifts in DL and UL? [PDF]
IEEE Wireless Communications Letters, 2021 Intelligent reflecting surface (IRS) is a promising technology to improve the performance of wireless powered communication networks (WPCNs) due to its capability to reconfigure signal propagation environments via smart reflection.
Qingqing Wu, Xiaobo Zhou, R. Schober
semanticscholar +1 more source
Toward UL-DL Rate Balancing: Joint Resource Allocation and Hybrid-Mode Multiple Access for UAV-BS-Assisted Communication Systems [PDF]
IEEE Transactions on Communications, 2021 In this paper, we investigate unmanned aerial vehicle (UAV) assisted communication systems that require quasi-balanced data rates in uplink (UL) and downlink (DL), as well as users’ heterogeneous traffic.
Haiyong Zeng +5 more
semanticscholar +1 more source
UL 4600: What to Include in an Autonomous Vehicle Safety Case
Computer, 2023 Autonomous vehicles (AVs) will not see widespread use until we can be sure that they are acceptably safe. That remains a big challenge, but robust support from safety standards can help.
P. Koopman
semanticscholar +1 more source
Deep Learning for UL/DL Channel Calibration in Generic Massive MIMO Systems [PDF]
ICC 2019 - 2019 IEEE International Conference on Communications (ICC), 2019 One of the fundamental challenges to realize massive Multiple-Input Multiple-Output (MIMO) communications is the accurate acquisition of channel state information for a plurality of users at the base station.
Chongwen Huang +4 more
semanticscholar +1 more source
FDD Massive MIMO via UL/DL Channel Covariance Extrapolation and Active Channel Sparsification [PDF]
IEEE Transactions on Wireless Communications, 2018 We propose a novel method for massive multiple-input multiple-output (massive MIMO) in frequency division duplexing (FDD) systems. Due to the large frequency separation between uplink (UL) and downlink (DL) in FDD systems, channel reciprocity does not ...
Mahdi Barzegar Khalilsarai +3 more
semanticscholar +1 more source
Deterministic Logics for UL [PDF]
, 2013 The class of Unambiguous Star-Free Regular Languages (UL) was defined by Schutzenberger as the class of languages defined by Unambiguous Polynomials. UL has been variously characterized (over finite words) by logics such as TL[X_a,Y_a], UITL, TL[F,P], FO2[
Paritosh K. Pandya, Simoni S. Shah
openaire +2 more sources
Charge and discharge profiles of repurposed LiFePO4 batteries based on the UL 1974 standard
Scientific Data, 2020 Owing to the popularization of electric vehicles worldwide and the development of renewable energy supply, Li-ion batteries are widely used from small-scale personal mobile products to large-scale energy storage systems.
Hsien-Ching Chung
semanticscholar +1 more source
Journal of Neurology, 2020 Objective Unilateral labyrinthectomy (UL) and unilateral vestibular neurectomy (UVN) are two surgical methods to produce vestibular lesions in the mouse.
F. Simon +5 more
semanticscholar +1 more source