Results 21 to 30 of about 2,136,839 (361)
eLife, 2021 Sleep slow waves are studied for their role in brain plasticity, homeostatic regulation, and their changes during aging. Here, we address the possibility that two types of slow waves co-exist in humans. Thirty young and 29 older adults underwent a night of polysomnographic recordings.
Maude Bouchard +6 more
openaire +3 more sources
EURASIP Journal on Advances in Signal Processing, 2019 Time difference of arrival (TDOA) localization does not require time stamping of the source signal and is playing an increasingly important role in passive location.
Xin Chen +4 more
doaj +1 more source
Sensors, 2022 Recently, the joint estimation for time delay (TD) and direction of arrival (DOA) has suffered from the high complexity of processing multi-dimensional signal models and the ineffectiveness of correlated/coherent signals.
Jinzhi Du +4 more
doaj +1 more source
Single-shot dynamics of spin–orbit torque and spin transfer torque switching in three-terminal magnetic tunnel junctions [PDF]
Nature Nanotechnology, 2020 Current-induced spin-transfer torques (STT) and spin–orbit torques (SOT) enable the electrical switching of magnetic tunnel junctions (MTJs) in non-volatile magnetic random access memories.
E. Grimaldi +7 more
semanticscholar +1 more source
Robust direct position determination methods in the presence of array model errors
EURASIP Journal on Advances in Signal Processing, 2018 Direct position determination (DPD) methods are known to have many advantages over the traditional two-step localization method, especially for low signal-to-noise ratios (SNR) and/or short data records.
Ding Wang +4 more
doaj +1 more source
CRLB for joint estimation of TDOA, phase, FDOA, and Doppler rate
The Journal of Engineering, 2019 To avoid decline of FDOA estimation precision caused by relative Doppler companding, Doppler rate has to be considered and estimated jointly with TDOA, phase, and FDOA. However, CRLB of the joint estimation is still unclear.
Dexiu Hu +4 more
doaj +1 more source
IET Radar, Sonar & Navigation, 2022 Recently, sparse linear arrays have aroused significant attention because they can provide increased degrees of freedom (DOFs) and enlarged inter‐element spacing, which are the critical factors to improve the accuracy of direction of arrival (DOA ...
Fengtong Mei +4 more
doaj +1 more source
“Switched”: store‐switching behaviours [PDF]
International Journal of Retail & Distribution Management, 2008 PurposeThe purpose of this paper is to investigate store‐switching behaviours for main food‐shopping consequent on a change in operator for a major superstore; to relate results to previous research findings on store‐switching levels; and to use the results to emphasise new directions and dimensions for store‐switching research.Design/methodology ...
Findlay, Anne, Sparks, Leigh
openaire +2 more sources
Algebraic distributed source localisation algorithm using TDOA and AOA measurements
The Journal of Engineering, 2019 This study proposes an algebraic distributed source localisation algorithm that combines time difference of arrival (TDOA) and angle of arrival (AOA) measurements. The proposed algorithm uses AOAs to remove the unknown parameters in TDOA equations caused
Zhixin Liu +5 more
doaj +1 more source
Target localisation from bistatic range measurements in multistatic passive radar using MDS
The Journal of Engineering, 2019 The target localisation in a multistatic passive radar system using bistatic range measurements from multiple transmitter–receiver pairs is considered. A novel closed-form solution employing multidimensional scaling (MDS) analysis technique is proposed ...
Yongsheng Zhao +4 more
doaj +1 more source