Results 81 to 90 of about 158,434 (296)
Interferometric methods of the doppler shift determination
Odessa Astronomical Publications, 2017 About interferometric methods of the doppler shift ...
V. E. Panchuk +2 more
doaj +1 more source
Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots
Advanced Robotics Research, EarlyView.This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou +4 more
wiley +1 more source
Research of Mobile Underwater Acoustic Communication of M-Ary Combining FDM and Piecewise-LFM
Xibei Gongye Daxue Xuebao, 2019 Aiming at the countering doppler shift, a mobile underwater acoustic communication scheme of M-ary via FDM-PLFM is proposed. The cross-correlation between piecewise linear frequency modulation(PLFM) and traditional LFM signal is analyzed based on the ...
doaj +1 more source
Doppler shift experiments with source in periodic motion: Parametrized Doppler shift formulas
, 2003 Doppler shift formulas are derived for two less studied scenarios: stationary receiver and source in harmonic oscillatory motion and stationary receiver and source in uniform circular motion. For each of the scenarios we derive a formula, one which works when the emission period is small enough that it can be considered that two successive signals are ...
Rothenstein, Bernhard +1 more
openaire +2 more sources
Advanced Robotics Research, EarlyView.A flexible, skin‐integrated electromagnetic actuator is developed for wearable virtual/augmented reality (VR/AR) haptic systems. A tunable design model enables control over displacement and resonance frequency. The system is validated through a custom VR application with a 6 × 4 actuator array, demonstrating real‐time, spatially targeted tactile ...
Naji Tarabay +9 more
wiley +1 more source
Sleep Alters the Velocity of Physiological Brain Pulsations in Humans
Advanced Science, EarlyView.Sleep alters I/CSF oscillatory flow, driven by increased respiratory (29%) and vasomotor pulsation (21%) velocities, while cardiovascular pulsations decreased by (22%). Velocity is quantified using optical flow analysis of MREG data. Spectral power increases alongside these pulsations (spatial correlation, r = 0.35 and r = 0.39, respectively ...
Ahmed Elabasy +13 more
wiley +1 more source
The doppler shift transient field method
Progress in Particle and Nuclear Physics, 2001 Abstract A novel method to measure the magnetic moments of subpico-second high-spin states via the precession in a transient magnetic field is proposed, which avoids the uncertainties of delayed side and cascade feedings inherent in heavy-ion compound reactions.
openaire +2 more sources
Advanced Science, EarlyView.Lipid overload suppresses SREBF2‐mediated FNTB expression, leading to defective Lamin A maturation and nuclear envelope instability. This nuclear catastrophe triggers a pro‐fibrotic senescence program in cardiomyocytes. Notably, restoring nuclear integrity via AAV9‐based gene therapy effectively attenuates cardiac remodeling, identifying the ...
Yuxiao Chen +16 more
wiley +1 more source
Extending the LoRa Direct-to-Satellite Limits: Doppler Shift Pre-Compensation
IEEE Open Journal of the Communications SocietyEarlier studies and field tests have extensively investigated Long Range (LoRa) direct-to-satellite (DtS) communications, confirming the feasibility of integration with Low Earth Orbit (LEO) satellites.
Muhammad Asad Ullah +8 more
doaj +1 more source
Doppler Shift Estimation for Millimeter-Wave Communication Systems on High-Speed Railways
IEEE Access, 2019 The millimeter-wave (mmWave) technology is one possible solution to addressing the explosive requirements for mobile data access on high-speed railways (HSRs).
Chong Zhang +5 more
doaj +1 more source