Results 111 to 120 of about 20,191 (260)
Performance of Shift Register based Frequency Hopping OFDM under Doppler spread
, 2013 In this work, the performances of Shift Register based Frequency Hopping Orthogonal Frequency Multiplexing (SR-FH-OFDM) signals over a Doppler spread flat Rayleigh channel is investigated.
Ertan Öztürk +4 more
core +1 more source
Considerations for drug trials in hypertrophic cardiomyopathy
ESC Heart Failure, Volume 12, Issue 2, Page 1095-1112, April 2025.Abstract Hypertrophic cardiomyopathy (HCM) is a heterogeneous condition with potentially serious manifestations. Management has traditionally comprised therapies to palliate symptoms and implantable cardioverter‐defibrillators to prevent sudden cardiac death. The need for disease‐modifying therapies has been recognized for decades.
John P. Farrant +17 more
wiley +1 more source
Storage of Doppler-Shift Information in the Echolocation System of the "CF-FM"-Bat, Rhinolophus ferrumequinum [PDF]
, 1976 The greater horseshoe bat (Rhinolophus ferrumequinum) emits echolocation sounds consisting of a long constant-frequency (CF) component preceeded and followed by a short frequency-modulated (FM) component. When an echo returns with an upward Doppler-shift,
Suga, Nobuo, Schuller, Gerd
core
Coherent shift estimation for stacks of SAR images
, 2011 Speckle tracking is used with SAR images to estimate displacements, in ways that support or integrate interferometric measurements. This paper derives Fisher information expressions for the displacement estimation using coherent speckle tracking, for the
De Zan, Francesco, Francesco De Zan
core +1 more source
ESC Heart Failure, Volume 12, Issue 2, Page 1316-1325, April 2025.Abstract Objective This study aimed to evaluate the utility of left atrial volume and function in uraemic patients using four‐dimensional automatic left atrial quantification (4D auto LAQ) technology. Methods Thirty‐four undialysed uraemic patients (U‐ND group), 60 dialysed uraemic patients (U‐D group), and 32 healthy volunteers (N group) were enrolled
Bing Li, Meihua Chen, Xuning Huang
wiley +1 more source
On the Correlation Between the SAR Backscatter Modulation and Surface Waves Orbital Velocity
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingA challenging effect in the retrieval of ocean surface currents from synthetic aperture radar (SAR) is the so-called wave-induced Doppler velocity. This effect arises from the correlation between the modulation of the normalized radar cross section (NRCS)
Anis Elyouncha, Roland Romeiser
doaj +1 more source
Design and numerical simulation of the real-time particle charge and size analyser
, 2012 The electrostatic charge and size distribution of aerosol particles play a very important role in many industrial applications. Due to the complexity and the probabilistic nature of the different charging mechanisms often acting simultaneously, it is ...
Zhang, Lu
core
Equine Veterinary Journal, EarlyView.Abstract Background Bodyweight, age and breed influence the echocardiographic assessment of foals. There are no echocardiographic studies in Standardbred neonatal foals. Objectives To describe echocardiographic values for selected variables, evaluate intra‐ and inter‐observer variability and assess cardiac changes in the first 5 days of life in healthy
Fernanda Timbó D'el Rey Dantas +8 more
wiley +1 more source
The application of laser doppler technique to vibration measurement and position control.
The laser Doppler interferometer reported here was developed to investigate the possibilities of remote vibration and motion measurements. The method is noncontacting and operates with unprepared targets, using the diffusely scattered light to measure ...
Pleydell, Mark Edward
core
Ultrasensitive Doppler Raman spectroscopy using radio frequency phase shift detection
, 2019 We introduce the first method to enable an optical amplification of a coherent Raman spectroscopy signal called radio frequency Doppler Raman spectroscopy.
Jeffrey J. Field (3952007) +7 more
core +1 more source