Results 41 to 50 of about 4,476,448 (287)
Signal-adaptive evolutionary spectral analysis using instantaneous frequency estimation
, 2021 In this paper we present a signal-adaptive evolutionary spectrum estimation method based on the discrete evolutionary transform (DET). The DET provides a representation for non-stationary signals and a time-frequency kernel that permits us to obtain the ...
Akan, AYDIN
core +1 more source
Over-the-Air Synchronization of Time, Phase and Frequency in a Distributed Receiving System
IEEE Access, 2023 This paper addresses over-the-air synchronization of two distributed receivers connected to a fusion center via digital links. We distinguish between received signals’ synchronization and receiving channels’ synchronization.
Milos Janjic +3 more
doaj +1 more source
Adaptive instantaneous frequency estimation: Techniques and algorithms [PDF]
, 2002 This thesis deals with the problem of the instantaneous frequency (IF) estimation of sinusoidal signals. This topic plays significant role in signal processing and communications.\ud \ud Depending on the type of the signal, two major approaches are ...
Hussain, Zahir M
core
Artificial molecular machines and motors—Design and control of nanoscale motion
FEBS Letters, EarlyView.Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley +1 more source
FEBS Open Bio, EarlyView.This pilot study investigates the potential of Generative AI to provide formative feedback to students. ChatGPT was prompted to provide feedback on Year 1 Bioscience essays, which were evaluated against established good feedback practices. GenAI‐authored feedback had useful elements, but was limited in scope. GenAI may have potential to provide instant,
Annabel Court +3 more
wiley +1 more source
Estimation de la fréquence instantanée des signaux FM par opérateur d'énergie Psi_B [PDF]
, 2011 Psi_B energy operator is an extension of the cross Teager-Kaiser energy operator which is an non-linear energy tracking operator to deal with complex signals and its usefulness for non-stationary signals analysis has been demonstrated. In this letter two
BOUDRAA, Abdel-Ouahab
core
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background X‐linked adrenoleukodystrophy (X‐ALD) is a neurometabolic disorder caused by pathogenic variants in ABCD1, leading to slowly progressive spinal cord disease in nearly all affected men. Sensitive biomarkers to quantify disease severity and predict progression are needed for clinical care and trial design.
Eda G. Kabak +4 more
wiley +1 more source
Instantaneous Frequency Estimation Using Stochastic Calculus and Bootstrapping
EURASIP Journal on Advances in Signal Processing, 2005 Stochastic calculus methods are used to estimate the instantaneous frequency of a signal. The frequency is modeled as a polynomial in time. It is assumed that the phase has a Brownian-motion component. Using stochastic calculus, one is able to develop a
Abutaleb A
doaj +1 more source
Remote Sensing, 2021 The shift in IF (instantaneous frequency) series and the corresponding relaxation time have the potential to characterize sediment properties. However, these attributes derived from SBP (sub-bottom profiler) data are seldom used for offshore site ...
Shaobo Li +3 more
doaj +1 more source
On Digital Estimation Of The Instantaneous Frequency Beyond The Folding Frequency
, 2000 Publication in the conference proceedings of EUSIPCO, Tampere, Finland ...
Ewa Hermanowicz, Miroslaw Rojewski
openaire +3 more sources