Results 41 to 50 of about 75,899 (299)

A Demodulation Model of Dynamic Low-Finesse Fabry-Perot Cavity Based on the Instantaneous Frequency

IEEE Access, 2020
If the measurand changes during the spectrum acquisition process, it easily leads to the failure of the classic demodulation algorithms of low-finesse optical fiber Fabry-Perot (FP) sensors. To address this problem, a novel demodulation model is proposed
Wei Zhang, Bing Xiong, Bin Shao, Xiaohua Lei, Weimin Chen   +4 more
doaj   +1 more source

Kernel estimation of the instantaneous frequency [PDF]

IEEE Transactions on Signal Processing, 1994
We consider kernel estimators of the instantaneous frequency of a slowly evolving sinusoid in white noise. The expected estimation error consists of two terms. The systematic bias error grows as the kernel halfwidth increases while the random error decreases.
openaire   +2 more sources

Heart Rate Variability Characterization Using a Time-Frequency Based Instantaneous Frequency Estimation Technique [PDF]

, 2006
In this paper, a new method for characterizing the newborn heart rate variability (HRV) is proposed. The central of the method is the newly proposed technique for instantaneous frequency (IF) estimation specifically designed for nonstationary ...
M. Mesbah, Malarvili, M.B., Colditz, P. B., L. Rankine, B. Boashash, Boashash, B., Colditz, P.B., Malarvili, M. B., M B Malarvili, Mesbah, M., P. B. Colditz, Rankine, L.   +11 more
core   +1 more source

Low-Complexity Vibration-Based Condition Monitoring for Rolling Bearings: A Novel Instantaneous Amplitude–Frequency Approach

IEEE Open Journal of Instrumentation and Measurement
In vibration-based condition monitoring (VBCM) of rotating machinery, bearing defects typically induce amplitude and frequency modulations, making joint instantaneous amplitude–frequency analysis effective for distinguishing healthy from abnormal ...
Sulaiman Aburakhia, Ismail Hamieh, Sami Muhaidat, Abdallah Shami   +3 more
doaj   +1 more source

Instantaneous Frequency Estimation By Group Delay Attractors And Instantaneous Frequency Attractors

, 2014
Publication in the conference proceedings of EUSIPCO, Lisbon, Portugal ...
Soo-Chang Pei, Shih-Gu Huang
openaire   +3 more sources

Method of estimation of frequency variation relying on estimation of shift of spectral peaks

Системный анализ и прикладная информатика, 2021
Problem of estimation of variated frequency of components of polyharmonic signals has been arose. Three-dimensional time-frequency representation of signals is usually used to resolve this problem.
D. A. Kechik, Yu. P. Aslamov, I. G. Davydov   +2 more
doaj   +1 more source

Identification of the plant mitochondrial OrfX protein: A mass spectrometry approach

FEBS Letters, EarlyView.
The mitochondrial genome of plants contains an open reading frame, orfx, which encodes a rare protein that has so far escaped mass spectrometric detection. The protein resembles the c‐subunit of bacterial twin‐arginine‐motif‐dependent protein translocases (TatC).
Matthias Döring, Jan de Jonge, Hans‐Peter Braun, Nils Rugen   +3 more
wiley   +1 more source

Large‐scale bidirectional arrayed genetic screens identify OXR1 and EMC4 as modifiers of αSynuclein aggregation

FEBS Open Bio, EarlyView.
Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane, Lea Nikolić, Lorenzo Maraio, Thomas Goiran, Nathan Karpilovsky, Stefano Sellitto, Vangelis Bouris, Jiang‐An Yin, Ronald Melki, Edward A Fon, Adriano Aguzzi, Elena De Cecco   +11 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  

Sinusoidal Fitting Decomposition for Instantaneous Characteristic Representation of Multi-Componential Signal

Sensors
The research on how to effectively extract the instantaneous characteristic components of non-stationary signals continues to be both a research hotspot and a very challenging topic.
Donghu Nie, Xin Su, Gang Qiao
doaj   +1 more source