Results 51 to 60 of about 6,742,308 (298)

Resolving Non-Proportional Frequency Components in Rotating Machinery Signals Using Local Entropy Selection Scaling–Reassigning Chirplet Transform

Aerospace
Under complex operating conditions, vibration signals from rotating machinery often exhibit non-stationary characteristics with non-proportional and closely spaced instantaneous frequency (IF) components. Traditional time–frequency analysis (TFA) methods
Dapeng Quan, Yuli Niu, Zeming Zhao, Caiting He, Xiaoze Yang, Mingyang Li, Tianyang Wang, Lili Zhang, Limei Ma, Yong Zhao, Hongtao Wu   +10 more
doaj   +1 more source

Sea Clutter Suppression Using Smoothed Pseudo-Wigner–Ville Distribution–Singular Value Decomposition during Sea Spikes

Remote Sensing, 2023
The detection of small targets within the background of sea clutter is a significant challenge faced in radar signal processing. Small target echoes are weak in energy, and can be submerged by sea clutter and sea spikes, which are caused by overturning ...
Guigeng Li, Hao Zhang, Yong Gao, Bingyan Ma   +3 more
doaj   +1 more source

DynPeak : An algorithm for pulse detection and frequency analysis in hormonal time series [PDF]

, 2011
The endocrine control of the reproductive function is often studied from the analysis of luteinizing hormone (LH) pulsatile secretion by the pituitary gland.
A Vidal, Alexandre Vidal, Claire Médigue, D Baird, D Baird, D Keenan, Frédérique Clément, I Clarke, J Veldhuis, L Drouilhet, M Matsumoto, M Sollenberger, Qinghua Zhang, R Urban, S Moenter, S Moenter, Stéphane Fabre, Thomas Höfer   +17 more
core   +7 more sources

Survival Outcomes and Complications Among Canadian Children With Retinoblastoma: A Population‐Based Report From CYP‐C

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Retinoblastoma (RB) is the most common pediatric ocular cancer, yet population‐based data on survival and risk factors remain limited. This study aimed to describe survival in a large national RB cohort and identify predictors of death and complications.
Samuel Sassine, Ofélie Trudeau‐Ferrin, Caroline Laverdière, Patrick Hamel, Rosanne Superstein, Bénédicte Koukoui, Carole Provost, Paul C. Nathan, Vijay Ramaswamy, Furqan Shaikh, Brenda Gallie, Ashwin Mallipatna, Stephanie Kletke, Helen Dimaras, Hallie Coltin   +14 more
wiley   +1 more source

A New Model for Human Running Micro-Doppler FMCW Radar Features

Applied Sciences, 2023
Human body detection is very important in the research of automotive safety technology. The extraction and analysis of human micro-motion based on frequency-modulated continuous wave (FMCW) radar is gradually receiving attention.
Yongqiang Zhang, Xiaopeng Li, Guilei Ma, Jinlong Ma, Menghua Man, Shanghe Liu   +5 more
doaj   +1 more source

Time-frequency analysis of the restricted three-body problem: transport and resonance transitions [PDF]

, 2004
A method of time-frequency analysis based on wavelets is applied to the problem of transport between different regions of the solar system, using the model of the circular restricted three-body problem in both the planar and the spatial versions of the ...
Marsden, Jerrold E., Vela-Arevalo, Luz V.   +1 more
core   +2 more sources

Personalized Selumetinib Dosing in Pediatric Neurofibromatosis Type 1: Insights From a Pilot Therapeutic Drug Monitoring Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Objective To evaluate selumetinib exposure using therapeutic drug monitoring (TDM) in pediatric patients with neurofibromatosis type 1 (NF1) and plexiform neurofibromas (PN), assess interpatient pharmacokinetic variability, and explore the relationship between drug exposure, clinical response, and adverse effects.
Janka Kovács, Zoltán Köllő, Balázs Gellért Karvaly, Mahmoud Obeidat, Rita Nagy, Péter Hegyi, Brigitta Teutsch, Eszter Tuboly, Miklós Garami   +8 more
wiley   +1 more source

Time–frequency analysis using spiking neural network

Neuromorphic Computing and Engineering
Time–frequency analysis plays a crucial role in various fields, including signal processing and feature extraction. In this article, we propose an alternative and innovative method for time–frequency analysis using a biologically inspired spiking neural ...
Moshe Bensimon, Yakir Hadad, Yehuda Ben-Shimol, Shlomo Greenberg   +3 more
doaj   +1 more source

Area-Efficient Short-Time Fourier Transform Processor for Time–Frequency Analysis of Non-Stationary Signals

Applied Sciences, 2020
In this paper, we propose an area-efficient short-time Fourier transform (STFT) processor that can perform time–frequency analysis of non-stationary signals in real time, which is essential for voice or radar-signal processing systems.
Hohyub Jeon, Yongchul Jung, Seongjoo Lee, Yunho Jung   +3 more
doaj   +1 more source

A time frequency analysis of wave packet fractional revivals

, 2007
We show that the time frequency analysis of the autocorrelation function is, in many ways, a more appropriate tool to resolve fractional revivals of a wave packet than the usual time domain analysis.
Auger F Flandrin P Goncalves P Lemoine O, Banerji J, Banerji J, Chui C K, Grobmann F, Ingrid D, J Banerji, Jyotsna I V, Meacher D R, Nauenberg M, Polikar R, Roy U, Suranjana Ghosh, Veilande R   +13 more
core   +1 more source