Results 21 to 30 of about 34,299,079 (141)

Time-frequency statistical characteristics of cyclostationary signals [PDF]

, 1998
Time-frequency statistical characteristics of cyclostationary signals are studied. The characteristics considered are real and complex instantaneous autospectra.
Vokurka, Karel
core   +1 more source

Time-feature attention-based convolutional auto-encoder for flight feature extraction

Scientific Reports, 2023
Quick Access Recorders (QARs) provide an important data source for Flight Operation Quality Assurance (FOQA) and flight safety. It is generally characterized by large volume, high-dimensionality and high frequency, and these features result in extreme ...
Qixin Wang, Kun Qin, Binbin Lu, Huabo Sun, Ping Shu   +4 more
doaj   +1 more source

Analysis of aptamer-target binding and molecular mechanisms by thermofluorimetric analysis and molecular dynamics simulation

Frontiers in Chemistry, 2023
Introduction: Aptamers are valuable for bioassays, but aptamer-target binding is susceptible to reaction conditions. In this study, we combined thermofluorimetric analysis (TFA) and molecular dynamics (MD) simulations to optimize aptamer-target binding ...
Hong-Li Zhang, Cong Lv, Zi-Hua Li, Song Jiang, Dan Cai, Shao-Song Liu, Ting Wang, Kun-He Zhang   +7 more
doaj   +1 more source

Time-frequency methods for non-stationary statistical signal processing

, 2008
Time-frequency (TF) methods can be used to analyze and process non-stationary random processes in an efficient and intuitive manner. This chapter presents some of the non-parametric methods in this area.
Matz, Gerald, Hlawatsch, Franz
core   +4 more sources

Railway wheel-flat and rail surface defect modelling and analysis by time–frequency techniques [PDF]

, 2013
Damage to the surface of railway wheels and rails commonly occurs in most railways. If not detected, it can result in rapid deterioration and possible failure of rolling stock and infrastructure components causing higher maintenance costs.
Liang, B., Liang, Bo, Crosbee, David, Zhao, Yunshi, Iwnicki, S. D., Zhao, Y., Iwnicki, Simon, Crosbee, D.   +7 more
core   +1 more source

Objective Extraction of Evoked Event-Related Oscillation from Time-Frequency Representation of Event-Related Potentials

Neural Plasticity, 2020
Evoked event-related oscillations (EROs) have been widely used to explore the mechanisms of brain activities for both normal people and neuropsychiatric disease patients. In most previous studies, the calculation of the regions of evoked EROs of interest
Guanghui Zhang, Xueyan Li, Fengyu Cong
doaj   +1 more source

High-Order Time-Reassigned Synchrosqueezing Transform and Its Application in Tight Sandstone Gas Reservoir

IEEE Access
Time-frequency analysis (TFA) can provide relevant information about subsurface reservoirs, which is essential in reservoir identification. Traditional TFA methods are limited by resolution, resulting in unreliable seismic interpretation.
Qiuxiang Zhu, Qifei Li, Yutao Xie, Hui Chen, Yiting Mao   +4 more
doaj   +1 more source

Effective Defect Features Extraction for Laser Ultrasonic Signal Processing by Using Time–Frequency Analysis

IEEE Access, 2019
The time-frequency analysis (TFA) by wavelet transform is adopted for the laser ultrasonic signal processing, and the effective features extraction of the material defect is obtained.
Zhenyu Zhu, Hao Sui, Lei Yu, Hongna Zhu, Jinli Zhang, Jianping Peng   +5 more
doaj   +1 more source

Integration of MRI and somatosensory evoked potentials facilitate diagnosis of spinal cord compression

Scientific Reports, 2023
This study aimed to integrate magnetic resonance imaging (MRI) and related somatosensory evoked potential (SSEP) features to assist in the diagnosis of spinal cord compression (SCC).
Shu-Pin Sun, Chun-Ren Phang, Shey-Cherng Tzou, Chang-Mu Chen, Li-Wei Ko   +4 more
doaj   +1 more source

Time Frequency Analysis of Peking Gamelan [PDF]

, 2020
The tone of peking 1, 2, 3, 5, 6, 1’ was investigated using time-frequency analysis (TFA). The frequencies were measured using PicoScope oscilloscope, Melda analyzer in Cubase version 9 and Adobe version 3. Three different approaches for time-frequency
Marini, Sawawi, Ahmad Fauzi, Musib, Sinin, Hamdan, Musoddiq, Iran Amri   +3 more
core   +4 more sources