Sensors, 2023 Frequency estimation plays a critical role in vital sign monitoring. Methods based on Fourier transform and eigen-analysis are commonly adopted techniques for frequency estimation.
Yue-Der Lin +3 more
doaj +1 more source
A tutorial review on time-frequency analysis of non-stationary vibration signals with nonlinear dynamics applications [PDF]
, 2021 Time-frequency analysis (TFA) for mechanical vibrations in non-stationary operations is the main subject of this article, concisely written to be an introducing tutorial comparing different time-frequency techniques for non-stationary signals. The theory
Varanis, Marcus +3 more
core +1 more source
KARAKTERISTIK MIKROTREMOR BERDASARKAN ANALISIS SPEKTRUM, ANALISIS TFA (TIME FREQUENCY ANALYSIS) DAN ANALISIS SEISMISITAS PADA KAWASAN JALUR SESAR OPAK MICROTREMOR CHARACTERISTICS BASED ON SPECTRUM ANALYSIS, TIME FREQUENCY ANALYSIS, SEISMICITY ANALYSIS AT OPAK FAULT AREA [PDF]
, 2017 AbstrakTujuan dari penelitian ini adalah mengetahui karakteristik mikrotremor berdasarkan citra TFA dan spektrum dan mengetahui seismisitas menggunakan analisis b-value di sekitar kawasan sesar Opak.
Budi Wibowo, Nugroho +5 more
core +2 more sources
, 2019 TFA = the time to the first request for additional analgesics.
Dang Wei (3505760) +4 more
core +1 more source
Defence Technology, 2023 Nyquist Folding Receiver (NYFR) is a perceptron structure that realizes a low probability of intercept (LPI) signal analog to information. Aiming at the problem of LPI radar signal receiving, the time domain, frequency domain, and time-frequency domain ...
Tao Wan, Kai-li Jiang, Hao Ji, Bin Tang
doaj +1 more source
Parameterised time-frequency analysis methods and their engineering applications: a review of recent advances [PDF]
, 2018 It is well known that time-frequency analysis (TFA) characterises signals in time-frequency plane. Theoretically, traditional non-parameterised TFA can analyze any signal, but it is unable to provide the best representation for complex signals.
Peng, Z +4 more
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 +4 more
doaj +1 more source
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 +7 more
doaj +1 more source
Prevention of spinal cord injury with time-frequency analysis of evoked potentials: An experimental study [PDF]
, 2001 Objectives - To verify the applicability and validity of time-frequency analysis (TFA) of evoked potential (EP) signals in detecting the integrity of spinal cord function and preventing spinal cord injury.
Holmes, A +4 more
core +1 more source
Local polynomial modeling of time-varying autoregressive models with application to time-frequency analysis of event-related EEG [PDF]
, 2011 This paper proposes a new local polynomial modeling (LPM) method for identification of time-varying autoregressive (TVAR) models and applies it to time-frequency analysis (TFA) of event-related electroencephalogram (ER-EEG).
Z G Zhang +5 more
core +1 more source