Results 31 to 40 of about 1,008,820 (154)
Random Fatigue Analysis of Drill-Strings in Frequency Domain
MATEC Web of Conferences, 2017 Predicting fatigue damage induced by vibrations is of benefit to oil and gas industry. In this paper a spectral method is developed to estimate the damage of vibration, including both deterministic and random vibration, on the fatigue life of ...
Zheng JiaHao, Yang Jianming, Yang Ping
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Design and Embedded Implementation of Secure Image Encryption Scheme Using DWT and 2D-LASM
Entropy, 2022 In order to further improve the information effectiveness of digital image transmission, an image-encryption algorithm based on 2D-Logistic-adjusted-Sine map (2D-LASM) and Discrete Wavelet Transform (DWT) is proposed.
Heping Wen +13 more
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Enhancing latent palmprints using frequency domain analysis
Intelligent Systems with ApplicationsLatent palmprints are integral to crime scene investigations, constituting a significant portion of encountered prints. They often suffer from poor ridge impressions, noise, and pronounced creases, setting them apart from other palmprint types.
Javad Khodadoust +5 more
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Comparison of Frequency Domain and Time-Domain Methods for Aeromechanical Analysis
International Journal of Rotating Machinery, 2016 Unsteady flow around an oscillating plate cascade and that through a single compressor rotor subject to vibration have been computationally studied, aimed at examining the predictive ability of two low fidelity frequency methods compared with a high ...
M. T. Rahmati
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The Validity of Ultra-Short-Term Heart Rate Variability during Cycling Exercise
Sensors, 2023 Ultra-short-term heart rate variability (HRV) has been validated in the resting state, but its validity during exercise is unclear. This study aimed to examine the validity in ultra-short-term HRV during exercise considering the different exercise ...
Yukiya Tanoue +8 more
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工程科学学报, 2018 In the harsh marine environment, the traditional aluminum alloy coating has difficulty meeting the requirements of use, which can affect equipment performance.
SUN Xiao-feng +4 more
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Spectral and Nonlinear Analysis of Electrodermal Activity in Adolescent Anorexia Nervosa
Applied Sciences, 2020 Anorexia nervosa (AN) is an eating disorder with increasing prevalence in childhood and adolescence. Sympathetic dysregulation is supposed to be the underlying mechanism of increased cardiovascular risk in AN.
Zuzana Visnovcova +8 more
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Equivalence analysis of dielectric test methods in time domain and frequency domain
International Journal of Electrical Power & Energy SystemsWideband dielectric response is crucial for accurate assessment of insulation condition. However, time-domain measurements such as polarization and depolarization current (PDC) tests often lose high-frequency components, while frequency domain ...
Lin Du, Xin Li, Shixian Hui, Chao Xing
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In-Process Chatter Detection Using Signal Analysis in Frequency and Time-Frequency Domain
Machines, 2021 All machining processes involve vibrations generated by structural sources such as a machine’s moving parts or by the interaction between cutting tools and work-pieces.
Michele Perrelli +3 more
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Spectrogram Analysis of Genomes
EURASIP Journal on Advances in Signal Processing, 2004 We performed frequency-domain analysis in the genomes of various organisms using tricolor spectrograms, identifying several types of distinct visual patterns characterizing specific DNA regions.
David Sussillo +2 more
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