Výsledky vyhledávání - "Fast Fourier transform algorithm"

Higher Time to Peak after Stent Implantation in Symptomatic High-Grade Intracranial Atherosclerotic Stenosis is Related to In-Stent Restenosis Autor Zhang, Longhui, Zhu, Haoyu, Zhang, Yupeng, Chen, Fangguang, Sun, Dapeng, Liu, Yufan, Jiang, Chuhan, Miao, Zhongrong, Jia, Baixue

“…), were derived from the time-density curve generated from digital subtraction angiography using the fast Fourier transform algorithm…”
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Electromyographic and Kinematic Analysis of the Flexion-Rotation Trunk Test Autor García-Vaquero, María P, Ruiz-Pérez, Iñaki, Barbado, David, Vera-Garcia, Francisco J

“…García-Vaquero, MP, Ruiz-Pérez, I, Barbado, D, and Vera-Garcia, FJ. Electromyographic and kinematic analysis of the flexion-rotation trunk test. J Strength…”
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Modeling cracks and inclusions near surfaces under contact loading Autor Zhou, Kun, Wei, Rongbing

“…In this work, a semi-analytic solution is developed for multiple cracks and inhomogeneous inclusions of arbitrary shape beneath a half-space surface subject to contact loading…”
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Extended C37.118.1 PMU Algorithms for Joint Tracking of Fundamental and Harmonic Phasors in Stressed Power Systems and Microgrids Autor Chakir, M., Kamwa, I., Le Huy, H.

“…) with the capability of accurately tracking single-phase harmonic phasors subject to varying nominal frequency and out-of band interharmonic interference…”
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Changes in Electromagnetic Activity Following Osteopathic Manipulative Treatment: A Novel Assessment Using Induction Sensors Autor Savla, Paras, Brazdzionis, James, Marino, Maxwell, Siddiqi, Imran, Sweiss, Raed, King, Christopher, Miulli, Dan E

“… This study aimed to evaluate whether these EMF changes could be identified post-treatment. Methods A pilot study was conducted with 35 subjects who had EMF measurements…”
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Tissue sodium concentration and sodium T 1 mapping of the human brain at 3 T using a Variable Flip Angle method Autor Coste, Arthur, Boumezbeur, Fawzi, Vignaud, Alexandre, Madelin, Guillaume, Reetz, Kathrin, Le Bihan, Denis, Rabrait-Lerman, Cécile, Romanzetti, Sandro

“…) maps using the VFA method. Images are reconstructed using the non-uniform Fast Fourier Transform algorithm and TSC maps are corrected for possible…”
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Tissue sodium concentration and sodium T1 mapping of the human brain at 3 T using a Variable Flip Angle method Autor Coste, Arthur, Boumezbeur, Fawzi, Vignaud, Alexandre, Madelin, Guillaume, Reetz, Kathrin, Le Bihan, Denis, Rabrait-Lerman, Cécile, Romanzetti, Sandro

“…) maps using the VFA method. Images are reconstructed using the non-uniform Fast Fourier Transform algorithm and TSC maps are corrected for possible…”
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Skin blood flowmotion response to insulin iontophoresis in normal subjects Autor Rossi, M., Maurizio, S., Carpi, A.

“…). Using a Fast Fourier transform algorithm, power density (PD) of the total flowmotion spectrum, from 0.009…”
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Numerical approach to second-order canonical perturbation theory in the planetary 3-body problem: Application to exoplanets Autor Alnajjarine, Aya, Mogavero, Federico, Laskar, Jacques

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Short- and long-term reproducibility of time and frequency domain heart rate variability measurements in normal subjects Autor Pitzalis, M V, Mastropasqua, F, Massari, F, Forleo, C, Di Maggio, M, Passantino, A, Colombo, R, Di Biase, M, Rizzon, P

“… (total power, low frequency, and high frequency) were made by means of both the Fast Fourier Transform algorithm (FFT…”
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Inverse coupling between ultradian oscillations in delta wave activity and heart rate variability during sleep Autor Brandenberger, Gabrielle, Ehrhart, Jean, Piquard, François, Simon, Chantal

“…)] calculated using spectral analysis of R-R intervals. EEG spectra were analyzed using a fast Fourier transform algorithm. Results…”
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Waking EEG in primary insomnia Autor Wolynczyk-Gmaj, Dorota, Szelenberger, Waldemar

“… Waking EEG from 21 scalp electrodes was subjected to spectral analyses using a fast Fourier transform algorithm…”
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Acute and six-month depression-related abnormalities in the sleep-wake rhythm of cardiac autonomic activity in survivors of acute coronary syndromes Autor Castro, M.N., Vigo, D.E., Gustafson, D.R., Vila-Pérez, I., Massaro, P., García, C., Nemeroff, C.B., Guinjoan, S.M., Ladrón-de-Guevara, M.S.

“… HRV was measured during wake and sleep (23.00h-07.00h) with a fast Fourier transform algorithm…”
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Orthostatic sympathetic derangement in subjects with fibromyalgia Autor Martínez-Lavín, M, Hermosillo, A G, Mendoza, C, Ortiz, R, Cajigas, J C, Pineda, C, Nava, A, Vallejo, M

“… Spectral analysis of R-R intervals was done by the fast Fourier transform algorithm. Analyses of the different frequency components revealed significant difference between the 2 groups in the low frequency (0.050-0.150 Hz…”
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Sympathovagal balance of the heart in subjects with spinal cord injury Autor Grimm, D R, De Meersman, R E, Almenoff, P L, Spungen, A M, Bauman, W A

“… Measurements were collected at baseline and during provocative maneuvers. Spectral analysis using a fast-Fourier transform algorithm revealed two spectral components of HRV, termed low frequency (LF…”
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Sequential spectral analysis of 24-hour blood pressure and pulse interval in humans Autor Parati, G, Castiglioni, P, Di Rienzo, M, Omboni, S, Pedotti, A, Mancia, G

“… over a 24-hour period using the fast Fourier transform algorithm and splitting the recording into contiguous segments of 256 beats. About 70…”
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Alpha activity and cardiac correlates: three types of relationships during nocturnal sleep Autor Ehrhart, J, Toussaint, M, Simon, C, Gronfier, C, Luthringer, R, Brandenberger, G

“…) by the interbeat autocorrelation coefficient of R-R intervals (rRR). EEG spectral analysis was performed using a fast Fourier transform algorithm. Results…”
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Stochastic analysis of solute transport in heterogeneous aquifers subject to spatiotemporal random recharge Autor Li, Liyong, Graham, Wendy D.

“…This paper extends the work of Li and Graham [1998] to deal with the unconditional moments of head, velocity, and concentration under transient flow…”
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Stochastic analysis of transient flow in unsaturated heterogeneous soils Autor Foussereau, X., Graham, W. D., Rao, P. S. C.

“…‐related moment equations are solved analytically in the Laplace domain. Then, the analytical results are numerically inverted using a modified fast Fourier transform algorithm…”
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Sleep spindle-related electroencephalograph activity of young adults and its relation to cognitive functions Autor Nakşidil Torun Yazıhan, Sinan Yetkin

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