Results 1 to 10 of about 796,849 (314)

Frequency spectrum recurrence analysis. [PDF]

open access: yesSci Rep, 2020
AbstractIn this paper, we present the new frequency spectrum recurrence analysis technique by means of electro-encephalon signals (EES) analyses. The technique is suitable for time series analysis with noise and disturbances. EES were collected, and alpha waves of the occipital region were analysed by comparing the signals from participants in two ...
Ladeira G   +4 more
europepmc   +6 more sources

Revisiting the Transferability of Few-Shot Image Classification: A Frequency Spectrum Perspective [PDF]

open access: yesEntropy
Few-shot learning, especially few-shot image classification (FSIC), endeavors to recognize new categories using only a handful of labeled images by transferring knowledge from a model trained on base categories.
Min Zhang, Zhitao Wang, Donglin Wang
doaj   +2 more sources

The Site Frequency Spectrum for General Coalescents. [PDF]

open access: yesGenetics, 2016
Abstract General genealogical processes such as Λ- and Ξ-coalescents, which respectively model multiple and simultaneous mergers, have important applications in studying marine species, strong positive selection, recurrent selective sweeps, strong bottlenecks, large sample sizes, and so on.
Spence JP, Kamm JA, Song YS.
europepmc   +7 more sources

Substrate Integrated Waveguide Quasi-Elliptic Filter with Arbitrary Termination Impedances [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2022
This paper presents a quasi-elliptic filter (QEF) with arbitrary termination impedances (ATI). The proposed QEF is designed by adding cross-coupling between the first and last resonators of an ATI bandpass filter (BPF) with the Chebyshev response.
Phanam Pech   +3 more
doaj   +1 more source

Connection Between Damping Torque Analysis and Energy Flow Analysis in Damping Performance Evaluation for Electromechanical Oscillations in Power Systems

open access: yesJournal of Modern Power Systems and Clean Energy, 2022
The damping performance evaluation for electro-mechanical oscillations in power systems is crucial for the stable operation of modern power systems. In this paper, the connection between two commonly-used damping performance evaluation methods, i.e., the
Yong Hu   +4 more
doaj   +1 more source

Experiments with the Site Frequency Spectrum [PDF]

open access: yesBulletin of Mathematical Biology, 2010
Evaluating the likelihood function of parameters in highly-structured population genetic models from extant deoxyribonucleic acid (DNA) sequences is computationally prohibitive. In such cases, one may approximately infer the parameters from summary statistics of the data such as the site-frequency-spectrum (SFS) or its linear combinations. Such methods
Sainudiin, R   +8 more
openaire   +5 more sources

Alpha peak activity in resting-state EEG is associated with depressive score

open access: yesFrontiers in Neuroscience, 2023
IntroductionDepression is a serious psychiatric disorder characterized by prolonged sadness, loss of interest or pleasure. The dominant alpha peak activity in resting-state EEG is suggested to be an intrinsic neural marker for diagnosis of mental ...
Peng Zhou   +15 more
doaj   +1 more source

Vibration Resonance Spectrometry (VRS) for the Advanced Streaming Detection of Rotor Unbalance

open access: yesMachines, 2023
Determination of the diagnosis thresholds is crucial for the fault diagnosis of industry assets. Rotor machines under different working conditions are especially challenging because of the dynamic torque and speed.
Matthew T. Gerdes   +5 more
doaj   +1 more source

Fundamentals for measurement of film thickness adhered on lubricating surface using ultrasonic method

open access: yesNihon Kikai Gakkai ronbunshu, 2023
In order to obtain the fundamental information for the measurement of thin oil film thickness adhered on lubrication surface using ultrasonic method, the ultrasonic calculation considering the scattering attenuation at each interface and the influence of
Akitoshi TAKEUCHI
doaj   +1 more source

Effect of 8 weeks of training with an elastic band on frequency spectrum of lower limb muscles in genu valgum patients during running [PDF]

open access: yesمجله پزشکی دانشگاه علوم پزشکی تبریز, 2023
Background. Due to the special structure of the knee joint in genu valgus individuals, neuromuscular characteristics of muscles can be disturbed and this may change postural control.
Farshad Ghorbaniou   +2 more
doaj   +1 more source

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