Results 41 to 50 of about 4,533,135 (191)
Field Measurements and Analyses of Traction Motor Noise of Medium and Low Speed Maglev Train
Energies, 2022 In order to reduce the impact of noise on the environment and reduce the dissipation of useless energy of traction motors, this study analyzed the noise of a traction motor by detecting the vibration acceleration of the suspension frame. Field tests were
Fengyu Ou +3 more
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A cross-cultural comparison using the act frequency approach (AFA) in West Germany and the United States [PDF]
, 1990 Angleitner A, Buss DM, Demtröder AI. A cross-cultural comparison using the act frequency approach (AFA) in West Germany and the United States. European journal of personality.
Buss, David M. +2 more
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Determining Dominant Frequency with Data-Adaptive Windows [PDF]
, 2010 Measurement of activation rates in cardiac electrograms is commonly done though estimating the frequency of the sinusoid with the greatest power. This frequency, commonly referred to as Dominant Frequency, is generally estimated using the short-time Fourier Transform with a window of fixed size.
Gagan Mirchandani, Shruti Sharma
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Dynamic Analysis of a Large Deployable Space Truss Structure Considering Semi-Rigid Joints
Aerospace, 2023 Joints are widely used in large deployable structures but show semi-rigidity due to performance degradation and some nonlinear factors affecting the structure’s dynamic characteristics.
Huaibo Yao +4 more
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Loading rate effects on infrasound characterization of uniaxial compression damage in marble
Meitan xuebaoLow-frequency infrasound signals are distinguished by minimal energy attenuation and robust penetration capabilities, endowing them with notable advantages for non-contact monitoring of rock fracture.
Yanbo ZHANG +5 more
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Current Directions in Biomedical Engineering, 2016 Atrial fibrillation is the most common cardiac arrhythmia. Many physicians believe in the hypothesis that persistent atrial fibrillation is maintained by centers of rotatory activity.
Kaltenbacher Wenzel +2 more
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CoRR, 2013 Time series are collected and studied extensively for the knowledge about the data source characteristics such as the trend or the spectral landscape. Some peaks in the spectral landscape correspond to dominant frequencies. The approach here is empirical: all time series are discrete and finite. Contents: Introduction. 1 Examples of periodic phenomena.
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Is the Dominant Frequency Accurate Enough for Atrial Fibrillation Signals ?
Computing in Cardiology Conference (CinC), 2022 In noninvasive studies of atrial fibrillation (AF), especially in body surface potential map (BSPM) measurements, the dominant frequency (DF) is usually defined as the highest peak in the power spectrum, after prior cancellation or removal of the ECG components related to the ventricular activity.
Aline Cabasson +4 more
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An optical fibre-based frequency dissemination network for Australia
, 2011 An optical-fibre network is being planned for distribution of optical and microwave reference frequencies in Australia. This network would connect a number of research facilities and the National Measurement Institute (NMI), allowing long-range ...
Luiten, A. +9 more
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Dominant ethnicity: from minority to majority [PDF]
, 2008 This article argues that the world is in the midst of a long-term transition from dominant minority to dominant majority ethnicity. Whereas minority domination was common in premodern societies, modernity (with its accent on democracy and popular ...
Haklai, O. +3 more
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