Results 21 to 30 of about 4,499,288 (288)
Automatic Early Broken-Rotor-Bar Detection and Classification Using Otsu Segmentation
IEEE Access, 2020 Induction motors (IM) are susceptible to mechanical failures with severe consequences for production lines; hence, detection and classification of IM faults have been of great interest for researchers in last years. Broken rotor bars (BRB) are one of the
Misael Lopez-Ramirez +5 more
doaj +1 more source
Excitation of vibrational soft modes in disordered systems using active oscillation [PDF]
, 2016 We propose a new method to characterize the spatial distribution of particles' vibrations in solids with much lower computational costs compared to the usual normal mode analysis.
72167 +3 more
core +2 more sources
A new positive time-frequency distribution [PDF]
, 1994 This article studies the formulation of new members of the Cohen-Posch (1985) class of positive time-frequency energy distributions. Members of this class are always positive functionals and satisfy the marginal constraints.
Nikias, C L +1 more
core +1 more source
The Random Walk of High Frequency Trading [PDF]
, 2014 This paper builds a model of high-frequency equity returns by separately modeling the dynamics of trade-time returns and trade arrivals. Our main contributions are threefold.
Aldrich, Eric M. +2 more
core +2 more sources
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2020 In aluminum alloy double pulse metal inert-gas (DPMIG) welding, the outputting arc current waveform is distorted under the influence of various factors such as harmonics and impact loads. The arc distortion of aluminum alloy DPMIG welding affects the arc
Kuanfang HE +6 more
doaj +1 more source
Novel characterization method of impedance cardiography signals using time-frequency distributions [PDF]
, 2018 The purpose of this document is to describe a methodology to select the most adequate time-frequency distribution (TFD) kernel for the characterization of impedance cardiography signals (ICG). The predominant ICG beat was extracted from a patient and was
Escrivá Muñoz, Jesús +4 more
core +2 more sources
Geometry of Affine Time–Frequency Distributions
Applied and Computational Harmonic Analysis, 1996 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Flandrin, Patrick, Gonçalves, Paulo
openaire +3 more sources
A time-domain veto for binary inspirals search [PDF]
, 2004 We describe a test to distinguish between actual gravitational waves from binary inspiral and false noise triggers. The test operates in the time domain, and considers the time evolution of the correlator and its statistical distribution.
Guidi, G. M.
core +1 more source
Time delay in the Kuramoto model with bimodal frequency distribution [PDF]
, 2006 We investigate the effects of a time-delayed all-to-all coupling scheme in a large population of oscillators with natural frequencies following a bimodal distribution.
Diego Pazó +4 more
core +2 more sources
Analysis of Cavitation-induced Vibration Characteristics of a Vortex Pump Based on Adaptive Optimal Kernel Time-frequency Representation [PDF]
Journal of Applied Fluid MechanicsCavitation-induced vibration presents a significant challenge in vortex pumps, leading to potential damage to hydraulic components and adverse effects on pump performance. This study aims to investigate the long-term implications of such phenomena.
Y. Wang +4 more
doaj +1 more source