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REVIEW Analysis of local ionospheric time varying characteristics
"... © The Author(s) 2010. This article is published with open access at Springerlink.com ..."
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© The Author(s) 2010. This article is published with open access at Springerlink.com
The Time-Varying Characteristics of Overhead Electric Transmission Lines Considering the Induced-Ice-Shedding Effect
"... More ice deposits accreted on conductors or ground wires may be shed off when an overhead electric transmission line is responding to shocks initiated by natural ice shedding. Ice shedding causes the global mass, stiffness, and damping of the tower-line system to vary with time, and the successive ..."
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More ice deposits accreted on conductors or ground wires may be shed off when an overhead electric transmission line is responding to shocks initiated by natural ice shedding. Ice shedding causes the global mass, stiffness, and damping of the tower-line system to vary with time, and the successive
Time Varying Characteristics of First and SecondOrder Moments of Pulsating Turbulent Pipe Flow
"... The present work investigates the effects of a forced harmonic oscillations of fixed frequency and amplitudes on the characteristics of a turbulent pipe flow with a mean Reynolds based on the cross sectional bulk velocity and pipe diameter of 5900. The setup refers to an extremely thin Stokes layer ..."
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The present work investigates the effects of a forced harmonic oscillations of fixed frequency and amplitudes on the characteristics of a turbulent pipe flow with a mean Reynolds based on the cross sectional bulk velocity and pipe diameter of 5900. The setup refers to an extremely thin Stokes layer
r Human Brain Mapping 30:3445–3460 (2009) r Time-Varied Characteristics of Acupuncture Effects in fMRI Studies
"... r Abstract: When studying the neural responses to acupuncture with a block-designed paradigm, its temporal dynamics predicted by the general linear model (GLM) conforms to typical ‘‘on-off’ ’ variations during a limited period of the experiment manipulation. Despite a lack of direct evidence associa ..."
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r Abstract: When studying the neural responses to acupuncture with a block-designed paradigm, its temporal dynamics predicted by the general linear model (GLM) conforms to typical ‘‘on-off’ ’ variations during a limited period of the experiment manipulation. Despite a lack of direct evidence associating its psychophysiological response, numerous clinical reports suggest that acupuncture can provide pain relief beyond a needling session. Therefore, a typical GLM analysis may be insensitive or inappropriate for identifying altered neural responses resulting from acupuncture. We developed a new approach to investigate the dynamics underlying sustained effects of acupuncture. Specifically, we designed two separate models to evaluate the baseline activities (prior to stimulation) and neural activities in sequential epochs, using three block-designed functional runs: acupuncture at acupoint
Time-varying Stiffness Characteristics of Shaft with Slant Crack
"... Abstract—The stiffness matrix of a shaft with slant transverse crack under the common action of axial force, moment and torque was derived based on material mechanics, local flexibility and fracture mechanics theory and apply strain energy release rate method. The opening and closing regularity of t ..."
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of the crack and the shaft rigidity varying characteristics was simulated in a steady state rotating by apply the stress intensity factor is zero method, and the time-varying characteristics of inclination of 45 ° cracked shaft stiffness was detailed study. The studies have shown that, the stiffness of shaft
Time-varying properties of renal autoregulatory mechanisms
- IEEE Transactions on Biomedical Engineering
, 2002
"... Abstract—In order to assess the possible time-varying prop-erties of renal autoregulation, time-frequency and time-scaling methods were applied to renal blood flow under broad-band forced arterial blood pressure fluctuations and single-nephron renal blood flow with spontaneous oscillations obtained ..."
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Cited by 2 (0 self)
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(TGF) mechanisms have time-varying characteristics. Furthermore, we utilized the Renyi entropy to measure the complexity of blood-flow dynamics in the time-frequency plane in an effort to discern differences between normotensive and hypertensive recordings. We found a clear difference in Renyi entropy
Resurrecting the (C)CAPM: A Cross-Sectional Test When Risk Premia Are Time-Varying
- Journal of Political Economy
, 2001
"... This paper explores the ability of conditional versions of the CAPM and the consumption CAPM—jointly the (C)CAPM—to explain the cross section of average stock returns. Central to our approach is the use of the log consumption–wealth ratio as a conditioning variable. We demonstrate that such conditio ..."
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Cited by 246 (10 self)
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that such conditional models perform far better than unconditional specifications and about as well as the Fama-French three-factor model on portfolios sorted by size and book-to-market characteristics. The conditional consumption CAPM can account for the difference in returns between low-book-to-market and high
Stable adaptive control of feedback linearizable time-varying nonlinear systems with application to fault tolerant engine control
- International Journal of Control
, 2000
"... Abstract Stable indirect and direct adaptive controllers are presented for a class of input-output feedbacklinearizable time-varying nonlinear systems. The radial basis function neural networks are used as on-line approximators to learn the time-varying characteristics of system parameters. Stabilit ..."
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Cited by 4 (2 self)
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Abstract Stable indirect and direct adaptive controllers are presented for a class of input-output feedbacklinearizable time-varying nonlinear systems. The radial basis function neural networks are used as on-line approximators to learn the time-varying characteristics of system parameters
Modeling and controller design of a nonlinear time-varying thermal device in a microfluidic platform
"... Abstract-A switching controller is designed and implemented in a custom-made temperature control system to perform sensitive bio-chemical reactions for medical diagnostics within a microfluidic platform. Nonlinear and time-varying characteristics of the plant are considered, and the system is appro ..."
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Abstract-A switching controller is designed and implemented in a custom-made temperature control system to perform sensitive bio-chemical reactions for medical diagnostics within a microfluidic platform. Nonlinear and time-varying characteristics of the plant are considered, and the system
Precise Spectral Representation of Speech Signal Based on Time-Varying Sinusoidal Modeling
"... Abstract — The efficient encoding of the harmonic spectral envelope is an essential task in parametric speech coders. Sinusoidal modeling (SM) has been widely utilized in low rate parametric speech coders. This study proposes a spectral estimation algorithm, which is based on a time-varying sinusoid ..."
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sinusoidal model (TSM), to retrieve the spectral amplitudes of voiced frames. The proposed TSM spectral estimator provides precise estimation of spectral amplitudes and refines the fractional pitch lag of speech signals with time-varying characteristics. Compared to the traditional SM approaches, it is shown
Results 1 - 10
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