Results 291 to 300 of about 749,140 (312)
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Coronary input impedance during cardiac cycle as determined by impulse response method
American Journal of Physiology-Heart and Circulatory Physiology, 1987The coronary arterial system was characterized by its input impedance determined in systole and diastole from impulse response functions in five dogs. The impulse response technique was verified on a known hydraulic system. A second confirmation was obtained on the circumflex artery: reflected pulses were correlated with site of reflections generated ...
G A, Van Huis, P, Sipkema, N, Westerhof
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Characterization of impedance boundary as damped harmonic oscillators via impulse reflection
The Journal of the Acoustical Society of America, 2006This paper demonstrates that various sound-absorbing/reflective materials or structures can be effectively characterized over a wide band of frequency by the sum of only a few damped harmonic oscillators. This method is physically sound in the sense that each damped harmonic oscillator corresponds to the natural resonance of the impedance boundary as ...
Fung, KY, Jing, X
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Impulse-degradation analysis of ZnO-based varistors by AC impedance measurements
Journal of Physics D: Applied Physics, 1991A new degradation analysis of ZnO-based varistors by AC impedance measurements is presented. From these measurements, which have been achieved on samples as a response to a small signal in the frequency range 10-3 to 105 Hz, at room temperature, the distribution function of the relaxation time constant has been deduced.
Ai Bui +4 more
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[Diurnal profile of impulse oscillometric impedance in healthy subjects].
Pneumologie (Stuttgart, Germany), 1997Diurnal profiles of impulse oscillometry during 24 hours in 3 hour intervals in sitting and lateral lying position have been studied in 20 healthy female and male probands 10-67 years of age. Approximating the profiles by a sine-cosine-function the amplitude of resistance was found up to 3, that of reactance up to 1 hPa/l/s in single cases, preferably ...
J, Vogel +4 more
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FACET: Force-Adaptive Control via Impedance Reference Tracking for Legged Robots
arXiv.orgReinforcement learning (RL) has made significant strides in legged robot control, enabling locomotion across diverse terrains and complex loco-manipulation capabilities.
Botian Xu +4 more
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A High-Impedance, Nanosecond Rise Time Probe for Measuring High-Voltage Impulses
IEEE Transactions on Power Apparatus and Systems, 1968Normal voltage dividers for high-voltage impulses are connected to the test object by an open air line which, when considered as part of the measuring system, gives an initially low input impedance to that measuring system due to the characteristic impedance of the line.
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International Conference on Software, Telecommunications and Computer Networks, 2016
T. Garma +3 more
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T. Garma +3 more
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