Results 11 to 20 of about 49,795 (169)
An analysis of the acoustic input impedance of the ear. [PDF]
J Assoc Res Otolaryngol, 2013 Ear canal acoustics was examined using a one-dimensional lossy transmission line with a distributed load impedance to model the ear. The acoustic input impedance of the ear was derived from sound pressure measurements in the ear canal of healthy human ears. A nonlinear least squares fit of the model to data generated estimates for ear canal radius, ear
Withnell RH, Gowdy LE.
europepmc +4 more sources
High-Input Impedance Voltage-Mode Multifunction Filter
Applied Sciences, 2021 This paper proposes a high-input impedance voltage-mode (VM) multifunction biquad filter which employs three current-feedback amplifiers (CFAs), three resistors, and two grounded capacitors.
San-Fu Wang +3 more
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Input Impedance of the Systemic Circulation [PDF]
Circulation Research, 1967 The hydraulic load presented to the left ventricle by the systemic circulation was characterized by expressing pressure-flow relationships in the ascending aorta as input impedance. This was determined by spectral or Fourier analysis of simultaneously recorded pressure and flow waves in 1 unanesthetized and 27 anesthetized dogs.
M F, O'Rourke, M G, Taylor
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Method of determination of the railway rolling stock coordinates within the track circuit
Transport Technologies, 2023 This work aims to solve one of the essential problems in railway transport – control over the position of moving units within the race. A method of constant monitoring of the track circuit with a determination of the coordinate of the train shunt ...
Oleh Voznyak, Serhii Buriak
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A folded monopole antenna with variable input impedance by connecting additional elements
IET Microwaves, Antennas & Propagation, 2021 A folded monopole antenna (FMA) with two different input impedances were investigated to develop an antenna that is robust to metal for applications in a space enclosed by metal objects.
Yuta Nakagawa +3 more
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IEEE Access, 2020 In integrated circuit form, the front-end amplifier (FEA) determines the fidelity of the biosignal detection, signal-to-noise ratio, power consumption and detector size for the future multi-channel neural signal recording systems and applications ...
Zhijun Zhou
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Preparation and electromagnetic absorbing properties of TiC/Ni powders
Xi'an Gongcheng Daxue xuebao, 2022 In order to improve the microwave absorption performance of TiC powder, TiC/Ni composite powder was prepared by coating nickel particles with mass fraction of 10%, 20% and 30% on the surface of TiC by typical coarsening and sensitizing electroless nickel
ZHANG Sen +4 more
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Sensors, 2023 To improve the accuracy of shallow neural networks in processing complex signals and cable fault diagnosis, and to overcome the shortage of manual dependency and cable fault feature extraction, a deep learning method is introduced, and a time−frequency ...
Qingzhu Wan +4 more
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Applied Sciences, 2019 This paper proposes a new high-input impedance current feedback operational amplifier (CFOA)- based voltage-mode multifunction biquadratic filter and a voltage-mode quadrature oscillator using the proposed high-input impedance CFOA-based biquadratic ...
San-Fu Wang +3 more
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IEEE Access, 2021 The main objective of this work is to investigate the combinatory effects of both uniaxial magnetic and electrical anisotropies on the input impedance, resonant length and the mutual coupling between two dipoles printed on an anisotropic grounded ...
Mohamed Lamine Bouknia +8 more
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