Results 131 to 140 of about 29,133 (164)

Estimation of standard error of impedance‐estimated frost resistance

Scandinavian Journal of Forest Research, 1989
The magnitude of measurement errors of the specific impedance difference was estimated and a formula to approximate the variance of the estimated frost resistance was derived. The measurements of specific impedance difference include the measurement errors of impedance before and after frost treatment and cross-sectional area.
Tapani Repo, Juha Lappi
openaire   +1 more source

Parametric Magnetotelluric Impedance Tensor Estimation

IEEE Transactions on Geoscience and Remote Sensing, 2022
Xinyi Xu, Mark D. Butala
openaire   +1 more source

Estimating Surface Acoustic Impedance With the Inverse Method

International Journal of Occupational Safety and Ergonomics, 2011
Sound field parameters are predicted with numerical methods in sound control systems, in acoustic designs of building and in sound field simulations. Those methods define the acoustic properties of surfaces, such as sound absorption coefficients or acoustic impedance, to determine boundary conditions.
openaire   +2 more sources

Time-domain estimation of MT impedance tensor

Geophysics, 1994
Abstract The spectral analysis of magnetotelluric (MT) data for impedance tensor estimation requires the stationarity of measured magnetic (H) and electric (E) fields. However, it is well known that noise biases time-domain tensor estimates obtained via an iterative search by a descent algorithm to determine the least-mean-square ...
openaire   +2 more sources

An Online Event-Based Grid Impedance Estimation Technique Using Grid-Connected Inverters

IEEE Transactions on Power Electronics, 2021
Tamás Kerekes, Nabil Mohammed, Mihai Ciobotaru   +2 more
exaly  

Electrochemical Impedance Spectroscopy Based on the State of Health Estimation for Lithium-Ion Batteries

Energies, 2022
, Licheng Wang, Wang Licheng
exaly  

Communication-Free Equivalent Grid Impedance Estimation Technique for Multi-Inverter Systems

IEEE Transactions on Industrial Electronics, 2023
Tamás Kerekes, Nabil Mohammed, Mihai Ciobotaru   +2 more
exaly  

Electrochemical Impedance Spectroscopy: A New Chapter in the Fast and Accurate Estimation of the State of Health for Lithium-Ion Batteries

Energies, 2023
, Wang Licheng
exaly  

Impedance Catheter Volume Estimation

Journal of Clinical Engineering, 1993
JAMES W. DAVIS, CLARENCE H. OWEN, THEO C. PILKINGTON   +2 more
openaire   +1 more source

Distribution grid impedance & topology estimation with limited or no micro-PMUs

International Journal of Electrical Power and Energy Systems, 2021
Yizheng Liao, Yang Weng
exaly