Results 241 to 250 of about 601,437 (304)
An Optimized 3D-Printed Meta-Matching Layer To Enhance Transmission Through Calcified Plaques
Ghanbarzadeh-Daghyean A +4 more
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
On the geometric sequences of reflection coefficients
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1990It is shown that a decaying geometric sequence of reflection coefficients corresponds to a predictor polynomial that has all of its roots on a circle centered at the origin of the complex z plane. It is shown that the radius of this circle is equal to the magnitude of the ratio of any two consecutive terms in the geometric sequence. >
David S. Mazel +2 more
openaire +1 more source
Subsets of reflection coefficients
ICASSP '86. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005Subset models of autoregressive reflection coefficients have a number of non-zero reflections in the subset while the other reflections are zero. Speech analysis and seismic exploration are areas of applications where true subset processes may be found.
openaire +1 more source
Invariants of the Reflection Coefficient
Optics and Spectroscopy, 2020The reflection coefficient of a plane monochromatic wave from a three-layer structure is analyzed in detail in the case in which the wave is linearly polarized in the plane of incidence. The inverse ellipsometry problem for a three-layer structure is solved.
L. A. Fedyukhin +2 more
openaire +1 more source
A reflection coefficient bridge
IEEE Transactions on Instrumentation and Measurement, 1987The design of an unbalanced Wheatstone bridge is presented. The bridge measures the reflection coefficient of unknown impedances relative to an arbitrary reference level. A experimental unit was designed for a 25-Ω reference level. It measured high isolation with a 25-Ω load; the magnitude of the reflection coefficient with a short-circuit load ...
openaire +1 more source
The Reflection Coefficient of Mercury
Journal of Applied Physics, 1938Two new methods for measuring the reflection coefficient of mercury atoms from a mercury surface are described. In the first, a micromanometer gives both the change in pressure on the surface, and the subsequent rate of evaporation, when a mercury pool is exposed to an opposing liquid air cooled condensing target.
openaire +1 more source
Regression surfaces for estimated reflection coefficients
ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing, 2003The distributions of the estimates of reflection coefficients depart considerably from normality, even using moderately long data records. As a result of this, the interdependencies among those estimates are nonlinear. The authors examine the nature of those nonlinear relationships by studying the regression surfaces of the estimated reflection ...
Mariano García Otero +1 more
openaire +1 more source
Reflection and Transmission Coefficients for a Diffused Interface
Applied Optics, 1968The reflection and transmission coefficients for an inhomogeneous layer separating two semiinfinite homogeneous media are examined. Two different cases are investigated, each with a different permittivity profile for the inhomogeneous layer. Detailed examination of these coefficients reveals the relation of their magnitude and phase to the wavelength ...
J, Nemec, G, Tyras
openaire +2 more sources
Measuring the reflection coefficient for ultrasonic interfaces
Ultrasonics, 1972Abstract The lack of quantitative information about the properties of the tissue interface is one shortcoming in imaging biological structures with the echo-ranging ultrasonic technique. A multitransducer configuration offers a method for experimentally evaluating a reflection coefficient for arbitrarily oriented interfaces.
openaire +2 more sources
Diffuse reflection coefficient of a stratified sea
Applied Optics, 1999A differential equation of a Riccati type for the diffuse reflection coefficient of a stratified sea is proposed. For a homogeneous sea with arbitrary inherent optical properties this equation is solved analytically. For an inhomogeneous sea it is solved approximately for any arbitrary stratification.
openaire +2 more sources