Results 231 to 240 of about 503,581 (280)

Wideband holography based spherical equivalent source method with rigid spherical arrays

Mechanical Systems and Signal Processing, 2018
Abstract Spherical equivalent source method (S-ESM) with rigid spherical arrays is able to achieve good sound field reconstruction and acoustic source identification in three-dimensional free-field spaces. However, the S-ESM solved by the standard Tikhonov regularization is restricted to the low-frequency reconstruction and source identification at ...
Guoli Ping, Zhigang Chu, Zhongming Xu
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Equivalent circuit for spherical planar-ferrite resonators

Proceedings of the IEEE, 1969
An equivalent circuit has been derived that enables prediction of the microwave behavior of spherical, planar-ferrite resonators.
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Equivalent spherical harmonics

International Journal of Quantum Chemistry, 1977
AbstractIt is known that the 2l+1 spherical harmonics Ylm can be transformed into cyclically equivalent orbitals, of which only a few examples have so far been given explicitly. In this article the totality of such cyclic sets is derived.It is demonstrated that other kinds of equivalent spherical harmonics do not exist.Finally a set of five equivalent ...
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Equivalence of Some Generalizations on the Spherical Model

Journal of Mathematical Physics, 1970
We define n-spherical models as follows: (1) Divide a lattice of N points into n mutually exclusive subsets with N1, ⋯, Nn points, respectively; ΣNα = N. With each lattice point j, associate a variable εj, and impose the restrictions ∑εj2=Nα,α=1,⋯,n; the sums are over the sites of the αth subset. (2) Adopt the energy expression for the Ising model with
G. V. Bettoney, R. M. Mazo
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Equivalence Bimodule between Spherical Noncommutative Tori

Acta Mathematica Sinica, English Series, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Equivalent reinforcement of a spherical bottom with a radial nozzle

Soviet Applied Mechanics, 1971
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Meaning And Application of the Spherical Equivalent

Clinical and Experimental Optometry, 1954
SUMMARY The spherical equivalent is the spherical lens which places any astigmatic eye in a condition of meridional balance. That is, it changes the astigmatism into equally-mixed astigmatism and produces retinal images made up of diffusion circles. It is often desirable to modify the full Rx as a first prescription, and the best modification is to ...
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Circuit equivalent to the elastic spherical shell

Applied Physics Letters, 1984
The pulsating elastic spherical shell is investigated in detail. A possible equivalent circuit is shown to contain two capacitors, two inductors, a transmission line, and an ideal transformer.
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Hierarchical equivalent source algorithm based on relaxed spherical equivalence surface

2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015
A new hierarchical algorithm based on surface equivalence principle is proposed in this work. The equivalent sources residing on relaxed spherical equivalence surfaces are computed by closed-form integral operators rather than numerical approximations. Consequently, a hierarchical algorithm based on oct-tree is straightforward to implement.
Jiang, L, Fu, X, Ewe, HT
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A spherical dose equivalent neutron detector

Nuclear Instruments and Methods, 1966
Abstract A spherical neutron detector has been designed which is a development of the Andersson and Braun counter, but which weighs only 5 kg. The detector comprises a double polythene moderator system, with a LiI(Eu) crystal at the centre, which is viewed by a photomultiplier. The neutron energy response of the detector matches the recommendation of
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