Results 231 to 240 of about 7,478 (247)
Some of the next articles are maybe not open access.
Image buildup for the rectangular waveguide tensor Green's function
IEEE Transactions on Antennas and Propagation, 1984Tensor Green's functions, of both electric and magnetic type, are produced for the rectangular waveguide through summation of a doubly infinite series of free-space contributions obtained from endless imaging across (perfectly conducting) guide walls. The requisite summation is facilitated by resorting to a Fourier integral representation for the basic
exaly +2 more sources
Computers and Geosciences, 1992
Abstract A FORTRAN program is described that calculates the gravitational field and the gravity gradient tensor resulting from a system of right rectangular prisms which can be ordered into a threedimensional (3-D) model. The gravitational field and gravity gradient tensors can be calculated on a grid on or above the model's surface. The algorithm is
Kevin L. Mickus
exaly +2 more sources
Abstract A FORTRAN program is described that calculates the gravitational field and the gravity gradient tensor resulting from a system of right rectangular prisms which can be ordered into a threedimensional (3-D) model. The gravitational field and gravity gradient tensors can be calculated on a grid on or above the model's surface. The algorithm is
Kevin L. Mickus
exaly +2 more sources
2016 URSI International Symposium on Electromagnetic Theory (EMTS), 2016
This work is devoted to the solution of the inverse problem of reconstructing electromagnetic characteristics of anisotropic parallel-plane dielectric diaphragms. We consider a one-sectional diaphragm in a rectangular waveguide filled with anisotropic media having a diagonal permittivity and permeability tensors and propose a method of reconstructing ...
Yury Smirnov +2 more
exaly +2 more sources
This work is devoted to the solution of the inverse problem of reconstructing electromagnetic characteristics of anisotropic parallel-plane dielectric diaphragms. We consider a one-sectional diaphragm in a rectangular waveguide filled with anisotropic media having a diagonal permittivity and permeability tensors and propose a method of reconstructing ...
Yury Smirnov +2 more
exaly +2 more sources
l k,s-Singular values and spectral radius of partially symmetric rectangular tensors
Frontiers of Mathematics in China, 2015zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hongmei Yao, Changjiang Bu
exaly +3 more sources
2016 Progress in Electromagnetic Research Symposium (PIERS), 2016
A numerical-analytical method is developed for reconstructing tensor permittivity and permeability of a dielectric diaphragm in a rectangular waveguide. The techniques and obtained solutions can be implemented in practical measurements for the investigation of new artificial materials and media and can be applied in optics, nanotechnology, and design ...
Yury Smirnov, Ekaterina Derevyanchuk
exaly +2 more sources
A numerical-analytical method is developed for reconstructing tensor permittivity and permeability of a dielectric diaphragm in a rectangular waveguide. The techniques and obtained solutions can be implemented in practical measurements for the investigation of new artificial materials and media and can be applied in optics, nanotechnology, and design ...
Yury Smirnov, Ekaterina Derevyanchuk
exaly +2 more sources
IMA Journal of Numerical Analysis, 2001
The authors study the stability and convergence properties of the streamline-diffusion finite element method (SDFEM) discretization for nonconforming elements on tensor-product rectangular meshes. The analysis in this paper shows that no jump terms are needed to stabilize the method as propsed in earlier works dealing with nonconformal elements ...
Stynes, Martin, Tobiska, Lutz
openaire +2 more sources
The authors study the stability and convergence properties of the streamline-diffusion finite element method (SDFEM) discretization for nonconforming elements on tensor-product rectangular meshes. The analysis in this paper shows that no jump terms are needed to stabilize the method as propsed in earlier works dealing with nonconformal elements ...
Stynes, Martin, Tobiska, Lutz
openaire +2 more sources
Two new singular value inclusion sets for rectangular tensors
Linear and Multilinear Algebra, 2018ABSTRACTLet A be a real (p,q)th order m×n dimensional rectangular tensor. A new singular value inclusion set for rectangular tensors with m=n is given and proved to be tighter than those in [Zhao J...
openaire +1 more source
Optics Communications, 1996
Abstract The eigenvalue equation of anisotropic rectangular dielectric waveguides with diagonal index tensors is decomposed into a pair of scalar wave equations coupled only because of anisotropy. We solve the approximate, uncoupled equations by variational analysis and handle the coupling term as a first-order perturbation. We prove the stationarity
Miklós Barabás +3 more
openaire +1 more source
Abstract The eigenvalue equation of anisotropic rectangular dielectric waveguides with diagonal index tensors is decomposed into a pair of scalar wave equations coupled only because of anisotropy. We solve the approximate, uncoupled equations by variational analysis and handle the coupling term as a first-order perturbation. We prove the stationarity
Miklós Barabás +3 more
openaire +1 more source
2018 4th Annual International Conference on Network and Information Systems for Computers (ICNISC), 2018
In the field of direction of arrival (DOA) estimation, there exists no problem of angle merging and it has low sidelobe characteristics with the uniform rectangular array. But when sensors in the uniform rectangular array are partially damaged, the two-dimensional DOA estimation performance of the original algorithms will seriously decline, and even ...
Chao Ge +4 more
exaly +2 more sources
In the field of direction of arrival (DOA) estimation, there exists no problem of angle merging and it has low sidelobe characteristics with the uniform rectangular array. But when sensors in the uniform rectangular array are partially damaged, the two-dimensional DOA estimation performance of the original algorithms will seriously decline, and even ...
Chao Ge +4 more
exaly +2 more sources
The Measurement of Complex Permittivity Tensor by Standing-Wave Method in Rectangular Waveguide
1986 IEEE International Symposium on Electromagnetic Compatibility, 1986Osamu Hashimoto, Yasutaka Shimizu
openaire +1 more source