Three-dimensional sparse electromagnetic imaging accelerated by projected steepest descent

2016 ◽  
Author(s):  
Abdulla Desmal ◽  
Hakan Bagci
Keyword(s):  
Three Dimensional ◽  
Steepest Descent ◽  
Electromagnetic Imaging

Three-dimensional electromagnetic imaging of dielectric scatterers

1996 ◽  
Vol 10 (7) ◽  
pp. 955-972
Author(s):  
P. Chaturvedi ◽  
R.G. Plumb ◽  
Z. Huang ◽  
K.R. Demarest
Keyword(s):  
Three Dimensional ◽  
Electromagnetic Imaging

Three dimensional radio-frequency electromagnetic imaging of an in-bin grain conditioning process

2019 ◽  
Vol 167 ◽  
pp. 105059 ◽  
Author(s):  
Colin Gilmore ◽  
Mohammad Asefi ◽  
Kyle Nemez ◽  
Jitendra Paliwal ◽  
Joe LoVetri
Keyword(s):  
Radio Frequency ◽  
Three Dimensional ◽  
Electromagnetic Imaging ◽  
Conditioning Process

ON THE GRAVITATIONAL CHERN–SIMONS ACTION AS ENTROPY FUNCTIONAL FOR THREE-MANIFOLDS

2014 ◽  
Vol 23 (01) ◽  
pp. 1450007
Author(s):  
R. CARTAS-FUENTEVILLA
Keyword(s):  
Three Dimensional ◽  
Steepest Descent ◽  
Entropy Functional ◽  
Chern Simons

We determine the more general geometrical flow in the space of metrics corresponding to the steepest descent for the three-dimensional gravitational Chern–Simons action, extending the results considered recently by Özgür Kisisel et al. [Class. Quantum Grav.25 (2008) 165019].

MUSIC‐Type Electromagnetic Imaging of a Collection of Small Three‐Dimensional Inclusions

2007 ◽  
Vol 29 (2) ◽  
pp. 674-709 ◽  
Author(s):  
Habib Ammari ◽  
Ekaterina Iakovleva ◽  
Dominique Lesselier ◽  
Gaële Perrusson
Keyword(s):  
Three Dimensional ◽  
Electromagnetic Imaging

Asymptotic evaluation of three-dimensional wave packets in parallel flows

1991 ◽  
Vol 226 ◽  
pp. 573-590 ◽  
Author(s):  
Feng Jiang
Keyword(s):  
Saddle Point ◽  
Analytic Continuation ◽  
Wave Packets ◽  
Three Dimensional ◽  
Steepest Descent ◽  
Wake Flow ◽  
Two Dimensional ◽  
Asymptotic Evaluation ◽  
Method Of Steepest Descent ◽  
Dimensional Wave

This paper examines the three-dimensional wave packets which are generated by an initially localized pulse disturbance in an incompressible parallel flow and described by a double Fourier integral in the wavenumber space. It aims to clear up some confusion arising from the asymptotic evaluation of this integral by the method of steepest descent. In this asymptotic analysis, the calculation of the eigenvalues can be facilitated by making use of the Squire transformation. It is demonstrated that the use of the Squire transformation introduces branch points in the saddle-point equation that links the physical coordinates to the saddle-point value, regardless of whether the flow is viscous or inviscid. It is shown that the correct branch should be chosen according to the principle of analytic continuation. The saddle-point values for the three-dimensional problem should be considered to be the analytic continuation of those for the two-dimensional case where the saddle-point values can be uniquely determined. The three-dimensional wave packets in an inviscid wake flow are examined; their behaviour at large time is calculated asymptotically by the method of steepest descent in terms of the two-dimensional eigenvalue relation.

Inadequacy of colonoscopy revealed by three-dimensional electromagnetic imaging

2001 ◽  
Vol 44 (7) ◽  
pp. 978-983 ◽  
Author(s):  
I. J. Adam ◽  
Z. Ali ◽  
A. J. Shorthouse
Keyword(s):  
Three Dimensional ◽  
Electromagnetic Imaging

scholarly journals Three-dimensional electromagnetic imaging of upwelling fluids in the Kyushu subduction zone, Japan

2015 ◽  
Vol 120 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Maki Hata ◽  
Naoto Oshiman ◽  
Ryokei Yoshimura ◽  
Yoshikazu Tanaka ◽  
Makoto Uyeshima
Keyword(s):  
Subduction Zone ◽  
Three Dimensional ◽  
Electromagnetic Imaging

Three-Dimensional Kinematic Synthesis

1968 ◽  
Vol 90 (3) ◽  
pp. 481-484 ◽  
Author(s):  
H. G. Tull ◽  
D. W. Lewis
Keyword(s):  
Local Minimum ◽  
Three Dimensional ◽  
Descent Method ◽  
Steepest Descent ◽  
Steepest Descent Method ◽  
Kinematic Synthesis ◽  
Space Curves ◽  
Synthesis Technique ◽  
Arbitrary Reference ◽  
Arbitrary Space

A synthesis technique applicable to the three-dimensional mechanisms of the RRGG type to generate specified arbitrary space curves is presented. Specified points which define the curve are to be “occupied” at specific crank rotation with respect to an arbitrary reference angle. Synthesis is by use of new steepest descent method converging from any starting approximation (even very poor ones) to a local minimum of the sum of the squares of the errors.

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