Results 51 to 60 of about 9,836,724 (331)
Autonomous division and integration of anonymous agents by using interaction between oscillators
Nihon Kikai Gakkai ronbunshu, 2017 In this paper, we proposed a system in which robot swarms autonomously divide or merge themselves according to phase gradients emerged by coupled oscillators.
Shunya YAMASHITA +2 more
doaj +1 more source
Magnetic properties of dense holographic QCD [PDF]
, 2009 We investigate the Sakai-Sugimoto model at nonzero baryon chemical potential in a background magnetic field both in the confined phase and in the deconfined phase with restored chiral symmetry. In this case the 8-brane Chern-Simons term becomes important.
Bergman, Oren +2 more
core +1 more source
Feasibility of Imaging Tissue Electrical Conductivity by Switching Field Gradients with MRI. [PDF]
, 2015 Tissue conductivity is a biophysical marker of tissue structure and physiology. Present methods of measuring tissue conductivity are limited. Electrical impedance tomography, and magnetic resonance electrical impedance tomography rely on passing external
Gibbs, Eric, Liu, Chunlei
core +2 more sources
An example in the gradient theory of phase transitions [PDF]
ESAIM: Control, Optimisation and Calculus of Variations, 2002 This paper is devoted to the asymptotic study as \(\varepsilon\rightarrow 0\) of the Ginzburg-Landau energy functional \(F_\varepsilon (u)=\int_\Omega \left(\varepsilon | \nabla^2u| ^2+\varepsilon^{-1}(1-| \nabla u| ^2)^2 \right)dx\), where \(\Omega\) is an open set in \(\mathbb R^n\).
openaire +3 more sources
Optical Forces Arising from Phase Gradients [PDF]
Physical Review Letters, 2008 We demonstrate both theoretically and experimentally that gradients in the phase of a light field exert forces on illuminated objects, including forces transverse to the direction of propagation. This effect generalizes the notion of the photon orbital angular momentum carried by helical beams of light.
Roichman, Yohai +4 more
openaire +3 more sources
Positioning and Mitigating Mining-Induced Phase Gradients for InSAR Phase Unwrapping
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingInterferometric synthetic aperture radar (SAR) has been widely used for deformation monitoring in mining areas. However, the nonlinear high-phase gradients caused by subsidence funnels are a major source of error in accurate measurements, as they present
Xin Tian, Xia Wu, Hanwen Yu, Mi Jiang
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Reconfigurable High-Efficiency metadevice using Kirigami-Inspired phase gradient metasurfaces
Results in Physics, 2023 Kirigami-inspired metasurface has attracted great attention in electromagnetic (EM) wave manipulations, due to its unprecedented and tailorable structural transformations via mechanical approaches.
Huiling Luo +6 more
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Remote SensingGeometric complexities of a fault system have a significant impact on the rupture behavior of the fault. The 2021 Mw7.4 Maduo earthquake occurred on a multi-segmented complex sinistral fault in the interior of the Bayan-Har block in the northern Tibetan ...
Xiaoli Liu +7 more
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Diffusion phase-imaging in anisotropic media using non-linear gradients for diffusion encoding.
PLoS ONE, 2023 Diffusion MRI classically uses gradient fields that vary linearly in space to encode the diffusion of water molecules in the signal magnitude by tempering its intensity.
Pamela Wochner +4 more
doaj +2 more sources
Ferroelectric phase transitions induced by a strain gradient
Physical Review Research, 2021 In perovskite oxide ferroelectrics, gradients of lattice strain are known to induce nanoscale topological structures, leading to novel or enhanced functionality.
P. Yudin +6 more
doaj +1 more source