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Second Order Darboux Displacements [PDF]

open access: yesJournal of Physics A: Mathematical and General, 2003
The potentials for a one dimensional Schroedinger equation that are displaced along the x axis under second order Darboux transformations, called 2-SUSY invariant, are characterized in terms of a differential-difference equation.
B F Samsonov   +21 more
core   +2 more sources

Second-order Democratic Aggregation [PDF]

open access: yes, 2018
Aggregated second-order features extracted from deep convolutional networks have been shown to be effective for texture generation, fine-grained recognition, material classification, and scene understanding.
A Cherian   +19 more
core   +2 more sources

Second order Standard Model

open access: yesNuclear Physics B, 2015
It is known, though not commonly, that one can describe fermions using a second order in derivatives Lagrangian instead of the first order Dirac one.
Johnny Espin, Kirill Krasnov
doaj   +4 more sources

Second Order Gravitational Self-Force [PDF]

open access: yesPhysical Review Letters, 2012
The second-order gravitational self-force on a small body is an important problem for gravitational-wave astronomy of extreme mass-ratio inspirals. We give a first-principles derivation of a prescription for computing the first and second perturbed ...
E. Poisson   +3 more
core   +4 more sources

Second order invariants and holography [PDF]

open access: yesInternational Journal of Modern Physics D, 2011
Motivated by recent works on the role of the Holographic principle in cosmology, we relate a class of second order Ricci invariants to the IR cutoff characterizing the holographic Dark Energy density.
Bonanno, Luca   +2 more
core   +3 more sources

Second-Order Footsteps Illusions

open access: yesi-Perception, 2015
In the “footsteps illusion”, light and dark squares travel at constant speed across black and white stripes. The squares appear to move faster and slower as their contrast against the stripes varies.
Akiyoshi Kitaoka, Stuart Anstis
doaj   +3 more sources

Second-order DE algorithm

open access: yesCAAI Transactions on Intelligence Technology, 2019
Differential evolution (DE) is a robust, efficient and simple evolutionary algorithm for various optimisation and engineering problems. It has several outstanding features such as low time complexity, ease to use and robust steadiness.
Xinchao Zhao   +3 more
doaj   +2 more sources

Effect of second harmonic and second‐order intermodulation on third‐order passive intermodulation

open access: yesIET Microwaves, Antennas & Propagation, 2021
Third‐order intermodulation (IM3) is considered as a typical metric to evaluate passive intermodulation (PIM) in electrical connectors, which may be affected by the second‐order effect in the circuit with cascaded non‐linearities.
Qiuyan Jin, Quanyuan Feng
doaj   +1 more source

Second-Order Finite Automata [PDF]

open access: yesTheory of Computing Systems, 2020
AbstractTraditionally, finite automata theory has been used as a framework for the representation of possibly infinite sets of strings. In this work, we introduce the notion of second-order finite automata, a formalism that combines finite automata with ordered decision diagrams, with the aim of representing possibly infinitesets of setsof strings. Our
Alexsander A. de Melo   +1 more
openaire   +5 more sources

Second-Order Reversed Phi [PDF]

open access: yesPerception & Psychophysics, 1999
Abstract A second-order reversed-phi stimulus is composed of moving features (areas filled with texture) whose overall amount of texture-contrast is reversed between successive frames. In peripheral vision, the stimulus is perceived as moving in the reversed direction (opposite to the feature displacement).
Z L, Lu, G, Sperling
openaire   +2 more sources

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