Results 21 to 30 of about 1,253,527 (227)

Active plasmonic devices and optical metamaterials [PDF]

open access: yes, 2009
We studied active near-infrared metamaterials based on phase transition of vanadium oxide thin films, asymmetrically coupled split-ring resonators for narrowing resonance line-widths , field effect modulation of plasmon propagation and 3D single layer ...
Atwater, Harry A.   +8 more
core   +1 more source

Evaluation of F wave and split hand index in patients with amyotrophic lateral sclerosis

open access: yesThe Egyptian Journal of Neurology, Psychiatry and Neurosurgery, 2020
Background Amyotrophic lateral sclerosis (ALS) is characterized by gradual disturbance of both upper and lower motor neurons (LMN). In ALS, muscle wasting favors the abductor pollicis brevis (APB) and first dorsal interosseous (FDI), with relative ...
Noor H. Mohammed   +2 more
doaj   +1 more source

Terahertz 3D bulk metamaterials with randomly dispersed split-ring resonators

open access: yesNanophotonics, 2022
While optical systems using terahertz wave are expected to achieve beneficial applications, at present, the materials of the optical elements that compose them must be selected from limited choices.
Okatani Taiyu   +3 more
doaj   +1 more source

Numerical simulations of negative-index refraction in wedge-shaped metamaterials [PDF]

open access: yes, 2005
A wedge-shaped structure made of split-ring resonators (SRR) and wires is numerically simulated to evaluate its refraction behavior. Four frequency bands, namely, the stop band, left-handed band, ultralow-index band, and positive-index band, are ...
H. Liu   +5 more
core   +1 more source

Generalized Index-Set Splitting [PDF]

open access: yes, 2005
This paper introduces Index-Set Splitting (ISS), a technique that splits a loop containing several conditional statements into several loops with less complex control flow. Contrary to the classic loop unswitching technique, ISS splits loops when the conditional is loop variant.
Christopher Barton   +3 more
openaire   +1 more source

Splitting of the family index

open access: yesCommunications in Mathematical Physics, 1996
The authors prove a splitting formula for a family of Dirac operators acting on a closed manifold. More precisely, let \(Z\) be splitted by a closed hypersurface \(Y\) (which may vary with the parameter \(b\in B\)) into two pieces \(Z_1\) and \(Z_2\), and let \(P_1\) and \(P_2\) be two spectral sections over \(Y\) encoding the respective boundary ...
Dai, Xianzhe, Zhang, Weiping
openaire   +2 more sources

A hierarchical time-splitting approach for solving finite-time optimal control problems [PDF]

open access: yes, 2013
We present a hierarchical computation approach for solving finite-time optimal control problems using operator splitting methods. The first split is performed over the time index and leads to as many subproblems as the length of the prediction horizon ...
Keviczky, Tamás   +2 more
core   +2 more sources

Index-range monotonicity and index-proper splittings of matrices

open access: yesNumerical Algebra, Control & Optimization, 2013
Index-range monotonicity is proposed, and some characterizations of this notion are obtained. Then different convergence and comparison theorems are presented using several new subclasses of index-proper splittings.
Litismita Jena, Sabyasachi Pani
openaire   +1 more source

Exploring the split hand phenomenon with the neurophysiological index

open access: yesNeurophysiologie Clinique, 2023
In 164 subjects of different age groups, we studied the neurophysiological index (NI) ([CMAP amplitude/Distal motor latency] *[F-wave frequency]; CMAP=compound muscle action potential) for three hand muscles (APB= abductor pollicis brevis; FDI= first dorsal interosseous; ADM= abductor digiti minimi). A split hand index based on CMAP amplitude (SHI_CMAP)
Santos Silva, Cláudia   +2 more
openaire   +3 more sources

Central extensions of null-filiform and naturally graded filiform non-Lie Leibniz algebras [PDF]

open access: yes, 2017
In this paper we describe central extensions of some nilpotent Leibniz algebras. Namely, central extensions of the Leibniz algebra with maximal index of nilpotency are classified.
Adashev, J.K.   +2 more
core   +1 more source

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