Results 11 to 20 of about 1,206,762 (335)

Quantification of Phase-Amplitude Coupling in Neuronal Oscillations: Comparison of Phase-Locking Value, Mean Vector Length, Modulation Index, and Generalized-Linear-Modeling-Cross-Frequency-Coupling

open access: yesFrontiers in Neuroscience, 2019
Phase-amplitude coupling is a promising construct to study cognitive processes in electroencephalography (EEG) and magnetencephalography (MEG). Due to the novelty of the concept, various measures are used in the literature to calculate phase-amplitude ...
Mareike J. Hülsemann   +2 more
doaj   +3 more sources

Inhomogeneous Mode-Coupling Theory and Growing Dynamic Length in Supercooled Liquids

open access: yesPhysical Review Letters, 2006
We extend Mode-Coupling Theory (MCT) to inhomogeneous situations, relevant for supercooled liquid in pores, close to a surface, or in an external field.
David R. Reichman   +4 more
core   +3 more sources

Characteristics and mechanism of coupling effects in parallel-cladded acoustic waveguides

open access: yesActa Acustica, 2022
The characteristics and mechanism of coupling effects between parallel cladded acoustic waveguides (PCAWs) are essential when considering their applications in acoustic wave control and signal processing.
Yin Guanjun   +6 more
doaj   +1 more source

Two-wavelength WDM multiplexers based on combined fiber structures

open access: yesРоссийский технологический журнал, 2021
One of the main directions in the development of optical communication systems is associated with the use of optical fiber (ОF) for data reception and transmission.
D. A. Ivanov, V. I. Nefedov
doaj   +1 more source

Calculation of the Coupling Coefficient in Step-Index Multimode Polymer Optical Fibers Based on the Far-Field Measurements

open access: yesFrontiers in Physics, 2022
Using the power flow equation (PFE), this article investigates mode coupling in step-index (SI) multimode (MM) polymer optical fiber (POF). This equation’s coupling coefficient was initially fine-tuned so that it could appropriately reconstruct ...
Svetislav Savović   +5 more
doaj   +1 more source

Mode Coupling Analysis for a Mode Selective Coupler Using the Supermode Theory

open access: yesPhotonics, 2022
In this paper, the mode selective coupler (MSC) is analyzed using the supermode theory. It is shown that all characteristic parameters of the MSC can be obtained using the propagation constants of the supermodes supported by the MSC structure. Simulation
Wenhua Ren, Fan Wang, Guobin Ren
doaj   +1 more source

An Optical Measuring Transducer for a Micro-Opto-Electro-Mechanical Micro-g Accelerometer Based on the Optical Tunneling Effect

open access: yesMicromachines, 2023
Micro-opto-electro-mechanical (MOEM) accelerometers that can measure small accelerations are attracting growing attention thanks to their considerable advantages—such as high sensitivity and immunity to electromagnetic noise—over their rivals.
Evgenii Barbin   +5 more
doaj   +1 more source

Influence of launch beam distribution on power flow and angular division multiplexing in seven-core silica optical fibers

open access: yesFrontiers in Physics, 2022
We analyze the effect of launch beam distribution on space-division multiplexing (SDM) performance in multimode multicore silica optical fibers (MM MC SOF) with seven cores.
Svetislav Savović   +6 more
doaj   +1 more source

Variable length path coupling [PDF]

open access: yesRandom Structures & Algorithms, 2007
AbstractWe present a new technique for constructing and analyzing couplings to bound the convergence rate of finite Markov chains. Our main theorem is a generalization of the path coupling theorem of Bubley and Dyer, allowing the defining partial couplings to have length determined by a random stopping time.
Thomas P. Hayes, Eric Vigoda
openaire   +1 more source

Coupled length scales in eroding landscapes [PDF]

open access: yesPhysical Review E, 2001
We report results from an empirical study of the anisotropic structure of eroding landscapes. By constructing a novel correlation function, we show quantitatively that small-scale channel-like features of landscapes are coupled to the large-scale structure of drainage basins. We show additionally that this two-scale interaction is scale-dependent.
K K, Chan, D H, Rothman
openaire   +2 more sources

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