Results 21 to 30 of about 20,794,413 (306)

Variable Scale Aperture Sampling Reception Method for Multiple Orbital Angular Momentum Modes Vortex Wave

open access: yesIEEE Access, 2019
In this paper, we propose a kind of variable scale aperture sampling reception (VSASR) method for multiple orbital angular momentum (OAM) modes vortex wave reception and demodulation.
Qiang Feng, Jun Liang, Long Li
doaj   +1 more source

Analysing and correcting the differences between multi-source and multi-scale spatial remote sensing observations. [PDF]

open access: yesPLoS ONE, 2014
Differences exist among analysis results of agriculture monitoring and crop production based on remote sensing observations, which are obtained at different spatial scales from multiple remote sensors in same time period, and processed by same algorithms,
Yingying Dong   +6 more
doaj   +1 more source

SUMMIT (Serially Unified Multicenter Multiple Sclerosis Investigation): creating a repository of deeply phenotyped contemporary multiple sclerosis cohorts. [PDF]

open access: yes, 2018
BackgroundThere is a pressing need for robust longitudinal cohort studies in the modern treatment era of multiple sclerosis.ObjectiveBuild a multiple sclerosis (MS) cohort repository to capture the variability of disability accumulation, as well as ...
Uitdehaag, Bernard M.J.   +18 more
core   +1 more source

Research on Scattering Feature Extraction of Underwater Moving Cluster Targets Based on the Highlight Model [PDF]

open access: yesArchives of Acoustics, 2023
In detecting cluster targets in ports or near-shore waters, the echo amplitude is seriously disturbed by interface reverberation, which leads to the distortion of the traditional target intensity characteristics, and the appearance of multiple targets in
Yang Yang, Jun Fan, Bin Wang
doaj   +1 more source

A note on the method of multiple scales [PDF]

open access: yesQuarterly of Applied Mathematics, 1980
A modification of the method of multiple scales makes use of the expansion of parameters of the system in order to remove undesirable characteristics of the solution obtained by the usual multiple-scale method. When applied to the damped harmonic oscillator, the modification leads to the exact solution.
openaire   +1 more source

Multiple sequence alignment with the Divide-and-Conquer method. [PDF]

open access: yes, 1998
Stoye J. Multiple sequence alignment with the Divide-and-Conquer method. Gene. 1998;211(2):GC45-GC56.An improved algorithm for the simultaneous alignment of multiple protein and nucleic acid sequences, the Divide-and-Conquer Alignment procedure (DCA), is
Jens Stoye   +1 more
core   +1 more source

Experience of Identity Change in People Who Reported a Diagnosis of Multiple Sclerosis : A Qualitative Inquiry [PDF]

open access: yes, 2019
Background: A diagnosis of multiple sclerosis (MS) can lead to changes to a person’s sense of self. The aim of this study was to investigate the subjective experience of identity change and subsequent adjustment to MS.
das Nair, Roshan   +13 more
core   +1 more source

Analytical Study of Nonlinear Flexural Vibration of a Beam with Geometric, Material and Combined Nonlinearities

open access: yesVibration
This article explores the nonlinear vibration of beams with different types of nonlinearities. The beam vibration was modeled using Hamilton’s principle, and the equation of motion was solved using method of multiple time scales.
Yoganandh Madhuranthakam   +1 more
doaj   +1 more source

Locally periodic unfolding method and two-scale convergence on surfaces of locally periodic microstructures [PDF]

open access: yes, 2015
In this paper we generalize the periodic unfolding method and the notion of two-scale convergence on surfaces of periodic microstructures to locally-periodic situations.
Ptashnyk, Mariya   +2 more
core   +1 more source

Numerical methods for stochastic partial differential equations with multiple scales [PDF]

open access: yesJournal of Computational Physics, 2012
30 pages, 5 figures, submitted to J.
Assyr Abdulle, Grigorios A. Pavliotis
openaire   +3 more sources

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