Results 1 to 10 of about 12,924,254 (307)

Optimization of Stop Plan for Skip-Stop Operation on Suburban Railway Line

open access: yesApplied Sciences, 2021
A combination of express and local trains (E/L mode) is generally used to operate a suburban rail service, it can meet the rapid and direct service needs of long-distance travelers as well the needs of short-distance travelers.
Jun Xu   +3 more
doaj   +1 more source

Modulation behaviour and possible existence criterion of geodesic acoustic modes in tokamak devices

open access: yesNuclear Fusion, 2023
Geodesic acoustic modes (GAMs) represent the oscillating counterpart of zonal flow in tokamak plasma and can affect transport due to their interaction with turbulence eddies.
F. Palermo   +3 more
doaj   +1 more source

Overview of initial negative triangularity plasma studies on the ASDEX Upgrade tokamak

open access: yesNuclear Fusion, 2022
An overview of results of negative triangularity (NT) studies from the ASDEX Upgrade tokamak (AUG) is given. Moderate values of the triangularity in the range of δ _average ≈ −0.2 have been obtained.
T. Happel   +8 more
doaj   +1 more source

Smooth Bend Structures Using Hybrid Compensation for Common-Mode Noise Reduction

open access: yesApplied Sciences, 2022
The proposed smooth bend structure was implemented with a 150-degree bend to reduce the asymmetrical part of the differential bend and thus prevent mode conversion loss and common-mode noise.
Ding-Bing Lin   +2 more
doaj   +1 more source

L₁/L₂-Mode Switching Adaptive Filter Algorithm Based on Novel Mean Square Deviation Analysis

open access: yesIEEE Access, 2020
This paper proposes an L1/L2-mode switching adaptive filter algorithm by comparing the performances in L1 and L2 modes. In the L1 or L2 mode, the proposed algorithm adopts, as the update equation, that of the normalized sign (NS) algorithm or that of the
Minho Lee   +3 more
doaj   +1 more source

Mode Conversion Behavior of Guided Wave in a Pipe Inspection System Based on a Long Waveguide

open access: yesSensors, 2016
To make clear the mode conversion behavior of S0-mode lamb wave and SH0-plate wave converting to the longitudinal mode guided wave and torsional mode guided wave in a pipe, respectively, the experiments were performed based on a previous built pipe ...
Feiran Sun   +4 more
doaj   +1 more source

Scattering of guided waves propagating through pipe bends based on normal mode expansion

open access: yesScientific Reports, 2022
The scattering of guided waves propagating through pipe bends is studied by means of normal mode expansion. First, the bi-orthogonality relationship for normal modes in pipe bends is derived, based on which the displacement and stress fields at the ...
Wenjun Wu, Hao Dong, Shangyu Zhang
doaj   +1 more source

The bimodality of the East Siberian fast ice extent: mechanisms and changes

open access: yesAnnals of Glaciology, 2023
Using operational sea-ice maps, we provide first insight into the seasonal evolution of fast ice in the East Siberian Sea for the period between 1999 and 2021.
Valeria Selyuzhenok   +4 more
doaj   +1 more source

Differential impact of multi-focus fan beam collimation with L-mode and conventional systems on the accuracy of myocardial perfusion imaging: Quantitative evaluation using phantoms [PDF]

open access: yesAsia Oceania Journal of Nuclear Medicine and Biology, 2013
Introduction: A novel IQ-SPECTTM method has become widely used in clinical studies. The present study compares the quality of myocardial perfusion images (MPI) acquired using the IQ-SPECTTM (IQ-mode),conventional (180° apart: C-mode) and L-mode (90 ...
Tatsunori Saho   +4 more
doaj   +2 more sources

Excitation and Propagation of Longitudinal L (0, 2) Mode Ultrasonic Guided Waves for the Detection of Damages in Hexagonal Pipes: Numerical and Experimental Studies

open access: yesShock and Vibration, 2021
The hexagonal pipe is a special kind of tube structure. Its inner surface of the cross section is in the shape of circle, while the outer surface is hexagonal.
Xiang Wan   +7 more
doaj   +1 more source

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