Results 21 to 30 of about 37,521 (247)

Non-Hermitian quasilocalization and ring attractor neural networks

open access: yesPhysical Review E, 2019
Eigenmodes of a broad class of "sparse" random matrices, with interactions concentrated near the diagonal, exponentially localize in space, as initially discovered in 1957 by Anderson for quantum systems. Anderson localization plays ubiquitous roles in varieties of problems from electrons in solids to mechanical and optical systems.
Tanaka, Hidenori, Nelson, David R.
openaire   +4 more sources

Assessing site signal preservation in reference chronologies for dendro-provenancing.

open access: yesPLoS ONE, 2020
Regional differences in tree growth can be used to approximate the geographical provenance of ring-width series ('dendro-provenancing'). This method relies on cross-dated ring-width series (reference chronologies) that are thought to represent the radial
Urs Gut
doaj   +1 more source

Magnetosphere dynamics during the 14 November 2012 storm inferred from TWINS, AMPERE, Van Allen Probes, and BATS-R-US–CRCM [PDF]

open access: yesAnnales Geophysicae, 2018
During the 14 November 2012 geomagnetic storm, the Van Allen Probes spacecraft observed a number of sharp decreases (dropouts) in particle fluxes for ions and electrons of different energies.
N. Buzulukova   +10 more
doaj   +1 more source

Performance Assessment of a Developed Brake Frame Based on the Application of a Proposed Equivalent Model in a Net Protection System for Debris Flow

open access: yesApplied Sciences, 2018
The demand for a net protection system for mitigating debris flow has increased recently for which new energy absorption devices have been hereby developed. The purpose of this study is to analyze the behavior and energy absorption rate of a brake frame,
Sungtae Kim   +3 more
doaj   +1 more source

TRIANGULAR MATRIX REPRESENTATIONS OF SKEW MONOID RINGS

open access: yes, 2010
Let R be a ring and S a u.p.-monoid. Assume that there is a monoid homomorphism α : S → Aut (R). Suppose that α is weakly rigid and lR(Ra) is pure as a left ideal of R for every element a ∈ R.
Zhongkui, Liu, Xiaoyan, Yang
core   +1 more source

A Fracture Mechanics-based Method for Prediction of Cracking of Circular and Elliptical Concrete Rings under Restrained Shrinkage [PDF]

open access: yes, 2014
This article has been made available through the Brunel Open Access Publishing Fund.A new experimental method, utilizing elliptical ring specimens, is developed for assessing the likelihood of cracking and cracking age of concrete subject to restrained ...
Dong, W   +5 more
core   +1 more source

A wideband CPW ring power combiner with low insertion loss and high port isolation [PDF]

open access: yes, 2012
In this paper we present a coplanar waveguide (CPW)-based ring power combiner that exhibits less than 0.8 dB insertion loss, better than 15 dB port match and higher than 22 dB isolation loss over the frequency range from 50 GHz to 100 GHz.
Li, C.   +4 more
core   +1 more source

Analysis and Experimental Study on Bearing Temperature Rise of High Speed Machine Tools

open access: yesJixie chuandong, 2023
In high-speed machine tools, the friction heat of bearings will cause the deformation of the rolling body and the "burning shaft", which will reduce the fatigue life of bearings and affect the normal operation of equipment.
Li Jiangshan   +4 more
doaj  

Gap Vortex Evolution and Vibration Excitation Characteristics of a Pump-turbine under Dump-load Conditions [PDF]

open access: yesJournal of Applied Fluid Mechanics
This study examines the evolution mechanism of gap-vortex structures and the corresponding vibration excitation under load-rejection conditions in a pump-turbine.
S. Zhang, Q. Li, X. Chen
doaj   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

open access: yesAdvanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora   +4 more
wiley   +1 more source

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