Results 21 to 30 of about 3,054,537 (278)

Numerical Investigation on the Influence of the Streamlined Structures of the High-Speed Train’s Nose on Aerodynamic Performances

open access: yesApplied Sciences, 2021
The structural design of the streamlined shape is the basis for high-speed train aerodynamic design. With use of the delayed detached-eddy simulation (DDES) method, the influence of four different structural types of the streamlined shape on aerodynamic ...
Zhenxu Sun   +4 more
doaj   +1 more source

Avoidance Coupling

open access: yesElectronic Communications in Probability, 2013
We examine the question of whether a collection of random walks on a graph can be coupled so that they never collide. In particular, we show that on the complete graph on n vertices, with or without loops, there is a Markovian coupling keeping apart Omega(n/log n) random walks, taking turns to move in discrete time.
Angel, Omer   +4 more
openaire   +4 more sources

Experimental study on the formation of two axial jets of cavitation bubbles near soft membranes with different thicknesses

open access: yesAIP Advances, 2022
A cavitation bubble collapses non-spherically, splits into two smaller bubbles, and induces two axial jets flowing in opposite directions near a soft membrane. The soft membrane is deformed and even pierced after the impact of the downward jet.
Ao Wang   +5 more
doaj   +1 more source

Mitigation of dynamical instabilities in laser arrays via non-Hermitian coupling [PDF]

open access: yes, 2018
Arrays of coupled semiconductor lasers are systems possessing complex dynamical behavior that are of major interest in photonics and laser science.
Feng, L., Longhi, S.
core   +2 more sources

A super-Ohmic energy absorption in driven quantum chaotic systems

open access: yes, 2004
We consider energy absorption by driven chaotic systems of the symplectic symmetry class. According to our analytical perturbative calculation, at the initial stage of evolution the energy growth with time can be faster than linear. This appears to be an
257   +15 more
core   +2 more sources

Spatio-Temporal Variations in Soil Erosion and Its Driving Forces in the Loess Plateau from 2000 to 2050 Based on the RUSLE Model

open access: yesApplied Sciences
Assessing the spatio-temporal variability and driving forces of soil erosion on the Loess Plateau is critical for ecological and environmental management.
Jie Min   +4 more
doaj   +1 more source

Vibration Control of Marine Top Tensioned Riser with a Single Tuned Mass Damper

open access: yesJournal of Marine Science and Engineering, 2020
The study of the Tuned Mass Damper (TMD) on Top Tensioned Risers (TTRs) through the application of numerical analysis is of great significance for marine engineering.
Jixiang Song   +4 more
doaj   +1 more source

Thermalisation by a boson bath in a pure state

open access: yes, 2008
We consider a quantum system weakly coupled to a large heat bath of harmonic oscillators. It is well known that such a boson bath initially at thermal equilibrium thermalises the system.
Borowski   +11 more
core   +2 more sources

QUATERNIONIC COUPLING [PDF]

open access: yesInternational Journal of Pure and Apllied Mathematics, 2014
Physics is in its development a major challenge to relate fields, this paper presents a proposal to relate classical fields of physics, ie the electric field, magnetic field and gravitational equations by time-dependent. The proposal begins with the work that determines the Cauchy-Riemann conditions for quaternions [1], and the determination of Laplace’
Marão, José Antonio Pires   +1 more
openaire   +3 more sources

Kinematic-mapping-model-guided analysis and optimization of 2-PSS&1-RR circular-rail parallel mechanism for fully steerable phased array antennas

open access: yesDefence Technology
This paper presents a systematic methodology for analyzing and optimizing an innovative antenna mount designed for phased array antennas, implemented through a novel 2-PSS&1-RR circular-rail parallel mechanism.
Guodong Tan   +6 more
doaj   +1 more source

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