Results 21 to 30 of about 19,826 (256)

Controlled Lagrangian and Hamiltonian Systems [PDF]

open access: yes, 2002
any control systems are mechanical systems. The unique feature of mechanical systems is the notion of energy, which gives much information on the stability of equilibria.
Chang, Dong Eui
core   +1 more source

Lagrangian Data Assimilation for Improving Model Estimates of Velocity Fields and Residual Currents in a Tidal Estuary

open access: yesApplied Sciences, 2021
Numerical models are associated with uncertainties that can be reduced through data assimilation (DA). Lower costs have driven a recent tendency to use Lagrangian instruments such as drifters and floats to obtain information about water bodies.
Neda Mardani   +5 more
doaj   +1 more source

A Fourier approach to Lagrangian vortex detection [PDF]

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2019
We study the transport properties of coherent vortices over a finite-time duration. Here, we reveal that such vortices can be identified based on the frequency-domain representation of Lagrangian trajectories. We use Fourier analysis to convert particles’ trajectories from their time domain to a presentation in the frequency domain.
El Aouni, Anass   +3 more
openaire   +3 more sources

Lagrangian evolution approach to surface-patch quadrangulation

open access: yesApplications of Mathematics, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Serena Morigi   +3 more
openaire   +3 more sources

BRST-BV approach to continuous-spin field

open access: yesPhysics Letters B, 2018
Using BRST-BV approach, massless and massive continuous-spin fields propagating in the flat space are studied. For such fields, BRST-BV gauge invariant Lagrangian is obtained.
R.R. Metsaev
doaj   +1 more source

A Backwards-Tracking Lagrangian-Eulerian Method for Viscoelastic Two-Fluid Flows

open access: yesApplied Sciences, 2021
A new Lagrangian–Eulerian method for the simulation of viscoelastic free surface flow is proposed. The approach is developed from a method in which the constitutive equation for viscoelastic stress is solved at Lagrangian nodes, which are convected by ...
Simon Ingelsten   +3 more
doaj   +1 more source

Lagrangian relaxation heuristics for the uncapacitated single-source multi-product facility location problem [PDF]

open access: yes, 2013
Facility location problem is one of the strategic logistical drivers within the supply chain which is a hard to solve optimization problem. In this study, we focus on the uncapacitated single-source multi-product production/distribution facility location
Nezhad, Ali Mohammad   +2 more
core   +1 more source

A Lagrangian Approach to Transport of Momentum and Biomass in Aquatic Biological Systems [PDF]

open access: yes, 2010
In recent years, a Lagrangian Coherent Structures (LCS) method was developed to identify boundaries between distinct kinematic regions in unsteady flows.
Peng, Jifeng
core   +1 more source

Effective Lagrangian approach to the fermion mass problem [PDF]

open access: yesPhysical Review D, 1994
21 pages, UM-P-93/81, latex file, 1 figure available on ...
Shaw, D. S., Volkas, R. R.
openaire   +3 more sources

Lagrangian approach in spin-oscillations problem

open access: yesCondensed Matter Physics, 2014
Lagrangian of electronic liquid in magneto-inhomogeneous micro-conductor has been constructed. A corresponding Euler-Lagrange equation has been solved. It was shown that the described system has eigenmodes of spin polarization and total electric current ...
P.V. Pyshkin   +2 more
doaj   +1 more source

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