Results 51 to 60 of about 453,874 (281)

Unfolding a Hidden Lagrangian Structure of a Class of Evolution Equations

open access: yesAxioms, 2022
It is shown that a simple modification of the standard Lagrangian underlying the dynamics of Newtonian lattices enables one to infer the hidden Lagrangian structure of certain classes of first order in time evolution equations which lack the conventional
Philip Rosenau
doaj   +1 more source

Lagrangian Reachabililty

open access: yes, 2017
We introduce LRT, a new Lagrangian-based ReachTube computation algorithm that conservatively approximates the set of reachable states of a nonlinear dynamical system. LRT makes use of the Cauchy-Green stretching factor (SF), which is derived from an over-
A Donzé   +21 more
core   +2 more sources

Multiobjective Codesign Optimization of a Planar Pneumatic Artificial Muscle‐Based Snake‐Like Robot for Enhanced Agility and Energy Efficiency

open access: yesAdvanced Robotics Research, EarlyView.
A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley   +1 more source

On the off-shell superfield Lagrangian formulation of 4D, N=1 supersymmetric infinite spin theory

open access: yesPhysics Letters B, 2022
We develop a complete off-shell Lagrangian description of the free 4D,N=1 supersymmetric theory of infinite spin. Bosonic and fermionic fields are formulated in terms of spin-tensor fields with dotted and undotted indices.
I.L. Buchbinder   +3 more
doaj   +1 more source

Invariant Lagrangian subspaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1988
It is proved that on Hilbert spaces with strong symplectic form, every symplectic operatorI+CI + CwithCCcompact has an invariant Lagrangian subspace.
openaire   +1 more source

Lagrangian-based Hydrodynamic Model: Freeway Traffic Estimation [PDF]

open access: yes, 2012
This paper is concerned with highway traffic estimation using traffic sensing data, in a Lagrangian-based modeling framework. We consider the Lighthill-Whitham-Richards (LWR) model (Lighthill and Whitham, 1955; Richards, 1956) in Lagrangian-coordinates ...
Friesz, Terry L., Han, Ke, Yao, Tao
core  

Hard‐Magnetic Soft Millirobots in Underactuated Systems

open access: yesAdvanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang   +4 more
wiley   +1 more source

Generalized Augmented Lagrangian Problem and Approximate Optimal Solutions in Nonlinear Programming

open access: yesJournal of Inequalities and Applications, 2007
We introduce some approximate optimal solutions and a generalized augmented Lagrangian in nonlinear programming, establish dual function and dual problem based on the generalized augmented Lagrangian, obtain approximate KKT necessary optimality condition
Zhe Chen, Kequan Zhao, Yuke Chen
doaj   +2 more sources

A hybrid Eulerian–Lagrangian numerical scheme for solving prognostic equations in fluid dynamics [PDF]

open access: yesGeoscientific Model Development, 2013
A new hybrid Eulerian–Lagrangian numerical scheme (HEL) for solving prognostic equations in fluid dynamics is proposed. The basic idea is to use an Eulerian as well as a fully Lagrangian representation of all prognostic variables.
E. Kaas   +3 more
doaj   +1 more source

Conic lagrangian singularities

open access: yesTopology and its Applications, 1998
By definition, a complex analytic manifold is called conic if it is endowed with a proper free \({\mathbb C}^\ast\)-action. A conic map is a \({\mathbb C}^\ast\)-equivariant map of conic manifolds. Modifying considerations of [\textit{V. I. Arnold}, \textit{S. M. Gusejn-Zade} and \textit{A. N. Varchenko}, `Singularities of differentiable maps.
Adams, M.   +3 more
openaire   +2 more sources

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