Results 21 to 30 of about 22,912 (148)

Noncommutative Lagrange Mechanics [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
It is proposed how to impose a general type of ''noncommutativity'' within classical mechanics from first principles. Formulation is performed in completely alternative way, i.e. without any resort to fuzzy and/or star product philosophy, which are extensively applied within noncommutative quantum theories.
openaire   +4 more sources

Deux extraits commentés des Basses Œuvres de ‘Abduh Khāl

open access: yesArabian Humanities, 2014
In his novel Tarmī bi‑sharar (Throwing Sparks) for which he won the International Prize for Arab Fiction in 2010, Saudi novelist ‘Abduh Khāl holds an unflattering mirror to the Wahhabi kingdom.
Frédéric Lagrange
doaj   +1 more source

Limit point buckling of a finite beam on a nonlinear foundation

open access: yesTheoretical and Applied Mechanics Letters, 2014
In this paper, we consider an imperfect finite beam lying on a nonlinear foundation, whose dimensionless stiffness is reduced from 1 to k as the beam deflection increases.
Romain Lagrange
doaj   +1 more source

Signes du pouvoir militaire : de l’épée de connétable au bâton de maréchal

open access: yesBulletin du Centre de Recherche du Château de Versailles, 2006
The Army Museum’s collections, and the Invalides building itself, include a number of objects and representations typical of the military power, especially as a commanding one.
François Lagrange
doaj   +1 more source

Gravitational Waves from the Cosmological Quark-Hadron Phase Transition Revisited

open access: yesUniverse, 2021
The recent claim by the NANOGrav collaboration of a possible detection of an isotropic gravitational wave background stimulated a series of investigations searching for the origin of such a signal.
Pauline Lerambert-Potin   +1 more
doaj   +1 more source

Takotsubo cardiomyopathy in the setting of severe hyponatremia and beer potomania: A case report

open access: yesClinical Case Reports, 2022
Takotsubo cardiomyopathy (TC), an acute cardiac event is often associated with acute emotional stress, usually in the setting of cardiovascular risk factors. This case report attempts to review one of the triggers of TC beer potomania‐induce hyponatremia
Sheriff N. Dodoo   +4 more
doaj   +1 more source

The Euler-Lagrange expression and degenerate lagrange densities [PDF]

open access: yesJournal of the Australian Mathematical Society, 1972
It is well known that many of the field equations from theoretical physics (e.g. Einstein field equations, Maxwell's equations, Klein-Gordon equation) can be obtained from a variational principle with a suitably chosen Lagrange density. In the case of the Einstein equations the corresponding Lagrangian is degenerate (i.e., the associated Euler-Lagrange
openaire   +2 more sources

Close-in compact super-Earth systems emerging from resonant chains: Slow destabilization by unseen remnants of formation

open access: yesAstronomy & Astrophysics
Planet formation simulations consistently predict compact systems of numerous small planets in chains of mean motion resonances formed by planet-disk interaction, but transiting planet surveys have found most systems to be non-resonant and somewhat ...
Goldberg Max, Petit Antoine C.
doaj   +1 more source

The Darcy-Forchheimer law for modelling fluid flow in biological tissues [PDF]

open access: yesTheoretical and Applied Mechanics, 2014
The motion of the interstitial uid of a biological tissue is studied by employing the Darcy-Forchheimer law, a correction to standard Darcy's law. The tissue is modelled as a saturated biphasic medium comprising the fluid and a deformable matrix.
Grillo Alfio   +2 more
doaj   +1 more source

Lagrange–Poincaré field equations

open access: yesJournal of Geometry and Physics, 2011
Submitted to Journal of Geometry and Physics, 45 pages, 1 ...
Ellis, David C. P.   +3 more
openaire   +5 more sources

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