Results 1 to 10 of about 517,684 (185)

On the Origins of Hamilton’s Principle(s)

Encyclopedia
This entry first provides an overview of the historical, cultural and epistemological background that is key for Hamilton’s positions on mechanics. We consider the investigations on geometrical optics in the 17th and 18th centuries, Euler’s and Lagrange ...
Paolo Bussotti, Danilo Capecchi, Giuseppe Ruta   +2 more
doaj   +1 more source

Approximate analytical and numerical solutions of a nonlinear boundary value problem in fluid mechanics based on symmetry reduction

Partial Differential Equations in Applied Mathematics, 2020
This work presents applications of the Liesymmetry method to a boundary value problem (BVP) of the governing equations in fluid mechanics. The Wu differential characteristic set algorithm is used to obtain a group of multi-parameter symmetries for the ...
Litao Gai, Mingchu Li, Bilige Sudao
doaj   +1 more source

Advances in CALIPSO (IIR) cirrus cloud property retrievals – Part 2: Global estimates of the fraction of cirrus clouds affected by homogeneous ice nucleation [PDF]

Atmospheric Chemistry and Physics
Cirrus clouds can form through two ice nucleation pathways (homo- and heterogeneous ice nucleation; henceforth hom and het, respectively) that result in very different cloud physical and radiative properties.
D. L. Mitchell, A. Garnier
doaj   +1 more source

A variational formulation of analytical mechanics in an affine space

, 2006
Variational formulations of statics and dynamics of mechanical systems controlled by external forces are presented as examples of variational principles.Comment: 17 pages, corrected typos, accepted for publication in Rep.
Antonio De Nicola, Marmo, Tulczyjew, Tulczyjew, Wlodzimierz M. Tulczyjew   +4 more
core   +1 more source

Uma aplicação do método da mínima restrição de Gauss

Revista Brasileira de Ensino de Física
O método da mínima restrição de Gauss é recapitulado e aplicado à solução do movimento de uma esfera sobre solo rugoso sob a ação de força (dentro de certas aproximações).
G.F. Leal Ferreira
doaj   +1 more source

An analytical model for elasto-plastic buckling of columns [PDF]

, 2013
The theory of buckling strength of compression members in the plastic range has been extensively studied, and numerical methods already exist which deal with such behaviour.
Izzuddin, B.A., Jowhari Moghadam, S.
core  

Entropy regularized reinforcement learning using large deviation theory

Physical Review Research, 2023
Reinforcement learning (RL) is an important field of research in machine learning that is increasingly being applied to complex optimization problems in physics.
Argenis Arriojas, Jacob Adamczyk, Stas Tiomkin, Rahul V. Kulkarni   +3 more
doaj   +1 more source

Non-Integrability of a weakly integrable Hamiltonian system

, 2003
The geometric approach to mechanics based on the Jacobi metric allows to easily construct natural mechanical systems which are integrable (actually separable) at a fixed value of the energy.
Pucacco, Giuseppe, Rosquist, Kjell
core   +1 more source

Finite element simulation of barge impact into a rigid wall

Alexandria Engineering Journal, 2014
The forces and locations of inland barge impacts currently control the design specifications for lock walls. This has resulted in a significant increase in the final construction costs of these walls.
H.W. Leheta, A.M. Elhewy, W. El Sayed Mohamed   +2 more
doaj   +1 more source

Self-Similar Interpolation in Quantum Mechanics

, 1998
An approach is developed for constructing simple analytical formulae accurately approximating solutions to eigenvalue problems of quantum mechanics. This approach is based on self-similar approximation theory.
A. Agodi, A. L. Fetter, A. M. Kosevich, A. M. Polyakov, A. Okopińska, A. V. Sergeev, B. Simon, B. Simon, C. G. Callan, C. M. Bender, C. M. Bender, D. Dalfovo, D. E. Pritchard, E. J. Weniger, E. Lundh, E. P. Gross, E. P. Gross, E. P. Yukalova, E. P. Yukalova, F. A. Buot, F. A. de Saavedra, F. Brosens, F. T. Hioe, G. A. Baker, Jr., G. A. Baker, Jr., G. A. Baker, Jr., G. C. Marques, H. F. Hess, H. Haugerud, H. W. Jackson, I. D. Feranchuk, I. Halliday, J. B. Kogut, J. C. Neu, J. E. Drummond, J. Killingbeck, J. Zinn-Justin, J. Čižek, K. B. Davis, K. Bhattacharyya, K. Bhattacharyya, K. Kirsten, K. Kirsten, K. Kirsten, L. P. Pitaevskii, M. Alexanian, M. Alexanian, M. Consoli, M. Consoli, M. H. Anderson, M. O. Mewes, O. V. Selyugin, P. M. Stevenson, P. Whitlock, R. Balsa, R. Bishop, R. Ibanez-Meier, R. J. Dodd, R. K. Pathak, R. Karrlein, S. B. Yuste, S. Datta, S. Gluzman, S. Gluzman, S. Graffi, U. Woggen, V. I. Yukalov, V. I. Yukalov, V. I. Yukalov, V. I. Yukalov, V. I. Yukalov, V. I. Yukalov, V. I. Yukalov, V. I. Yukalov, V. I. Yukalov, V. I. Yukalov, V. I. Yukalov, V. I. Yukalov, V. L. Ginzburg, V. L. Ginzburg, W. A. B. Evans, W. E. Caswell, W. Petrich   +82 more
core   +1 more source