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Перегляд Фізико-технічні та математичні науки за назвою

Репозиторій DSpace/Manakin

Перегляд Фізико-технічні та математичні науки за назвою

Сортувати за: Порядок: Результатів:

  • L²-invariants and morse-smale flows on manifolds 
    Sharko, V.V. (Український математичний журнал, 2007)
    Вивчаються гомотопічні інваріанти вільних коланцюгових та гільбертових комплексів. Ці L²-інваріанти застосовуються при обчисленні точних значень мінімальних чисел замкнених орбіт фіксованих індексів несингулярних потоків ...
  • Labelling matrices and index matrices of a graph structure 
    Dinesh, T.; Ramakrishnan, T.V. (Algebra and Discrete Mathematics, 2013)
    The concept of graph structure was introduced by E. Sampathkumar in 'Generalised Graph Structures', Bull. Kerala Math. Assoc., Vol 3, No.2, Dec 2006, 65-123. Based on the works of Brouwer, Doob and Stewart, R.H. Jeurissen ...
  • Ladder Operators for Lamé Spheroconal Harmonic Polynomials 
    Méndez-Fragoso, R.; Ley-Koo, E. (Symmetry, Integrability and Geometry: Methods and Applications, 2012)
    Three sets of ladder operators in spheroconal coordinates and their respective actions on Lamé spheroconal harmonic polynomials are presented in this article. The polynomials are common eigenfunctions of the square of the ...
  • Ladder Operators for Quantum Systems Confined by Dihedral Angles 
    Ley-Koo, E.; Sun, G.-H. (Symmetry, Integrability and Geometry: Methods and Applications, 2012)
    We report the identification and construction of raising and lowering operators for the complete eigenfunctions of isotropic harmonic oscillators confined by dihedral angles, in circular cylindrical and spherical coordinates; ...
  • Lagrange Anchor and Characteristic Symmetries of Free Massless Fields 
    Kaparulin, D.S.; Lyakhovich, S.L.; Sharapov, A.A. (Symmetry, Integrability and Geometry: Methods and Applications, 2012)
    A Poincaré covariant Lagrange anchor is found for the non-Lagrangian relativistic wave equations of Bargmann and Wigner describing free massless fields of spin s>1/2 in four-dimensional Minkowski space. By making use of ...
  • Lagrange Stability of Semilinear Differential-Algebraic Equations and Application to Nonlinear Electrical Circuits 
    Filipkovska, M.S. (Журнал математической физики, анализа, геометрии, 2018)
    A semilinear differential-algebraic equation (DAE) is studied focusing on the Lagrange stability (instability). The conditions for the existence and uniqueness of global solutions (a solution exists on an infinite interval) ...
  • Lagrangian approach in spin-oscillations problem 
    Pyshkin, P.V.; Kopeliovich, A.I.; Yanovsky, A.V. (Condensed 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 ...
  • Lagrangian Approach to Dispersionless KdV Hierarchy 
    Choudhuri, A.; Talukdar, B.; Das, U. (Symmetry, Integrability and Geometry: Methods and Applications, 2007)
    We derive a Lagrangian based approach to study the compatible Hamiltonian structure of the dispersionless KdV and supersymmetric KdV hierarchies and claim that our treatment of the problem serves as a very useful supplement ...
  • Lagrangian Mechanics and Reduction on Fibered Manifolds 
    Li, S.; Stern, A.; Tang, X. (Symmetry, Integrability and Geometry: Methods and Applications, 2017)
    This paper develops a generalized formulation of Lagrangian mechanics on fibered manifolds, together with a reduction theory for symmetries corresponding to Lie groupoid actions. As special cases, this theory includes not ...
  • Lagrangian Reduction on Homogeneous Spaces with Advected Parameters 
    Vizman, C. (Symmetry, Integrability and Geometry: Methods and Applications, 2015)
    We study the Euler-Lagrange equations for a parameter dependent G-invariant Lagrangian on a homogeneous G-space. We consider the pullback of the parameter dependent Lagrangian to the Lie group G, emphasizing the special ...
  • Lagrangian vector field and Lagrangian formulation of partial differential equations 
    Chen, M. (Condensed Matter Physics, 2005)
    In this paper we consider the Lagrangian formulation of a system of second order quasilinear partial differential equations. Specifically we construct a Lagrangian vector field such that the flows of the vector field ...
  • Lambda point thermodynamics of confined liquid helium: negative surface specific heat 
    Ferrell, R.A.; Bhattacharjee, J.K. (Физика низких температур, 1998)
    We present some theoretical considerations that are relevant to the forthcoming measurements in microgravity of the specific heat of confined liquid helium (the flight experiment «СНЕХ»), Primary attention is devoted to ...
  • Laminated material for gamma radiation shielding 
    Aksenov, I.I.; Belous, V.A.; Goncharov, I.G.; Kuprin, A.S.; Lomino, N.S.; Mazilov, A.V.; Ovcharenko, V.D.; Pavlov, V.S.; Razsukovany, B.N. (Functional Materials, 2009)
    The efficiency of a radiation shielding structure consisting of a set of alternating layers of light and heavy metals is shown to be enhanced when the layered structure is turned to a radiation source by the light metal ...
  • Lamplighter model of a random copolymer adsorption on a line 
    Nazarov, L.I.; Nechaev, S.K.; Tamm, M.V. (Condensed Matter Physics, 2014)
    We present a model of an AB-diblock random copolymer sequential self-packaging with local quenched interactions on a one-dimensional infinite sticky substrate. It is assumed that the A-A and B-B contacts are favorable, ...
  • Landau parameter of elasticity 
    Merabtine, N.; Bousnane, Z.; Benslama, M.; Boussaad, F. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2006)
    Based on the consideration given by the Ginzburg-Landau (GL) theory according to the variational principle, we assume that the microscopic Gibbs function density given by [1] ∫VGsdV = ∫(Fs - 1/4pBH)dv must be stationary ...
  • Landau–Zener transitions and Rabi oscillations in a Cooper-pair box: beyond two-level models 
    Parafilo, A.V.; Kiselev, M.N. (Физика низких температур, 2018)
    We investigate quantum interference effects in a superconducting Cooper-pair box by taking into account the possibility of tunneling processes involving one and two Cooper pairs. The quantum dynamics is analyzed in ...
  • L- and M-structure in lush spaces 
    Pipping, E. (Журнал математической физики, анализа, геометрии, 2011)
    Let X be a Banach space which is lush. It is shown that if a subspace of X is either an L-summand or an M-ideal then it is also lush.
  • Langmuir-Blodgett films of binary mixtures for polymethylmethacrylate/rubrene and stearic acid/rubrene: formation conditions and optical properties 
    Bezkrovnaya, O.N.; Savin, Yu.N.; Dobrotvorskaya, M.V. (Functional Materials, 2006)
    Polymorphism of polymethylmethacrylate/rubrene and a stearic acid/rubrene monolayers depending on concentration of luminophore immobilized in the film has been studied. The maximum rubrene concentration has been determined ...
  • Langmuir probe in ion-beam plasma: theory VS experiment 
    Dudin, S.V. (Физическая инженерия поверхности, 2012)
    The paper is devoted to experimental verification of theoretical model of Langmuir probe operation in ion-beam plasma. The mathematical model of single cylindrical Langmuir probe describes dependence of ion current ...
  • Langmuir waves excitation by electron beam with the limited cross-section in the near-Eearth electron foreshock 
    Anisimov, I.O.; Krasnosselskikh, V.V.; Musatenko, K.S. (Вопросы атомной науки и техники, 2005)
    Model of the stripped monoenergetic electron beam with the sharp boundaries based on the results of CLUSTER measurements is proposed for the near-Earth foreshock vicinity. Dispersion equation is obtained and analyzed using ...

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