Results 71 to 80 of about 25,613,351 (218)

Stochastic Approximation with Two Time Scales: The General Case [PDF]

open access: yesarXiv
Two time scale stochastic approximation is analyzed when the iterates on either or both time scales do not necessarily converge.
arxiv  

Conditional oscillation of half-linear Euler-type dynamic equations on time scales

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
We investigate second-order half-linear Euler-type dynamic equations on time scales with positive periodic coefficients. We show that these equations are conditionally oscillatory, i.e., there exists a sharp borderline (a constant given by the ...
Petr Hasil, J. VĂ­tovec
doaj   +1 more source

Planck scale to Compton scale [PDF]

open access: yesarXiv, 2006
The Planck scale is considered to be a natural minimum scale, made up as it is solely of fundamental constants. However the Planck scale is well beyond the scales encountered in real life, these latter being at least of the order of the Compton scale. The Compton scale too is fundamental in the same sense -- it is made up of fundamental micro physical ...
arxiv  

New results for time reversed symplectic dynamic systems and quadratic functionals

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
In this paper, we examine time scale symplectic (or Hamiltonian) systems and the associated quadratic functionals which contain a forward shift in the time variable.
Roman Simon Hilscher, Petr Zemanek
doaj   +1 more source

Qualitative aspects of Volterra integro-dynamic system on time scales

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2013
This paper deals with the resolvent, asymptotic stability and boundedness of the solution of time-varying Volterra integro-dynamic system on time scales in which the coefficient matrix is not necessarily stable.
Vasile Lupulescu   +2 more
doaj   +1 more source

A new geomagnetic polarity time scale for the Late Cretaceous and Cenozoic

open access: yes, 1992
We have constructed a magnetic polarity time scale for the Late Cretaceous and Cenozoic based on an analysis of marine magnetic profiles from the world's ocean basins. This is the first time, since Heirtzler et al. (1968) published their time scale, that
S. Cande, D. Kent
semanticscholar   +1 more source

Estimates of some applicable inequalities on time scales [PDF]

open access: yesarXiv, 2015
The main objective of the paper is to establish explicit estimates on some applicable inequalities in two variables on time scales which can be used in the study of certain qualitative properties of dynamical equations on time scales.
arxiv  

Oscillation of second order neutral dynamic equations with distributed delay

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper, we establish new oscillation criteria for second order neutral dynamic equations with distributed delay by employing the generalized Riccati transformation.
Qiaoshun Yang, Zhiting Xu, Ping Long
doaj   +1 more source

Home - About - Disclaimer - Privacy