Results 11 to 20 of about 3,286,410 (288)

Integration on time scales

open access: yesJournal of Mathematical Analysis and Applications, 2003
In this paper, the author defines the Riemann and Lebesgue integrals (more precisely, the Riemann and Lebesgue \(\Delta\)-integrals and \(\nabla\)-integrals) on time scales and studies their properties and relationship. In particular, the author presents results concerning the lower and upper Darboux sums, the Riemann sums, the Riemann and Lebesgue ...
Gusein Sh Guseinov
openaire   +3 more sources

Time scales in cognitive neuroscience

open access: yesFrontiers in Physiology, 2013
Cognitive neuroscience boils down to describing the ways in which cognitive function results from brain activity. In turn, brain activity shows complex fluctuations, with structure at many spatio-temporal scales.
David ePapo
doaj   +1 more source

Irreversibility time scale [PDF]

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2006
Entropy creation rate is introduced for a system interacting with thermostats (i.e., for a system subject to internal conservative forces interacting with “external” thermostats via conservative forces) and a fluctuation theorem for it is proved. As an application, a time scale is introduced, to be interpreted as the time over which irreversibility ...
openaire   +5 more sources

Adsorption time scales of cluster-forming systems [PDF]

open access: yes, 2020
A microscopic model of adsorption in cluster forming systems with competing interaction is considered. The adsorption process is described by the master equation and modelled by a kinetic Monte Carlo method.
Bildanau, E., Vikhrenko, V.
core   +2 more sources

The variational calculus on time scales [PDF]

open access: yesInternational Journal for Simulation and Multidisciplinary Design Optimization, 2010
The discrete, the quantum, and the continuous calculus of variations, have been recently unified and extended by using the theory of time scales. Such unification and extension is, however, not unique, and two approaches are followed in the literature ...
Torrest Delfim F.M.
doaj   +1 more source

Time scales in nuclear giant resonances [PDF]

open access: yes, 2009
We propose a general approach to characterise fluctuations of measured cross sections of nuclear giant resonances. Simulated cross sections are obtained from a particular, yet representative self-energy which contains all information about fragmentations.
A. Bohr   +11 more
core   +1 more source

The Convolution on Time Scales

open access: yesAbstract and Applied Analysis, 2007
The main theme in this paper is an initial value problem containing a dynamic version of the transport equation. Via this problem, the delay (or shift) of a function defined on a time scale is introduced, and the delay in turn is used to introduce the ...
Martin Bohner, Gusein Sh. Guseinov
doaj   +1 more source

Time-Scales [PDF]

open access: yesJournal of Navigation, 1973
W. Palmer's note on Standard Time (this Journal, Vol. 25, page 535) may mislead some readers. He tends to confuse ‘Time’, as an abstract philosophical concept, with the measures of time, or time-scales, used in practice by astronomers, navigators, surveyors, physicists, electronic engineers and the general public.
openaire   +1 more source

Occupational Cohort Time Scales [PDF]

open access: yesJournal of Occupational & Environmental Medicine, 2015
This study explores how highly correlated time variables (occupational cohort time scales) contribute to confounding and ambiguity of interpretation.Occupational cohort time scales were identified and organized through simple equations of three time scales (relational triads) and the connections between these triads (time scale web).
Deubner, David C., Roth, H. Daniel
openaire   +2 more sources

Jensen's Functionals on Time Scales

open access: yesJournal of Function Spaces and Applications, 2012
We consider Jensen’s functionals on time scales and discuss its properties and applications. Further, we define weighted generalized and power means on time scales.
Matloob Anwar   +3 more
doaj   +1 more source

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