Results 21 to 30 of about 3,286,410 (288)

Gronwall-OuIang-Type Integral Inequalities on Time Scales

open access: yesJournal of Inequalities and Applications, 2010
We present several Gronwall-OuIang-type integral inequalities on time scales. Firstly, an OuIang inequality on time scales is discussed. Then we extend the Gronwall-type inequalities to multiple integrals.
Ailian Liu, Martin Bohner
doaj   +2 more sources

Unilateral Laplace Transforms on Time Scales

open access: yesMathematics, 2022
We review the direct and inverse Laplace transforms on non-uniform time scales. We introduce full backward-compatible unilateral Laplace transforms and studied their properties. We also present the corresponding inverse integrals and some examples.
Müfit Şan, Manuel D. Ortigueira
doaj   +1 more source

Time‐scale transformations of discrete time processes [PDF]

open access: yesJournal of Time Series Analysis, 2003
Abstract.  This paper investigates the effects of temporal aggregation when the aggregation frequency is variable and possibly stochastic. The results that we report include, as a particular case, the well‐known results on fixed‐interval aggregation, such as when monthly data are aggregated into quarters.
Oscar Jorda, Massimiliano Marcellino
openaire   +4 more sources

Forward Curvatures on Time Scales

open access: yesAbstract and Applied Analysis, 2011
We also introduce forward curvature of a curve and give some formulas to calculate forward curvature of a curve on time scales which may be an arbitrary closed subsets of the set of all real numbers.
M. S. Seyyidoglu   +4 more
doaj   +1 more source

Canonical time-frequency, time-scale, and frequency-scale representations of time-varying channels [PDF]

open access: yesCommunications in Information and Systems, 2005
Mobile communication channels are often modeled as linear time-varying filters or, equivalently, as time-frequency integral operators with finite support in time and frequency. Such a characterization inherently assumes the signals are narrowband and may not be appropriate for wideband signals.
Rickard, Scott T.   +3 more
openaire   +3 more sources

Time scales in spectator fragmentation [PDF]

open access: yesNuclear Physics A, 2001
8 pages, with 5 included figures; To appear in the proceedings of the CRIS 2000 conference; Also available from http://www-kp3.gsi.de/www/kp3/aladin_publications ...
C. SCHWARZ   +37 more
openaire   +5 more sources

Pair plasma relaxation time scales

open access: yes, 2010
By numerically solving the relativistic Boltzmann equations, we compute the time scale for relaxation to thermal equilibrium for an optically thick electron-positron plasma with baryon loading. We focus on the time scales of electromagnetic interactions.
A. G. Aksenov   +9 more
core   +1 more source

Time Scales in Long GRBs

open access: yes, 2001
We analyze a sample of bright long bursts and find that the pulses duration have a lognormal distribution while the intervals between pulses have an excess of long intervals (relative to lognormal distribution).
Ehud Nakar   +19 more
core   +1 more source

Time and length scales in spin glasses [PDF]

open access: yes, 2003
We discuss the slow, nonequilibrium, dynamics of spin glasses in their glassy phase. We briefly review the present theoretical understanding of the spectacular phenomena observed in experiments and describe new numerical results obtained in the first ...
A P Young   +19 more
core   +1 more source

Avoidance Control on Time Scales

open access: yes, 2009
We consider dynamic systems on time scales under the control of two agents. One of the agents desires to keep the state of the system out of a given set regardless of the other agent's actions.
A. Bressan   +19 more
core   +1 more source

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