Results 11 to 20 of about 805,121 (258)
Jensen's Functionals on Time Scales
Journal 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
Journal 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]
Journal 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
The Convolution on Time Scales
Abstract 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
The variational calculus on time scales [PDF]
International 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
Unilateral Laplace Transforms on Time Scales
Mathematics, 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]
Journal 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
Abstract 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]
Communications 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 Evolutionary Dynamics [PDF]
Physical Review Letters, 2006 Final version with minor changes, accepted for publication in Physical Review ...
Pérez Roca, Carlos +2 more
openaire +4 more sources