time scale

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an arrangement of events used as a measure of duration

References in periodicals archive ?
The NIST simulations found that to achieve the same performance as a cesium-fountain-calibrated time scale, NIST would need to run an optical clock for 12 minutes every 12 hours, or 1 hour per day, or 4 hours every 2 and 1/3 days, or 12 hours per week.
Here we highlight how the WWDT can be used to visualize the spatial and temporal complexity of the California drought and the importance of having multiple drought and hydroclimate indices across different time scales.
The theory of systems on time scales comprises nonuniformly sampled systems, interval models, hybrid systems, etc.
with the time t belongs to the time scales T = R or [T.
The five-year agreement allows for expanded coordination in research and implementation of time scales, development of standards, dissemination of time and frequency, and collaboration in other areas of mutual interest.
Furthermore, wavelet analysis is described, and it is pointed out how to decompose the explanatory variables into their respective components on different time scales.
Feng: Forced Oscillation of Second Order Nonlinear Dynamic Equations on Time Scales, Electron.
Landlords or their agents must register the deposit within 30 days of receipt and all tenants must be issued with the prescribed information issued by the chosen scheme within this 30-day time scale.
The classical time scales calculus includes three important special cases : T = R, T = [omega]Z := {k[omega] : k [member of] Z}, [omega] > 0 and T = {[q.
Figure 5 shows the time scales with respect to the simulation angles for three frequencies.
It contains 16 papers on such topics as travel time tubes regulating transportation traffic, quadratic growth conditions in optimal control problems, optimal spatial pricing strategies with transportation costs, isoperimetric problems of the calculus of variations on time scales, metric regular maps and regularity for constrained extremum problems, and isoperimetric problems of the calculus of variations on time scales, to cite a few examples.
As discussed in [3], the use of time scales allows considerations of time domains more complex than R and N.
Drishnaswami through clever use of natural radioactive and radiogenic isotopes and selected elements have been able to investigate the details and determine the time scales of chemical scavenging and solute-particle interactions in the sea and ground waters, sedimentary processes on the sea and lake beds, growth and turnover of ferro-manganese deposits, river-ocean interactions and material transport through estuaries, air-sea gas exchange of CO2 and erosion of the Himalaya and the Deccan Traps on the chemical and isotopic evolution of the oceans and long term global change.
Recently [3, 6, 8, 11] (see also [1, 12]) the authors have extended some dynamic inequalities on time scales, which can be used to study certain dynamic equations on time scales.
Recently several authors have contributed to the development of the calculus of variations on time scales (for instance, see [3,11,12]).