The definition (1) shows an explicit dependence on the two time indices.
Fig. 5 Tetrahedral graph of demographic time hexad identity, with edges labelled by the six time indices.
Demographic time measures are any of the six time indices discussed to describe demographic time: chronological age (A), period (P), birth cohort (C), thanatological age or time to death (T), lifespan or age-at-death (L), and death cohort (D).
For connection of two time index, l is defined as the lth (0< l
There are (20=binom {6}{3}) ways to choose three different time indices out of six, of which four form a triad identity: APC, TPD, TAL, and LCD.
If one selects three random time indices that do not form any of these four triad identities (20−4=16 possibilities), this property does not hold.
We evaluate this assumption by defining three time-shifted indices by modifying Eqs.
Bear in mind that ETFs that move at a pace two or three times their indexes will be much more volatile than the securities you wish to hedge.
As derivates of parasympathetic nervous system activity, two time domain indices of heart rate variability in the respiratory frequency range, also called respiratory sinus arrhythmia (RSA), will be obtained [ 41].
Consultations in the 12 months before diagnosis were identified, a priori, over three time periods before the index date: 0 3 months, 4 6 months and 7 12 months.
