Quiet moments in time

Moments in time.

Moments in Time

It has been suggested that perception and action can be understood as evolving in temporal epochs or sequential processing units. Successive events are fused into units forming a unitary experience or "psychological present." Studies have identified several temporal integration levels on different time scales which are fundamental for our understanding of behavior and subjective experience. In ...

Quiet time particle acceleration in interplanetary space

We propose a model for the acceleration of charged particles in interplanetary space that appear during quiet time periods, that is, not associated with solar activity events like intense flares or coronal mass ejections. The interaction of charged particles with modeled turbulent electromagnetic fields, which mimic the fields observed in the interplanetary medium, is studied. The turbulence is...

Harmonic continuous time branching moments

We show that the mean inverse populations of nondecreasing, square integrable, continuous-time branching processes decrease to zero like the inverse of their mean population if and only if the initial population k is greater than a first threshold m1 ≥ 1. If, furthermore, k is greater than a second threshold m2 ≥ m1, the normalized mean inverse population is at most 1/(k −m2). We express m1 and...

Moments in the Time andPolynomial - Based Transform

| Expressions for the rst-and second order moments of the energy distribution function of a signal in the original and the polynomial-based transform domain are derived. It is shown that these moments can be calculated without actually performing the transformation. It is argued that these results can be used to obtain compact signal-dependent transforms.