aperiodic

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aperiodic

[¦a‚pir·ē¦äd·ik]
(physics)
Of irregular occurrence; not periodic; not displaying resonant response.
References in periodicals archive ?
All patients had normal voice when using everyday speech, but speaking into the computer resulted in the rapid onset of aperiodicity, strain, and a decrease in fundamental frequency.
Quasiperiodicity is a form of aperiodicity that has many of the attributes of periodicity.
Because of the role of the amygdala and the insula in the regulation of heart synchronization, electrical disruptions in these regions by specifically timed electrical currents coupled to the normal feedback from the heart into the brain can produce cardiac aperiodicity and even death.
Written by a meteorologist who first discovered what later was termed "chaos." Looking at chaotic systems from a unique and creative perspective, Lorenz draws out the meaning of such characteristics of chaotic systems as sensitive dependence on initial conditions, strange attractors, aperiodicity and stability/instability.
The embedding of the compositional potential of twelve-tone rows in the matrix of a "super-formula," however, made possible a music in which the creative tension between the individual and the cosmic, periodicity and aperiodicity, order and freedom, and construction and intuition continually creates new cells in an organism of a spiral-like expanding work.
The emphasis is on reproduction of the data but also on the abstractness of the theories: they 'aim at revealing the mathematical essence of the experimental aperiodicity .
Larval numbers at time t in this case are still followed by a corresponding group of pupae at time t + 1 and so on; the stage interactions on the characteristic time scale produce the irregular, unpredictable behavior of aperiodicity or "chaos" (Fig.
A measure of the "goodness" of a pseudo-random number generator is aperiodicity. However, any finite computer algorithm implementation yields only periodic sequences--although of very long period.