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Related to perturbation: Perturbation theory
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PERTURBATION. This is a technical word which signifies disturbance, or infringement of a right. It is usually applied to the disturbance of pews, or seats in a church. In the ecclesiastical courts actions for these disturbances are technically called "suits for perturbation of seat." 1 Phillim. 323. Vide Pew.

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La Societe Nationale d'Exploitation et de Distribution des Eaux (SONEDE) annonce que des perturbations et une coupure dans la distribution de l'eau potable seront enregistrees, mardi 13 mars 2018 a 22 h, dans les zones suivantes : Sidi Daoud, Bhar Lazrag, les Jardins de Carthage, El Aouina, les berges du lac 1 et 2, Ain Zaghouan, cite El khalil, Sidi Daoued et le Kram Ouest.
The effect of E on the potentials associated to the perturbations in flat and curved spaces is the following: the potential is going down too fast to a very low amplitude minima (-[infinity]) in flat space as E is going to its maxima, this is interpreted as inducing an increase in the velocity of the perturbation to disappear; and in curved space the effect of E on the potential is absent.
Active perturbation uses an additional source of energy to obtain a suitable variation in the node measurement.
Over the past 10 years much research has been published concerning perturbation training.
The experimental information has been statistically processed in the LINCS database in order to provide for each chemical perturbation a list of the 50 most highly up/down regulated transcriptomics probes.
Each concentration and duration of chemical treatment produced a system perturbation (X), which was represented by the vector: X = ([x.
The load-current-based MPPT method with the fixed step size (FXS) perturbation P&O algorithm has been proposed to realize MPPT functionality by sensing only the load current (this method is discussed further in the next section) which eliminates the need for a multiplier that is required to obtain the power value in the conventional power-based MPPT methods.
A relatively minor perturbation of the controller gains may lead to performance degradation and instability.
We also proposed the Homotopy Perturbation Method (HPM) which is highly accurate in witch only a few terms are required to obtain accurate computable solution.
Perturbation and Observe (P&O) algorithm is most commonly used in practical experiments due to its simplicity.
m] that corresponds to the perturbation with the fastest growth rate of amplitude is more than the tube diameter or the channel width).
In this paper we present a complete perturbation analysis of the [H.