TERMIUM Plus®

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ELIMINATION DIFFERENCES [4 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2013-06-26

English

Subject field(s)
  • Statistical Methods
  • Scientific Measurements and Analyses
  • Soil Science
  • Environmental Studies and Analyses
DEF

The minimum amount of material in a sample for which the variability caused by the individual particles within that material has a negligible effect.

OBS

The minimum sample size is estimated using a formula taking into account different factors. One of these factors is the variability that is accepted to be caused by the differences between individual particles. When a large amount of variability is chosen for this factor, there will no longer be a "negligible effect" as mentioned in the definition. However, in normal circumstances a low value will be chosen, accepting only a relative small amount of variability.

OBS

minimum sample size: term and definition standardized by the International Organization for Standardization (ISO).

Key term(s)
  • minimal sample size

French

Domaine(s)
  • Méthodes statistiques
  • Mesures et analyse (Sciences)
  • Science du sol
  • Études et analyses environnementales
DEF

Quantité minimale de matériau dans un échantillon pour laquelle la variabilité due aux particules individuelles dudit matériau a un effet négligeable.

OBS

La taille minimale d’échantillon est estimée en utilisant une formule prenant en compte différents facteurs. L'un de ces facteurs est l'importance de la variabilité acceptée, due aux différences observées entre les particules individuelles. L'attribution d’une grande variabilité à ce facteur entraîne l'élimination de tout «effet négligeable» tel que mentionné dans la définition. Toutefois, dans une situation normale, une valeur peu élevée est choisie, admettant uniquement une variabilité relativement peu importante.

OBS

taille minimale d’échantillon : terme et définition normalisés par l’Organisation internationale de normalisation (ISO).

Key term(s)
  • taille minimum d’échantillon

Spanish

Save record 1

Record 2 2002-03-28

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Spacecraft
CONT

In a long synthetic aperture (array), SAR focusing involves the removal and compensation of path length differences from the antenna to the target on the ground.

CONT

The main advantage of a focused synthetic aperture is that it increases its array length over those radar signals that can be processed, and thus increases potential SAR resolution at any range. SAR focusing is a necessary process when the length of a synthetic array is a significant fraction of the range to ground being imaged, as the lines-of-sight (range) from a particular point on the ground to each individual element of the array differ in distance. These range differences, or path length differences, of the radar signals can affect image quality. In a focused SAR image these phase errors can be compensated for by applying a phase correction to the return signal at each synthetic aperture element. Focusing errors may be introduced by unknown or uncorrected platform motion. In an unfocused SAR image, the usable synthetic aperture length is quite limited.

OBS

SAR focusing: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Engins spatiaux
DEF

Élimination et compensation des différences de trajectoires entre l'antenne et la cible au sol.

OBS

focalisation SAR : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Save record 2

Record 3 1999-05-11

English

Subject field(s)
  • Artificial Intelligence
DEF

Reduction of the difference between the data structure that represents the current situation and that which represents the goal situation.

French

Domaine(s)
  • Intelligence artificielle

Spanish

Save record 3

Record 4 1981-01-26

English

Subject field(s)
  • Transport of Water (Water Supply)
  • Water Treatment (Water Supply)
OBS

... elimination of differences resulting from head losses in supply channels, which vary with the flow ...

French

Domaine(s)
  • Adduction d'eau (Alimentation en eau)
  • Traitement des eaux
OBS

[...] élimination des différences pouvant provenir des pertes de charge dans les canaux d’alimentation, variables avec les débits [...]

Spanish

Save record 4

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