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CROSS-CORRELATION [11 records]

Record 1 2026-02-19

English

Subject field(s)
  • Electrodiagnosis
  • The Eye
CONT

Multifocal ERGs(mfERGs) are obtained by stimulating the central 30° to 50° of the retina with a contiguous array of flickering hexagons. Each element is independently alternated between black(off) and white(illuminated) according to a pseudorandom binary order called the m-sequence. Multiple hexagons are simultaneously alternated, but the m-sequence determines that no pattern of simultaneous hexagon stimulation is repeated twice in the sequence. Cross-correlation techniques associate ERG activity with localized retinal areas and provide a topology(map) of the test field's retinal sensitivity.

CONT

In general, full-field ERGs [electroretinograms] better quantify whole-retina disorders such as RP [retinitis pigmentosa] and cone or rod dystrophies, whereas mfERGs are best depicting field loss in the central 40 degrees of the visual field.

Key term(s)
  • multifocal electro-retinogram

French

Domaine(s)
  • Électrodiagnostiques
  • Oeil
CONT

L'électrorétinogramme multifocal [...] fournit une topographie fonctionnelle de la rétine grâce à un enregistrement simultané d'ERG [électrorétinogrammes] issus de plusieurs zones rétiniennes stimulées de façon pseudo-aléatoire permettant par un traitement mathématique de calculer la réponse issue de chacune des zones unitaires stimulées [...]

Key term(s)
  • électro-rétinogramme multifocal

Spanish

Save record 1

Record 2 2025-02-11

English

Subject field(s)
  • Computer Mathematics
  • Computer Programs and Programming
  • Artificial Intelligence
CONT

The purpose of the cross-correlation algorithm is to calculate the time difference of [the] upstream and downstream signal.

French

Domaine(s)
  • Mathématiques informatiques
  • Programmes et programmation (Informatique)
  • Intelligence artificielle
CONT

En utilisant un algorithme de corrélation croisée sur une séquence d'images prises à courts intervalles de temps, il est possible de décrire de façon précise le changement de position de groupes de marqueurs.

Spanish

Campo(s) temático(s)
  • Matemáticas para computación
  • Programas y programación (Informática)
  • Inteligencia artificial
Save record 2

Record 3 2017-01-05

English

Subject field(s)
  • Statistics
  • Econometrics
OBS

cross-correlation of business cycles : term extracted from the “Glossaire de l'économie” and reproduced with permission of the Organisation for Economic Co-operation and Development.

Key term(s)
  • cross-correlation of business cycle

French

Domaine(s)
  • Statistique
  • Économétrie
OBS

corrélation des cycles économiques entre pays : terme extrait du «Glossaire de l’économie» et reproduit avec l’autorisation de l’Organisation de coopération et de développement économiques.

Spanish

Save record 3

Record 4 2016-05-31

English

Subject field(s)
  • Radio Transmission and Reception
  • Marine and River Navigation Aids
  • Sonar and Underwater Detection (Military)
CONT

The basic defect of the receiving system was its high sensitivity to the reverberation generated by the set's very high power transmissions and the use of rapid scanning to achieve omnidirectional coverage on a single transmission. This effectively precluded the separation of reverberation and noise backgrounds during processing. The only solution to this problem lay in the use of preformed receiving beams(as in Type 177), which allowed this separation, and, indeed, allowed parallel processing of narrow-band channels(cross-correlation or matched-filter processing) to reduce detection threshold and extract [Doppler] information.

French

Domaine(s)
  • Émission et réception radio
  • Aides à la navigation fluviale et maritime
  • Sonar et détection sous-marine (Militaire)

Spanish

Save record 4

Record 5 2012-02-09

English

Subject field(s)
  • Vulcanology and Seismology
  • Geophysics
DEF

A measure of degree of similarity between two functions.

CONT

Cross-correlation of two digital waveforms involves cross-multiplication of the individual waveform elements and summation of the cross-multiplication products over the common time interval of the waveforms.

French

Domaine(s)
  • Volcanologie et sismologie
  • Géophysique

Spanish

Save record 5

Record 6 2011-10-20

English

Subject field(s)
  • Artificial Intelligence
  • Computer Graphics
  • Applications of Automation
  • Photoelectricity and Electron Optics
DEF

A template matching operation done by using the magnitude of the cross-correlation function to measure the degree of matching.

OBS

The same definition was adopted in ISO/IEC JTC N1746, 1995.

French

Domaine(s)
  • Intelligence artificielle
  • Infographie
  • Automatisation et applications
  • Photo-électricité et optique électronique
DEF

Appariement à base de modèles dont on mesure le degré à l'aide d'une fonction d'intercorrélation. [ISO/CEI JTC N1746, 1995]

Spanish

Save record 6

Record 7 2002-07-15

English

Subject field(s)
  • Air Navigation Aids
DEF

A class of unique codes presently used by GPS, which exhibit bounded cross-correlation and off peak auto-correlation values. [Definition officially approved by ICAO. ]

OBS

Gold code: term officially approved by the International Civil Aviation Organization (ICAO).

French

Domaine(s)
  • Aides à la navigation aérienne
DEF

Ensemble de codes uniques utilisé actuellement par le GPS et caractérisé par de faibles valeurs de corrélation croisée et d'autocorrélation hors crête. [Définition uniformisée par l'OACI.]

OBS

code Gold : terme uniformisé par l'Organisation de l'aviation civile internationale (OACI).

Spanish

Campo(s) temático(s)
  • Ayuda para la navegación aérea
DEF

Una clase de códigos exclusivos utilizados en la actualidad por el GPS, que ostenta una correlación cruzada limitada y valores de autocorrelación fuera del máximo. [Definición aceptada oficialmente por la OACI.]

OBS

Código áureo: término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI).

Save record 7

Record 8 2001-05-08

English

Subject field(s)
  • Titles of International Programs
  • Spacecraft
  • Magnetism and Electromagnetism
OBS

The Spatio-Temporal Analysis of Field Fluctuations(STAFF) experiment on the four Cluster spacecraft consists of a three-axis search coil magnetometer to measure magnetic fluctuations up to 4 kHz, and a spectrum analyser to calculate on-board each satellite the auto-and cross-correlation coefficients of the three magnetic and two electric components of the electromagnetic field.

French

Domaine(s)
  • Titres de programmes internationaux
  • Engins spatiaux
  • Magnétisme et électromagnétisme
OBS

Programme qui comprend quatre satellites destinés à la mesure des interfaces entre la magnétosphère terrestre et le vent solaire.

Spanish

Save record 8

Record 9 2000-06-20

English

Subject field(s)
  • Air Transport
OBS

cross-correlation calculation : term officially approved by the International Civil Aviation Organization(ICAO).

Key term(s)
  • cross correlation calculation

French

Domaine(s)
  • Transport aérien
OBS

calcul de la corrélation croisée : terme uniformisé par l'Organisation de l'aviation civile internationale (OACI).

Spanish

Campo(s) temático(s)
  • Transporte aéreo
OBS

cálculo de correlación cruzada : término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI).

Save record 9

Record 10 1995-06-30

English

Subject field(s)
  • Silviculture
  • Chronology
DEF

The synchronisation of two ring patterns by means of a good visual agreement backed by a sound statistical test of significance, for the purpose of chronology building, comparison of chronologies, or dating.

CONT

The process of comparing the patterns of wide and narrow annual rings in one tree with those in another is called cross-dating and is the fundamental basis of dendrochronology.

CONT

Cross-dating means the synchronisation of two ring patterns by means of a good visual agreement backed by a sound statistical test of significance.

CONT

Any dendrochronological study involves the establishment of cross-correlations between ring patterns. This is true for chronology extension, dating against floating, or standard chronologies and comparison of chronologies from different areas.... Figure 2 shows a cross-correlation established on the basis of a signature pattern occurring in each of three Irish oak samples. The wide signature ring for the year A. D. 1580 is indicated in each case.

French

Domaine(s)
  • Sylviculture
  • Chronologie
DEF

Superposition de courbes dendrochronologiques dans leurs positions de correspondance maximale, pour des fins de constitution de chronologies, de vérification de chronologies ou de datation.

CONT

On peut donc, après avoir mesuré l'épaisseur des cernes sous microscope puis établi des diagrammes, comparer les rythmes de croissance d'une série d'échantillons dont on veut vérifier la contemporanéité. Cette opération visant ainsi l'établissement de chronologies relatives, se nomme «synchronisation» ou «interdatation» et est facilitée lorsqu'apparaissent des pics ou dépressions plus systématiquement marqués.

CONT

La synchronisation ou datation croisée consiste à identifier dans deux ou plusieurs courbes dendrochronologiques les séquences contemporaines. Cette synchronisation est basée sur un fait d'observation : quand on compare plusieurs courbes, le maximum de ressemblance est généralement atteint lorsqu'on les superpose exactement, années contemporaines sur années contemporaines. Dans ce cas, la plupart des points remarquables (maxima et minima) coïncident, de même que le sens de la variation d'épaisseur entre cernes consécutifs (variation positive ou négative).

Spanish

Save record 10

Record 11 1990-12-10

English

Subject field(s)
  • Electronic Devices
DEF

A function that gives a measure of the similarity between signals and is related to the cross-correlation function.

French

Domaine(s)
  • Dispositifs électroniques

Spanish

Save record 11

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