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CORRELATION FUNCTION [14 records]

Record 1 2021-07-29

English

Subject field(s)
  • Optics
  • Computer Graphics
  • Photography
CONT

… optical correlation analysis is based on the all-optical performance of the inner product(U|T) relation between the unknown field U and a designed transmission function T, realized by the holographic correlation filter …

French

Domaine(s)
  • Optique
  • Infographie
  • Photographie

Spanish

Save record 1

Record 2 2017-02-15

English

Subject field(s)
  • Statistics
  • Econometrics
  • Mathematics
DEF

A variable not dependent on another variable for its value. For example, in a time series of wheat output per year and rainfall per year, wheat output is the dependent variable and rainfall the independent variable.

CONT

When the independent variables of a regression function are random variables, there is an equivalence between correlation coefficients and regression coefficients; after one set has been defined, the definition of the other follows automatically....

OBS

Compare with "dependent variable".

French

Domaine(s)
  • Statistique
  • Économétrie
  • Mathématiques
DEF

Dans une analyse de régression, variable (généralement désignée par la lettre x) sur laquelle le décideur peut exercer un contrôle, par exemple la quantité d'articles inclus dans un certain nombre de lots en vue de déterminer la productivité de la main d'œuvre.

OBS

On utilise les termes «variable prédictive» et «prédicteur» dans les cas où la (ou les) variable(s) indépendante(s) est (sont) vue(s) comme une (des) variable(s) dont la valeur permet de prévoir celle d'une autre variable déjà donnée.

Spanish

Campo(s) temático(s)
  • Estadística
  • Econometría
  • Matemáticas
DEF

Variable cuyo valor no es una función directa de alguna otra variable ni depende de otra variable.

OBS

La variable independiente general se representa en forma gráfica como la abcisa (línea horizontal) sobre un eje.

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Record 3 2011-06-07

English

Subject field(s)
  • Computer Graphics
  • Mathematics
CONT

The fractal dimension of random structures can also be estimated from their density-density correlation function c(r).

French

Domaine(s)
  • Infographie
  • Mathématiques
DEF

Fonction permettant d'évaluer la similitude.

Spanish

Campo(s) temático(s)
  • Gráficos de computadora
  • Matemáticas
Save record 3

Record 4 2002-03-18

English

Subject field(s)
  • Research Experiments in Space
  • Aerospace Medicine
CONT

The Pinch Force Dynamometer(PFD) is a stowable hand held device capable of measuring instantaneous strength of the thumb and opposing finger or groupings of fingers as a function of time. The principle components of the PFD are a pinch force transducer, instrumentation amplifier, and associated cables. Dynamic voltage representing instantaneous finger(s) pinch strength as a function of time is taken from the output of the instrumentation amplifier and sent to a laptop computer or to a data acquisition system for data manipulation, display, correlation with other data sources, and/or storage.

OBS

pinch force dynamometer; PFD: term and abbreviation officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Travaux de recherche dans l'espace
  • Médecine aérospatiale
CONT

La mesure de la force d'un astronaute est l'un des paramètres fondamentaux utilisés pour évaluer ses performances physiques et l'effet de l'apesanteur pendant les missions spatiales prolongées. Sous contrat de l'Agence spatiale européenne, une société a développé un système pour mesurer la force de la main et celle du pouce, utilisé lors d'expériences embarquées. Le système se compose d'un dynamomètre de poigne de la main (HGD) et d'un dynamomètre de force de pincement (PFD) ainsi que d'une unité de connexion pour raccorder l'équipement à l'alimentation (28Vcc) et à un ordinateur.

OBS

dynamomètre de force de pincement; PFD: terme et abréviation uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

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Record 5 2002-03-18

English

Subject field(s)
  • Orbital Stations
  • Aerospace Medicine
CONT

The Handgrip Dynamometer(HGD) is a stowable hand held device capable of measuring instantaneous hand strength as a function of time. The principle components of the HGD are a handgrip, instrumentation amplifier, and associated cables. Dynamic voltage representing instantaneous hand strength is taken from the output of the instrumentation amplifier and sent to a laptop computer or to a data acquisition system for data manipulation, display, correlation with other data sources, and/or storage.

OBS

handgrip dynamometer; HGD: term and abbreviation officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Stations orbitales
  • Médecine aérospatiale
OBS

La mesure de la force d'un astronaute est l'un des paramètres fondamentaux utilisés pour évaluer ses performances physiques et l'effet de l'impesanteur pendant les missions spatiales prolongées. Sous contrat de l'Agence spatiale européenne, une société a développé un système pour mesurer la force de la main et celle du pouce, utilisé lors d'expériences embarquées. Le système se compose d'un dynamomètre [HGD) et d'un dynamomètre de force de pincement (PFD) ainsi que d'une unité de connexion pour raccorder l'équipement à l'alimentation (28VCC) et à un ordinateur.

OBS

dynamomètre à poignée; HGD : terme et abréviation uniformisés par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

PHR

Dynamomètre à poignée et à pince HGD/PFD.

Spanish

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Record 6 2002-02-21

English

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

A device that detects weak signals in noise per performing an electronic operation which approximates the computation of a correlation function.

OBS

Examples include the autocorrelator and crosscorrelator.

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
DEF

Dispositif mesurant la cohérence entre deux formes d'ondes afin de détecter des signaux faibles perdus dans le bruit.

Spanish

Campo(s) temático(s)
  • Guía radárica, radioguía y radiogoniometría
DEF

Aparato capaz de calcular y visualizar la función de correlación de dos señales.

OBS

Esta función es una característica cifrada de la dependencia de la relación entre esas dos señales. Ejemplos son el autocorrelador y el correlador cruzado.

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Record 7 2001-04-01

English

Subject field(s)
  • Space Centres
CONT

The Handgrip Dynamometer (HGD) is a hand held device capable of measuring instantaneous hand strength as a function of time for periods of up to 300 seconds...The Pinch Force Dynamometer (PFD) is a hand held device capable of measuring instantaneous strength of the thumb and opposing finger or groupings of fingers as a function of time for periods of up to 300 sec. length.

OBS

The principle components of the HGD are a transducer capable of measuring the handgrip force, instrumentation amplifier, and associated cables. Dynamic voltage representing instantaneous hand strength is taken from the output of the instrumentation amplifier and sent to a laptop computer or to a data acquisition system for data manipulation, display, correlation with other data sources, and/or storage... The principle components of the PFD are a pinch force transducer, instrumentation amplifier, and associated cables. Dynamic voltage representing instantaneous finger(s) pinch strength as a function of time will be taken from the output of the instrumentation amplifier and sent to a laptop computer or to a data acquisition system for data manipulation, display, correlation with other data sources, and/or storage.

Key term(s)
  • Hand grip dynanometer/Pinch force dynanometer

French

Domaine(s)
  • Centres spatiaux

Spanish

Save record 7

Record 8 2000-11-24

English

Subject field(s)
  • Optics
DEF

A function that describes the correlation between properties of a system at different times.

French

Domaine(s)
  • Optique
Key term(s)
  • fonction de corrélation temps

Spanish

Save record 8

Record 9 2000-11-14

English

Subject field(s)
  • Physics
DEF

Expressions for transport coefficients like viscosity, thermal conductivity, and rate constants in terms of time correlation function.

French

Domaine(s)
  • Physique

Spanish

Save record 9

Record 10 1999-09-23

English

Subject field(s)
  • Statistical Methods
DEF

A graph of the serial correlation within a time series plotted as a function of the time lag between observations.

OBS

for "correlation diagram" : [The] term [correlogram] was introduced by Wold in 1938 but the diagram was earlier used by Yule, who called it a "correlation diagram".

French

Domaine(s)
  • Méthodes statistiques

Spanish

Campo(s) temático(s)
  • Métodos estadísticos
DEF

En análisis de series temporales, el gráfico del coeficiente de correlación serial de orden k como ordenada, tomando como abcisa los valores de k.

Save record 10

Record 11 1998-08-05

English

Subject field(s)
  • Statistical Methods
DEF

An extension of the concept of serial correlation to two time series. It is a function of the time lag r, that is, it measures the correlation between the values of one series at times [t sub 1, t sub 2, t sub 3..., ] and those of the other series at times [t sub 1 + r, t sub 2 + r, t sub 3 + r... ]

Key term(s)
  • cross-lagged correlation

French

Domaine(s)
  • Méthodes statistiques

Spanish

Save record 11

Record 12 1991-01-23

English

Subject field(s)
  • Computer Graphics
CONT

A Gaussian frequency correlation function.

French

Domaine(s)
  • Infographie
CONT

Fonction gaussienne de corrélation de fréquence.

Spanish

Save record 12

Record 13 1990-02-06

English

Subject field(s)
  • Mathematics
  • Computer Graphics
DEF

The so called density-density or pair correlation function... is the expectation value of the event that two points separated by r belong to the structure.

French

Domaine(s)
  • Mathématiques
  • Infographie
OBS

Voir "fonction d'auto-corrélation"

OBS

Voir "fonction de corrélation".

Spanish

Save record 13

Record 14 1989-12-18

English

Subject field(s)
  • Computer Graphics
  • Mathematics
CONT

We can think of centers - attractors - which compete for influence on the plane: an initial point is driven by the process to one center or another, or it is on the boundary and cannot decide. If the parameter is changed, the regions belonging to the attractors change, and with them the boundaries. It can happen that the boundary falls to dust, and this decay is one of the most important scenarios.

CONT

An exponent describes the algebraic decay of the ordinary radial correlation function.

CONT

Power law (algebraic) decay.

French

Domaine(s)
  • Infographie
  • Mathématiques
OBS

Le caractère dissipatif de ces équations tend à dégénérer. Des propriétés inertielles apparaissent alors, associées à l'émergence d'effets coopératifs de conservation de la métrique.

Spanish

Save record 14

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