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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Mean wind speed is estimated assuming a sea level elevation and a Weibull distribution of wind speeds with a shape factor(k) of 2. 0. The actual mean wind speed may differ from these estimated values by as much as 20 [percent], depending on the actual wind speed distribution... and elevation above sea level.  1, record 1, English, - actual%20mean%20wind%20speed

Record 1,  Textual support,  French

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

A statistical model, namely used to establish wind surveys, that is based upon the probability distribution function.  3, record 2, English, - Weibull%20distribution%20model

Record number: 2, Textual support number: 1 CONT

A generalized Weibull model that allows instantaneous or early failures is modified so that the model can be expressed as a mixture of the uniform distribution and the Weibull distribution. Properties of the resulting distribution are derived; in particular, the probability density function, survival function, and the hazard rate function are obtained. Some selected plots of these functions are also presented.  2, record 2, English, - Weibull%20distribution%20model

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Modèle statistique, utilisé notamment pour l'étude des relevés éoliens, qui s'appuie sur la fonction de probabilité.  3, record 2, French, - mod%C3%A8le%20de%20Weibull

Record number: 2, Textual support number: 1 CONT

Cette étude présente un logiciel développé dans notre laboratoire permettant l'analyse du potentiel énergétique éolien à partir des mesures de vitesses de vent et en utilisant le modèle de Weibull à deux paramètres. L'objectif de l'étude est de déterminer pour un site donné, les paramètres du modèle de Weibull pour une année et pour chaque mois afin d'évaluer les quantités d'énergies récupérables et produites par un aérogénérateur donné.  4, record 2, French, - mod%C3%A8le%20de%20Weibull

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Wind energy is the world's fastest growing renewable source of electricity … the atmospheric flows are strongly volatile, and therefore, the average wind speed at a given location is a very poor predictor of the energy output of a wind turbine. The basic requirement for wind power estimates is an adequate characterization of the empirical probability distribution of wind speeds since wind direction is less important because of the well developed methods of yaw control for modern turbines. The statistical description is highly simplified when a measured histogram can be accurately fitted by an analytical probability density function(PDF) with a few parameters. The traditional approach of modeling the wind speed PDF is based on the Rayleigh and the more flexible Weibull distributions. However, several authors noted that Weibull fits of empirical data have low quality at several locations, mostly over land.  4, record 3, English, - wind%20probability%20density%20function

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

[…] avant la réalisation d’un parc éolien, le développeur de projet doit pouvoir évaluer le potentiel de son site et la répartition optimale des machines. Les données utilisées sont généralement des valeurs moyennées sur 10 minutes qui permettent d’établir les fonctions densité de probabilité PDF (probability density function) du vent en utilisant les occurrences de rencontrer des vitesses pour une plage de vent donnée, par exemple de 1 m/s. Représentées sous la forme d’un histogramme, ces PDF peuvent être approchées par une fonction de distribution cumulative dite de Weibull […]  1, record 3, French, - fonction%20densit%C3%A9%20de%20probabilit%C3%A9%20du%20vent

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

A parameter used to describe the variation of a Weibull distribution about the mean.  2, record 4, English, - shape%20parameter

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Paramètre utilisé pour décrire la variation d'une distribution de Weibull par rapport à la moyenne.  2, record 4, French, - param%C3%A8tre%20de%20forme

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

A distribution used for random variables which are constrained to be greater or equal to 0.  1, record 5, English, - Weibull%20distribution

Record number: 5, Textual support number: 1 OBS

It is characterized by two parameters: shape and scale.  1, record 5, English, - Weibull%20distribution

Record number: 5, Textual support number: 2 OBS

The Weibull distribution is one of the few distributions which can be used to model data which is negatively skewed.  1, record 5, English, - Weibull%20distribution

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Loi statistique qui permet de déterminer les variations de la vitesse du vent sur un site donné.  4, record 5, French, - distribution%20de%20Weibull

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

A parameter describing the height of a Weibull distribution.  3, record 6, English, - scale%20parameter

Record number: 6, Textual support number: 1 CONT

... a population standard deviation is a scale parameter, whereas a population mean is not. Generally, parameters which are given by powers of scale parameters are also referred to as scale parameters; in this sense, a population variance would be considered a scale parameter.  4, record 6, English, - scale%20parameter

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

Le paramètre de dispersion : la détermination de la valeur centrale ne suffit pas à caractériser une série statistique. Les diverses observations peuvent être plus ou moins groupées autour de la valeur centrale et il faut être capable d'exprimer, par un seul nombre, cette dispersion.  2, record 6, French, - param%C3%A8tre%20d%27%C3%A9chelle

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 DEF

That value of wind speed which is exceeded half the time.  2, record 7, English, - median%20wind%20speed

Record number: 7, Textual support number: 1 CONT

The description of wind speeds is an example of the use of the Weibull distribution to describe natural phenomena. Each part of the planet has it's own parameters for a Weibull distribution to describe the wind speed pattern in that place. On the basis of that you can calculate the number of days a year, or hours a day, with wind speeds above a certain force, or the mean wind speed, or the median wind speed, halve the days in a year have a wind speed below the median force, halve the days above. The Weibull distribution is very practical in this area because the distribution doesn’t allow for negative value's and it is easy to appropriately consider the fact that on most days there will be a bit of wind, on some days a lot and you have those days that there is way too much wind speed.  3, record 7, English, - median%20wind%20speed

Record number: 7, Textual support number: 1 OBS

median: When a series of ’n’ observations is arranged in order of magnitude, the central value (n odd), or the mean of the two central values (n even), is termed the "median". The median may differ appreciably from the "mean", in which case the frequency distribution is said to be "skew".  4, record 7, English, - median%20wind%20speed

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 OBS

La distribution de Weibull - vitesse utilisable. On s'est aperçu que la vitesse du vent à un endroit donné dessinait une courbe statistique nommé distribution de Weibull. On peut donc déduire, par des méthodes mathématiques connues la vitesse médiane, la vitesse moyenne, etc.  2, record 7, French, - vitesse%20m%C3%A9diane%20du%20vent

Record number: 7, Textual support number: 2 OBS

Description statistique des vitesses du vent. [...] le graphe, ci-dessus représenté, est une distribution de probabilité (distribution fréquentielle). La probabilité que le vent souffle à une vitesse quelconque (zéro inclus) étant obligatoirement égale à 100 % [...]. La moitié de la zone bleue se trouve à gauche de la ligne verticale noire située à 6,6 m/s. On dit alors que 6,6 m/s est la médiane de la distribution. Cela signifie que le vent souffle à moins de 6,6 m/s la moitié du temps, et à plus de 6,6 m/s pendant l'autre. [...] nous avons alors fixé la vitesse moyenne à 7 m/s.  3, record 7, French, - vitesse%20m%C3%A9diane%20du%20vent

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  French

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

A statistical distribution function used for describing precipitation, wind velocity and streamflow data.  1, record 9, English, - Weibull%20distribution

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 DEF

Fonction de distribution statistique décrivant les données relatives à la précipitation, la vitesse du vent et l'écoulement.  1, record 9, French, - distribution%20de%20Weibull

Record 9,  Textual support,  Spanish

Record number: 9, Textual support number: 1 DEF

Función de distribución estadística utilizada para describir datos de la precipitación, la velocidad del viento y el flujo.  1, record 9, Spanish, - distribuci%C3%B3n%20de%20Weibull

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 CONT

The Weibull distribution is a special case of the generalized gamma distribution.  1, record 10, English, - generalized%20gamma%20distribution

Record 10,  Textual support,  French

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 CONT

Methods for determining Weibull Parameters. Six methods for estimating the Weibull distribution parameters have been discussed....  1, record 11, English, - Weibull%20parameter

Record 11,  Textual support,  French

Record 11,  Textual support,  Spanish