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Что (кто) такое Blue - определение

THEOREM

Best linear unbiased estimator; Blue (statistics); Gauss-Markov theorem; BLUE; Gauss-Markov assumptions; Gauss–Markov assumptions; Best Linear Unbiased Estimator; Gauss markov theorem; Gauss-Markow least squares theorem; Gauss–Markov–Aitken theorem; Gauss-Markov-Aitken theorem; Linear estimator; Gauss–Markov model; Gauss-Markov model; Spherical error

Найдено результатов: 5510

blue

PRIMARY COLOUR BETWEEN PURPLE AND GREEN IN THE SPECTRUM

List of terms associated with the color blue; Blue (colour); Blueness; Pale Blue; Blae; Blue (Colour); Blue in human culture; Light-blue; Blue (color); Caspian blue; (0, 0, 255); Rgb(0, 0, 255); Blue color; 0000FF; Blue (politics)

(bluer, bluest, blues)

Frequency: The word is one of the 700 most common words in English.

1.

Something that is blue">blue is the colour of the sky on a sunny day.

There were swallows in the cloudless blue sky...

She fixed her pale blue eyes on her father's.

...colourful blues and reds.

COLOUR

2.

blue">The blues is a type of music which was developed by African American musicians in the southern United States. It is characterized by a slow tempo and a strong rhythm.

N-PLURAL: the N

3.

If you have got blue">the blues, you feel sad and depressed. (INFORMAL)

Interfering in-laws are the prime sources of the blues.

N-PLURAL: the N

4.

If you are feeling blue">blue, you are feeling sad or depressed, often when there is no particular reason. (INFORMAL)

There's no earthly reason for me to feel so blue.

= down

ADJ: v-link ADJ

5.

blue">Blue films, stories, or jokes are about sex.

...a secret stash of porn mags and blue movies.

ADJ: ADJ n

6.

If something happens blue">out of the blue, it happens unexpectedly.

One of them wrote to us out of the blue several years later.

PHRASE

7.

blue moon: see moon

Blue

PRIMARY COLOUR BETWEEN PURPLE AND GREEN IN THE SPECTRUM

List of terms associated with the color blue; Blue (colour); Blueness; Pale Blue; Blae; Blue (Colour); Blue in human culture; Light-blue; Blue (color); Caspian blue; (0, 0, 255); Rgb(0, 0, 255); Blue color; 0000FF; Blue (politics)

A language proposed by Softech to meet the DoD Ironman requirements which led to Ada. ["On the BLUE Language Submitted to the DoD", E.W. Dijkstra, SIGPLAN Notices 13(10):10-15 (Oct 1978)].

blue

PRIMARY COLOUR BETWEEN PURPLE AND GREEN IN THE SPECTRUM

List of terms associated with the color blue; Blue (colour); Blueness; Pale Blue; Blae; Blue (Colour); Blue in human culture; Light-blue; Blue (color); Caspian blue; (0, 0, 255); Rgb(0, 0, 255); Blue color; 0000FF; Blue (politics)

blue¹

¦ adjective (bluer, bluest)

1. of a colour intermediate between green and violet, as of the sky or sea on a sunny day.

(of a cat, fox, or rabbit) having fur of a smoky grey colour.

2. informal melancholy, sad, or depressed.

3. informal (of a film, joke, or story) with sexual or pornographic content.

4. Brit. informal politically conservative.

5. (of a ski run) of the second-lowest level of difficulty.

¦ noun

1. blue colour, pigment, or material.

(the blue) literary the sky or sea, or the unknown.

another term for bluing.

2. Brit. a person who has represented Cambridge University or Oxford University in a particular sport in a match between the two universities.

3. used in names of small butterflies with predominantly blue wings. [Polyommatus icarus (common blue) and related species.]

4. Austral./NZ informal a nickname for a red-headed person.

5. Austral./NZ informal an argument or fight.

¦ verb (blues, bluing or blueing, blued)

1. make or become blue.

2. chiefly historical wash (white clothes) with bluing.

Phrases

blue on blue Military denoting or relating to an attack made by one's own side that accidentally harms one's own forces: blue-on-blue incidents. [from the use of blue to indicate friendly forces in military exercises.]

once in a blue moon informal very rarely. [because a 'blue moon' is a phenomenon (due to atmospheric dust) that occurs only very rarely.]

out of the blue (or out of a clear blue sky) informal without warning; unexpectedly.

talk a blue streak N. Amer. informal speak continuously and at great length.

Derivatives

blueness noun

Origin

ME: from OFr. bleu, ult. of Gmc origin.

--------

blue²

¦ verb (blues, bluing or blueing, blued) Brit. informal, dated squander or spend recklessly.

Origin

C19: perh. a var. of blow¹.

blue

PRIMARY COLOUR BETWEEN PURPLE AND GREEN IN THE SPECTRUM

List of terms associated with the color blue; Blue (colour); Blueness; Pale Blue; Blae; Blue (Colour); Blue in human culture; Light-blue; Blue (color); Caspian blue; (0, 0, 255); Rgb(0, 0, 255); Blue color; 0000FF; Blue (politics)

n.

color

1) dark; light blue

something colored blue

2) a patch of blue

symbol of belonging to a team at Oxford or Cambridge

(BE)

3) to get, win one's blue

misc.

4) out of the blue ('unexpectedly')

blue

PRIMARY COLOUR BETWEEN PURPLE AND GREEN IN THE SPECTRUM

List of terms associated with the color blue; Blue (colour); Blueness; Pale Blue; Blae; Blue (Colour); Blue in human culture; Light-blue; Blue (color); Caspian blue; (0, 0, 255); Rgb(0, 0, 255); Blue color; 0000FF; Blue (politics)

blue">I. a.

blue">1.

Azure, cerulean, sapphirine, amethystine, sky-colored.

blue">2.

Livid, ghastly, pallid.

blue">3.

(Colloq.) Melancholy, dejected, dispirited, depressed, sad, glum, gloomy, mopish, downcast, desponding, downhearted, hypochondriac, hipped, chapfallen, low-spirited, cast down, in the dumps, with a long face, in the blues, down in the mouth.

blue">4.

(Colloq.) Dismal, depressing, doleful, gloomy, dispiriting, melancholy, disheartening.

blue">5.

Pedantic (said of women), on the blue-stocking order, sapient.

blue">II. n.

Azure, sky-color, cerulean, amethystine, sapphirine.

Blue

PRIMARY COLOUR BETWEEN PURPLE AND GREEN IN THE SPECTRUM

List of terms associated with the color blue; Blue (colour); Blueness; Pale Blue; Blae; Blue (Colour); Blue in human culture; Light-blue; Blue (color); Caspian blue; (0, 0, 255); Rgb(0, 0, 255); Blue color; 0000FF; Blue (politics)

·noun A pedantic woman; a bluestocking.

II. Blue ·pl Low spirits; a fit of despondency; melancholy.

III. Blue ·superl Low in spirits; melancholy; as, to feel blue.

IV. Blue ·superl Literary;

- applied to women;

- an abbreviation of bluestocking.

V. Blue ·superl Suited to produce low spirits; gloomy in prospect; as, thongs looked blue.

VI. Blue ·vt To make blue; to dye of a blue color; to make blue by heating, as metals, ·etc.

VII. Blue ·superl Having the color of the clear sky, or a hue resembling it, whether lighter or darker; as, the deep, blue sea; as blue as a sapphire; blue violets.

VIII. Blue ·superl Severe or over strict in morals; gloom; as, blue and sour religionists; suiting one who is over strict in morals; inculcating an impracticable, severe, or gloomy mortality; as, blue laws.

IX. Blue ·superl Pale, without redness or glare, - said of a flame; hence, of the color of burning brimstone, betokening the presence of ghosts or devils; as, the candle burns blue; the air was blue with oaths.

X. Blue ·noun One of the seven colors into which the rays of light divide themselves, when refracted through a glass prism; the color of the clear sky, or a color resembling that, whether lighter or darker; a pigment having such color. Sometimes, poetically, the sky.

Blue

PRIMARY COLOUR BETWEEN PURPLE AND GREEN IN THE SPECTRUM

List of terms associated with the color blue; Blue (colour); Blueness; Pale Blue; Blae; Blue (Colour); Blue in human culture; Light-blue; Blue (color); Caspian blue; (0, 0, 255); Rgb(0, 0, 255); Blue color; 0000FF; Blue (politics)

Blue is one of the three primary colours in the RYB colour model (traditional colour theory), as well as in the RGB (additive) colour model. It lies between violet and cyan on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colours; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called Tyndall effect explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective.

Blue has been an important colour in art and decoration since ancient times. The semi-precious stone lapis lazuli was used in ancient Egypt for jewellery and ornament and later, in the Renaissance, to make the pigment ultramarine, the most expensive of all pigments. In the eighth century Chinese artists used cobalt blue to colour fine blue and white porcelain. In the Middle Ages, European artists used it in the windows of cathedrals. Europeans wore clothing coloured with the vegetable dye woad until it was replaced by the finer indigo from America. In the 19th century, synthetic blue dyes and pigments gradually replaced organic dyes and mineral pigments. Dark blue became a common colour for military uniforms and later, in the late 20th century, for business suits. Because blue has commonly been associated with harmony, it was chosen as the colour of the flags of the United Nations and the European Union.

Surveys in the US and Europe show that blue is the colour most commonly associated with harmony, faithfulness, confidence, distance, infinity, the imagination, cold, and occasionally with sadness. In US and European public opinion polls it is the most popular colour, chosen by almost half of both men and women as their favourite colour. The same surveys also showed that blue was the colour most associated with the masculine, just ahead of black, and was also the colour most associated with intelligence, knowledge, calm, and concentration.

https://en.wikipedia.org/wiki/Blue

Blueness

PRIMARY COLOUR BETWEEN PURPLE AND GREEN IN THE SPECTRUM

List of terms associated with the color blue; Blue (colour); Blueness; Pale Blue; Blae; Blue (Colour); Blue in human culture; Light-blue; Blue (color); Caspian blue; (0, 0, 255); Rgb(0, 0, 255); Blue color; 0000FF; Blue (politics)

·noun The quality of being blue; a blue color.

Blae

PRIMARY COLOUR BETWEEN PURPLE AND GREEN IN THE SPECTRUM

List of terms associated with the color blue; Blue (colour); Blueness; Pale Blue; Blae; Blue (Colour); Blue in human culture; Light-blue; Blue (color); Caspian blue; (0, 0, 255); Rgb(0, 0, 255); Blue color; 0000FF; Blue (politics)

·adj Dark blue or bluish gray; lead-colored.

Oxford blue

UNIVERSITY SPORTS AWARD

Cambridge Blue; Cambridge blue; University Sports Blue; Oxford blue; Oxford Blue; Half blue; University sporting blue; Half Blue; University Sporting Blue; Blue (sports award); Full Blue; Full blue; Blue (Oxbridge); Half-Blue

¦ noun Brit.

1. a dark blue, typically with a purple tinge, adopted as the colour of Oxford University.

2. a person who has represented Oxford University at a particular sport in a match against Cambridge University.

Википедия

Gauss–Markov theorem

In statistics, the Gauss–Markov theorem (or simply Gauss theorem for some authors) states that the ordinary least squares (OLS) estimator has the lowest sampling variance within the class of linear unbiased estimators, if the errors in the linear regression model are uncorrelated, have equal variances and expectation value of zero. The errors do not need to be normal, nor do they need to be independent and identically distributed (only uncorrelated with mean zero and homoscedastic with finite variance). The requirement that the estimator be unbiased cannot be dropped, since biased estimators exist with lower variance. See, for example, the James–Stein estimator (which also drops linearity), ridge regression, or simply any degenerate estimator.

The theorem was named after Carl Friedrich Gauss and Andrey Markov, although Gauss' work significantly predates Markov's. But while Gauss derived the result under the assumption of independence and normality, Markov reduced the assumptions to the form stated above. A further generalization to non-spherical errors was given by Alexander Aitken.

https://en.wikipedia.org/wiki/Gauss–Markov theorem