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Form 20-F

In the USA, the form required by the Securities and Exchange Commission for the filing of annual results by non-US companies.

XML

XML  

A simplified form of SGML. See feature XML. See also SAX, SOAP, XPATH, XQUERY.http://www.w3.org/XML The W3C's XML page
bootstrap

bootstrap  

A computer-intensive resampling method for estimating the properties of a distribution while making minimal assumptions. In this respect it resembles the jackknife. The idea is simple. Suppose we ...
t-distribution

t-distribution   Quick reference

The Concise Oxford Dictionary of Mathematics (5 ed.)

Reference type:
Subject Reference
Current Version:
2014

...-distribution The continuous probability distribution of a random variable formed from the ratio of a random variable with a standard normal distribution and the square root of a random variable with a chi-squared distribution divided by its degrees of freedom. Alternatively, it is formed from the square root of a random variable with an F-distribution in which the numerator has one degree of freedom. The shape, which depends on the degrees of freedom, is similar in shape to a standard normal distribution, but is less peaked and has fatter tails. The...

windchill (factor)

windchill (factor)   Quick reference

A Dictionary of Weights, Measures, and Units

Reference type:
Subject Reference
Current Version:
2004

...speed, constructed to reflect the greater freezing effect, particularly on hairless human skin and flesh, of low temperatures when accompanied by significant wind. The initial form consisted merely of subtracting the Fahrenheit temperature from the wind speed measured in miles per hour, e.g. a wind of 20 m.p.h. and a temperature of -30°F gave a windchill of 50, equatable with -50°F in calm conditions. The real effect is far from linearly additive in such a simple (and convenient) manner. Careful study has produced more complex formulations, convertible to a...

temperature

temperature   Quick reference

A Dictionary of Weights, Measures, and Units

Reference type:
Subject Reference
Current Version:
2004

...419.67∼ -32 -20 253.15 -4 455.67∼ -16 -17.78∼ 255.37∼ 0 459.67∼ -14.22∼ 0 273.15 32 491.67∼ 0 20 293.15 68 527.67∼ 16 40 313.15 104 563.67∼ 32 60 333.15 140 599.67∼ 48 80 353.15 176 635.67∼ 64 100 373.15 212 671.67∼ 80 Relevant conversion formulae between the Celsius, kelvin, Fahrenheit, and Rankine scales, represented respectively by c , k , f , and r , are: c = k - 273.15 c = ( f - 32)5/9 c = ( r - 491.67) 5/9 k = c + 273.15 k = ( f - 32)5/9 + 273.15 k = ( r - 491.67)5/9 + 273.15 f = 9 c /5 + 32 f = 9( k - 273.15)/5 + 32 f = r -...

horse

horse   Quick reference

A Dictionary of Weights, Measures, and Units

Reference type:
Subject Reference
Current Version:
2004
Subject:
Science and technology, Mathematics and Computer Science, Physics
Length:
244 words
Illustration(s):
1

...in the UK up to 1947 was of the order of 8 to 20; this was a notional calculation, proportional to the aggregate cross-sectional area of the cylinders, i.e. = 0.4 × D 2 ⋅ N where D is the cylinder diameter in inches and N the number of cylinders. If P is the maximal pressure on the pistons in pounds per square inch and S is the stroke length in inches, then Besides the original unit, there is the rounded metric horse power = 75 kg-f⋅m⋅s -1 (0.986 320∼ hp, 0.735 499∼ kWand several context-specific forms, namely: electric horse power =0.746 kW, water...

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