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  2. Saddlepoint approximation method - Wikipedia

    en.wikipedia.org/wiki/Saddlepoint_approximation...

    The saddlepoint approximation method, initially proposed by Daniels (1954) [1] is a specific example of the mathematical saddlepoint technique applied to statistics, in particular to the distribution of the sum of independent random variables.

  3. ASHRAE 55 - Wikipedia

    en.wikipedia.org/wiki/ASHRAE_55

    The third method is to add all the clo value of each garment to match the clothing ensemble in question. [1] The fourth method described in ANSI/ASHRAE Standard 55 can be used to determine the clothing insulation in mechanically conditioned spaces. This method is based on the concept that when occupants choose their clothing according to their ...

  4. Cooling load temperature difference calculation method

    en.wikipedia.org/wiki/Cooling_load_temperature...

    The CLTD/CLF/SCL (cooling load temperature difference/cooling load factor/solar cooling load factor) cooling load calculation method was first introduced in the 1979 ASHRAE Cooling and Heating Load Manual (GRP-158) [1] The CLTD/CLF/SCL Method is regarded as a reasonably accurate approximation of the total heat gains through a building envelope ...

  5. UNIFAC - Wikipedia

    en.wikipedia.org/wiki/UNIFAC

    In statistical thermodynamics, the UNIFAC method (UNIQUAC Functional-group Activity Coefficients) [1] is a semi-empirical system for the prediction of non-electrolyte activity in non-ideal mixtures. UNIFAC uses the functional groups present on the molecules that make up the liquid mixture to calculate activity coefficients .

  6. Trachtenberg system - Wikipedia

    en.wikipedia.org/wiki/Trachtenberg_system

    Trachtenberg called this the 2 Finger Method. The calculations for finding the fourth digit from the example above are illustrated at right. The arrow from the nine will always point to the digit of the multiplicand directly above the digit of the answer you wish to find, with the other arrows each pointing one digit to the right.

  7. Miedema's model - Wikipedia

    en.wikipedia.org/wiki/Miedema's_model

    Free web based applications include Entall [6] and Miedema Calculator. [7] The latter was reviewed and improved in 2016, with an extension of the method. [8] [9] The original Algol program [10] was ported to Fortran. [11]

  8. How to refinance your ARM into a fixed-rate mortgage - AOL

    www.aol.com/finance/refinance-arm-fixed-rate...

    At a glance: ARM vs. fixed-rate mortgage. Adjustable-rate mortgage. Fixed-rate mortgage. Down payment. Typically 3.5% to 20%. Typically 3% to 20%. Initial interest rate

  9. Heckman correction - Wikipedia

    en.wikipedia.org/wiki/Heckman_correction

    The Heckman correction is a statistical technique to correct bias from non-randomly selected samples or otherwise incidentally truncated dependent variables, a pervasive issue in quantitative social sciences when using observational data. [1]