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  2. Stairs - Wikipedia

    en.wikipedia.org/wiki/Stairs

    Riser-Tread formula: Sometimes the stair parameters will be something like riser plus tread equals 17–18 inches (432–457 mm); [38] another formula is 2 times riser + tread equals 24.6 inches (625 mm), the length of a stride. [14] Thus a 7 inches (178 mm) rise and a 10.6 inches (269 mm) tread exactly meets this code.

  3. Stair tread - Wikipedia

    en.wikipedia.org/wiki/Stair_tread

    A stair tread is the horizontal portion of a set of stairs on which a person walks. The tread can be composed of wood, metal, plastic, or other materials. In residential settings, treads can be covered in carpeting. Stair treads can come in non-slip varieties, particularly in commercial or industrial locations. [1]

  4. Steel square - Wikipedia

    en.wikipedia.org/wiki/Steel_square

    Theoretical rise and run of stringer, placement of square, marking of tread and rise, dropping the stringer, ABC=90°, total rise of stringer = 2R-T, total run of stringer = 2AB. Stairs usually consist of three components. They are the stringer, the tread and the riser. The stringer is the structural member that carries the load of the ...

  5. Quantization (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Quantization_(signal...

    Mid-tread quantizers have a zero-valued reconstruction level (corresponding to a tread of a stairway), while mid-riser quantizers have a zero-valued classification threshold (corresponding to a riser of a stairway). [9] Mid-tread quantization involves rounding. The formulas for mid-tread uniform quantization are provided in the previous section ...

  6. Step function - Wikipedia

    en.wikipedia.org/wiki/Step_function

    The Heaviside step function is an often-used step function.. A constant function is a trivial example of a step function. Then there is only one interval, =. The sign function sgn(x), which is −1 for negative numbers and +1 for positive numbers, and is the simplest non-constant step function.

  7. 2008-03-26 Commodities are No Country for Old Men

    images.huffingtonpost.com/2008-04-09-20080326...

    Commodities are No Country for Old Men By Richard Thomas “Never under-estimate the predictability of stupidity” says Bullet-Tooth Tony from Guy Ritchie’s