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  2. The Magical Number Seven, Plus or Minus Two - Wikipedia

    en.wikipedia.org/wiki/The_Magical_Number_Seven...

    [2] [3] [4] It was written by the cognitive psychologist George A. Miller of Harvard University's Department of Psychology and published in 1956 in Psychological Review. It is often interpreted to argue that the number of objects an average human can hold in short-term memory is 7 ± 2. This has occasionally been referred to as Miller's law. [5 ...

  3. Greyhawk (supplement) - Wikipedia

    en.wikipedia.org/wiki/Greyhawk_(supplement)

    The original rules for Dungeons & Dragons were published by TSR in 1974, but were limited in scope: the character classes and monsters listed were small in number; and for combat rules, players needed to have a copy of Chainmail, a rulebook for miniatures wargames published by Guidon Games in 1971. Over the next two years, TSR bolstered the ...

  4. Slide rule scale - Wikipedia

    en.wikipedia.org/wiki/Slide_rule_scale

    Keuffel and Esser 7" slide rule (5" scale, 1954) [1] A slide rule scale is a line with graduated markings inscribed along the length of a slide rule used for mathematical calculations. The earliest such device had a single logarithmic scale for performing multiplication and division, but soon an improved technique was developed which involved ...

  5. Newton–Cotes formulas - Wikipedia

    en.wikipedia.org/wiki/Newton–Cotes_formulas

    It is assumed that the value of a function f defined on [,] is known at + equally spaced points: < < <.There are two classes of Newton–Cotes quadrature: they are called "closed" when = and =, i.e. they use the function values at the interval endpoints, and "open" when > and <, i.e. they do not use the function values at the endpoints.

  6. Exponentiation - Wikipedia

    en.wikipedia.org/wiki/Exponentiation

    The binary number system expresses any number as a sum of powers of 2, and denotes it as a sequence of 0 and 1, separated by a binary point, where 1 indicates a power of 2 that appears in the sum; the exponent is determined by the place of this 1: the nonnegative exponents are the rank of the 1 on the left of the point (starting from 0), and ...

  7. Choking emergency? How to do the Heimlich maneuver - AOL

    www.aol.com/choking-emergency-heimlich-maneuver...

    Boy, 8, Saves Choking Friend With Heimlich Maneuver: See The Video. Mass General Brigham, a health care system in Boston, Massachusetts, shared on its website step-by-step guidance on how to ...

  8. Fed officials signal more gradual approach to lowering rates ...

    www.aol.com/finance/fed-officials-signal-more...

    The unemployment rate stands at 4.2% as of November. Friday brings a fresh reading on the labor market, with economists expecting the jobless rate to hold steady at 4.2%.

  9. Critical positivity ratio - Wikipedia

    en.wikipedia.org/wiki/Critical_positivity_ratio

    The derived combination of expressions and default parameters led them to conclude that a critical ratio of positive to negative affect of exactly 2.9013 separated flourishing from languishing individuals, and to argue that the ideal positivity/negativity ratio lies between 2.9013 and an upper limit ratio of 11.6346. Hence, they claimed that ...