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  2. General Aptitude Test Battery - Wikipedia

    en.wikipedia.org/wiki/General_Aptitude_Test_Battery

    Beginning in 1981 with little publicity, the United States Employment Service began "race-norming" the reports of results of the GATB. [4]The aim of this practice was to meet affirmative-action goals and to counteract alleged racial bias in aptitude tests administered to job applicants,. [5]

  3. Defect concentration diagram - Wikipedia

    en.wikipedia.org/wiki/Defect_concentration_diagram

    Concentration diagram of Cholera deaths 1854 in London (John Snow (1813-1858)) The defect concentration diagram (also problem concentration diagram [1]) is a graphical tool that is useful in analyzing the causes of the product or part defects. [2]

  4. Lexis diagram - Wikipedia

    en.wikipedia.org/wiki/Lexis_diagram

    Lexis diagram showing the cohort of 2003-born persons in green, and the year 2005 in red. In demography, a Lexis diagram (named after economist and social scientist Wilhelm Lexis) is a two-dimensional diagram used to represent events (such as births or deaths) that occur to individuals belonging to different cohorts.

  5. Sussman anomaly - Wikipedia

    en.wikipedia.org/wiki/Sussman_Anomaly

    The Sussman anomaly is a problem in artificial intelligence, first described by Gerald Sussman, that illustrates a weakness of noninterleaved planning algorithms, which were prominent in the early 1970s.

  6. Chvorinov's rule - Wikipedia

    en.wikipedia.org/wiki/Chvorinov's_rule

    The S.I. unit for the mold constant B is seconds per metre squared (s/m 2). [4] According to Askeland, the constant n is usually 2, however Degarmo claims it is between 1.5 and 2.

  7. Huff model - Wikipedia

    en.wikipedia.org/wiki/Huff_model

    In spatial analysis, the Huff model is a widely used tool for predicting the probability of a consumer visiting a site, as a function of the distance of the site, its attractiveness, and the relative attractiveness of alternatives.

  8. Clay Mathematics Institute - Wikipedia

    en.wikipedia.org/wiki/Clay_Mathematics_Institute

    The Clay Mathematics Institute (CMI) is a private, non-profit foundation dedicated to increasing and disseminating mathematical knowledge. Formerly based in Peterborough, New Hampshire, [1] the corporate address is now in Denver, Colorado.

  9. AC-to-AC converter - Wikipedia

    en.wikipedia.org/wiki/AC-to-AC_converter

    A cycloconverter constructs an output, variable-frequency, approximately sinusoid waveform by switching segments of the input waveform to the output; there is no intermediate DC link.