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  2. Coupon (PWB) - Wikipedia

    en.wikipedia.org/wiki/Coupon_(PWB)

    Coupon (PWB) A coupon or test coupon is a printed circuit board (PCB) used to test the quality of a printed wiring board (PWB) fabrication process. Test coupons are fabricated on the same panel as the PWBs, typically at the edges. Coupons are then inspected to ensure proper layer alignment, electrical connectivity, and cross sectioned to ...

  3. Reykon - Wikipedia

    en.wikipedia.org/wiki/Reykon

    1. Andrés Felipe Robledo Londoño (born 12 December 1986), [1] better known as Reykon " El Líder " " Pel mazo " , is a reggaeton performer from Colombia. [2] He is considered one of the biggest proponents of Latin America's reggaeton music genre. [3] He is from Envigado, Antioquia. [4]

  4. Nat Mayer Shapiro - Wikipedia

    en.wikipedia.org/wiki/Nat_Mayer_Shapiro

    Nat Mayer Shapiro was born in New York City, and spent his childhood and adolescence in Brooklyn, NY. At ten, he decided he would become a full-time fine arts painter and started attending the after-school programs at the Pratt Institute in New York. He was inducted in the army in 1941, and traveled with the Medical Corp to Australia and New ...

  5. Shapiro polynomials - Wikipedia

    en.wikipedia.org/wiki/Shapiro_polynomials

    Shapiro polynomials. In mathematics, the Shapiro polynomials are a sequence of polynomials which were first studied by Harold S. Shapiro in 1951 when considering the magnitude of specific trigonometric sums. [1] In signal processing, the Shapiro polynomials have good autocorrelation properties and their values on the unit circle are small. [2]

  6. Shapiro–Francia test - Wikipedia

    en.wikipedia.org/wiki/Shapiro–Francia_test

    The Shapiro–Francia test is a statistical test for the normality of a population, based on sample data. It was introduced by S. S. Shapiro and R. S. Francia in 1972 as a simplification of the Shapiro–Wilk test .

  7. Product sample - Wikipedia

    en.wikipedia.org/wiki/Product_sample

    A free sample or "freebie" is a portion of food or other product (for example beauty products) given to consumers in shopping malls, supermarkets, retail stores, or through other channels (such as via the Internet). [1] Sometimes samples of non-perishable items are included in direct marketing mailings. The purpose of a free sample is to ...