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The Hopkins statistic (introduced by Brian Hopkins and John Gordon Skellam) is a way of measuring the cluster tendency of a data set. [1] It belongs to the family of sparse sampling tests. It acts as a statistical hypothesis test where the null hypothesis is that the data is generated by a Poisson point process and are thus uniformly randomly ...
Sheet music published in California between 1852 and 1900, along with related materials such as a San Francisco publisher's catalog of 1872, programs, songsheets, advertisements, and photographs. Images of every printed page of sheet music from eleven locations have been scanned at 400 dpi, in color where indicated. University of California ...
The Hopkinson pressure bar was first suggested by Bertram Hopkinson in 1914 [1] as a way to measure stress pulse propagation in a metal bar. Later, in 1949 Herbert Kolsky [2] refined Hopkinson's technique by using two Hopkinson bars in series, now known as the split-Hopkinson bar, to measure stress and strain, incorporating advancements in the cathode ray oscilloscope in conjunction with ...
Samuel John "Lightnin'" Hopkins (March 15, 1912 – January 30, 1982) [1] was an American country blues singer, songwriter, guitarist and occasional pianist from Centerville, Texas. In 2010, Rolling Stone magazine ranked him No. 71 on its list of the 100 greatest guitarists of all time.
The Detasheet trademark is now owned by the Ensign-Bickford Aerospace and Defense Company, which has been selling an identical explosive sheet product called Primasheet [1] since 1984. Primasheet-1000 and Detasheet are identical and when purchased the packaging contains both trademarks.
Stryker's reagent ([(PPh 3)CuH] 6), [1] also known as the Osborn complex, is a hexameric copper hydride ligated with triphenylphosphine.It is a brick red, air-sensitive solid.
Johns Hopkins University [a] (often abbreviated as Johns Hopkins, Hopkins, or JHU) is a private research university in Baltimore, Maryland, United States. Founded in 1876, Johns Hopkins was the first American university based on the European research institution model. [ 8 ]
William Hopkins FRS (2 February 1793 – 13 October 1866) was an English mathematician and geologist. He is famous as a private tutor of aspiring undergraduate Cambridge mathematicians, earning him the sobriquet the " senior-wrangler maker."