Herman Otto Hartley

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Herman Otto Hartley , mostly quoted as HO Hartley, (* as Hermann Hirschfeld April 13, 1912 ; † 1980 ) was a German-American mathematician and mathematical statistician. In the United States , it was widely known as HOH .

Life

Hirschfeld received his doctorate in 1934 under Adolf Hammerstein at the Humboldt University of Berlin ( direct methods in the calculus of variations for the solution of boundary value problems ), whereby, according to Erhard Schmidt, he hid his best result in a footnote of the dissertation. After the " seizure of power " by the National Socialists, he fled as a Jew and went to Cambridge in 1934 . From about 1937 or 1938 he took on the name Hartley. In 1940 he received his doctorate again in Cambridge with John Wishart in mathematical statistics. He worked full-time at Harper Adams Agricultural College in Shropshire (now University), where he dealt with experimental design for agriculture. During the Second World War he began to work with calculating machines as an employee of LJ Comrie at Scientific Computing Services in London, who mainly worked for the military. After the war he became a lecturer in statistics at University College London , where he worked with Egon Pearson . In 1953 he was a visiting professor at Iowa State University , where he also helped to set up computer centers ( scientific computing services) and supervised a total of 17 doctoral students in nine years (the visiting professorship was regularly extended). From 1963 he was a professor at Texas A&M University , where he built up the faculty of statistics and supervised over 30 doctoral students. In 1977 he officially retired, but remained active in research and teaching and in 1979 took over a professorship at Duke University , which he held until his death.

In 1950 he published a statistical test named after him for analyzing variances.

He also dealt with optimization, stochastic computer methods and statistical methods of data acquisition, for example for projections (survey sampling). He also dealt with biometrics, for example in establishing safe dosages in experiments with carcinogens. With Egon Pearson he published the Biometrika Tables for Statisticians (2 volumes, 1954, 1972).

Hartley was a fellow and 1979 president of the American Statistical Association and a member of the International Statistical Institute . In 1973 he received the SS Wilks Medal. A prize and a series of lectures at Texas A&M University are named after him.

Fonts

  • Statistics as a science and profession, Journal of the American Statistical Association, Volume 75, 1980, pp. 1-6.

literature

  • Maximilian Pinl : Colleagues in a Dark Time , Annual Report DMV, Volume 71, 1969, pp. 179-180.

Web links

Individual evidence

  1. ^ Mathematics Genealogy Project . Published in series of the Mathematical Seminar and Institute for Applied Mathematics of the University of Berlin, Volume 2, 1934, pp. 65–108.
  2. Quoted from Pinl.
  3. Hartley The Use of Range in Analysis of Variance , Biometrika, Volume 37, 1950, pp. 271-280.