Gordon R. Johnson

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This paper presents computed results that investigate the effect a material phase change has on penetration and shock waves. The effect of material strength is also presented for comparison. Three phase change conditions are used to investigate the phase change effect, and three levels of material strength are used to investigate the effect of strength. The(More)
  • G R Johnson
  • 1982
Two-locus theory for recurrent selection for general combining ability in maize was developed. The theory featured: (a) recombination of the selfed progeny of selected parents; and (b) linkage disequilibrium in the initial gametic array. The theory indicated: (a) that initial linkage disequilibrium exerts a permanent influence upon selection progress; (b)(More)
In 2011, Holmquist and Johnson presented a model for glass subjected to large strains, high strain rates and high pressures. It was later shown that this model produced solutions that were severely mesh dependent, converging to a solution that was much too strong. This article presents an improved model for glass that uses a new approach to represent the(More)
  • G R Johnson
  • 1983
Because each population in a reciprocal recurrent selection program can be dually described as a tester for its reciprocal and as a population subject to selection, selection progress can be partitioned into algebraic terms that are (a) unaffected by initial linkage disequilibrium, (b) modified exclusively by initial linkage disequilibrium in the selection(More)
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