Herbert Hoover Foundation Invitation to 100 Year Celebration of Hoover\u27s Birth

Herbert Hoover Foundation Invitation to 100 Year Celebration of Hoover\u27s Birth.https://digitalcommons.georgefox.edu/archives_hoover/1043/thumbnail.jp

Pennington to Hoover, November 14, 1947

Pennington writing to former US President Herbert Hoover expressing joy for recent articles casting a favorable light on Hoover and concern over his contraction of Shingles disease.https://digitalcommons.georgefox.edu/levi_pennington/1208/thumbnail.jp

Levi Pennington Writing to Lura Miles, October 11, 1946

Levi Pennington writing to Lura Miles about his correspondence with Charles Wells, challenging him on a negative statement his newspaper made about Herbert Hoover, and about the smear campaign he believed was aimed at Hoover. Also talks about personal life.https://digitalcommons.georgefox.edu/levi_pennington/1105/thumbnail.jp

Levi Pennington Writing to Lura Miles, February 14, 1947

Levi Pennington writing to Lura Miles about his work on relief, the college\u27s purchase of the house Herbert Hoover lived in with his uncle (the Hoover-Minthorn House) with the intention of turning it into a museum, and other news.https://digitalcommons.georgefox.edu/levi_pennington/1135/thumbnail.jp

Harmonic oscillators in the Nos\'e - Hoover thermostat

We study the dynamics of an ensemble of non-interacting harmonic oscillators in a nonlinear dissipative environment described by the Nos\'e - Hoover model. Using numerical simulation we find the histogram for total energy, which agrees with the analysis of the Nos\'e - Hoover equations effected with the method of averaging. The histogram does not correspond to Gibbs' canonical distribution. We have found oscillations at frequency proportional to $\sqrt{\alpha/m}$, $\alpha$ the dissipative parameter of thermostat and $m$ the characteristic mass of particle, about the stationary state corresponding to equilibrium. The oscillations could have an important bearing upon the analysis of simulating molecular dynamics in the Nos\'e - Hoover thermostat.Comment: 7 pages, 4 figure