141,884 research outputs found
Letter from Hill Ferguson to Louis D. Boylan, University, Alabama, August 17, 1951
Four letters are enclosed with this letter to Ferguson. The first letter is from Louis D. Boylan, Public Accountant, Louis D. Boylan and Company, University, Alabama, to President John M. Gallalee, University, Alabama, August 13, 1951. The second letter is also from Louis D. Boylan to Buford Boone, Publisher, The Tuscaloosa News, Tuscaloosa, Alabama, July 25, 1951. The third letter is from William N. Perry, Fraternity Auditor, Louis D. Boylan and Company, University, Alabama, to Dean Noble B. Hendrix, Dean of Students, University, Alabama, August 7, 1951. The fourth letter is also from William N. Perry to Louis D. Boylan, Louis D. Boylan and Company, University, Alabama, August 7, 1951
Lamar N. Ferguson - 1917
Black and white image mounted on cardboard of Lamar N. Ferguson (written on verso of print), not M. K. Ferguson as the label suggests
Ferguson, N, 404716
This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/384843Surname: FERGUSON. Given Name(s) or Initials: N. Military Service Number or Last Known Location: 404716. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 48379.230585
Item: [2016.0049.17136] "Ferguson, N, 404716
Lamer N. Ferguson
Black and white image mounted on cardboard of Lamer N. Ferguson "my other brother
Item 20, Tail Gators for “Rock 'n' Roll Until the Cows Come Home” and “Mumbo Jumbo” on Wrestler Records (offset, autographed by all band members, 16 x 22 inches), undated
The Keith Ferguson collection includes artifacts, manuscripts, and audio-visual materials from the childhood and professional career of the internationally respected musician.Keith Ferguson, noted bass guitarist, was born on July 23, 1946. He was raised in the Sixth Ward of Houston, Texas, and graduated from San Jacinto High School in 1964. Ferguson, who played left-handed, worked with Carlos Santana, Johnny Winter, Peter Kaukonen, Jimmy and Stevie Ray Vaughn. He was a founding member of The Fabulous Thunderbirds and played with groups such as Night Crawlers, Texas Cajun Trio, The Tail Gators, and Big Guitars from Texas.Ferguson was nominated for a Grammy in 1986 for his work with the Big Guitars (a strictly instrumental, Austin-based band). He also won the Austin Music Award for Best Bass Guitar in 1985, and in 1997 he was inducted into the Austin Music Hall of Fame. Keith Ferguson died in Austin on April 29, 1997, of liver failure
Ferguson, N S, 400984
This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/384838Surname: FERGUSON. Given Name(s) or Initials: N S. Military Service Number or Last Known Location: 400984. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 51840.230580
Item: [2016.0049.17131] "Ferguson, N S, 400984
Ferguson, N J, NX51547
This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/384860Surname: FERGUSON. Given Name(s) or Initials: N J. Military Service Number or Last Known Location: NX51547. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 18606.230602
Item: [2016.0049.17153] "Ferguson, N J, NX51547
Letter from Hill Ferguson to R. N. Hawkins, Jr., Kirkpatrick Sand and Cement Company, Birmingham, Alabama, December 8, 1949
The experimental response of a broadband base-excited vibration isolator incorporating cubic damping
Structural damping is often assumed to be viscous and linear which leads to comparatively straightforward vibration analysis. In the case of vibration isolation mounts this assumption of linearity is particularly questionable and one might want to know the effect of a nonlinear damping characteristic on the isolation performance. This paper considers the isolation performance of a single degree of freedom system with cubic damping. Previous work has considered the case of harmonic base excitation in which cubic damping is less favourable than linear damping. This work is summarised briefly here and extended to random base motion. The study is predominantly experimental in which cubic damping is realised using simple velocity feedback control. The rig is first described and characterised in its passive state prior to implementing linear and cubic elocity feedback. It is found that, unlike the case of harmonic base excitation, cubic damping offers very similar performance to linear damping. The reason for this difference in behaviour is identified by considering the probability density functions of the response variables
The effect of cubic damping on a base excited isolator: an experimental study for harmonic excitation
An experimental study has been conducted to validate theoretical solutions for the response of a base excited single degree-of-freedom isolation system possessing pure cubic damping. The cubic damping characteristic was implemented using an electromagnetic shaker with a simple non-linear velocity feedback control. The rig and practical implementation of the active damping are described. The base excitation was harmonic at a set of discrete frequencies with constant displacement amplitude. Consistent with theoretical predictions, the isolation performance at high excitation frequencies is shown to be worse than either the undamped or linear viscously damped isolation system with the displacement transmissibility tending to unity. This is contrary to the case of force excitation reported in the literature where cubic damping offers improved performance. The physical causes of the distinct behaviours and the consequences for isolator design are discusse
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