Overall, the length scales associated with stratification were found to be much larger than that of the reaction zone and flame, resulting in a quasi-homogeneous propagation, predominantly in a back supported stratified combustion regime.
From the start of his tenure, audiences had to adjust to seeing him conduct while seated in a conductor's chair with a back support.
Wearing a back support to prevent strain, he said he had been "throwing snow as high as I can get it".
At the expo, Giant introduced the Revive, a bicycle that features an adjustable wheelbase and a back support, and is a kindred spirit to the increasingly popular recumbent bicycles that the industry has been making in growing numbers in recent years.
The responses of the body seated without a back support, also revealed notable influences of excitation magnitude, particularly on the primary peak frequencies.
The international standard, ISO-5982 (2001), defines such ranges for very limited conditions, namely for body seated without a back support and exposed to vertical vibration.
The study was conducted on 31 male and 27 female subjects, exposed to three levels of vertical vibration (0.25, 0.50 and 0.75 m/s2 rms acceleration) in the 0.50 to 20 frequency range, while seated without a back support and against a vertical back support.
The biodynamic response of human body seated without a back support and exposed to vertical whole-body vibration have been standardized in ISO 5982 and DIN 45676 in terms of driving-point mechanical impedance and apparent mass.
This paper addresses the functionality of Artificial Neural Network (ANN) for prediction of seated body apparent mass under different levels of vibration excitations in the 0.5 20 Hz frequency range, while assuming two different sitting postures (with and without a back support).
These include the driving-point biodynamic responses of the body seated with and without a back support while exposed to fore-aft, lateral and vertical vibration and those of the standing body to vertical vibration, and seat-to-head vibration transmissibility of the seated body.
