There are many manual control tasks in which the operator base moves in response to joystick movement. Base motion feedback can interfere with the joystick and operator dynamics, resulting in instability and reduced performance. This paper proposes a novel approach to the cancellation of such “biodynamic feedthrough”. A model-based approach is used to formulate a μ-synthesis robust performance ...

Abstract This work aims the assessment of dynamic structural response reinforced concrete floors subjected to rhythmic human activities, based on use biodynamic models, in order consider people-structure interaction effect. Initially, an experimental modal analysis investigated floor , with dimensions 16m x 35m, was performed, identify and assess global behaviour structure. In sequence, a finit...

The aim of this paper was to present results from two long term field experiments comparing potato samples from conventional farming systems with samples from biodynamic farming systems. The principal component analyses (PCA), consistently exhibited differences between potato samples from the two farming systems. According to the PCA, potato samples treated with inorganic fertilizers exhibited ...

Manure products fermented underground in cow horns and commonly used as field spray (preparation 500) in the biodynamic farming system, were characterized for molecular composition by solid-state nuclear magnetic resonance [(13) C cross-polarization magic-angle-spinning NMR ((13) C-CPMAS-NMR)] spectroscopy and offline tetramethylammonium hydroxide thermochemolysis gas chromatography-mass spectr...

The usual specification of acceleration (in number of g’s) as the injury criterion in the biodynamic response of the human body to vibration and/or shock is quite misleading if not invalid. An injury criterion based on stress (or strain) is proposed and shown to have the potential of deciding where, w/ten and how injury is sustained. An example in pilot ejection is used for illustration.