Analysis and modelling of muscles motion during whole body vibration

The aim of the study is to characterize the local muscles motion in individuals undergoing whole body mechanical stimulation. In this study we aim also to evaluate how subject positioning modifies vibration dumping, altering local mechanical stimulus. Vibrations were delivered to subjects by the use of a vibrating platform, while stimulation frequency was increased linearly from 15 to 60Hz. Two different subject postures were here analysed. Platform and muscles motion were monitored using tiny MEMS accelerometers; a contra lateral analysis was also presented. Muscle motion analysis revealed typical displacement trajectories: motion components were found not to be purely sinusoidal neither in phase to each other. Results also revealed a mechanical resonant-like behaviour at some muscles, similar to a second-order system response. Resonance frequencies and dumping factors depended on subject and his positioning. Proper mechanical stimulation can maximize muscle spindle solicitation, which may produce a more effective muscle activation

Perception of Vibrotactile Cues in Musical Performance

We suggest that studies on active touch psychophysics are needed to inform the design of haptic musical interfaces and better understand the relevance of haptic cues in musical performance. Following a review of the previous literature on vibrotactile perception in musical performance, two recent experiments are reported. The first experiment investigated how active finger-pressing forces affect vibration perception, finding significant effects of vibration type and force level on perceptual thresholds. Moreover, the measured thresholds were considerably lower than those reported in the literature, possibly due to the concurrent effect of large (unconstrained) finger contact areas, active pressing forces, and long-duration stimuli. The second experiment assessed the validity of these findings in a real musical context by studying the detection of vibrotactile cues at the keyboard of a grand and an upright piano. Sensitivity to key vibrations in fact not only was highest at the lower octaves and gradually decreased toward higher pitches; it was also significant for stimuli having spectral peaks of acceleration similar to those of the first experiment, i.e., below the standard sensitivity thresholds measured for sinusoidal vibrations under passive touch conditions

Abstracts from the 20th International Symposium on Signal Transduction at the Blood-Brain Barriers

https://deepblue.lib.umich.edu/bitstream/2027.42/138963/1/12987_2017_Article_71.pd

Model algorithms

This dataset contains files with algorithms created in MatLabR2021b. Each file contains one of two methods to calculate the response of a synthesized system with and without damping elements. One method is done through the classical matrix calculation and the other method is done with the use of edge graphs and structural numbers derived from them.The second method is developed as a substitute to matrix calculation with hopes of developing a more straightforward method with less computational overload

Model algorithms

This dataset contains files with algorithms created in MatLabR2021b. Each file contains one of two methods to calculate the response of a synthesized system with and without damping elements. One method is done through the classical matrix calculation and the other method is done with the use of edge graphs and structural numbers derived from them.The second method is developed as a substitute to matrix calculation with hopes of developing a more straightforward method with less computational overload.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV

Research data on prototype solar panel power output

Reserach data gathered from two solar panels of the same specification throughout 14.08.2020 and 18.08.2020. One panel was a prototype solar panel with solar tracker, built with an intention of mounting on a sloped household roof. The other panel was mounted without any mobility as a reference

Model algorithms

This dataset contains files with algorithms created in MatLabR2021b. Each file contains one of two methods to calculate the response of a synthesized system with and without damping elements. One method is done through the classical matrix calculation and the other method is done with the use of edge graphs and structural numbers derived from them.The second method is developed as a substitute to matrix calculation with hopes of developing a more straightforward method with less computational overload.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE. TO VIEW A LIST OF FILES AND ACCESS THE FILES IN THIS DATASET CLICK ON THE DOI-LINK ABOV