Absorbed power of small children

Objective. To experimentally measure the seated vertical direction whole-body absorbed power characteristics of small children less than 18 kg in mass. Background. Several studies have reported whole-body absorbed power for adult humans, but no data has been published previously for small children. Methods. Eight children were tested in a laboratory test rig which incorporated safety features which satisfy existing international standards for human testing. Force and acceleration were measured at the point of input to a rigid seat at a sampling rate of 200 Hz, and analysis was performed over the interval from 1.0 to 45.0 Hz. A double normalised (both input acceleration and test subject mass) measure of absorbed power was used. Results. The vertical whole-body power absorption characteristics of the small children were found to present differences with respect to those of adults. The mean frequency of peak absorption was found to be 7.4 Hz as opposed to approximately 4.0–5.0 for adults. The interval of absorption was found to be from approximately 3 to 16 Hz and the total double normalised absorbed power was found to be 86% that of adults. Conclusions. The differences in dynamic response between small children and adults raise questions regarding the applicability of whole-body vibration guidelines such as ISO-2631 in the case of small children since these guidelines were developed from mechanical and subjective response data of adults

Alien Registration- Thibodeau, Eva (Buxton, York County)

https://digitalmaine.com/alien_docs/4217/thumbnail.jp

Alien Registration- Thibodeau, Eva (Buxton, York County)

https://digitalmaine.com/alien_docs/4217/thumbnail.jp

Multi resolution traffic simulation for large scale high fidelity evaluation of vanet applications

This paper presents an approach for coupling traffic simulators of different resolutions in order to conduct virtual evaluations of advanced driver assistance systems based on vehicular ad hoc networks that are both large scale and a high fidelity. The emphasis is put on the need for such an attempt to satisfy the constraint of performing simulations in real time. Both the methods to accomplish this as well as the resulting performance are described. Document type: Part of book or chapter of boo

Convergence of the Optimal Feedback Policies in a. . .

Introduction to Partial Differential Equations, Princeton University Press, New Jersey, 1976. [18] H. J. Kushner, Probability Methods for Approximations in Stochastic Control and for Elliptic Equations, Academic Press, New York, 1977. [19] H. J. Kushner and P. Dupuis, Numerical Methods for Stochastic Control Problems in Continuous Time, Springer-Verlag, New York, 1992. [20] J. A. Sethian, Level Set Methods: Evolving interfaces in geometry, fluid mechanics, computer vision, and materials science, Cambridge University Press, Cambridge, 1996. Reference