Abstract：
:Despite our understanding of the importance of falling, previous studies have ignored the effects of falls from standing height. In this article, lumped parameter linear and nonlinear models of a standing human have been used to simulate the impact response of the body segments due to inputs at the shoes. The acceleration transfer and frequency response were determined. The effect of nonlinear damping was simulated. Nonlinear effects were found to be most significant when the input amplitude increases. Frequency response attenuation was significant, resulting in almost a shift in the magnitude plots in the range (0.1-100 Hz) of frequency. When the input amplitude was reduced, the nonlinear effects became apparent only in the medium frequency range. In the case simulating a human subject exposed to impulse at the foot, a large amount of energy is dissipated in the joints due to the friction resulting in a joint disorder. This is most significant at the medium frequency range that is expected to be induced by a running human subject.
journal_name
Med Eng Physjournal_title
Medical engineering & physicsauthors
Jarrah M,Qassem W,Othman M,Gdeisat Mdoi
10.1016/s1350-4533(96)00081-1subject
Has Abstractpub_date
1997-06-01 00:00:00pages
308-16issue
4eissn
1350-4533issn
1873-4030pii
S1350453396000811journal_volume
19pub_type
杂志文章abstract：:In case of large segmental defects in load-bearing bones, an external fixator is used to provide mechanical stability to the defect site. The overall stiffness of the bone-fixator system is determined not only by the fixator design but also by the way the fixator is mounted to the bone. This stiffness is an important ...
journal_title：Medical engineering & physics
pub_type： 杂志文章
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abstract：:Segmentation of medical images is very important for clinical research and diagnosis, leading to a requirement for robust automatic methods. This paper reports on the combined use of a neural network (a multilayer perceptron, MLP) and active contour model ('snake') to segment structures in magnetic resonance (MR) imag...
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journal_title：Medical engineering & physics
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journal_title：Medical engineering & physics
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更新日期：2003-06-01 00:00:00
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更新日期：2009-12-01 00:00:00
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journal_title：Medical engineering & physics
pub_type： 杂志文章
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更新日期：2014-06-01 00:00:00
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更新日期：2017-02-01 00:00:00
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journal_title：Medical engineering & physics
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journal_title：Medical engineering & physics
pub_type： 杂志文章
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更新日期：1998-03-01 00:00:00
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journal_title：Medical engineering & physics
pub_type： 杂志文章
doi：10.1016/j.medengphy.2008.01.003
更新日期：2008-10-01 00:00:00
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journal_title：Medical engineering & physics
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journal_title：Medical engineering & physics
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更新日期：2010-03-01 00:00:00
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journal_title：Medical engineering & physics
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