Are two-dimensional measured frontal plane angles related to three-dimensional measured kinematic profiles during running?

Assessment of two-dimensional induced accelerations from measured kinematic and kinetic data.

A simple algorithm is presented to calculate the induced accelerations of body segments in human walking for the sagittal plane. The method essentially consists of setting up 2x4 force equations, 4 moment equations, 2x3 joint constraint equations and two constraints related to the foot-ground interaction. Data needed for the equations are, next to masses and moments of inertia, the positions of...

Two-dimensional measured laminations of positive Euler characteristic

Lifetime of two-dimensional electrons measured by tunneling spectroscopy.

For electrons tunneling between parallel two-dimensional electron systems , conservation of in-plane momentum produces sharply resonant current-voltage characteristics and provides a uniquely sensitive probe of the underlying electronic spectral functions. We report here the application of this technique to accurate measurements of the temperature dependence of the electron-electron scattering ...

Bond connectivity measured via relaxation-assisted two-dimensional infrared spectroscopy.

The relaxation-assisted two-dimensional infrared (RA 2DIR) method is a novel technique for probing structures of molecules, which relies on vibrational energy transport in molecules. In this article we demonstrate the ability of RA 2DIR to detect the bond connectivity patterns in molecules using two parameters, a characteristic intermode energy transport time (arrival time) and a cross-peak amp...

Three-dimensional human running

This paper describes the control of a simulated three dimensional model of a human runner The rigid body model has seventeen segments and thirty con trolled degrees of freedom The dynamic parameters of the simulation were computed using data measured from humans to produce a model that is biomechan ically realistic within the constraints of a rigid body approximation We developed locomotion con...