Concept

Equations of motion

Related publications (291)

Measurement of Multi-segment Foot Joint Angles During Gait Using a Wearable System

Kamiar Aminian, Julien Favre, Xavier Crevoisier, Hossein Rouhani

Usually the measurement of multi-segment foot and ankle complex kinematics is done with stationary motion capture devices which are limited to use in a gait laboratory. This study aimed to propose and validate a wearable system to measure the foot and ankl ...

2012

Lie group and Lie algebra variational integrators for flexible beam and plate in R3

Yves Weinand, Tudor Ratiu

The purpose of this research project is to develop variational integrators synchronous or asynchronous, which can be used as tools to study complex structures composed of plates and beams subjected to large deformations and stress. We consider the geometri ...

2012

Lie Group and Lie Algebra Variational Integrators for Flexible Beam and Plate in R3

François Marie Alain Demoures

The purpose of this thesis is to develop variational integrators synchronous or asynchronous, which can be used as tools to study complex structures composed of plates and beams subjected to large deformations and stress. We consider the geometrically exac ...

EPFL2012

Triangular formation control using range measurements: an application to marine robotic vehicles

Jorge Miguel Dias Almeida Rodrigues Soares, António Pedro Rodrigues de Aguiar

This paper addresses the problem of maintaining an autonomous robotic vehicle in a moving triangular formation by regulating its position with respect to two leader vehicles. The robotic vehicle has no a priori knowledge of the path described by the leader ...

2012

Numerical simulations with a first-order BSSN formulation of Einstein's field equations

Jan Sickmann Hesthaven

We present a new fully first-order strongly hyperbolic representation of the Baumgarte-Shapiro-Shibata-Nakamura formulation of Einstein's equations with optional constraint damping terms. We describe the characteristic fields of the system, discuss its hyp ...

AMER PHYSICAL SOC2012

A bio-chemo-hydro-mechanical model for microbially induced calcite precipitation in soils

Lyesse Laloui

Microbial Induced Calcite Precipitation (MICP) is an innovative technique for soil grouting involving a bacterial reactive grout. A comprehensive research work is carried out to better understand and consequently describe the phenomenon of multispecies rea ...

Elsevier Sci Ltd2012

Modeling of Unsteady Friction and Viscoelastic Damping in Piping Systems

François Avellan, Christophe Nicolet, Christian Landry, Andres Müller

In real systems, the phenomena, such as pipe-wall viscoelasticity, unsteady friction or fluid structure interaction induce additional damping and dispersion of transient pressure waves than that defined by classical waterhammer. In this paper, unsteady fri ...

International Association For Hydraulic Research2012

A Comparison Between Joint Coordinate System and Attitude Vector for Multi-segment foot Kinematics

Kamiar Aminian, Julien Favre, Xavier Crevoisier, Hossein Rouhani

The joint angles of multi-segment foot models have been primarily described using two mathematical methods: the joint coordinate system and the attitude vector. This study aimed to determine whether the angles obtained through these two descriptors are com ...

Elsevier2012

Modelling and mathematical results arising from ferromagnetic problems

Jacques Rappaz, Jean Descloux

In this article, we investigate the equations of magnetostatics for a configuration where a ferromagnetic material occupies a bounded domain and is surrounded by vacuum. Furthermore, the ferromagnetic law takes the form ...

SP Science China Press, Springer2012

On pointwise decay of linear waves on a Schwarzschild black hole background

Roland Donninger

We prove sharp pointwise

t^{-3}

decay for scalar linear perturbations of a Schwarzschild black hole without symmetry assumptions on the data. We also consider electromagnetic and gravitational perturbations for which we obtain decay rates

t^{-4}

, and $ ...

Springer Verlag2012

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On pointwise decay of linear waves on a Schwarzschild black hole background

Roland Donninger

We prove sharp pointwise

t^{-3}

t^{-4}

, and $ ...

Springer Verlag2012