Mohamed Boutaayamou

Dr. Mohamed Boutaayamou


Research Focus & Metrics

Academic Career Length

20Years (2007-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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21 January 2015 in Medical Engineering & Physics
Verified
Journal Article
Closed access
MBMohamed Boutaayamou
Mohamed Boutaayamou
CSCédric Schwartz
Cédric Schwartz
JSJulien Stamatakis
Julien Stamatakis
Vincent DenoëlVincent Denoël
Vincent Denoël
DMDidier Maquet
Didier Maquet
OBOlivier Brüls
Olivier Brüls
An original signal processing algorithm is presented to automatically extract, on a stride-by-stride basis, four consecutive fundamental events of walking, heel strike (HS), toe strike (TS), heel-off (HO), and toe-off (TO), from wireless accelerometers applied to the right and left foot. First, the signals recorded from heel and toe three-axis accelerometers are segmented providing heel and toe flat phases. Then, the four gait events are defined from these flat phases. The accelerometer-based event identification was validated in seven healthy volunteers and a total of 247 trials against reference data provided by a force plate, a kinematic 3D analysis system, and video camera. HS, TS, HO, and TO were detected with a temporal accuracy ± precision of 1.3 ms ± 7.2 ms, -4.2 ms ± 10.9 ms, -3.7 ms ± 14.5 ms, and -1.8 ms ± 11.8 ms, respectively, with the associated 95% confidence intervals ranging from -6.3 ms to 2.2 ms. It is concluded that the developed accelerometer-based method can accurately and precisely detect HS, TS, HO, and TO, and could thus be used for the ambulatory monitoring of gait features computed from these events when measured concurrently in both feet.

4 March 2017
Verified
Book Chapter
Closed access
PDF file
MBMohamed Boutaayamou
Mohamed Boutaayamou
Vincent DenoëlVincent Denoël
Vincent Denoël
OBOlivier Brüls
Olivier Brüls
MDMarie Demonceau
Marie Demonceau
DMDidier Maquet
Didier Maquet
GGGaëtan Garraux
Gaëtan Garraux

1 January 2018
Verified
Conference Paper
Closed access
MBMohamed Boutaayamou
Mohamed Boutaayamou
SGSophie Gillain
Sophie Gillain
CSCédric Schwartz
Cédric Schwartz
VDVincent Denoël
Vincent Denoël
JPJean Petermans
Jean Petermans
GGGaëtan Garraux
Gaëtan Garraux

19 February 2008 in Sensors
Verified
Journal Article
Open access
PDF file
MBMohamed Boutaayamou
Mohamed Boutaayamou
RSRuth V. Sabariego
Ruth V. Sabariego
PDPatrick Dular
Patrick Dular
In this paper, a finite element (FE) procedure for modeling electrostatically actu-ated MEMS is presented. It concerns a perturbation method for computing electrostatic fielddistortions due to moving conductors. The computation is split in two steps. First, an un-perturbed problem (in the absence of certain conductors) is solved with the conventional FEmethod in the complete domain. Second, a perturbation problem is solved in a reduced re-gion with an additional conductor using the solution of the unperturbed problem as a source.When the perturbing region is close to the original source field, an iterative computation maybe required. The developed procedure offers the advantage of solving sub-problems in re-duced domains and consequently of benefiting from different problem-adapted meshes. Thisapproach allows for computational efficiency by decreasing the size of the problem.

1 January 2007
Verified
Conference Paper
Open access
MBMohamed Boutaayamou
Mohamed Boutaayamou
RSRuth V. Sabariego
Ruth V. Sabariego
PDPatrick Dular
Patrick Dular
In this paper, a finite element (FE) procedure for modeling electrostatically actuated MEMS is presented. It concerns a perturbation method for computing electrostatic field distortions due to moving conductors. The computation is split in two steps. First, an unperturbed problem (in the absence of certain conductors) is solved with the conventional FE method in the complete domain. Second, a perturbation problem is solved in a reduced region with an additional conductor using the solution of the unperturbed problem as a source. When the perturbing regions are close to the original source field, an iterative computation may be required. The developed procedure offers the advantage of solving sub-problems in reduced domains and consequently of benefiting from different problem-adapted meshes. This approach allows for computational efficiency by decreasing the size of the problem.