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Publications associées (86)

Measurement of K+K- production in two-photon collisions in the resonant-mass region

Olivier Schneider, Aurelio Bay, Chao Wang, Tagir Aushev, Sun Hee Kim, Yuan Yuan, Ji Hyun Kim, Jing Li

K+K- production in two-photon collisions has been studied using a large data sample of 67 fb-1 accumulated with the Belle detector at the KEKB asymmetric e+e- collider. We have measured the cross section for the process γγ → K +K- for center-of-mass energi ...

2004

Ambulatory gait analysis in Parkinson's Disease: Application of a novel method based on kinematics sensors

Kamiar Aminian, Catherine Dehollain, Arash Salarian

Summary: Using our ambulatory monitoring system, ASUR, 13 Parkinsonian patients were monitored for periods of up to 5 hours while they were free to perform activities at will. Every one hour patients did a UPDRS test as the clinical assessment. During the ...

ESMAC2004

Body movement monitoring device

Kamiar Aminian, Pascal Morel, Bijan Najafi, Jean Gramiger

The invention relates to a device and a method for measuring gait parameters. It is based on autonomous sensing units for estimation of spatio-temporal parameters during walking and uses a wavelet transform to compute the values of gait parameters from the ...

2003

On the electrical conductivity of metal matrix composites containing high volume fractions of non-conducting inclusions

Andreas Mortensen, Ludger Weber

Different predictive models-the Maxwell mean field approach, the differential effective medium scheme, the 2- and 3-phase self-consistent, and 3-point model-for the electrical conductivity of two-phase materials are assessed based on electrical conductivit ...

2003

Ambulatory measurement of gait parameters in Parkinson's disease: Effects of subthalamic stimulation

Kamiar Aminian, Catherine Dehollain, Arash Salarian

Introduction: In this study the effect of subthalamic nucleus neep brain Stimulation (STN-DBS) on the gait parameters of patients with Parkinson's disease (PD) was examined using an ambulatory gait analysis system based on miniature gyroscopes. The aim was ...

2003

Neck Muscle Vibration and Spatial Orientation During Stepping in Place in Humans

Grégoire Courtine

Unilateral long-lasting vibration was applied to the sternomastoid muscle to assess the influence of asymmetric neck proprioceptive input on body orientation during stepping-in-place. Blindfolded subjects performed 3 sequences of 3 trials, each lasting 60 ...

2002

Can accelerometry accurately predict the energy cost of uphill/downhill walking?

Kamiar Aminian, Yves Schutz

To evaluate whether an activity monitor based on body acceleration measurement can accurately assess the energy cost of the human locomotion, 12 subjects walked a combination of three different speeds (preferred speed+/-1 km/h) and seven slopes (-15 to + 1 ...

2001

Storage and mixing of ice slurries in tanks

Didier Albert Simon Vuarnoz

Experimental results on storage and mixing of ten-percent-talin/water ice slurries are presented. For this purpose a system with a storage tank, with a volume of 1000 liters and a mixing device containing three slightly inclined cones, was investigated. In ...

International Institute of Refrigeration IIR-IIF2001

Transmission électromagnétique rotative d'énergie et d'information sans contact

The transmission of energy or signals to a rotating device is generally carried out by systems with sliding contacts. This technology, apparently simple, generates serious nuisance such as abrasion of the elements in contact, electric noises and requires a ...

EPFL2000

Method for determining the position of a rotor of an electromagnetic motor with no commutator and device therefor (Procédé de détermination de la position du rotor d'un moteur électromagnétique sans collecteur et dispositif pour sa mise en oeuvre)

Yves Perriard, Frédéric Bonvin

NOVELTY - After disconnection from normal control (3) a pulse generator (4) sends positive and negative pulses to a motor winding R. The response currents are measured (5) from voltages (Vpr,Vnr) which appear after a fixed time on a neutral resistor (2) an ...

2000

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