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The paper deals with the homogenization of random heterogeneous media with arbitrarily shaped inclusions simulated with the extended finite element method (XFEM) coupled with Monte Carlo simulation (MCS). The implementation of XFEM is particularly suitable for this type of problems since there is no need to generate a new finite element mesh at each MCS. The inclusions are randomly distributed and...
A wearable computing navigation aid for the visually impaired was designed, tested and evaluated in a series of pilot experiments. The system comprises an ultrasonic transceiver, a digital compass with a built-in accelerometer, sound playback electronics, a vibration motor and a microcontroller, all integrated inside a glove. The system prototype is power autonomous for about an hour and interfaces...
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