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SUMMARY A method is proposed for accurately describing arbitrary-shaped free boundaries in finite-difference schemes for elastodynamics, in a time-domain velocity-stress framework. The basic idea is as follows: fictitious values of the solution are built in vacuum, and injected into the numerical integration scheme near boundaries. The most original feature(More)
We describe the design and implementation of Single Sign-On authentication solution that uses a Near Field Communication enabled mobile phone. Such a solution relieves the users from remembering multiple username and passwords when authenticating themselves to various services on the internet. Mobile phones are today's ubiquitous computing devices, used for(More)
  • C Gélis
  • 1991
For a long time hearing aids were the only solution for the deaf to perceive speech and sounds. Today, among the new deaf-aids, acoustic amplification still offers the easiest and most versatile means of combatting the majority of such handicaps. However, due to the fundamental inadequacy of amplification in compensating frequency selectivity, audiologist(More)
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