in this paper, a three dimensional mathematical model for htlv-1infection with intracellular delay and immune activation delay is investigated.by applying the frequency domain approach, we show that time delays candestabilize the ham/tsp equilibrium, leading to hopf bifurcations and sta-ble or unstable periodic oscillations. at the end, numerical simulations areillustrated.

We construct a new adaptive basis that provide precise fre quency localization and good spatial localization We de velop a compression algorithm that exploits this basis to obtain the most economical representation of the image in terms of textured patterns with di erent orientations fre quencies sizes and positions The technique directly works in the Fourier domain and has potential applicatio...

A three dimensional pendulum modeled after the Laser Interferome ter Gravitational wave Observatory s suspended optics was constructed to investigate the pendulum s dynamics due to suspension point motion In particular we were interested in studying the pendular pitch energy coupling Determination of the pendular s Q value was made from fre quency domain analysis of the experimental data Howeve...

We construct a new adaptive basis that provide precise fre quency localization and good spatial localization We de velop a compression algorithm that exploits this basis to obtain the most economical representation of an image in terms of textured patterns with di erent orientations fre quencies sizes and positions The technique directly works in the Fourier domain and has potential application...

As part of the present wave of interest in electromagnetic propagation in complex materials (left-handed, chiral, nonreciprocal, nonlinear, etc.), a special mention may be made to bi-iso‐ tropic materials. After a period of relevance during the nineties [1-4], nowadays they enjoy a renewed interest, because of new fabrication techniques that allow the use of mature tech‐ nologies (printed or in...

Exploiting the physics of nanoelectronic devices is a major lead for implementing compact, fast, and energy efficient artificial intelligence. In this work, we propose an original road in direction, where assemblies spintronic resonators used as synapses can classify an-alogue radio-frequency signals directly without digitalization. The convert ra-dio-frequency input into direct voltages throug...

Tuberous scle ro sis is a rare gene tic disea se with auto so mal domi nant inhe ri tan ce, asso cia ted with mul ti ple hamar to mas in seve ral organs, such as the brain, skin, lung, kid ney, heart and eyes. The authors of this study report a case of a 30 years old fema le patient with tube rous scle ro sis, pre sen ting mul ti ple angio fi bro mas on face trea ted with high fre quency equip ...

This paper proposes a method for interfacing a force feedback device of type PHANToM to a spring damper model of the human thigh The model was de ned from experimental data and it is simulated us ing implicit integration The main di culty in this is that while the PHANToM needs to receive the force values at a rate of KHz the physical model runs at a maximum speed of Hz Supplying forces at this...