Hollow-core photonic band gap fibers for particle acceleration

Photonic band gap (PBG) dielectric fibers with hollow cores are being studied both theoretically and experimentally for use as laser driven accelerator structures.The hollow core functions as both a longitudinal waveguide for the transverse-magnetic (TM) accelerating fields and a Shoes channel for the charged particles.The dielectric surrounding th

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Time Orientation Technologies in Special Education

A device to train children BCAA in time orientation has been designed, developed and evaluated.It is framed within a long-term cooperation action between university and special education school.It uses a specific cognitive accessible time display: Time left in the day is represented by a row of luminous elements initially on.Time passing is represe

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