Angesichts des wachsenden Populismus und Rechtsradikalismus ist der Kampf gegen Geschichtsvergessenheit im Denken Handeln wieder höchst aktuell. Auf den ersten Blick scheint - zumindest in Bezug auf die Vormoderne aber kaum vorzuliegen: Mittelalter, Renaissance Frühe Neuzeit erfahren Romanen, Dramen populären Medien einen Boom. Doch auch gerade hier ein aktives An-Denken Simplifizierungen, Myth...

We introduce a technique for ultrawideband measurement of terahertz pulses called dithered-edge sampling ~DES!. The technique makes use of a photoconductive receiver, but the detection bandwidth is much wider than that of the receiver alone. The key to increasing the bandwidth is the addition of an ultrafast optically triggered attenuator that chops the terahertz pulse before its detection. The...

Recent studies have demonstrated that training adult amblyopes in simple visual tasks leads to significant improvements of their spatial vision. One critical question is: How much can training with one particular stimulus and task generalize to other stimuli and tasks? In this study, we estimated the bandwidth of perceptual learning in teenage and adult observers with anisometropic amblyopia an...

A number of satellite communication systems have been proposed using geosynchronous (GEO) satellites, as well as low earth orbit (LEO) constellations operating in the Ka-band and above. At these frequencies satellite networks are able to provide broadband services requiring wider bandwidth than the current services at C or Ku-band. As a consequence, some of the new services gaining momentum inc...

Previous studies have suggested that targets illuminated by monochromatic (narrow-band) light are less effective in stimulating the eye to change its focus than are black-white (broadband) targets. The present study investigates the influence of target spectral bandwidth on the dynamic accommodation response in eight subjects. The fixation target was a 3.5-cycle/deg square-wave grating illumina...

Due to the needs of many demanding users in wireless networks, the transmission distance and bandwidth of IEEE 802.11 has become inadequate to satisfy their requirements. Therefore, the next generation of wireless network IEEE 802.16 standard has been developed. The latter has a higher bandwidth to cover a wider area of communication with lower costs in deployment and maintenance, and it also s...

in this paper we introduce a simple, computationally inxepentsive, adaptive recursive structure for enhancing bandpass signals highly corrupted by broad-band noise. this adaptive algorithm, enhancing input signals, enables us to estimate the center frequency and the bandwidth of the input signal. in addition, an important feature of the proposed structure is that the conventional bias existing ...