شِعْرُ طَاهِر العتَّابِی البَغْدَادِی ت (609) هـ. : جَمْعٌ وَتَحْقِیْقٌ وَدِرَاسَة

Npgrj_nn_2108 609..616

Studies of cortical connections or neuronal function in different cerebral areas support the hypothesis that parallel cortical processing streams, similar to those identified in visual cortex, may exist in the auditory system. However, this model has not yet been behaviorally tested. We used reversible cooling deactivation to investigate whether the individual regions in cat nonprimary auditory...

B918215b 602..609

Taking inspiration from eukaryotic cilia, we report a method for growing dense arrays of magnetically actuated microscopic filaments. Fabricated from the bottom-up assembly of polymer-coated cobalt nanoparticles, each segmented filament measures approximately 5–15 mm in length and 23.5 nm in diameter, which was commensurate with the width of a single nanoparticle. A custom microscope stage actu...

Npgrj_ng_122 609..615

Daniel F Gudbjartsson1, G Bragi Walters1, Gudmar Thorleifsson1, Hreinn Stefansson1, Bjarni V Halldorsson1,2, Pasha Zusmanovich1, Patrick Sulem1, Steinunn Thorlacius1, Arnaldur Gylfason1, Stacy Steinberg1, Anna Helgadottir1, Andres Ingason1, Valgerdur Steinthorsdottir1, Elinborg J Olafsdottir3, Gudridur H Olafsdottir3, Thorvaldur Jonsson4, Knut Borch-Johnsen5,6, Torben Hansen5, Gitte Andersen5, ...

تعهدات اخلاقی نویسندگان مقالا ت

A Beamformer ASIC using Cordic Arithmetic 609

| An IC implementation for a demonstrator of adaptive beamforming in radio astronomy is presented here. The chip implements the MVDR (Minimum Variance Distortion-less Response) beamforming algorithm using Cordic arithmetic. It is designed in Mentor Graphics's DSP design environment (DSP station). In the beam-forming demonstrator, signals from 16 antennas are digitized at a sampling frequency of...