Results 71 to 80 of about 993,230 (345)

Anti-multipath digital signal detector [PDF]

open access: yes, 1974
Detector operates in conjunction with radio frequency portion of receiver to detect digital signals transmitted in known modulation formats. Signal is constructed by assigning known and distinct modulation waveforms to sequence of message symbols.
Painter, J. H.
core   +1 more source

Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding

open access: yesAdvanced Engineering Materials, EarlyView.
This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou   +6 more
wiley   +1 more source

Baseband Transceiver Design of a High Definition Radio FM System Using Joint Theoretical Analysis and FPGA Implementation

open access: yesInternational Journal of Antennas and Propagation, 2014
Advances in wireless communications have enabled various technologies for wireless digital communication. In the field of digital radio broadcasting, several specifications have been proposed, such as Eureka-147 and digital radio mondiale (DRM).
Chien-Sheng Chen   +3 more
doaj   +1 more source

Blazars in the early Universe [PDF]

open access: yes, 2011
We investigate the relative occurrence of radio--loud and radio-quiet quasars in the first billion years of the Universe, powered by black holes heavier than one billion solar masses. We consider the sample of high-redshfit blazars detected in the hard X-
Abdo   +48 more
core   +1 more source

Engineering Deformation and Failure in Diamond Triply Periodic Minimal Surface Lattices via 3D Wall‐Thickness Grading

open access: yesAdvanced Engineering Materials, EarlyView.
The work demonstrates that strategic wall‐thickness grading in diamond triply periodic minimal surface lattices enables precise tuning of deformation and failure behavior under compression. Different gradation patterns guide how and where the structure collapses, improving energy absorption or promoting controlled brittle failure.
Giovanni Rizza   +3 more
wiley   +1 more source

Dakwah Media Radio Jakarta Islami Center (JIC) di Era Digital

open access: yesPalita: Journal of Social - Religion Research
The development and advancement of today's technological world have helped overcome various obstacles in life.  In the digital era, the fulfilment of information needs is a necessity that cannot be denied.
Moh. Amir Choiri, Pipin Yosepin
doaj   +1 more source

Radio loud AGN and the L_X - \sigma relation of galaxy groups and clusters

open access: yes, 2008
We use the ROSAT All-Sky Survey to study the X-ray properties of a sample of 625 groups and clusters of galaxies selected from the Sloan Digital Sky Survey.
Akritas   +65 more
core   +1 more source

[Un]happy Together: Why the Supremacy Clause Preempts State Law Digital Performance Rights in Radio-Like Streaming of Pre-1972 Sound Recordings [PDF]

open access: yes, 2015
Lovers of the music of Frank Sinatra, Elvis Presley, Etta James, and hundreds of other recording artists whose records were made before February 15, 1972, may soon have a hard time hearing these great artists on any satellite or Internet radio service ...
Ross, Julie L.
core   +3 more sources

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