A portable practice set in a case used for teaching telegraph and wireless operators Morse code. Spring-operated motor with winding crank on right side. A punched-paper tape is pulled around a spindle ...

Abstract: Smart meter is responsible for producing a large volume of energy consumption data and therefore data compression can be an useful tool for compressing such data sets. As smart meter is ...

Abstract: This paper analyzes the measured broadband signal echoes modulated by digital coding metasurfaces (DCMs) and concludes that the non-ideal broadband modulation results are related to the ...