Multipath interference disrupts wireless signals, causing issues like TV ghosting and fading. Now, researchers have developed a passive metasurface that overcomes traditional filtering limits. Using a ...
With Positive Train Control (PTC) operational, Amtrak is seeking Federal Railroad Administration (FRA) approval to remove automatic wayside signals serving as distant signals to existing interlockings ...
The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...
Amtrak is seeking Federal Railroad Administration (FRA) approval to retire fixed wayside signals as automatic block points on the Mid-Atlantic Division’s Philadelphia-to-Washington, line (a Northeast ...
CAG reports nearly 3,000 signal failure incidents annually in South Western Railway, flagging maintenance lapses and safety concerns.
Substantial cases of signal failures at an average of 2,961 incidents per annum in the South Western Railway zone reflect ...
The evolution of wireless communications and the miniaturization of electrical circuits have fundamentally reshaped our lives and the digital landscape. However, as we push toward higher-frequency ...
This video presents a study in which researchers developed a passive metasurface that uses a time-varying interlocking mechanism with metal-oxide-semiconductor field-effect transistors to selectively ...
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