Abstract: In recent years, space–time coding metasurfaces and antennas have attracted widespread attention in both radar and sensing technologies due to their low manufacturing costs, simple ...

Abstract: In this letter, a novel covert communication strategy that utilizes a time modulated retrodirective array (TMRDA) is proposed to enhance communication covertness. Typically, beamforming (BF) ...

Lately, my workouts have felt like a tedious chore. The spark is gone. I used to get "in the zone" and experience blissful flow every time I did cardio, but no longer do. These days, what I call ...

The same prompts in GPT-5 yield success, crashes, or errors. OpenAI's prompt optimizer helps, but introduces its own quirks. AI "unconsciously" adding details raises trust concerns. Do AI's get ...