Forty years after breaking away from Antarctica, the frozen colossus known as A23a died as it lived: drifting around the bottom of the globe, fascinating ardent observers, and offering scientists ...

Abstract: Metamaterial absorbers (MMAs) are designed to achieve near-total absorption of electromagnetic radiation. In radio-frequency fields, MMAs exhibit absorption behavior that stems from RF ...

Abstract: This paper presents GRTPHM (Generalized Rectangular Transform and Penta-Hyperchaotic Map), a novel multi-image encryption scheme that enhances security, efficiency, and versatility. The ...

Kensington, Philadelphia, has been called many things over the years. The Walmart of Heroin. The Las Vegas of Drugs. “How do you know the toothbrush was invented in Kensington?” one longtime ...