A 3D-printed piezoelectric metamaterial uses topology-driven charge transport to locate underwater sound sources from a single compact transducer, replacing bulky hydrophone arrays.

An electronic nose modeled on insect antennae simultaneously identifies gas mixtures and pinpoints their three-dimensional ...

Ask a child what an apple is, and you'll get an answer that's sweet, literal, and probably red. Ask a theologian, and you might get sin. Ask a tech analyst, and you might get Cupertino, quarterly ...

Abstract: Golay complementary array sets (GCASs) have excellent practical applications for omnidirectional precoding in massive multi-input and multi-output (MIMO) systems due to their ideal ...

Abstract: A novel higher-dimensional definition for Costas arrays is introduced. This definition works for arbitrary dimensions and avoids some limitations of previous definitions. Some non-existence ...

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Simple, fast and powerful PHP utility functions to flatten/unflatten multidimensional/JSON arrays into a one-dimensional array, preserving key names and joining them with customizable separators.