Google has overhauled Firestore’s query engine, introducing "Pipeline operations" that enable complex server-side aggregations and array unnesting. The update shifts Firestore Enterprise toward an ...

Abstract: In THz imaging systems, signal sources are needed to provide illumination of objects. In several reported imaging systems working at 0.3THz, 0.62THz, and 0.81 THz, an output power around 1 ...