Niu makes electric kick scooters, Vespa-like sit-atop scooters, and numerous eBikes, as well as this new XQi500 motorcycle.

Abstract: Carrier phase measurement is one of the most important measurements of GNSS receiver, which can be used for precise positioning. In order to achieve a reliable and high precise position, a ...

Abstract: The increasing demand for data throughput in modern data centers has intensified the need for high-speed, energy-efficient optical interconnects. Although traditional intensity-modulation ...