In this paper, we formulate and solve two different minimum time problems related to unmanned ground vehicle (UGV) surveillance. The first problem is the following. Given a set of surveillance UGVs ...

For the sensorless drive system of the variable-leakage-flux permanent-magnet synchronous motor (VLF-PMSM), its obvious parameter variation and additional harmonic interference greatly cause the ...

A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from ...

A NASA-funded telescope in Chile identified a comet from interstellar space on July 1, marking a significant astronomical ...