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 ...

Multiple telescopes have tracked the object’s movements as far back as June 14 and found that the comet arrived from the ...

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