The atmospheric glory caused by backscattering of sunlight from clouds usually has circular colored rings. However, glories with noncircular rings are frequently observed, especially along the edges of clouds. Noting that the angular radius of the rings of glories is a sensitive indicator of the size of the water droplets in clouds, several images of glories have been examined in an attempt to ...

Micromachine gas turbines require extremely high rotor speed to realize the same impeller tip speed to the large gas turbines, by very small diameter of the impellers. Hence, the rotordynamics is one of the critical issues. Especially, the bearing speed will exceed the range of experience in any existing turbomachines, and hence the method to achieve the stable operation at the required design ...

Despite an increased interest in complex independent component analysis (ICA) during the last two decades, a closed form expression for the Cramér-Rao bound (CRB) for the demixing matrix is not known yet. In this paper, we fill this gap by deriving a closed-form expression for the CRB of the demixing matrix for instantaneous noncircular complex ICA. It contains the CRB for circular complex ICA ...