Progress on the POFFIS high frequency flow imaging method is described. Both theoretical and experimental advances have occurred during the current year. Some success was achieved at imaging an off-axis trailer hitch flaw. However, the issue of variable speed was not completely resolved and research on this issue will continue.

We prove that the only complex parabolic geometries on Calabi–Yau manifolds are the homogeneous geometries on complex tori. We also classify the complex parabolic geometries on homogeneous compact Kähler manifolds.