Class volumes were refined by projection matching and subsequently classes with similar class volumes were merged.
Few studies, however, are based on population-based samples, and many did not quantitatively estimate individual tissue class volumes.
The segmented tissue class volumes of each Talairach box, the cerebral-spinal fluid volume of the ventricles I, II, and III, and the intracranial volume were measured automatically and separately [ 24, 29].
Class volumes were reconstructed by random conical tilt (Radermacher et al, 1987), applying the tilt parameters of each pair, but using both tilted and untilted views to improve the quality of the volumes and reduce the effect of the missing cone.
Yet, each rate increase provides more incentive for businesses to switch to some other method of communicating with customers -- causing further decline in first-class volume and laying the groundwork for even more rate increases.
"The bottom line is that in the last three years, we've lost almost 27 percent of our first-class volume," Patrick Donahoe, the postmaster general, said in a phone interview.
Only the U.S. and Japanese postal systems, with their huge economies of scale and larger third-class volumes, deliver more mail per worker.
Furthermore, the opposite dominant class-volume is constricted to the class 320 340°, bearing13.7%, what results in the already mentioned shift from NNW SSE to NW SE.
Each class-volume that corresponded to the whole complex converged to the same 3D reconstruction (with a final resolution of 27 30 Å, according to the FSC at 0.5 cutoff criterion).
