More than 89% of the life predictions based on the modeling procedure used were within a factor of 3 of the experimental lives for both materials.
For the 1000 and 250 cell samples, all volumes in the amplification procedure were reduced by a factor of 0.5 with the exception of in vitro transcription reactions.
Thus, our procedure has a runtime roughly a factor of 10 larger than if we had not needed permutations.
The overhead of the asynchronous procedure is approximately given by a factor of eight compared with the standard scheme.
As expected, the average number of calls to the closure computation procedure is reduced; indeed, by a factor of 1.78.
As the results of this study were derived from measurements by radiologists performing interventional procedures, it is not known whether a factor of 0.036 is applicable for other specialists performing interventional procedures, such as interventional cardiologists and electrophysiologists.
Although this problem is also NP-hard (Sahni and Gonzalez, 1976), we solve it by the use of a simple local search procedure within an approximation factor of 1−1/ n.
The structure was determined by direct methods and refined by least-squares procedure to an R factor of 0.082.
