Most models developed to date, are however empirically derived, and therefore only applicable to a narrow range of filter media and operating conditions.
As we might put it, that Hugh is expecting to see me today sometimes gives me a reason to go up to London and sometimes does not; it is a derived, and therefore variable, reason.
Since no arterial blood sampling could be performed on the conscious rats, and FDG has no reference tissue model in the rat brain, no input function could be derived and therefore the tracer kinetics could not be modelled.
Table 1 Network dimensioning methodology (configuration #1) a This is an integer-programming problem for which analytic expressions of the blocking probabilities cannot be derived and, therefore, they have to be calculated numerically.
Reproducibility is a crucial property of data since it allows users to understand and verify how data were derived, and therefore allows them to put their trust in such data.
With laser scanning, while the metric and geometry of the captured objects can be derived and therefore are known, and an accuracy measure for any point in the point cloud can be derived, the texturing and visualisation will be poor due to the quality of the on-board imaging sensor.
