"a separate calculation" is a correct and usable phrase in written English.
It can be used to refer to a distinct or individual calculation that is separate from others in a specific situation or context. Here is an example: "The total cost of the project will require several calculations, but the cost of materials will be determined by a separate calculation based on current market prices."
This year, they calculated the rankings for Gelf, and included a separate calculation of what they call hyper-critical calls when the team was facing fourth down with less than five yards to go.
In addition to these analyses we also performed a separate calculation addressing the same question: for each feature dimension, we calculated the mean feature values within the speaking character and within the whole frame and compared the proportion of the two.
To confirm the phylogeny, we calculated the proportion of recombinant segments in each BAPS cluster (including a separate calculation for ST131), which were intracluster specific, and the proportion of recombinant segments, which were shared across clusters, or intercluster recombination events.
A separate calculation by Germany's environment ministry puts the figure for Germany alone at 100m tonnes in 2012.
Transfers can be found in a separate calculation for personal income, which consists of compensation for workers, proprietors' income, rental income, interest and dividend income, and transfers.
A separate calculation by the Southwestern University of Finance and Economics for the year of 2010 showed a result of 0.61.
Due to this calculation procedure, BioSTAR does not need a separate ET0 calculation (e.g., Penman, FAO, Turc, or other) to compute crop transpiration (Figure 12): P G = P max × 1 - exp - Qe × PPFDI / P max, (1).
In this paper, the reasons of the long computing time are elaborated and an alternative method of separate calculation is adopted to save time.
At the end of the calendar year, Lucent will have to make a separate pension calculation, using a different methodology.
Bowe applied a separate probability calculation to each seat and comes up with a loss of 12.
In a separate inverse calculation, the simulation is used to estimate Z time scales from each of the measured OH, CH, and number density data.
