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The effect of geomagnetic storms on the F2 region was studied by calculating the deviation, ΔfoF2, of foF2 during 40 magnetic storms, ranging from moderate (Dst < −50 nT) to very intense (Dst < −200 nT) of the 21st solar cycle.
The solar activity dependence included in the long-term variation in the Sq amplitude was removed by calculating the deviation from a least-square fitted curve derived by a correlation analysis between the Sq amplitude and solar F10.7 index.
As a third criterion, the over- or underrepresentation of the corresponding 100 kb bin was taken into account by calculating the deviation of the number of variants in the corresponding bin to the mean of variants in the five bins up- and downstream, respectively, and scaling the value into a range of values between −1 and 1.
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Xu et al. [14] proposed a variable structure vehicle height control method for single-wheel air suspension system, and on this basis, by calculating the deviations of the pitch and roll angles of the vehicle body, a leveling controller is also designed based on the fuzzy logic control (FLC) algorithm.
Another way to characterize the difference between pixels is by calculating the angle deviation from the central pixel and its neighbors; this is called the main and derived vectorial values.
The approximate standard deviation of each threshold value was estimated by calculating the standard deviation of the average of each consecutive pair of reversal points (one peak and one valley) (Wetherill and Levitt, 1965).
Therefore, we quantified the distance between T and G by calculating the standard deviation of the element-wise difference between the two matrices, i.e., σ = v a r (T i j − G i j ).
The deviation between the toxicity predicted by CA and the observed toxicity of the combination product was quantified by calculating the model deviation ratio (MDR) that had been introduced by Belden et al. [15].
The dispersion is quantified by calculating the standard deviation of all inertia constants.
The red line shows diversification, which I measure by calculating the standard deviation, i.e., dispersion, of three-month returns across the national components of the Morgan index.
The repeatability of the contact angle measurements was evaluated by calculating the percent deviation of a certain reading from the preceding value.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com