The phrase "are usually calculated at" is correct and usable in written English.
It can be used when discussing how certain values or metrics are typically determined or computed in a specific context.
Example: "The interest rates for loans are usually calculated at the beginning of each month based on the current market conditions."
Alternatives: "are typically computed at" or "are generally assessed at".
Peak cooling loads are usually calculated at early stages of the building project, when large uncertainties affect the input data.
The eigensolutions and associated eigensensitivities of an analytical model are usually calculated at the global structure level, which is time-consuming or even prohibitive for large-scale structures.
Since even large GWAS achieve only marginal evidence for association for many causal variants, PRS are usually calculated at a set of P-value thresholds, e.g. P T = 1 × 10 − 5, 1 × 10 − 4, …, 0.05, 0.1, …, 0.5.
However, the equivalent model is usually calculated at a specific steady state.
The ultimate static strength of tubular joints is usually calculated at the design stage based on empirical formulae incorporating the joint geometry, loading mode, and material's strength.
The area under the ROC curve (ROC AUC) summarizes the overall performance of a virtual screening experiment [2], whereas the partial area under the ROC curve (pAUC) allows to focus on a specific region of the curve and is usually calculated at a given early FPF value [3].
Thus, single-channel conductances were usually calculated at positive command potentials.
Specifically, to correct for changes in gene expression induced by non-treatment related influences, fold-change values for time-series data are usually calculated using treatment and control data at every timepoint [ 1].
PEPT is most commonly used to calculate particle velocities, whilst jet lengths are usually calculated from determinations of voidage.
However, doses are usually calculated from mean pharmacokinetic values.
