The phrase "a functional basis" is correct and usable in written English.
It can be used when discussing the underlying principles or foundations that support a particular function or system.
Example: "The design of the software is built on a functional basis that ensures efficiency and reliability."
Alternatives: "a practical foundation" or "a working framework".
By using the first n, no less than l, linear undamped modal functions as a functional basis and applying the Galerkin procedure, a 2n-degree-of-freedom discrete model with quadratic and cubic terms owing to geometric effect is derived.
A comprehensive catalog of human immune phenotypes could provide a functional basis for assessing genetic influence on immune function and variation in response to therapeutic interventions, as well as for rationally designing new targeted therapeutics.
"It should be extended on a functional basis," he said.
A major manufacturer of corrugated containers a few years ago shifted from a product basis to a functional basis.
Oellerich, T. et al. SLP-65 phosphorylation dynamics reveals a functional basis for signal integration by receptor-proximal adaptor proteins.
Results were assessed on a functional basis of walking mobility and level of dependency.
A plausible functional basis for a few loci, such as FGFR2 for breast cancer and MSMB for prostate cancer, has been elucidated, but the majority are not understood and suggest new mechanisms of carcinogenesis.
This paper presents a straightforward functional basis derived from piecewise linear approximation theory.
This prevailing southern orientation of buildings has a climatic functional basis, but it also appears to have been sanctified or conventionalized early in the Bronze Age in connection with ancestral ceremonies and with the worship of heaven and earth.
The theoretical formulation is given in a general form but the variational approach is finally applied in conjunction with a complete functional basis made of the appropriate admissible orthogonal polynomials.
Thus photosynthesis initially seemed to provide a reasonable functional basis for classification within the purple bacteria.
