The phrase "are being based" is correct and usable in written English.
It can be used when describing a current state of being established or founded on something, often in a passive construction.
Example: "The new policies are being based on the latest research findings to ensure their effectiveness."
Alternatives: "are founded on" or "are established on".
The SDT already showed good evidence of its value in research on health-related behaviours such as exercise and physical activity [ 44] and some recent web-based computer-tailored physical activity interventions are being based on the SDT [ 45].
Scottish voters need to know whether government policy and spending of public money are being based on the best judgment of ministers or on pressure from royals".
And though the concepts are still evolving, room types are being based around the themes of "glamour girl," "party girl," "dominatrix" and "biker girl".
EXCEM analysis may prove useful to investigators in engineering and other disciplines due to the methodology are being based on the quantities exergy, cost, energy and mass.
Israeli military officials have been providing Secretary of State George P. Shultz with what they describe as new details of Soviet involvement in Syria, asserting that Soviet submarines are being based and maintained in the Syrian port of Tartus, and that Soviet pilots are flying helicopters over Syrian territory.
Their uses are being based on their hardness and stability as they often behave like hard rocks in civil engineering projects.
Our understanding of who we are is based on our experience as God's children sharing the Eucharistic table.
Last fall former U.S. intelligence officials began warning that official pronouncements were being based on "cooked intelligence".
But career achievement is being based on criteria that have become subjective and vulnerable to the whims of irresponsible arbiters.
His new book is being based on this series, entitled "Elsewhere," which showed at the CCP.
