The phrase "are evaluated on a" is correct and usable in written English.
It can be used when discussing criteria or standards by which something is assessed or judged.
Example: "Students are evaluated on a scale of 1 to 10 based on their performance in the course."
Alternatives: "are assessed based on a" or "are judged according to a".
The competing approaches are evaluated on a one-step ahead forecasting exercise with time-series of power production averaged at a 1, 5, and 10-min rate, at the Horns Rev and Nysted offshore wind farms in Denmark.
We apply lazy evaluation, a demand-driven evaluation strategy in which signals in the circuit are evaluated on a 'need to do' basis, resulting in a considerable saving in circuit simulation time.
By applying the mission-oriented flying qualities evaluation approach, various aircraft with different control law parameters are evaluated on a ground-based simulator.
Second, while most charities' evaluations are focused on their expenses, for-profit companies are evaluated on a variety of metrics, with emphasis on growth indicators.
Communities should be central in creating metrics for police evaluation -- so that officers are not rewarded for more arrests but instead are evaluated on a set of civil rights metrics that reflect community values.
Small banks -- those with assets of $250 million or less -- are evaluated on a less stringent basis.
The anti-windup compensator designs are evaluated on a quadrotor unmanned aerial vehicle.
Models are defined on a reference site set and are evaluated on a test site set.
The performance of the diagnosis algorithms are evaluated on a simulated WSCC 9-bus system.
degrees can help get a student into a university, but credit transfers are evaluated on a case-by-case basis.
Requests by journalists, photographers, television and film crews to observe or film anywhere on campus are evaluated on a case-by-case basis.
