The phrase "a proper and efficient" is correct and usable in written English.
It can be used when describing something that is both appropriate and effective in achieving a desired outcome.
Example: "To ensure the success of the project, we need to implement a proper and efficient strategy."
Alternatives: "an appropriate and effective" or "a suitable and productive".
Practitioners had difficulty manipulating the computer model to a proper and efficient orientation.
Thus a proper and efficient modeling of the channel is required to transfer data between implants and other devices.
However, a physical model provides the necessary depth cues and shape understanding in a proper and efficient 3D representation.
Thus, to design an optimal communication link between nodes placed within or on the human body a proper and efficient path loss (PL) model is required.
Actually, the given approach can be beneficial to guide structural engineers for choosing the significant design variables in a proper and efficient way without violating economic feasibility requirements.
Also, a competitive and cooperative (CC) operator is designed for a particle to utilize the shared information in a proper and efficient way.
Correct identification and sub-classification of diseases such as cancer is a prerequisite for proper and efficient treatment.
A cardinal prerequisite for the proper and efficient management of a network, especially an ISP network, is to understand the traffic that it carries.
In response, he reported: D.F.A.T. told us there were documents relating to his imprisonment and death but we weren't entitled to see them because their release could have a substantial adverse impact on the proper and efficient conduct of consular operations.
These features primarily determine the torque characteristics and thus the proper and efficient functioning of a PM machine.
Proper and efficient data transfer is a key issue for DTN.
