The phrase "and efficient as a" is correct and usable in written English.
It can be used when making a comparison to highlight the efficiency of something in relation to another object or concept.
Example: "This new software is as efficient as a well-oiled machine in processing data."
Alternatives: "and effective as a" or "and productive as a".
All of the stores are as bright, cheery and efficient as a suburban McDonald's restaurant.
Everything about Any.Do feels elegant and efficient, as a personal assistant should be.
They slow the pace of change, and an economy becomes less nimble and efficient as a result.
Indeed, his E.R. is as quiet and efficient as a Swiss watch, and he still expresses amazement at what he saw when he worked briefly in Seattle.
At the heart of it all is Lydon's vocal, as sharp and efficient as a can opener, still a spine-shivering delight to hear performing live.
DaimlerChrysler claims that its Bluetec fuel, available in the United States, makes its diesel engines as clean and efficient as a hybrid.
It filled the amphitheater of the new World Trade Center rising downtown — normally as chaotic and efficient as an ant hill — with an otherworldly silence, its jackhammers and great swinging cranes strangely stilled in veils of holiday tranquillity.
An artificial autonomous agent in such cases can be more useful and efficient as an actor in a human team, if its behavior is believable, i.e., similar to the naturally motivated human behavior.
This approach is both practical for the decision-maker and efficient, as it leads directly to a Pareto-optimal solution.
First, acknowledge that making your interactions with each other as productive and efficient as possible is going to require a proactive approach.
Dr. Stiglitz shows how Americans can construct a more dynamic and efficient economy, as well as a fairer society for everyone.
