The phrase "age calculus" is not commonly used in written English and may not be widely understood.
It could be used in contexts discussing mathematical or analytical approaches to understanding age-related data or phenomena.
Example: "The researchers employed age calculus to analyze the demographic trends in the population study."
Alternatives: "age analysis" or "age computation".
Control patients: With patient consent, serum samples were obtained from the Tianjin Medical University General Hospital, China and are as follows: benign diseases: liver cirrhosis (n=25; mean age 61 years); calculus of bile duct (n=20; mean age 60 years); B hepatitis (n=20; mean age 59 years); and 60 blood donors (mean age 61 years).
"For 11 years, I've wanted to go to MIT," says Ahaan Rungta, now a 16-year-old freshman, who did math puzzles at age 3, calculus at 7, quantum mechanics at 13. Born in Calcutta, at two he moved to Fort Lauderdale, where growing up he longed for "like-minded people," so when he was 13, the family packed up and moved to Cambridge.
He mastered Geometry at age 6, Calculus at 10, and Relativity by 12.
After a round of news conferences, he joined college-age students for calculus, physics, French and a history course called "Warfare in Antiquity".
The cold, cruel calculus of age or the salary cap, or both, will send some of the team's most familiar faces out of the locker room.
In 1978, Newsweek magazine told of a 15-year-old junior who liked to shoot pool, play the flute, do magic tricks and compose anagrammatic crossword puzzles, adding that he had passed advanced calculus at age 12.
He finally got around to taking calculus at age 32, at which time he had already won tenure at Harvard University. .
Although the categories are crude, and the details may seem off-puttingly quaint (boss's wife likes you, get a pay rise), the game teaches something about the utilitarian calculus at an age when philosophy and economics rarely feature on the timetable: different kinds of good fortune are not easily interchangeable.
Such is moral calculus in the age of scarcity.
The nuclear weapons pioneered by Oppenheimer and his team ushered in a new age that forever changed the calculus of war between nations.
At the age of 6 months, renal calculus was found; few small calculi in both kidneys were detected by ultrasound.
