No. However, if taking into account your rent payments you pay more than half of each parent’s support, you can claim each as your dependent. This results in a tax deduction in 2012 of $3,800 per parent. They don’t have to live with you to qualify as dependents, but each cannot have more than $3,800 of income for the year (not counting nontaxable Social Security benefits).
A method of depreciating the cost of a depreciable asset on a pro rata basis over its cost recovery period.