Carthage Carthage Carthage (; , "", "New City"; ; , "Qarṭāj") was the center or capital city of the ancient Carthaginian civilization, on the eastern side of the Lake of Tunis in what is now the Tunis Governorate in Tunisia. The city developed from a Phoenician colony into the capital of a Punic empire dominating the Mediterranean during the first millennium BC. The legendary Queen Dido is regarded as the founder of the city, though her historicity has been questioned. According to accounts by Timaeus of Tauromenium, she purchased from a local tribe the amount of land that could be covered
DIDO (software) in solving for the costates in optimal control problems. DIDO generates spectrally accurate solutions whose extremality can be verified using Pontryagin's Minimum Principle. Because no knowledge of pseudospectral methods is necessary to use it, DIDO is often used as a fundamental mathematical tool for solving optimal control problems. That is, a solution obtained from DIDO is treated as a candidate solution for the application of Pontryagin's minimum principle as a necessary condition for optimality. DIDO is used world wide in academia, industry and government laboratories. Thanks to NASA, DIDO was flight-proven in 2006. On November 5, 2006, NASA used DIDO