Dido, Queen of Carthage (play) She brings Aeneas back, who denies he intended to leave. Dido forgives him, but as a precaution removes all the sails and tackle from his ships. She also places Ascanius in the custody of the Nurse, believing that Aeneas will not leave without him. However, "Ascanius" is really the disguised Cupid. Dido says that Aeneas will be king of Carthage and anyone who objects will be executed. Aeneas agrees and plans to build a new city to rival Troy and strike back at the Greeks. Mercury appears with the real Ascanius (a.k.a. Cupid) and informs Aeneas that his destiny is
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