Dido At least two scholars have argued that the inclusion of the pyre as part of Dido's suicide—otherwise unattested in epic and tragedy—alludes to the self-immolation that took the life of Carthage's last queen (or the wife of its general Hasdrubal the Boetharch) in 146 BC. (6.450f) During his journey in the underworld Aeneas meets Dido and tries to excuse himself, but Dido does not deign to look at him. Instead she turns away from Aeneas to a grove where her former husband Sychaeus waits. Virgil has included most of the motifs from the original: Iarbas who desires Dido against her
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