one of the most challenges of iran foreign policy during of 2003-2015 was iran nuclear program. in these years the governments of seyed mohamad khatami and mahmoud ahmadinejad tried to solve the problem of iran nuclear case but this important issue only realized in hasan rouhani government. the main question here is that what factors did influence on decision making of iran’s officials and acqu...

In this thesis we address the problem of drift-free navigation for underwater vehicles performing harbor surveillance and ship hull inspection. Maintaining accurate localization for the duration of a mission is important for a variety of tasks, such as planning the vehicle trajectory and ensuring coverage of the area to be inspected. Our approach uses only onboard sensors in a simultaneous loca...

process of gastrulation in a whole series of different ways — for example, as a sequence of drawings taken from the classic work on the subject by Nieuwkoop and Faber, which have been 'morphed' together into a movie. There is also a movie showing the external movements of gastrulation recorded using a conventional light microscope, and also a movie showing the internal movements of gastrulation...

Video 1 recording narrated by Drs. Bonatti, Ashraf, and Hasan describing resectional techniques in robotically assisted mitral valve repair.