Business executives need a wide variety of skills to perform their jobs, but the route to becoming an executive can take a wide variety of paths. Preparation for executive positions usually includes business courses such as accounting, marketing, management, human relations and technical classes in the field of the business.
The Cavitron Ultrasonic Surgical Aspirator (CUSA) is a dissecting device that uses ultrasonic frequencies to fragment tissue. This highly-specialized instrument is available at only a handful of veterinary universities and human hospitals that focus on neurosurgery.
CUDA (Compute Unified Device Architecture) is a parallel computing platform and programming model created by NVIDIA and implemented by the graphics processing units (GPUs) that they produce.. - quoting first sentence of CUDA (Wikipedia). Also, see Parallel Programming and Computing Platform, NVIDIA's CUDA home page. Note that the name of NVIDIA's page for this makes it appear that this is the (only) way to do parallel computing.