Transcranial Doppler (TCD), first described in 1982 [1], is a noninvasive ultrasound (US) study that involves the use of a low-frequency (â¤2 MHz) transducer probe to insonate the basal cerebral arteries through relatively thin bone windows.
Details. as.character and is.character are generic: you can write methods to handle specific classes of objects, see InternalMethods. Further, for as.character the default method calls as.vector, so dispatch is first on methods for as.character and then for methods for as.vector.
A performance should be believable for an audience so that they may appear to the audience as truth. One of Stanislavski's methods for achieving the truthful pursuit of a character's emotion was his Magic If.. Actors were required to ask many questions of their characters and themselves.he 'system' and the method are often confused because one technique of the method is similar to and uses Stanislavski's 1911 concept of emotional memory in acting. The most controversial technique of the method teaches drawing emotions for a character from experiences and remembrances of the actor.