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The Cormack–Lehane system classifies views obtained by direct laryngoscopy based on the structures seen. It was initially described by R.S. Cormack and J. Lehane in 1984 as a way of simulating potential scenarios that trainee anaesthetists might face. [1] A modified version that subdivided Grade 2 was initially described in 1998. [2]
The score is assessed by asking the patient, in a sitting posture, to open their mouth and to protrude the tongue as much as possible. [1] The anatomy of the oral cavity is visualized; specifically, the assessor notes whether the base of the uvula, faucial pillars (the arches in front of and behind the tonsils) and soft palate are visible.
"The most useful modification is a subclassification of grade 3 into 3a when the epiglottis can be lifted from the posterior pharyngeal wall and 3b when it cannot be lifted." Indeed this is true, and in fact, it is more important whether the epiglottis can be lifted or not, rather than the vocal cords or arithenoids are fully seen (2a/2b)
Carmack used these capabilities to create a buffer that is 64 pixels wider and taller than the screen, leaving room for two extra rows and columns of tiles in the buffer off the edge of the screen. He used the offset capabilities of the card to let the screen slide through the buffer for smooth scrolling, which partially reveals the extra tiles.
The Akai VS-2 was the first VCR with an on-screen display, originally named the Interactive Monitor System. By displaying the information directly on the television screen, this innovation eliminated the need for the user to be physically near the VCR to program recording, read the tape counter, or perform other common features.
GrADS has a programmable interface (scripting language) that allows for sophisticated analysis and display applications. Scripts can display buttons and drop menus as well as graphics, and then take action based on user point-and-clicks. GrADS can be run in batch mode, and the scripting language facilitates using GrADS to do long overnight ...
Channel Technologies Group (CTG) is a California-based company that designs and manufactures piezoelectric materials and transducers for military and commercial market customers. [ 2 ] Based in Santa Barbara, Calif. and with a second manufacturing site in Bolingbrook, Ill., Channel Technologies Group (CTG) first began manufacturing ...
Sky Movies and Film4 do not use DOGs, but Channel 4 (starting on 19 June 2017), Channel 4 HD and the time shift channel Channel 4+1 all do. Some stations display their on-screen graphics permanently. The UKTV channels remove them during commercials and trailers, with some Sky channels removing them altogether at certain times into a program.