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The 1992 and 1993 editions of Macmillan's The Student Book: The Indispensable Applicant's Guide to UK Colleges, Polytechnics and Universities advised potential University of Ulster students that "Tiocfaioh ar la" [sic] was a common greeting on campus and meant "pleased to meet you". This error, suspected to be the result of a prank, was ...
Virtual Fixtures – first AR system, U.S. Air Force, Wright-Patterson Air Force Base (1992). Augmented reality (AR) is an interactive experience that combines the real world and computer-generated 3D content.
In statistics, econometrics, and signal processing, an autoregressive (AR) model is a representation of a type of random process; as such, it can be used to describe certain time-varying processes in nature, economics, behavior, etc.
An alternate reality game (ARG) is an interactive networked narrative that uses the real world as a platform and employs transmedia storytelling to deliver a story that may be altered by players' ideas or actions.
Extended reality (XR) is an umbrella term to refer to augmented reality (AR), mixed reality (MR), and virtual reality (VR). The technology is intended to combine or mirror the physical world with a "digital twin world" able to interact with it, [1] [2] giving users an immersive experience by being in a virtual or augmented environment.
AR systems layer virtual information over a camera live feed into a headset or smartglasses or through a mobile device giving the user the ability to view three-dimensional images. Mixed reality (MR) is the merging of the real world and virtual worlds to produce new environments and visualizations where physical and digital objects co-exist and ...
Aryl" is used for the sake of abbreviation or generalization, and "Ar" is used as a placeholder for the aryl group in chemical structure diagrams, analogous to “R” used for any organic substituent. “Ar” is not to be confused with the elemental symbol for argon. A simple aryl group is phenyl (C 6 H 5 −), a group derived from benzene ...
An antireflective, antiglare or anti-reflection (AR) coating is a type of optical coating applied to the surface of lenses, other optical elements, and photovoltaic cells to reduce reflection. In typical imaging systems, this improves the efficiency since less light is lost due to reflection.