+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + NASA Center + Publication Year + Subject + Availability Options + Item/Media Type Selected Navigations: Author > Grunwald, Arthur [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 5 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order Head-mounted spatial instruments II: Synthetic reality or impossible dream Author(s): Ellis, Stephen R.; Grunwald, Arthur Abstract: A spatial instrument is defined as a spatial display which has been either geometrically or symbolically enhanced to enable a user to accomplish a particular task. Research conducted over the past several years on 3-D ... NASA Center: Ames Research Center Publication Year: 1989 Added to NTRS: 2008-05-31 Accession Number: 90N29828; Document ID: 19900020512 A new illusion of projected three-dimensional space Author(s): Ellis, Stephen R.; Grunwald, Arthur Abstract: When perspective projections of orbital trajectories plotted in local-vertical local-horizontal coordinates are viewed with certain viewing angles, their appearance becomes perceptually unstable. They often lose their ... NASA Center: Ames Research Center Publication Year: 1987 Added to NTRS: 2005-10-13 Accession Number: 87N27409; Document ID: 19870017976; Report Number: A-87285, NAS 1.15:100006, NASA-TM-100006 Head-mounted spatial instruments: Synthetic reality or impossible dream Author(s): Ellis, Stephen R.; Grunwald, Arthur; Velger, Mordekhai Abstract: A spatial instrument is defined as a display device which has been either geometrically or symbolically enhanced to better enable a user to accomplish a particular task. Research conducted over the past several years on 3-D ... NASA Center: Ames Research Center Publication Year: 1988 Added to NTRS: 2004-11-03 Accession Number: 89N12184; Document ID: 19890002813 Tracking and letter classification under dichoptic and binocular viewing conditions Author(s): Gopher, Daniel; Grunwald, Arthur; Straucher, Zvi; Kimchi, Ruth Abstract: Subjects were required to fly a simulated helicopter path, while also classifying letter pairs presented intermitently at 5 retinal locations. Binocular and Dichoptic conditions were compared by employing color filters. ... NASA Center: NASA (non Center Specific) Publication Year: 1990 Added to NTRS: 2004-11-03 Accession Number: 92A11205; Document ID: 19920028581 Interactive displays for trajectory planning and proximity operations Author(s): Brody, Adam R.; Ellis, Stephen R.; Grunwald, Arthur; Haines, Richard F. Abstract: Rendezvous, docking, and other Space Station proximity operations (PROX OPS) will be conducted routinely in space. Real-time interactive visual aids and planning tools will be helpful, if not necessary, for future missions ... NASA Center: Ames Research Center Publication Year: 1993 Added to NTRS: 2004-11-03 Accession Number: 93A46422; Document ID: 19930062425 + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007