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  2. Strategic Defense Initiative - Wikipedia

    en.wikipedia.org/wiki/Strategic_Defense_Initiative

    The Strategic Defense Initiative (SDI), derisively nicknamed the Star Wars program, was a proposed missile defense system intended to protect the United States from attack by ballistic nuclear missiles. The program was announced in 1983, by President Ronald Reagan. [1]

  3. SDI (arcade game) - Wikipedia

    en.wikipedia.org/wiki/SDI_(arcade_game)

    SDI - Strategic Defense Initiative, or simply titled SDI and sometimes known as Global Defense, is a 1987 horizontally scrolling shooter produced and released internationally in arcades by Sega. It was later ported to home computers and game consoles , some by other companies.

  4. Missile Defense Agency - Wikipedia

    en.wikipedia.org/wiki/Missile_Defense_Agency

    The Missile Defense Agency (MDA) is a component of the United States government's Department of Defense responsible for developing a comprehensive defense against ballistic missiles. It had its origins in the Strategic Defense Initiative (SDI) which was established in 1983 by Ronald Reagan and which was headed by Lt. General James Alan Abrahamson.

  5. List of photographs considered the most important - Wikipedia

    en.wikipedia.org/wiki/List_of_photographs...

    The photograph depicts the January 6 United States Capitol attack, in which a crowd of the supporters of then-president Donald Trump broke into the United States Capitol to prevent the presidential electoral vote count from certifying opposing candidate Joe Biden as president-elect.

  6. SDI - Wikipedia

    en.wikipedia.org/wiki/SDI

    Samsung SDI, battery manufacturer; Scottish Development International; Scuba Diving International; SDI Media Group, providing subtitling and language services; SDI Presence, US IT consultancy; SDI Technologies, a consumer electronics manufacturer, New Jersey, U.S.A. Service Desk Institute, for computer help desk staff; Slum Dwellers International

  7. The top 20 presidents in US history, according to historians

    www.aol.com/article/news/2018/02/20/the-top-20...

    Notable best presidents include George Washington at No.2, Thomas Jefferson at No. 7, and Barack Obama at No. 12.

  8. Spatial data infrastructure - Wikipedia

    en.wikipedia.org/wiki/Spatial_data_infrastructure

    The original example of an SDI is the United States National Spatial Data Infrastructure , first mandated in the OMB Circular A-16 in 1996. In Europe since 2007, INSPIRE is a European Commission initiative to build a European SDI beyond national boundaries; the United Nations Spatial Data Infrastructure ( UNSDI ) plans to do the same for over ...

  9. Selective dissemination of information - Wikipedia

    en.wikipedia.org/wiki/Selective_dissemination_of...

    SDI services pre-date the World Wide Web, and the term itself is somewhat dated. Contemporary analogous systems for SDI services include alerts, current awareness tools or trackers. These systems provide automated searches that inform the user of the availability of new resources meeting the user's specified keywords and search parameters.