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  2. UPS online tracking doesn't actually know where your ... - AOL

    www.aol.com/news/2010-03-17-ups-online-tracking...

    It turns up an interesting tidbit: Just because UPS's online tracking system tells you that your package is in a certain location doesn't mean it actually is. A few Fridays ago, I expected a ...

  3. Uninterruptible power supply - Wikipedia

    en.wikipedia.org/wiki/Uninterruptible_power_supply

    A tower type UPS with one IEC 60320 C14 input and three C13 outlets. A large data-center-scale UPS being installed by electricians. An uninterruptible power supply ( UPS) or uninterruptible power source is a type of continual power system that provides automated backup electric power to a load when the input power source or mains power fails.

  4. Package tracking - Wikipedia

    en.wikipedia.org/wiki/Package_tracking

    Package tracking. Package tracking or package logging is the process of localizing shipping containers, mail and parcel post at different points of time during sorting, warehousing, and package delivery to verify their provenance and to predict and aid delivery. Package tracking developed historically because it provided customers information ...

  5. Electronic monitoring in the United States - Wikipedia

    en.wikipedia.org/wiki/Electronic_monitoring_in...

    Electronic monitoring or electronic incarceration (e-carceration) is state use of digital technology to monitor, track and constrain an individual's movements outside of a prison, jail or detention center. Common examples of electronic monitoring of individuals under pre-trial or immigrant detention, house arrest, on probation or parole include ...

  6. United Parcel Service - Wikipedia

    en.wikipedia.org/wiki/United_Parcel_Service

    United Parcel Service. United Parcel Service, Inc. ( UPS) is an American multinational shipping & receiving and supply chain management company founded in 1907. [ 1] Originally known as the American Messenger Company specializing in telegraphs, UPS has expanded to become a Fortune 500 company [ 6] and one of the world's largest shipping couriers.

  7. Differential GPS - Wikipedia

    en.wikipedia.org/wiki/Differential_GPS

    Differential GPS. Differential Global Positioning Systems ( DGPSs) supplement and enhance the positional data available from global navigation satellite systems (GNSSs). A DGPS for GPS can increase accuracy by about a thousandfold, from approximately 15 metres (49 ft) to 1–3 centimetres ( ⁄2 – 1⁄4 in). [ 1]

  8. Universal polar stereographic coordinate system - Wikipedia

    en.wikipedia.org/wiki/Universal_Polar...

    As the name indicates, the UPS system uses a stereographic projection. Specifically, the projection used in the system is a secant version based on an elliptical model of the earth. The scale factor at each pole is adjusted to 0.994 so that the latitude of true scale is 81.11451786859362545° (about 81° 06' 52.3") North and South.

  9. Underwater acoustic positioning system - Wikipedia

    en.wikipedia.org/wiki/Underwater_acoustic...

    An underwater acoustic positioning system[ 1][ 2] is a system for the tracking and navigation of underwater vehicles or divers by means of acoustic distance and/or direction measurements, and subsequent position triangulation. Underwater acoustic positioning systems are commonly used in a wide variety of underwater work, including oil and gas ...

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