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  2. Train order operation - Wikipedia

    en.wikipedia.org/wiki/Train_order_operation

    In train order operation, a "train order" is an order issued by or through a proper railway official to govern the movement of trains". [ 1 ] Train order operation was widely used by the railroads of North America before the days of centralized traffic control (CTC), direct traffic control (DTC), and the use of track warrants conveyed by radio.

  3. Lateralus (song) - Wikipedia

    en.wikipedia.org/wiki/Lateralus_(song)

    The song is known for its distinct time signatures and corresponding lyrical patterns. The time signatures of the chorus of the song change from 9/8 to 8/8 to 7/8; as drummer Danny Carey says, "It was originally titled 9-8-7.

  4. Eulerian number - Wikipedia

    en.wikipedia.org/wiki/Eulerian_number

    In combinatorics, the Eulerian number (,) is the number of permutations of the numbers 1 to in which exactly elements are greater than the previous element (permutations with "ascents"). Leonhard Euler investigated them and associated polynomials in his 1755 book Institutiones calculi differentialis .

  5. Petrograd Soviet Order No. 1 - Wikipedia

    en.wikipedia.org/wiki/Petrograd_Soviet_Order_No._1

    The order was highly controversial. Leon Trotsky may have called it "the only worthy document of February Revolution," [7] but others have seen the measure as an effort to prevent continuation of Russia's war effort by crippling the government's control of the military, or even as part of a plot by the Bolsheviks to undermine the Provisional Government.

  6. List of Boeing 777 orders and deliveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Boeing_777_orders...

    The number of 777 customers had grown to 25 airlines by June 1997, with 323 aircraft on order. [2] On August 26, 2004, Singapore Airlines followed up with a US$4 billion order for the 777-300ER, including 18 firm orders and 13 options. [3] The combined orders would make the carrier's 777 fleet number 77 when deliveries were complete. [3]

  7. Order of magnitude - Wikipedia

    en.wikipedia.org/wiki/Order_of_magnitude

    The order of magnitude of a number is, intuitively speaking, the number of powers of 10 contained in the number. More precisely, the order of magnitude of a number can be defined in terms of the common logarithm, usually as the integer part of the logarithm, obtained by truncation.

  8. Mouth Sounds - Wikipedia

    en.wikipedia.org/wiki/Mouth_Sounds

    Mouth Sounds received mostly positive reviews from critics. Katie Rife, writing for The A.V. Club, called the mixtape "brilliant," citing its ability to toy with the listener's nostalgia held towards the songs included, and wrapped up her review by suggesting the album to those that enjoy the thought of "dropping acid at a Media Play going-out-of-business sale."

  9. Order tracking (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Order_tracking_(signal...

    In rotordynamics, order tracking is a family of signal processing tools aimed at transforming a measured signal from time domain to angular (or order) domain. These techniques are applied to asynchronously sampled signals (i.e. with a constant sample rate in Hertz) to obtain the same signal sampled at constant angular increments of a reference shaft.