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  2. Moreau envelope - Wikipedia

    en.wikipedia.org/wiki/Moreau_envelope

    The Moreau envelope has important applications in mathematical optimization: minimizing over and minimizing over are equivalent problems in the sense that the sets of minimizers of and are the same. However, first-order optimization algorithms can be directly applied to M f {\displaystyle M_{f}} , since f {\displaystyle f} may be non ...

  3. History of United States postage rates - Wikipedia

    en.wikipedia.org/wiki/History_of_United_States...

    The ship fee, including the ship rate on letters for delivery at the port of entry, were on a per letter basis, rather than weight. The United States issued its first postage stamps in 1847. Before that time, the letters' rates, dates, and origins were written by hand or sometimes in combination with a handstamp device. [1]

  4. Piping corrosion circuit - Wikipedia

    en.wikipedia.org/wiki/Piping_corrosion_circuit

    Piping corrosion circuit or Corrosion loop / Piping Circuitization and Corrosion Modelling, is carried out as part of either a Risk Based Inspection analysis (RBI) or Materials Operating Envelope analysis (MOE). It is the systematization of the piping components versus failure modes analysis into materials operating envelope.

  5. What’s changing for USPS in 2025? - AOL

    www.aol.com/changing-usps-2025-113304901.html

    The new rates require approval from the commission before taking effect. The Postal Service said it will not increase prices for Mailing Services in January, meaning the cost of sending regular ...

  6. Cover (philately) - Wikipedia

    en.wikipedia.org/wiki/Cover_(philately)

    In philately, the term cover pertains to the outside of an envelope or package with an address, typically with postage stamps that have been cancelled and is a term generally used among stamp and postal history collectors. The term does not include the contents of the letter or package, although they may add interest to the item if still present.

  7. U.S. Special Delivery (postal service) - Wikipedia

    en.wikipedia.org/wiki/U.S._Special_Delivery...

    The series ended in 1922 when a messenger riding a motorcycle was shown, replaced by a truck in 1925. In the following years the truck and motorcycle pictures reappeared as rates changed and various color, printing and perforation varieties were created. [5] Finally in 1954 a design featuring hands passing a letter went into use.

  8. Shmoo plot - Wikipedia

    en.wikipedia.org/wiki/Shmoo_plot

    When this is done, the operating envelope typically extends to the border of the plot in one or more directions. One example of such “shmooing” is the procedure for optimising the two operating variables of the Read Only Storage (ROS) in the IBM S/360 Model 65 Central Processing Unit (CPU). While the CPU is running a diagnostic test program ...

  9. Postal stationery - Wikipedia

    en.wikipedia.org/wiki/Postal_stationery

    1620 Venetian prepaid letter sheet. Postal stationery has been in use since at least 1608 with folded letters bearing the coat of arms Venice. Other early examples include British newspaper stamps that were first issued in 1712, 25-centime letter sheets that were issued in 1790 by the government of Luxembourg, and Australian postal stationery that predated more well known issues like the ...