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  2. Strain rate - Wikipedia

    en.wikipedia.org/wiki/Strain_rate

    The definition of strain rate was first introduced in 1867 by American metallurgist Jade LeCocq, who defined it as "the rate at which strain occurs. It is the time rate of change of strain." In physics the strain rate is generally defined as the derivative of the strain with respect to time. Its precise definition depends on how strain is measured.

  3. National Rural Letter Carriers' Association - Wikipedia

    en.wikipedia.org/wiki/National_Rural_Letter...

    The National Rural Letter Carriers' Association (NRLCA) is an American labor union that represents the rural letter carriers of the United States Postal Service (USPS). The NRLCA negotiates all labor agreements for the rural carrier craft with the USPS, including salaries, and represents members of the rural carrier craft in the grievance procedure.

  4. 2020 United States Postal Service crisis - Wikipedia

    en.wikipedia.org/wiki/2020_United_States_Postal...

    The 2020 United States Postal Service crisis was a series of events that caused backlogs and delays in the delivery of mail by the United States Postal Service (USPS). The crisis stems primarily from changes implemented by Postmaster General Louis DeJoy shortly after taking office in June 2020.

  5. Grumman LLV - Wikipedia

    en.wikipedia.org/wiki/Grumman_LLV

    At peak production, 95 LLVs were completed each day, at a rate of approximately one every five minutes. [12] Grumman invested $28 million into the factory, doubling its size to 213,000 sq ft (19,800 m 2) and increasing the workforce from 250 to 600. [12] The USPS purchased more than 100,000 of these vehicles, the last one in 1994. [1]

  6. Mortality rate - Wikipedia

    en.wikipedia.org/wiki/Mortality_rate

    The crude death rate is defined as "the mortality rate from all causes of death for a population," calculated as the "total number of deaths during a given time interval" divided by the "mid-interval population", per 1,000 or 100,000; for instance, the population of the U.S. was around 290,810,000 in 2003, and in that year, approximately 2,419,900 deaths occurred in total, giving a crude death ...

  7. USPS Forever Stamps Really Last Forever – Stock Up ... - AOL

    www.aol.com/finance/usps-forever-stamps-really...

    The United States Postal Service announced plans to raise the price of Forever stamps and other postage for 2023. Upon approval from the Postal Regulatory Commission, USPS says the cost of first ...

  8. Post office box - Wikipedia

    en.wikipedia.org/wiki/Post_office_box

    PO boxes in the lobby of a U.S. post office. Post office boxes are usually mounted in a wall of the post office, either an external wall or a wall in a lobby, so that staff on the inside may deposit mail in a box, while a key holder (some older post office boxes use a combination dial instead of a key) in the lobby or on the outside of the building may open their box to retrieve the mail.

  9. False positive rate - Wikipedia

    en.wikipedia.org/wiki/False_positive_rate

    The false positive rate is = +. where is the number of false positives, is the number of true negatives and = + is the total number of ground truth negatives.. The level of significance that is used to test each hypothesis is set based on the form of inference (simultaneous inference vs. selective inference) and its supporting criteria (for example FWER or FDR), that were pre-determined by the ...

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