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  2. Dunbar's number - Wikipedia

    en.wikipedia.org/wiki/Dunbar's_number

    Dunbar's number. Dunbar's number is a suggested cognitive limit to the number of people with whom one can maintain stable social relationships—relationships in which an individual knows who each person is and how each person relates to every other person. [1] [2]

  3. Stream order - Wikipedia

    en.wikipedia.org/wiki/Stream_order

    Stream order is an important aspect of a drainage basin. It is defined as the measure of the position of a stream in the hierarchy of streams. Tributaries are given a number one greater than that of the river or stream into which they discharge. So, for example, all immediate tributaries of the main stem are given the number "2".

  4. Number sign - Wikipedia

    en.wikipedia.org/wiki/Number_sign

    "Number sign" is the name chosen by the Unicode consortium. Most common in Canada [23] and the northeastern United States. [ citation needed ] American telephone equipment companies which serve Canadian callers often have an option in their programming to denote Canadian English , which in turn instructs the system to say number sign to callers ...

  5. Strahler number - Wikipedia

    en.wikipedia.org/wiki/Strahler_number

    Strahler number. In mathematics, the Strahler number or Horton–Strahler number of a mathematical tree is a numerical measure of its branching complexity. These numbers were first developed in hydrology, as a way of measuring the complexity of rivers and streams, by Robert E. Horton ( 1945) and Arthur Newell Strahler ( 1952, 1957 ).

  6. Petrograd Soviet Order No. 1 - Wikipedia

    en.wikipedia.org/wiki/Petrograd_Soviet_Order_No._1

    The Order No. 1 (Russian: Prikaz nomer odin) was issued March 1, 1917 (March 14 New Style) and was the first official decree of the Petrograd Soviet of Workers' and Soldiers' Deputies. The order was issued following the February Revolution in response to actions taken the day before by the Provisional Committee of the State Duma, headed by ...

  7. List of Boeing 787 orders and deliveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Boeing_787_orders...

    Contents. List of Boeing 787 orders and deliveries. The 787th Boeing 787 Dreamliner produced, operated by China Southern Airlines. This article lists the orders and deliveries for the Boeing 787 Dreamliner. As of December 2023, the largest airline order is by United Airlines for 221 aircraft. [a]

  8. List of Boeing 737 MAX orders and deliveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Boeing_737_MAX...

    82. 1,502. ^ In 2018, there were 675 net orders for 737 program, of which 13 orders were for 737NG. [2] ^ In 2019, there were 47 orders, but 183 cancellations of 737 MAX. [3] ^ In 2020, there were 112 orders, but 641 cancellations of 737 MAX. [4] ^ In 2021, there were 749 orders, but 374 cancellations of 737 MAX.

  9. Work order - Wikipedia

    en.wikipedia.org/wiki/Work_order

    A work order is usually a task or a job for a customer, that can be scheduled or assigned to someone. [1] Such an order may be from a customer request or created internally within the organization. Work orders may also be created as follow ups to inspections or audits. A work order may be for products or services.