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  2. Charles F. Dowd - Wikipedia

    en.wikipedia.org/wiki/Charles_F._Dowd

    The borders of all zones were lines of longitude. In 1872, he modified his proposal so that the first zone was centered on the 75th meridian west of Greenwich, with the others 90°, 105°, and 120° west of Greenwich. Now all had geographic borders, such as the Appalachian Mountains for a portion of the border between the first and second zones ...

  3. Zone of control - Wikipedia

    en.wikipedia.org/wiki/Zone_of_control

    Some zone of control rules require enemy units must be attacked. [3] In some games, zones of control may be cancelled by terrain features such as rivers, cities, mountains, the presence of enemy units, or even by enemy zones of control. A couple of wargames even have zones of control partially affect friendly units, representing traffic ...

  4. Zone System - Wikipedia

    en.wikipedia.org/wiki/Zone_System

    The Zone System is a photographic technique for determining optimal film exposure and development, formulated by Ansel Adams and Fred Archer. [1] Adams described the Zone System as "[...] not an invention of mine; it is a codification of the principles of sensitometry, worked out by Fred Archer and myself at the Art Center School in Los Angeles, around 1939–40."

  5. Henry Gantt - Wikipedia

    en.wikipedia.org/wiki/Henry_Gantt

    Henry Laurence Gantt (/ ɡ æ n t /; May 20, 1861 – November 23, 1919) was an American mechanical engineer and management consultant who is best known for his work in the development of scientific management.

  6. History of PDF - Wikipedia

    en.wikipedia.org/wiki/History_of_PDF

    The Portable Document Format (PDF) was created by Adobe Systems, introduced at the Windows and OS/2 Conference in January 1993 and remained a proprietary format until it was released as an open standard in 2008. Since then, it has been under the control of an International Organization for Standardization (ISO) committee of industry experts.

  7. Western Electric rules - Wikipedia

    en.wikipedia.org/wiki/Western_Electric_rules

    The Western Electric rules are decision rules in statistical process control for detecting out-of-control or non-random conditions on control charts. [1] Locations of the observations relative to the control chart control limits (typically at ±3 standard deviations) and centerline indicate whether the process in question should be investigated for assignable causes.

  8. Hierarchy of hazard controls - Wikipedia

    en.wikipedia.org/wiki/Hierarchy_of_hazard_controls

    Hierarchy of hazard control is a system used in industry to prioritize possible interventions to minimize or eliminate exposure to hazards. [a] It is a widely accepted system promoted by numerous safety organizations. This concept is taught to managers in industry, to be promoted as standard practice in the workplace.

  9. Sandford Fleming - Wikipedia

    en.wikipedia.org/wiki/Sandford_Fleming

    Sir Sandford Fleming House (1866–1871), Brunswick St., Halifax, Nova Scotia In 1827, Fleming was born in Kirkcaldy, Fife, Scotland [2] to Andrew and Elizabeth Fleming. At the age of 14 he was apprenticed as a surveyor and in 1845, [3] at the age of 18, he immigrated with his older brother David to colonial Canada.