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  2. Two-platoon system - Wikipedia

    en.wikipedia.org/wiki/Two-platoon_system

    A rule allowing unlimited substitution was initiated, with players now permitted to rest and return as many times as they wished per quarter. The limited pool of talented players was thus better conserved. This rules change had the corollary effect of opening the game to offensive and defensive specialization — the so-called "two-platoon" system.

  3. Substitution (sport) - Wikipedia

    en.wikipedia.org/wiki/Substitution_(sport)

    Free substitution or rolling substitution is a rule in some sports that allows players to enter and leave the game for other players many times during the course of a game, generally during a time-out or other break in live play; and for coaches to bring in and take out players an unlimited number of times.

  4. Ohio State football coach Ryan Day agrees with NCAA rule ...

    www.aol.com/ohio-state-football-coach-ryan...

    During his weekly radio appearance, Ohio State coach Ryan Day addressed the NCAA's rule change concerning illegal substitution late in games.

  5. Substitute (association football) - Wikipedia

    en.wikipedia.org/wiki/Substitute_(association...

    A maximum of 3 "substitution opportunities" are provided to a side during normal time, and an extra opportunity during extra time. Substitutions can be made during half-time breaks during normal and extra time, and full time breaks (before the start of extra time), but do not count as substitution opportunities. [2] There is also a provision of ...

  6. 2011 Ohio Issue 2 - Wikipedia

    en.wikipedia.org/wiki/2011_Ohio_Issue_2

    The Ohio Collective Bargaining Limit Repeal appeared on the November 8, 2011 general election ballot in the state of Ohio as a veto referendum.Senate Bill 5 (SB5) was repealed by Ohio voters after a campaign by firefighters, police officers and teachers against the measure, [1] which would have limited collective bargaining for public employees in the state.

  7. Hume-Rothery rules - Wikipedia

    en.wikipedia.org/wiki/Hume-Rothery_rules

    For alloys containing transition metal elements there is a difficulty in interpretation of the Hume-Rothery electron concentration rule, as the values of e/a values (number of itinerant electrons per atom) for transition metals have been quite controversial for a long time, and no satisfactory solutions have yet emerged. [9] [10]

  8. Carnegie Unit and Student Hour - Wikipedia

    en.wikipedia.org/wiki/Carnegie_Unit_and_Student_Hour

    Again, the motive here was to standardize educational outputs and faculty workloads. Cooke established the collegiate Student Hour as "an hour of lecture, of lab work, or of recitation room work, for a single pupil" [3] per week (1/5 of the Carnegie Unit's 5-hour week), during a single semester (or 15 weeks, 1/2 of the Carnegie Unit's 30-week ...

  9. Santa Fe 3751 - Wikipedia

    en.wikipedia.org/wiki/Santa_Fe_3751

    Built in May 1927 by the Baldwin Locomotive Works (BLW), No. 3751 was BLW's and the Santa Fe Railway's first 4-8-4 type, costing $99,712.77. [3] Tests showed that the new locomotive was 20% more efficient and powerful than the 3700 class 4-8-2 Mountain types, which at the time were Santa Fe's most advanced steam locomotives. [3]