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  2. Simpson's rules (ship stability) - Wikipedia

    en.wikipedia.org/wiki/Simpson's_rules_(ship...

    Simpson's rules are a set of rules used in ship stability and naval architecture, to calculate the areas and volumes of irregular figures. [1] This is an application of Simpson's rule for finding the values of an integral, here interpreted as the area under a curve. Simpson's First Rule

  3. Simpson's rule - Wikipedia

    en.wikipedia.org/wiki/Simpson's_rule

    The formula above is obtained by combining the composite Simpson's 1/3 rule with the one consisting of using Simpson's 3/8 rule in the extreme subintervals and Simpson's 1/3 rule in the remaining subintervals. The result is then obtained by taking the mean of the two formulas.

  4. Rule of three (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Rule_of_three_(aeronautics)

    In aviation, the rule of three or "3:1 rule of descent" is a rule of thumb that 3 nautical miles (5.6 km) of travel should be allowed for every 1,000 feet (300 m) of descent. [ 1 ] [ 2 ] For example, a descent from flight level 350 would require approximately 35x3=105 nautical miles.

  5. A sleep psychologist recommends the 3-2-1 rule to help you ...

    www.aol.com/news/3-2-1-rule-expert-020757765.html

    The 3-2-1 rule. There are three things you should cut out before bed in order to achieve a better night’s sleep. Breus broke down what they are and when to quit them with these simple guidelines ...

  6. Security repercussions due to the 2006 transatlantic aircraft ...

    en.wikipedia.org/wiki/Security_repercussions_due...

    This procedure came to be known as "3-1-1 for carry-ons" (3.4 ounce containers in a 1 quart bag, 1 bag per passenger). Items purchased in the restricted or transit areas after clearing security could be brought on board without restriction. Other exemptions to this restriction include medications and breast milk. [37]

  7. 68–95–99.7 rule - Wikipedia

    en.wikipedia.org/wiki/68–95–99.7_rule

    In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr or 3 σ, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: approximately 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean ...

  8. 311 (telephone number) - Wikipedia

    en.wikipedia.org/wiki/311_(telephone_number)

    The first use of 3-1-1 for informational services was in Baltimore, Maryland, where the service commenced on 2 October 1996. [2] 3-1-1 is intended to connect callers to a call center that can be the same as the 9-1-1 call center, but with 3-1-1 calls assigned a secondary priority, answered only when no 9-1-1 calls are waiting.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!