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Out of a total of 28,400 terawatt-hours (96.8 × 10 ^ 15 BTU) of energy used in the US in 1999, 10.5% was used in food production, [3] with the percentage accounting for food from both producer and primary consumer trophic levels. In comparing the cultivation of animals versus plants, there is a clear difference in magnitude of energy efficiency.
The Pareto principle may apply to fundraising, i.e. 20% of the donors contributing towards 80% of the total. The Pareto principle (also known as the 80/20 rule, the law of the vital few and the principle of factor sparsity [1] [2]) states that for many outcomes, roughly 80% of consequences come from 20% of causes (the "vital few").
The rule of nines was designed for adult patients. It is less accurate in young children due to their proportionally bigger heads and smaller mass in the legs and thighs, although one study did find it was accurate for patients as small as 10 kg. [1] To account for children's proportional differences, a "rule of nines for children" was proposed ...
The other 10% ("bottom 10") are nonproducers and should be fired. [ 1 ] [ 2 ] The often cited "80-20 rule", also known as the " Pareto principle " or the "Law of the Vital Few", whereby 80% of crimes are committed by 20% of criminals, or 80% of useful research results are produced by 20% of the academics, is an example of such rankings ...
In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr, 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, respectively.
The publication appeared in the journal Ecology and establishes the ten percent law whereby only 10% of the energy consumed at one trophic level is transferred to higher trophic levels. [5] Having suffered from chronic gastro-intestinal and liver inflammation, Lindeman died in 1942 at the age of 26, probably from hepatitis. [6]
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In adults, the Wallace rule of nines can be used to determine the total percentage of area burned for each major section of the body. [ 1 ] In burn cases that involve partial body areas, or when dermatologists are evaluating the Psoriasis Area and Severity Index (PASI) score, the patient's palm can serve a reference point roughly equivalent to ...