rule of thumb
81Lipinski's Rule of Five — is a rule of thumb to evaluate druglikeness, or determine if a chemical compound with a certain pharmacological or biological activity has properties that would make it a likely orally active drug in humans. The rule was formulated by Christopher …
82Two-second rule — The two second rule is a rule of thumb intended to maintain a safe following distance when driving. The rule is that a driver should ideally try to stay at least two seconds behind any vehicle that is immediately in front of the driver s vehicle …
83Leibniz integral rule — In mathematics, Leibniz s rule for differentiation under the integral sign, named after Gottfried Leibniz, tells us that if we have an integral of the form: int {y 0}^{y 1} f(x, y) ,dy then for x in (x 0, x 1) the derivative of this integral is… …
84Three-date rule — The Three Date Rule is a dating rule of thumb which states that the third date is a milestone in determining whether a woman will consent to physical relations. This is not to be confused with the Three Day Rule cited in the movie… …
85Bancroft rule — The Bancroft rule states: The phase in which an emulsifier is more soluble constitutes the continuous phase. It was named after Wilder Dwight Bancroft, an American physical chemist.In all of the typical emulsions, there are tiny particles… …
8680-20 Rule — A rule of thumb that states that 80% of outcomes can be attributed to 20% of the causes for a given event. In business, the 80 20 rule is used to help managers identify problems and determine which operating factors are most important and should… …
87One Percent Rule — A rule of thumb used to determine if the monthly rent earned from a piece of investment property will exceed that property s monthly mortgage payment. The aim of the one percent rule is to have the rent be greater or equal to the mortgage payment …
88One-Third Rule — A rule of thumb that estimates the change in labor productivity based on changes in capital per hour of labor. Specifically, the one third rule states that on average an increase of 1% in capital per hour of labor will result in approximately a 0 …
89Hooper's Rule — is the observation, by Dr. Max Hooper, that a British hedgerow can be dated quite accurately by counting the number of species therein. His original formula, published in the book Hedges in 1974, is such that the age is equal to the number of… …
90Four Percent Rule — A rule of thumb used to determine the amount of funds to withdraw from a retirement account each year. The four percent rule seeks to provide a steady stream of funds to the retiree, while also keeping an account balance that will allow funds to… …
