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Positive deviance (PD) is an approach to behavioral and social change. It is based on the idea that, within a community, some individuals engage in unusual behaviors allowing them to solve problems better than others who face similar challenges, despite not having additional resources or knowledge.
Raoult's law (/ ˈ r ɑː uː l z / law) is a relation of physical chemistry, with implications in thermodynamics.Proposed by French chemist François-Marie Raoult in 1887, [1] [2] it states that the partial pressure of each component of an ideal mixture of liquids is equal to the vapor pressure of the pure component (liquid or solid) multiplied by its mole fraction in the mixture.
Vapour-liquid equilibrium of 2-propanol/water showing positive azeotropic behaviour. An azeotrope (/ ə ˈ z iː ə ˌ t r oʊ p /) [1] or a constant heating point mixture is a mixture of two or more liquids whose proportions cannot be changed by simple distillation. [2]
In thermodynamics, an activity coefficient is a factor used to account for deviation of a mixture of chemical substances from ideal behaviour. [1] In an ideal mixture, the microscopic interactions between each pair of chemical species are the same (or macroscopically equivalent, the enthalpy change of solution and volume variation in mixing is zero) and, as a result, properties of the mixtures ...
Although deviance may have a negative connotation, the violation of social norms is not always a negative action; positive deviation exists in some situations. Although a norm is violated, a behavior can still be classified as positive or acceptable. [4] Social norms differ throughout society and between cultures.
Positive deviations (above the mean) and negative deviations (below the mean) are included in the calculation. The mean signed deviation provides a measure of the average distance and direction of data points from the mean, offering insights into the overall trend and distribution of the data. [3]
The log-normal distribution, describing variables which can be modelled as the product of many small independent positive variables. The Lomax distribution; The Mittag-Leffler distribution; The Nakagami distribution; The Pareto distribution, or "power law" distribution, used in the analysis of financial data and critical behavior.
An ideal solution or ideal mixture is a solution that exhibits thermodynamic properties analogous to those of a mixture of ideal gases. [1] [2] The enthalpy of mixing is zero [3] as is the volume change on mixing. [2]