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The R-value is the building industry term [2] for thermal resistance "per unit area." [4] It is sometimes denoted RSI-value if the SI units are used. [5] An R-value can be given for a material (e.g. for polyethylene foam), or for an assembly of materials (e.g. a wall or a window). In the case of materials, it is often expressed in terms of R ...
Value engineering ( VE) is a systematic analysis of the functions of various components and materials to lower the cost of goods, products and services with a tolerable loss of performance or functionality. Value, as defined, is the ratio of function to cost. Value can therefore be manipulated by either improving the function or reducing the cost.
Value-based Engineering (VBE) is a system development and innovation approach that implements the IEEE St. 7000 "Model Process for Addressing Ethical Concerns during System Design", released in 2021. [1] The standard was developed over a five-year period based on the initial work published in "Ethical IT innovation: A value-based system design ...
A material property is an intensive property of a material, i.e., a physical property or chemical property that does not depend on the amount of the material. These quantitative properties may be used as a metric by which the benefits of one material versus another can be compared, thereby aiding in materials selection .
Economics portal. Marxism portal. v. t. e. The labor theory of value ( LTV) is a theory of value that argues that the exchange value of a good or service is determined by the total amount of "socially necessary labor" required to produce it. The contrasting system is typically known as the subjective theory of value .
Value added is a higher portion of revenue for integrated companies (e.g. manufacturing companies) and a lower portion of revenue for less integrated companies (e.g. retail companies); total value added is very nearly approximated by compensation of employees, which represents a return to labor, plus earnings before taxes, representative of a ...
a constant that is between zero and one, i.e. for each asset or revenue account, transaction, etc. Materiality, if quantified in any of the above ways, is a function of company size as measured by assets and revenues: the larger the company, the larger materiality limit.
Poisson's ratio. In materials science and solid mechanics, Poisson's ratio ν ( nu) is a measure of the Poisson effect, the deformation (expansion or contraction) of a material in directions perpendicular to the specific direction of loading. The value of Poisson's ratio is the negative of the ratio of transverse strain to axial strain.