Elasticity of substitution. Elasticity of substitution is the elasticity of the ratio of two inputs to a production (or utility) function with respect to the ratio of their marginal products (or utilities). In a competitive market, it measures the percentage change in the ratio of two inputs used in response to a percentage change in their prices.
Oracle BPM. Homologation (from the verb homologate, meaning to approve or confirm officially) is the process of certifying or approving a product to indicate that it meets regulatory standards and specifications, such as safety and technical requirements.n English-speaking jurisdictions, homologation is often referred to as type approval or certificate of conformity, because homologating a product entails certifying that it meets the requirements specific to its type.
In the context of biology, homology is the existence of shared ancestry between a pair of structures, or genes, in different species. A common example of homologous structures in evolutionary biology are the wings of bats and the arms of primates. Evolutionary theory explains the existence of homologous structures adapted to different purposes as the result of descent with modification from a common ancestor.