Lexikon der Economics. 2013.
Entity–attribute–value model — (EAV) is a data model to describe entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest. In… … Wikipedia
Entity-attribute-value model — (EAV), also known as object attribute value model and open schema is a data model that is used in circumstances where the number of attributes (properties, parameters) that can be used to describe a thing (an entity or object ) is potentially… … Wikipedia
Blob extraction — is an image segmentation technique that categorizes the pixels in an image as belonging to one of many discrete regions. Blob extraction is generally performed on the resulting binary image from a thresholding step. Blobs may be counted, filtered … Wikipedia
Supercritical fluid extraction — (SFE) is the process of separating one component (the extractant) from another (the matrix) using supercritical fluids as the extracting solvent. Extraction is usually from a solid matrix, but can also be from liquids. SFE can be used as a sample … Wikipedia
Liquid-liquid extraction — Liquid liquid extraction, also known as solvent extraction and partitioning, is a method to separate compounds based on their relative solubilities in two different immiscible liquids, usually water and an organic solvent. It is an of a substance … Wikipedia
Shale oil extraction — Shell s experimental in situ shale oil facility, Piceance Basin, Colorado, United States Process type Chemical Industrial sector(s) Chemical industry, oil indus … Wikipedia
Oil shale extraction — is an industrial process in which kerogen mdash;a mixture of organic chemical compounds (including hydrocarbons) found in oil shale mdash;is converted into synthetic crude oil through pyrolysis. In pyrolysis, oil shale is heated in the absence of … Wikipedia
Copper extraction techniques — This article is about historical production methods. For modern methods, see Flash smelting. The Chino open pit copper mine in New Mexico … Wikipedia
Acid-base extraction — is a procedure using sequential liquid liquid extractions to purify acids and bases from mixtures based on their chemical properties. Acid base extraction is routinely performed during the work up after chemical syntheses and for the isolation of … Wikipedia
Plus-value (marxisme) — La plus value (ou parfois survaleur) est un concept forgé par Proudhon, puis repris et développé par Karl Marx dans sa critique de l économie politique, et détaillé dans Le Capital. Karl Marx reprend et complète la théorie de la valeur des… … Wikipédia en Français
