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  2. Circular flow of income - Wikipedia

    en.wikipedia.org/wiki/Circular_flow_of_income

    "Using the circular flow of income model to teach economics in the middle school classroom." The Social Studies 100.5 (2009): 233–242. Lloyd A. Metzler. “Three Lags in the Circular Flow of Income”, in: Income, Employment and Public; essays in honor of Alvin H. Hansen, Lloyd A Metzler; New York, W.W. Norton [1948]. pp. 11–32; Antoin E ...

  3. Past paper - Wikipedia

    en.wikipedia.org/wiki/Past_paper

    A past paper is an examination paper from a previous year or previous years, usually used either for exam practice or for tests such as University of Oxford, [1] [2] University of Cambridge [3] College Collections. Exam candidates find past papers valuable in test preparation.

  4. Circular economy - Wikipedia

    en.wikipedia.org/wiki/Circular_economy

    A circular economy (also referred to as circularity or CE) [1] is a model of resource production and consumption in any economy that involves sharing, leasing, reusing, repairing, refurbishing, and recycling existing materials and products for as long as possible.

  5. Curve-shortening flow - Wikipedia

    en.wikipedia.org/wiki/Curve-shortening_flow

    A flow is a process in which the points of a space continuously change their locations or properties over time. More specifically, in a one-dimensional geometric flow such as the curve-shortening flow, the points undergoing the flow belong to a curve, and what changes is the shape of the curve, its embedding into the Euclidean plane determined by the locations of each of its points. [2]

  6. Flow diagram - Wikipedia

    en.wikipedia.org/wiki/Flow_diagram

    Circular flow of income; Control flow diagram, a diagram to describe the control flow of a business process, process or program; Cumulative flow diagram, a tool used in queuing theory; Functional flow block diagram, in systems engineering; Data flow diagram, a graphical representation of the flow of data through an information system

  7. Flow graph (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Flow_graph_(mathematics)

    A designation "flow graph" that includes both the Mason graph and the Coates graph, and a variety of other forms of such graphs [7] appears useful, and agrees with Abrahams and Coverley's and with Henley and Williams' approach. [1] [2] A directed network – also known as a flow network – is a particular type of flow

  8. Circular mean - Wikipedia

    en.wikipedia.org/wiki/Circular_mean

    In mathematics and statistics, a circular mean or angular mean is a mean designed for angles and similar cyclic quantities, such as times of day, and fractional parts of real numbers. This is necessary since most of the usual means may not be appropriate on angle-like quantities.

  9. Curve - Wikipedia

    en.wikipedia.org/wiki/Curve

    In mathematics, a curve (also called a curved line in older texts) is an object similar to a line, but that does not have to be straight. Intuitively, a curve may be thought of as the trace left by a moving point.