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  2. Population dynamics - Wikipedia

    en.wikipedia.org/wiki/Population_dynamics

    Population dynamics is the type of mathematics used to model and study the size and age composition of populations as dynamical systems.Population dynamics is a branch of mathematical biology, and uses mathematical techniques such as differential equations to model behaviour.

  3. Population model - Wikipedia

    en.wikipedia.org/wiki/Population_model

    One of the most basic and milestone models of population growth was the logistic model of population growth formulated by Pierre François Verhulst in 1838. The logistic model takes the shape of a sigmoid curve and describes the growth of a population as exponential, followed by a decrease in growth, and bound by a carrying capacity due to ...

  4. Dynamic factor - Wikipedia

    en.wikipedia.org/wiki/Dynamic_factor

    In econometrics, a dynamic factor (also known as a diffusion index) is a series which measures the co-movement of many time series. It is used in certain macroeconomic models. A diffusion index is intended to indicate the changes of the fraction of economic data time series which increase or decrease over the selected time interval,

  5. Shift-share analysis - Wikipedia

    en.wikipedia.org/wiki/Shift-share_analysis

    The growth rates used in the calculations are annual rates, not growth from the beginning year in the study period, so the percent change from year k-1 to k in the economic variable nationwide for all industries combined is G k, while the national and regional industry-specific percent changes are G i k and g i k, respectively.

  6. List of dynamical systems and differential equations topics

    en.wikipedia.org/wiki/List_of_dynamical_systems...

    Exponential growth. Malthusian catastrophe; Exponential response formula; Simple harmonic motion. Phasor (physics) RLC circuit; Resonance. Impedance; Reactance

  7. Leslie matrix - Wikipedia

    en.wikipedia.org/wiki/Leslie_matrix

    The Leslie matrix is a discrete, age-structured model of population growth that is very popular in population ecology named after Patrick H. Leslie. [1] [2] The Leslie matrix (also called the Leslie model) is one of the most well-known ways to describe the growth of populations (and their projected age distribution), in which a population is closed to migration, growing in an unlimited ...

  8. Solow–Swan model - Wikipedia

    en.wikipedia.org/wiki/Solow–Swan_model

    The Solow–Swan model or exogenous growth model is an economic model of long-run economic growth.It attempts to explain long-run economic growth by looking at capital accumulation, labor or population growth, and increases in productivity largely driven by technological progress.

  9. Growth curve (statistics) - Wikipedia

    en.wikipedia.org/wiki/Growth_curve_(statistics)

    Growth curve model: [2] Let X be a p×n random matrix corresponding to the observations, A a p×q within design matrix with q ≤ p, B a q×k parameter matrix, C a k×n between individual design matrix with rank(C) + p ≤ n and let Σ be a positive-definite p×p matrix. Then

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