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  2. Sector model - Wikipedia

    en.wikipedia.org/wiki/Sector_model

    The sector model, also known as the Hoyt model, is a model of urban land use proposed in 1939 by land economist Homer Hoyt. [1] It is a modification of the concentric zone model of city development. The benefits of the application of this model include the fact it allows for an outward progression of growth. As with all simple models of such ...

  3. Circular flow of income - Wikipedia

    en.wikipedia.org/wiki/Circular_flow_of_income

    The four-sector model adds the foreign sector to the three-sector model. [17] [18] [23] (The foreign sector is also known as the "external sector," the "overseas sector," [19] or the "rest of the world.") Thus, the four-sector model includes (1) households, (2) firms, (3) government, and (4) the rest of the world. It excludes the financial sector.

  4. Economic sector - Wikipedia

    en.wikipedia.org/wiki/Economic_sector

    Three sectors according to Fourastié Clark's sector model. One classical breakdown of economic activity distinguishes three sectors: [1] Primary: involves the retrieval and production of raw-material commodities, such as corn, coal, wood or iron. Miners, farmers and fishermen are all workers in the primary sector.

  5. Urban structure - Wikipedia

    en.wikipedia.org/wiki/Urban_structure

    This model was the first to explain distribution of social groups within urban areas. Based on one single city, Chicago, it was created by sociologist Ernest Burgess [2] in 1924. According to this model, a city grows outward from a central point in a series of concentric rings. The innermost ring represents the central business district. It is ...

  6. Three-sector model - Wikipedia

    en.wikipedia.org/wiki/Three-sector_model

    The three-sector model in economics divides economies into three sectors of activity: extraction of raw materials , manufacturing , and service industries which exist to facilitate the transport, distribution and sale of goods produced in the secondary sector . [1] The model was developed by Allan Fisher, [2] [3] [4] Colin Clark, [5] and Jean ...

  7. Homer Hoyt - Wikipedia

    en.wikipedia.org/wiki/Homer_Hoyt

    Homer Hoyt (June 14, 1895 – November 29, 1984) was an American economist known for his pioneering work in land use planning, zoning, and real estate economics. [2] He conducted notable research on land economics and developed an influential approach to the analysis of neighborhoods and housing markets.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Input–output model - Wikipedia

    en.wikipedia.org/wiki/Input–output_model

    The model depicts inter-industry relationships within an economy, showing how output from one industrial sector may become an input to another industrial sector. In the inter-industry matrix, column entries typically represent inputs to an industrial sector, while row entries represent outputs from a given sector.