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| Population Potential Model× | Central Place Analysis× | |
|---|---|---|
| Πεδίο | Human Geography | Human Geography |
| Οικογένεια | Process / pipeline | Process / pipeline |
| Έτος προέλευσης≠ | 1947 | 1933 |
| Δημιουργός≠ | John Q. Stewart | Walter Christaller |
| Τύπος≠ | Social-physics measure of the cumulative influence of population at a location | Theory and analytic framework for the size, number, and spacing of settlements |
| Θεμελιώδης πηγή≠ | Stewart, J. Q. (1947). Empirical mathematical rules concerning the distribution and equilibrium of population. Geographical Review, 37(3), 461–485. DOI ↗ | Christaller, W. (1966). Central Places in Southern Germany (C. W. Baskin, Trans.). Prentice-Hall. (Original work published 1933). ISBN: 9780131226302 |
| Εναλλακτικές ονομασίες | Potential of Population, Market Potential Model, Demographic Potential, Stewart Potential | Central Place Theory, Christaller Central Place Model, Settlement Hierarchy Analysis, Central Place Hierarchy |
| Συναφείς | 4 | 4 |
| Σύνοψη≠ | The population potential model measures the cumulative influence that all of a region's population exerts on a given point, weighting each place's population inversely by its distance. Introduced by the astronomer-turned-social-scientist John Q. Stewart in 1947 as part of his 'social physics', it borrows the gravitational-potential analogy from physics: every population mass contributes potential at a point in proportion to its size and in inverse proportion to its distance. Summed across all places, the result is a smooth potential surface that maps relative accessibility, market reach, and demographic pressure. | Central place analysis is the study of the size, number, and spacing of settlements as service centres, grounded in Walter Christaller's central place theory of 1933. It explains why settlements form an orderly hierarchy — many small villages, fewer towns, a handful of cities — and why higher-order centres are spaced farther apart and offer more specialized goods, deriving the famous nested pattern of hexagonal market areas from two economic concepts: the range and the threshold of a good. |
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