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Gravity Model of Migration/Ushahidi
Rekodi ya ushahidi wa mbinu

Gravity Model of Migration

The gravity model of migration explains the volume of movement between two places as proportional to the product of their populations (masses) and inversely proportional to the distance separating them, by direct analogy to Newton's law of universal gravitation. Formalized for intercity movement by George Kingsley Zipf in 1946 and embedded in regional science by Walter Isard, it is the workhorse model of human geography for predicting migration, commuting, and other spatial-interaction flows.

Sources recorded, not reviewed

Rekodi ya chanzo

Nukuu zimehamishwa kwa uhalisi kutoka kwa rekodi ya chanzo cha mbinu. Hakuna uthibitisho wa kiwango cha dai unaodokezwa kutoka kwao.

Gravity Model of Migration and Spatial Interaction
Rekodi ya mbinu ya kiajenda · regression-model / human-geography
  • Zipf, G. K. (1946). The P1 P2 / D hypothesis: On the intercity movement of persons. American Sociological Review, 11(6), 677–686. · DOI 10.2307/2087063
  • Isard, W. (1960). Methods of Regional Analysis: An Introduction to Regional Science. MIT Press. · ISBN 9780262090032
Fungua mbinu kamili

Madai yaliyotunzwa

Madai yamehifadhiwa katika daftari la ushahidi, kila moja ikiwa na tathmini yake.

Hakuna madai yaliyotunzwa bado

Mwonekano huu haubuni tathmini ya dai wakati daftari haina yoyote.

Mbinu zinazohusiana

Zilizotengenezwa kutoka kwa grafu ya mbinu na kuonyeshwa kama uhusiano uliopendekezwa na mashine — hakuna dai la ushahidi linalodokezwa.

Often confused withAccessibility Analysismachine-suggested · Relational suggestion, not evidence.Often confused withCentral Place Analysismachine-suggested · Relational suggestion, not evidence.See alsoLocation Quotientmachine-suggested · Relational suggestion, not evidence.Same method familySpatial Interaction Modelmachine-suggested · Relational suggestion, not evidence.

Hali ya ushahidi

Sources recorded, not reviewed

Bibliographic sources are present. Claim-level evidence review has not been performed.

Vyanzo

2 nukuu zilizorekodiwa, ziliyonakiliwa kutoka kwa rekodi ya chanzo cha mbinu.

Vitendo

Fungua ukurasa wa mbinu
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