قارن الطرق

	Lowry Land-Use Transport Model	نماذج التفاعل المكاني (الجاذبية)
المجال	Human Geography	التحليل المكاني
العائلة	Process / pipeline	Regression model
سنة النشأة	1964	1971
صاحب الطريقة	Ira S. Lowry	Alan Wilson (entropy-maximizing family)
النوع	Spatial-interaction-based land-use and activity allocation model of a metropolitan area	Model of flows between spatial origins and destinations
المصدر التأسيسي	Lowry, I. S. (1964). A Model of Metropolis (RM-4035-RC). RAND Corporation, Santa Monica, CA.	Wilson, A. G. (1971). A family of spatial interaction models, and associated developments. Environment and Planning A, 3(1), 1–32.
الأسماء البديلة	Lowry Model, Model of Metropolis, Lowry-Garin Model, Land-Use Transport Interaction Model	gravity model, spatial interaction model, competing destinations model, mekânsal etkileşim modeli
ذات صلة	4	4
الملخص	The Lowry model is the foundational operational model of urban land use, allocating where people live and where services locate around a given pattern of basic employment using spatial-interaction (gravity) distribution. Devised by Ira S. Lowry at the RAND Corporation in 1964 as 'A Model of Metropolis', it treats the city as a system in which basic jobs attract resident workers, those residents demand local services, and the resulting service jobs attract still more residents — a chain solved by iteration until the whole system balances. It launched the entire field of land-use and transport interaction modelling.	Spatial interaction models predict the volume of flows — migrants, commuters, shoppers, trade, trips — between origins and destinations as a function of the size of each place and the distance or cost separating them. By analogy to Newton's gravity, interaction rises with the 'mass' of origin and destination and falls with separation, and Wilson's 1971 entropy-maximizing family put these models on a rigorous footing for transport, migration, and retail analysis.