What is Multiple nuclei model?
[[File:Multiple nuclei model.svg|lang=en|thumb|450px|]] The '''Multiple nuclei model''' is a basic [[wikt:model|model]] in modern [[urban planning]].<ref name=Warf34>''Encyclopedia of Human Geography'', ed. Barney Warf (Thousand Oaks, CA: Sage Publications, 2006), p. 34</ref> It was [[Wikt:developed|developed]] by [[Chauncy Harris]] and [[Edward Ullman]] in 1945.<ref>Yan Liu, ''Modelling Urban Development with Geographical Information Systems and Cellular Automata'' (Boca Rattan, FL: CRC press, 2009), p. 9</ref> It was the third model in the [[Chicago school (architecture)]].<ref name=Warf34/> The main idea was that when a [[city]] reached a certain size its downtown [[central business district]] (CBD) could no longer serve the whole city.<ref name=Ross277.278>Simon Ross; John Morgan; Richard Heelas, ''Essential AS Geography'' (Cheltenham: S. Thornes, 2000), pp. 277–278</ref> [[Shop]]s and [[office]]s move to the outer parts of the city. They grow and attract other businesses. This causes the areas around them to grow into new business centers.<ref name=Ross277.278/> == Related pages == * [[Grid plan]] * [[Sector model]] * [[Concentric zone model]] * [[Linear city model]] == References == {{reflist}} [[Category:Urban planning]] [[Category:Urban geography]] {{stub}}