Harris & Ullman's Multiple Nuclei Model

The Multiple Nuclei Model, developed by Chauncy Harris and Edward Ullman in 1945, describes urban land use as a city with multiple centers, or "nuclei," rather than a single downtown area. Each nucleus serves as a focal point for various activities, like business, industry, or housing, influenced by social, economic, and geographical factors. This model reflects the complexity of modern cities, where different areas develop specialized functions based on their unique characteristics and the needs of their populations, leading to a more decentralized urban landscape.