large city and the group system
Creation of group systems populated areas - a new stage of development of the controlled dispersal associated with the solution of problems of complex organizations and the formation of a balanced socio-economic and planning - the spatial structure of each individual settlements and the totality of occupied places in the system. Since the requirements of complexity and interconnectedness of localities are standard in urban development and resettlement, it is necessary to explain something new that can be embedded into the group system of settlements in both functional and planning concept. It is, above all, in making the decisive for determining the boundaries of a group of social criteria daily availability of its center.
This criterion - a sort of "controller" to identify the boundaries of interrelated settlements, within which is localized and can be efficiently organized by the satisfaction of diverse (and I first of all - labor), activities of daily living needs of the population. If the integrity of the city is determined by the unity of functioning within it's urban population, the integrity of the group system is due to the unity of the functioning of the population of the city center and set the settlements included in its structure.
demonstrated for the existence of limiting the time required to travel in the daily time budget of the population should be regarded as "physiological threshold," the isolation of relatively self-contained functional-territorial unit, what should be a group system of settlements. Not only the city but also metropolitan area - functional and spatial basis of the formation of the group system in a number of studies is defined as education, "which holds" a certain number of people groups in the area, "closed" for the time spent on movement; as a territorial facility, featuring end a function and relationships, unity of the cycle life of the population.