The introduction presents the relevance of the research topic, defines the purpose and objectives of the research, subject, methods of research, scientific novelty and practical significance of the results of the study, approbation of the results of work, the number of publications relevant to the research and the structure and scope of work.
The work presents systematization of the material and initiates an actual urban development discourse in accordance with the priorities of this research. They can, basically, be divided into three groups: futuristic, which view formation transformation as a hypothesis, the final confirmation of which belongs to the future, but its probability follows from the abstract-logical scheme proposed by the authors; manifestational, which are affirmative and promotional by nature, and are often combined with propagation of certain technological and engineering solutions, most often from the field of communication and energy innovations; and reflexive ones, which are based on a critical analysis of already implemented transformations.
It also presents systematization of applied methods for investigating impulse factors, which triggered the development of a city. The work consists of five chapters. The first of these looks at the examples of spin-off urban development in historical retrospective and according to chronological order. The second represents a study of examples of spin-off development of urban fabric in modern (post-industrial) epoch. The third is the development of research techniques that would allow us to visualize the synthesis of general historical patterns of impulse development and those particular notable features that determine urban development of the post-industrial era. The fourth is theoretical generalization and conceptual arrangement of elements of practical experience of the author in the field of modeling of urban structure on the example of Lviv and a set of functional analogies associated with it. The fifth is analysis, systematization and differentiation of materials that make it possible to distinguish between positive and negative examples of the spin-off development of modern post-industrial urban fabric. In this context, there are two important aspects to be mentioned. The range of methods, which were used to obtain the results of work are specified here, namely: comparative analysis, the method of formational selection, structural-performative synthesis, formation-convergent synthesis, stage analysis, etc.
The phenomenon of rapid development of urban structure in a short period of time under the influence of certain factors has been considered. Four main universal factors of historical urban development, which can be viewed as impulse-based, with clearly expressed changes - infrastructural, demographic, economic, and myth-making, were substantiated. The inner content of each of these factors has been outlined and illustrated by relevant examples (Stockholm, Athens, Singapore, Jerusalem). In addition to the universal ones, a number of impulse factors that have formational nature and are determined by socially-economic specificity of certain historical epoch has been described. With reference to the range of cities, main features of the impulses in agricultural (Venice), industrial (Chicago), and post-industrial (Shanghai) epoch have been considered. Different factors have been formulated, which worked out to implement those impulses into practical urban development.
The phenomenon of poly-impulses, which stems from the uniquely large scale of the hyper-city of the post-industrial era, is considered. Such huge urban structures, imply more detailed analysis of dialectics of existence of many impulses within a single city. The difference between modern poly-impulse concept and the theory of polycentricity, which was characteristic of the modernist era, has been explained. Providing the examples of Great San Francisco and Los Angeles, elements of poly-impulse evolution of urban fabric have been considered. The concept of micro-oikumene, as a structural model of modern urban space, has been described, which allows us to talk about transformation of the administrative structure of a modernist city.
