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Changes in social relations in Ukraine, its transition to a post-industrial society, structural changes in regional development lead in modern conditions to changes in the territorial organization of society, which directly affects the trends of regional development. The highest form of territorial organization of society are agglomerations - uban agglomerations. Defining the boundaries of agglomerations is an important step in the process of studying agglomerations and managing regional development, because it is necessary to clearly understand the territory to which the administrative influence should extend and the number of city councils whose activities should be coordinated in implementing regional policy. The purpose of this work is to analyze the existing methods, approaches and techniques for determining the boundaries of agglomerations, development of an algorithm for establishing the boundaries of agglomerations and its testing on the materials of the Kharkiv region. The main theoretical and methodological starting points of delimitation of agglomeration boundaries are presented, approaches, methods and techniques, their quantitative and qualitative criteria, indicators, etc. are determined. The author 's algorithm for establishing agglomeration boundaries is substantiated, initial positions, key indicators, coefficients and indices are indicated. The proposed algorithm was tested on the materials of Kharkiv region. It is established that the Kharkiv agglomeration is monocentric and well formed. The development coefficient of the Kharkiv urban agglomeration is 30.7, the agglomeration coefficient is 0.13, the agglomeration index is 0.25, which confirms the high level of development of this agglomeration and the significant polarizing effect of the city of Kharkiv. The applied indicators of concentration and population density, transport accessibility, allowed to establish that the Kharkiv agglomeration has a powerful organizational center of development - the city of Kharkiv, the polarizing effect of which is more pronounced in two districts - Kharkiv and Dergachiv, which form the central zone of the agglomeration. The center of the agglomeration is connected with remote centers of peripheral areas by radial-radial connections by transport and other types of connections, which forms an external zone consisting of Bohodukhiv, Valkiv, Vovchansk, Zmiiv, Zolochiv, Novovodolazk, Pecheneg and Chuhuiv districts. Based on the study, based on the principle of superposition, the author's vision of delimitation of the Kharkiv agglomeration in 2019 is presented. The zone of influence of organizational functions of the center extends to a radius of 70 km, but there are significant territorial disparities in the center and periphery. The city of Kharkiv assumes most of the functions: administrative, economic, social, infrastructural and recreational, which to some extent hinders the development of small towns that are part of the agglomeration. The strengths of the Kharkiv agglomeration are indicated, as well as the priority directions of development are singled out. Given that the Kharkiv agglomeration is monocentric, and within it, as in the region there is a sharp uneven development of the center and periphery, effective management and addressing the hypertrophied development of the city, spatial planning and infrastructure development will alleviate this situation and facilitate the transition of the region. to the polycentric model of spatial organization, respectively, and the reduction of territorial disparities in the level and quality of life of the population of the Kharkiv region. [ABSTRACT FROM AUTHOR]

In the modern context of, one of the main tasks in the regional development management is to optimally realize the complex potential of the territories, which requires a comprehensive study of the spatial structure and evolutionary potential of agglomerations of all levels in order to identify disparities in their development, correct imbalances and optimize the spatial organization of the region. The first step to solve this problem is to identify the spatial structure and evaluate the interconnections of agglomerations sequentially, from local to regional level. This is becoming more relevant in the context of administrative and territorial reform in Ukraine. The purpose of this study is to analyze the prospects for the development of urban agglomerations and the organization of the administrative and territorial structure of Kharkiv region in view of the prevailing influence of the city of Kharkiv and the Kharkiv agglomeration. The basic theoretical and methodological starting points of the study of urban agglomerations are presented; their characteristics and parameters of boundary determination were defined. The essence of the method of modeling of integral influence function (IIF modeling) was revealed, the author's research methodology was substantiated. The tendencies of introduction of administrative and territorial reform in Ukraine were analyzed. It was established that Kharkiv region occupies mediocre places in terms of formation of the united territorial communities, there were 23 ones in the oblast (3 of them are city, 12 town, 8 rural ones) by the end of 2019. The scheme for dividing into enlarged districts has not yet been approved. According to different plans / proposals, the existing 27 districts of the oblast should be consolidated into nine, seven, six or four enlarged districts (counties). All of the above proposals were considered by the authors, it is established that the existing projects do not fully cover the main prevailing factors of allocation of competitive districts, do not take into account the role of historically formed system of settlement, spatial-statistical parameters, integral potential of territories, urbanization and agglomeration. The authors performed the IIF modeling and constructed the IIF surface of the weighted average settlement potential of Kharkiv region by the base radius of influence (2, 10, 20, and 30 km), which allowed to determine the features of the Kharkov agglomeration structure and the interaction of the settlements in the region by different radiuses of interaction, primary agglomerations, prospective growth points. On the basis of the obtained results of IIF modeling, the author's model of administrative and territorial division of Kharkiv region into eight enlarged districts was proposed, given the specific features of the settlement system and the correlation of area and population of the modeled administrative and territorial units. The scientifically grounded division of the region into enlarged districts (counties) and stimulation of their development will contribute to the most complete and rational use of the territories potential, increase of economic, human, investment potential, rise of the level and quality of life of the population, etc. [ABSTRACT FROM AUTHOR]