To modernize the administrative-territorial structure of Ukraine, more attention should be paid to the methodological questions of formation of the self-sufficient territorial communities. It is required to ensure a new synthesis of the purposes and indicators in managing not only the regions but also the territorial communities to ensure the tendency for reducing the level of entropy regarding making decisions, in the time of joining of township (village) councils, townships and small towns. Unfortunately, the main direction of administrative-territorial reform, which is today realized in Ukraine, is a pooling of financial resources of the township councils of the certain region's district, but not an actualization of the unified innovation policy, which will allow to receive a positive multiplier effect from the use of the economic potential of the united territory. So, the concentration of efforts on searching of possibilities for providing of a territorial community's capacity, predetermines the necessity: firstly, to determine a terminology regarding territorial community's capacity in the context of the new legislative acts; secondly, to develop an informational and analytical base of the quantitative rating of provision level of economical self-sufficiency of a territorial community in view of three groups: village (township) council, township, and small town as the basics of the capacity based on its resource potential, and thirdly, to improve the methodological developments regarding detection of its level.
REVIEW OF PREVIOUS STUDIES
The theory of self-development is highlighted in the works of Keating (2003) and Keating et al. (1996), where the diagnostics of European regionalism of our times through the territorial and social determinants has been implemented. In the context of self-development of a region, places the emphasis on the close correlation between economic growth and social factors, he introduces a concept of the social cluster as a separate formation on a region's territory, which satisfies in full the minimum needs of the population in social, educational, cultural and other domestic services (Rodriguez & Ezcurra, 2011). Theoretical and methodological principles of the regional self-development with a focus on the complete record of economical, social and territorial interests were studied in the works of the following scientists.
Analysis of foreign publications by this problematic certifies, that during consideration of the social and economical region's self-sufficiency, the scientists drew attention to the balance of resources and requirements of the social and economical system in investments (Oakley et al., 2015), a creation of conditions for its economical self-sufficiency (Bobakova, 2017), they proposed as a condition of self-sufficiency of the social and economical system construction of its relations with the central authorities on equal ground (Silva et al., 2018).
Using the theoretical provisions of the Ishikawa concept (Ishikawa, 1976) will determine the causal relationships of indicators of economic self-sufficiency of the territorial community. The construction of the Ishikawa (Fishbone Diagram) (Ishikawa, 1985 diagram) as an analytical tool allows to use for the research of the possible effects of the factors and the separation of the most important causes, the actions of which give rise to specific consequences and manageable.
Calculation of the generalized integral index of ensuring the economic self-sufficiency of the territorial community can be calculated on the basis of the index model. The method of the geometric mean is based on the determination of the coefficients by the individual indicators, when the highest value of this indicator is taken per unit (Tetiana et al., 2018a: 2018b: 2018c). The integral estimate is calculated using the formula of the geometric mean (Nakashydze & Gil'orme, 2015).
So, to determine the level of provision of economical self-sufficiency of a territorial community it is reasonably to apply the special indexes, based on the quantity specification of the different aspects of the inner potential of a territorial community and on the efficiency of its usage. Such approach allows: to provide the validity and methodological correctness of comparisons of economic self-sufficiency of the territorial communities of a certain region; to provide scientifically systematic calculations of these indexes in view of the certain territorial communities on the universal scale, which allows to execute methodologically rigorous comparisons as by the generalizing integral index of provision of economical self-sufficiency of a territorial community, as by the sectional or partial integral indexes of markers, which characterize its certain aspects.