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National economy digitalization is a powerful economic growth engine and one of the key areas for developing and maintaining the competitiveness of the state. Digital economy potential lies in accelerating the pace of economic development of enterprises, industries, regions and countries, and in improving in living standards. Under the conditions of digitalization, a tool for assessing the pace of economic system development at the country, region, industry and enterprise level becomes a source of competitive advantages. Therefore, the relevance of the study is evident. The purpose of the study is to develop tools for studying digital development rates at country and region level. The database of the study was represented by the proceeding of well-known foreign and Russian scientists and statistical data on the main indices of the US and Chinese stock markets. The methodological base was represented by the ISPI (Information System Portfolio Investor) digital model. The effectiveness of the obtained results was verified using the PRM (Profitability-Risk model) tool. The result of the study was an analysis of digital development rates at the country level by the case of the United States and China. The analysis was based on the calculation of the main parameters of the portfolio theory: expected return, risk level, return-to-risk ratio. Scatterplots were constructed for the main US and Chinese stock market indices based on the fitted data. They show the mutual distribution of groups of main indices and allow to determine the most promising areas for investment, including digital development. The findings confirm the possibility of using the proposed tools to determine the most attractive sectors for investment in the world stock markets and countries, and/or countries and regions that need investment for their development, including digital one. The introduction of the proposed tools into practice at the enterprise, industry, region and country level will contribute to the further development of the digitalization in all aspects of society at the enterprise, industry, region and country level.

Gazproms human capital (as HDI) is one of the most important resources of the corporation, which ensures its competitive strength in the Russian and international energy market. One of the main goals of PJSC Gazprom is the formation of a highly professional, responsible and cohesive team that effectively develops projects and solves a variety of tasks not only at the corporate level, but the country and the world. Therefore, the assessment of PJSC Gazprom staff readiness for the competition of the corporation in the domestic and external markets is relevant. Modeling the level of development of the enterprises human capital, based on the example of Gazprom corporation, according to certain indicators, determining their role in the development and competitiveness of the organization. To conduct the study, the works of scientists were analyzed, official data of the annual reports on the activities of PJSC Gazprom in the field of sustainable development for 2000-2018 were used. In order to assess the readiness of the corporation's human capital to sustainable development of the enterprise, a regression analysis and an econometric study were carried out using the MS Excel and Eviews10 application software packages. As a result of the study, it was found that a positive corporate human capital has a significant impact on competitiveness and an increase in the companys value and the constructed model for assessing companys human capital, based on the example of PJSC Gazprom, enables to make a forecast for the near future. Russia has occupied 49 place in the World Ranking (HDI = 0.824) in 2019 in terms of the level of development of the human capital according to the World Bank and has got into a very high level of development. Despite this fact, Russian HDI in World Ranking occupies only 46% against 70% of developed countries. World Bank experts claims, it will take Russia about 100 years to catch up with developed countries on this indicator. Russia does not have that kind of time, so the country has actively joined on every front. Obviously, the human capital of each corporation makes a certain contribution to changing the human capital of the country in one direction or another, and the human capital of PJSC Gazprom is able to significantly increase this indicator.