Entrepreneurship and Sustainability Issues is a peer-reviewed journal which publishes original research papers and case studies

A review of the current state of the theory and practice of bioenergy production from waste allowed us to identify the scientific and applied problem of substantiating the rational configuration of a modular anaerobic bioenergy system, taking into account the volume of organic waste generated in settlements. To solve this problem, this paper develops an approach and an algorithm for matching the configuration of a modular anaerobic bioenergy production system with the amount of organic waste generated in residential areas. Unlike the existing tools, this takes into account the peculiarities of residential areas, which is the basis for accurate forecasting of organic waste generation and, accordingly, determining the configuration of the bioenergy production system. In addition, for each of the scenarios, the anaerobic digestion process is modeled, which allows us to determine the functional indicators that underlie the determination of a rational configuration in terms of cost and environmental performance. Based on the use of the developed tools for the production conditions of the Golosko residential area, Lviv (Ukraine), possible scenarios for the installation of modular anaerobic bioenergy production systems are substantiated. It was found that the greatest annual benefits are obtained from the processing of mixed food and yard waste. The payback period of investments in modular anaerobic bioenergy production systems for given conditions of a residential area largely depends on their configuration and ranges from 3.3 to 8.4 years, which differ from each other by 2.5 times. This indicates that the developed toolkit is of practical value, as it allows the coordination of the rational configuration of modular anaerobic bioenergy production systems with real production conditions. In the future, it is recommended to use the proposed decision support system to model the use of biomass as an energy resource in residential areas, which ensures the determination of the rational configuration of a modular anaerobic bioenergy production system for given conditions.

The aim of the article is to substantiate the theoretical and methodological support for the formation and implementation of the content strategy of a construction company. The article considers the formation of content strategy, its place in the management of communications of the enterprise. The following methods were used in the course of the research: the method of statistical analysis (for the analysis of the tendency of the real estate market development of Ukraine); analysis, synthesis, logical and theoretical generalization – to specify the factors of supply and demand in the real estate market; graphical method, table method (to visualize the results of the study); method of calculating specific indicators of communicative activity (CPC (Cost Per Click), CPA (Cost Per Action), CTR (Click Through Rate)) for analysing trends in traffic to the company's website and identifying alternative sources of traffic. The specifics of developing a content strategy taking into account the peculiarities of the company's construction industry are shown. An analysis of trends in the real estate market of Ukraine is carried out based on official statistics. The dynamics of the volume of construction works is analysed, the housing price indices in Ukraine are determined and the factors of supply and demand in the real estate market are specified. The analysis of communicative efficiency of the web-system of the construction company is carried out, as a result of which, measures for improvement of management of its external communications by substantiation of variants of advancement on the Internet are developed. This is done by analysing trends in traffic to the company's website and identifying alternative sources of traffic. The developed measures will increase the efficiency of management of the construction company. The article proposed a procedure for analysing the web-system of a construction company based on attendance indicators and search activity, which allows identifying alternative sources of traffic and developing appropriate measures to manage communications of the enterprise in order to achieve their efficiency. The practical significance lies in the fact that the developed recommendations for the formation of the communication strategy of the construction company can be further used to intensify the promotion of the company's services in the real estate market and attract investment.

The functioning and development of enterprises largely depends on economic security, which consists of many functional components. The object of the study is the personnel security of the enterprise, and the paper itself is focused on identifying its factors that determine the level of labor safety. Analysis and assessment should become an important component of developing a labor safety strategy in the context of sustainable development. Currently, there are various methods that allow analyzing labor resources and their condition, but their use does not always make it possible to determine the level of sufficiency of characteristics; uncertainty arises that prevents a more objective assessment of situations. The study shows the problems of personnel security, considers and analyzes its components, and proposes an analysis method based on the fuzzy set method, which allows calculating the impact of each component with a greater degree of reliability. Using the fuzzy set method, an assessment of the personnel security of Joint Stock Company “National Nuclear Energy Generating Company “Energoatom” (JSC NNEGC Energoatom, Kyiv, Ukraine) for five years (2018–2022) was carried out, which made it possible to conduct a more objective analysis. Qualitative assessment of the impact of such indicators as average wages; frequency of injuries; level of saturation with specialists; level of professional training of employees; average age of employees; the share of young specialists is given. Starting from 2020, as the analysis showed, there has been a decrease in the level of personnel security indicator. The reason for the decrease in the level of personnel security of the enterprise was the decrease in the level of specialists in the total number of employees, especially young specialists, as well as the deterioration of the dynamics of employee training. The paper proposes measures to increase the level of personnel security of JSC NNEGC Energoatom.