This paper explores the elements of support and development of entrepreneurship in Ukraine. It suggests that digitalization is an important organizational component in the development of the business sector in the knowledge economy. The authors present a comprehensive study of the most advanced domestic business ecosystems (Diia, UNIT.CITY, Genesis) and highlight their key characteristics, i.e., type of ownership, structure, mission and vision, services for entrepreneurs, investment fund availability, and areas and types of investment. The paper concludes that support for entrepreneurship in Ukraine is based on the principles of efficiency, accessibility, social security, openness, and transparency. Entrepreneurship support is considered as a set of measures of the state-funded and private institutions and organizations aimed at ensuring the sustainable functioning of small and medium-sized business entities and stimulating their development by creating the following favorable conditions: building a competitive environment and increasing competitiveness; fostering investment and innovation efforts; promoting manufactured goods (works, services) or knowledge-based products in domestic and foreign markets; ensuring employment by supporting the citizens’ entrepreneurial initiatives. Areas of public and private support of domestic entrepreneurship include provision of information, consultancy, and special services. Moreover, the paper pays special attention to the forms and methods of supporting businesses and entrepreneurship under martial law in Ukraine in 2022.

Green human resource management means taking action and shaping and promoting pro-ecological attitudes in the working environment. The purpose of this study is to investigate the role of green Human Resource Management (HRM) and green corporate policies in environmental sustainability. Research in this area was carried out among 346 employees employed in enterprises from various industries in Poland in 2021. An online questionnaire was used in the study. The obtained results were subjected to statistical analysis; a logistic regression model was applied using the Statistica computer package. The conducted research showed that the employees' awareness of green competencies and the employer's activities in environmental training and education are statistically significant. Still, employers should emphasise the environmental education of employed staff in conjunction with their job position.

Employment and the competencies of employees in the energy sector are coming into particular prominence in economies around the world. It is one of the few sectors positively affected by the COVID-19 pandemic. As a result, a significant global change in the awareness of society occurred in favor of increasing pro-health and pro-environmental activities, which can be seen in the green transformation. Poland can also boast such changes in recent years, as evidenced by the dynamic development of renewable energy sources (boom for photovoltaics) and the increase in prosumption. Correlated with this is the increase in demand for employees with specific competencies, the so-called multi-competencies that are a compilation of technical, business, and soft and hard competencies, as well as interdisciplinary ones. The paper emphasizes the need to better adjust the education system to the real needs of the labor market in a turbulent environment with the use of the Sectoral Qualifications Framework in Energy, developed in cooperation with stakeholders from the industry. Therefore, the authors analyzed the employment structure in the energy sector in Poland, with particular emphasis on the factors and conditions of this structure and made an attempt to identify and create a competency profile of employees in this area. For the purposes of this article, two key research problems were formulated: What are the key competencies of employees in the energy sector? How is employment changing in this area? The following research hypothesis was also put forward: The transformation of the energy sector towards green energy affects the increase in employment in this area and the increase in the demand for soft competencies. The analysis was based on statistical data, reports, job advertisements, and a review of the results of empirical research to date.

Convective drying is the most common drying method, and mathematical modelling of the dewatering process is an essential part of it, playing an important role in the development and optimization of drying devices. Modelling of the leek drying process can be difficult as the specific structure of this vegetable, in which the slices of leek are delaminated into uneven single rings at different times during drying and the material surface changes more than in other vegetables. This study aimed at proposing a theoretical model for leek convective drying, based on the theoretical laws of heat and mass exchange, which should take into account the observed random process disturbances in the form of random coefficients of this model. The paper presents a non-linear model of water content changes with a random coefficient n. Values of the coefficient n, which were considered to be a random variable, were obtained using the Monte Carlo method, using the inversed distribution function as a probabilistic method. The non-linear model of water content changes when a random n coefficient gives a good approximation of the measurements of water content changes to approximately 1–2 kg H₂O/kg d.m.

All activities concerning the development of dispersed generation and prosumer energy are a significant component of sustainable development of rural areas. Wise and effective use of energy should be conducive to the social and economic boost in those areas, as well as an improvement in environmental benefits and the quality of life of their residents. Investments in renewable energy mean a decrease in the negative impact upon the environment (degradation of soil and landscape, pollution emission, generation of waste). A research analysis was conducted, based on the results of the survey research done in April 2014 among agricultural and environmental advisors from Pomorskie and Kujawsko-Pomorskie Provinces. According to the surveyed, both the conditions of the energy infrastructure and the level of energy supply in the country are low. Although the increase in participation of RES in Poland is lower than in the EU, it does bring vast possibilities for the protection of environmental benefits of rural areas. Działania dotyczące rozwoju energetyki rozproszonej i prosumenckiej stanowią znaczący element zrównoważonego rozwoju obszarów wiejskich. Mądre i efektywne wykorzystywanie energii winno się bowiem opierać na zasadach zrównoważonego rozwoju i sprzyjać rozkwitowi społeczno-gospodarczemu tych terenów, a także poprawie walorów środowiskowych i jakości życia mieszkańców. Inwestycje w energetykę odnawialną wiążą się z obniżeniem ujemnego wpływu na środowisko (degradacji gleb i krajobrazu, emisji zanieczyszczeń, powstawania odpadów). Analizę badawczą dokonano na podstawie wyników badań ankietowych, które zostały przeprowadzone w kwietniu 2014 roku wśród doradców rolnych i rolno środowiskowych z województw kujawsko-pomorskiego i pomorskiego. W opinii badanych, zarówno stan infrastruktury energetycznej, jak i poziom usług energetycznych na wsi jest niski. Chociaż wzrost udziału energii z OZE w Polsce jest niższy, niż w UE, to jednak niesie ze sobą ogromne możliwości dla ochrony środowiskowych walorów obszarów wiejskich.