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During 2009–2011, 50 points of the Daube River Basin were surveyed. In 23 of them, seven species of Unionidae were recorded: U. pictorum, U. tumidus, U. crassus sensu lato, A. anatina, A. cygnea, P. сomplanatа and S. woodiana, which is an invasive species. Th e index of occurrence of freshwater mussels in general was 100 % in the Lower Danube River (5 study areas), 42 % in Tisa River (31 study areas), 33.3 % in Seret River (3 study areas), 36 % in Prut River (11 study areas). Th e index of occurrence of species was rather low: 24 % of A. anatina, 22 % of U. tumidus, 22 % of U. crassus, 16 % of U. pictorum, 14 % of P. complanata, 14 % of S. woodiana, and 2 % of A. cygnea. U. crassus was not found in the Lower Danube river, while A. cygnea was found only there outside the main watercourse. Th e invasive species S. woodiana occurred in the Lower Danube River and in the sub-basin of Tisa River (with 83 % and 20 % frequency, respectively. Th e mean values of population densities ranged from 1.00 (A. cygnea) to 6.14 ind./m2 (S. woodiana), and the mean biomass varied from 1.14 (P. сomplanatа) to 797.54 g/m2 (S. woodiana).

The results of investigation of influence of different soil processing methods on weed infestation of crops and their influence on agricultural crop efficiency in the conditions of the Orel region are examined. The analysis and estimation of agricultural crop infestation including different quantitative characters: rating system, weed plant phytomass, projective cover in comparison with projective cover of cultivated plants, specific number of weed plants and their influence on agricultural crop efficiency are carried out. The influence of different seeds variants and modern basic soil cultivation on weed infestation of crops, utilization of foreign seeding complex John Deere 730 and national seeding machine SZ-5,4 is shown.

The article is devoted to main theoretical and practical questions concerning “green” investments in logistics infrastructure objects. This type of investments has certain peculiarities as it deals with the sphere which is related to any kind of business and human’s activity. Logistic infrastructure forms mobility. But no significant change in a separate facility will not give a significant result without a support to the relevant network and the highest intellectual level of its use. Planning of logistic infrastructure should be performed in such way that the positive effect on economic growth was maximal, and the negative impact on the environment is minimal. Thant’s why improving logistics infrastructure facilitates achieving sustainable goals as it works simultaneously for economic, environmental and social development. Thus it is extremely important to implement such tool from “green” economy concept as “green” investments towards logistics infrastructure objects. There were analyzed different theoretical approaches to the definition of “green” investments in the paper. The result of deep research of worlds’ best practical trends for “green” investing in logistics infrastructure objects is provided. There studied separately mentioned tendencies for all subtypes of hard logistics infrastructure: transport (electrification of vehicles, low-carbon transport systems, sustainable fuels), warehouse (automation, distribution centers decentralization, energy-efficient equipment and construction), packaging (suitable for processing packaging materials, moving from plastic to more environmental types of packaging), information infrastructure (energy-efficient servers, cloud computing, reducing the number of toxic materials and water required for the production of electronic devices), customs (The Green Customs Initiative), social (smart containers, automated food waste tracking systems and automated technologies of optical scanning). Also were studied main instruments to attract necessary finance support for “green” investments and analyzed ways how to implement them in Ukrainian market with its peculiarities.

By the implementing an enterprise development program, the existing key competence of the organization may undergo significant changes. Also introducing innovations, you can get not only benefits, but additional problems and even risks. It should be noted that an organization may have more than one key competence, especially when we deal with changes in the management structure or entering new markets. For this class of tasks, the classical linear optimization problem does not fit, since it does not take into account the additional conditions that arise when an organization transitions from one state to another, precisely due to the implementation of the development program. Therefore, to solve this problem, we need a dual problem. The subject of research in this article is the process of introducing key competence, as the main component of the management of innovative projects in the organization. Objective: to develop a tool for introducing key competence into an organization’s work by solving a dual linear optimization problem. Tasks: to analyze the factors influencing the results and the possibility of introducing key competence in the organization’s activities, to obtain a general algorithm for the transition from direct to dual competence. Research methods: logical generalization, analysis and synthesis, structural analysis. Results: The article considers the key competence of the enterprise as the main component of the management of innovative projects, which the company implements. Shown her place and the role that she plays. A project description model has been developed, which describes processes that take into account the impact of the production and economic system on project implementation. The article proposes a general algorithm for constructing pairs of dual linear optimization problems. The existing schemes of transition from a direct problem to a dual one are meaningful. Considering this fact, a generalized algorithm for generating pairs of related problems has been proposed and strictly proved. Formalization of the developed scheme makes it easy to get the correct pairs of dual problems. It is shown that the analysis of the key competence of the enterprise makes it possible to offer a new base for the formation of a strategic plan, the implementation of which will lead to the emergence (support) of a sustainable competitive advantage, as well as assess its potential in terms of financial plan and capabilities of the enterprise or business system as a whole. Conclusions: The tools for analysis and implementation of key competence in the organization’s activities have been developed. The results obtained in during the study allow us to state that a new base has been proposed for the formation of a strategic plan for the development of an enterprise, the use of this base will lead to a sustainable competitive advantage, which will become possible when implementing key competences in the process of changing the management structure. Taking into account that an organization can have more than one key competence, the second competence is dual to the original, that allows a general transition from direct to dual competence.

The uneven load of the electric drive of sucker-rod pumping units causes an increase in the consumption of reactive power, which requires compensation. This article discusses the issue of calculating the processes in sucker-rod pumping units in the case of individual compensation of the reactive power. Mathematical models for calculating the process of changing the capacity of cosine capacitors for reactive power compensation in the starting and steady-state modes of the electric drive of the sucker-rod pumping unit, which are characterized by the periodically varying load and moment of inertia, have been developed. The calculation is based on a mathematical model of the induction motor that takes into account the saturation of the magnetic path and the skin effect in the bars of the deep-bar rotor. The created mathematical model can be used to regulate the capacitance of the capacitors connected to the induction motor in order to reduce the reactive power consumption.

The paper considers the transformation of human resource management processes in the healthcare settings of Ukraine in the context of war and the COVID-19 pandemic. It is noted that the unstable and hostile environment of a healthcare setting during times of crisis leads to the need to change the personnel selection and team formation model to increase the adaptability and resilience of human resources involved in the provision of medical care. The key features of the human resource management process in a turbulent environment are the high migration activity of personnel, which leads to the need to reallocate resources, the need to operate under severe financial constraints, and the need to consider personnel as a non-renewable resource when it is impossible to attract additional resources. To ensure the reliability of the functioning of a medical institution, the transformation of human resource management processes should be based on strategic agility and human resource management, organizational resilience as a resource-based capability, corporate sustainability, and transformation of enterprises’ resources, which can be achieved by applying methodological support for resource management in a multi-project environment. Considering a network of medical institutions as a multi-project environment will allow using the methodology of project-oriented resource management, forming adaptive teams in a multi-project environment, to ensure flexible redistribution of resources both within a single institution and within a network of institutions. It is proposed to use formal transformations to manage a medical institution’s human resources. Applying the proposed approach for managing the human resources of a medical institution is considered. The formation of a project team that satisfies the minimum requirements with the maximum value of the team’s qualification score is considered. It is shown that the use of this methodological support made it possible to choose the composition of the project team with a minimum number and a maximum value of the characteristic.

This paper focuses on the visualization of eco problems and the latest green technologies, including energy-saving. Today, there are four color-graphic means in advertising: photography, graphics (drawing or computer graphics), font compositions, and often a combination of these. Our study considers the imagery and stylistics of eco poster as a type of public advertising, and ascertains that in the subject of energy-saving a light bulb as the visual stereotype prevails. The paper indicates the importance of system design thinking, the use of creative approaches in the educational process of designers (metaphor, metonymy, hyperbole, association, allegory also) in creating social appeals for a wide audience – from young children to the older generation. Moreover, it emphasized the social value of design, and the aesthetic, moral as well as communicative aspects of visual information of environmental orientation within the context of this study.