Operation Of Complex Systems Research Articles

Integration of BPMN Modeling and Multi-actor AHP-aided Evaluation to Improve Port Rail Operations

Selecting the best scenario of intervention to improve the functioning of complex systems represents a troublesome task both for public and private decision makers, since it requires the deployment of appropriate analysis and evaluation tools. In the case of intermodal transport systems, complexity is given by the execution of different types of activities using various resources, and by the presence of several actors operating in the same environment with diverse goals. In this paper, an integrated approach to assess design alternatives regarding rail port operations is proposed by combining business process modeling and multi-actor multi-criteria evaluation. In fact, a railway process has been graphically represented by means of the standardized modeling language called Business Process Modeling and Notation (BPMN) at different levels of detail, i.e. taking into account not only the actual transport operations but also the necessary documentary procedures to perform the freight transfer services. In addition to the identification of possible bottlenecks, the analysis of the considered railway process has enabled the determination of its most significant features. These parameters have been subsequently used as some of the criteria according to which the performances of the examined scenarios of intervention have been evaluated, adopting the Analytic Hierarchy Process (AHP) technique. Furthermore, the appraisal has been enhanced by explicitly including the key stakeholders involved in the railway process at hand. The developed methodology has been applied to the case study of the Port of Trieste, Italy, in order to investigate possibilities for an increase in railway capacity.

Результативність функціонування та розвитку систем: оновлені підходи до дефініцій SEE-управління

The article covers the issue of SEE-governance as a means of improving the effectiveness of the processes of functioning of complex systems in the context of «quantity/ quality» definitions. SEE-governance is carried out on the basis of measurement and evaluation of the components of the above-mentioned effectiveness, indicating possible regulatory actions to change the effectiveness of the functioning and development of systems. It is underlined that a special interest among scholars is caused not only by the problems of system development, but also by the states that determine the order of functioning of systems, known as attractors. The article is aimed at disclosing the role and significance of attractors as a basis for the formation of synergistic potential of SEE-governance for the further development of systems, as well as supplementing on this basis the methodology of the mentioned governance on the basis of the authors’ components of effectiveness by understanding of increments and decrements in the context of the «quantity/ quality» paradigm in the «growth/development» narrative – to clarify the algorithms of actions in the process of system management that seeks to develop dynamically. It is noted that the complex of the authors’ indicators of the components of effectiveness of the functioning and development of system in practice allows to form approaches to the assessment of the system states in terms of the above-mentioned effectiveness. This makes it possible to understand what adjustments and at what time of the system functioning should be made so that it operates and develops effectively. It is concluded that resultative, effective processes can serve as attractors capable of directing the development of the system in the right direction when a system is at the point of bifurcation.

Formation of the model of the open production-and-economic system at the construction enterprise

The research is dedicated to the multi-structural model of the complex system at the construction enterprise as well as the model of structurally functional open production-and-economic system at the construction enterprise. The models are created for the acceptance of the justified managerial decisions and carrying out the applied research aimed at the efficiency of the construction enterprises functioning in the conditions of uncertainty, instability of the internal and external environment and heterogeneity of the indicators, which characterize the enterprise’s activity. The offered models are developed on the basis of the probability theory and the information theory; they are based on the principles of self-organization, openness of the complex systems, synergy and information-and-statistical approach. The concept of the open productive-and-economic system at the construction enterprise is considered, the content of the functions of the complex system at the construction enterprise is described, their stochastic and quasi-determined communications in the uniform information-and-statistical field of functioning are presented. Bit measurement for the whole set of functions, allowing to receive an adequate assessment of the complex open system behavior, is offered for further scientific and applied research, including the development of more exact forecasts and improvement of statistical heterogeneity of indicators.

О ФОРМИРОВАНИИ ИНФОРМАЦИОННО-КИБЕРНЕТИЧЕСКОГО МЫШЛЕНИЯ У СТУДЕНТОВ ПЕДАГОГИЧЕСКИХ ВУЗОВ

The article deals with the actual problem of the development of information-cybernetic thinking among students of pedagogical specialties. As a result: 1) the content of the “information-cybernetic thinking” concept is defined and the necessity of its use while studying computer science and cybernetics is justified; 2) the methodical system for the formation of informationcybernetic thinking is proposed, containing target, content, procedural and diagnostic components; 3) various types of educational tasks that help to form information-cybernetic thinking are considered. It is shown that information-cybernetic thinking involves: 1) the ability to apply the information-cybernetic approach to study the complex systems operation; 2) algorithmic thinking, that is, the ability to create an algorithms and to program a computer, the ability to interact with information and cybernetic systems in order to solve practical problems.

Nature-like mining technology as a potentially monumental resolution of environmental contradictions during the development of solid mineral deposits

The antagonistic contradiction between the biological essence of man and the abiological ways in which he obtains energy from the Sun for the creation of a food base and personal habitat is the determining factor shaping the image of our technocratic civilization. In order to address this contradiction in the development of the mineral and raw materials complex, it is necessary that the requirements for environmental security not be imposed on individual operations or processes but form the basis of a promising technological paradigm. In this way, the conservation of the Earth’s natural biota becomes a requirement and an inherent feature of the technologies created and applied. It seems abundantly clear that from a methodological point of view, technological responses to environmental challenges should be sought in the study of systems where these answers have already been obtained. Namely, these answers present themselves in biological systems taking form in nature-like technologies. Recent changes in public consciousness have inevitably led to the greener thinking in all spheres of human activity. The most illustrative ref lection of this phenomenon is the growing interest in nature-like technologies, which are associated with the main aspirations in the settling of a global environmental crisis generated by a long-term antagonistic confrontation between the technosphere and the bio- sphere. In considering the concept of nature-like technologies as a designation of the principal trend in the modernization of the general technological paradigm, it is necessary to distinguish two specific areas. Depending on whether or not the technologies that we use are present or absent in wildlife, we must first consider the construction of technologies by duplicating effective processes already observed in wildlife in the technosphere (nature-reproducing technologies) and, secondly, the creation of technological systems by transferring the effective functional structure of the circulation of matter and energy in biological systems to the technosphere (convergent technologies). The general theory of the creation of “similar to nature“ technologies is presented, based on the well-known principles of homeostatics - methods of maintaining the vital parameters of the interaction of natural and technical systems by controlling the contradictions between antagonists. The main directions of the structural and functional convergence of technical and biological sciences are identified when updating the technological paradigm of industrial development, based on the reproduction in the technosphere of systemic solutions that ensure the functioning of complex biological systems. Regarding the ecologization of the technological paradigm of the mineral resource complex, the methodology of creating an ecologically balanced technology as a multiobject cluster is based on the well-known principles of homeostatics, i.e., on the phased formation of a technological homeostat on the basis of the structure of a biological homeostat with the replacement of its essential elements with geotechnological target analogues. The result of this transformation is the construction of a convergent mining technology for integrated field development. Its use will ensure the development of technical systems that make it possible to limit external environmental impacts owing to the postexploitation self-restoration of natural biota phytocoenoses. The study was supported by the Russian Science Foundation, Project No. 19-17-00034.

АНАЛІЗ ІСНУЮЧИХ ПІДХОДІВ ЩОДО ОЦІНЮВАННЯ ФУНКЦІОНАЛЬНОЇ СТІЙКОСТІ ГЕТЕРОГЕННИХ ІНФОРМАЦІЙНИХ СИСТЕМ ВІЙСЬКОВОГО ПРИЗНАЧЕННЯ

The article provides a comparative analysis of approaches, methods and formalized mathematical descriptions used to assess the functional stability of heterogeneous information systems. Features and criteria of functional stability are considered. The definitions of the concepts of functional stability, heterogeneous information systems, indicator and criterion of functional stability are given. The difference between the concepts of stability of functioning and functional stability of complex technical systems is indicated. Formalized descriptions of the structural and probabilistic criteria for the functional stability of the structure of a heterogeneous information system are given. The mathematical formalization of the functional stability indicator for structures with serial and parallel connection of elements is given. The indicator of the structural complexity of the data transmission system of the automated air traffic control system is mathematically formalized. The article presents a method for assessing the functional stability of an automated air traffic control system and a method for calculating a generalized probabilistic indicator of functional stability as a convolution of the structure connectivity matrix. The directions of further research on the assessment of the functional stability of heterogeneous information systems are determined.

Achievement in Science and Attitude towards Science Practical among Secondary School Students of Patna

Practical work is defined as any science teaching and learning activity that involves students, working individually or in small groups, manipulating, and/or observing real objects and materials instead of the virtual world. The teaching of science offers students the ability to access a wealth of knowledge and information, which will contribute to an overall understanding of how and why things work as they do. Science can explain the mechanics and reasons behind the daily functioning of complex systems, ranging from the human body to sophisticated modern methods of transport. Children and students can use this knowledge to understand new concepts, make well-informed decisions, and pursue new interests. Thus, there is a compulsory role of science practicals in science teaching, and it is always important to study its implications on the students’ science achievement. The study here has investigated this and found out if there is any relationship between science achievement and attitude towards science practicals. The study has been conducted on 120 students administering the standardized test on attitude towards science practicals. This study used a 30-item science attitude scale adapted from Prokop et al. (2007). The findings showed that the differences existed in science achievement based on gender and location of the schools. In contrast, in terms of attitude towards science practicals, the difference only existed based on the schools’ area of location. It was also found that there existed a significant relationship between achievement in science and attitude towards science practical among secondary school students of Patna.

System Modelling of the Cereal Grading System in Tunisia

After a presentation of the cereal activities in Tunisia, we present, according to a systemic analysis approach, the cereal grading system. A model describing the functioning of complex system was established and has allowed identifying the information that ruled it. An information matrix is defined and elaborated, it enables on the one hand to identify the produced and consumed information concerning each activity and on the other hand to determine the relations between the activities.

하이브리드 모델링 기법과 베이지안 최적화를 통한 엔진 마운트 응답개선

This paper presents a method for predicting and improving the response of the engine mount using hybrid modeling technique and Bayesian optimization. The hybrid modeling technique based on the FRF based substructuring (FBS) theory can improve the accuracy of results and reduce the required time and cost compared to full-FE analysis using both experimental and finite element results. Using FBS theory, a transfer function of complex system can be changed to transfer function of several simple substructures. At this time, the hybrid modeling technique replaces the transfer function of a specific substructure with the result of FE analysis. Using this method, it is possible to predict the effect of the design change in the entire system by changing the CAD model design for the substructure applied to FE analysis. Furthermore, an optimal design is proposed by applying the Bayesian optimization technique.

IMPROVEMENT OF THE ENTERPRISE MANAGEMENT SYSTEM BASED ON MODERN PRINCIPLES OF BUILDING BUSINESS PROCESSES, CONTROLLING AND RISK MANAGEMENT

The objective of the article is to highlight and consider the main directions for improving the modern enterprise management system, since that in the modern market conditions, the issue of effective development for industrial enterprises becomes more relevant, while the fundamental bearing core of the enterprise's internal environment is the management efficiency. The main problem is the managerial inefficiency of an excessively large structure that is not well suited to the work in market conditions. Methodology. In the course of this analysis, the management system of an industrial enterprise was considered as a complex open system with the use of the system analysis methodology in the study, which made it possible to identify the main directions for its improvement. Results. Enterprise management is a continuous process of influencing the performance of an employee, group or enterprise as a whole for the best results in terms of achieving the goal, which has been set. The management process is provided by the trained management professionals who shape and manage the organization by setting goals and developing ways to achieve them. To do this, management must find an effective way to combine the key variables that characterize tasks and people, while taking into account the obvious and potential external and internal risks and threats. Setting goals and providing them with policies, strategies, procedures and rules, the necessary management mechanisms contribute to the solution of this task. Motivation and control also play a significant role in ensuring that the tasks are completed effectively. However, the key in this is precisely management, which is most obvious and directly related to the systematic coordination of tasks and, accordingly, the formal relationships of people performing them, and the correctly selected management process toolkit allows the enterprise to achieve the greatest efficiency. Practical implications. The performed analysis of the features of the functioning of the enterprise management system allows us to determine the following areas for improving the modern enterprise management system: improving the business processes of the enterprise, ensuring high-quality control in the enterprise management system, and introducing the enterprise risk-management. Value/originality. The use of system analysis made it possible to determine and substantiate the main directions of improving the modern enterprise management system.

Design for Relations

The city, composed of heterogeneous relations, is an open complex system, beyond its physicality. Questioning analysis and design, a work-in-progress methodology of a generative mapping negotiating different kinds of design logics is presented. The methodology is composed of (1) data gathering; (2) investigating relations among data; and (3) testing with two cases elicited from Athens Center public space. The focus is on how such a relational-thinking methodology cultivates design logics through design­ing by analyzing; designing by defining frame(s); designing the program; designing as an interventional strategy in/through interdependencies; designing by intervening with territorial forces; and employing intra-parametric strategies. By enforcing emergence and management of complexities in diverse fields of potential application, the methodology negotiates the limits and the ways of design.
 
 
 Keywords:
 Systemic urban design, relational design, relational territorialities, relationally generated complexity; design methodology; open method; diagrammatic mapping

Smartphone-Based Automated Non-Destructive Testing Devices

Currently, non-destructive testing is an interdisciplinary field of science and technology that serves to ensure the safe functioning of complex technical systems in the face of multifactorial risks. In this regard, there is a need to consider new information technologies based on intellectual perception, recognition technology, and general network integration. The purpose of this work was to develop an ultrasonic flaw detector, which uses a smartphone to process the test results, as well as transfer them directly to an powerful information processing center, or to a cloud storage to share operational information with specialists from anywhere in the world.The proposed flaw detector consists of a sensor unit and a smartphone. The exchange of information between the sensor and the smartphone takes place using wireless networks that use "bluetooth" technology. To ensure the operation of the smartphone in the ultrasonic flaw detector mode, the smartphone has software installed that runs in the Android operating system and implements the proposed algorithm of the device, and can serve as a repeater for processing data over a considerable distance (up to hundreds and thousands of kilometers) if it necessary.The experimental data comparative analysis of the developed device with the Einstein-II flaw detector from Modsonic (India) and the TS-2028H+ flaw detector from Tru-Test (New Zealand) showed that the proposed device is not inferior to them in terms of such characteristics as the range of measured thicknesses, the relative error in determining the depth defect and the object thickness. When measuring small thicknesses from 5 to 10 mm, the proposed device even surpasses them, providing a relative measurement error of the order of 1 %, while analogues give this error within 2–3 %.

ПРОГНОЗИРОВАНИЕ ПОКАЗАТЕЛЕЙ РАБОТЫ ТРАНСПОРТНОЙ СИСТЕМЫ

The article is devoted to the development of a methodology for predicting the performance of the transport system using mathematical models that can be used to effectively analyze and predict the functioning of complex systems. Key words: transport system, fleet, ships, analysis, forecasting, mathematical models.

Methodology for ranking controllable parameters to enhance operation of a steam generator with a combined Artificial Neural Network and Design of Experiments approach

The operation of complex systems can drift away from the initial design conditions, due to environmental conditions, equipment wear or specific restrictions. Steam generators are complex equipment and their proper operation relies on the identification of their most relevant parameters. An approach to rank the operational parameters of a subcritical steam generator of an actual 360 MW power plant is presented. An Artificial Neural Network - ANN delivers a model to estimate the steam generator efficiency, electric power generation and flue gas outlet temperature as a function of seven input parameters. The ANN is trained with a two-year long database, with training errors of 0.2015 and 0.2741 (mean absolute and square error) and validation errors of 0.32% and 2.350 (mean percent and square error). That ANN model is explored by means of a combination of situations proposed by a Design of Experiment - DoE approach. All seven controlled parameters showed to be relevant to express both steam generator efficiency and electric power generation, while primary air flow rate and speed of the dynamic classifier can be neglected to calculate flue gas temperature as they are not statistically significant. DoE also shows the prominence of the primary air pressure in respect to the steam generator efficiency, electric power generation and the coal mass flow rate for the calculation of the flue gas outlet temperature. The ANN and DoE combined methodology shows to be promising to enhance complex system efficiency and helpful whenever a biased behavior must be brought back to stable operation.

Sustainability, as a Source of Environmental Law

The latest research has approached the ecosystem's carrying capacity, an issue that both the specialists in demography and the specialists in human ecology inquired about, to be able to estimate based on scientific grounds the limits of natural development and of demographic growth. The carrying capacity is a characteristic feature of every ecological system or category of ecosystems, depending on their development stages and the hierarchic stage they are part of. Consequently, the carrying capacity is the concrete expression of the stability domain expressing the ecosystem's ability to modify its structural and functional parameters under the influence of the command factors. The stability domain of an ecosystem designates the direction in which it is developing, with the mention that the process is taking place on very large time scales, of over 100 years and is reversible, each time a strong impact from external factors is exerted on the system. It results, in this context, that the notion of “carrying capacity” actually points to the capacity of functioning of large, complex and dynamic systems, as ecological systems are.

Dependability from a designer’s standpoint

The Aim of the paper is to let the reader look at dependability through the eyes of a designer who is to develop an entity with specified dependability requirements. The result of such work is not yet dependability as a property, but the ability proper to a structure, without which the required dependability cannot manifest itself. Designing highly dependable entities requires the use of formalized practices with specific operating procedures, that, on the one hand, do not contradict the provisions of the dependability theory, while, on the other hand, are to be useful, clear and easy-to-understand by any designer in order to ensure the required dependability. Methods . The paper examines the primary approaches that allow a designer, without violating the existing notions and terminology of dependability, solving problems of technical object dependability in the course of design and development based on engineering disciplines and design methods intended to ensure the dependability of products, starting with the very early life cycle stages. If such approaches to dependability research are employed, preventing failures only requires the application of the principles of physicality (causal connections) and physical necessity (consistency with the laws of nature) of the causes of failures. Results . The paper sets forth simple mathematical models that helped create a generalized parametric model of complex technical systems operation. Based on the cited models, it can be concluded that dependability calculation in terms of the known dependability indicators of components and elements can be replaced with dependability estimation in terms of the probability of performance by the components and elements of the required functions. This conclusion not only does not contradict the provisions of the dependability theory, but makes dependability an effective tool helping the designer ensure the specified dependability. The generalized parametric model of operation is solved using the method of design and process dependability analysis developed for the purpose of analyzing and assessing design solutions as part of high-dependability item design. Conclusion . The concepts, approaches, models and methods suggested in the paper allow the designer to take dependability as operability expanded in time. Such dependability is always specific and takes into consideration all the distinctive features of an entity. In this case, the process of design and assurance of dependability becomes an integral part of the entity creation activities regardless of uniqueness, series production, availability of dependability indicators of components and elements. But most importantly, such approach to dependability, on the one hand, does not contradict the foundations of the modern dependability theory, and, on the other hand, relieves the designer of the impression that dependability is something foreign, not associated with the real design.

REFORMATION OF CUSTOMS SERVICE OF UKRAINE TO ACHIEVE THE GOALS OF SUSTAINABLE DEVELOPMENT

The objective of the article is a systemic analysis of the approaches to reformation of the customs sphere, determination of the role of customs service in the process of ensuring a sustainable development under the present-day conditions. Eurointegration strategy of Ukraine necessitates the need for reformation of the national customs system in order to conform to the standards of the World Customs Organization and the perspective adaptation to the European requirements, elaboration of the development strategy with the purpose of integration with the developed countries of the world, harmonization of economic trade and ecological processes. Methodology. In the course of this analysis the customs service was considered as a complex open system with application in the research of the methodology of systemic analysis, which allowed to put emphasis on separate aspects of the specific character of its functioning. Results. In any country, customs service is an integral part of the system of state administration of the foreign economic activity, one of the important state institutes of social and economic processes administration. It ensures the balance of interests of all participants of international trade enshrined in the current conventions and agreements on the level of the international law. Modernization of the national customs system under the conditions of the European integration processes has to become an important mechanism of social and economic development and international collaboration of Ukraine. Under the present-day conditions customs service plays an important role in the achievement of goals established by the UN in the sphere of sustainable development till 2030. Some of these goals are directly connected with the strategic mission of the customs service and that is why it is important to ensure appropriate conditions for functioning of the customs service for the successful accomplishment of the tasks of sustainable development in the social, economic and ecological spheres. The key priorities of activities of the national customs system must ensure accomplishment of the main tasks of the customs authorities in the context of achieving the goals of sustainable development formulated by the World Customs Organization: formation of the favorable, safe, just and sustainable business environment for economic growth, ensuring social justice, facilitation of improving stability of the global, national and regional ecological systems and combating the climate changes. Practical implications. The performed analysis of particularities of the customs system functioning and its objectives allows to determine the role of the customs service in the achievement of the Goals of sustainable development till 2030, to highlight the key priorities in resolving the environmental problems, to form the potential of sustainable development. For Ukraine these are modernization of national society and minimization of consequences of existence of the corruption schemes. Value/originality. The use of the systemic analysis allows to detect the main problems in functioning of the customs service taking into consideration the specific character of its functioning under the present-day conditions.

ANALYSIS OF THE FACTORS THAT DETERMINE THE FEATURES OF THE ORGANIZATION OF PUBLIC-PRIVATE PARTNERSHIP IN THE INNOVATION ACTIVITY OF UKRAINE

The objective of the article is to clarify the nature and benefits of public-private partnership and analysis of factors influencing its organization and dissemination in innovation. The usefulness of introducing public-private partnership in the innovation sphere is due to the possibility of combining state regulation of innovation development with the potential of private business, which should be considered as a carrier of managerial, human, and financial capital. Society is interested in the organization of public-private partnership in innovation because the result of achieving its strategic goal would solve several socially important problems, which include employment growth, increasing real incomes, spreading innovation, and accelerating socioeconomic progress. Methodology. During the analysis, public-private partnership was considered as a complex open system with the use of systematic analysis methodology in the study, which allowed to emphasize certain aspects of the specific nature of its operation. Results. Public-private partnership in innovation is a form of relationship that arises between the public sector and private business on a medium- or long-term basis and involves the creation of innovation infrastructure, production, and distribution of innovation products on mutually beneficial terms, which is achieved by providing a specific form financing, the common interests of the participants and the distribution of possible risks between them. The organization of public-private partnership, especially in the field of innovation, is influenced by a significant number of factors among which it is useful to outline institutional, legislative, economic, internal, and external, direct, and indirect. The institutional factor determines the nature of institutional policy that affects public-private partnerships. Legislative factors provide for legal regulation of the establishment and further operation of public-private partnership in the field of innovation. The economic factors influencing the organization of public-private partnership include credit, tax (tax holidays, reduction of income tax rates, tax credit), investment and depreciation (reduction of depreciation, increase of depreciation rates) policy. Practical implications. As a result of the analysis, several benefits that both the public sector and private business receive from the spread of public-private partnerships in innovation are outlined. The reflection of institutional, legislative, economic, and other factors of the organization of public-private partnership will allow to consider their influence for the intensification of innovative activity as a basis for increasing the competitiveness of the national economy. Value/originality. The use of systematic analysis allowed to outline the main factors that contribute or conversely the spread of public-private partnership in innovation in Ukraine. Considering their action will minimize the negative manifestations and make full use of the positive aspects, which will be an important factor in enhancing innovative growth on the basis of public-private partnership. Economic and other factors of public-private partnership will allow to take into account their impact to enhance innovation as a basis for increasing the competitiveness of the national economy.

ECONOMIC ASSESSMENT OF THE INVESTMENT CLIMATE IN THE PROCESS OF ENSURING SUSTAINABLE DEVELOPMENT OF UKRAINE

The purpose of the article is a systemic economic analysis of the investment climate in the process of ensuring sustainable development of Ukraine. European integration strategy of Ukraine necessitates the formation of an investment climate in order to adapt to European requirements, create a development strategy to integrate with developed countries, harmonize economic trade and environmental processes. Methodology. In the course of this analysis, the investment climate was considered as a complex open system with the application in the study of the methodology of systemic analysis, which allowed to emphasize certain aspects of the specific nature of its operation. Results. It is established that in modern conditions of acceleration of transformation processes the mechanisms of expansion of investment opportunities and overcoming of investment restrictions at all levels of hierarchy of taxonomic systems are characterized by any importance and intensity. At the global level, this affects the international movement of capital and the formation of world investment wealth through the internationalization of the economies of different countries. At the national level, this applies to regulatory and legal support, formation of institutional support for investment processes, diversification of ownership, sources and types of investment resources. At the local and territorial levels, it is especially important to ensure investment in human capital and the social sphere. The factors of negative influence on the development of Ukrainian industry are determined: reduction of world prices for ferrous metals; national gaps in the development of railway transport causing problems with logistics; the need to repair production facilities in the fields of metallurgy, electricity, gas and steam, carbonite and refining; low level of yield in agriculture (for the food industry); sanctions of the Russian Federation; inflation; reduction in use of electricity and gas due to global warming; market advantage of imports of competitive products. The priority tasks for the development of Ukrainian industry are also outlined: renewal of industrial production facilities; development of infrastructure and logistics; balancing of external and internal market conditions; providing the food industry by increasing the volume of agricultural production; ensuring the purchasing power of domestic consumers and expanding demand. It is established that the level of capital investments in the first half of 2020 lags significantly behind the previous year. In addition, with the development of the COVID-19 pandemic in 2020, the situation with the inflow of foreign direct investment in Ukraine has also deteriorated significantly. According to preliminary results, the balance of FDI amounted to -112.6%. This was not the case even in the unfavorable economic development of 2014, which was characterized as a crisis period associated with the military conflict in the east and the annexation of Crimea. Practical implications. The analysis of the peculiarities of the investment climate and its goals allows to determine the role of investment in achieving the Sustainable Development Goals by 2030, to identify key priorities in solving environmental problems, to form the potential for sustainable development. For Ukraine, these are components of the formation of the investment climate in a pandemic. Value/originality. The use of systems analysis allows to identify the main problems of formation of the investment climate in modern conditions.

Modelling of Privalul Tinoasa channel, in irrigation system Borcea 2 - Danube Romania

The study case is situated in Calarasi County, Romania, near Danube river. The sprinkler irrigation arrangement serves the area of 1018.67 ha, useful, net irrigated area. The sprinkler irrigation arrangement comprises fixed irrigation equipment consisting of 16 central irrigation pivots equipped with nozzle ramps for water spray, the pivots are supplied with water through a network of underground pipes, pumping station, water source the Privalul Tinoasa channel fed from the Danube River The Privalul Tinoasa channel will be cleared and re-profiled, having the role of water accumulation basin that will ensure the aspiration for the designed pumping station. Numerical modelling was performed using the program MIKE11. MIKE 11 is a user-friendly, fully dynamic, one-dimensional modelling tool for the detailed analysis, design, management and operation of both simple and complex river and channel systems. With its exceptional flexibility, speed and user-friendly environment, MIKE 11 provides a complete and effective design environment for engineering, water resources, water quality management and planning applications. The Hydrodynamic (HD) module is the nucleus of the MIKE 11 modelling system and forms the basis for most modules including Flood Forecasting, Advection-Dispersion, Water Quality and Non-cohesive sediment transport modules. The MIKE 11 HD module solves the vertically integrated equations for the conservation of mass and momentum, i.e. the Saint-Venant equations. The input data are: area plan with location of cross sections; cross sections topographical data and roughness of river bed; flood discharge hydrograph. Advanced computational modules are included for a description of flow over hydraulic structures, including possibilities to describe the structure operation.