Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

Centralized water supply in remote settlements is often difficult or impossible, so there is a need to use a non-centralized water supply. The article develops a method for an expert assessment of the negative change in the state of underground karst waters based on a paired analysis of complex indicators of the protection of the aquifer. To assess the vulnerability of non-centralized water supply sources, five factors are used, including the geological structure of the territory, the level of surface and underground runoff, the development of the karst network, precipitation regime electrical conductivity, and mineralization of groundwater. The test was performed using the method of inversely weighted distances (IDW). The vulnerability assessment of karst waters was carried out in the area of 10 key control points identified during the deployment of the hydrogeological control system in 2017. Based on various geological and hydrological indicators, the discrepancy between the vulnerability assessment of karst waters was no more than 15 %. The conditions under which it is advisable to use direct measurements or geoelectric methods to monitor karst groundwater's state are identified.

When justifying the relevance of the research task of measuring the contribution of macroregions to the country's economy, which has not yet found a scientific and methodological solution, it should be emphasized that the scientific literature does not present a system of parameters for assessing the contribution of macroregions to the national economy, there are practically no comprehensive methods for analyzing the impact of the functioning of macroregional socio-economic systems on the development of the country's economy. The article is devoted to the scientific and theoretical research of methodological approaches to determining the importance of macroregional socio-economic systems. A system of indicators is proposed for assessing the role of a macroregion in the national economy, reflecting its specificity as an integration territory and characterizing the level, degree and intensity of interaction between the actors of the macroregional economic and industrial complex.

The development of the digital economy in Russia lags behind the world leaders in this process. However, to become competitive in the digital space of the global economy, it is necessary to overcome this lag. This requires generalizing theoretical approaches and concepts of the digital economy in Russia and the world, tracking the evolution of views, approaches, and development prospects, analyzing the level of digitalization, digital competitiveness rating, indicators of the development of the digital economy's development and digital government. This was done in the article since the purpose of the study is to generalize theoretical approaches to the essence of the digital economy and the prospects for its growth from the point of view of evolution. Concerning findings of the study, the evolutionary stages of the development of the digital economy have been identified, SWOT analysis of the evolution of the digital economy in Russia has been carried out, a conceptual scheme for the digital transformation of business has been devised. The paper defines the essential elements of digital transformation and their relationship.

The article proposes the author's scientific approach using the categorical grid method to determine the essence and composition of an organization's intellectual capital elements. They determined the list of elements describing the problem field of research. A categorical network has been formed that determines the scenarios for interacting intellectual capital elements. Possible connections between the tops of the triadic grid of intellectual capital phenomenon are revealed, which makes it possible to clarify the elemental composition of intellectual capital, to correlate the concepts of "consumer capital", "client capital", and "relational capital". The performed interpretation of the developed model of the triadic grid makes it possible to comprehend and describe the behavior of intellectual capital and possible scenarios for its development.

The article's main aim is to examine the role of organizational commitment mediation on career development and employee performance. This research is survey research, with a sample size of 82 selected with saturated samples. The results showed that quality of work-life and career development had a positive and significant effect on organizational commitment. Quality of work-life, career development and organizational commitment positively and significantly affect employee performance. Organizational commitment has not been able to mediate the indirect effect of quality of work life on employee performance. Organizational commitment has not mediated the indirect effect of career development on employee performance. It is recommended that the management organize Capacity building and family gathering activities to build teamwork among employees.

Prevention of juvenile fish from entering water intakes for various economic purposes utilizing a fish protection structure design is associated with the need to divert protected juvenile fish (fish outlet) to a safe place of a water source while maintaining its viability. The development of principles for selecting fish outlet structural elements is based on the existing hydraulic and biological requirements to ensure the effective movement of fish outside the influence of water intake. For the conditions of an open gravity fish outlet, the features of functioning and possible ways of its central element optimization are considered: the inlet part, the receiving section, and the transition section. Based on the analysis of the most characteristic features of the flow formation in the zone of the water intake influence, the conditions for the layout of the inlet part of the fish outlet are determined. The technical solution of the receiving section is based on the design features and calculation of the hydraulic parameters of the pressure nozzles. Moreover, the structural elements of the receiving section should be a sequential combination of nozzles from the functional aspect: a conical confuser – a cylindrical nozzle- conical diffuser, and the hydraulic conditions should correspond to biological requirements and ensure a flowing current that is safe for fish; the analysis of hydraulic and technical conditions of fish outlet is given. From the standpoint of modern hydraulic and biological requirements and the knowledge of fish behavior patterns, the optimal design is proposed for the design of the inlet portal of an open gravity fish outlet of the fish protection structure of the water intake facility.

This study investigates the relationship between social responsibility and cost of equity capiral and the moderating effect of operational risk on the mentioned relationship. The study covers a 6-year research period during 2014 to 2019. 146 firms (total of 876 year-firm) are selected as the statistical sample using systematic elimination sampling method. The hypotheses are analyzed using multivariate regression models and panel data methods are also applied. The results indicate there is a significant negative relationship between social responsibility and cost of equity capital. The operational risk has a significant and inverse effect on the relationship between social responsibility and cost of equity capital.

The Trichoderma spp genus represents a very important group of organisms in modern agriculture because they inhibit the growth of phytopathogenic fungi. However, it has been published that its ecological behavior varies depending on the geographical region where it comes from. In this study, the ability of 17 native Trichoderma spp isolates to inhibit the in vitro growth of three Fusarium spp isolates was evaluated. For the isolation of the fungi, the serial dilution technique and the growth medium Papa Dextrose Agar (PDA) were used, later the antagonism against three isolates of Fusarium spp was evaluated by means of the dual culture technique. The three Fusarium spp isolates were molecularly identified as belonging to two F. equiseti isolates and one identified as Fusarium spp. The percentage of Radial Growth Inhibition (PICR) was determined; obtaining the following results T. harzianum, T. asperellum and T. virens presented the percentages of PICR with 81.57%, 79.62% and 78.62% respectively, surpassing the rest of the isolates. The isolates T. harzianum, T. asperellum and T. virens must be evaluated under greenhouse and field conditions to define effectiveness and establish applicability.

Vegetable growing is an important sub-sector of agriculture. The provision of the region's population with vegetable products depends on its successful functioning. Vegetables contain vitamins, minerals, and fiber necessary for humans, which makes them an irreplaceable food product. The authors analyzed the current state of production and consumption of vegetable products in the region and made a forecast of the need for vegetable products until 2035, gave a number of recommendations to fully provide the population of the region with vegetable products. The transition of vegetable growing to a new level of technology development requires improvement, strengthening of human capital in the rural sector. Since in modern conditions the quality and quantity of products produced by the agro-industrial complex depends on the main characteristics of workers, therefore, special attention should be paid to changing the paradigm of agrarian education.

The current review considers the assessment of electronic status as one stage of the essential arranging procedure of data frameworks. By concentrating on the current circumstance of the association regarding electronic preparation and distinguishing its qualities and shortcomings, or computerized partition, the essential arrangement of the association's data frameworks can be offered with the goal that the undertakings of data frameworks lead to both the improvement of the advanced gap and acknowledgment of association's systems. Having the data on electronic availability forestalls characterizing those undertakings in the essential arrangement of data frameworks whose requirements are not yet prepared in the association. It assists with building up a solid arrangement for creating Information Technology (IT) depending on the abilities and capacities of the association in various parts of IT.