The article presents a study of the effect of a resistor in a network neutral point from 6 to 35 kV on the conductive electromagnetic interference with the ground-fault current. A mathematical model is proposed.

The main directions of increasing the reliability and electrical safety of power distribution networks are considered in the article. The schemes of the main directions of development and improvement of electric grids are given.

The purpose of this work is to create an information system that promotes Kazakh language popularization in social networks. Kazakh language usage analysis in the Internet had been made. The database and software with a bilingual interface that generate and send messages in the Internet has been developed. Increasing Kazakh language popularity methodology using a messenger program is also suggested.

The paper is devoted to solving logistics problems based on information technologies. Petri net-based modeling is proposed as a solution method. The paper describes solution of the problem of supply chain management based on the Petri net.

When managing a filling station chain, it is necessary to solve the following tasks in dynamics: determining the volume of purchases by types of oil products sold and redistributing the available volume of various types of oil products to filling station chain. The peculiarity of this control task is that the replenishment of the storage of oil products is carried out centrally, and the sale of each type of fuel is carried out at separate filling stations of the network, that is, in many points. At the same time, the volume of each type of fuel sold by each station of the network should be taken into account separately, taking into account the seasonal demand for a specific oil product. In addition to modeling demand, information is needed on the volume of petroleum products that can be purchased from suppliers with the possibility of increasing or decreasing the volume of purchases due to demand. To solve this problem, a list of suppliers of a specific type of oil product with a possible range of supply volumes must be determined. In the proposed model, an attempt is made to solve the above problems. To solve them, a management model was developed, which was implemented using the Visual Studio C # programming environment and MS SQLServer DBMS. When developing the structure of the database tables, the task of managing a network of filling stations based on the Petri net was taken into account: that is, the database tables provided for storing information on the volumes of supplies of petroleum products, the volume of sales of each type of petroleum product, as well as the time of deliveries and sales. To solve the problem of centralized procurement for all types of fuel, the database provided tables with information about suppliers and possible volumes of supplies by them of various types of petroleum products. To solve the problems of forecasting demand, the model includes algorithms for predicting the volume of sales of petroleum products based on the accumulated time series of data for each type of fuel separately. The forecasting was carried out in order to assess the required volumes of purchases of oil products for the coming period. The prediction algorithms are implemented using two methods: linear approximation and exponential smoothing. Both algorithms take into account the seasonality of demand.

Main problem: The literature on regional entrepreneurship tends to neglect interregional human capital flows, and yet spatial mobility provides emerging entrepreneurs with knowledge and networks in different locations to exploit entrepreneurial opportunities. Purpose: The purpose of this study was to establish the relationship between mobility and entrepreneurship. Methods: Examined how multidisciplinary experience and non-local knowledge provide migrants with the desire for opportunity-based entrepreneurship. The connection between the regional environment and entrepreneurial motives based on opportunities for people with and without spatial mobility is shown. The analysis of data from a survey of labor force dynamics is presented, which compares the characteristics and driving forces of entrepreneurial motives of migrants and local residents. A survey has been conducted that indicates a higher prevalence of opportunity-based entrepreneurship among migrant entrepreneurs compared to their local counterparts. Official Kazakh statistics do not take into account the impact of internal migrants on the development of the economy and welfare of the region to which they moved. Results and their relevance: Based on the analysis and survey, it was found that the experience of spatial mobility significantly increases the likelihood of entering an opportunity-based business. The regional environment influences the entrepreneurial motives of migrants and non-migrants, but in different ways. Local entrepreneurs are more affected by the endogenous nature of the firm, while migrant entrepreneurs start businesses based on both local needs and external linkages with wider market areas. The regional environment influences the entrepreneurial motives of migrants and non-migrants, but the experience of spatial mobility significantly increases the likelihood of starting a business based on the opportunities of migrants.

In the conditions of modern economy, factors that affect the security of the business, but relate to external resources in relation to the company or opportunities, become significant. These resources and opportunities in economics have traditionally been identified with macro-economic (economic growth, inflation, exchange rates, government support) and institutional parameters (regulatory framework, transaction costs). The influence of the quality of economic space on economic security of business through the evaluation of opportunities that are tied to the specifics of the economic space is the least researched, including in our country. In this case, according to the latest research in the field of economic geography, economic space acts as a structure-forming platform that can form local markets, with intensive interaction of business agents. The purpose of this study is ensuring of economic security by building business networks in a single economic space. The research area focuses on indicators that characterize economic space, which are successfully used in international practice to determine the quality of economic space. The realization of this approach requires the use of traditional methods of scientific research, such as analysis, comparison, graphical method for visualizing obtained results, which allows determining the agglomeration zone and the space of business networks in it. When considering economic space in relation to building a business network in improving business security, main focus is on the quality of economic space that the region has. The proposed methods of evaluating the quality of economic space are actively used to determine the possibility of building business networks in this space. The authors conclude that business networks play a crucial role in improving the economic security of business in a particular economic space. The set of proposed measures provides additional opportunities and increases the influence of economic space on business security and creates the zone of maximum external security

Main problem: Computer systems and technologies are changing our society significantly. These changes are interconnected with both social and production spheres. Innovative digital technologies have a huge impact on the labor market and professional activity, contributing to their transfer to the electronic environment. Using digital technologies, modern people set new goals and solve problems with an increasing speed of problem solving, capitalizing on the possibilities of collaborative distributed actions within networks. In this regard, new competencies of specialists are in demand. Purpose: The purpose of this study was to establish the impact of the fourth industrial revolution on the education system and the development of skills and thinking for learning. Methods: When conducting scientific research, economic and statistical methods were used. These methods were also used in comparative analysis, as well as in assessing data and indicators of the higher education system, taking into account the impact of the fourth industrial revolution. The analytical method was used to consider the characteristics and factors influencing the development of skills and thinking for learning in modern conditions. The abstract-logical method is used to identify problems affecting the development of the labor market under the influence of digital technologies. Results and their value: The result of the study is that conclusions are drawn about the upcoming changes. Automation and digitalization are likely to lead to significant unemployment in most countries, so adaptation innovation policies are needed to help offset unemployment due to digitalization. Governments need to invest heavily in higher education as an economic development tool for their citizens. Lifelong learning should be identified as a critical element of success in the era of the fourth industrial revolution. Curricula should develop digital skills and address workforce disruptions due to automation.

Main problem: The article analyzes water quality assurance as the main goal of preserving human health. The study of chemical and microbiological parameters of wastewater and drinking water was carried out using generally accepted standards. The number of deaths associated with the use of contaminated drinking water, according to WHO, tripled in 2021 and reached almost 19 thousand against 6 thousand in 2020. In addition, the number of neoplasms, diseases of the genitourinary system, digestive organs and skin increased by 2 %, to 1.486 million. The reasons for the increase in the level of harmful chemicals and microbiological pollutants in the water are outdated sewage treatment plants, old pipes and disinfection with chlorine. Purpose: Study of the quality of wastewater and drinking water in Pavlodar, study of the quality of wastewater and drinking water in Pavlodar. Methods: Sampling of wastewater, chemical and bacteriological analysis of wastewater and drinking water, statistical method, correlation analysis of experimentally obtained results and calculated characteristics, etc. Results and their significance: In the field of public health risk, pollution of reservoirs that are sources of household drinking water supply and recreational water use, the continuing necessary high deterioration of water supply networks, their accident rate, as a result of low level of operation, failures in the operation of treatment facilities. Hygienic assessment of reservoirs according to complex indicators indicates the continuing high degree of water pollution in places of water use. The water quality indicators of the surface reservoirs of the region remain low in terms of sanitary and chemical (primarily organoleptic and general sanitary), as well as microbiological indicators. According to toxicological indicators, the level of water pollution in places of water use is estimated as moderate. The main pollutants of the Irtysh River in Pavlodar are industrial enterprises and housing and communal facilities that discharge untreated or insufficiently treated wastewater into reservoirs. A complex of causes of drinking water pollution has been identified: high deterioration of water supply networks, their accident rate, because of a low level of operation, failures in the operation of treatment facilities, unfair treatment of industrial wastewater by industrial enterprises of Pavlodar, etc. Priority preventive directions for improving the quality of water as a source of life are the implementation of long-term targeted planning of measures for the modernization of water supply and sewerage networks and facilities in Pavlodar. The state of water supply necessary and measures to improve it should be constantly monitored and considered at meetings of sanitary and anti-epidemic commissions.