The scientific journal

Bulletin of the Innovative University of Eurasia

Submit an article for review by the editorial board

+7 (7182) 31-64-83

journal@ineu.kz

Back

Search on site

Search results: heat loss

Number of results: 34


Carrying out the repair work at petroleum refineries
Annotation:

The development of the oil refinery is directly related to the peculiarities of the socioeconomic environment, which is determined largely by the favorable conditions of activity of all branches of economy of the Republic of Kazakhstan, a stable regulatory processes of all normative -legal framework of implementation of market reforms and efficiency of making management and innovative solutions in the oil refining industry of the Republic of Kazakhstan. Currently, a lot of efforts are being made to scale modernization of all production processes, as well as modernization of equipment of the oil refining complex of the country

Year of release: 2020
Number of the journal: 1(77)

Preschoolchildren speech development through the theatrical activities
Annotation:

Theoretical aspects of preschool children speech development by means of theatricalization are highlighted in the article which is understood by the authors as purposeful pedagogical activity providing effective learning of mother tongue vocabulary. A number of games classifications are analyzed that make up the theatrical activity. Emphasizing that the theatrical activities can be organized in different areas of work with children of preschool age the authors reveal issues of these areas.

Year of release:
Number of the journal:

The analysis of thermostability characteristics of refractory materials of aluminum electrolyzers
Annotation:

The article considers the methods of rationalizing the process of heating the refractory materials of aluminum electrolyzers up in relation to thermal stresses arising in the hearth lining. The functional goals of the refractory materials are listed. The operational characteristics of the refractory materials are presented. During thermal influence on a hearth lining, the physical effects called thermal expansion occur. The materials which save their properties under high temperature are known as refractory materials. The thermostability is described in more detail. The scientific test bench was used to investigate ultimate strength. The method of temperature and pressure measurement when conducting the experiments is cited. In order to choose the potlining it is necessary to know the peculiarities of refractory materials and actual industrial loadings as precisely as possible.

Author: A.A. Assainov
Year of release: 2015
Number of the journal: 2(58)

The analysis of influence of various parameters on heat conduction of a number of heat-insulating materials
Annotation:

The results of the analysis of influence of some main process factors on heat conduction of heat-insulating materials are given in this article. As major factors were considered: density, temperature, humidity. Researchers are conducted on the basis of the theory of planning of experiment. The got dependences of heat conductivity on a closeness and temperature of material show approximately equal influence of these factors on the exit of experiment

Year of release: 2015
Number of the journal: 2(58)

Methods of energy saving increase under during agglomerate production at Aksu Ferroalloy Plant Branch of “Kazchrome” JSC
Annotation:

In this article issues of efficient use of ferroalloys production waste to save costs are considered; energy efficiency of agglomerate production is calculated; sintering heat balance data are presented by a case study of Aksu Ferrolloy Plant. According to the annual economic benefits calculation the folowing results are obtained: due to аglogases recirculation, fuel saving is 1334.5 t.o.e.; due to reheating it is 1491 t.o.e.; due to installation of thyristor converters to the unit the annual energy saving is 1714000 kWh. Thus, it is identified that besides energy-efficiency measures during recycling of solid and gaseous wastes, the use of agglomerate increases IPF electric furnaces performance as well, decreases specific energy and reducing agent consumption which means the prime cost of finished products will be reduced.

Year of release: 2015
Number of the journal: 2(58)

Waste-heat recovery of turbine condenser water Method
Annotation:

One of the directions of energy saving is the application of heat pumps by means of which it is possible to use low-potential, usually waste heat. The question of the possibility of using heat pumps in thermal power plants is considered in the present article. Also a diagram of possible use in thermal power stations of low-grade waste heat with heat pump installation is presented in the article.

Author: А.P. Plevako
Year of release: 2015
Number of the journal: 2(58)

Integral transformations method in soil freezing problems
Annotation:

The method of integral transformations is used to study the process of bodies heating and cooling. As a result of theoretical calculations the regime of soil freezing depending on the ambient temperature was established. Laplace transformation is practically used to determing patterns temperature of constructed concrete dams, building grounds

Year of release: 2015
Number of the journal: 2(58)

The efficiency of the cavitation technology for autonomous heating systems
Annotation:

This article discusses some of the practical application of cavitation technologies in autonomous heating systems, attached elementary economic calculation. The modern achievements and cavitation vortex heat generators, principle of operation and types of such equipment. Marked positive and negative aspects of installation and operation of heat generators. A comparative analysis of the economic calculation of seasonal operating costs of the vortex heater as auxiliary heating systems and district heating tariffs for Pavlodar.

Author: V.M. Afanasev
Year of release: 2016
Number of the journal: 1(61)

Body heating automatic control system №1 Innovative University of Eurasia
Annotation:

The paper presents the thermal design of the building heating system of a four educational building № 1 Eurasian innovative university.Data are presented for the period from 1 December to 28 February for three seasons: 2013–2014, 2014–2015, 2015–2016 years. On the basis of the actual thermal design graphics and design of heat were built in the period from 1.12. at 28.02 for three seasons (2013-2014,2014-2015, 2015-2016 years). In these graphs clearly visible difference between the two values. According to calculation, the average difference was 13.02 % of the actual heat consumption.

Author: N.D. Khomarov
Year of release: 2016
Number of the journal: 1(61)

The role of healthy lifestyle in strengthening pupils` health – the basics of human life-sustaining activity
Annotation:

This article mainly deals with the role of healthy lifestyle in strengthening pupils` health. The relevance of the issue of healthy lifestyle modeling arises out of the fact that heath is one of the most significant life values of a person and a guarantee of his or her welfare longevity. Currently, due to the low life expectancy of people, it is crucial to foster the meaning of health as the main value in one`s life and importance and necessity of health preservation from the early childhood. Life preservation requires dedicated and persistent efforts from every person. Herewith, it is necessary to understand one fact: life preservation is a personal prerogative. If one is to always be healthy one must remember that it requires persistent, dedicated and considerable efforts. Therefore, it is crucial to have a long course of personal conduct that designates the general culture of our labour and rest management, rational combination of physical and mental workload, sensible nutrition, active leisure and good quality sleep, and, moreover, skills of safe conduct in different dangerous emergencies. All of it composes the system of healthy lifestyle.

Year of release: 2016
Number of the journal: 3(63)

The possibility of applying carbon fuel material in agro-industrial complex
Annotation:

The variants of the use of carbon as a heat-generating material in the agro-industrial complex are highlighted. This will significantly save energy, improve the environment, reduce the cost of operation, repair and maintenance of buildings and structures.

Year of release: 2018
Number of the journal: 1(69)

Innovative technologies for enrichment of flour from wheat grain
Annotation:

The technogenic impact on the ecological environment led to a decrease in the amount of natural food consumed and a change in its qualitative composition. The article discusses the innovative direction – enrichment of food with micronutrients. New types of bread with functional properties for mass nutrition are developed.

Year of release: 2018
Number of the journal: 1(69)

Lime yield and roasting time using ferroalloy gas
Annotation:

Evaluation of the output of lime is made for three options for the use of Ferroalloy gas: when you use the physical heat of the gas; when using the chemical energy of the gas and the location of the reactor after scrubbing; when sharing of sensible heat and chemical energy of the gas. As a result of the calculation of the expected yield of lime, it was found that the use of Ferroalloy gas for the production of lime can fully provide or at least compensate for the deficit of lime in the production of steel. The technology of calcination of limestone with Ferroalloy gas is presented in the form of a cycle synchronized with the smelting of steel, including, in accordance with the gas outlet from the layer and their alternation with pauses of inter-blowing periods. The preliminary technological characteristics of firing obtained as a result of theoretical analysis are used for further experimental and theoretical studies.

Year of release: 2018
Number of the journal: 2(70)

Controlled transformer-type shunt reactors
Annotation:

The possibilities of using controlled transformer-type shunt reactors at power grid substations to optimize the transmission mode are considered. The laws of voltage regulation, providing the mode of natural power and reduction of active power losses in the electrical system, are highlighted. Key words: energy complex, controlled transformer-type shunt reactor, voltage stabilization, thyristor voltage controller, control winding.

Year of release: 2018
Number of the journal: 3(71)
Keywords:

Particularities of dental stem cells types
Annotation:

The article is devoted to the actual problem of tooth loss and solving the problem through the development of tissue engineering. Tissue engineering is a set of methods and procedures aimed at the regeneration of biological tissues. It includes a triad of basic elements: stem cells, extracellular matrix or scaffold, growth factors and signaling pathways. An important role in solving the existing problems is associated with stem cells. Dental stem cells are capable of self-renewal and differentiation. Based on the analysis, it was found that each type of dental stem cells has its own characteristics and applications not only in dentistry, but also in other areas of medicine.

Year of release: 2018
Number of the journal: 4(72)
Heading: Natural sciences

Analysis of the labor market and employment, unemployment of the population in Pavlodar region
Annotation:

Unemployment appears as a clearly negative phenomenon. It is unprofitable to all – both employers, and employees, and the state. Unemployment – is primarily a loss of income of a person, deprivation of the usual way of life. The urgency of this problem is due primarily to the fact that it is one of the important factors affecting economic and socio-political security. The vital interests of society, the state and the individual are closely intertwined in it. In our society, unemployment becomes a chronic disease, the state is not able to overcome it, and people demand respect for their rights to work, free choice of their activities and professions, improvement of living and working conditions, and social protection from unemployment. The article studied both the labor market in the Pavlodar region, as a whole and its individual segments in the context of the regions, its place in the market infrastructure, the main causes of unemployment, the qualitative composition of the unemployed

Author: A.D.Kusmanova
Year of release: 2018
Number of the journal: 4(72)

The main directions of social and economic development of Pavlodar region
Annotation:

This article describes the main directions of socio-economic development of Pavlodar region, provides characteristics and dynamics of the main areas and sectors of the region, including the state of industrial production, agriculture, development of small and medium-sized businesses, the labor market, trade, electricity, heat and water supply, construction. The region is characterized by a progressive and diversified economic structure. In the structure of industry of Pavlodar region the largest share is occupied by the manufacturing industry. The priority direction of development of the regional economy in the context of ensuring its socio-economic development is the development of small and medium-sized businesses

Year of release: 2019
Number of the journal: 1(73)

Possibility of using of thermal pumps at thermal power plants and heat boiler stations
Annotation:

Different diagrams of thermal pumps operation at thermal power plants are considered in the article. Thus, installation diagrams are considered for thermal pump based on the use of low -grade heat of turbo-unit lubricating system oil and blow-down water of a steam generator.

Author: А.P. Plevako
Year of release: 2019
Number of the journal: 2(74)

Assessment of the mechanisms of regulation of innovative activity in the system of global competitiveness
Annotation:

Rapidly changing trends in development of the countries’ economies require rational approach to regulation of innovative activity and investments directed to organization of real economy sector. At the same time, for analysis of current state policy in innovative development system fully it takes to assess effectiveness of regulation innovative activity mechanisms in the economy of Kazakhstan. In this article an assessment of mechanisms of innovative activity regulation in Kazakhstan in global system of competitiveness is carried out. For this purpose, an expert assessment system is used, which is realized as method of Global Competitiveness Index of World Economic Forum (WEF). The authors investigate ranking of WEF in Kazakhstan economy, in particular, assessment of carrying out of country’s innovative activity. Thus, purpose of research is to assess mechanisms of innovative activity regulation in Kazakhstan in a global system of competitiveness. Methodology – synthesis, content-analyze, accommodation, monographic method, factor analysis, economic-statistical research method. Carried out assessment of mechanisms of innovative activity regulation in Kazakhstan in global system of competitiveness allowed fully assess effectiveness of regulation innovative activity mechanisms in economy. Researching subindices of International rating of World Economic Forum for 2017-2018 in relation to 2013-2014 authors noted that in Kazakhstan today there is decrease in all subindices of rating and factors (“Basic requirements”, “Business sophistication”), except for “Innovation” subindex. This subindex was significantly decreased due to sharp deterioration in macroeconomic environment, which is directly related, in opinion of authors, to significant losses in revenues from oil export. This in turn affected deterioration of budget’s indicators. There is special attention to place and role of innovative activity regulation in country’s socio-economic policy. Organizational-methodological problems during realization of innovative policy in Kazakhstan are also in details investigated, which makes it necessary to solve them in order to achieve innovative policy’s efficiency at regional and national levels.

Year of release: 2020
Number of the journal: 2(78)

Influence of ultrasonic treatment on the efficiency of biogas production
Annotation:

This paper presents the results of the influence of ultrasonic treatment in the cofermentation of the cattle manure mixture (cattle) with the leaven from the rumen of ruminants on the process of biogas production. Anaerobic digestion was carried out in matinence periodic operation at the mesophilic temperature of 38 C ̊. As a substrate, a mixture with a content of 70 % cattle manure and 10 % leaven from rumen of ruminants was used. Treatment with ultrasound of the mixture was carried out at an intensity of 10 W/cm2 and an amount of input energy of 9350 kJ/kg of dry matter (DM), which completely eliminated the processes of stratification and sedimentation. Decomposition of organic matter (OM) in the periodic regime with the enzyme and ultrasound treatment occurred within 8 days, the usual substrate during this time OM decomposed 3.0 times less (only 14 %). The process of fermentation of methane in continuous and periodic modes treated with ultrasound, as at other temperatures, was stable, as can be judged by the values of volatile fatty acids (VFA) Volatile fatty acids (VFAs), alkalinity, pH, and biogas. The energetical efficiency of methane fermentation is estimated by comparing the volume of fuel (biogas) and heat consumption for technological needs. As shown by the comparison of efficiency of different regime, the largest amount of commercial energy in the form of biogas was obtained in the mode of joint fermentation of a mixture of cattle manure (cattle) with a ferment from the rumen of ruminants treated with ultrasound – 3 times more than without treatment (space).

Year of release: 2020
Number of the journal: 2(78)

The study of nutritional values and organoleptic properties of poly-grain extruded mixture
Annotation:

Among many environmental conditions that affect a person, the most important factor is nutrition. Today, there is no doubt that there is a direct link between nutrition, health and disease. Proper nutrition ensures normal growth and development of a person, contributes to the prevention of diseases, has a positive impact on life expectancy and creates conditions for adaptation to the environment. A very actual topic for public catering in the Republic of Kazakhstan, namely for fast food companies, is the development of new recipes and culinary products from relatively inexpensive vegetable raw materials, as well as qualitatively new food products with a purposefully changed chemical composition. One of the main ways of solving problems of expanding the production of products for quick service, as well as products for dietary and therapeutic and preventive nutrition is the use of sprouted grains and beans. In this article, poly-grain mixtures of sprouted wheat and extruded soy beans in different ratios are studied and considered. Poly-grain mixtures developed by us are balanced in nutrients, vitamins and amino acids. The research was carried out on the basis of the accredited testing laboratory of RUBICOM enterprise LLP and the scientific laboratory of the Innovative Eurasian University. The purpose of this work is to study a promising method for increasing the nutritional value of grain mixtures by extruding them at different temperature conditions. To achieve this goal, the following tasks were planned: – to study the grain of soy beans and sprouted wheat on the organolepti c characteristics and chemical composition of the poly-grain mixture; – examine the chemical composition of the poly-grain mixture before extrusion; – choose the optimal mode of the extrusion process; – study and analyze the chemical composition of poly-grain extruded mixture; It should be noted that we have developed for the first time the optimal technological mode of extrusion of poly-grain mixture from sprouted wheat and soy beans, and the physical and chemical composition of the poly-grain mixture was studied. The results of the research presented in this paper are the basis for the development of recipes and technologies for fast food products. The reliability and validity of scientific statements is confirmed by the choice of modern methods of chemical composition analysis.

Year of release: 2020
Number of the journal: 2(78)

New format of relations in public procurement of the Republic of Kazakhstan in connection with the pandemic COVID-19
Annotation:

In this article, the author examines the problems of legal regulation of public procurement in a state of emergency and quarantine measures. The purpose of this article is to study the changes that have appeared in the legislation of the Republic of Kazakhstan in connection with the introduction of the state of emergency and quarantine in the country. The author provides a legal assessment and analyzes the new norms of Kazakhstani legislation regulating public relations in the field of organizing public procurement. The closure of state borders, the violation of the usual, accumulated over the years, economic ties led to disruptions in the economic activities of state bodies. With all the disadvantages that took place, the positive factor was that the demand for the goods of Kazakhstani producers on the market increased. The introduced new method of public procurement using framework agreements made it possible, in turn, to ensure the guaranteed sale of products of Kazakhstani commodity producers, and also made it possible to apply import substitution of frequently purchased goods. In this article, the author, on the basis of a study of the current practice in this area, demonstrates the features of legal regulation of the sphere of public procurement in completely social new conditions with the help of novelties in legislation, and also reveals the features of the operation of legal norms regulating the sphere of public procurement of goods, works and services in conditions of a state of emergency and quarantine measures. The adoption of special measures by the Government of the Republic of Kazakhstan made it possible to transfer financial and economic relations in the state to a new format – "customer-supplier". The measures taken by the government have now been extended until the end of 2020. These measures on the part of the Government of the Republic of Kazakhstan made it possible to introduce a sparing legal regime for regulating this area for representatives of medium and small businesses, in order to minimize the losses of the latter arising against the background of the introduction of a state of emergency and quarantine measures. Taking into account the analysis of judicial practice in the consideration of cases on public procurement, the author emphasizes that in conditions of quarantine measures in Kazakhstan, as a rule, there are violations of the same type, both on the part of customers and on the part of suppliers.

Year of release: 2020
Number of the journal: 3(79)
Heading: Law

Study of the effectiveness of applied standards in railway transport
Annotation:

The article describes the results of a study of the effectiveness of the standards being implemented in railway transport. A general view of efficiency and standardization was analyzed. It was studied which document regulates the application of standardization in the Republic of Kazakhstan. Further, the international railway standard IRIS «International Railway Industry Standard» was taken as a basis, which, in turn, is based on the international standard ISO 9001. A study of the methods and types of effectiveness of standards was carried out, as well as an analysis of the applied international standard in the field of railway transport IRIS. The purpose of this standard is to create a business management system that allows for continual improvement, with an emphasis on preventing and reducing delivery defects. It is important to note that the effectiveness of standardization is evidenced by examples showing that ignoring standards turns out to be huge losses for a company for a number of reasons, for example, because its products have not been certified for compliance with a specific standard; due to the additional costs of the company for reworking products that are not manufactured in accordance with the requirements of the standards in the country of export. An analysis of the effectiveness of standardization work in the railway industry can be expressed in relative terms of the effects obtained as a result of the application of the standard: for example, in an increase in the level of safety or in economic growth. The basis for determining the actual effect is the actual level of production that existed at the given enterprise before the introduction of the standard. The measures that can be applied in order to increase the efficiency of solving the problems of developing standardization in the field of railway transport have been studied. Such standardization as one of the elements of technical regulation can provide a contribution to economic growth in excess of the corresponding indicators from the introduction of patents and licenses.

Year of release: 2020
Number of the journal: 3(79)

Grain market of the Republic of Kazakhstan: assessment of the state, identification of problems and development trends
Annotation:

The article reveals the dynamics of grain production in the Republic of Kazakhstan, grain exports by countries. The author analyzes the grain market (sown area, yield, gross harvest). Kazakhstan has a significant potential for grain exports. Grain exports are important for the country's economy. The country is one of the six largest grain exporters in the world. This is due to the high milling properties of Kazakh grain, the quality indicators of Kazakh flour are highly valued in many countries of the world, which allows Kazakh wheat to be competitive in the world market and provide markets in various countries of the world. The main export destinations are Uzbekistan, Afghanistan and Tajikistan. The article analyzes the main trends in the development of the grain market and gives an assessment of the state.

Author: O.I. Zhaltyrova
Year of release: 2019
Number of the journal: 2(74)

Development and research of means and methods for improving the efficiency of heat stations in the Republic of Kazakhstan
Annotation:

The main problem: This article is devoted to the key problems of the fuel and energy complex of the Republic of Kazakhstan: 1) lack of production capacity to meet the growing demand for energy and fuel from the economy and the population. Increased demand for electricity and heat, which will require the commissioning of new generating capacities.There is already a shortage in the fuel markets. Modernization and bringing the existing oil refineries (hereinafter referred to as refineries) to full capacity will not allow providing the domestic market until 2030; 2) the export orientation of raw materials, the dependence of the economy on the export of energy resources. In order to attract technology and investment in the oil and gas and nuclear industries, agreements on the extraction of energy resources were concluded with international export companies. In the medium term, Kazakhstan may face a shortage of oil for domestic refineries, if measures are not taken to stimulate its refining within the country. The uranium mined is fully exported; 3) high energy intensity of the economy, low level of energy efficiency. There is a high potential for increasing the efficiency of energy use both in the electric power industry and fuel production, and at the level of final consumption – in industry and housing and communal services; 4) decrease in the replenishment and quality of the resource base in the oil and gas, coal and nuclear industries; 5) low environmental friendliness of technologies used in the fuel and energy complex. Purpose: The purpose of the article is to reveal the problem in the field of ensuring the fulfillment of international obligations between different countries and their own energy sufficiency by gradually changing the structure of energy production. Methods: Studying the experience of increasing the efficiency of the use of energy resources and energy saving as a priority of the state policy of the country. Analysis of production capacity with a constantly forecasted shortage of primary energy resources and insufficient growth of capacity for the production of electricity and heat. Consideration of the possibility of compensating for the shortage by saving energy resources, increasing tariffs for energy carriers, as a stimulating factor for their effective use. Results and their significance: The results of this article will reflect the problems of energy, as the most important driving force of global economic progress. The well-being of the people depends on the state of the country's energy sector, therefore there is an urgent need to solve the emerging problems. The global energy problem is, first of all, the issue of stable and efficient supply of fuel and energy to mankind. Today, the energy sector of Kazakhstan is focused on fuel resources, since the country is provided with hydrocarbons and other energy resources. About 72 % of electricity in Kazakhstan is generated from coal, 12,3 % from hydro resources, 10,6 % from gas and 4,9 % from oil. Thus, the four main types of power plants generate 99,8 % of electricity, while alternative sources account for less than 0,2 %.

Year of release:
Number of the journal:

Some aspects of justification of acceptable risk levels in oil refineries
Annotation:

Currently, the problems of environmental safety are facing society. The industry develops every year. In this critical economic situation, the oil industry is a stimulant for the economic sector in Azerbaijan. The level of development of this industry is also relevant due to other reasons: sociological, technological and features of the economy of Azerbaijan. The production activity of oil processing, concentrating harmful substances and energy, is a source of man-made danger and pollution of the natural environment. The risk management process mainly consists of three stages - risk safety analysis, risk assessment, which is carried out in comparison of calculated and actual risk levels, the so-called acceptable risk levels and the adoption of appropriate regulations and management decisions. One of the factors that should be taken into account when assessing risk and safety is to determine the necessary costs. Since these costs are paid directly to the company, they try to minimize them as much as possible, which reduce the accuracy of risk assessment. One of the objectives of the study is to determine the optimal value of the necessary costs. It is established that the less reliable the method, the lower is the cost of its implementation. The methodological basis of the work was scientific works on these problems of scientists-economists, mathematicians on safety and risk assessment at industrial enterprises. When developing the presented methodology, computational algorithms developed by Dow Chemical were used. This company has collected a large volume of material on accident statistics, taking into account damages. Based on the obtained and experimentally verified data, a system of indices has been developed, an assessment of various indicators for qualitative and quantitative risk assessment of oil refineries. The analysis of the technogenic danger of oil refineries makes it possible to determine ecological and economic losses and choose rational possibilities of acceptable risk. The required costs, depending on the level of risk, are determined based on an increase in the accuracy of calculating the probability of occurrence of the cause of risks. The article examines the relationship between the expected level of risk and economic losses during oil refining in separate technological units, which allow determining the required level of risk and the expected economic damage.

Author: Kh.B. Gulieva
Year of release: 2021
Number of the journal: 4(84)

Ingularly perturbed equations in critical cases
Annotation:

Singularly perturbed partial differential equations with small parameters with higher derivatives deserve special attention, which often arise in a variety of applied problems and are used in describing mathematical models of diffusion processes, absorption taking into account small diffusion, filtration of liquids in porous media, chemical kinetics, chromatography, heat and mass transfer, hydrodynamics and many other fields. It is necessary to consider the creation of an asymptotic classification of solutions of singularly perturbed equations using a well-known approach to solving the boundary value problem. In this case, the singular problem is understood as the problem of constructing the asymptotics of the solution of the Cauchy problem for a system of ordinary differential equations with a small parameter with a large derivative. The asymptotics of the solution in all cases is based on the last time interval or the construction of a boundary value problem for a system with a weak clot in an asymptotically large time interval. Purpose - to construct and substantiate the asymptotics of solving a singular initial problem for a system of two nonlinear ordinary differential equations with a small parameter; To date, a number of methods have been developed for constructing asymptotic expansions of solutions to various problems. This is the method of boundary functions developed in the works of A.B. Vasilyeva, M.I. Vishik, L.A. Lusternik, V.F. Butuzov; the regularization method of S. A. Lomov, methods of averaging, VKB, splicing of asymptotic decompositions of A.M. Ilyin and others. All the above methods allow us to obtain asymptotic expansions of solutions for wide classes of equations. At the same time, such singularly perturbed problems often arise, to which ready-made methods are not applicable or do not allow to obtain an effective result. Therefore, the development of methods for solving equations remains a very urgent problem. As a result of the study, an algorithm for constructing an asymptotic classification of the initial solution of the problem with a singular perturbation is given, and approaches to estimating the residual term are also shown.

Year of release: 2021
Number of the journal: 4(84)

Simulation of the working cycle of a diesel engine with a system of periodic shutdown of the cylinders
Annotation:

Combustion engines operate over a wide range of power and speed. To the greatest extent, this applies to automotive and tractor engines and diesel engines operating at fractional and idle loads for a significant part of the operating time. When designing engines, the choice of their main design and layout parameters is carried out in a comprehensive manner, taking into account the provision of the required power and efficiency in the modes of maximum torque and rated power. However, ensuring the economical operation of modern highly accelerated diesel engines at low loads and idling causes a whole range of problems related mainly to the organization of effective mixture formation and fuel burnout, as well as to ensuring stable fuel supply. Thus, the cycle dose of injected fuel in idle mode is 8–12 times less than the cycle dose in nominal mode, which determines increased requirements for fuel equipment and difficulties in ensuring high-quality mixture formation. At the same time, diesel engines operate in idle mode up to 50 % of the total operating time, consuming up to 15–20% of the fuel. For truck engines, the relative idle time is approximately 20–25 %. Thus, the development of measures to improve the efficiency of diesel engines at idle is relevant. The purpose is to perform a numerical analysis of the effect of switching off cycles in diesel engines for autotractor and diesel locomotive purposes on the working processes in the cylinder and the indicator parameters of the cycle in idle modes. When writing the article, traditional methods (comparison, description, and measurement), generallogical methods and research techniques (analysis, generalization, etc.) were used. A numerical analysis of the operating cycle of a diesel engine equipped with a cycle shutdown system was performed. The relationship between changes in fuel injection characteristics when cycles are turned off with indicator indicators of the engine operating cycle in idle load modes is disclosed. It has been established that the expediency of switching off cycles in a specific engine operation mode is determined primarily by the features of the injection, carburetion and fuel burnout processes.

Year of release: 2022
Number of the journal: 1(85)

The use of a heat pump at an industrial enterprise in the region
Annotation:

Main problem: The use of waste heat is most often solved by installing heat exchangers, but this is not effective when the temperature of this heat does not exceed 10-15 0 C, in which case this heat can be used using a heat pump. Where can I get this heat? Almost any enterprise needs cooling of any equipment elements or substances – working fluids; the heat received from them can be sent to a heat pump and used here at the enterprise. Purpose: Consideration of the possibility of using the heat of cooling water from the pump CNS 60-165 and the proposal of a new scheme with the installation of a heat pump that uses this heat. Methods: This is achieved due to the fact that it is proposed not to discard the heat, but after its use in the heat pump evaporator, transfer it to the heated medium - water, which is then sent to the shower cabins of the enterprise. Since the showers are located in the same room, the cost of transporting heat and losses will be minimal. Methods: In the course of the research, the possibility of using the waste heat of an industrial enterprise for using it here at the enterprise for the purposes of hot water supply was considered. For these purposes, it is proposed to install a heat pump, thanks to which the thermal potential increases, which makes it possible to fully use the received heat. Results and their significance: As the experience of foreign countries has shown, heat pumps can be widely used in many industrial enterprises, and in conditions of increased competitiveness, in order to reduce energy costs and the cost of manufactured products, install heat pumps to utilize excess heat, for example, process water, which is available in many production allows you to have a significant economic effect.

Year of release: 2022
Number of the journal: 2(86)

Energy savings through the use of refractory masonry with a lower thermal conductivity
Annotation:

Main problem: recently, much attention has been paid to energy saving in production, especially when it comes to industrial units that burn fuel. There are several ways to maximize the use of the heat released during the combustion process, for example, to reduce the temperature of the flue gases at the outlet of the unit, by maximizing its use, both in the technological process itself and by installing additional heat-receiving units, for example, air heaters or other heaters. Another way to save money is to reduce heat losses through the lining of these high-temperature units. Metallurgical units that consume a large amount of energy and fuel require an analysis of their consumption, and ways to save their consumption based on the results of the analysis. Purpose: this article considers the possibility of replacing the existing inner insulation layer of the second and third sections of a high-temperature unit - a metallurgical furnace, with a new one with better technical and economic indicators. Methods: the possibility of replacing the existing inner insulation layer of the second and third sections of the high-temperature unit with a new one, with the best technical and economic indicators, was considered. The calculation of heat losses by thermal conductivity through the side surfaces and the roof with new insulation was performed, and the economic efficiency of the proposed solution was proved. Results and their significance: replacing the existing inner layer of insulation - refractory concrete PHLOCAST M30 (thermal conductivity coefficient from 1,4 to 1,45) with the proposed CERALIT GUN HK 70070 (thermal conductivity coefficient from 1,03 to 1,12) will reduce heat loss to the environment, and thus to reduce fuel consumption for the furnace.

Author: А.P. Plevako
Year of release: 2022
Number of the journal: 4(88)

Analysis of mechanisms of regulation of innovation activity in the system of global competitiveness
Annotation:

Main problem: rapidly changing trends in development of economies of countries require a rational approach to state regulation of innovative activity and investments directed to organization of real sector of the economy. At the same time, for analysis of modern state policy in the system of innovative development, it is necessary to assess the effectiveness of state regulation mechanisms of innovative activity in the economy of the Republic of Kazakhstan. Purpose: to assess mechanisms of state regulation of innovative activity in the Republic of Kazakhstan in the global competitiveness system. Methods: synthesis, content analysis, accommodation, monographic method, factor analysis, economic and statistical research method. Results and their significance: the assessment of the mechanisms of state regulation of innovative activity in the Republic of Kazakhstan in the global competitiveness system allowed to fully assessing effectiveness of mechanisms of state regulation of innovative activity in the economy. Examining the sub-indices of international rating of the World Economic Forum for 2021-2022 in relation to 2017-2018, the authors came to conclusion that in Kazakhstan today there is the decrease in all the sub-indices of rating and their factors (“basic requirements” and “business complexity”), with exception of “innovation” sub-index. This sub-index was significantly reduced due to a sharp deterioration in macroeconomic environment, which is directly related, according to the authors, to significant losses in oil export revenues. This, in turn, affected the deterioration of the state budget indicators. The article pays special attention to place and role of state regulation of innovative activity in the socio-economic policy of the country. Organizational and methodological problems in development and implementation of innovative policy in the Republic of Kazakhstan are researched in detail, which makes it necessary to solve them in order to achieve the effectiveness of innovative policy at the regional and national levels.

Year of release:
Number of the journal:

Digitalization of accounting and its impact on the activities of small and medium-sized businesses
Annotation:

Main problem: For several years, the state has been trying to reduce bureaucratic processes with entrepreneurs, make accounting transparent, reliable and with less labor costs. At the moment, without digitalization in accounting, it is impossible to predict the further development of trade and economic relations in general, since it significantly affects the sale, movement and shipment of goods. The gradual transition of the economy of the Republic of Kazakhstan to the path of digitalization can be considered the most important condition for the development of both the country’s economy and the Eurasian Economic Union. Digital inspection is the process of monitoring goods using digital systems, which helps reduce the risk of human error. In the context of digitalization, work with documentation should be structured in such a way that access to them is ensured throughout the entire limitation period, thereby facilitating the taxpayer in making the right economic decisions. The purpose of this article is to consider the gradual integration of digitalization into the field of accounting for both small and medium-sized businesses, and also to consider its impact on the business processes of organizations. The main objective of the article is to consider the introduction of digitalization into business processes and possible problems during its integration, as well as to identify ways to eliminate them without losses for both the state and small and medium-sized businesses. Methods: In the course of writing this article, a dialectical approach was mainly used, which made it possible to examine in detail the process of reflecting and controlling document flow when moving goods in the context of digitalization. Approaching the issue theoretically and summarizing practical experience, it was possible to identify the positive and negative aspects of accounting and control of the movement of goods on the territory of the Republic of Kazakhstan and beyond its borders in the conditions of rapidly developing digitalization. Results and their significance: This article reflects the main directions of modernization of accounting and operational accounting in Kazakhstan in the context of the progressive digitalization of the economy. The necessity of creating an information environment for managing economic processes and optimizing the operational activities of an enterprise is substantiated, and the positive and negative aspects of the integration of various information systems and modules for maintaining accounting and operational records at an enterprise are considered

Year of release:
Number of the journal:

Evaluation of Mechanisms’ Effectiveness of State Regulation of Innovative Activity
Annotation:

Main problem: Rapidly changing trends in development of economies of countries require a rational approach to state regulation of innovative activity and investments directed to organization of real sector of the economy. At the same time, for analysis of modern state policy in the system of innovative development, it is necessary to assess the effectiveness of state regulation mechanisms of innovative activity in the economy of the Republic of Kazakhstan. Purpose: to assess mechanisms of state regulation of innovative activity in the Republic of Kazakhstan in the global competitiveness system. Methods: synthesis, content analysis, accommodation, monographic method, factor analysis, economic and statistical research method. Results and their significance: The assessment of the mechanisms of state regulation of innovative activity in the Republic of Kazakhstan in the global competitiveness system allowed to fully assess effectiveness of mechanisms of state regulation of innovative activity in the economy. Examining the sub-indices of international rating of the World Economic Forum for 2021-2022 in relation to 2017-2018, the authors came to conclusion that in Kazakhstan today there is the decrease in all the sub-indices of rating and their factors (“basic requirements” and “business complexity”), with exception of “innovation” sub-index. This sub-index was significantly reduced due to a sharp deterioration in macroeconomic environment, which is directly related, according to the authors, to significant losses in oil export revenues. This, in turn, affected the deterioration of the state budget indicators. The article pays special attention to place and role of state regulation of innovative activity in the socio-economic policy of the country. Organizational and methodological problems in development and implementation of innovative policy in the Republic of Kazakhstan are researched in detail, which makes it necessary to solve them in order to achieve the effectiveness of innovative policy at the regional and national levels.

Author: Buka S.A.
Year of release: 2024
Number of the journal: 1(93)