Estimation Of Economic Efficiency Research Articles

Specific features of production and use of transportation biofuels in selected developing countries (part II)

Aim. To identify specific features of production and use of transportation biofuels in selected developing countries, as well as to assess the potential of bioethanol industry development in the Russian Federation (RF).Objectives. To assess the economic efficiency of bioethanol production in Russia; to reveal the potential of applying foreign experience in the development of bioethanol industry in our country.Methods. In the process of the research the methods of system analysis, comparative analysis, method of expert evaluations, mathematical, statistical methods were applied.Results. The actual estimation of economic efficiency of bioethanol production in Russia was obtained. The cost of a unit of bioethanol, which is equivalent to a liter of gasoline in terms of energy content, is 5-36% higher than the cost of a liter of gasoline (depending on the production technology). At the same time, state support for the production and use of bioethanol in our country is reasonable. This will allow to create additional demand for grain crops and reduce carbon dioxide emissions from motor transport. The production and use of bioethanol will form an additional supply in the gasoline market, will give an opportunity to support projects on deep processing of grain and wood chemistry.Conclusions. The experience of Brazil, China and Indonesia in the development of bioethanol industry is relevant for Russia. At the same time, in order to minimize possible risks in the field of food security at the initial stage of bioethanol industry development, low-quality grain stocks should be used as feedstock and the production of second-generation bioethanol should be stimulated.

How does the horizontal watershed ecological compensation mechanism effect regional economy? −------- a county level empirical study on Xin’an River basin, China

Contradiction between economic development and ecological conservation is a main obstacle for countries’ transitioning towards sustainable development, and the horizontal watershed ecological compensation (HWEC) mechanism is designed to coordinate the contradiction in watershed level. To estimate the actual implementation effect of HWEC mechanism, this study carried out an empirical study on the Xin’an River basin in China. Based on panel data of the Xin’an River Basin from 2005 to 2020, this study constructs a propensity score matching and difference-in-differences (PSM-DID) model to systematically study the impact of HWEC project on county economies. The baseline regression results show that the HWEC inhibits county economic growth (9.32%), and this conclusion still holds after several robustness tests. Heterogeneity analyses suggest that the inhibitive effect of HWEC exhibits variability in temporal, spatial, and industrial dimensions. Mechanism analysis suggests that the HWEC project exerts an overall negative effect on county economy by compelling the shift of local industrial structure from the secondary industry to the primary and tertiary industries. The study fills the economic efficiency estimation on HWEC and provides policy implications for optimization of HWEC to achieve watershed Sustainable Development Goals (SDGs).

Strategic Development Assessment: Evaluating Maximum Expected Monetary Value (EMV) and Expected Opportunity Loss (EOL) for the Cross River Watershed

This research investigates optimal strategic decision-making for hydropower development in the Cross River Basin. The study aims to determine Expected Monetary Value (EMV) and Expected Opportunity Loss (EOL) through BDM, emphasizing overcoming challenges and optimizing resource planning for sustainable development. Collaborative efforts with Cross River Basin Development Authority (CRBDA), Parastatals, and Ministries facilitated comprehensive data collection, validated through the Pearson moment coefficient (R2 = 0.9376). The methodology includes dam project experiments, economic efficiency estimation, net benefit analysis, and BDM application. Noteworthy findings reveal hydropower with a Maximum EMV of 1.69 trillion Naira at 187.7% efficiency and a Minimum EOL of -0.79 trillion Naira at -87.77% efficiency. The dual Models jointly demonstrates 100% validation efficiency, making it a preferred choice for development. Graphical representation elucidates the dynamics between EMV and EOL. The research underscores the importance of employing strategic decision-making models like BDM, contributing insights to address challenges and optimize resource planning. Hydropower aligns with national goals and Sustainable Development Goals (SDGs). Recommendations advocate for strategic policy implementation, emphasizing renewable energy adoption. BDM's efficacy in drawing inferences from historical information addresses dimensionality challenges. Recommending the Federal Government's deployment of BDM aligns with national SDG pursuits, integrating hydropower as a renewable energy source. The research solidifies BDM's effectiveness, contributing valuable insights. References support the methodology and enrich understanding of decision modeling and watershed management.

China's marine economic efficiency: A meta-analysis

With the rapid growth of the global economy and the depletion of land-based resources, the demand for the ocean as a major driver of economic development is increasing. In China, the marine economy has been a significant “blue engine” for national economic growth; hence, it is crucial to evaluate marine economic efficiency to understand China's marine industry's input-output status and development level. Based on 559 independent observations presented in 49 empirical primary studies, we conducted a meta-analysis to quantitatively explore the differences in measurement results and identify the factors influencing marine economic efficiency. The notable results were fourfold. (1) Significant heterogeneity is evident among the findings of the primary studies. Based on the random-effect model, China's overall marine economic efficiency is 0.720, indicating that considerable potential remains for improving economic efficiency in the marine sector. (2) The data types, estimation methods, evaluation indicators, publication types, and publication years of primary studies significantly affect marine economic efficiency estimation results. (3) At the temporal level, marine economic efficiency generally demonstrates an upward trend with the increase in the sample data years. At the spatial level, the marine economic efficiency of the Circum Bohai Sea region is significantly higher than that of the Pan-Pearl River Delta region, whereas it does not significantly differ from the Yangtze River Delta region. (4) The level of marine science and technology, as well as the marine industry structure, exerts a significant positive impact on marine economic efficiency, whereas the gross ocean product negatively impacts marine economic efficiency. Accordingly, the following insights were obtained. In terms of marine economic development policies, policymakers should intensify scientific and technological innovation, balance marine resource use and marine environmental conservation, so that power a shift of the marine economy from resource-dependent growth to the orientation of better quality and benefit. In addition, priority must be given to the synergistic development of coastal regions and marine industry structure optimization and upgrading. Future studies should use long-term panel data, focus on using the parametric stochastic frontier analysis method, and assess negative environmental impacts by constructing a green evaluation index system.

Three-dimensional numerical simulation, energy efficiency and economic benefit estimation of oil shale in situ pyrolysis process

Oil shale in situ conversion processing by the downhole burner heating technology (DBHT) has been technically proven as a field pilot project in the Songliao Basin, Northeast China. In this study, the three-dimensional numerical simulations of oil shale in situ pyrolysis with the hexagonal well pattern were conducted based on the idea of DBHT and the actual oil shale reservoir in Songliao Basin to examine the temperature field and thermal processes. The effects of different well spacings (30, 35, 40, and 45 m), gas injection rates (5, 10, 15, and 20 m s−1), and fracture spacings (2.5 and 3.5 m) on the thermal evaluation process were analyzed. The relative energy efficiency and economic viability of operating an oil shale in situ retort in various cases were evaluated. The results showed that increasing well spacing could enlarge the thermal field and improve the ultimate hydrocarbon production of oil shale, but the excessive well spacing caused the heating time to be too long. An increase in the gas injection rate can significantly boost heat transmission efficiency. The energy efficiency comparison of various cases showed that smaller well spacing was conducive to making full use of energy. The results of economic efficiency estimation indicated that a high recovery of shale oil (>80%) would be very difficult to be made with economy, but optimal conditions can be developed in some cases, determined mainly by the price of shale oil. We anticipate that this study can provide new ideas for designing the oil shale in situ conversion processing.

ОГЛЯД НАУКОВИХ МЕТОДІВ І ПІДХОДІВ ПРОЕКТНОГО УПРАВЛІННЯ ТА ОЦІНКИ ВАРТОСТІ ПРОЕКТУ

The purpose. To carry out a comparative analysis of modern scientific methods and approaches of project management, as well as to consider the peculiarities of the project cost management process. Methods. The research used methods of systematization, generalization, and comparative analysis. The results. The article considers the peculiarities of the application of common project management technologies, namely the PRINCE2 method, the PMBoK guide and the international standard ISO 21500. Their comparative analysis was carried out according to several parameters, and the advantages and disadvantages of each were determined. Considerable research attention is focused on the project cost management process. Its main purpose and importance for achieving success is revealed. Defined the key opportunities provided by the application of scientific methods and approaches to expenditure management, and also identified the complexities involved in this. It is proposed to consider the process of project cost management as a set of four consecutive stages: planning the involvement of project resources, estimating their cost, drawing up a budget and controlling costs. It is noted that such scientific methods and approaches, the use of which will help to effectively manage costs and achieve project success, should be applied at each stage. More detailed attention was paid to the assessment of the project cost. The article describes such a method as earned volume management, which helps to evaluate the effectiveness of the project, using three key dimensions: planned, earned and actual cost. The approach of estimation of economic efficiency of attracting investment in the project are considered. The practical significance. The obtained research results can be applied in practical activities, which will enable project managers to choose management technology and improve the expenditure management process. The results of the conducted research have signs of scientific novelty, namely, the systematization of scientific methods and project management approaches was further developed, which, unlike the existing ones, was carried out in the context of comparison according to several parameters, which allows determining the advantages and disadvantages of using certain project management technologies; an improved approach to the analysis of the project expenditure management process, which, in contrast to existing, takes into account both the possibilities and difficulties of applying scientific methods and emphasizes the need to consider the current circumstances (uncertainty and complexity of the environment during the wartime events).

Comparison of growth performance, survival rate and economic efficiency of Asian seabass (Lates calcarifer) intensively cultured in earthen ponds with high densities

This trial aimed to assess the impacts of high stocking densities on growth performance, survival rate and economic efficiency of Asian seabass (Lates calcarifer) intensively cultured in earthen ponds. The experiment was designed with three treatments of stocking density of 6, 8 and 10 fish m−2. Each treatment was replicated three times. Fish with an initial length of 11.7 ± 0.5 cm and weight of 22.1 ± 1.3 g was stocked in earthen ponds with area of 1000 m2 and water depth of 2.0 m. The fish was fed with pelleted feed containing 43–44% crude protein. Water quality parameters including temperature, dissolved oxygen, pH, salinity, transparency and ammonia concentration were measured once a week. The fish were sampled for length and weight measurement at every 30-day interval. Costs were recorded for economic efficiency estimation. Results of the study showed that the water quality parameters were in suitable ranges for the growth and development of Asian seabass. There was no significant difference (p > 0.05) between means of final length, survival rate and feed conversion ratio of the treatments. However, the growth in final weight and daily weight gain of the fish with the stocking of 6 fish m−2 was significantly higher (p < 0.05) compared to the stocking of 10 fish m−2. The benefit of the treatments of 8 and 10 fish m−2 were higher compared to the treatment of 6 fish m−2 but the highest capital efficiency was recorded for the treatment of 6 fish m−2.

ESTIMATING ECONOMIC EFFICIENCY OF ENTERPRISESE FUNCTIONING

The article analyzes the essence and importance of the mechanism of estimation of production activity efficiency in a modern industrial enterprise. The main aggregated indicators of complex evaluation of economic efficiency of enterprises are determined. In accordance with the prevailing instruments and means of public administration, the main mechanisms of state regulation of the analyzed industry are identified. The theoretical principles of the concept of "enterprise efficiency" as a property and ability of the enterprise to formulate and achieve their goals, taking into account the influence of external factors and using internal conditions of functioning, to achieve the set tasks, using all available resources and means for solving social, environmental, budgetary and other problems of both society and enterprise at the established cost-benefit ratio. The basic theoretical and methodological approaches to the estimation of economic efficiency of enterprises are considered. The basic approaches to the estimation of efficiency of production activity of the enterprise are analyzed and systematized. It is proposed to use econometric modeling to improve the reliability of the estimation of the efficiency of production activity. The expediency of carrying out such an assessment by determining the dependence of the production activity efficiency on the partial indicators of the evaluation mechanism in modern industrial enterprises based on traditional and multifactorial approaches is substantiated. The basic elements of estimation of efficiency of production activity of the enterprise are selected and the integral index of estimation of efficiency of production activity is defined. The main approaches to establishing the essence of economic attractiveness and economic efficiency of investment projects are investigated in the article. It is established that the purpose of assessing economic attractiveness is to determine the efficiency of use of public resources within the project, economic efficiency - to assess the feasibility of using scarce (limited) resources of society in the framework of a specific project. The views of scientists on the choice and characteristics of indicators of evaluating the economic efficiency of functioning of enterprises for the purpose of conducting a comprehensive analysis are investigated. Methodical approaches to assessing the economic attractiveness and cost-effectiveness of investment projects are explored. The main stages of evaluating the economic attractiveness and efficiency of the investment project have been established.

INFLUENCEOF BIOLOGICAL STIMULANT OF GROWTH RADIFARM AND INSECTICIDE OF ЕNZHIO ON THE PRODUCTIVITY AND QUALITY OFTOBACCO RAW MATERIAL

Purpose. The aim of the article is to study of the effect of biological stimulantof growth Radifarm and to insecticide Enzhioon the productivity and quality of tobacco raw material and realization of economic evaluation of its results. Methodology of research. General and scientific methods are used in the process of the study: bibliographic – to study and working of scientific works that touch technology of growing of tobacco; agronomical - for the study of norms of bringing of experimental preparations; economic – at treatment of results of scientific researches for 2019-2020 years; the method of comparative analysis – for the estimation of economic efficiency of different technologies of growing of tobacco. Findings. The influence of ecologically safe pesticides on the growth and development of tobacco plants, yield and quality of tobacco raw materials is substantiated.Recommendations are developed out with the use biologicalstimulantof growth Radifarm and to insecticide Enzhio as effective preparations of increase of the productivity and quality of tobacco raw material of new variety of tobacco of the Ukrainian selection Berley 46 in the agro-climatic conditions of Prydnistrovia of Ukraine. Their application considerably promotes the level of profitability of process of growing of tobacco raw material due to the increase of firmness of plants to the unfavourable factors of environment and assists the increase of competitiveness of tobacco industry of our state in the world market. Originality. The following results that have a scientific novelty are got in the process of research: the new elements of technology of growing and defence of tobacco from illnesses and wreckers are developed with the use of new environmentally sound preparations – growth factor Radifarm and to insecticide knight Enzhio on the tobacco areas of sort Berley 46 in the Prydnistrovia’s region of Ukraine. The indexes of economic efficiency of new elements of technology are substantiated. Practical value. An application domain is agricultural enterprises of Prydnistrovia of Ukraine of all organizational and legal forms that engage in growing of tobacco. Key words: tobacco; varieties; technology; immunity; diseases; pests; growth promoters; insecticides; cost; price; profit; profitability level; economic efficiency.

Economic efficiency estimation of unmanned aircraft application for aerial photography

The use of unmanned aerial vehicles (hereinafter referred to as “UAV”) is one of the most popular ways of collecting objective spatial data on the land plots under survey. The main advantages of UAVs include the significantly lower cost of surveying, design and complex cadastral works compared to traditional methods of determining coordinates (e.g. performing a tacheometric survey and plane-table survey). The designed sector of block No. 9 in the Yurga urban district of Kemerovo region with cadastral No. 42:36:0102001 (land category: residential), comprising 22 apartment buildings, is taken as an example. The economic performance of land plots marking, carried out with cadastral accuracy, based on data obtained using UAVs and without the use thereof, is assessed.

Application of the object-oriented approach to intelligent DCS data flow optimization

This paper is on the thermal power plant intelligent DCS data flows optimization for increase of control performance and technical and economic efficiency. The proposed object-oriented approach for control system data flow interpretation allows building a hierarchical directed structure to trace value transformations through measuring and informational channels. The problem of parameter influence evaluation on the technical and economic efficiency estimation using the described approach is set.

Effects of stocking density on growth performance, survival rate and economic efficiency of Asian seabass (Lates calcarifer) cultured in earthen pond

This trial aimed to evaluate effects of stocking densities of 1-5 fish/m2 on growth performance, survival rate and economic efficiency of Asian seabass (Lates calcarifer) in earthen ponds. Fish with an initial length of 90.7 ± 0.1 mm and weight of 20.8 ± 0.1 g/fish and ponds with 600 m2 each and 1.5 m depth were used for this study. Experiment was designed with three treatments, including different stocking densities of 1, 3 and 5 fish/m2. The fish was fed with pellete feed containing 43 - 44% crude protein. Water quality parameters including temperature, dissolved oxygen, pH, salinity, transparency and ammonia concentration were measured once a week. Fish were sampled every 30-day intervals for length and weight measurement then for their growth estimation. Costs were recorded for economic efficiency estimation. Results showed that the water quality parameters were in suitable ranges for growth and development of Asian seabass. The final average length and weight of density 1 fish/m2 was significantly higher than those at 3 and 5 fish/m2 (P &lt; 0.05). However, there was no significant difference on the fish growth in terms of daily length and weight gain, as well as survival rate and feed conversion ratio between different stocking densities. Asian seabass culture at 3 and 5 fish/m2 resulted in a higher profit compared to at 1 fish/m2. The highest economic efficiency in terms of area pond was showed at 5 fish/m2 treatment.

Methodical approaches to the economic efficiency of entrepreneurial activities

Іntroduction. Economic efficiency of entrepreneurial activity is one of the most important criteria that are associated with the achievement of strategic goals in the development of the enterprise. The main problem in evaluating and applying cost-effectiveness tools is to obtain the best financial results through the use of all available resources. The purpose of the paper is to investigate the problems and generalize those concepts that are related to the choice of methodological approaches and directions of development of economic efficiency of entrepreneurial activity. Results. The paper analyzes of modern methods of estimation of economic efficiency of business activity is made. Problems and shortcomings were identified as well as the implications of using these methods. The concept of economic and social efficiency is elaborated and disclosed, as well as the essence of theoretical and practical aspects on estimation of the enterprise activity efficiency is revealed. Characterization of methodological approaches and methods themselves was also carried out. The analysis on the use of modern methods of performance evaluation in the context of modern development of Ukrainian enterprises is carried out. Positive and negative aspects of application of modern methods of estimation of efficiency of activity of the enterprise were revealed. Priorities of development of methods of estimation of efficiency on the conditions of adaptation taking into account development of market relations are also investigated. Conclusion. Thus, the analysis of modern methods of assessing the economic efficiency of entrepreneurial activity at the present stage makes it possible to conclude that the valuation methods used have positive and negative factors. The conducted research revealed problems in the application of modern methods in practice in business activity.

ECONOMIC EFFICIENCY OF PARTICIPATION IN A CLUSTER OF POTENTIAL PARTICIPANTS

A cluster is a geographic concentration of related companies, organizations, and institutions in a particular field that can be present in a region, state, or nation. Clusters arise because they raise a company's productivity, which is influenced by local assets and the presence of like firms, institutions, and infrastructure that surround it. That is why the necessity of an estimation of efficiency of cluster formations and their structural elements is investigated. Methods of estimation of economic efficiency of cluster activity are offered. A system of indicators of the efficiency of the functioning of cluster entities and their structural elements, based on the levels of cluster efficiency evaluation, is generalized. It is determined that the system of principles for the formation and functioning of clusters can be a motive for identifying existing and identifying promising cluster type entities in Ukraine.

ESTIMATION FEATURES OF ECONOMIC EFFICIENCY OF INFORMATION SYSTEMS UNDER CONDITIONS OF DIGITAL ECONOMY

Under conditions of digital economy development the main problem is estimation of economic efficiency of information systems. The estimation problem of the contribution of implementation actions digital information technologies in economic growth from the point of view of ratio between the expenses and the results is still actual. In the work the reasons not allowing to develop the general techniques of efficiency estimation are defined, and the features of IS estimation problems at the level of profit-making organization (enterprise) are considered.

Methods and approaches for evaluation of economic efficiency of public-private partnership in the investment-innovation activity development

The article defines the preconditions for the efficient assessing the economic effectiveness of public-private partnerships in terms of investment and innovation activities (the need to identify the existing limitations of such assessment, which can help in achieving social, economic, informational, legal and other types of effects; the need to identify the genuine value added of a public-private partnership entity creation/improvement (it is about the utility for public and private partners and other stakeholders); the need to implement in the public-private partnership projects those options that will maximize the expected effects, taking into account regulatory constraints and the minimum cost of resources involved; the need to compare the expected and actual effects of the public-private partnership project). The risks of public-private partnership projects are identified and characterized, including those identified by the current regulatory framework (level of product demand, investment costs, operating expenses, operating income, financing conditions and discount rates, taxes and contributions, as well as currency courses and price dynamics). Methodological provisions on quantification of public-private partnership risks are presented. The main methods and approaches to assessing the cost-effectiveness of public-private partnership in terms of investment and innovation activities were displayed (classical financial methods, qualitative analysis tools, probabilistic methods, portfolio analysis, project approach, budgetary approach, qualitative, financial or combined models). Traditional financial techniques in the field of such economic efficiency estimation are considered (profitability index, payback period, internal and average rate of return, level of investments profitability, etc.). Listed are the so-called new practical guidelines aimed at assessing the cost-effectiveness of public-private partnerships in terms of investment and innovation activity, in particular: Total Cost of Ownership (TCO), C/SCSC (Cost/Schedule Control Systems Criteria – cost-time diagnosis), IT Scorecard (Modified Balanced Scorecard Application (taking into account known public-private partnerships projections of a balanced scorecard), Activity Based Costing (ABС - applying functional and value analysis), Applied Information Economics (AIE), Total Economic Impact (TEI), Total Value of Opportunities (TVO), Rapid Economic Justification (REJ). It is summarized that theory and practice have formed many methods and approaches to evaluate the economic efficiency of public-private partnership in the conditions of investment and innovation activity development. Each of them has its advantages and disadvantages, as well as clearly defined conditions of practical application. Two or more of these approaches should be used to make more substantive conclusions on the cost-effectiveness assessment.

New elements of technology for the growing and protection of tobacco from harmful organisms and its economic substantiation

Purpose. The aim of the article is to study the influence of ecologically safe pesticides on a height and development of plants of tobacco and realization of economic evaluation of his results. Methodology of research. Scientific methods are used in the process of the study: bibliographic (study and working of scientific works that touch technology of growing of tobacco); agronomical - for the study of norms of bringing of experimental preparations; economic method – at treatment of results of scientific researches for 2016-2018 years; method of comparative analysis – for the estimation of economic efficiency of different technologies of growing of tobacco. Findings. The new elements of technology of growing and defence of tobacco are reasonable from illnesses and wreckers and she is conducted complete economic evaluation. Recommendations are worked out with the use of growth factor Pennant and to insecticide Commander as effective preparations of increase of the productivity and quality of tobacco raw material of new variety of tobacco of the Ukrainian selection Berley 46 in the agro-climatic conditions of Prydnistrovia of Ukraine. Their application considerably promotes the level of profitability of process of growing of tobacco raw material due to the increase of firmness of plants to the unfavourable factors of environment and assists the increase of competitiveness of tobacco industry of our state in the world market. Originality. In the process of research next results that have a scientific novelty are got: the new elements of technology of growing and defence of tobacco are worked out from illnesses and wreckers with the use of new environmentally sound preparations – growth factor Pennant and to insecticide knight Commander on the tobacco areas of sort Berley 46 in the Prydnistrovia’s region of Ukraine. The indexes of economic efficiency of new elements of technology are reasonable. Practical value. An application domain is agricultural enterprises of Prydnistrovia of Ukraine of all legal forms that engage in growing of tobacco. Key words: tobacco; varieties; technology; immunity; diseases; pests; growth promoters; insecticides; cost; price; profit; profitability level; economic efficiency.

Методы оценки экономической эффективности логистической системы и управления уровнем логистических затрат

The current crisis situation in coal mining forces coal companies to appeal to in-depth detailed methods of assessing the economic efficiency of business processes and identify additional reserves of optimization of technical and economic indicators. The most problematic issue remains the identification of the logistics costs arising in the processes of supply, production, and sales in the total volume of the company's accounting costs. However, the assessment of the economic efficiency of the logistics system allows coal companies to improve the activities of the functional areas of logistics and develop measures to reduce costs. The article introduces an integrated approach to the consideration of the flows of material and information resources in the technological processes of the mining enterprise and in its interactions with partners. The paper defines the main tasks of optimization of functional areas of logistics to be solved by the management when working with consumers and suppliers, in production processes, in sales activities, in warehousing, cargo handling and transportation, and in the field of inventory management. The research provides indicators of estimation of economic efficiency of logistic system, requirements to system of accounting of logistic costs, and ways of their optimization. The use of the proposed methods of assessing the economic efficiency of the logistics system and management of logistics costs will allow the management of coal companies to improve the quality and reliability of information on the effectiveness of procurement, production, and marketing logistics, as well as to optimize the cost of finished products.

Increasing the energy efficiency of the cycle of heat treatment of aluminum ingots

Heat treatment of aluminum ingots is a fairly energy-intensive production. Therefore, increasing energy efficiency in such processes plays an important role in reducing economic costs. The mathematical model of heat exchange occurring in the cooling chamber of aluminum ingots after homogenization annealing is considered. The model obtained made it possible to study the heat transfer in the cooling chamber. To improve energy efficiency and reduce economic costs, options for recycling hot air from the cooling chamber are offered. The estimation of economic efficiency from use of each of variants carried out.

MATHEMATICAL TOOLING OF ESTIMATION OF ECONOMIC EFFICIENCY OF AGRICULTURAL TRACTORS

Work is sanctified to introduction of complex comparative estimation of economic efficiency of agricultural tractors. It is set that to present tense the absent is generalized complex index, that is able to estimate economic efficiency of work of machine- tractor aggregates (МТА), index, that not only grounds the rational choice of type of МТА but also provides the minimum constituent of running expenses on treatment of earth in an eventual agricultural unit cost at the market. Experience of creation on Ukraine of new tractors (tractors of ХТЗ-21021, ХТЗ-242К with HVMT) first on post-soviet space at the Kharkiv tractor plant resulted in the necessity of development of mathematical tool of design and prognostication of comparative estimation of economic efficiency of МТА on their base. An offer algorithm first allows to set new intercommunications between basic technical and economic parameters and estimation of economic efficiency of tractor (in measuring of losses a hryvnya is on the hectare of treatment of area). The worked out mathematical tool of design of estimation of economic efficiency is first tested in the format of numeral experiment for tractors with application of HVMT as ГОМТ-1С and ГОМТ-2С, worked out on the department of department of "Cars and tractors" of National Technical University "Kharkov polytechnic institute" (NTU "KhPI") for the tractors of ХТЗ-21021 and ХТЗ-242К for " Kharkov tractor plant". Is got all spectrum of kinematics, power, power descriptions of HVMT and basic technical and economic parameters on the whole machine- tractor aggregate, the width of capture of plough is optimized on the criterion of maximal output-input of HVMT ratio, the value of the productivity is found at most, minimum per hectare expense of fuel, minimum losses in hryvnyas on treatment tractor 1 hectare area. The presented mathematical tool allows in the format of numeral experiment to compare efficiency of the wheeled tractors both step hydraulic-mechanical transmissions work in composition that and of HVMT. The brought mathematical tooling over allows to get the comparative estimation of economic efficiency of different home and foreign tractors.