Kuban State Technological University
Author list of organization
List of articles written by the authors of the organization
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SCENARIO APPROACH TO PROJECT MANAGEMENT
DescriptionThe study was carried out with the financial support of the Russian Foundation for Basic Research, within the framework of the RFBR research project 17-02- 00475a "Application of metaheuristic algorithms to solving direct and inverse problems of optimizing control of spatially distributed complexes". The article considers the task of scenario approach to project management in case of abnormal progress of its implementation. Various contingencies have been analyzed in the course of project implementation. A model of the scenario approach for project management using the training principle with reinforcement is proposed
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COMPARATIVE ANALYSIS OF THE VENTILATION MODELS OF THE SUBSTRATE WHEN COMPOSTING
DescriptionIn the article we have performed a comparative analysis of a traditional system of air supply to the bioreactor during the composting process and the developed system with lateral air supply. We have proven to reduce temperature variation of the substrate as a result of the use of the ventilation system by 35%. During the simulation, equal to 1.0 hour, a ventilation system with side air flow provides a reduction of the accumulated degree of heterogeneity of status parameters of the substrate by 58%. Use of the ventilation system with side air flow reduces the duration of technological cycle of composting 7 %. This article was prepared in the framework of the scientific project 16-48-230441 a(R) "Mathematical modeling of the processes occurring in the automated installation for year-round production of organic fertilizers in the conditions of the Krasnodar region", financed by RFBR and administration of the Krasnodar region
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Description
We have presented a table of analogues of mechanical and electrical quantities of a thermal power plant, which shows the relation between the useful power of the engine and mechanical efficiency, as well as the relationship between engine parameters and regime of its operation; we have also developed an electro-mechanical analogy, which helped to get the expressions linking the useful engine power with shaft speed, engine performance, coefficient of mechanical resistance and mechanical efficiency with speed, coefficient of drag and engine performance. Similar expressions were obtained for the relations of these variables with other sets of parameters. The article also shows corresponding graphs. The expressions for the maximum net power and corresponding speed of rotation was found. Thus, the efficiency isЅ. It is shown that in larger (compared with the extreme) speed, the mode is less efficient than with the smaller, for the same useful power. A method is presented to measure the important characteristics of the finished engine – motor operation and its rotational drag coefficient used in the resulting expressions
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ANALYSIS OF QUALITY INDICATORS OF AUTOMATIC CONTROL SYSTEMS WITH NONLINEAR APPROXIMATION CONTROL LAW
DescriptionThe subject of research of this work was the study of the quality of control processes in a nonlinear automatic control system with an approximating the control law. In the known published works there are no results of such studies, which makes it difficult to synthesis a nonlinear control system for multimode objects in applied biotechnology, including technological objects of the agro-industrial complex. A comparative analysis of the quality of regulation in the transient and steady-state regimes is carried out. It is shown that the approximation method used for the synthesis of the nonlinear control law provides a linear dependencies in steady-state and close to them modes in combination with relay modes in transient regimes, which is a positive factor for improving the quality of regulation in multimode control systems. It does not necessary to determine the moments of switching the dependencies in the control law when changing modes
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PARAMETRIC IDENTIFICATION OF THE PROCESS OF DRYING CORRUGATED BOARD
DescriptionThe article identifies the unknown parameters of the transfer functions of governing and operating channels of the control object. To do this, we have carried out processing of results of experiments. It is shown that there is not only dynamic but also static nonlinearity of the control object, expressed in physically less persistence processes increase the pressure by increasing the opening of the steam regulating valve compared with the opposite processes
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Description
The work is done in scientific and practical directions for minimization of power losses in transmission of electricity to local distribution networks between the actors of the energy (producers and consumers) of energy-saving technologies focused on technological activities such as modernization and reconstruction of networks. Quite often in various circuits of power systems, it is advisable to transfer energy and its power through intermediate (transit) nodes. Structural changes in the electricity sector, at present, are mainly associated with the introduction of market relations between the subjects of energy exchange; therefore, in this work special attention is paid to the problem of calculating the power losses, as it is nonlinearly dependent on the power at the nodes and branches of a network. It should be noted that the nodes in problems transit capacity could be both sources and consumers. The latter necessitated the need for search of possible ways to reduce transportation losses of energy due to both the improvement and optimization of distribution networks and through the use of intermediate transit nodes. It follows that the transportation problem in this formulation is more General and expands the possibilities of optimization of power losses for the local subsystems of the energy clusters. The work is composed of the transport matrix for solving problems transit capacity, where the algorithm taking into account the distinctive features of which consist in the use of continuous numbering of sources and consumers in the matrix, and any node can be a transit country. The transit capacity ii-th node Zii=0, and the dimension of the matrix in contrast to the previously considered tasks has (n+m) (n+m) and it remains square as all the transport problems of linear programming. Transit variables Xii are included in the solution of the problem with a minus sign, and all transit variables are considered basic. From the above example in the work of a number of branches of a network is minimal, which significantly reduces the cost of building and maintaining the network, and the solver minimizes the power loss between the subjects of energy exchange and, as a result to savings from the standpoint of cost of construction of the network and the management of overflows of energy in it
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THE ISSUE SEARCH FOR THE BEST METHODS OF SELECTING THE OPTIMAL POLICY REPLACEMENT VEHICLE FLEET
DescriptionThis article analyzes the best practices of choosing the optimal policy for replacement of vehicle fleet. The problem of replacement equipment was revealed. For each of these methods we gave objective function, constraints. We have found the best method of optimal plan of replacing the vehicle fleet in the company, allowing us to obtain accurate, economically viable new equipment purchase plan during a certain period. We have selected a number of important factors that influence the choice of payment method replacement policy and built PivotTable methods and factors. The selected as part of the research methodology will significantly reduce the labor and time, which will lead to an increase in productivity of the enterprise as a whole. The article gives a practical justification for the need to address the problem of choosing the optimal policy of replacing the vehicle fleet
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06.00.00 Agricultural sciences
DescriptionImproving the quality of Russian cognac is of great national importance. It should be noted that about 80% of Russian foreign brandies made from aged cognac distillates. To obtain high-quality products necessary technical-chemical control of production starting from the vine and the conditions of its growth. For a comprehensive evaluation of the totality of important factors: climate, relief, soil and variety. It is important to add that this grading must be accompanied by the release of environmental macro zones with viticulture specialization. In this regard, there has been conducted a soil-cartographic survey of lands of ACE "Fanagoria" in the Temryuk district of the Krasnodar region. Evaluation took place in view of all 4 factors, notably the soil factor; and the content of lime in the soil and the degree of salinity of soils. Soil analyzes were carried out in FGBNU Anapa ZOSViV SKZNIISiV using the latest equipment generally accepted methods for determining indicators of soil characteristics. The purpose of the research - to give a detailed description of the survey area, as well as highlight the boundaries of environmental macro zones for the cultivation of grapes brandy. During the research, it was found that for the selection and evaluation of raw material zones for brandy production we must take into account soil and climatic optimum performance to get quality brandy raw materials
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Description
At present, the state management of labor protection in Russia adheres to the goals of harmonizing the domestic legislation with the best world practices in this field, eliminating internal contradictions in legislation and building an active management system for labor protection provided that a «favorable climate» for the conduct of business activities is provided. The regulatory and legal state regulation of labor protection forms the basis for the development and implementation of a set of measures to create conditions for maximum protection of life and health of workers. The authors consider the modern legal framework and standards in the field of management of labor protection in the organization. Reflects the changes that have occurred in the Russian labor legislation regarding the employer's duty to create and maintain a labor protection management system. The aspects of introduction of the health and safety management system are considered taking into account the requirements of the draft international standard ISO/DIS 45001 «Occupational health and safety management systems - Requirements with guidance for use». It is shown that one of the modern directions of standardization in the field of labor protection is the development of risk management and an analysis of foreign practice of legal regulation of issues in the field of occupational safety. The article is intended for specialists in documenting processes carried out implementation, operation and maintenance of a health and safety system, and on students of higher education institutions and teaching staff
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CONSTRUCTING A MATHEMATICAL MODEL OF PRICING FOR REAL ESTATE IN KRASNODAR
DescriptionThis study proposes a method of determining the cost of 1 sq. m. apartment on the example of Krasnodar, which is especially important in connection with the necessity of reliable and valid assessment of the property value in a modern market economy. We have performed an analysis of data on apartments in Krasnodar from the site of the Regional Energy Commission - prices and tariffs department of the Krasnodar region. We have also had an exploratory analysis of available data on the subject of emissions and insignificant data (by constructing line graphs and scatter plots); we have also checked for possible dependencies between observations and between variables (built correlation matrix). We have selected variables is linear, the regression model for the variable "cost of 1 sq. m the total area, ths. rub. "(multiple regression). Using regression analysis as a method of mathematical statistics we have revealed a form of analytical dependence of the result of the predictor variables and the degree of this dependence