Krasnodar Higher Military Aviation School named after A.K. Serov
Author list of organization
List of articles written by the authors of the organization
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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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05.13.10 Management in social and economic systems
Description
The article considers the most used methods and means of knowledge extraction taking into account the quality assessment of models in decision support systems. In scientific and practical terms, the possibilities of joint effective use of expert systems, data mining (IAD) and machine logical inference (MLV), which provides deeper data processing, taking into account the significant differences between databases (DB) and knowledge bases (BZ). DB is a unit of information unrelated to each other information, while BZ – not only related to each other, but also with the concepts of the world, which makes it possible to solve complex multi-criteria problems in various subject areas. Currently, increasing attention is paid to non-network technologies that have the ability to simulate nonlinear processes, work with noisy data, as well as the ability to learn and self-study, extracting essential features from the incoming information. At the same time, the integration of neural network technologies and artificial intelligence models into a single hybrid system together with the methods of logical inference in the form of a hierarchical sequence of the "If-then" rules structure significantly improves the understanding of the studied process and the quality of presentation of the result. Nevertheless, these methods and means of knowledge extraction are insufficient if the fuzzy linguistic inference mechanism is not used. The basic characteristic of fuzzy sets is the membership function, which is a generalized characteristic of a normal set. To set this feature, we use three types of shapes – triangular, trapezoidal and Gaussian type and two main procedures – phasefication and de-phaseification which is considered by the example of the method of Mamdani. Along with the stated most promising direction in this area is the adaptive gain algorithm called AdaBoost, where the limitation of the gain due to the filtering is to apply the subsampling circuit which has the normal contour of batch training, reusable training data. This provides an opportunity to work with weak models, and in the conditions of hybridization causes efficiency increase, strengthens the classifiers united in the "Committee". Each next set of classifiers is built on objects incorrectly classified by previous sets. AdaBoost is sensitive to data noise and emissions and is less susceptible to retraining, which can significantly reduce the number of examples and obtain better output in the DSS
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Description
The work is done in a scientific and practical ways to minimize power losses in the transmission of electricity in the interregional distribution networks from the sources to the consumer by the use of tasks, ensuring the gradual improvement in the support program, not only from the standpoint of the efficiency of reduction of transported power loss, but also due to a significant decrease the complexity of the calculations. The resulting shortage of electricity power associated with its transfer to the electricity networks, has demanded the need to find possible ways of reducing the value of electricity losses during transportation, both by improving and by optimizing distribution net-works schemes. Consolidation into a single set of electrical equipment, called the power cluster is connected to the sources of power and energy consumption, make better use of new principles of control technology and the transmission of electricity, on the basis of an automated monitoring system, ensuring the redistribution of energy flows and optimize them. The process of electric power transmission and reduction in electric power loss can be considered on the basis of linear programming problems, and their modification in the form of a transportation problem, and as a result, the transport matrix. On this basis, manipulating the data table, we can find acceptable solutions, well and then determine the best of them. As examples, this work has carried out the study on the basis of the three methods - "northwest corner", the method of minimum unit cost of electricity transport, as well as the method of the potential. The use of these three methods yielded acceptable solutions, to identify the most appropriate for the number of steps carried out at the decision, to reveal that the winner is the potential cost method
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SOURCES OF ELECTRICAL ENERGY OF AIRCRAFT ELECTRIC POWER SUPPLY SYSTEMS: CONDITION AND PERSPECTIVES
Description
According to its operating principles, generators of aircraft electric power supply systems do not differ from the similar generators of transporting and stationary systems, but have range of peculiarities: low weight and dimensions, high density of armature current, compulsory cooling (air and liquid), high frequency of rotor spinning. The article considers main requirements, imposed to generators of flight vehicle and the construction peculiarities and main physical and operational characteristics of generators applied in modern flight vehicles. It is suggested to use noncontact electrical machines as sources of electrical energy in the aircraft electric power supply systems: synchronous generators with impulses from permanent magnets and asynchronous generators with capacitive impulse. To improve physical and operational characteristics of generators and aircraft electric power supply systems it is suggested to refuse from permanent frequency spinning drivers which have low converters as stabilizer of voltage and frequency current of electrical energy source. The peculiarities of its operation are considered, its advantages and disadvantages. It is possible to improve characteristics of aircraft electric power supply systems by means of study of the electromagnetic compatibility of the main functional system elements and by means of application of non-contact electrical devices, applied in the guard and control systems, made on the basis of power and electronic devices
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Description
The work is scientific and practical in nature, same as the discussed process of optimization of power losses in power networks based on the use of the transportation problem, namely the rules of the minimum element of the transport matrix, which is a valid solution. The mechanism of the improvement of the obtained feasible solutions to the tasks focuses on using the potential method, assigning each row and column of the matrix their corresponding potential. Using a basic variable and manipulating the elements of the transport matrix according to a specific algorithm, we implement the construction of a new support plan. Based on the plan and its acyclic, we build two cycles and determine the values of the estimates between direct and indirect transportation costs per unit of output. The resulting algorithm makes it easy to program all computational operations and quickly obtain the result of the optimization of power losses in the design of the electricity network, thereby reducing the economic and technological costs. As a result of joint use of transportation problems and potential method, we could find the optimal solution based on improved solutions more efficiently, and a scheme of optimal electric network. As consumers, in practice, there may be urban and agricultural, industrial enterprises, regional and district subordination, including industrial, agricultural and individual customers
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TO THE APPLICATION OF THE SEVEN TOOLS OF QUALITY CONTROL IN HIGHER MILITARY EDUCATIONAL INSTITUTIONS
Description
The article notes the importance of identifying and taking into account factors affecting the quality of the educational process. To solve these problems the collection, processing and analysis of various data are required. In higher educational institutions, it can be achieved reasonably and conveniently using the application of "seven tools of quality control". Differences between civil and military institutions of higher learning determine not only the features of the educational process, methods for achieving quality of teaching, but also the specificity of the "quality" understanding. This article discusses and explains the use of three of the seven tools of quality education control in the higher military educational institutions. According to the authors, the specificity of these institutions is more close collaboration between the processes of the quality management system (QMS) in comparison with civilian educational institutions. In military academies when the causes of nonconformities in the educational process are eliminated, the processes of the cadets’ "second half of the day" are simultaneously improving. In this regard, the scheme of processes, process maps and other documents of the QMS of the military institution will be significantly different from similar documents of the civil. The forms of checklists proposed in the article, the methods of applying the Pareto and Ishikawa diagrams are of an applied nature
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05.20.01 Technologies and means of mechanization of agriculture (technical sciences)
Description
The article considers a kinematic analysis of the leaves distribution mechanism in the device for placing the tobacco leaves into container using analytic method. These researches allow defining optimal geometric parameters of this device theoretically
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MODELING THREADS AND THREADED CONNECTIONS IN THE SYSTEM OF THE AUTOMATED DESIGNING
Description
The work was carried out not only in the scientific, but also in practical directions, the key part of which was the modeling of the system. Consideration of the presented modeling processes occurred on the basis of the delivered pedagogical experiment associated with the introduction in the discipline "Engineering Graphics" of a new tool for the military educational institution to obtain the final graphic design document. The purpose of the experiment included a comparative analysis of modeling tools (manual and machine) and their impact on the production of the final product (drawing). As a tool, the computer-aided design system Кompas-3D was used. The presented research was worked out in practical classes of the specified discipline, the theme of one of them was "Image of thread and threaded connections". With the help of the graphic editor Compass-3D, a model of the shaft and bushing with the specified thread profile was obtained, as well as the assembly unit based on them. The entire way of obtaining the above objects for convenience and ease of perception has been broken down into certain stages. The results of the pedagogical experiment were very satisfactory; the goal of the practical training was fully achieved
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PRIORITY DIRECTIONS OF INCREASE OF THE EFFICIENCY OF INVESTMENT ACTIVITY OF HEALTH CARE INSTITUTIONS
Description
This article aims to review priority directions of increasing the efficiency of investment activity of health care institutions. As health plays an important role in the economy of any country, it is necessary to improve its efficiency by investing in its development. Additional funding, investment in health will significantly change the quality of provision of medical organizations, to develop new programmes, able to solve various problems existing in the health care industry of the Russian Federation. The priority direction to improve the efficiency of investment activities of MBHI CCCH No. 1 is opening within the healthcare facilities pharmacies called "Land of pills". This article describes technical, economic and financial feasibility study of business plan to open this pharmacy
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Description
The article examines different aspects of preparing qualified workforce for higher-technology industry. The importance of this issue is centered on accomplishing priority projects in aviation, electronics, defense industries, etc. The main goal of preparing a workforce today is to increase the quality of specialists, not their quantity. This cannot be achieved without a development and implementation of effective management systems that are based on TQM principles. The article proposes main events geared at achieving the goal of developing potentials of the industry workforce. It is noted that the goal of the development of effective infrastructure that will supply staff to higher technology sector cannot be achieved within the limitations of a single given institution, it needs participation and consolidation of efforts of multiple participants. The article examines the main issues of modern regional multi-profile universities, which must become the main link in the system of “Education – science – production” to ensure workforce training for advanced development industries in the region, employ hands on research jointly with the facilities and seamlessly facilitate the development of the infrastructure for effective commercialization of innovations. The article proposes methods of developing a workforce potential on the grounds of regional multi-faceted universities as the main element of infrastructure of workforce supply of the higher- technology sectors of the industry. The authors of the article determine, they believe, the most promising forms of symbiosis between the educational and industry establishments
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