Статьи журнала - Вестник Южно-Уральского государственного университета. Серия: Компьютерные технологии, управление, радиоэлектроника
Все статьи: 1048
Evaluation and research experience of the operational control of Magnitogorsk heat supply system
Статья научная
The article considers a number of operational control aspects of Magnitogorsk city heat supply system. The development of the industrial city’s heat supply system, as well as its operational control, updating and restructuring are evaluated both in their own scope and in the advancement of the whole energy generation in Russia. The results of the analytic and applied research of the operational control of the heat supply system are displayed. The results obtained can be assessed in the operational control adjustment of the heat supply system of the Magnitogorsk city and PJSC “Magnitogorsk Iron and Steel Works”, as well as in its further development and automation.
Бесплатно
Evaluation of business and IT strategic alignment maturity in Russian companies
Краткое сообщение
Recently information technologies have become strategically important for businesses. It can be considered as company’s competitive advantage on global market or considerable provider of internal business processes’ efficiency. Although, “unhealthy” cooperation between corporate IT-department and its top-management may lead to some serious problems for a company. In the 1990s a term strategic alignment which stands for beneficial cooperation between Business and IT within one company was introduced. Before any changes such as implementation of new information system or business intelligence solution, business processes’ or organizational structure reengineering, it is vitally important to understand the current condition of company’s strategic alignment or literally the maturity level of this very process.
Бесплатно
Evaluation of business and it strategic alignment maturity in Russian companies
Краткое сообщение
Recently information technologies (IT) have become strategically important for businesses. It can be considered as company’s competitive advantage on global market or considerable provider of internal business processes’ efficiency. Although, “unhealthy” cooperation between corporate IT-department and its top-management may lead to some serious problems for a company. In the 1990s a term strategic alignment which stands for beneficial cooperation between Business and IT within one company was introduced. Before any changes such as implementation of new information system or business intelligence solution, business processes’ or organizational structure reengineering, it is vitally important to understand the current condition of company’s strategic alignment or literally the maturity level of this very process.
Бесплатно
Evaluation of the radiation patterns of aircraft slot antennas using iterative techniques
Статья научная
The rigorous electromagnetic formulation of the problem to define the pattern of slot antennas mounted on aircraft is used Fredholm’s integral equation of II kind. For calculation of the slot antenna far-field pattern on perpendicular plane to aircraft axis is used an asymptotic correspondence of 3D and 2D problems in antenna engineering. We assume that slot antenna axis is parallel to aircraft axis. It is shown such correspondence is increasing the abilities of modeling the radiation pattern of slot antennas and arrays. High-precision Gauss quadrature formulas is used for matrix elements calculation. Turn from direct numerical tecniques of the integral equation solving to iterative procedures requires preliminary analysis of the using methods, especially for convergence of large-scale problems. On the base of multiple numerical experience for solving some widely-known test poblems we defined the most methods for solving such problems - conjugate gradients squared method and generalized minimum residual method. Numerical result shows that patterns of the aircraft slot antennas have a large number of directional s.
Бесплатно
Existential issues of committee constructions. Part I
Краткое сообщение
The term “existence” is important in philosophy, mathematics and logic. Various approaches to logic research of existential expressions are possible. The question of relation of terms to the objects designated by them is important. These problems were considered by Aristotle in the names theory developed by him. Scholastic … of suppositions regard this problem as well. From the middle of the 19th century these problems were studied by J. Mill, W. Jevons, F. Brentano, A. Meinong, E. Husserl. Mill made a significant statement: names only have a task of naming something but to express that this something exists the predicate “to exist” is needed. Nevertheless F. Frege, B. Russell and R. Carnap believed that the expression of the language should be considered as a name only when it designates a real existing object, then the predicate of existence is unnecessary. We believe that everything that we can think about or see or feel exists, whatever it is, though it exists in different meanings and in different degrees. The kinds of existence need to be differentiated. There is a round square even as an idea. But there exists a bridge of ideas forming a concept of a round square, for example, as a dynamic structure transforming with the time in topology or as a set of figures, some of them being similar to a square while others - to a circle. There exists x: x > 0, x function show_abstract() { $('#abstract1').hide(); $('#abstract2').show(); $('#abstract_expand').hide(); }
Бесплатно
Existential issues of committee constructions. Part II
Краткое сообщение
The question of the existence of a committee of a system of linear inequalities under additional conditions is considered. The most part of the article is devoted to the results of the research conducted by Vl.D. Mazurov and M.Y. Khachai on the committees of systems of linear inequalities. The given article represents the continuation of the results. The question of the proofs of the results in infinite-dimensional case is answered. This is the most difficult part of the problem. The committee of a system of algebraic inequalities is an ordered set of decision rules on the basis of which the final procedure of decision making is formed. The problem of committee construction and their application in economics and technics is topical since their initial formulation often contains controversies and non-formalized parts. Therein the system of homogeneous linear inequalities with an infinite set of indices is considered. Solution set can be empty as well. The conditions are proved under which there exist a committee of the system. As it follows from the theorem when the number of limit points in the left parts of inequalities is finite then the problem is reduced to that of construction of mutually independent committees. The example is given. At present factor analysis with the similar features is becoming increasingly important, the given mathematical apparatus can be applied to them as well. Further on, these methods are applied in psychology including a depth one the research of which was initiated by Carl Jung.
Бесплатно
Experience of multi-layer neural network application for empirical regularities identification
Краткое сообщение
In this article, the recognition method is applied to the comparison of industrial enterprises. At the same time, we had to consider the methods of taking into account non-formalized factors. The method can be used for objective ranking of enterprises. While researching the topic, a neural expert system was developed, and it was used by specialists of the regional government to predict the dynamics of industry. In view of the complexity of relations, conflicting non-equality systems were arising. We were resolving them by means of committee method. The effect of managing the situation by varying the values of factors by tracking them on a computer model, made it possible to adjust the model as a means of parallelizing the committee constructions. They act directly in multi-layer neural networks.
Бесплатно
Краткое сообщение
Results of trial operation of system of heat supply of the residential building with the optimized processes of regulation of temperature of the heat carrier are given in article. The actual indicators of volumes of the consumed gas for several months 2015 and values of temperature of external air are analyzed. It is shown that “factory” settings of controllers don't ensure effective functioning, especially at temperatures of external air close to 0 °С. The data, which showed that the optimization of processes in heating systems developed techniques for increasing their efficiency by 10-15 %. On the basis of pilot studies in a suburban boiler room with considerable losses in a heating main, the method of increase in their energy efficiency by increase in giving of the heat carrier is offered. The method is realized by means of the converter of frequency installed for control of the network pump. The experiments have confirmed efficiency of the offer.
Бесплатно
Federated learning for vision-based obstacle avoidance in mobile robots
Статья научная
Federated learning (FL) is a machine learning approach that allows multiple devices or systems to train a model collaboratively, without exchanging their data. This is particularly useful for autonomous mobile robots, as it allows them to train models customized to their specific environment and tasks, while keeping the data they collect private. Research Objective to train a model to recognize and classify different types of objects, or to navigate around obstacles in its environment. Materials and methods we used FL to train models for a variety of tasks, such as object recognition, obstacle avoidance, localization, and path planning by an autonomous mobile robot operating in a warehouse FL. We equipped the robot with sensors and a processor to collect data and perform machine learning tasks. The robot must communicate with a central server or cloud platform that coordinates the training process and collects model updates from different devices. We trained a neural network (CNN) and used a PID algorithm to generate a control signal that adjusts the position or other variable of the system based on the difference between the desired and actual values, using the relative, integrative and derivative terms to achieve the desired performance. Results through careful design and execution, there are several challenges to implementing FL in autonomous mobile robots, including the need to ensure data privacy and security, and the need to manage communications and the computational resources needed to train the model. Conclusion. We conclude that FL enables autonomous mobile robots to continuously improve their performance and adapt to changing environments and potentially improve the performance of vision-based obstacle avoidance strategies and enable them to learn and adapt more quickly and effectively, leading to more robust and autonomous systems.
Бесплатно
Formation of level agenda programs competency of the personnel of the organization
Статья научная
At present, when the requirements to the quality of education are significantly increased, there is a need to search for new methods to increase the competence of the teaching staff of educational institutions. Competences that include a body of knowledge, skills, abilities, applied efforts and behavior stereotypes are characteristics that are necessary for a person to succeed, and competence means the person's own competence. Competence is a versatile, diverse and systemic characteristic of the teacher. The current multidimensional approach to competence offers more opportunities for integrating business requirements, human resource management technologies and the educational process. In this regard, it is important to develop a model support for the process of assessing and improving the level of competence of teaching staff. The article considers the task of increasing the level of competence of the personnel of the organization. The approach is based on the technology of developing development management systems (DMS technology), created in the Institute of Control Sciences of the Russian Academy of Sciences. The main stages of the DMS technology are considered as applied to the task of increasing the level of competence of the organization, such as a comprehensive assessment of the level of competence of the organization, assessing the potential for increasing the level of competence of personnel, developing a program to improve the level of competence.
Бесплатно
Formation of modern algorithm of territorial development management
Краткое сообщение
Management of modern territorial development is carried out using a wide range of different procedures for the preparation and adoption of management decisions in various fields of activity. Only correct decisions and actions that stimulate the socio-economic development of territories can ensure sustainable and balanced development of the economy of the Russian Federation. Consequently, a significant part of the procedures for the preparation and adoption of management decisions in territorial administration requires the mandatory accounting of information about the object of management in order to achieve the most effective management potential. Unfortunately, today in the Russian Federation, the legislation does not define specific methods and models to ensure sustainable planning and management of populated areas and to conduct a set of measures aimed at the socio-economic development of territories. This work is the continuation of work on the creation of a modern methodology for managing the development of territories and is devoted to a brief description of the generated algorithm for managing the development of territories. The study of the developed algorithm was carried out with the help of the analysis of the emerging situations of territorial management. The set of normative documents and scientific research on the territorial and socio-economic development of territories is considered. A modern algorithm of territorial development management and the block diagram of its implementation in managing the development of territories within the framework of a constituent entity of the Russian Federation are demonstrated. A brief description of the flowcharts for each block is given. The conclusions are presented on the results of the analysis of the considered algorithm for managing territorial development. The result of this study will be a set of measures to ensure the sustainable implementation of the goals of socio-economic development of the territory.
Бесплатно
General approaches to dynamic measurements error correction based on the sensor model
Статья научная
The subject of the research is measuring systems and primary measuring transducers operating in a dynamic mode. It is aimed at the reduction of a dynamic measurements error due to the primary measuring transducer inertia and random high-frequency noise at the output. Three general approaches to the dynamic measurements error correction based on the dynamic measuring system structure with a dynamic model of the primary measuring transducer (sensor) are considered. The first approach implements the adaptive control of measuring system parameters method, the second one is based on the method of sliding mode control in the dynamic measuring systems, and the third one uses the neural network control method. The approaches mentioned above are based on the principles of modern and classical theory of automatic control and provide the dynamic measurements error correction by the sensor input signal recovery. In the classical problem statement this requires solution to the convolution integral equation and usage of the inverse Fourier transformation.
Бесплатно
Global exponential stability for nonlinear delay differential systems
Краткое сообщение
We give a review on recent results for global stability for nonlinear functional differential equations. Such equations include delay differential equations, integro-differential equations and equations with distributed delay and are applied as mathematical models in Population Dynamics and other sciences. We also consider methods used to study global stability: constructing of Lyapunov functional, applications of special matrices such as M-matrix or special matrix functions such as matrix measure, method of matrix inequalities, which is very popular in papers on Control Theory, fixed point approach and using a notion of nonlinear Volterra operator.
Бесплатно
IDEF0-diagram into database conversion approach development
Краткое сообщение
An approach was developed to the conversion IDEF0-diagram, created in the business processes design tool CA ERwin Process Modeler, to database by analysis of *.XML file for task solution of organization business processes modeling within the scope of information system. Due to recognizing names and links between functional blocks, their decompositions and interface connections the analysis of the basic tags of *.XML file was done. Based on the analysis *.XML file database structure is developed, in which all the tables are related by “one-to-many” with a foreign key. Research results display actual tasks for companies. Solving tasks companies can move to a new technological and organizational level and compete more effective in modern economic conditions. Job was done by 05.13.01 specialty - systems analysis, control and information processing (branches).
Бесплатно
Identification of nonlinear systems by using elliptic and loxodromic methods
Краткое сообщение
This article describes the results of using elliptic and loxodromic methods for identification of nonlinear systems with applying of the distributed computing and Acsocad software. Presents the existing methods for identification of objects and systems in the time domain, and also describes standard methods and identification algorithms by using Acsocad. The research of nonlinear objects with two and three unknown parameters are done. For their identification the methods of global minimum search by ellipse and spiral for two-dimensional case and with using ellipsoid and loxodromic curves for three-dimensional case are developed. This article describes the results of researches, which contain the parameters estimation error, standard deviation, the number of performed operations, and also the map of the global minimum search.
Бесплатно
Improvement of the company's electronic archive information system
Статья научная
The documentation archive is an important base of accumulated knowledge and development of a company engaged in project activities. Given that the archive has diverse functions, it is quite difficult to organize clear work on structured storage, ensuring reliability of storage, confidentiality and differentiation of access rights, tracking the history of changes to documents, quick and easy search. Therefore, the article pays particular attention to solving the problem of improving the information system of an electronic archive of an enterprise. To solve the indicated problem, within the framework of this article, the functional requirements to the electronic archive of the enterprise are identified, the compliance of the existing system with the functional requirements is analyzed, measures are proposed to increase the efficiency of managing the electronic archive of documents. Based on the study of the electronic archive system of scientific and technical documentation (STD), the analysis and modeling of the structure of the electronic archive are carried out. The structure of the organizational part of the electronic STD archive, which regulates the life cycle of the document and the technical part responsible for the storage of documentation, is revealed. In order to improve the information system of the electronic archive of the enterprise, the models of business processes “Information Support”, “Management of storage and receipt of information” were built and the effectiveness of the developed models was evaluated. A comparative analysis of typical solutions of the electronic archive system is presented, which includes software products of the electronic archive STD: LOTSMAN: PLM Archive, STOR-M3 and TechnologiCS. As a result of the analysis, the correspondence of typical software products to the constructed business process models according to the required functionality is shown and the optimal system of electronic STD archive for implementation at the enterprise is selected.
Бесплатно
Improving the efficiency of industrial enterprises through the mechanisms of motivation
Краткое сообщение
Any company manages the financial, material and human resources, but human resources mana¬gement is able to ensure that all plans and achieve its objectives. A modern company should develop and update personnel policies, adhering to a system approach. It is important to understand that the need to invest in human resources. Only then the company will take its rightful position in the market, will continue to develop. This thought leads to the realization that human resource management cannot be limited only to administrative activities related with personnel. The article discusses the possibility of increasing the productivity of the personnel by improving the intrinsic motivation and stimulation of employees.
Бесплатно
Incentive systems in project management
Краткое сообщение
Analysis of the current state of project management shows a significant increase in the number of projects implemented in the spheres of construction, public administration, energy, consulting, and digital technologies. Professional project management allows to effectively allocate responsibilities and responsibilities between project participants, save money and time, reduce risks. Understanding the importance of future development, the heads of organizations are increasingly using project management methods to create competitive advantages, and in the applied theory of management of organizational systems, more attention is paid to the teamwork of the organization's personnel. An important task in the management of the project team is the formation of a system of incentives for its participants, whose task is to ensure the implementation of the project on time without additional budget expenditures. In order to maintain the motivation of project team members, individual and unified incentive schemes. The disadvantage of individual incentive systems is, firstly, unequal conditions for encouraging different groups of performers, and secondly, the danger of manipulation, that is, deliberate distortion of information on the amount of work and costs transferred from the members of the project team. In order to exclude distortion of information and reduce tension in the project team, unified incentive schemes apply when the incentive mechanism is the same for all performers. Intermediate position is occupied by the group incentive schemes, when a number of project operations are divided into groups, for executors of each of which a unified incentive system is applied. The article considers jumping unified stimulation systems, and the problem of choosing the optimal group incentive system is solved.
Бесплатно
Статья научная
It is shown that the strengthening of the role of strategic management of industrial enterprises and corporations that has taken place in recent years requires the creation of new developments in the field of both improving the strategies for managing manufacturing companies themselves and the formation of appropriate information and analytical support for the mentioned process. The aim of the work was the need to develop an up-to-date information and analytical support for the strategic management of enterprises in the context of global instability in the world and a tough confrontation between Russia and the West. In this regard, the implementation of effective management of industrial enterprises and corporations is becoming an increasingly difficult task, the solution of which depends on an increasing number of factors, not only direct, but also increasingly significant indirect impact. Materials and methods. The study of the origin, formation and development of ideas of strategic management of industrial enterprises and organizations showed that the implementation of operational and strategic management of enterprises cannot be carried out, as was done in the very recent past, based on the experience of managers and simple unambiguous schemes development of management decisions. Based on the analysis of the development of scientific ideas, foreign and domestic approaches and conceptual provisions for the strategic and operational management of industrial companies and corporations, a set of scientific provisions for the formation of information and analytical support for the development of the strategy of Russian companies, based on the results of practical experience and scientific developments of the authors. Results. The proposed set of scientific provisions for the development of information and analytical support for the strategic management of enterprises in the context of global instability enables the leaders of these enterprises to increase the validity and effectiveness of their activities. Conclusion. Because foreign and domestic experience in managing enterprises and organizations, scientific research on the strategic and tactical management of companies of the past years, by now, has ceased to make it possible to effectively manage the development of companies. The complex of scientific provisions presented in the article and the algorithm of strategic management of industrial enterprises and corporations is a necessary element for improving the quality of strategic management of manufacturing companies in today's extremely tense and unstable conditions for doing business and business in our country.
Бесплатно
Information measuring system for correction of working memory parameters in the learning processes
Статья научная
This paper presents the results of a system analysis of the information-measuring system (IMS) for correction of the working memory parameters of subjects during the learning process, in which the neuroplasticity of the brain is triggered by stimulating the nerve formations of the neck of a spatially distributed field of voltage impulses, the target of stimulation is the cervical ganglia of the sympathetic nervous system, control of functional changes in the body is carried out according to changes in the parameters of the blood supply system, and psychometric tests are used to assess working memory parameters. Aim. Development of IMS, using neuroelectrostimulation of peripheral nerve formations of the neck for correction of working memory parameters in the learning process. Materials and methods. The study involved 65 subjects, divided by randomization into experimental, control and placebo groups. Working memory parameters were assessed using the dual 2-back test, and the functional state was assessed using heart rate variability (HRV) analysis. Results. The results of the study showed that the proposed structure of the IMS and the method of correction working memory allow to improve the working memory parameters and normalize state of the autonomic nervous system after three correction procedures. The obtained test results practically do not change and are saved after 2 months. Conclusion. IMS, which provides multichannel neuroelectrostimulation of peripheral nerve formations in the neck, is effective for correction of cognitive skills, which is important for solving problems in the field of education.
Бесплатно
