Volume 4 Issue 5
ELECTRONIC NETWORK JOURNAL "RUSSIAN TECHNOLOGICAL JOURNAL"
Volume 4 Issue 5
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MICRO - AND NANOELECTRONICS, PHYSICS OF CONDENSED STATE |
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М.Е. Belkin, |
Abstract At the design stage of radio-electronic means using microwave photonics units, the cosimulation capability in a single CAD tool for the elements of microwave and optical ranges is a vital issue, and it is important to retain the ability to complex nonlinear analysis of the circuits and systems under design. One of the most suitable solution of this complex problem is in using working on symbolic level CAD tool NI AWR Design Environment (AWRDE) from National Instruments, which has extensive built-in library of multi-parametric models for electronic and topological components, functional modules, or system units. Following it, in the paper we offer an upgraded nonlinear physical equivalent-circuit model of the double-sideband optical modulator, fully implemented based on AWRDE Schematic library elements. Developing the model, we proposed for the first time and initially studied by AWRDE a nonlinear physical model of the single-sideband electro-optical modulator, comprising three Mach-Zehnder interferometers. During the simulations, the static and dynamic characteristics of the models in large-signal operation mode are analyzed by transmitting Ku-band microwave signals. Carrying out experimental verification has confirmed the correctness of the developed models. Keywords: microwave photonics, electro-optical modulator, transfer characteristic, CAD NI AWR Design Environment, equivalent-circuit model. |
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O.A. Ruban, |
Abstract In the present study, the degree of relaxation of tension in the barrier layer of heterostructures AlGaN / GaN on the basis of measurements of the capacitance-voltage characteristics GaNHEMT is determined. Samples were grown on Al2O3 substrates by deposition of organometallic compounds from a gaseous phase. In order to conduct capacitance-voltage measurements, dualgate HEMT were created for all these tested HEMT-structures. From the measured capacitancevoltage characteristics, the Pexp polarization value within each HEMT-structure was obtained. By analyzing the capacitance-voltage characteristics, electron traps were found. According to the modified model by Ambacher, spontaneous Psp values and piezoelectric polarization Ppz were calculated. Obtained values Pexp, Psp and Ppz for each HEMT-structure allowed to determine the value of the relaxation degree of tension R in the barrier layer. Thus, the possibility of application of the capacity-voltage characteristics for evaluating the quality of the crystal structure of the barrier layer in the heterostructure AlGaN / GaN is shown. Keywords: nanostructures, gallium nitride, capacitance-voltage characteristics, piezoelectric effect. |
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ANALYTICAL INSTRUMENTATION AND TECHNOLOGY |
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V.N. Serov, |
HIGH-SENSITIVITY MAGNETOMETER BASED ON A MAGNETOELECTRIC SENSOR 25 Abstract A high-sensitivity magnetometer based on new type magnetoelectric sensor was fabricated. The sensor contains a composite structure of ferromagnetic and piezoelectric layers placed inside an electromagnetic coil. Magnetoelectric effect in the structure arises due to combination of magnetostriction of the ferromagnetic layer and piezoelectricity of the piezoelectric layer. Under simultaneous action of pumping magnetic field with frequency f and dc field to be measured, the structure generates voltage harmonics with frequencies f, 2f, 3f. Amplitudes of the 1st and the 3d harmonics are linear functions of H, which is used for measurements. The field, frequency, and amplitude characteristics of the sensor were investigated. The electronics circuits used for signals processing are described. The battery powered proto-type of the magnetometer operates in the 0.1−200 mOe magnetic field range with accuracy of 0.1 mOe. The proposed magnetoelectric magnetometer may compete with fluxgate magne-tometers and find applications in geophysics, navigation, defectoscopy, and medicine.Keywords: magnetometer, magnetic field sensor, magnetoelectric effect, magnetostriction, piezoelectric effect, phase-locking, autonomous measuring devices. |
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V.V. Filinov, |
UNIVERSAL INFORMATION-MEASURING SYSTEM FOR THE STUDY OF MAGNETIC PROPERTIES OF FERROMAGNETIC STEELS 11 AbstractThe article deals with information-measuring system of magnetic noise control stress with the use 3D scanner and advanced microprocessor technology. A block diagram of the device magnetic noise control from signals of Barkhausen jumps and how it works. The possibilities of the system under the control of physical and mechanical properties of steels, for example, measurement plane stress. Keywords:м lmagnetic noise, Barkgauzene effect, coercive force, magnetostriction, information-measuring system. |
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INFORMATION SYSTEM. INFORMATICS. PROBLEMS OF INFORMATION SECURITY |
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M.I. Makarov, |
ROCKET AND SPACE GROUND OPERATION PROVIDED AUTOMATED SYSTEM. DECIDED TASKS AND PROGRESS PERSPECTIVES 11 AbstractPaper analyzes the experience of the A.A. Maksimov Space Systems Research Institute in the development of automated system providing the reliability and safety of the Plesetsk Cosmodrome rocket and space vehicles and ground space infrastructure facilities operation, formulates rational guidelines of further enhancement of the large man-machine systems operation control informational support technology. Paper gives the rough estimate of the benefit gained as the result of new information technologies introduction into the cosmodrome ground space infrastructure facilities operation control practice. Keywords: rocket and space vehicles, ground space infrastructure, automated system, safety of operation, monitoring, adaptability, scalability, mobility. |
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A.Y. Tsunikov |
Abstract The article analyzes the critical quality parameters firmware optoelectronic systems (IPS) to meet the ergonomic requirements for work with computer systems: ISO 9241 - Ergonomics of human-machine interaction; ISO 10075 - Ergonomic principles related to mental workload when dealing with interactive systems; ISO 14915 - Ergonomics software multimedia user interfaces. According to the results of theoretical analysis of the current state of the problem of data processing automation of noisy and distorted IR images revealed that the image processing procedure is an indispensable component of the total signal processing procedure in the chain of data transformations from its registration photodetectors to the presentation to the operator, so the lack of standardized quantitative criterion imaging quality to solve practical problems of modern optoelectronic instrument makes it especially urgent to develop treatment algorithms thermal images with ergonomic requirements for computer systems. Practical recommendations are done to improve the reliability of the interpretation of the information provider, and thus improve the reliability of the situation prediction efficiency and APC information system as a whole. Keywords: ergonomics of human-computer interaction, multimedia user interface, information system efficiency, reliability prognosis of the situation, the accuracy of the information, the accuracy of the interpretation of the information, availability of treatment result for perception, understanding. |
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Krassimir Shishmanov |
FEATURES IN THE DEVELOPMENT OF INFORMATION SYSTEMS TO SMALL BUSINESSES 8 AbstractThe development of information systems for small enterprises despite the objective difficulties and reduced budgets for IT infrastructure requires an in-depth strategic approach. It should include an analysis of the conditions, assessment of the opportunities and a precise selection of the most appropriate hardware and software platforms. They, in turn, must comply with the current trends and allow for a flexible adjustment according to the specific individual requirements. The renovation of the existing information systems and the development of modern integrated ones should not be perceived as a single act, but as a long-term, premediated and planned process. Keywords: information technology, information systems, ERP, CRM, BI, cloud computing, system integration, reengineering. |
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MODERN ELECTRONIC AND TELECOMMUNICATION SYSTEMS |
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W.I. Kaganov, |
SATELLITE RADIO SYSTEM FOR THE REPUBLIC OF CUBA 9 AbstractPrinciples of satellite radio communications system for providing network information "Internet" in any part of the territory of Cuba are discussed. The results of calculation of radio link: a geostationary satellite – ground subscriber with conventional smartphone are discussed. Options phase array antenna placed on a satellite are calculated. Keywords: geostationary satellite, radio, antenna array. |
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ECONOMY OF THE KNOWLEDGE-INTENSIVE AND HI-TECH ENTERPRISES AND PRODUCTIONS |
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I.N. Chernykh |
Abstract The article deals with organizational aspects of management control of the cost centres on the example of a plant for the production of concrete products. In the study reviewed the organizational support of the system of management control by cost centers: the purpose of monitoring, the main objectives and elements of control (control environment, accounting system, control procedures). Presents information base, a list of objects and subjects of management control by cost centers in the organization under study: depending on role in the monitoring process, the level of detail of the responsibilities and range of contacts. In addition to the selection of subjects of management control by cost centers in the work outlines the main principles of management control of the cost centres and the possibility of their use in these parts of the organization. The conduct of preliminary, current and subsequent control by cost centers has a positive impact on the formation of the economic impact, constituting one of the main purposes of the system of internal management control in the organization. The author offers the scheme of the integrated management control of the cost centers of the plant for production of concrete products. Analyzed software management management accounting and control by cost centers in the organization. Keywords: management accounting, management control, cost, responsibility center, cost center, principles of management control methods, management control, data base control. |
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PHILOSOPHICAL FOUNDATIONS OF TECHNOLOGY AND SOCIETY |
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E.V. Bodrova, |
Abstract The article considers the problem of formation of the system of technical education and scientific and technical institutions in the second half of Х1Х – beginning of XX centuries, identified the factors contributing to the specificity and efficiency of this process: the involvement of the scientific community to the definition of the main directions of development of scientific and technical sphere, the development of a General strategy of modernization of the country; the joint efforts of government, scientists and entrepreneurs with the purpose of formation and development of one of the world's best systems engineering education, creating a network of scientific societies and scientific schools of world level, the active promotion of scientific and technical achievements, allowing to involve a significant part of society in modernization processes. Keywords: science and technology policy, modernization, technical education, science and technology institutions. |
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O.A. Volnyakova |
Abstract The problem of correlation between economics and morality is risen in the article. Start of discussion of this problem from philosophical point of view dates from to the turn of XXth century and connected to the names of Russian religious thinkers V.S. Solovyov and S.N. Bulgakov. On the wave of tremendous development of economical theories of XIX century in the spirit of economism one-sided approach to human economical activity was found out in them. Chapters from the book of Russian philosopher V.S. Solovyov "Explanation of kindness" in which he considers economical question from moral point of view are analyzed in the article and S.N. Bulgakov's approach to rendering of political economy is shown. Critics of break of human economical activity and his moral substance is researched in details. Special attention is paid to consideration of human economic relations (work, property, exchange) in their correlation with morality from Solovyov's philosophy of unitotality. The fact that work has dual nature in society is shown : on the one hand it is necessary for satisfying human exigencies, on the other hand it must be directed to commonwealth, in such combination of egoism and altruism the way to building just society is paved. Views of philosopher to the fact that the source of property is work and exchange mustn't become a deceit are notched. The main philosophical conclusion is in the necessity of understanding of dialectical connection of material, economical and moral sides of human activity. The importance and actuality of given problem is shown. Keywords: V.S. Solovyov, S.N. Bulgakov, economics, morality, kindness, work, property, exchange. |
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