Summaries of the Issue
OPTICAL AND OPTICAL ELECTRONIC SYSTEMS. OPTICAL TECHNOLOGIES
OPTICAL ELECTRONIC COMPLEX OF HEIGHTENED PRODUCTIVITY Demin Anatoly V., Andrey Denisov, Ivan Pearl, Anastasia Tretyakova
Optical electronic complex of remote sounding of the Earth with heightened productivity and efficiency is described.
APPLICATION POSSIBILITY ANALYSIS OF MULTISPECTRAL METHOD FOR AIR CHANNEL INFLUENCE MINIMIZATION IN OPTICAL-ELECTRONIC TARGET ATTITUDE CONTROL SYSTEMS Oleg Lashmanov, Anton Pantyushin, Alexander Timofeev, Yaryshev Sergey Nikolaevich
Availabilities of the active target image coordinate estimation in blue, green and red spectral regions are considered. The receiver is constructed according to the Bayer filter mosaic.
SPECTRAL SENSITIVITY CORRECTION OF THE UV RADIOMETER BY SPECTRAL PHOTOMETRIC METHOD Vladimir Antonov, Gennady Ishanin
The article deals with the measuring possibility of spectral zonal energy efficient values in the ultraviolet region, based on the spectral composition measuring of the investigated source with subsequent computer processing of information. The traditional solution of these problems is associated with the creation of a broad range of spectral zonal devices having individual spectral sensitivity characteristics. Spectral sensitivity correction of photo detectors used in such devices is often not a simple task, which leads to the unjustified rise in prices for the instrument as a whole. The proposed method of multispectral irradiance determination of the objects in any given spectrum region seems to be promising.
OPTICAL ELECTRONIC INFORMATION PROCESSING IN PNEUMATIC OPTICAL TONOMETER Konstantin Kyznetsov, Nagibin Yuri T., Trofimov Vladimir A., Alekseev Sergey A.
Optical electronic information processing method for pneumatic optical non-invasive intraocular pressure measurement is developed. Limitation analysis for measuring scheme realization during harmonic deformation of eye cornea is done.
PHOTONICS AND OPTICAL INFORMATICS
RAYLEIGH-TAYLOR INSTABILITY OF A DUSTY GAS Roman Savelyev, Rosanov Nikolay Nikolaevich, George Sochilin, Sergey A. Chivilikhin
Interface instability of «gas+dust» system was explored. A numerical solution of the dispersion equation, connecting the perturbation wave numbers and its growth rates was found. It was shown that dust density decreasing, as well as the size of the dust particles increasing, reduces the rate of the instability evolution. The gas viscosity was shown to decrease the rate of perturbation growth with large wave numbers.
LOW-TEMPERATURE MEASUREMENTS OF UP-CONVERSION LUMINESCENCE IN NANOSTRUCTURED DOPED GLASS-CERAMICS Vladimir A. Aseev, Kolobkova Elena V, Nekrasova Yana Andreevna
The luminescent properties of lead-fluorosilicate nanostructured glass-ceramics doped with ytterbium and erbium ions have been investigated. Luminescence spectra in visible and near infrared range at room (300 K) and low (77 K) temperatures have been measured at 975 nm wave length pumping. The glass-ceramics luminescence spectra dependences on the secondary heat treatment time and sample temperature have been obtained.
NONLINEAR OPTICAL RESPONSE OF POTASSIUM-ALUMINUM-BORATE GLASSES WITH NANOCRYSTALS OF COPPER HALIDES Alexander Kim, Nikonorov Nikolay V. , Sidorov Alexander Ivanvich, Victor Tsekhomsky
An experimental study of nonlinear optical properties of potassium- aluminum-borate glasses with nanocrystals of CuCl and CuBr in the nanosecond range at 532 nm wavelength is done. It is shown that the nonlinear optical response is manifested as a loss of radiation, has a threshold and occurs in two ranges of laser pulse energy: 10-10…10-8 J and 10-4…10-2J. A comparison of the nonlinear characteristics of glasses with nanocrystals CuCl, CuBr is given and models explaining the observed effects are proposed.
KINETICS OF CHEMICAL ETCHING OF PHOTO-THERMO-REFRACTIVE GLASS AND NANOGLASS CERAMICS Ignatiev Alexander I , Nikonorov Nikolay V. , Marina Sorokina
Etching kinetics of initial photo-thermo-refractive glass and nanoglass ceramics in HF solutions at various concentrations and temperatures has been investigated for the first time. It has been shown that the etching rateof the nanoglass ceramics is ten times higher than of the glass. Future prospects of the PTR glass and chemical etching technology for fabrication of photonics and mechatronics elements have been discussed.
OPTIMIZATION OF QUADROTREE IMAGE SEGMENTATION BASED ON MINIMUM DESCRIPTION LENGTH CRITERION IN FRACTAL COMPRESSION Vadim Okunev, Potapov Alexey Sergeevich
Efficiency of quadrotree image segmentation in fractal compression methods is investigated. Information criterion of rang blocks division into sub-blocks is introduced based on the minimum description length principle. It is shown that the modified method of quadrotree segmentation results in simultaneous increase of compression ratio and quality of reconstructed image in comparison with conventional methods based on rootmean-square error threshold criterion.
ANALYSIS OF EXTRACTION METHODS FOR MOVING OBJECTS ON VIDEO SEQUENCES WITH NOISE Vadim Kozlov, Potapov Alexey Sergeevich
The article provides an overview of the most commonly used extraction methods for moving objects in relation to video recordings obtained with ordinary household video cameras and containing noise. Main processing problems of such video sequences are revealed, and ways of solving them and improving the overall quality of the result are suggested.
ANALYSIS AND SYNTHESIS OF COMPLEX SYSTEMS
EXPONENTIAL STABILITY OF CONTINUOUS DYNAMIC SYSTEMS Bystrov Sergey V., Grigoriev Valeriy V., Yevgeniy Rabysh, Nikolay Cherevko
Analytical algorithm of optimal controllers synthesis is considered providing exponential stability to the synthesized continuous nonstationary dynamic system, that is the possibility to set the desirable transition time.
SPEED AND TORQUE CONTROL OF GATE MOTOR IN VEHICLE DRIVE GEAR Anastasia Gromysheva, Igor Ovchinnikov, Egorov Alexey V
The article deals with oscillatory processes for speed and current, originating from relay control of gate motor with linear feedback for rotor speed and stator current. The ability of smooth management of the average speed and torque in the time of high rigidity of artificial mechanical characteristics and current limit in the transient regimes is shown.
UNSTEADY HEAT MEASUREMENT SENSORS AND THEIR MATHEMATICAL MODELS Pilipenko Nikolay V.
The article deals with the main directions and objects of applied heat flux measurements; mathematical models of unsteady heat flux transducers, widely tested in experimental studies of power-intensive processes, are given.
MECHANICS AND MECHATRONICS
DYNAMIC CHARACTERISTICS OF SPINDLE HYDROSTATIC BEARINGS USING DIAPHRAGM REGULATORS Prokopenko Vyacheslav A, Chernov Ivan A.
The dynamic behavior of spindle hydrostatic bearings is considered. Mathematical model of hydrostatic bearing is given. Possibilities of regulators implementation are considered as one of the effective ways to improve the vibration stability. Sampling method is suggested to choose parameters of correcting RC-circuits. Transient processes at different operating regimes are calculated, corresponding linear-frequency characteristics are made.
SPACESHIP ROTATORY MOVEMENT CONTROL IN VIEW OF VARIABLE MASS DISTRIBUTION Vladimir Korolev, Raisa Kravchuk
The article deals with the problem of rotatory movement control relative to mechanical system center of masses consisting of the main body and other bodies or particles which can move relatively the main body or change the mass, defining variable mass distribution and additional change of the kinetic moment. The equations of dynamics are received, which can be investigated by analytical or numerical methods.
THE EVALUATION ALGORITHM OF THE EFFICIENT GROUPING OF THE LOW-ORBIT SATELLITES FOR THE GROUND OBJECTS MONITORING Anatoliy Pikul, Khegai Dmitry Klimovich, Alexander Shpak
The article is devoted to the algorithm for evaluating of the information resources of the space system in its various orbital grouping in view of its artificial Earth satellites specifications and monitoring objects.
INSTRUMENT-MAKING TECHNIQUE. ORGANIZATION OF PRODUCTION
SYSTEM INTEGRATION IN MODELING AND MANUFACTURING OF PRODUCTS IN THE EXTENDED ENTERPRISE ENVIRONMENT Gribovsky Andrey A.
The article is devoted to interaction features within the extended enterprise throughout the product lifecycle. Correct way of data transmission between participants in the extended enterprise is described.
SELECTION PROCEDURES FOR QUEUES CONSTRUCTION OF EQUIPMENT SE Shkurina Galina L
Queues planning technique of equipment service by means of selection procedures is described. Optimal queues of the equipment to be repaired are formed on the basis of objective criteria without metrics introduction. Such approach during service plans creation gives the possibility of building queues in view of equipment repairability characteristics with various degree of information completeness.
Classification of acoustic emission (AE) sources during industrial object control is one of the most important and principle technological operations of acoustic method. The basic estimation criteria of acoustic emission sources are considered. Results of experimental data analysis show compliance with estimated criteria at repeated acoustic stressing; also the intensity results of acoustic emission impulses at the full test are given.
COMPUTER SYSTEMS AND INFORMATION TECHNOLOGIES
VISUALIZATION OF MARINE OBJECT’S DYNAMICS IN WIDE-SCREEN VIRTUAL REALITY SYSTEMS Alexey Bezgodov, Zagarskikh Alexander S, Boukhanovsky Alexander V
The features of computer simulation and interactive visualization of marine object’s dynamics in irregular heavy sea are considered in frame of investigative design in shipbuilding on the base of wide-screen virtual reality system of SPbSU ITMO.
SPATIAL ALGORITHMS OF IMAGE CODING Evgeniy Kolesnikov, Kostikova Elena V
The approach to representation and processing of images on the basis of recursive reference points searching is considered in view of compression and use of two-dimensional interpolation at image restoration. The example of reference points searching algorithm is given.
VARIANTS RESEARCH OF LIFTING SCHEME PREDICTION STAGE REALIZATION WHEN SOLVING THE SOUND COMPRESSION TASK Evgeniy Piunovsky
Comparison of different realizations for wavelet transform lifting scheme prediction stage on the basis of three different functions: Haar’s, linear and polynomial – is carried out. An audio signal and financial time series are chosen as the analyzed data. The lifting scheme and the concise description of its main stages are presented. The results of different prediction variants are analyzed and their quantitative assessment is given. The conclusions about the function complexity influence on different types of signals prediction results are made.
OPERATION MODELING OF PSEUDO NETWORK DATABASE IN MS ACCESS BY SMALL BUSINESS SALES DEPARTMENT EXAMPLE Sergey Makarov, Tatiana Boronenko, Korobeynikov Anatoliy Grigorievich
The article describes the problems and characteristics of Access network databases in accordance with the specific subject area. Architecture for database construction is proposed. Data migration across all nodes of the constructed model of pseudo-network database version is simulated. Model dynamics is analyzed. The effectiveness of the created model is shown by the example of small business sales department.
QUALITY PROVIDING TASKS OF INFORMATION TRANSMISSION IN DTN NETWORKS Boris Krylov, Arseniy Kurnikov
A short reasoning for the research necessity in the field of telecommunication networks service quality, and Delay-Tolerant Networks (DTNs) in particular, is given. The main differences in protocols used in traditional networks and DTNs are described. The problem of standard protocol application in DTNs is described. The questions to be answered in the future researches in this field to increase the DTN service quality are formulated.
DESIGN METHOD OF THE THREE-DIMENSIONAL PRINTED-BOARD ASSEMBLY Kuznetsova Olga V, Romanova Eva B.
Design method of the three-dimensional printed-board assembly by solid form-factors is suggested. The conclusion is done about increasing possibility of CAD efficiency for printed-board assemblies by layout speed growth and computing optimization.
INFORMATION SECURITY METHODS AND SYSTEMS
MITIGATION OF RISKS FOR SOFTWARE TO FAIL AFTER UPDATES OR FUNCTIONALITY CHANGES Arustamov Sergei A, Genin Mikhail G
The article deals with software update strategy based on the so-called elementary updates. Comparative analysis of software update process based on elementary update approach and the update process without elementary update approach is given. Validity of such software update approach based on elementary updates is proved to mitigate the risk of information system failure after updating. An example is provided to illustrate better efficiency of elementary update approach.
FUNDAMENTALS OF SAFETY AND SECURITY ENSURING CONCEPT Volkhonskiy Vladimir V.
Main risks and threats are analyzed on the basis of general approach to safety and security problem. Basic principles of integrated automation, security and safety systems development and list of necessary information are formulated, and main questions of direct and indirect effectiveness are considered.
NEW TECHNOLOGIES IN EDUCATION
AUTOMATED SYSTEM FOR PHYSICAL AND MATHEMATICAL SCHOOL Denis Varenikov, Galina Lukyanova
This article is devoted to an automated system for physical-mathematical school of Saint Petersburg State University of Information Technologies, Mechanics and Optics. It deals with the system functionality directed to quality improvement of the educational process organization. Necessity substantiation of such system is done and advantage of the given system over analogues is noticed.
STAND DEVELOPMENT FOR EXPERIMENTAL RESEARCH OF ACADEMICNT DEPLOYMENT DIAGRAMS Skshidlevsky Anton A, Lyamin Andrey Vladimirovich
A stand for the research of learning management system AcademicNT deployment diagrams is described. The stand is based on virtualization technology and allows simplifying the system deployment mechanism and experiments with its models for efficiency increase and costs minimization. Models of learning management system are constructed based on data obtained by experiments with the stand. These models are used for the determination of hardware capacity in the case of system functioning with a given load.
ECONOMICS AND FINANCES. MANAGEMENT
CHARACTERISTICS OF ECONOMIC BEHAVIOR OF THE ART MARKET PLAYERS Oleg Vasyukhin, Olga Tararukhina
The article deals with the key characteristics of economic behavior of the art market players, empirically collected. Key characteristics for the main types of the market players are presented, as well as the main methods of promotion and distribution for the contemporary pieces of art.
MODERN DEVELOPMENT PROBLEMS OF WORLD MARKET OF INTELLECTUAL PROPERTY OBJECTS Anastasiya Dayub, Natalia Kurkina
Currently, exchange of technologies exceeds traditional economic flows of goods, services and capital. But still developing countries are continuing to trade with technologies, not protected by intellectual property rights. It reduces the income of those countries and slows the pace of development of IP objects world market. The article presents the criteria of appropriate legal protection of intellectual activity in the world technology market and the main development problems of IP objects world market.
ON CONTROL PROBLEM FOR UNKNOWN LINEAR PLANT WITH INPUT DELAY Bobtsov Alexey Alexeevich, Pyrkin Anton Alexandrovich
The idea of a stabilizing controller design by an output variable for a linear plant with unknown parameters and the input delay is discussed.
ESTIMATION AND CHOICE OF FIREWALL FAULT-TOLERANT CONFIGURATIONS Bogatyrev Vladimir A, Sergey Fokin, Marina Popova
Reliability and productivity estimation of firewall reservation variants is offered in the system including entrance switching knots levels, network screens, internal switching knots and groups of servers.
ORGANIZATION OF WORK AREA LIGHTING FOR INDUSTRIAL OPTOELECTRONIC SYSTEMS OF COLOR ANALYSIS Gorbunova Elena V., Peretyagin Vladimir Sergeevich, Chertov Alexander N.
Working area lighting organization features for the optical-electronic vision systems for industrial use from the standpoint of solving the color analysis problem are considered. A realization concept of the radiation source, formed by additive mixture of light-emitting diodes of different colors, with a controlled chromaticity is proposed.
The features of the generalized computer model for the optical electronic goniometers are considered.
LIQUID LEVEL GAUGE ON THE BASIS OF FIBER-OPTICAL SENSOR Alexander Kiyanov, Tkalich Vera L., Alexander Volchenko
The article deals with drawbacks of existing amplitude fiber-optical sensors, as well as methods of signal processing and problems of the error theory. Modified fiber-optical sensor with reference channel is suggested.
INFORMATION AND ANALYTICAL SUPPORT FOR SECURITY MANAGEMENT OF THE RUSSIAN FEDERATION ARCTIC REGIONS DEVELOPMENT: PROBLEMS, METHODS, TECHNOLOGIES Putilov Vladimir Alexandrovich
Integrated methodological research base and approaches to information and analytical support problems solution for the complex security management of the Russian Federation Arctic regions development (by the example of Murmansk region) based on simulation and cognitive information technologies have been proposed.