Summaries of the Issue

OPTICAL AND OPTICAL ELECTRONIC SYSTEMS. OPTICAL TECHNOLOGIES

OPTICAL COATINGS DESIGN BY GENETIC ALGORITHMS Eugeny Kotlikov, Valentin Shalin, Alexey Tropin
1
  A new approach for multilayer optical coatings design by evolutionary strategies on the basis of genetic algorithms is reported. The coding mode of alternative decisions is offered, and genetic operators for realization of the simple genetic algorithm are developed as well. The possibilities of the offered synthesis method are shown on the example of 3-, 5- and 7-layer achromatic antireflection coatings design. Rates of procedure convergence depending on entrance functional parameters are investigated.
DEFORMATION AND TENSION FIELDS MATHEMATICAL MODELING IN DISK OPTICAL ELEMENTS Alexei Novak, Trofimov Vladimir A., Maria Shvanova
5
  Deformation and tension fields mathematical model in disk optical elements is developed which allows predicting pictures of interference and refraction indicator distributions in a flat element of an optical disk under mechanical influence. 
11
  An optical-electronic system with a tetrahedral reflector is considered. Two dihedral angles in this reflector have a slight deviation from 90°. The system is based on the symmetric beam path scheme towards the axis of twisting with an additional reflection. Such scheme allows making measurements of the twist angle invariant to rotation on collimation angles.
14
  The inverse spectroscopy problem is considered - discrete spectra restoration with the help of measured spectrum and the spectrometer instrument function by solving the system of linear-nonlinear equations by the integral approximation algorithm. A numerical example is given showing that an effective solution of this problem enables to enhance the spectrometer resolving power.
METAL-DIELECTRIC INTERFERENCE LIGHT FILTERS Tan Tai Do, Gubanova Lyudmila Alexandrovna
19
The paper presents amethod for finding the optimal design of metal-dielectricinterference light filter and factors affecting the spectral characteristics of metal-dielectricinterference light filter.

PHOTONICS AND OPTICAL INFORMATICS

GLASS SYNTHESIS FEATURES WITH COPPER CHLORIDE NANOCRYSTALLS Nikonorov Nikolay V. , Victor Tsekhomsky, Shirshnev Pavel S.
23
  The main problems of copper chloride nanocrystalls growing in glass are observed and ways of their solution are considered. Optimal technological modes and glass compositions were found for efficient copper chloride synthesis in potassium-alumina-borate glass. Obtained glass is not photochromic and is high transparent in the visible spectrum area.
SINGLE EXCIMER LASER PULSE WRITING OF NARROW-BAND FIBER BRAGG REFLECTORS BY PHASE MASK METHOD Varzhel Sergey V., Kulikov Andrey Vladimirovich, Vladimir A. Aseev, Brunov Vyacheslav S, Vladimir Kalko, Victor Arteev
27
  The article presents the results of fiber Bragg gratings writing in birefringent optical fibers with enhanced photorefractive feature by a single 20 ns pulse of KrF excimer laser (248 nm wavelength). Fiber Bragg gratings in birefringent optical fiber with elliptical stress cladding with reflection more than 10% and spectral width at half maximum ~ 0.1 nm were obtained. Beat length and the effective refractive index for each of the selected axes of a birefringent fiber were calculated based on experimentally obtained data.

COMPONENTRY AND APPLIANCIES OF TECHNICAL SYSTEMS

31
  The paper discusses the need for improved control methods of air pollution by asymmetrical dimethylhydrazine; for this purpose new means of measurement were developed. 

ANALYSIS AND SYNTHESIS OF COMPLEX SYSTEMS

35
  The procedure and Matlab software for maps creation of the anomalous gravity field based on point masses are described. The procedure is iterative, therefore, the criterion for point masses selecting is being discussed. The results and method testing for maps creation of the Lake Baikal area are presented.
39
  The paper presents main scheme-constructive solutions obtained by layout designing of the gyroscopic orientation module for underground navigation system intended for the shelves of the Arctic seas. The system implements a fundamentally new kinematics of the strapdown gyroscopic inclinometer providing the required accuracy of well positioning in the high latitudes.
44
  The task of time-frequency analysis of signals from noticeable radar stations by wavelet transform is being considered. Efficiency of this method application is shown,andthe simulation results are presented.
48
  The problem of determining the electromagnetic fields generated in the lower ionosphere (50 - 500 km) by ground-level low-frequency antennas is considered.The solution is createdby the methodof normalwavesinmodelsof a sphericalEarth-ionosphere waveguide, radial inhomogeneous anisotropicionosphere, an arbitraryorientation ofthe geomagnetic field andthe electricandmagnetic dipoles. Fieldsdefinition in theionosphereathigher altitudesin thesolution instability reduces tointegration ofdifferential equationsforthe tangentialfield components ofthe penetratingon-site wave. Acombinationof differential equations forthe wave admittanceandfor the tangentialcomponentof waves is integrated atloweraltitudes. Initialconditions are given inthe WKB (Wentzel-Kramers-Brillouin)approximation.Relations betweenthe components ofthe fieldsexcitedin theionosphere bythe variousground-levelemitters are obtained using thegeneralizedreciprocity theorem.
53
  Vector-matrix model and synthesis methodologyof scanning axis electric drive control system based on the contactless electromagnetic converter with limited rotationangle and closed in view of rotation angle was proposed. Scanning process simulation at given electromagnetic convertercharacteristics and scanning diagram parameters was performed, having proved synthesis techniques relevancy  and  feasibility of executive-axis desired motion in tracking mode.
SYSTEM AND ALGORITHMS OF BALLBOT STABILIZATION Borgul Alexander S, Gromov Vladislav S., Zimenko Konstantin Alexandrovich, Sergey Maklashevich
58
  Stabilization problem of unstable construction with the ball at the base and two connected motors was solved. Regulators were synthesized on the basis of linear-quadratic functional optimization and qualitative exponential stability ensuring method. Experimental researches of control system were performed on the model based on robotics complex LegoNXT.
CONTROL ALGORITHM FOR AUTONOMOUS TWO-WHEELED MOBILE ROBOT «MOTOBOT» Bobtsov Alexey Alexeevich, Borgul Alexander S, Zimenko Konstantin Alexandrovich, Pyrkin Anton Alexandrovich
63
  Control problem for mobile robot like a bike based on Lego Mindstorms NXT is considered. The controller providing stable moving of the robot model in vertical position at the horizontal plane is designed that allows regulating distantly the route as well.

COMPUTER SYSTEMS AND INFORMATION TECHNOLOGIES

69
  Hidden Markov models and algebraic Bayesian networks are probabilistic graphical models and therefore they are quite similar. Hidden Markov models have wide application while algebraic Bayesian networks are not so widespread, but their instruments allow simulating and solving hidden Markov models problems. We considered the improvement performance of the solution algorithm for hidden Markov models first problem by means of algebraic Bayesian networks methods. An algorithm for estimating probability of observed sequence in binary linear hidden Markov models by means of algebraic Bayesian network posterior inference is formulated in the article.
74
  The article contains demand analysis for tasks, structure and functions of a monitoring system of common channel signaling at digital telephone exchanges and presents technical solutions for such system practical implementation.
77
  This paper presents an approach to special-purpose processors design using data-flow algorithm model. Main classes of data-flow models are considered. A model with distributed control is offered, effective and simple in hardware implementation. The main factors limiting the performance of data-flow processors are shown.
ERRORS CORRECTION METHOD IN THE READINGS SET OF NUCLEOTIDE SEQUENCE Alexandrov Anton V., Sergey Kazakov, Sergey Melnikov, Sergushichev Alexey A. , Fedor Tsarev, Shalyto Anatoly Abramovich
81
  Sequencing and assembling of large genomes is one of the actual problems in current bioinformatics. The input data for genome assembling is a set of so-called readings made by sequencing machines. These readings may contain errors coming from sequencing technology based on chemical reactions. That's why often one of the genome assembling steps is errors correction in the set of readings. Most of error correction methods build de Bruijn graph. We describe a method that doesn’t use de Bruijn graph and enables to decrease significantly memory usage. It was implemented and tested at genome assembling in the «de novo Genome Assembly Project».

LASER AND MEDICAL TECHNOLOGIES

85
  Application of correlation-extreme method for detection tasks solution and time points estimation of QRS-complexes in an electrocardiogram is described. Working characteristics of detection and accuracy characteristics of time points estimation of R-waves maximums in ECG are obtained.

LASER SYSTEMS AND LASER TECHNOLOGIES

91
  Research results of chemical reactions in picture formation by laser marking on the surface of beryllium gyroscopic details by investigations of thermodynamic analysis are given. Conductivity control ability of contrast picture created by laser marking by varying the composition and partial pressures of the gaseous medium components is revealed. The results of X-ray analysis confirming the data of analytical calculations are presented.

INSTRUMENT-MAKING TECHNIQUE. ORGANIZATION OF PRODUCTION

96
  This article presents the study of heat treatment condition influence on Cr-Ni-Al alloy microstructure and its mechanical properties including dimensional stability characteristics which provide keeping high accuracy of float gyro precision details. Optimal annealing conditions are detected. Correlation between ageing conditions and dimensional stability characteristics such as precision elastic limit σ0,0001is determined. Ageing temperature range 400-550°Сis defined as allowing getting higher precision elastic limit with keeping alloy plasticity.
100
  New design concept of automated control system for assembly manufacturing process based on adaptive and selective assembly is considered. This concept provides new design and structure methods for automated control systems in agreement with peculiarities of such manufacturing processes, namely, highly accurate mathematical models of the product, inaccurate specification of automated assembly line performance, safe and effective performance of different line devices even when fault conditions or exceptions occur and etc.
MULTIAGENT TECHNOLOGIES APPLICATION FOR IMPLEMENTATION OF VIRTUAL ENTERPRISE CONTROL SYSTEM Afanasiev Maksim Ya , Anna Salomatina, Ekaterina Alyoshina, Yablochnikov Yevgeny I.
105
  Application possibility of multiagent technologies for problem decision of orders analysis for technological production background and executors selection is considered. Multilevel estimation methodology of order implementation conditions by enterprises is proposed. 
TECHNOLOGICAL METHODS OF PRODUCT QUALITY GUARANTEE Ivanov Andrey Yu, Leonov Dimilyan B
111
  Suitability improvement of products quality by optimizing the surface micro geometry of details and mechanical stresses in the surface layers of their material is substantiated. The principal method of nonparametric estimation criteria application and control of these characteristics of the details surface layer during manufacturing is set forth.

THERMAL PHYSICS AND THEORETICAL HEAT ENGINEERING

115
  Testing results of updated steam separators-superheaters of SPP–500–1 type with "Powervane" jalousie blocks are presented. These blocks have been developed by the Balcke-Durr company, Germany. Measurement results of the heated steam humidity at the outlet of SPP separation part and the temperature between overheating stages are analyzed.

ECONOMICS AND FINANCES. MANAGEMENT

120
  Kirov region society was shared on six stratums on the base of its social difference. The interaction of these stratums gives a full description of the region economy. Mathematical model taking into account socio-economic society preferences is created. For model identification it is convenient to use parallel computing. First results and each stratum's reaction was received, the common trend was defined.
124
  The article presents the key findings of intellectual capital introduced in the enterprises activities in conditions of innovative economy. Special attention is paid to analysis of the intellectual capital impact at the company's competitiveness as a whole.
127
  The system reasons of economy crisis and its nature are analyzed. Inadequacy of the dominating organizational-administrative doctrine to the maintenance of system crisis and the concept of a sustainable development of the Russian economy is shown. Necessity of new approaches, methods, mechanisms and models for working out an adequate modernization politics is proved. Synthesis of organization and management theory statements, the economic theory, the theory of technological innovations and synergy is considered as a theoretical base of the new organizational-administrative concept of a sustainable development of enterprising structures. Contents, motive forces and theory model of synergy development of the enterprising structures, focused on synergy technologies and synergy effects formation is considered.
130
  Basic stages of strategic management of building enterprises are described and analyzed. Theoretical positions of strategic management are concretized for building managing subjects in Russia, also the principal views of strategies are described, which are expediently used at the building enterprises in Russia for the purpose of high results maintenance of  economic activities in long-term prospect. The author offers and concretizes principal views of strategy which can be used at economic activities management of the building branch enterprises. 

NEW TECHNOLOGIES IN EDUCATION

135
  Remote teaching problems and methods of natural-science disciplines (mathematics) at the open education department of Financial University under the government of the Russian Federation are described; the description of educational portal is given, and work experience with the students of external and remote departments is generalized.
AUTOMATED SYSTEM FOR FORMING AND MANAGING OF THE UNIVERSITY PERSONNEL RESERVE Natalia Gorlushkina, Yuri Kolesnikov, Kurkin Andrey, Irina Shcherbakova, Elena Filippova
139
  We propose an automated system for formation and management of personnel reserve of St. Petersburg State University of Information Technologies, Mechanics and Optics. The necessity of such system is justified. We consider its functional, which is aimed at accounting of personnel reserve. The system enables to record and plan the University staff reserve with monitoring personal achievements of applicants.

BRIEF REPORTS

145
Substantiation technique of optimum structure, quantity and distribution of resources for emergencies liquidation is created. The software providing minimum damage from emergencies at restricted financial resources is developed on its basis.
146
Aspects of virtual laboratory works creation is considered
147
The most well-known methods of optical systems calculation are considered. Calculation example of the largeaperture (1:1.2) filming lens with f '= 35 mm is given based on calculation theory of Professor D. Volosov.
Copyright 2001-2017 ©
Scientific and Technical Journal
of Information Technologies, Mechanics and Optics.
All rights reserved.

Яндекс.Метрика