Vladimir, Russia

Time filter

Source Type

Terekhin A.V.,Vladimir State University
2016 Dynamics of Systems, Mechanisms and Machines, Dynamics 2016 | Year: 2016

During the past five years, many researchers have developed different approaches to the classification of images, which are used for a variety of scientific tasks [1, 2, 3 and 4]. The research is aimed at solving task of classification of three-dimensional objects by the images of their projections in systems of automatic recognition of randomly located parts and products in the industrial belt. This article describes the classification model of flat nonconvex images by their form. Author offers twelve classes. The criteria for classification in this model is combination of diagonal segments in the four quadrants of the bounding rectangle of image projection of the object. Illustrations of each class, classification scheme as well as the research results of developed model on images of projections of real three-dimensional objects are provided. © 2016 IEEE.

Terekhin A.V.,Vladimir State University
2016 Dynamics of Systems, Mechanisms and Machines, Dynamics 2016 | Year: 2016

The ubiquity increase of production volumes leads to the introduction of automatic conveyors and assembly lines. An integral part of it is the robotic units, equipped with technical vision. System of automatic recognition is used therein as a machine vision. The main part of any SAR is a vector of image features. During the past five years, various of researchers have published many algorithms for calculating object features that allows to recognize three-dimensional objects [1, 2, 3 and 4]. This article describes an algorithm for calculating the dimensionless features of flat binary nonconvex images that are invariant to a shift, rotate, and scale change of the image of the object in the scene. The basis of developed features is a vector of diagonal features of form (created by author) of images of projections of three-dimensional objects, that describes the shape of the convex projection of the object. Selecting the basis for the development of new features is determined by the fact that using the basis of diagonal features of form, image classification model was created. It allows to use this features for solving the problem of recognition of randomly arranged three-dimensional objects by two images. © 2016 IEEE.

Zhiganova E.A.,Vladimir State University
2016 Dynamics of Systems, Mechanisms and Machines, Dynamics 2016 | Year: 2016

A mathematical model of the frequency detection signals of nonlinear devices and mathematical modeling of the quadrature power amplifier frequency-modulated signal under the influence of harmonic interference on the non-linear reinforcing elements of the device are presented. Assess the degree of reduction of intermodulation oscillations in a narrow frequency band of the output signal of the quadrature amplifier power than a single amplifier. Defined as the non-linearity characteristics of the power amplifiers included in quadrature amplifier affects the frequency of the modulating signal changes. © 2016 IEEE.

Proskuryakov A.,Vladimir State University
Procedia Computer Science | Year: 2017

The paper presents a mathematical model of processing and forecasting time series data. The mathematical model based on the methods of artificial neural networks and preliminary data processing using wavelet transforms discribed. © 2017 The Authors.

Demirchyan S.S.,Vladimir State University | Chestnov I.Yu.,Vladimir State University | Alodjants A.P.,Vladimir State University | Glazov M.M.,RAS Ioffe Physical - Technical Institute | Kavokin A.V.,University of Southampton
Physical Review Letters | Year: 2014

We propose a novel physical mechanism for the creation of long-lived macroscopic exciton-photon qubits in semiconductor microcavities with embedded quantum wells in the strong coupling regime. The polariton qubit is a superposition of lower branch and upper branch exciton-polariton states. We argue that the coherence time of Rabi oscillations can be dramatically enhanced due to their stimulated pumping from a permanent thermal reservoir of polaritons. We discuss applications of such qubits for quantum information processing, cloning, and storage purposes. © 2014 American Physical Society.

Attia A.M.A.,Benha University | Kulchitskiy A.R.,Vladimir State University
Fuel | Year: 2014

In this work the effect of the structure of water-in-diesel fuel emulsion (WFE) on a three cylinder diesel engine performance has been investigated. Based on membrane emulsification, two different membranes of pore sizes of 0.2 μm and 0.45 μm has been individually used to change the emulsion structure while keeping the same WFE volumetric content (at 17% water volumetric content and 0.5% mixing emulsifier content). The Results showed that emulsions with large size of water droplets resulted in greater reduction in NOx emissions up to 25%. While, emulsions with finer droplets not only gave reductions in engine smoke and unburned hydrocarbons of values greater than 80% and 35% respectively, but also resulted in an increase of the engine effective efficiency up to 20%. © 2013 Elsevier Ltd. All rights reserved.

Mosin S.,Vladimir State University
Information Technology and Control | Year: 2011

Application of built-in self-test circuitries allows to improve the testing quality and reliability of complex analog and mixed-signal IC. BIST-circuitry is integrated to original circuit for the purpose of test signal generation, measurement of output responses and decision-making about correctness of circuit under test functioning. The most part of BIST-circuitries for analog and mixed-signal IC uses generators of sine wave or multifrequency wave for test signal generation, but it is not applicable for majority of practical implementations because of crucial in-creasing the chip area required for in-circuit realization of generator. The built-in self test circuitry for analog and mixed-signal IC based on reconfiguring original circuit in oscillator, which does not need the generator of input test signals, has been proposed. The principles of functioning and main components of the solution have been considered. The correct and incorrect behaviour of analog subcircuit is reflected in digital way by logical 0 or 1. The proposed circuitry provides possibility for joint testing analog and digital subcircuits of mixed-signal IC. The experimental results for benchmark second-order active filter demonstrating high efficiency of proposed BIST-circuitry have been represented. The fault coverage obtained by application of proposed BIST-circuitry is not inferior to results of other authors for the same filter, but measuring and estimation of output responses are performed in-circuit.

Shutov A.V.,Vladimir State University | Maleev A.V.,Vladimir State University | Zhuravlev V.G.,Vladimir State University
Acta Crystallographica Section A: Foundations of Crystallography | Year: 2010

A class of quasiperiodic tilings of the complex plane is discussed. These tilings are based on Β-expansions corresponding to cubic irrationalities. There are three classes of tilings: Q 3, Q 4 and Q 5. These classes consist of three, four and five pairwise similar prototiles, respectively. A simple algorithm for construction of these tilings is considered. This algorithm uses greedy expansions of natural numbers on some sequence. Weak and strong parameterizations for tilings are obtained. Layerwise growth, the complexity function and the structure of fractal boundaries of tilings are studied. The parameterization of vertices and boundaries of tilings, and also similarity transformations of tilings, are considered. © 2010 International Union of Crystallography. Printed in Singapore-all rights reserved.

Alodjants A.P.,Vladimir State University | Chestnov I.Y.,Vladimir State University | Arakelian S.M.,Vladimir State University
Physical Review A - Atomic, Molecular, and Optical Physics | Year: 2011

The problem of photonic phase transition for the system of a two-level atomic ensemble interacting with a quantized single-mode electromagnetic field in the presence of optical collisions (OCs) is considered. We have shown that for large and negative atom-field detuning a photonic field exhibits high-temperature second-order phase transition to superradiant state under thermalization condition for coupled atom-light states. Such a transition can be connected with superfluid (coherent) properties of photonlike low branch (LB) polaritons. We discuss the application of metallic cylindrical waveguide for observing predicted effects. © 2011 American Physical Society.

Mosin S.,Vladimir State University
Proceedings - 2015 4th Mediterranean Conference on Embedded Computing, MECO 2015 - Including ECyPS 2015, BioEMIS 2015, BioICT 2015, MECO-Student Challenge 2015 | Year: 2015

Testing and diagnosis of analog circuits are very important tasks at the quality assurance of integrated circuits and electronic devices. Faults detection and identification are realized using fault dictionary. The architecture of fault dictionary has an essential influence on time and efficiency of diagnosis at whole. An approach to the construction of fault dictionary as the neuromorphic classifier for analog fault testing and diagnosis is proposed. The approach takes into account the component tolerances, includes the faults clustering as the preprocessing and selection the essential characteristics of CUT's output responses providing the maximum distinguishability between all fault clusters. The experimental results were obtained for second-order bandpass filter and are presented in the paper for demonstrating the proposed approach. © 2015 IEEE.

Loading Vladimir State University collaborators
Loading Vladimir State University collaborators