bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigating Anxiety Symptoms and Reactions within EFL Learners’ Oral Narratives: The Case of Intermediate Level Students
Authors: Sanaei Omid
Published: September 2016

The present study investigated anxiety symptoms and reactions in EFL learners’ oral narratives. The focus of the study was first to ascertain whether EFL learners’ anxiety symptoms and reactions can be influenced by the degree of foreign language speaking anxiety in the classroom, and secondly to indicate to what extent Iranian EFL learners divulge the components of anxiety symptoms and reactions while they are narrating. Participants were 11 students comprising 5 males and 6 females studying English Literature at the University of Guilan, and they were selected by Purposive Sampling (Quota Sampling). ACTFL guidelines, Foreign Language Classroom Anxiety Scale (FLCAS), picture stories for narrative tasks, and direct observation were instruments of this study. The present study followed a mixed-method design in which EFL learners’ foreign language classroom anxiety was investigated quantitatively. Moreover, anxiety symptoms, anxiety reactions and their components were analyzed qualitatively. The results revealed that more evident anxiety symptoms and reactions can be found in more anxious students. Furthermore, it was revealed that physiological reactions to the classroom anxiety were visible within slightly anxious learners, while behavioral reactions occurred in all of the students.
The Development of Indonesian Language Learning Materials Based on Local Wisdom of the First Grade Students in Sma Negeri 3 Palopo
Authors: Sehe Sehe , Tolla Achmad , Kamaruddin Kamaruddin , Hamsa Akmal
Published: September 2016

This study was a research and development, with the aim of producing the development of Indonesian language learning materials based on local wisdom. There were three steps in this research and development. The first was a preliminary study. It was the literature studies and field studies. The second was the development study starting from analyzing the development of learning materials, the design of the initial product (prototype), and the development of Indonesian learning materials based on local wisdom. The third was an evaluation. It was conducted to test the effectiveness and feasibility of the development of Indonesian language learning materials based on local wisdom. The data of test results show that students’ average score reaches 82.31 from 30 students who were tested. The highest score is 87.70, and the lowest score is 73.60. Of the 30 students who worked on the student worksheet, there are 25 students (83.33%) who have a very high score category, and five students (16.67%) are in the high score category. Based on the learning outcomes regarding the mastery standard of the class namely 75%, the data show that students' work has been completed because there are 90% of 30 students who have reached the mastery standard of the class. Therefore, the use of Indonesian language learning materials based on local wisdom is feasible and suitable to be applied in accordance with the level of capabilities and characteristics of the first-grade students in SMA Negeri 3 Palopo.
Appraisal Resources in Chinese College Students' English Argumentative Writing
Authors: Yang Yilong
Published: September 2016

Appraisal system is the new development of Halliday's interpersonal function, which is a very important parameter in argumentative writing since its purpose is to influence and convince readers. Directed by appraisal system, with UAM corpus tool for annotation and statistics, this paper carried out a comparative empirical research in interpersonal meaning on Chinese and American students' 64 English argumentative essays. The study found that the overall use of appraisal resources in Chinese English majors' essays fell far behind American college students, with the only exception of affect resources. In the attitude subsystem, it shows that Chinese college students have a poor vocabulary, colloquial expressions, subjective logic and other problems; in the engagement, students from the two countries have an abundant use, which may be relevant to argumentative writing itself; although graduation resources are the nucleus of appraisal system, they are least used by the two group of students, probably caused by the reason that graduation meaning are often covert in the text. The study contributes to revealing a comprehensive difference of appraisal resources between Chinese and American college students' argumentative writing, and the teaching of writing in such genre will also be benefited.
Agrammatism in Adult Persian Broca's Aphasia: A Case Study
Authors: Salehnejad Leila , Shekaramiz Mansoore
Published: September 2016

The grammar of a right-handed monolingual adult native speaker of Persian who suffered from Broca's aphasic following a left hemisphere frontal lobe lesion subsequent to CVA was analyzed, discussed, and compared with control data. The spontaneous speech and descriptive speech were designed and performed. The data suggested that Persian agrammatism appears like this syndrome in other studied languages; there are severe impairments in the verbs and patients rely more on nouns than on verbs. The patterns of omissions and substitutions of grammatical morphemes seem show extreme variations in different patients, both in terms of the occurrence of errors in different grammatical morphemes as and in terms of the occurrence of omissions versus substitutions. There were also some language-particular patterns.
Model secret sharing schemes in systems transmit video
Authors:   Omsk State Technical University, Sagaydak D. , Faizullin R. ,   Omsk State Technical University
Published: September 2016

This paper proposes two embodiments secret sharing schemes on non-equal shares with essentially a small part of the secret to securely storage and processing of video data centers, which are based on RGB-representation (abbreviation round English words Red, Blue, Green - Red , green, blue) of each video frame. For each of the proposed scheme is made software implementation in the programming environment Borland C + + Builder 6.
The calculation of eigenvalues modes of the planar anisotropic waveguides for various angles the optical axis
Authors:   Volgograd State University, Moiseeva N.
Published: September 2016

For a homogeneous anisotropic planar waveguide made solution of the Maxwell. We obtained fundamental matrices decision for the TE and TM waves in an anisotropic plane homogeneous layer. Was obtained the dependence of the phase shift of TM waves reflected from the boundaries of "anisotropic layer - isotropic medium" on the inclination angle the optical axis. The numerical solution of the dispersion equation TM waves in an anisotropic planar waveguide with different orientation of the optical axis in the plane of the wave. The asymptotic behavior of the dispersion curves was decided.
The time characteristics of a four-wave radiation converter on thermal nonlinearity in the scheme with codirectional pumping waves
Authors:   Samara State University, Akimov A. , Vorobeva E. ,   Samara State University, Ivakhnik V. ,   Samara State University
Published: September 2016

An expression for the time response of degenerate four-wave radiation converter on thermal nonlinearity has been obtained for the scheme with codirectional pumping waves with undepleted pump approximation. The time dependence of spatial spectrum of object wave has been analyzed. It has been shown, that the increase of the angle between pumping waves weakly influences on the outlet time of half-bandwidth of spatial frequencies on steady value at the plane of pumping waves. On the other hand the outlet time of half-bandwidth of spatial frequencies on steady value decreases at the plane whith is perpendicular to pumping waves.
Simulation of focusing femtosecond pulse by ellipsoid, paraboloid, sphere and hemisphere
Authors:   Image Processing Systems Institute of the RAS, Kozlova E. , Kotlyar V. ,   Image Processing Systems Institute of the RAS
Published: September 2016

Numerical simulation of FDTD-method showed that it is not temporarily broadening of pulses and spatial broadening a little more for less short pulse in case of focusing two linearly polarized pulses of 1,24 fs and 2,98 fs (with a plane wavefront and a central wavelength of 532 nm) by silica microspheres with a diameter of 2 µm. In contrast, spatial and temporal broadening of the pulse is in the normal way: a shorter pulse broadens more than less short in the case of by focusing by hemisphere, the paraboloid and ellipsoid (all with maximum cross-section diameter of 2 µm).
Airy laser beams with hyperbolic trajectory in near field
Authors:   Image Processing Systems Institute of the Russian Academy of Sciences, Kotlyar V. ,   S.P. Korolyov Samara State Aerospace University (National Research University), Kovalev A. ,   Image Processing Systems Institute of the Russian Academy of Sciences,   S.P. Korolyov Samara State Aerospace University (National Research University), Zascanov S. ,   S.P. Korolyov Samara State Aerospace University (National Research University)
Published: September 2016

From our review of the papers on accelerating beams and Airy beams (AB) it follows that the well-known types of AB are propagating along parabolic trajectories, while accelerating beams, which propagate along nonparabolic trajectories, do not have an analytical description in the Fresnel zone. Further in the paper we consider the second kind of AB. These beams are also accelerating, have an analytic expression in the Fresnel zone, propagate along a hyperbolic trajectory and can be generated with a phase mask having a cubic dependence on the transverse coordinate.
Complex vortex beams for of rotation of micromechanical elements
Authors:   Image Processing Systems Institute of the RAS, Morozov A. ,   S.P. Korolyov Samara State Aerospace University (National Reseach University), Skidanov R. ,   Image Processing Systems Institute of the RAS,   S.P. Korolyov Samara State Aerospace University (National Reseach University)
Published: September 2016

Considered diffractive optical elements that form a complex vortex beams for rotating micromechanical elements. Presented experiment of the formation of the beams and experiment by the rotation of agglomerations of polystyrene microparticles in complex vortex beams.
Electromagnetic field scattering simulation from anthropogenic objects on underlying surface
Authors:   Image Processing Systems Institute of the RAS, Zherdev D. ,   S.P. Korolyov Samara State Aerospace University (National Research University), Kazanskiy N. ,   Image Processing Systems Institute of the RAS,   S.P. Korolyov Samara State Aerospace University (National Research University), Fursov V. ,   Image Processing Systems Institute of the RAS,   S.P. Korolyov Samara State Aerospace University (National Research University), Kharitonov S. ,   Image Processing Systems Institute of the RAS,   S.P. Korolyov Samara State Aerospace University (National Research University)
Published: September 2016

Solving the problem of modeling scatterograms for objects composed by solid bodies of simple shapes. A two-stage scheme, the first of which modeling formation of an electromagnetic field in the vicinity of the facility with the use of difference equations of Maxwell's 3-dimensional Cartesian coordinate system. In the next step solved the problem of determining the magnitude of the far-field point. Gives examples simulation of scatterograms.
Thermocycling with pulse-periodic laser action for formation of nanoporous structure in metal material
Authors:   S.P. Korolyov Samara State Aerospace University (National Research University), Murzin S. , Tregub V. ,   S.P. Korolyov Samara State Aerospace University (National Research University), Shokova E. ,   S.P. Korolyov Samara State Aerospace University (National Research University), Tregub N. ,   S.P. Korolyov Samara State Aerospace University (National Research University)
Published: September 2016

Conditions of pulse-periodic laser action with thermocycling for formation of a nanoporous structure consisting of principally channel-type nanosize pores in two-component Cu-Zn alloy “brass of 62%” are experimentally defined. The transformation of laser radiation into a light spot with uniform distribution of power density was carried out with the aid of an optical system containing an element of diffractive computer optics – radiation focusator. Depth and area locality of the physical processes in heat-affected zone with preservation of initial material properties and absence of significant deformation in the remaining volume is ensured in the implementation of the chosen conditions. The amount of structural defects – vacancies, dislocations and their clusters increases in two-component brass under the influence of thermal stress. Wedge-shaped submicrocavities that converge at their edges with formation of extensive nanosize channels with widths not more than 100 nm are formed in the material of 0.05 mm thickness.
Simmulations of sommerfeld and brillouin precursors in the medium with frequency dispersion using numerical method of solving wave equations
Authors:   Image Processing Systems Institute of the RAS, Kozlova E. , Kotlyar V. ,   Image Processing Systems Institute of the RAS
Published: September 2016

The wave equation (2 +1) taking into account the frequency dispersion of the material for TE polarization is written in a form in which the second time derivative included under the sign of the convolution integral describing the electric induction. An algorithm for solving such equations using explicit finite difference scheme is developed. The solution of the wave equation, describing the propagation of ultrashort pulse duration of 3.36 fs (in the spectral range 274-806 nm) in a planar waveguide made of quartz glass at the center wavelength of 532 nm, is different from solutions of this equation without dispersion for 3% and from solutions of Maxwell's equations derived by FDTD-method in the program FullWAVE, for 6%. A detailed analysis of the obtained solutions for a femtosecond pulse with a sharp initial front resulted in the discovery of precursors, which come to the observation point before the main pulse and the intensity is 100 times smaller. Moreover, the calculated time delay Sommerfeld precursor differs from the theoretical to 20%, And the Brillouin precursor of 3%.
Two-component nanocavity based on a regular photonic crystal nanobeam
Authors:   Image Processing Systems Institute of RAS, Serafimovich P.
Published: September 2016

I propose and numerically examine a two-component design of an optical nanocavity. Such a nanocavity consists, first, of a photonic crystal nanobeam, in which the period of the structure is not changed. Second, the cavity contains a piece of additional (supplementary) material with the area of several periods of the photonic crystal. When combining the two components the defect has formed, in which the resonant mode can be excited. The advantages of the proposed model of the cavity has been considered. In particular, the easiness of formation of cavities arrays and of development of dynamic nanophotonic elements. The proposed nanocavity fabrication tolerances have been calculated. It is shown that existing structural layers alignment technologies can be used for fabrication.
Analytical design of refractive optical elements generating a curve
Authors:   Image Processing Systems Institute of the RAS, Dmitriev A. ,   S.P. Korolyov Samara State Aerospace University (National Research University), Doskolovich L. ,   Image Processing Systems Institute of the RAS,   S.P. Korolyov Samara State Aerospace University (National Research University), Aslanov E. ,   S.P. Korolyov Samara State Aerospace University (National Research University)
Published: September 2016

A method for designing refractive optical elements focusing collimated incident beam into a curve with specified shape is proposed. A general relationship for the freeform surface of the optical element is derived as an envelope of a parametric family of hyperboloids of revolution which focus the incident beam into the points on the curve. Using the thin optical element approximation, the calculation of the hyperboloid parameters providing required irradiance distribution along the curve is reduced to the solution of an explicit first order differential equation. The application for the proposed method to focus into the set of points on the curve is presented. The optical element generating line segment focus and the composite optical element to focus into the curve that consists of two circular arcs are designed. The optical elements to focus into the set of points on the line-segment and on the curve that consists of two circle arcs.
Orbital angular momentum of superposition of two generalized hermite–gaussian laser beams
Authors:   Image Processing Systems Institute of the Russian Academy of Sciences, Kotlyar V. , Kovalev A. ,   Image Processing Systems Institute of the Russian Academy of Sciences
Published: September 2016

We have obtained an expression for complex amplitude of the generalized paraxial Hermite-Gaussian (HG) beams. At certain parameters these beams become well-known HG modes and elegant HG beams. We calculated an orbital angular momentum (OAM) of linear combination of two generalized HG beams with transposed adjacent indices and with phase delay of p/2. It has been shown that for a sum of two HG modes the OAM is integer, while for two elegant HG beams it is always unitary and for two hybrid HG beams it is fractional.
Design lenses forming paraxial longitudinal distribution according to their spatial spectra
Authors:   Image Processing Systems Institute of RAS, Khonina S. , Ustinov A. ,   Image Processing Systems Institute of RAS
Published: September 2016

We consider radially-symmetric diffractive optical elements forming along optical axis a set of local foci or zero values by the specific law. The axial distribution is determined by the spatial spectrum of the radial function of the optical element that allows us to call these elements longitudinally-spectral lenses. The theoretical explanation of the effect is based on the reduction of the on-axis Fresnel-Hankel transform to the one-dimensional Fourier transform. We investigate different lenses, including that forming the longitudinal-modal distribution proportional to the Airy and Gauss-Hermite functions.
Application of radiation focusators for creation of nanoporous metal materials with high specific surface area by laser action
Authors:   S.P. Korolyov Samara State Aerospace University (National Research University), Murzin S. , Tregub V. ,   S.P. Korolyov Samara State Aerospace University (National Research University), Melnikov A. ,   S.P. Korolyov Samara State Aerospace University (National Research University), Tregub N. ,   S.P. Korolyov Samara State Aerospace University (National Research University)
Published: September 2016

Nanoporous metal material with high specific surface area was created under the action of laser radiation with the use of radiation focusators. The regimes of laser action under which nanoporous layer is formed in the centre of the thermal-affected zone on the surface of the material being investigated containing the products of reaction of cuprum and zinc in the alloy with the oxidizing medium. After laser treatment samples of brass L62 were exposed to plastic deformation and high temperature impact for the estimation of mechanical strength and heat resistance of the produced nanoporous material. Main part of the surface does not have destructions after the plastic deformation in two different modes and two high-temperature annealings, exfoliation of the porous layer was not observed, that is the evidence of sufficiently high mechanical strength and high resistance of the derived nanoporous material.
The use of structured lighting in computer vision systems
Authors:   Image Processing Systems Institute of the RAS, Popov S.
Published: September 2016

I suggest using a structured lighting for detecting the presence of a train on a controlled track and fixing car-to-car gaps in vision systems on the railway. This approach eliminates the need of special sensors or additional equipment for the specified control and, in conjunction with other decisions of complex technology articulating design of all components of vision systems, allows to increase the maximum speed of trains passing through the checkpoints, to improve significantly the accuracy of the process of recognition of identification numbers of cars and containers, makes it possible to bring the camera closer to the track, to control all roads of the railway station simultaneously under the minimal distance between them.
Iterational method for piecewise constant images restoration with an a priori knowledges of image objects boundaries
Authors:   Image Processing Systems Institute of the RAS, Sergeyev V. , Denisova A. ,   Image Processing Systems Institute of the RAS
Published: September 2016

This article observes restoration method for piecewise constant images with predefined areas’ borders based on Van Cittert filtration. As a distortion Gaussian and rectangle impulse response are considered. Image to be reconstructed is the result of sampling and noise addition. The results of experimental research of dependency of accuracy and stop-criterion from iteration number are demonstrated. Also potential application for remote sensing image analysis such as quality enhancement of average assessments is described.
Object identification in labyrinthine domain structures
Authors:   N.P. Ogarev Mordovia State University, Bragin A. , Logunov M. ,   N.P. Ogarev Mordovia State University, Nikitov S. ,   Kotel’nikov Institute of Radio Engineering and Electronics of RAS, Pyanzin D. ,   N.P. Ogarev Mordovia State University, Trifonov A. ,   N.P. Ogarev Mordovia State University
Published: September 2016

Object classifier on digital images of labyrinthine domain structures based on a fuzzy knowledge base is proposed. Classifier approbation for the analysis of images that contains few thousands objects is realized. Projected classifier can be used for the analysis of different origin images that comprise bubble, elliptical, dumbbell shaped, stripe andramified elements.
The recognition of spatial point object images
Authors:   Volga State University of Technology, Khafizov D.
Published: September 2016

Questions of image recognition and estimation of rotation parameters of spatial point objects images on the basis of the main things method are considered. The application of the given method allows to receive an estimation of rotation parameters of spatial point object at the absence of the information on numbering of points in object that essentially simplifies the decision of problems of recognition of spatial points objects.
Entanglement of two superconducting qubits interacting with two-mode thermal field
Authors:   Samara State University, Bashkirov E. , Mastyugin M. ,   Samara State University
Published: September 2016

The influence of dipole-dipole interaction and initial coherence of two flux qubits interacting with two different electronic superconducting LC-cavities in thermal states on the entanglement degree has been investigated.
Modulation instability of packets in inhomogeneous light guides
Authors:   Ulyanovsk State University, Zolotovskii I. , Lapin V. ,   Ulyanovsk State University, Sementsov D. ,   Ulyanovsk State University
Published: September 2016

The conditions of the modulation instability of a wave packet in a two-mode fiber c exponential profile heterogeneity group velocity dispersion along the length of the fiber have been investigated. The analytical expressions of the integral gain increment of harmonic disturbances, and other important characteristics that determine the dynamics of the modulational instability of two interacting modes in an optical fiber with a given type of heterogeneity were obtained.
Features of nonparaxial propagation of gaussian and bessel beams along the axis of the crystal
Authors:   Image Processing Systems Institute of Russian Academy of Sciences, Khonina S. , Volotovsky S. ,   Image Processing Systems Institute of Russian Academy of Sciences, Kharitonov S. ,   Image Processing Systems Institute of Russian Academy of Sciences
Published: September 2016

It is analytically and numerically shown that nonparaxial mode laser beams propagating along the axis of a crystal demonstrate the periodic change of intensity connected with an interference of ordinary and extraordinary beams. For Bessel beams the oscillation period inversely proportional to a square of spatial frequency of a laser beam and a difference of dielectric permittivity. For the linearly-polarized radiation there is a periodic redistribution of energy between two transversal components, and for beams with circular polarization energy is pumped from an initial beam into the vortex beam of the second order and vice-versa. The received dependence allows to select parameters of an incident beam with length of a crystal for full transformation to the vortex beam. For Gaussian beams similar periodic changes have nonlinear character. Laguerre-Gaussian laser modes with high radial order show a behavior close to Bessel beams on small distances. With increase of a distance the length of a period is increasing and the beam is astigmatically deforming.
Special aspects of subwavelength focal spot measurement using near-field optical microscope
Authors:   Image Processing Systems Institute of the Russian Academy of Sciences, Stafeev S. , Kotlyar V. ,   Image Processing Systems Institute of the Russian Academy of Sciences
Published: September 2016

In this paper we numerically and experimentally investigated the influence of the hollow pyramidal shape NSOM cantilever to the measured characteristics of subwavelength focal spot. Using linearly polarized Gaussian beam with wavelength 633 nm and Fresnel zone plate with focal length 532 nm it was shown that hollow cantilever with angle 70° and nanoaperture 100 nm detects preferably the transverse component of the electric field. The focal length was equal to 0,36λ, the smallest focal spot diameter was (0,40±0,02)λ, the depth of focus was 0,59λ and the diffractive efficiency was 12%.
The algorithm for copy-move detection on digital images
Authors:   Image Processing Systems Institute of the RAS, Glumov N. , Kuznetsov A. ,   Image Processing Systems Institute of the RAS, Myasnikov V. ,   Image Processing Systems Institute of the RAS,   S.P. Korolyov Samara State Aerospace University (National Reseach University)
Published: September 2016

In the paper, we propose two algorithms for undistorted copy-move regions’ (coincident rectangular fragments) detection on digital images. Both algorithms represent pixels’ data as the hash function value, which is built using two different mathematical principles: probability-theoretical and number-theoretical. The comparison of the proposed algorithms, as well as recommendations for their use is also proposed in this paper.
Optimization of kernel weights for error diffusion halftoning method
Authors:   Image Processing Systems Institute of the RAS, Fedoseev V. ,   S.P. Korolyov Samara State Aerospace University (National Reseach University)
Published: September 2016

This paper describes a study to find the best error diffusion kernel for halftone screening under various restrictions on the number of non-zero coefficients and their set of values. As an objective measure of quality WSNR was used. The problem of multidimensional optimization was solved numerically using several well-known algorithms: Nelder–Mead, BFGS, etc. The study found a kernel function that provides a quality gain of about 5% in comparison with the best of the commonly used kernel introduced by Floyd and Steinberg. Other obtained kernels allows to significantly reduce the computational complexity of the algorithm without reducing its quality. Since the method of error diffusion, significantly outperforming the methods used in the printing industry by quality, though not widely used in this area because of the relatively low speed, the results obtained in this work can contribute to improving its use.
Method of automatic adaptive control of image acquisition process in real time text label recognition systems
Authors:   LLC Mallenom Systems, Cherkas P. , Tsarev V. ,   LLC Mallenom Systems,   Institute of Management and Information Technologies (branch) of Federal Public Budgetary Educational Institution of Higher Education "St. Petersburg State Polytechnic University"
Published: September 2016

We described the method of automatic adaptive control of image acquisition process in real time text label recognitions systems. Were described algorithms of assessment of text label images quality and algorithms of automatic control of image acquisition device parameters at such systems. Were presented recommendations of image acquisition device choice and criteria of the control module efficiency.
Classification of binary quasicanonical number systems in imaginary quadratic fields
Authors:   Image Processing Systems Institute of the RAS, Bogdanov P. , Chernov V. ,   Image Processing Systems Institute of the RAS
Published: September 2016

In this paper all possible binary quasicanonical number system in imaginary quadratic fields are considered. For representation of algebraic integers of imaginary quadratic fields in the specified number systems an algorithm based on the division with remainder is used. In addition, the algorithms of the basic arithmetic operations in these number systems are synthesized.
Study of subwavelength localization of a radiation by forming closely spaced singular lines using of subwavelength features of the dielectric micro-relief
Authors:   Image Processing Systems Institute of the RAS, Degtyarev S. , Khonina S. ,   Image Processing Systems Institute of the RAS
Published: September 2016

The possibility of formation of closely spaced singular lines using subwavelength details of the dielectric micro-relief is examined. A numerical simulation shows that the diffraction pattern for the subwavelength ridge and groove (size of 0,2λ) are drastically different: the ridge shows the focusing properties, and the groove acts as a barrier. Micro-relief with specific combinations of phase steps, corresponding to a phase shift of p, allows to achieve the sub-wavelength localization of radiation (FWHM = 0,36λ). Further narrowing the distance between the singular lines leads to loss of energy in the central region and growth of the sidelobes. Simulations were performed using the finite element method, implemented in the Comsol software product.
Diffraction of a gaussian beam on the generalized lens
Authors:   Image Processing Systems Institute of Russian Academy of Sciences, Khonina S. , Ustinov A. ,   Image Processing Systems Institute of Russian Academy of Sciences
Published: September 2016

We consider diffraction of a Gaussian beam on the generalized parabolic lens with an arbitrary degree in paraxial approach using the stationary phase method. It is shown, that the method in this case corresponds to local approximation of any phase function of an optical element by the linear axicon with a varying angle of an inclination. Comparison of diffraction of a Gaussian beam and the bounded plane wave has shown, that suppression axial intensity oscillations at Gaussian apodization leads generally to reduction of longitudinal extent of focal area and to spreading of the central light spot.
Efficient linear local features based copy-move detection algorithm
Authors:   Image Processing Systems Institute of the RAS, Kuznetsov A. , Myasnikov V. ,   S.P. Korolyov Samara State Aerospace University (National Reseach University),   Image Processing Systems Institute of the RAS
Published: September 2016

In this paper we propose a new algorithm to detect copy-move matching parts on digital images. The algorithm uses a representation of the image’s analyzed region as the value of a specially selected hash function. Actually, the hash function is constructed using the effective linear local features. The developed algorithm is compared with existing algorithm based on CRT, the recommendations are given.
Localization of objects contours with different scales in images using hough transform
Authors:   Image Processing Systems Institute of the Russian Academy of Sciences, Fursov V. ,   S.P. Korolyov Samara State Aerospace University (National Research University), Bibikov S. ,   Image Processing Systems Institute of the Russian Academy of Sciences,   S.P. Korolyov Samara State Aerospace University (National Research University), Yakimov P. ,   Image Processing Systems Institute of the Russian Academy of Sciences,   S.P. Korolyov Samara State Aerospace University (National Research University)
Published: September 2016

This paper considers the problem of localization of objects in images, when the scale of the sought for object is different from the scale of the sample object. We use the feature of the Hough transform to form the response in the shape of lines in the accumulator space; these lines correspond to the straight-line sections of the object’s contour. The paper contains the results of the formation of the responses in the accumulator space for some simple geometric figures. We introduce the technology of traffic signs localization, based on the considered approach.
Diffraction of light beam on microstructured fiber
Authors:   Mogilev State A. Kuleshov University, Sotsky A. , Belskaya O. ,   Mogilev State A. Kuleshov University, Sotskaya L. ,   Belarusian-Russian University
Published: September 2016

A method based on the Green's theorem and the Graph’s addition theorem is used to construct a solution of 2D problem on lateral diffraction of a light beam on a microstructured fiber. It is shown that the solution can be used for computing the angular distribution of the far field intensity in the case of three-dimensional beam diffraction on a microstructed fiber. Diffraction fields appeared at illumination of microstructured fibers by TE and TM polarized Gaussian beams are analyzed.
Computer diagnosis of tumors in mammograms
Authors:   Murom Institute (branch) of the Federal State Budget Institution of Higher Professional Education ", Sadykov S. ,   Vladimir State University Alexander G. and Nicholas G. Stoletovs", Bulanova Yu. ,   Murom Institute (branch) of the Federal State Budget Institution of Higher Professional Education "Vladimir State University Alexander G. and Nicholas G. Stoletovs", Zakharova E. ,   Nonstate Health Care Facility “Departmental Hospital at the station Murom Open Joint Stock Company “Russian Railways”
Published: September 2016

This paper proposes a technology of computer diagnosis of tumors in mammary gland of three main types: cyst, fibroadenoma, and breast cancer. It is noted that the use of such technology in the health care setting reduces the chance of missing a tumor when viewing mammograms, are at an early stage of development, but also minimizes the subjectivity of diagnosis. Work on a set of technologies studied real mammograms from MIAS database with known diagnoses. The results of experiments that show the possibility of using the developed based on this technology integrated cabinet in mammography as for general research and well as for screening.
Fractal discrete cosine transform on pre-fractal domains associated with fundamental domains of canonical number systems
Authors:   Image Processing Systems Institute of the Russian Academy of Sciences, Kasparyan M. ,   S.P. Korolyov Samara State Aerospace University (National Research University)
Published: September 2016

Introduce an analog cosine transform on the pre-fractal region. From fractal discrete Fourier transform output discrete cosine transform on two-dimensional domains associated with the fundamental domains of number systems in imaginary quadratic rings. It is shown that this transformation is orthogonal.
Distance of diffraction-free propagation of the bounded airy beam
Authors:   Image Processing Systems Institute of the Russian Academy of Sciences, Kotlyar V. ,   S.P. Korolyov Samara State Aerospace University (National Research University), Kovalev A. ,   Image Processing Systems Institute of the Russian Academy of Sciences,   S.P. Korolyov Samara State Aerospace University (National Research University), Zaskanov S. ,   Image Processing Systems Institute of the Russian Academy of Sciences,   S.P. Korolyov Samara State Aerospace University (National Research University)
Published: September 2016

We obtain explicit equations for the distance at which the Airy beam, limited in initial plane (from the side where amplitude drops slowly), propagates along the parabolic trajectory without changing its amplitude (i.e. almost diffraction-free). Analogical distance for diffraction-free Bessel beam is proportional to the radius of the circular diaphragm which limits the beam and inversely proportional to the tangent of the slope of the conical wave which generates the Bessel beam. This distance is wavelength-independent. For the Airy beam this distance is proportional to the square root of the module coordinate of the diaphragm edge and inversely proportional to the wavelength of light.
Analysis of flat beam diffraction by divergent fracxicon in nonparaxial mode
Authors:   Image Processing Systems Institute of the Russian Academy of Sciences, Ustinov A. ,   S.P. Korolyov Samara State Aerospace University (National Research University), Khonina S. ,   Image Processing Systems Institute of the Russian Academy of Sciences,   S.P. Korolyov Samara State Aerospace University (National Research University)
Published: September 2016

Theoretical and numerical analysis of flat beam diffraction by fracxicon with value of power less than unity are performed within the nonparaxial scalar model. Using integration by parts of the Rayleigh-Sommerfeld integral of first type and applying the modified method of stationary phase we obtain the expression of the axial complex distribution satisfying the boundary conditions for on the optical axis. The results obtained by numerical integration show good agreement with analytical estimates. Numerical examples show that the divergent fracxicon allows to form an extended axial light line with diameter of the order of the wavelength longer and more uniform than provides a linear axicon.
The estimation of the traffic flow parameters based on the videoregistration data analysis
Authors:   Image Processing Systems Institute of the Russian Academy of Sciences, Kopenkov V. ,   S.P. Korolyov Samara State Aerospace University (National Research University), Myasnikov V. ,   Image Processing Systems Institute of the Russian Academy of Sciences,   S.P. Korolyov Samara State Aerospace University (National Research University)
Published: September 2016

The paper deals with the matters of development and investigation of algorithms and information technology of analysis of digital video stream of vehicles in order to detect objects on the sequence of images in the real-time mode and define the parameters of car traffic, the car speed (the average speed of a car in a given period) and the traffic density (number of vehicles per unit time).
Method of forming a digital watermark for physical and electronic documents
Authors:   Omsk State Technical University, Sagaydak D. , Faizullin R. ,   Omsk State Technical University
Published: September 2016

In this paper we proposed a universal method for forming the watermark for both physical and electronic documents. Such a watermark can be used for authentication of documents, as well as for secure communication. For both cases we described the procedure for exchange of information between two parties. The analysis of the complexity of detecting the presence of the watermark and extracting the embedded information by a third party was performed, and it showed operability of the proposed method.
Diffraction-free lommel beams
Authors:   Image Processing Systems Institute, Russian Academy of Sciences, Kovalev A. ,   Samara State Aerospace University, Kotlyar V. ,   Image Processing Systems Institute, Russian Academy of Sciences,   Samara State Aerospace University
Published: September 2016

We consider a new family of nonparaxial diffraction-free laser beams with their complex amplitude being proportional to the n-th order Lommel function of two variables. Therefore, these beams are called Lommel beams (L-beams). We obtained explicit analytical expressions for the angular spectrum of plane waves and for the orbital angular momentum of the L-beams. Transverse intensity of the L-beams has a reflective symmetry with respect to both Cartesian coordinate axes. Since transverse intensity distribution of L-beams does not change upon propagation, L-beams are modes of free space (L-modes). Functions of complex amplitudes of even (n = 2p) and odd (n = 2p + 1) L-modes are mutually orthogonal. For certain parameter, L-modes become traditional Bessel modes.
Structurally stable three-dimensional and two-dimensional laser half pearcey beams
Authors:   Image Processing Systems Institute, Russian Academy of Sciences, Kovalev A. ,   Samara State Aerospace University, Kotlyar V. ,   Image Processing Systems Institute, Russian Academy of Sciences,   Samara State Aerospace University, Zaskanov S. ,   Image Processing Systems Institute, Russian Academy of Sciences,   Samara State Aerospace University
Published: September 2016

We obtain a new solution of the paraxial Helmholtz equation that describes a family of three-dimensional and two-dimensional structurally stable half-Pearcey beams (HP-beams). HP-beams generalize Pearcey beams obtained in Opt. Express, 20, 18955 (2012), since these Pearcey beams can be considered as the sum of two first-order HP-beams. Three-dimensional HP-beams have angular spectrum of plane waves, which is non-zero at a half of parabola. For functions of HP-beams complex amplitudes, the orthogonality properties have been revealed. For two-dimensional HP-beam acceleration and deceleration of trajectory has been shown for areas before and beyond the focal plane respectively.
Eigen modes of planar chiral waveguides
Authors:   Volgograd State University, Moiseeva N.
Published: September 2016

We find explicit expressions for plane waves in chiral media. Is shown that in the chiral medium between the TE and TM waves type of energy is exchanged during spreading, as well as the reflection from the boundaries of chiral medium with dielectrics. The waves of the right and left circular polarization also in a chiral medium interact. Is shown that waves propagating in a chiral medium without interaction to be found by selecting the appropriate basis of polarization. Using the coordinate transformation we obtain a basis of two waves of elliptical polarization. These waves in the planar chiral waveguide are independent. The reflection matrix received for the basic waves at the "chiral medium-insulator." The calculation of the dispersion curves for independent eigenwaves of elliptical polarization in the chiral planar waveguide.
Solution in quadratures of expanded pulse – propagation equation for optical fibers for an arbitrary nonlinearity
Authors:   Samara State Aerospace University, Alimenkov I. , Pchelkina Yu. ,   Samara State Aerospace University
Published: September 2016

We found in quadratures the solution of expanded pulse – propagation equation for optical fibers for an arbitrary nonlinearity.
Modeling action of a hyperspectrometer based on the offner scheme within geometric optics
Authors:   Image Processing Systems Institute, Russian Academy of Sciences, Kazanskiy N. ,   Samara State Aerospace University, Kharitonov S. ,   Image Processing Systems Institute, Russian Academy of Sciences,   Samara State Aerospace University, Karsakov A. ,   Image Processing Systems Institute, Russian Academy of Sciences,   Samara State Aerospace University, Khonina S. ,   Image Processing Systems Institute, Russian Academy of Sciences,   Samara State Aerospace University
Published: September 2016

We considered comparative modeling action of a hyperspectrometer based on the Offner scheme including prisms or a diffraction grating within the geometrical optics. It is shown that the use of a diffraction grating instead of a prism results in a more uniform spread of the spectral components of the dispersed image.
Anomaly detection for hyperspectral imaginary
Authors:   Image Processing Systems Institute, Russian Academy of Sciences, Denisova A. ,   Samara State Aerospace University, Myasnikov V. ,   Image Processing Systems Institute, Russian Academy of Sciences,   Samara State Aerospace University
Published: September 2016

In this paper authors offered several algorithms for anomaly detection on hyperspectral images. Algorithms used different ideas to describe anomalies. A comparison between offered in article algorithms and RXD-detector was provided. An advances of proposed solutions were overviewed.
Algorithms of linear spectral mixture analysis for hyperspectral images using base map
Authors:   Image Processing Systems Institute, Russian Academy of Sciences, Denisova A. ,   Samara State Aerospace University, Myasnikov V. ,   Image Processing Systems Institute, Russian Academy of Sciences,   Samara State Aerospace University
Published: September 2016

The authors propose two algorithms of linear spectral mixture analysis for hyperspectral images using base map. Base map data are used to refine coefficients of spectral mixture on the edges of map objects (in first algorithm) and acquire spectral signatures of small objects (in second algorithm), that does not occupy any pixel on input image entirely. The set of mixed signatures may be already known with undefined coefficients or unknown with extraction on one of the stages of the algorithm.
Spectrum shape elements model for correction of multichannel images
Authors:   Image Processing Systems Institute, Russian Academy of Sciences, Nikonorov A. ,   Samara State Aerospace University
Published: September 2016

This paper presents the spectral-shape elements model for correction of non-isoplanatic deviation in the scene illumination. I propose an identification of the correction function on the set of spectral shape elements with the Hausdorff metric. Also a necessary condition which allows to obtain an adequate form of the color correction function is presented. The experiments performed on real images confirm the high quality of the proposed color correction technique with respect to well-known Retinex method.
Research of the discrete orthogonal transformation received with use the dynamics of cellular automata
Authors:   Tomsk State University of Control Systems and Radioelectronics, Evsutin O.
Published: September 2016

This paper is aimed at receiving orthogonal bases families from the evolving states of cellular automata. I suggest a comparison technique of the appropriate orthogonal transformations in respect of noises, shown as a result of information losses on the restored data elements.
Dimension of some fractal sets on hexagonal lattices
Authors:   Image Processing Systems Institute, Russian Academy of Sciences, Bogdanov P. ,   Samara State Aerospace University, Chernov V. ,   Image Processing Systems Institute, Russian Academy of Sciences,   Samara State Aerospace University
Published: September 2016

In this paper fractal dimension of fundamental domain boundary for all possible ternary quasicanonical numerical system in the ring of Eisenstein integers is calculated. Modified method that was used by W. Gilbert and J. Thuswaldner for computing of fundamental domain boundary fractal dimension for canonical numerical system is considered.