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  • The loosely coupled algorithm of integrated INS-GPS navigation system of the vehicle

    The existing approaches to the integration of relatively cheap strapdown inertial navigation system (SINS) based on MEMS-based technology and satellite navigation systems (SNS) are ineffective in relation to motor vehicles. We consider the iterative algorithm for the loosely coupled mode of integration of heterogeneous navigation systems do not intend to use the optimal estimation. The solution is obtained on the basis of the fully nonlinear model of the navigation system of the vehicle and the, therefore, is valid for arbitrary and unknown in advance nature of his movements, and, in the most general assumptions about the level of disturbances acting upon him.

    Keywords: vehicle, integrated inertial navigation satellite system, loosely coupled iterative algorithm

  • Simulation of failures and their elimination on financial markets with the events flow generated by a binary tree

    A financial market on a stochastic basis with a filtration generated by the binary tree is considered. A plugin simulating failures on this market is constructed. We mean by a failure the following situation on the financial market: when passing from a time moment  to the next one new events arise but discounted price of the fixed type stock does not change. A failure generates the incompleteness of the market (the set of martingale measures of this market is infinite). By modelling of a weak deformation it is possible to reduce the set of martingale measures to a unique measure. Thereby the price of every contingent claim is uniquely determined. This price may be considered as "fair price".

    Keywords: Stochastic basis, probability measure, financial market, binary tree, arbitrage free, completeness, weak deformation, martingale measure, plugin.

  • Hybrid reverberation algorithm

    The technique of space-time processing of acoustic signals with the use a convolution algorithm the purpose of application of which is the spatial positioning of the virtual soun sourse (auralization) is com=nsidered in this article. Also the reverberation chatacteristics of a modeled acoustic environment are take into consideration.

    Keywords: auralization, HRTF, artificial reverb, room simulation, convolution algorithm, impulse response convolution, impulse response synthesis, dynamic convolution, complex filtering

  • Development simulator of wireless sensor network

    "This research focuses on the development of wireless sensor network simulator. The simulator is designed using multiagent model approach. For the software implementation the multi-agent simulation library MASON and the graph modeling, analysis and visualization library JUNG are used. The experimental research of simulator directed at the efficiency and precision estimation were carried out. The experiments were performed on networks of various sizes. The latest wireless technology and progress in chip manufacturing in the past few years allowed to move to the practical development and implementation of a new class of distributed communication systems - wireless sensor networks (WSN). The aim of this work is the creation of a wireless sensor network simulator, which makes it possible to simulate its operation in different modes, including using various routing protocols. This simulator is considered as the basis tool for analysis and optimization of wireless sensor networks. One of the objectives of the developed simulator is to analyze the impact of different routing protocols on the separate/overload nodes, involved in retransmission packets, sourced from other network nodes. The need to develop a simulator is due to the fact that the choice of many technical solutions arising in the design of information systems with the WSN can not be only based on laboratory tests conducted on a small network. Real information systems, such as environmental monitoring system, consist of a large number of nodes, which is impossible to reproduce in the laboratory . Therefore, the task of developing simulator WSN is relevant. Currently, there are several approaches and appropriate tools for simulation of wireless sensor networks. So, for the development of simulator, you can use the package modeling networks ns-2/ns-3 . This package is a general-purpose simulation system, strength of which is the possibility of a realistic simulation of the physical propagation of signals. However, the use of this system for simulation WSN requires writing extensions. Other than that ns--2/ns-3 allows only to simulate network, but can not stimulate the work of software nodes. Simulator TOSSIM is deprived of this deficiency . It allows to simulate the work as separate nodes, and large networks, consisting of hundreds or even thousands of nodes; and gives the developer the ability to analyze and test the code, which is designed for the real hardware. The compiler, included in TOSSIM, replaces the low-level application components that interact with hardware resources of the node with the components interacting with the implementations of these devices in the simulator. With this the simulator executes the same code as the real network nodes. However, the simulator has a relatively low productivity and is not suitable for multiple simulation of large sensor networks, which is essential in the development of tools to optimize WSN. Therefore, along with the use of this simulator , we decided to develop a simpler, but at the same time, more rapid and scalable simulator."

    Keywords: Wireless sensor networks, multi-agent simulation, simulation model, MASON, JUNG

  • On the synthesis of nanocomposite FeNi3/C under IR heating and its application to high-density magnetic recording

    The synthesis of nanocomposite FeNi3/C based on the PAN, FeCl3 · 6H2O and NiCl2 · 6H2O, whereby the first time by the IR heating at 400 ÷ 700 ° C obtained nanocomposite FeNi3/C FeNi3 particle size of 10 to 80 nm are uniformly distributed UM. Using thermodynamic calculations based on the minimization of the Gibbs energy, confirmed the synthesis of nanocomposite FeNi3/C at T=400 ° C reduction of Fe and Ni with H2, produced during the process of carbonization of polyacrylonitrile with infrared heating. Designed as a nano material of the films can be effectively used as a carrier material for a magnetic information recording superdense. Recording density is achieved in such a carrier (85-100) Gb/dyuym2. ​

    Keywords: nanocomposite, polyacrylonitrile, infrared heating, recording information, the magnetic properties, the carbon matrix

  • Topological defects are located on a spherical surface.

    The simulation of two-dimensional spherical crystals consisting of a large number of particles is carried out. These shells were analyzed based on their geometric structure and energy distribution. Various types of defects formed in a state of equilibrium  is considered. Being shown the ambiguity of the existing method of their interpretation. A new way of describing such defects in the close-packed two-dimensional crystals with different topology is suggested.  

    Keywords: topological defects, two-dimensional materials, spherical crystals, topological charge

  • Gold nanoparticles functionalisation by long-chain thiol and amine ligands: study of local atomic and electronic structure of ligand-gold bond

    In the present work we report on the study of local atomic and electronic structure of gold nanoparticles funnctionalised by thiol and amine containing long-chain ligands. The study of nanoscale atomic structure is performed by means of X-ray absorption spectroscopy (XANES: X-ray Absorption Near-Edge Structure) and computer simulation. In consequence of the experimantally obtained data analysis and computer simulation it was obtained that strong bonding takes place when 11-mercaptoundecanoic acid is bound to the gold nanoparticles surface, forming a chemical bond Au-S 0.25 nm in length. Weaker bonding is observed when forming bond between dodecylamine and gold nanoparticles surface atom resulting in Au-N bond 0.23 nm in length. Supplementary XANES spectra analysis by means of density functional theory reveals the nature of formation of the investigated nanoscale structure.

    Keywords: nanoscale structure of matter, X-ray absorption spectroscopy, XANES, density functional theory, nanoparticles functionalisation

  • Complex research of the composition and structural characteristics of the rock-forming minerals in Millerovsky bentonite clay

    This work deals with the integrated study of the composition and structural characteristics of the rock-forming minerals in Millerovsky bentonite clay. The qualitative and quantitative analysis of the clay samples is made by X-ray diffraction , X-ray photoelectron spectroscopy and thermal analysis . The morphological and microstructural features of minerals are investigated by scanning electron microscopy. The application of the method of direct theoretical calculation of the diffraction patterns is showm to determine the crystal-chemical parameters of the studied minerals. The results are aimed at explaining a number of physical and chemical properties of layered aluminosilicate.

    Keywords: clays, clay minerals, layered silicates, x-ray diffraction, crystalline systems

  • Research of basic aerodynamic properties of crushed straw material

    A widespread technology with deep litter floor with broilers. Promising material for bedding are the straw materials. However, straw, held a simple reduction, does not meet the zootechnical requirements, in particular the recommended length of the cut should be 50 mm to 150 mm. Thus, there arises the problem of fractionation straw, obtained at harvest crops as waste. We carried out an analysis of the different types of fractional chopped straw with nodal connections without them. Studies have been conducted on the behavior of these types in an air classifier with a velocity change .

    Keywords: The straw residues fractionation aerodinomicheskie performance, fly speed

  • Researching a profile of potential of an electrostatic field during a blizzard in the Alp zone as potential renewable micro power source

    Tendencies of technological improvement of electronic chips led to reduction of their sizes, weight, development of functionality and decrease in power consumption. It allows us to discuss questions of developing renewable micro power sources which can provide power supply of autonomous microelectronic and micro circuitry systems for charge indication, paying attention to snow transfer, etc. 
    The purpose of the paper is researching a profile of electrostatic field potential in the mountain district which was estimated as a possible use as a renewable micro power source.
    It is found out that on windward sides of snow relieves the potential of electrostatic field exceeds three times to a similar  indicator for lee sides and is 80 V.  The potential is 3,5kV on polymeric surfaces (Nylon, teflon).   

    Keywords: snow storming electricity, electrization, potential of electrostatic field, charge, the salting, the loaded particles of snow, innovation electronics, micro circuitry, renewable micro power sources.

  • Panoramic image stitching with handling the parallax effect for the known world model

    The short review of existing panoramic systems are given. The limits of such systems doesn't allow to form a panoramic video with dealing the parallax effect in real-time systems. The presented algorithm for forming a panoramic video is free of these disadvantages. An algorithm based on mathematical model of the round-view system that takes into account the location of cameras, their intrinsic parameters and model of the world. The algorithm includes following chain of coordinate transformation: from panoramic image coordinates to spherical coordinates and to Cartesian world coordinate system, from world coordinates to camera coordinate system and to input image coordinates. Geometric distortion of camera is dealt. Model of the world is represented as spherical and a hemispherical surfaces.

    Keywords: panoramic image, round-view video system, camera model, camera distortion, parallax

  • A new device for receiving surface runoff to wastewater network

    A new device was made to catch and receive surface runoff to sewerage system. The device increases wastewater flow and velocity in the wastewater networks which is provided by flushing and reducing decay of organic and inorganic substances in the networks.  

    Keywords: Device, surface runoff, flow, flushing, siltation

  • Study of the catalytic ability of the nanosized catalysts based on CeO2 during catalytic reaction

    The nano-catalyst ceria (CeO2), activated by Pt nanoparticles, is known for being prospective and efficient material widely used in catalysis, fuel elements, and sensors. One of the most up-to-date methods of catalysts' reasearch is X-ray absorption spectroscopy (XAS) that is sensitive to the chemical state of catalyst's active centers [1,2]. Using XAS in the fluorescense detection mode at CeL1 line with high precision we studied electronic structure of Pt-activated nanoparticles of ceria at various redox conditions. In order to detect partial X-ray fluorescence yield the emission line CeLγ3 was used, which allowed us to increase spectral resolution. We researched local atomic and electronic structure of the materials under study. Oxygen vacansies were found to appear on the nanoparticles surface of ceria at 5% CO He atmosphere. Theoretical modeling of the obtained spectra at CeL1-edge demonstrated good agreement with experiment.

    Keywords: X-ray absorption spectroscopy, HERFD, XAS, Ce-based catalysts, oxygen vacansies

  • Neuronetwork models in research problems construction designs

    The return coefficient task of determination of properties of a construction design by means of the device of neural networks is considered. As model the neural network in the form of a polutorasloyny predictor with possibility of iterative accumulation of volume is taken. Each subsequent step connected with addition of a new stream of neurons, is carried out only after training of the previous stream. Coefficients of synoptic communications pay off with the help of procedure of the return distribution from a condition of a minimum of function of an assessment. Algorithms of the solution of direct and return problems of multidimensional approximation are developed.

    Keywords: neural network, approximation, synoptic communications, return distribution, construction designs

  • Basic and additional assortment woody plants for green building in the south-west Rostov region

    The problem of formation of assortment of wood plants for the South-West of Rostov region. Proposed main and additional assortment of wood plants, including 159 species. In ассотимент included the most sustainable and eco-efficient exotic plants. The assortment includes species not damage the disease of family Betulaceae, toxic and invasive species (Amfora fruticosa, Ailanthus altissima, etc.).

    Keywords: green building, assortment of woody plants, Rostov region, introduction