Most cited papers (RSCI)

181. Dunyushkin D.Y.
     Test-signals forming method for correlation identification of nonlinear systems
     Computer Research and Modeling, 2012, v. 4, no. 4, pp. 721-733

     Тhe new test-signals forming method for correlation identification of a nonlinear system based on Lee–Shetzen cross-correlation approach is developed and tested. Numerical Gauss–Newton algorithm is applied to correct autocorrelation functions of test signals. The achieved test-signals have length less than 40 000 points and allow to measure the 2nd order Wiener kernels with a linear resolution up to 32 points, the 3rd order Wiener kernels with a linear resolution up to 12 points and the 4th order Wiener kernels with a linear resolution up to 8 points.

     Keywords: nonlinear dynamic systems, Volterra–Wiener approach, system identification, cross-correlation approach, Lee–Shetzen method, test-signals, white noise.
     Views (last year): 1. Citations: 3 (RSCI).
182. Krasnikov G.Ya., Zaitsev N.A., Matyushkin I.V., Korobov S.V.
     The peculiarities of cellular automata visualization in nanoelectronics
     Computer Research and Modeling, 2012, v. 4, no. 4, pp. 735-756

     The general formalization of visualization models in cellular automata (CA) scope is presented, their classification is examined. It also describes possible approaches to the sound scales generation. We consider special cases of visualization manners for CA of various dimensions. By a simple 3D CA example the features of nanoscale systems imaging are indicated.

     Keywords: cellular automata, visualization, nanotechnology, modeling, multimedia.
     Views (last year): 3. Citations: 3 (RSCI).
183. Maslovskaya A.G., Sivunov A.V.
     The use of finite element method for simulation of heat conductivity processes in polar dielectrics irradiated by electron bunches
     Computer Research and Modeling, 2012, v. 4, no. 4, pp. 767-780

     The paper describes the results of computer simulation of time-dependent temperature fields arising in polar dielectrics irradiated by focused electron bunches with average electron energy when analyzing with electron microscopy techniques. The mathematical model was based on solving several-dimensional nonstationary heat conduction equation with use of numerical finite element method. The approximation of thermal source was performed taking into account the estimation of initial electron distribution determined by Monte-Carlo simulation of electron trajectories. The simulation program was designed in Matlab. The geometrical modeling and calculation results demonstrated the main features of model sample heating by electron beam were presented at the given experimental parameters as well as source approximation.

     Keywords: simulation, finite element method, electron irradiation, polar dielectric, thermal conductivity process.
     Views (last year): 5. Citations: 3 (RSCI).
184. Lobasov A.S., Minakov A.V.
     Numerical simulation of heat and mass transfer processes in microchannels using CFD-package σFlow
     Computer Research and Modeling, 2012, v. 4, no. 4, pp. 781-792

     This article is dedicated to numerical modeling of heat and mass transfer processes in microchannels. Microchannels are channels, that characteristic diameter is about 100 μm. Interest to the study of processes in them is growing every year, due to the rapid development of microfluid technique. The study was conducted using the software package σFlow. Isothermal and nonisothermal flows in microchannels of various configurations were considered. The obtained results were compared with available experimental and analytical data. In general for all problems a good agreement was obtained.

     Keywords: microchannels, CFD, mircofluid technique, numerical modelling.
     Views (last year): 4. Citations: 3 (RSCI).
185. Pogorelova E.A., Lobanov A.I.
     High Performance Computing for Blood Modeling
     Computer Research and Modeling, 2012, v. 4, no. 4, pp. 917-941

     Methods for modeling blood flow and its rheological properties are reviewed. Blood is considered as a particle suspencion. The methods are boundary integral equation method (BIEM), lattice Boltzmann (LBM), finite elements on dynamic mesh, dissipative particle dynamics (DPD) and agent based modeling. The analysis of these methods’ applications on high-performance systems with various architectures is presented.

     Keywords: blood, hemodynamics, nonnewtonian fluid, red blood cells, high performance computing.
     Views (last year): 2. Citations: 3 (RSCI).
186. Trifonova T.A., Sheremet M.A.
     Numerical simulation of unsteady conjugate natural convection in a cylindrical porous domain (Darcy–Boussinesq model)
     Computer Research and Modeling, 2013, v. 5, no. 2, pp. 179-191

     Mathematical simulation on unsteady natural convection in a closed porous cylindrical cavity having finite thickness heat-conducting solid walls in conditions of convective heat exchange with an environment has been carried out. A boundary-value problem of mathematical physics formulated in dimensionless variables such as stream function and temperature on the basis of Darcy–Boussinesq model has been solved by finite difference method. Effect of a porous medium permeability 10^–5≤Da<∞, ratio between a solid wall thickness and the inner radius of a cylinder 0.1≤h/L≤0.3, a thermal conductivity ratio 1≤λ_1,2≤20 and a dimensionless time on both local distributions of isolines and isotherms and integral complexes reflecting an intensity of convective flow and heat transfer has been analyzed in detail.

     Keywords: conjugate heat transfer, natural convection, Darcy–Boussinesq approximation, porous cylindrical cavity, transient regime, numerical simulation.
     Views (last year): 4. Citations: 3 (RSCI).
187. Grinevich A.A., Ryasik A.A., Yakushevich L.V.
     The dynamics of polynucleotide chain consisting of two different homogeneous sequences, divided by interface
     Computer Research and Modeling, 2013, v. 5, no. 2, pp. 241-253

     To research dynamics of inhomogeneous polynucleotide DNA chain the Y-model with no dissipation term was used. Basing on this model using numerical methods calculations were carried out, which have shown the behaviour of nonlinear conformational excitation (kink), spreading along the inhomogeneous polynucleotide chain, consisting of two different homogeneous nucleotide sequences. As numerical analysis shows there are three ways of behaviour of the nonlinear kink excitation spreading along the DNA chain. After reaching the interface between two homogeneous sequences consisting of different types of bases kink can a) reflect, b) pass the interface with acceleration (increase its velocity), c) pass the interface with deceleration (decrease its velocity).

     Keywords: solitons, DNA, Y-model, sine-Gordon equation, numerical methods.
     Views (last year): 1. Citations: 3 (RSCI).
188. Risnik D.V., Levich A.P., Bulgakov N.G., Bikbulatov E.S., Bikbulatova E.M., Ershov Y.V., Konuhov I.V., Korneva L.G., Lazareva V.I., Litvinov A.S., Maksimov V.N., Mamihin S.V., Osipov V.A., Otyukova N.G., Poddubnii S.A., Pirina I.L., Sokolova E.A., Stepanova I.E., Fursova P.V., Celmovich O.L.
     Searching for connections between biological and physico-chemical characteristics of Rybinsk reservoir ecosystem. Part 2. Determination analysis
     Computer Research and Modeling, 2013, v. 5, no. 2, pp. 271-292

     Based on contents of phytoplankton pigments, fluorescence samples and some physico-chemical characteristics of the Rybinsk reservoir waters, searching for connections between biological and physicalchemical characteristics is working out. The methods of describing of connections between qualitative classes of characteristics, based on forecast of quality values of one characteristics by quality values of another one, are studied. The borders of quality classes of studied characteristics are found.

     Keywords: fluorescence, phytoplankton, pigments, chlorophyll, Wallis coefficient, Guttman coefficient, Chesnokov coefficient, searching for connection, Rybinsk reservoir.
     Views (last year): 2. Citations: 3 (RSCI).
189. Ekomasov E.G., Gumerov A.M.
     Collective influence of impurities on the dynamics of kinks of modified sine-Gordon equation
     Computer Research and Modeling, 2013, v. 5, no. 3, pp. 403-412

     We investigated numerically the dynamics of kinks of modified sine-Gordon equation in the model with localized spatial modulation of a periodic potential (or impurity). We considered the case of two identical impurities. We showed the possibility of collective effects of the influence of impurities, which are heavily dependent on the distance between them. We demonstrated the existence of a certain critical value of the distance between impurities, which has two qualitatively different scenarios of the dynamic behavior of kink.

     Keywords: kink, breather, sine-Gordon equation, quasitunneling.
     Views (last year): 1. Citations: 3 (RSCI).
190. Borina M.Y., Polezhaev A.A.
     On the mechanisms for formation of segmented waves in active media
     Computer Research and Modeling, 2013, v. 5, no. 4, pp. 533-542

     We suggest three possible mechanisms for formation of segmented waves and spirals. These structures were observed in the Belousov–Zhabotinsky reaction dispersed in a water-in-oil aerosol OT microemulsion. The first mechanism is caused by interaction of two coupled subsystems, one of which is excitable, and the other one has Turing instability depending on the parameters. It is shown that, segmented spirals evolve from ordinary smooth spirals as a result of the transverse Turing instability. We demonstrate that depending on the properties of subsystems different segmented spirals emerge. For the second mechanism we suggest "splitting" of the traveling wave in the vicinity of the bifurcation point of codimension-2, where the boundaries of the Turing and wave instabilities intersect. Finally we show that the segmented waves can emerge in some simple two-component reaction-diffusion models having more than one steady state, particularly in a FitzHugh–Nagumo model.

     Keywords: segmented waves and spirals, excitable media, diffusion instability.
     Citations: 3 (RSCI).

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