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Showing 1 to 20 of 47 for “"numerical computation"”.
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Numerical computation of perturbation solutions of nonautonomous systems
A numerical investigation of 2n first-order Hamilton's equations, which describe the motion of a dynamical system, has been conducted using Galerkin's approximations and a derivative-free analogue of Newton's iteration method. Furthermore, the motion stability of a dynamical system in the …
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Dependent Risk Modelling and Ruin Probability: Numerical Computation and Applications
… model and the dual risk model, including the numerical evaluation of the explicit expressions for these quantities and the application of the probabilistic results obtained. We first investigate the numerical properties of the formulas for the finite-time ruin probability derived by Ignatov …
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Chebyshev Series Expansion of the Solution of Kepler's Equation and Its Numerical Computation
Made available in DSpace on 2014-12-11T18:24:11Z (GMT). No. of bitstreams: 1 7500355.pdf: 1711155 bytes, checksum: 69982c5b61ac73d3a5edaa082c70b175 (MD5) Previous issue date: 1974
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Approximation and control of a thermoviscoelastic system
… control problem for L2 kernels. We carry on the numerical computation to investigate the effect of heat transfer on damping and the closed-loop system.
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Cavity flow past an obstacle including gravity effects
… free boundaries systematically and to facilitate numerical computation. The Helmholtz-Kirchhoff cavity model is used in this study, with sixteen primary cases analyzed. The computer results are plotted and the computer listing is given. From the results, it is found that the Helmholtz-Kirchhoff …
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Applications of Lie Groups in Turbulence Modeling
… model's PDEs for submerged free plane jets. A numerical simulation is performed on the subsequent system of ODEs obtained from this model. The results for the turbulent properties obtained from the numerical computation are in good agreement with the similarity profiles obtained from the …
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Analysis on the use of EM algorithm for space time coding in fading channels
… of 128 symbols. Using theoretical analysis and numerical computation, it is shown that the EM algorithm receiver designed for Rayleigh fading is effective in reducing the BER performance in Rician fading channel. The EM algorithm receiver is studied in flat, fast fading channel for various pilot …
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Electrodynamic Green's Functions in Layered Media: Accurate Closed -Form Approximations for Both Electric and Magnetic Sources
… value problem at hand and its impact on the numerical computation of the Green's function, making the computer tool quite general and very user-friendly.
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Design and prototype of an all digital system for baseband FM multiplex signal demodulation
… design architecture is simulated using Scilab numerical computation software; implemented in Verilog Hardware Description Language; and tested using the digital to analog converters (DACs) on the Xilinx Spartan-3AN Starter Kit. The oscilloscope images at the end of this report show that the …
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Greedy Algorithms In Approximation Theory and Compressed Sensing
… applications such as signal/image processing and numerical computation. One of the fundamental questions in this consideration is how to construct good methods (algorithms) of approximation, and how to measure the performance of these methods. One of the most successful approaches in this area is …
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Design of a hermetically sealing inlet for in-situ planetary exploration
… the inlet, using Finite Element Analysis and numerical computation. The design successfully meets the majority of the fundamental requirements. The modularity and low required actuation force of the design are applicable to many current and future space instruments.
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High-performance matrix multiplication on Intel and FGPA platforms
… is at the core of high-performance numerical computation. Software methods of accelerating matrix multiplication fall into two categories. One is based on calculation simplification. The other one is based on increasing the memory access efficiency. Also matrix multiplication can be …
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Dynamical behavior of graphene models
… the system's Hamilton equations of motion, whose numerical solution determine the dynamical behavior of graphene, as well as the so-called variational equations needed for the numerical computation of several chaos indicators like the maximum Lyapunov Characteristic Exponent.
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Numerical Simulation of Shock Wave Propagation in Ducts with Grooves
… and pressure attenuation is investigated. The numerical method is validated through several test cases, and the results are compared against the theory and the experimental measurements. Good agreement between high resolution computations and the experiment is obtained for the shock speeds and …
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A numerical method for electro-kinetic flow with deformable interfaces
… time scales are studied both analytically and numerically. We address a significant challenge in the numerical computation of such flows in the thin-double-layer limit, by using the slenderness of the layer to develop a fast and accurate 'hybrid' or multiscale numerical method. The method …
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Development and applications of hypersingular boundary integral equations for three-dimensional acoustics and elastodynamics
… emerged as a powerful alternative tool to other numerical methods for many problems in engineering. The hypersingular BIE's, which are derivatives of conventional BIE's, are indispensable for the analyses of many problems in mechanics by BIE/BEM, such as wave scattering, crack problems, plate …
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Applications of nanoimprinted structures to organic photovoltaics
… the OPV active layer has been demonstrated via numerical computation methods, including COMSOL FEM and Lumerical FDTD. The challenge to fabricate a working device by using nanoimprinting to create the structures in a conductive polymer will be presented, where the nanoimprinting process is …
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Physical controls on water flow and solute transport in coastal aquifers
… For the investigation of wave effects, a Computational Fluid Dynamics (CFD) modeling tool, Fluent, is used to simulate wave- induced sea level oscillations. A flow-averaged approach is developed to generalize wave motions acting onto the beach for the sake of the feasibility of numerical …
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