Global ETD Search
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Showing 1 to 11 of 11 for “"iterative solutions"”.
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Efficient projection space updates for the approximation of iterative solutions to linear systems with successive right hand sides
… solution can dramatically speed convergence of iterative solvers. In the case of successive right hand sides, it has been shown that accurate initial solutions may be obtained by projecting the newest right hand side vector onto a column space of recent prior solutions. We propose a technique to …
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Use of Machine Learning for Automated Convergence of Numerical Iterative Schemes
… occurs when a sequence of increasingly refined iterative solutions approaches a value consistent with the modeled phenomenon. Approximations using iterative schemes need to satisfy convergence criteria, such as reaching a specific error tolerance or number of iterations. The schemes often bypass …
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Transmission Strategies for Wireless Multi-user, Multiple-Input, Multiple-Output Communication Channels
… difficult. This work proposes two classes of solutions to this problem. First, by forcing some or all of the interference to zero, it is possible to achieve a sub-optimal solution in closed-form. Second, a class of iterative solutions can be derived by extending optimal algorithms for …
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Image reconstruction on electrical resistance tomography measurements in a settling process
… the Newton-Raphson (NR) Algorithm, which employs iterative solutions of the Finite Element Method (FEM) in order to converge to a solution for conductivity. FEM is a numerical simulation method that discretises a region into elements and performs a global optimisation or minimisation in order to …
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A new computationally facile approximation of electrostatic potential suitable for macromolecules
… as a means of improving the convergence of iterative solutions is investigated and found to be quite promising.
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Development of a Student Operated Production Facility using Discrete Event Simulation and Continuous Improvement
… factories and various types of waste. Strategic, iterative solutions were then formulated and implemented, driving significant improvements over time. The project incorporated 5S methodologies, laying the groundwork for a continuous improvement program, and executed a Kaizen event focusing on the …
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Unsteady adjoint analysis for output sensitivity and mesh adaptation
… unsteadiness when solved with time-inaccurate iterative solvers. It is demonstrated that unconverged steady flow calculations, even with small output unsteadiness, can lead to significant variability in the estimated output sensitivity due to the arbitrary choice of unconverged state upon which …
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A study of magnetic non-linearity and finite length effects in solid iron subjected to a travelling MMF wave
… at the axial centre of the machine to avoid iterative solutions. In the linear three-dimensional analysis, the primary excitation in the passive end-regions of the machine is set equal to zero and the secondary end faces are developed onto the air-gap surface. The analyses, and the …
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Results of true-anomaly regularization in orbital mechanics
… governing equations are of main interest. When solutions of the linear regular equations in the true-anomaly domain are examined, it is found that the initial value and boundary value problems of unperturbed motion, typically requiring iterative solutions of the time equation, can be solved with …
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Approximation of the Scattering Amplitude using Nonsymmetric Saddle Point Matrices
<p>In this thesis we look at iterative methods for solving the primal (<strong>A</strong>x = b) and dual (<strong>A</strong><em><sup><strong>T </strong></sup></em>y = g) systems of linear equations to approximate the scattering amplitude defined by g<em><sup><strong>T</strong></sup></em>x …
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Modelling and inference in active systems
… Using Jacobi's method, we analytically derive iterative solutions for these quantities, once again starting from the direct boundary integral formulation of Stokes flow. We exemplify our results by explicitly providing the dynamics of an axisymmetric squirmer in the vicinity of a plane …