Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 89 for “"Numerical algorithm"”.
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Numerical algorithm for the decomposition of linear systems
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1984.
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A circuit model for diffusive breast imaging and a numerical algorithm for its inverse problem
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Design of a heat transfer subsystem using a real time expert system
… for a given level of power output, using a numerical algorithm; An expert tool, G2 developed by the Gensym Corporation is used in creating the application knowledge base. The application development mainly concentrates on the piping network, the heat exchanger system, and the pumping system. …
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Drazin inverse and its application to linear degenerate systems
… degenerate systems is presented. Furthermore, a numerical algorithm for calculating Drazin inverses and a FORTRAN program are provided.
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Numerické metody pro rekonstrukci chybějící obrazové informace
… the use of appropriate Mathematical theory and numerical algorithm to reconstruct missing information. The result of this implementation is the reconstruction of missing image information. The thesis also compares different numerical methods, and see which one of them perform best in terms of …
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Spectral continuation study of the temporally periodic solitons of the damped-driven nonlinear Schrödinger equations
… we develop and employ a spectral continuation algorithm, implemented in AUTO, to study the temporally periodic spatially localised soliton solutions of the driven, damped nonlinear Schrödinger equations, both in the case of parametric driving and direct driving. We hope that this study is of …
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Methods of fast Fourier transform in diffraction problems of elastic and acoustic waves with applications to crack mechanics
… a preconditioning. This leads to a quasi-linear numerical algorithm. 2) Applications are constructed in crack mechanics. Two problems are studied with their mechanical conclusions: (i) Diffraction of a planar acoustic wave by a planar crack in the classical linear elastic isotropic space; (ii) …
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4D combustion and flow diagnostics based on tomographic chemiluminescence (TC) and volumetric laser-induced fluorescence (VLIF)
… cameras placed at different orientations. A numerical algorithm is then applied on the data recorded to reconstruct the 4D flame structure. For the VLIF technique, a laser is used to excite a specific species in the flow or flame. The excited species then de-excite to emit light at a …
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An Algorithm for the Detection and Integration of Highly Oscillatory Ordinary Differential Equations Using a Generalized Unified Modified Divided Difference Representation
This thesis describes an algorithm which automatically integrates systems of ordinary differential equations which have highly oscillatory solutions. Natural variable step derivations of the Generalized Adams and Generalized BDF methods are presented. An efficient numerical algorithm for the …
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Algoritmo numérico para projeto de sistemas hidráulicos
This work aims at the development of a algorithm within the Fluids Mechanical area to the computational installations and hydraulic systems design. It mainly consists of the development of a method of hydraulic systems design compatible to the use of computational methods connected with the design …
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Next-Generation Flash Memories Using Two-Dimensional Materials
… using the Poisson-Schrodinger equation; the numerical algorithm is based on the Newton-Raphson (NR) method. A comparative study is done on two different Floating Gate Transistor (FGT) based on the proposed model. Silicon dioxide (SiO₂) and Hafnium dioxide (HfO₂) are the two oxides explored as …
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Numerical Simulations of Stokes Flow by the Iterations of Boundary Conditions and Finite Difference Methods
… together with the well known Finite difference numerical method to solve the Stokes problem over a rectangular domain as well as in irregular domain. The iteration of boundary conditions method has been applied to the Stokes problem in a rectangular domain, 2 <x< 2 , d 2 < y < d 2 , by the …
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Principios variacionales y soluciones numéricas en elasto-visco-plasticidad
… above boundary value problan are also deduced. A numerical algorithm based on the Finit Element Method and the Euler's Method, for the spacial and time cretizations respectively is presented. The algorithm in then used to obtain approximate solutions in elasto-plasticity, secundary creep and …
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A Guidance Algorithm for Unmanned Surface Vehicle Exhibiting Sternward Motion
… a new dynamically feasible trajectory generation algorithm that incorporates sternward motion for unmanned surface vehicles. This work is motivated by riverine applications where the operating environment is large and poorly known. We extend a navigation approach for forward path planning into a …
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Fuel-optimal space-flight transfer solutions through a redundant adjoint variable transformation
… in the position and velocity space) leads to a numerical algorithm which seems to be quite robust in finding candidate optimal control solutions for space transfer problems.
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Patched grid solutions of the two dimensional Euler and thin-layer Navier-Stokes equations
… are written in the integral form and the basic numerical algorithm is finite volume. The method is capable of first through third order accuracy in space. The flux vectors associated with the Euler equations are split into two sub-vectors (based on the signs of the characteristic speeds) and …
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Dynamics of Nonlinear Diffusion Processes
… equation will be performed in order to test a numerical algorithm that can solve the nonlinear diffusion equation and look at the processes of interest with sufficient accuracy. Once the algorithm is tested and shows good resolution it is used to solve the nonlinear equation. The post …
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Diffusion kinetics and phase separation phenomena during asymmetric membrane formation
… has been developed by using an improved numerical algorithm based on a modification of the jump mass balance equations. This approach enables accurate calculations of precipitation times and concentration profiles on both the polymer film and coagulation bath sides before the onset of …
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