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 88 for “"adaptive algorithm"”.
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Spatio-temporal adaptive algorithm for reacting flows
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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A 3-dimensional h-adaptive algorithm for species transport prediction
Development of 3-dimensional self-adaptive algorithms for unstructured finite element grids is recent to the solution of partial differential equations. An h-adaptive grid embedding method is employed to help solve the Navier-Stokes equations for fluid flow and scalar transport; This h-adaptive …
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A 3-dimensional H-adaptive algorithm for groundwater flow and contaminant transport
… transient equations. By utilizing unstructured adaptive meshing, concentration is accurately resolved; Benchmark cases were used to check the feasibility of GWADAPT3. The results of the test cases from GWADAPT3 were also compared with results from FEFLOW and FEHM; A simulation of the Yucca …
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A Novel Adaptive Algorithm for the Modeling and Regulation of Power Converters for Grid Applications
L'abstract è presente nell'allegato / the abstract is in the attachment
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Parametric design of an adaptive line enhancer for multiple switching tones in a correlated noise environment
… to a Lattice Filter can be used as an Adaptive Line Enhancer for sampled data consisting of multiple switching tones in correlated noise. A tradeoff analysis is performed with four methods of digital filtering including a conventional Digital Fourier Transform (DFT) algorithm, a Least …
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Adaptive Method of Approximate Particular Solution for One-Dimensional Differential Equations
<p>An adaptive algorithm for the Method Approximate Particular Solution (MAPS) using radial basis functions for solving boundary value problems is discussed in this work. The goal of the adaptive algorithm is to construct an optimal collocation points distribution that gives the required accuracy …
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Adaptive Compression Algorithm For Full Colour Three Dimensional Integral Images
… method of measurement of misalignment. An adaptive algorithm based upon the Discrete Cosine Transform is proposed, this algorithm utilises a dynamic mapping process, which arranges the data in such a way that the correlation effects are exploited efficiently. Simulation studies are …
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New architecture for RF power amplifier linearization
… solutions : two-point architecture and adaptive digital predistortion using a [delta sigma] modulator for automatic inversion of power amplifier nonlinearity. Two-point architecture can be seen as a solution that extends the linearization bandwidth of the traditional feedback …
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A New Adaptive Array of Vibration Sensors
… modal coordinates by a sensor gain matrix. An adaptive algorithm for computing the sensor gain matrix with minimal knowledge of the structure's modal properties is proposed. It is shown that the sensor gain matrix is the modal matrix of the segment output correlation matrix. This modal matrix …
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Combinatorial optimization by stochastic evolution with applications to the physical design of VLSI circuits
In this thesis, a new general adaptive algorithm for solving a wide variety of NP-Complete combinatorial problems is developed. The new technique is called Stochastic Evolution (SE). The SE algorithm is applied to Network Bisection, Vertex Cover, Set Partition, Hamilton Circuit, Traveling Salesman, …
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Introducing enhanced fully-adaptive routing decisions within Torus-Mesh and hypercube interconnect networks
… loads on these interconnection networks, fully-adaptive routing algorithms have been shown to exploit locality while balancing loads and softening the effects of hot-spots. One issue which has been overlooked is the impact of data traveling along the periphery of a selected minimal routable …
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Maximum Power Point Tracking Using Kalman Filter for Photovoltaic System
… method is based on the Kalman filter. An adaptive MPPT algorithm which uses an instantaneous power slope has introduced, but process and sensor noises disturb its estimations. Thus, applying the Kalman filter to the adaptive algorithm is able to reduce tracking failures by the noises. It …
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Orthogonalization techniques for adaptive filters
… and the computational complexity of an adaptive algorithm are two essential criteria by which the performance of an adaptive filter is measured. These objectives conflict with one another; each property is successfully achieved at the expense of the other. The principal means of …
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Adaptive Finite Element Methods for the Compressible Euler Equations
… on this finite element method, we develop an adaptive algorithm for the efficient computation of physically relevant quantities of the solution. This includes a posteriori error estimation of the error in the computed quantity as well as adaptive mesh design specifically tailored to the …
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Adaptive noise cancelling applied to machine condition monitoring
… objective of this thesis is to determine whether Adaptive Noise Cancelling can be used successfully in determining the state of machine elements. In addition, this thesis was used to gain experience in real-time computing. This was done by designing and building a real-time machine monitoring …
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Adaptive control for availability and consistency in distributed key-values stores
… a consistency SLA. In this paper, we propose an adaptive algorithm that automatically controls the underlying storage system in real-time to meet such an SLA while optimizing the other C/A metric. We also present an implementation of the algorithm based on the popular key-value store Riak. Our …
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The application of advanced signal processing techniques to the condition monitoring of electrical machine drive systems
… are wavelet analysis and a non-stationary adaptive signal processing algorithm. Four specific applications are identified for the research. These applications were specifically chosen to encapsulate important issues in condition monitoring of variable speed drive systems. The main aim of …
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The application of advanced signal processing techniques to the condition monitoring of electrical machine drive systems
… are wavelet analysis and a non-stationary adaptive signal processing algorithm. Four specific applications are identified for the research. These applications were specifically chosen to encapsulate important issues in condition monitoring of variable speed drive systems. The main aim of …
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Mdl-Based Band Selection and Adaptive Penalties for Hyperspectral Image Segmentation
… parameters that must be chosen. An adaptive algorithm that chooses the penalty parameters to maximize the pseudo-likelihood (PL) of the current image was developed by Lakshmanan and Derin, but it uses a costly simulated-annealing algorithm. We use a decoupling argument to find …
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