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.
Results
Showing 1 to 11 of 11 for “"Distributed Parameters"”.
-
Effect of a hydraulic conduit with distributed parameters on control-valve stability
Thesis (Sc.D.) Massachusetts Institute of Technology. Dept. of Mechanical Engineering, 1955.
-
Adaptive Finite Element Methods for the Identification of Distributed Parameters in Partial Differential Equations
… In particular, we consider problems where distributed coefficients in partial differential equations are to be identified from measurements of the state variable. The ingredients for efficient algorithms are error estimates for various quantities, such as the misfit or the error in the …
-
Modeling, Approximation, and Control for a Class of Nonlinear Systems
… using integral operators that depend on distributed parameters. Consequently, the resulting estimation and control equations define a distributed parameter system whose state, and distributed parameters evolve in finite and infinite dimensional spaces, respectively. The well-posedness of …
-
Power line communications systems
… modeled as a two wire lumped-element model with distributed parameters. These parameters are capacitance, inductance, conductance and resistance.The predicted results, generated by MATLAB software closely matched those obtained by the measurements carried out on the 10m flat cable. The model and …
-
Estimation of channelized features in geological media using sparsity constraint
… of ill-posed problems with spatially continuous parameters that exhibit sparseness in an incoherent basis (e.g. a Fourier basis). The solution is constrained to be sparse in the transform domain and the dimension of the search space is effectively reduced to a low frequency subspace to improve …
-
Fréchet Sensitivity Analysis and Parameter Estimation in Groundwater Flow Models
… information as to which perturbations in the distributed parameters lead to the most significant changes in the solutions, as well as applications to uncertainty quantification. Numerical results complement our theoretical findings.
-
Minimally Corrective, Approximately Recovering Priors to Correct Expert Judgement in Bayesian Parameter Estimation
… introduce bias into the understanding of the parameters. This can be especially relevant in the case of distributed parameters where it is difficult to check for error. To minimize this bias, we develop the idea of a minimally corrective, approximately recovering prior (MCAR prior) that …
-
Parameter identification in distributed structures
… two new techniques for the identification of parameters in distributed-parameter systems. The first technique identifies the physical parameter distributions such as mass, damping and stiffness. The second technique identifies the modal quantities of self-adjoint distributed-parameter systems. …
-
Goal-oriented inference : theoretical foundations and application to carbon capture and storage
… quantities of interest that depend on unknown distributed parameters of the governing partial differential equations. Examples include prediction of concentration levels in critical areas for contamination events in urban areas and prediction of trapped volume of supercritical carbon dioxide in …
-
Transport maps for accelerated Bayesian computation
… the joint distribution of coarse and ne-scale parameters. We evaluate the accuracy of our approach via comparison to single-scale MCMC on a 100-dimensional problem, then demonstrate the algorithm on an inverse problem from ow in porous media that has over 105 spatially distributed parameters. …
-
Modeling, Simulation, and Analysis of Micromechanical Filters Coupled with Capacitive Transducers
… this Dissertation, we treat filters as distributed-parameter systems. In the first part of the Dissertation, we demonstrate the methodology by considering a mechanical filter composed of two beams coupled by a weak beam. We solve a boundary-value problem (BVP) composed of five equations …