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 220 for “"Integral equation"”.
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Integral equation theories for complex fluids
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1994.
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An integral equation approach to vibrating plates
… frequency determination is suggested through an integral equation approach. The plate vibration problem is formulated as a problem in the solution of a homogeneous, linear Fredholm integral equation of the second kind in which the kernel is either symmetric or can be made so by a convenient …
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Recent Development in Low Frequency Integral Equation Method
Finally, the new fast-multipole scheme is used to model the seabed logging problem. The popular method to model the problem is the finite-difference time-domain (FDTD) method, which suffers from very large number of marching steps because the time step is small and the operating frequency is low. …
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Potential Theoretic Analysis of a Certain Integral Equation
Made available in DSpace on 2014-12-09T22:17:28Z (GMT). No. of bitstreams: 1 6607719.pdf: 2251541 bytes, checksum: e89db03d5b788ade93e07253100c93d0 (MD5) Previous issue date: 1966
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Envelope tracking integral equation based hybrid electromagnetic circuit simulators
… and simultaneously solving the electric field integral equation and Kirchhoff’s equations, respectively. The coupled nonlinear system of equations is iteratively solved by a time marching scheme that represents the fields, voltages, and currents of interest (signals) as a truncated series of …
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Integral-Equation Modelling of Metasurfaces via the Impedance Boundary Condition
L'abstract è presente nell'allegato / the abstract is in the attachment
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Efficient high-order integral equation methods for the heat equation
Efficient high-order integral equation methods have been developed for solving the boundary value problems of the heat equation with complex geometries in two and three dimensions. First of all, the classical heat potential theory is applied to convert such problems to Volterra integral equations …
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Augmented Surface Integral Equation Method for Low-Frequency Electromagnetic Analysis
Several fundamental aspects of the surface integral equation (SIE) method including the low-frequency breakdown, the skin effect, and the substrate effect, have been addressed for full-wave electromagnetic analysis in the low-frequency regime, especially the modeling of electrical interconnects on …
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A surface integral equation method for dielectrics at low frequencies
This thesis is dedicated to using surface integral equations to solve electro- magnetic problems involved in integrated circuits. Since normally the sizes of the devices in this application are much smaller than the wavelength of the electromagnetic waves, special considerations are needed because …
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Some Integral Equation Methods for Plane Problems of Classical Elastostatics
Made available in DSpace on 2014-12-10T17:25:31Z (GMT). No. of bitstreams: 1 6503662.pdf: 1274347 bytes, checksum: 33b590970f278636278eacb508bb8645 (MD5) Previous issue date: 1964
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Parallel Fft-Accelerated Time-Domain Integral Equation Solvers for Electromagnetic Analysis
… time-domain surface and volume electric field integral equations, respectively, and (ii) a circuit solver that models currents and voltages in lumped circuits, which are potentially active and nonlinear, by solving Kirchoff's equations through modified nodal analysis. The simulator also …
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A Boltzmann Integral Equation Treatment of Resonance Absorption in Reactor Lattices
Made available in DSpace on 2014-12-09T19:52:16Z (GMT). No. of bitstreams: 1 6507125.pdf: 3658065 bytes, checksum: 2ff55747ca2ee12aad0b1f76c27cea92 (MD5) Previous issue date: 1965
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Singular Nonlinear Integral Equation With Complex Valued Kernels of Type N
Made available in DSpace on 2014-12-05T21:50:17Z (GMT). No. of bitstreams: 1 6003895.pdf: 1058621 bytes, checksum: fee48b4a7e0820876d0cbf00206f9973 (MD5) Previous issue date: 1960
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Delta-gap port model for surface-volume-surface electric field integral equation
… Surface- Volume-Surface Electric Field Integral Equation (SVS-EFIE). The SVS-EFIE is a class of single-source integral equations (SSIEs), which is obtained from the combination of the volumetric equivalence principle with the conventional single-source eld representation. The classical …
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A boundary integral equation approach to three dimensional electromagnetic wave scattering problems
… and FDM;This dissertation presents a boundary integral equation (BIE) formulation for the problem of electromagnetic scattering due to homogeneous dielectric scatterers. The governing BIEs are then evaluated numerically using the BEM. Several fundamental electromagnetic scattering geometries …
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Time-Domain Integral-Equation Based Analysis of Complex Structures Loaded With Cables
… solvers are hybridized. (i) A time-domain integral-equation based field solver computes fields on the exterior structure comprising platforms, antennas, enclosures, boards, and cable shields (external fields). (ii) A modified nodal-analysis (MNA)-based circuit solver computes currents and …
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Boundary Integral Equation Solution of Plane Elasticity Problems With High Stress Concentrations
Made available in DSpace on 2014-12-13T19:31:56Z (GMT). No. of bitstreams: 1 8004240.pdf: 3579108 bytes, checksum: dd453a47fef151467431b22b1cec3ccd (MD5) Previous issue date: 1979
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Integral Equation-Based Inverse Scattering and Coil Optimization in Magnetic Resonance Imaging
… thesis, I detail how we applied highly accurate integral equation formulations to the tasks of 3D electrical properties estimation (inverse scattering) and parallel transmit (pTx) coil array optimization. I also present novel regularization strategies that are ideally suited for inverse problems. …
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Boundary integral equation based numerical solutions of helmholtz transmission problems for composite scatters
… an in-depth comparison between boundary integral equation solvers and Domain Decomposition Methods (DDM) for frequency domain Helmholtz transmission problems in composite two-dimensional media is presented. Composite media are characterized by piece-wise constant material properties …
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