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 231 for “"Method of moments"”.
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A Method of Moments Solution of Stripline Discontinuity Problems
… different but related topics are the concern of this thesis. The first is the development of a technique for accelerating the summation of an infinite series which has the form of a periodic Green's function in rectangular coordinates. The application of this series acceleration technique to …
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Specification testing and estimation using a generalized method of moments
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Economics, 1983.
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General method of moments bias and specification tests for quantile regression
… and independent across observations and of one another, and utilize the GMM bias calculation of Newey & Smith (2001). This leads to a closed form expression for the GMM bias applied to AR(1) model. Chapter 2: This chapter develops specification tests for quantile regression under various …
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Method of Moments Analysis of an Aperture in a Thick Ground Plane
<p>The problem of electromagnetic scattering from and transmission through an arbitrarily shaped aperture is considered. The aperture is in a thick infinite perfectly conducting ground plane. The conducting walls of the cavity inside the ground plane are of arbitrary shape. The apertures at both …
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Stability and Convergence of the Method of Moments Applied to Electromagnetic Problems
… in DSpace on 2014-12-12T20:54:08Z (GMT). No. of bitstreams: 1 7524344.pdf: 6575312 bytes, checksum: 6276ba5a249fde6ebd4c9db08c669ecc (MD5) Previous issue date: 1975
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Using the method of moments and Robin Hood method to solve electromagnetic scattering problems
… by using a surface integral formulation of Maxwell's equations, which discretizes the surface of the scatterer into thousands of triangles. The method of moments (MoM) was applied, which calculates the Green's functions between each triangle element. A matrix equation is obtained and …
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A penalized linear mixed model with generalized method of moments estimators for complex phenotype prediction
Linear mixed models have long been the method of choice for risk prediction analysis on high-dimensional data, where random effect terms are used to capture predictive effects from multiple markers. However, it remains computationally challenging to simultaneously model a large number of variables …
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Computational Aspects of An Asymptotic Analysis of Method of Moments Estimators of Parameters For the Binomial Distribution
In this thesis, I evaluate the confidence region of the known parameters p and m of the Binomial distribution and analyze them using descriptive statistics. This research first introduces the method of moments estimators of these parameters, p ̂_n and m ̂_n. Because p ̂_n and m ̂_n do not have mean …
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Analysis of infinite arrays of arbitrarily shaped planar radiating elements using a Floquet mode based Method of Moments approach
… phased array antennas are theoretically capable of delivering the directive gain of similarly sized aperture antennas while offering electronic beam scanning capabilities and greater operational flexibility. Unfortunately, the high cost associated with large phased antenna arrays has limited …
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Modelling and analysis of complex electromagnetic problems using FDTD subgridding in hybrid computational methods. Development of hybridised Method of Moments, Finite-Difference Time-Domain method and subgridded Finite-Difference Time-Domain method for precise computation of electromagnetic interaction with arbitrarily complex geometries
The main objective of this research is to model and analyse complex electromagnetic problems by means of a new hybridised computational technique combining the frequency domain Method of Moments (MoM), Finite-Difference Time-Domain (FDTD) method and a subgridded Finite-Difference Time-Domain …
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On improving the low-frequency performance of full-wave modeling techniques
"The method of moments and the finite element method are very powerful methods for solving electromagnetic problems in the frequency domain. However, the direct application of these techniques at low frequencies results in instability and significant errors. This is due to the divergence operation …
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Half lives of the levels 829 and 864 keV in ¹¹⁵In measured by delayed coincidence technique and analysed by three different methods
An initial study of the delayed coincidence technique and methods of analysis has been made. Three methods of analysis are attempted: the slope, the method of moments and the "unfolding" method. Necessary corrections to minimize errors of calculation are proposed and numerical checks of the methods …
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Uncertainty analysis in software reliability of component-based systems
Several architecture-based software reliability models were proposed in the past. These models compute the point estimate of system reliability by plugging point estimates of unknown parameters into the model. These models however, discard the uncertainty of the parameters, that is, they do not …
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Scattering from periodic array of parallel strips
… distribution between strips in a periodic array of parallel strips was modeled. The electric field integral equation (EFIE) together with method of moments was employed to solve the problem. The incident plane wave was assumed to be transverse magnetic (TM) and transverse electric (TE). The …
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Classification and Parameter Estimation of Asynchronously Received PSK/QAM Modulated Signals in Flat-Fading Channels
One of the fundamental hurdles in realizing new spectrum sharing allocation policies is that of reliable spectrum sensing. In this thesis, three research thrusts are presented in order to further research in this critical area. The first of these research thrusts is the development of a novel …
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Point Estimation of Three Parameter Crack Distribution
… three parameter Crack distribution is a mixture of the two parameter Inverse Gaussian distribution and Length Biased Inverse Gaussian distribution and Birnbaum-Saunders distribution is a special case for p = 1 2 ; where 0 p 1, is the weight parameter. In this thesis, we have developed and …
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High-frequency electromagnetic wave scattering from rough surfaces
… surface scattering problem is presented. The method employed, entitled the ""shooting and bouncing rays"" (SBR) method, is based on a combination of the geometric optics (GO) theory and the physical optics (PO) theory. The SBR method improves on the Kirchhoff approximation by considering the …
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The effect of corporate governance characteristics on performance and capital structure: an empirical study of Saudi listed companies
… structure and performance and the determinants of capital structure with respect to corporate governance. Saudi Arabia is a special case in which companies do not pay income tax and the bond market is illiquid and in its early stages. Ownership is concentrated and based on wealthy families and …
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Efficient integral equation solution of electromagnetic scattering by arbitrarily shaped objects in planar, multilayered media
The solution of electromagnetic scattering by objects located in planar, multilayered media has long been the subject of active research. For layered-media integral equation solutions via the Method of Moments (MoM), the O($N\sp2$) matrix fill is often prohibitively expensive, even for problems of …
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