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 36 for “"method of moment"”.
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Method of Moment Analysis of Partially Shielded Chiral Bodies of Revolution
<p>A chiral body of revolution (BOR) which is partially covered by a thin conducting shield is analyzed using the method of moments (MOM). The axisymmetric system is excited by a plane wave. The total internal fields and the far scattered fields are computed. The problem is solved using the surface …
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Technique for the design of matched antennas using method of moment-based greedy best-first search
"As the number of wireless devices continues to grow, technical requirements and design constraints are approaching the limits of antenna performance and feature integration. Complex multi-band antennas that must satisfy stringent volumetric constraints are pushing the use of optimization tools to …
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Solving time domain scattering and radiation problems in a marching-on-in-degree technique for method of moment
<p>The time domain method of moment has been proposed for a long time. The marching-on-in-time solver suffers from late time instability, while the marching-on-in-degree technique can avoid this problem. </p> <p>This thesis introduces a new temporal basis function and a new Green's function form …
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Performance of Bootstrap Confidence Region For Binomial Distribution With Unknown Parameters p and m
The goal of this research is to find out the Performance of the bootstrap confidence region of a binomial distribution with unknown parameters. The research is designed as follow: The first step is to estimate unknown parameters m and p from binomial distribution. In my case, I focus on method of …
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Statistical Properties of Weighted Generalized Gamma Distribution
<p>A new class of weighted generalized gamma distribution and related distributions are presented. Theoretical properties of the generalized gamma model, weighted generalized gamma distribution including the hazard function, reverse hazard function, moments, coefficient of variation, coefficient of …
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GPR propagation simulation and fat dipole antenna design
Two applications of FEKO are reported. The first application is investigating how antennas propagate. reflect, and the difference in transmit and receive signals in various ground media. Results of the ground penetration simulations done in FEKO (MoM- Method of Moment) is compared to Finite …
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Analysis of fink trussed bents by moment and thrust distribution
Before the method of moment and thrust distribution can be applied to trussed bents, certain constants must be determined. These constants can be obtained without too much difficulty as has been shown. Once these bent constants are known, the moment and thrust distribution may then be performed …
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Generative modeling of sequential data
… emphasis on sequential data. Namely, we develop methodologies to deal with issues regarding representation (modeling choices), learning paradigm (e.g. maximum likelihood, method of moments, adversarial training), and optimization. For the representation aspect, we make the following …
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Weighted Inverse Weibull and Beta-Inverse Weibull Distribution
… are considered. Theoretical properties of the inverse Weibull model, weighted inverse Weibull distribution including the hazard function, reverse hazard function, moments, moment generating function, coefficient of variation, coefficient of skewness, coefficient of kurtosis, Fisher …
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Finite difference techniques for body of revolution radar cross section
Although a number of radar cross section prediction techniques have been developed which exploit body of revolution symmetry, the use of finite-difference techniques with these geometries has not been throughly explored. This thesis investigates several finite-difference approaches which vary both …
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Retrieval of equivalent currents by the use of an integral representation and the extinction theorem --- radome applications
The aim of this thesis is to solve an inverse source problem. The approach is based on an integral representation together with the extinction theorem. Both a scalar and a full-wave integral representation are implemented and solved by a Method of Moment procedure. The body of revolution enables …
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Modeling with bivariate geometric distributions
… components which were subject to different types of failures. Systems with two components having frequency counts in the domain of positive integers, and the survival time of each component following geometric or mixture geometric distribution can be classified into this category. Examples of such …
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Liquid side flow characteristics in a packed absorption column
This thesis is primarily concerned with the study of techniques which enable flow conditions in complex geometrical arrangements to be measured and analysed. The liquid side in a packed absorption tower is chosen to illustrate the principles involved. The analysis of disturbance testing involves …
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The radiation physics, mitigation approaches and design guidelines of high-speed connectors and cables analyzed with numerical modeling, analytical formulation and measurements
<p>The dissertation is composed of three papers, which cover the radiation and mitigation of high-speed connectors and cables analyzed with full wave simulation, numerical modeling, analytical formulation and measurements.</p><p>In the first paper, the radiation from the optical cage connector in …
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The impact of corporate governance compliance and capital structure on firm performance: Evidence from Pakistan
… for academics and practitioners in terms of its determinants and its impact on several firm level attributes. However, the importance of the issue has yet to be advocated in emerging markets where capital markets are still evolving, and the rights of shareholders are less protected. …
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Analysis of trussed bents by moment distribution
The analysis of trussed bents can be very satisfactorily executed by using the Cross method of moment distribution in conjunction with a method of distributing thrust. The use of such a method as this may be realized when we think of the contrasting time element involved in the solution of the …
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DYADIC GREEN'S FUNCTIONS FOR LAYERED GENERAL ANISOTROPIC MEDIA AND THEIR APPLICATION TO RADIATION OF DIPOLE ANTENNAS
… the obtained DGFs, the radiation problems of a Hertzian dipole and a microstrip antenna in the presence of an anisotropic substrate are solved.</p> <p>After a brief introduction, the eigenvector dyadic Green‟s functions (E-DGFs) for an unbounded general anisotropic medium through the …
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The determinants and impact of inward oil and gas FDI in Nigeria
… investigating the determinants and impact of inward oil and gas FDI on Nigeria’s economic growth and export performance. The study dataset covers a period of 17 years from 2001 to 2017. The country-level dataset was analysed in three separate models, which include, the country as a whole, …
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Pricing-to-market for UK export sector
… the pricing-to-market (PTM) behaviour of the UK export sector. Unlike previous studies, this study econometrically tests for seasonal unit roots in the export prices prior to estimating PTM behaviour. Prior studies have seasonally adjusted the data automatically. This study’s results …
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Deterministic Design of Metasurface Antennas
L'abstract è presente nell'allegato / the abstract is in the attachment
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