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Dissertations / Theses on the topic 'Electromagnetism electromagnetic'

Author: Grafiati

Published: 20 August 2021

Last updated: 29 July 2025

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1

Bau-Hsing, Ann. "Computer-aided electromagnetic analysis of chokes and transformers." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1438255468.

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2

Fouda, Ahmed Elsayed. "Electromagnetic Time-Reversal Imaging and Tracking Techniques for Inverse Scattering and Wireless Communications." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366202740.

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3

Moon, Haksu. "Robust Algorithms for Electromagnetic Field Computation with Conduction Currents and Kinetic Charge-Transport Models." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1440193844.

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4

Lei, Feiran. "Homogenization of Heterogeneous Composites by Using Effective Electromagnetic Properties." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1299513068.

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5

Lalley, Nicholas M. "Composite Electromagnetic Applications and Devices." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1504878841254054.

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6

Sainath, Kamalesh K. "Robust Numerical Electromagnetic Eigenfunction Expansion Algorithms." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1480340627500682.

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7

Young, André. "Mesh termination schemes for the finite element method in electromagnetics /." Link to the online version, 2007. http://hdl.handle.net/10019/735.

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8

Nouri, Farnoosh Massoudian. "Electromagnetic aftereffects of near-death experiences." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc9054/.

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The purpose of this quantitative study was first to investigate the comparative incidence of electromagnetic aftereffects (EMEs) during the past year among near-death experiencers (NDErs), people who experienced a close brush with death without an NDE (CBrs), and people who reported never having experienced a close brush with death (LCErs). The second purpose was to investigate a possible change in EME incidence among the three groups before and after a critical life event. The third purpose was to investigate the relationship between the reported overall depth and specific components of the s

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9

Park, Young C. (Young Chul) 1960. "A Study of Some Biological Effects of Non-Ionizing Electromagnetic Radiation." Thesis, University of North Texas, 1996. https://digital.library.unt.edu/ark:/67531/metadc278105/.

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The experimental studies of this work were done using a microwave cavity spectrometer, Escherichia coli (E-coli) bacteria, and other peripheral equipment. The experiment consists of two steps. First, a general survey of frequencies from 8 GHz to 12 GHz was made. Second, a detailed experiment for specific frequencies selected from the first survey were further studied. Interesting frequency dependent results, such as unusually higher growing or killing rates of E-coli at some frequencies, were found. It is also concluded that some results are genetic, that is, the 2nd, and 3rd subcultures showe

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10

Xie, Zhongqiang. "Fourth-order finite difference methods for the time-domain Maxwell equations with applications to scattering by rough surfaces and interfaces." Thesis, Coventry University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369842.

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11

Sundberg, Garth. "Numerical Modeling of Electromagnetic Scattering in Explosive Granular Media." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/865.

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Terahertz (THz) reflection and transmission spectroscopy is a promising new field with applications in imaging and illicit material detection. One particularly useful application is for the detection of improvised explosive devices (IEDs) which is a favorite weapon of global terrorists. Explosive materials have been shown to have a unique spectral signature in the THz band which can be used to identify the explosives. However, the initial measurements performed on the explosive samples do not account for the modulation of the spectral features by random scattering that will be prevalent with a

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12

Lin, Chien-Min. "Efficiently computational techniques for solving large-scale electromagnetic problems microstrip interconnects and rough surface scattering /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/5878.

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13

Kimn, Edward Sun. "A parametric finite element analysis study of a lab-scale electromagnetic launcher." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39498.

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The purpose of the study is to better understand the factors that affect melt-wear in the armature-to-rail contact interface of an electromagnetic launcher (EML). In order to investigate the factors, the study uses finite element analysis (FEA) to vary parameters of a lab-scale EML at the Georgia Institute of Technology. FEA is used due to the complex nature of the system, which includes the geometry and various engineering aspects that the EML incorporates. The study focuses on an uncoupled analysis of the structural, electromagnetic (EMAG), thermal, and modal aspects. The reason for the unco

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14

Berry, Yoke. "The effect of pulsed electromagnetic fields on protein unfolding." Access electronically, 2005. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060713.142625/index.html.

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15

Hong, Jia-Sheng. "Electromagnetic forces in flexible systems." Thesis, University of Oxford, 1994. http://ora.ox.ac.uk/objects/uuid:ab6b986e-7b24-4fee-9410-aa4e92249b03.

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Some problems in electro dynamics have been studied in the light of electromagnetic field theory and computational techniques. One is that of the retrograde motion of the electric arc – an old and intriguing problem of physics. A more complete model based on electrodynamics has been proposed for study of this problem. In this model, the plasma column is treated as a flexible conductor. The associated 3-dimensional boundary-value problem was solved by the boundary element method (BEM). It has been shown that the retrograde motion can indeed be understood in terms of electrodynamics and a number

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16

Fernández, Varea José María. "Interactions of electrons with matter." Doctoral thesis, Universitat de Barcelona, 1992. http://hdl.handle.net/10803/667581.

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The interaction of electrons with matter has been a subject of intense work since the beginning of the century. Although we know that the interaction is purely electromagnetic, its theoretical description is complicated by two different reasons. On the one hand, the number of particles that participate in the interaction may be very large. Even when the target is a single hydrogen atom, the collision is a three body problem for which only approximate solutions of the wave equation are known. Therefore, the interaction can only be treated by using approximat

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17

Freitas, Renata Valerio de. "Análise temporal da antena espiral equiangular filamentar." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-17032017-091433/.

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Por conta da liberação de uma nova faixa de espectro as aplicações que utilizam transmissão em banda ultralarga se expandiram. Por conta disso, várias formas de transmissão pulsada ganharam destaque. Contudo, o projeto e estudo de antenas até então era majoritariamente feito em banda estreita e regime permanente senoidal. Além disso, para transmissão pulsada, a resposta impulsiva da antena passa a ser mais necessária do que sua resposta em banda estreita. Por isso, o objetivo desse estudo foi explorar o que ocorre com pulsos estreitos se propagando em uma antena de forma a se obter uma aproxim

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18

O’Donnell, Andrew Nickerson. "On the Electromagnetic Scattering from Small Grooves in a Conical Surface." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1297889460.

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19

Nouri, Farnoosh Massoudian Holden Janice Miner. "Electromagnetic aftereffects of near-death experiences." [Denton, Tex.] : University of North Texas, 2008. http://digital.library.unt.edu/permalink/meta-dc-9054.

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20

Meyendorf, Robert. "Nondestructive Determination of Case Depth in Surface Hardened Steels by Combination of Electromagnetic Test Methods." University of Dayton / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1303834395.

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21

Wang, Yong. "Frequency domain coupled circuit-electromagnetic simulation /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/6071.

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22

Burke, Mary Joset. "Visualization of electromagnetic fields using MATLAB." Honors in the Major Thesis, University of Central Florida, 1998. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/25.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.<br>Bachelors<br>Engineering<br>Electrical Engineering

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23

Seetharaman, Sathya Sai. "Electromagnetic interactions in one-dimensional metamaterials." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/33746.

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Metamaterials offer the freedom to tune the rich electromagnetic coupling between the constituent meta-atoms to tailor their collective electromagnetic response. Therefore, a comprehensive understanding of the nature of electromagnetic interactions between meta-atoms is necessary for novel metamaterial design, which is provided in the first part of this thesis. The subsequent work in the thesis applies the understanding from the first part to design and demonstrate novel one-dimensional metamaterials that overcome the limitations of metamaterials proposed in literature or exhibit electromagnet

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24

Lee, Hwa Ok. "Numerical Modeling of Electromagnetic Well-Logging Sensors." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1274981676.

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25

Millet, Floyd W. "Improving Electromagnetic Bias Estimates." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd525.pdf.

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26

Chen, Quan, and 陈全. "Efficient high-frequency electromagnetic simulation in VLSI: rough surface effects and electromagnetic-semiconductor coupled simulation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B44904940.

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27

Lewis, Erin. "Radiant Textiles : A framework for designing with electromagnetic phenomena." Licentiate thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-26256.

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The design of smart, interactive, computational, and electronic textiles involves working with unknown variables that expand the tangible dimensions of textiles. Non-visual concepts such as electromagnetic fields, electrical current, computational code, and the temporal attributes of materials that exhibit dynamic qualities require that textile designers be able to perceive and manipulate domains of the textile that extend beyond its conventional forms of expression. Through these qualities, the textile becomes an interface to otherwise imperceptible phenomena of electromagnetism and thereby o

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28

Pan, Guangdong. "Electromagnetic Backscattering Studies of Nonlinear Ocean Surfaces." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1204559229.

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29

Lu, Chuan. "Generalized finite element method for electromagnetic analysis." Diss., Connect to online resource - MSU authorized users, 2008.

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Thesis (Ph. D.)--Michigan State University. Electrical and Computer Engineering, 2008.<br>Title from PDF t.p. (viewed on Apr. 8, 2009) Includes bibliographical references (p. 148-153). Also issued in print.

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30

Norvill, Margarita L. "The use of distributed sensor arrays in electrical and electromagnetic imaging." Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/777.

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Electrical methods for exploring the earth, such as direct current resistivity, induced polarization and electromagnetism are used for numerous exploration, engineering and environmental applications. Common to all these applications is the desire to obtain the clearest possible image of the target. This thesis analyses and develops methods for improving signal to noise ratio for electrical methodsThe ability to recover subsurface information from electrical exploration methods is dependent on the limits of signal detection which is strongly influenced by instrumentation and the conductivity s

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31

Sequin, Emily Katherine. "Imaging of Cancer in Tissues Using an Electromagnetic Probe." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250530826.

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32

Myers, Joshua Allen. "Nano-scale RF/Microwave Characterization of Materials' Electromagnetic Properties." Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1340883872.

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33

Kamal, Manish. "A uniform pressure electromagnetic actuator for forming flat sheets." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1127230699.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xxi, 261 p.; also includes graphics (some col.). Includes bibliographical references (p. 244-254). Available online via OhioLINK's ETD Center

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34

Hendricks, Jessica Marie. "ELECTROMAGNETIC CHARACTERIZATION OF AF455 WITH DNA-CTMA IN SOLVENT BLENDS." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1389718452.

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35

Bommaraju, Ramaprasad V. "Mold behavior, heat transfer and quality of billets cast with in-mold electromagnetic stirring." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28628.

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Mold behavior, mold-related quality and the columnar-to-equiaxed transition influenced by in-mold EMS were examined by performing trials at two steel companies, metallurgical examination of the billet samples and mathematical modelling. The thermal fields in the walls of billet molds (102 X 102mm and 127 X 178mm) and in the cooling water were monitored by a system of thermocouples as the EMS was switched on and off during the continuous casting of several heats. The effect of electro-magnetic stirring on mold heat extraction was found to be negligible. The mold temperatures and cooling water t

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36

Marchand, Renier Gustav. "Fine element tearing and interconnecting for the electromagnetic vector wave equation in two dimensions /." Link to online version, 2007. http://hdl.handle.net/10019/363.

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37

Cheng, K. T. "Numerical simulation of stimulated electromagnetic emissions in the ionosphere." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09052009-040723/.

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38

Wei, Mu-Hsin. "Electromagnetic induction spectroscopy for the detection of subsurface targets." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45896.

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This thesis presents a robust method for estimating the relaxations of a metallic object from its electromagnetic induction (EMI) response. The EMI response of a metallic object can be accurately modeled by a sum of real decaying exponentials. However, it is difficult to obtain the model parameters from measurements when the number of exponentials in the sum is unknown or the terms are strongly correlated. Traditionally, the relaxation constants are estimated by nonlinear iterative search that often leads to unsatisfactory results. An effective EMI modeling technique is developed by first lin

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39

Clarke, Samuel R. (Samuel Robert). "Development of a FEM waveguide code, incorporating Fast Frequency Techniques, for numerical synthesis." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52762.

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Thesis (MScEng)--University of Stellenbosch, 2002.<br>ENGLISH ABSTRACT: A computational tool for numerical synthesis via optimization is developed. Only two port waveguide devices are considered. The Finite Element Method (FEM) is used for the electromagnetic analysis. Specifically, the frequency domain electric field FEM is used with vector curl-conforming constant tangential/linear normal brick-shaped elements. Special boundary conditions are used at the ports. These boundary conditions only consider dominant mode propagation. The issues surrounding the implementation of this formulat

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40

Cardia, Daniel Vitor Faria. "Determinação de modelos simplificados de fontes equivalentes de campos elétricos e magnéticos aplicáveis à análise de compatibilidade eletromagnética de sistemas embarcados." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-12032018-083256/.

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Neste trabalho apresentar-se-á um método para a determinação de modelos simplificados de fontes equivalentes de campos elétricos e magnéticos aplicáveis à análise de compatibilidade eletromagnética de sistemas embarcados. Esses modelos são obtidos a partir de medições laboratoriais, com técnicas de cálculos analíticos, numéricos e híbridos. Destacam-se, o fato da utilização do método de medição através de antenas de grandes loops (ou, laços, em português), na determinação de fontes equivalentes de emissão radiada e a aplicação destas na avaliação dos campos eletromagnéticos radiados. A contrib

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41

van, Herel Ryan Marinus Johannes Wilhelmus Maria. "Wire Explosion via Electromagnetic Induction." Thesis, University of Canterbury. Electrical and Computer Engineering, 2011. http://hdl.handle.net/10092/6719.

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This research is aimed at exploding a wire via electromagnetic induction, with a preference for obtaining restrike of the exploding wire in a ring shape or otherwise. Literature on both exploding wire and electromagnetic induction are introduced together. A mathematical framework to describe the wire explosion by induction is formulated from first principles using the idea of magnetic flux linkages. The environment in which the experiments took place is described, with reference to matters of laboratory safety and also measurement of transient electrical current and voltage in the wire explosi

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42

Čajko, František. "Nano-focusing of light electromagnetic analysis and simulation /." Akron, OH : University of Akron, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1249331504.

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Dissertation (Ph. D.)--University of Akron, Dept. of Electrical and Computer Engineering, 2009.<br>"August, 2009." Title from electronic dissertation title page (viewed 9/23/2009) Advisor, Igor Tsukerman; Committee members, Nathan Ida, Iqbal Husain, Ernian Pan; Department Chair, Alex De Abreu Garcia, Dmitry Golovaty; Dean of the College, George K. Haritos; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.

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43

Chen, Ming. "Characterization of Pedestrian Electromagnetic Scattering at 76-77GHz." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1385579499.

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44

Alnajjar, Hisham. "Methods of reducing the possible health hazards of 60-Hz magnetic fields." Ohio : Ohio University, 1988. http://www.ohiolink.edu/etd/view.cgi?ohiou1182539996.

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45

Saeed, Usman. "Adaptive numerical techniques for the solution of electromagnetic integral equations." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41173.

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Various error estimation and adaptive refinement techniques for the solution of electromagnetic integral equations were developed. Residual based error estimators and h-refinement implementations were done for the Method of Moments (MoM) solution of electromagnetic integral equations for a number of different problems. Due to high computational cost associated with the MoM, a cheaper solution technique known as the Locally-Corrected Nyström (LCN) method was explored. Several explicit and implicit techniques for error estimation in the LCN solution of electromagnetic integral equations were pro

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46

Shakya, Nawayandra. "Electromagnetic Modeling of Induction Tool Responses in Isotropic and Anisotropic Layered Earth Formations." Youngstown State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1442437192.

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47

Young, Andre. "Mesh termination schemes for the finite element method in electromagnetics." Thesis, Stellenbosch : Stellenbosch University, 2007. http://hdl.handle.net/10019.1/2831.

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Thesis (MScEng (Electrical and Electronic Engineering))--Stellenbosch University, 2007.<br>The finite element method is a very efficient numerical tool to solve geometrically complex problems in electromagnetics. Traditionally the method is applied to bounded domain problems, but it can also be forged to solve unbounded domain problems using one of various mesh termination schemes. A scalar finite element solution to a typical unbounded two-dimensional problem is presented and the need for a proper mesh termination scheme is motivated. Different such schemes, specifically absorbing bound

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48

Schwartz, Robert Lee. "Vestibular and Electromagnetic Stimulation: Their Effects on Intellectual Performance and Mood State." Thesis, University of North Texas, 1991. https://digital.library.unt.edu/ark:/67531/metadc332751/.

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In the present study, the Electromechanical Therapeutic Apparatus was examined to determine the extent to which its repeated use can influence intellectual performance and mood state. The Electromechanical Therapeutic Apparatus is a device designed to mildly stimulate the body and brain, while facilitating relaxation. Its three components include a rotating platform-bed; a weak, extremely-low-frequency, external-electric field; and music. In the present study, three groups were contrasted, a music-only group which served as a placebo; a group which combined motion-vestibular stimulation and mu

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49

Bekele, Ephrem Teshale. "Innovative Electromagnetic Field Manipulating Devices Based on Transformation Electromagnetics." Doctoral thesis, Università degli studi di Trento, 2015. https://hdl.handle.net/11572/368574.

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Quasiconformal Transformation Optics (QCTO) has been investigated and applied for the design of innovative electromagnetic field manipulating devises. The design is focused on enhancing radiation performance of antenna arrays. Towards this end, the QCTO approach has been utilized for the application of compressing dimension of linear array at the same time keeping its radiation performance equivalent to the original array. The basic QCTO is then generalized to allow an arbitrary physical arrangement coated with a suitable lens to exhibit the same radiating features of an arbitrary reference vi

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50

Bekele, Ephrem Teshale. "Innovative Electromagnetic Field Manipulating Devices Based on Transformation Electromagnetics." Doctoral thesis, University of Trento, 2015. http://eprints-phd.biblio.unitn.it/1499/1/Ph.D.Thesis.BEKELE-April.2015.Final.pdf.

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Quasiconformal Transformation Optics (QCTO) has been investigated and applied for the design of innovative electromagnetic field manipulating devises. The design is focused on enhancing radiation performance of antenna arrays. Towards this end, the QCTO approach has been utilized for the application of compressing dimension of linear array at the same time keeping its radiation performance equivalent to the original array. The basic QCTO is then generalized to allow an arbitrary physical arrangement coated with a suitable lens to exhibit the same radiating features of an arbitrary reference vi

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