subject:(Finite Difference Time Domain Method)

University of Utah

1. Smith, Steven Michael. Stochastic finite-difference time-domain.

Degree: PhD, Electrical & Computer Engineering, 2011, University of Utah

URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/485/rec/2257

► This dissertation presents the derivation of an approximate method to determine the mean and the variance of electromagnetic fields in the body using the Finite-Difference… (more)

Subjects/Keywords: Delta method; EM simulation; FDTD; Finite-difference time-domain; Stochastic

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Smith, S. M. (2011). Stochastic finite-difference time-domain. (Doctoral Dissertation). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/485/rec/2257

Chicago Manual of Style (16^th Edition):

Smith, Steven Michael. “Stochastic finite-difference time-domain.” 2011. Doctoral Dissertation, University of Utah. Accessed August 25, 2019. http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/485/rec/2257.

MLA Handbook (7^th Edition):

Smith, Steven Michael. “Stochastic finite-difference time-domain.” 2011. Web. 25 Aug 2019.

Vancouver:

Smith SM. Stochastic finite-difference time-domain. [Internet] [Doctoral dissertation]. University of Utah; 2011. [cited 2019 Aug 25]. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/485/rec/2257.

Council of Science Editors:

Smith SM. Stochastic finite-difference time-domain. [Doctoral Dissertation]. University of Utah; 2011. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/485/rec/2257

2. Tran, Huu Thang. Modeling of corona discharge and Its application to a lightning surge analysis in a power system : コロナ放電のモデリングと電力システムの雷サージ解析への応用; コロナホウデンノモデリングトデンリョクシステムノライサージカイセキエノオウヨウ; コロナホウデンノモデリングトデンリョクシステムノカミナリサージカイセキエノオウヨウ.

Degree: 博士(工学), 2014, Doshisha University / 同志社大学

URL: https://doors.doshisha.ac.jp/duar/repository/ir/17527/?lang=0 ; http://dx.doi.org/10.14988/di.2017.0000016170

► This thesis has proposed a simplified model of corona discharge from an overhead wire struck by lightning for surge computations using the FDTD method. In… (more)

Subjects/Keywords: Corona; Finite-difference time-domain (FDTD) method; Lightning surge; Power System

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tran, H. T. (2014). Modeling of corona discharge and Its application to a lightning surge analysis in a power system : コロナ放電のモデリングと電力システムの雷サージ解析への応用; コロナホウデンノモデリングトデンリョクシステムノライサージカイセキエノオウヨウ; コロナホウデンノモデリングトデンリョクシステムノカミナリサージカイセキエノオウヨウ. (Thesis). Doshisha University / 同志社大学. Retrieved from https://doors.doshisha.ac.jp/duar/repository/ir/17527/?lang=0 ; http://dx.doi.org/10.14988/di.2017.0000016170

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tran, Huu Thang. “Modeling of corona discharge and Its application to a lightning surge analysis in a power system : コロナ放電のモデリングと電力システムの雷サージ解析への応用; コロナホウデンノモデリングトデンリョクシステムノライサージカイセキエノオウヨウ; コロナホウデンノモデリングトデンリョクシステムノカミナリサージカイセキエノオウヨウ.” 2014. Thesis, Doshisha University / 同志社大学. Accessed August 25, 2019. https://doors.doshisha.ac.jp/duar/repository/ir/17527/?lang=0 ; http://dx.doi.org/10.14988/di.2017.0000016170.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tran, Huu Thang. “Modeling of corona discharge and Its application to a lightning surge analysis in a power system : コロナ放電のモデリングと電力システムの雷サージ解析への応用; コロナホウデンノモデリングトデンリョクシステムノライサージカイセキエノオウヨウ; コロナホウデンノモデリングトデンリョクシステムノカミナリサージカイセキエノオウヨウ.” 2014. Web. 25 Aug 2019.

Vancouver:

Tran HT. Modeling of corona discharge and Its application to a lightning surge analysis in a power system : コロナ放電のモデリングと電力システムの雷サージ解析への応用; コロナホウデンノモデリングトデンリョクシステムノライサージカイセキエノオウヨウ; コロナホウデンノモデリングトデンリョクシステムノカミナリサージカイセキエノオウヨウ. [Internet] [Thesis]. Doshisha University / 同志社大学; 2014. [cited 2019 Aug 25]. Available from: https://doors.doshisha.ac.jp/duar/repository/ir/17527/?lang=0 ; http://dx.doi.org/10.14988/di.2017.0000016170.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tran HT. Modeling of corona discharge and Its application to a lightning surge analysis in a power system : コロナ放電のモデリングと電力システムの雷サージ解析への応用; コロナホウデンノモデリングトデンリョクシステムノライサージカイセキエノオウヨウ; コロナホウデンノモデリングトデンリョクシステムノカミナリサージカイセキエノオウヨウ. [Thesis]. Doshisha University / 同志社大学; 2014. Available from: https://doors.doshisha.ac.jp/duar/repository/ir/17527/?lang=0 ; http://dx.doi.org/10.14988/di.2017.0000016170

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

McMaster University

3. Zhang, Yu. Advances in the adjoint variable method for time-domain electromagnetic simulations.

Degree: DEng, 2015, McMaster University

URL: http://hdl.handle.net/11375/17471

►

This thesis covers recent advances in the adjoint variable method for the sensitivity estimations through time-domain electromagnetic simulations. It considers both frequency-independent and frequency-dependent response… (more)

Subjects/Keywords: Adjoint variable method (AVM); computational electromagnetics; finite-difference time-domain (FDTD)

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zhang, Y. (2015). Advances in the adjoint variable method for time-domain electromagnetic simulations. (Doctoral Dissertation). McMaster University. Retrieved from http://hdl.handle.net/11375/17471

Chicago Manual of Style (16^th Edition):

Zhang, Yu. “Advances in the adjoint variable method for time-domain electromagnetic simulations.” 2015. Doctoral Dissertation, McMaster University. Accessed August 25, 2019. http://hdl.handle.net/11375/17471.

MLA Handbook (7^th Edition):

Zhang, Yu. “Advances in the adjoint variable method for time-domain electromagnetic simulations.” 2015. Web. 25 Aug 2019.

Vancouver:

Zhang Y. Advances in the adjoint variable method for time-domain electromagnetic simulations. [Internet] [Doctoral dissertation]. McMaster University; 2015. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/11375/17471.

Council of Science Editors:

Zhang Y. Advances in the adjoint variable method for time-domain electromagnetic simulations. [Doctoral Dissertation]. McMaster University; 2015. Available from: http://hdl.handle.net/11375/17471

University of Oklahoma

4. Perera, Sudantha. Physical Knowledge Based Scalable Phased Array Antenna Modeling for Radar Systems.

Degree: PhD, 2016, University of Oklahoma

URL: http://hdl.handle.net/11244/47142

► The development of a large-scale phased array radar system such as the future MPAR will need a cost-effective tool for predicting electromagnetic characteristics of antennas.… (more)

Subjects/Keywords: Phased Array Antennas; Computational Electromagnetics; Finite Difference Time Domain Method

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Perera, S. (2016). Physical Knowledge Based Scalable Phased Array Antenna Modeling for Radar Systems. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/47142

Chicago Manual of Style (16^th Edition):

Perera, Sudantha. “Physical Knowledge Based Scalable Phased Array Antenna Modeling for Radar Systems.” 2016. Doctoral Dissertation, University of Oklahoma. Accessed August 25, 2019. http://hdl.handle.net/11244/47142.

MLA Handbook (7^th Edition):

Perera, Sudantha. “Physical Knowledge Based Scalable Phased Array Antenna Modeling for Radar Systems.” 2016. Web. 25 Aug 2019.

Vancouver:

Perera S. Physical Knowledge Based Scalable Phased Array Antenna Modeling for Radar Systems. [Internet] [Doctoral dissertation]. University of Oklahoma; 2016. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/11244/47142.

Council of Science Editors:

Perera S. Physical Knowledge Based Scalable Phased Array Antenna Modeling for Radar Systems. [Doctoral Dissertation]. University of Oklahoma; 2016. Available from: http://hdl.handle.net/11244/47142

Queen Mary, University of London

5. Turati, Paolo. FDTD modelling of nanostructures at microwave frequency.

Degree: PhD, 2014, Queen Mary, University of London

URL: http://qmro.qmul.ac.uk/xmlui/handle/123456789/9062 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.667370

► The thesis which is hereby presented describes a study of the numerical modelling of the coupled interaction of nanostructures with electromagnetic fields in the range… (more)

▼ The thesis which is hereby presented describes a study of the numerical modelling of the coupled interaction of nanostructures with electromagnetic fields in the range of microwaves. This is a very ambitious task and requires a thorough and rigorous implementation of new algorithms designed to this purpose. The first issue to be encountered is the characterisation and the physical understanding of the behaviour of a nanostructure. The term itself, nanostructure, defines any device which has a nanometric size in at least one dimension, regardless of its material and geometry, hence it is a very wide definition. Carbon Nanotubes (CNT), quantum dots and quantum wells fall into this category, for example, and in electronics these structures are generally composed of semiconductor materials, like Silicon or Gallium Arsenide. The first step to take, in order to model such objects from an electronics point of view, is to solve the Schrodinger equation. The Schrodinger equation is a very general formula, widely used in quantum physics, which, when provided with a certain electrical potential in a material, determines the behaviour of the electrons in this material. Needless to say, the electrical potential is the DNA of a material or, in other words, it is the physical property which affects the propagation of electrons and therefore makes a material conducting or non-conducting. Nanostructures are often composed of several materials, hence the potential is not constant and, with opportune geometries, it is possible, in principle, to guide the electron currents through the device, as, for example, a channel in a MOSFET. This principle holds for very small structures where the electron transport can be considered ballistic, i.e. when the structures are smaller than the free mean path of the particle. The behaviour of the electrons is affected both by external factors, such as temperature or applied electric and magnetic fields, and internal factors, such as the electron mobility or the doping concentration, which are dependent on the used materials. This parameters play a very important role whilst modelling the behaviour of particles such as electrons and in this work the main focus is the study of the impact of external electromagnetic fields. The electromagnetic fields (EM fields) are composed of an electric field component and of a magnetic field component, which can be analysed separately in order to better understand the response of nanostructures to their application. A rigorous analysis is presented by showing numerical results, obtained with the modelling of the Schrodinger equation, compared with the expected theoretical results, exploiting simple structures, where it is possible to calculate the solutions analytically. The second part of thesis focuses on the impact of the EM fields on the nanostructure, hence the combined effect of both electric and magnetic fields affecting the electrons' propagation, and the mutual coupling of the fields with the quantum effects. Indeed the study of nanodevices for microwave…

Subjects/Keywords: 621.381; Electronic Engineering; Nanostructures; Electromagnetic fields; Finite-Difference Time-Domain Method

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Turati, P. (2014). FDTD modelling of nanostructures at microwave frequency. (Doctoral Dissertation). Queen Mary, University of London. Retrieved from http://qmro.qmul.ac.uk/xmlui/handle/123456789/9062 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.667370

Chicago Manual of Style (16^th Edition):

Turati, Paolo. “FDTD modelling of nanostructures at microwave frequency.” 2014. Doctoral Dissertation, Queen Mary, University of London. Accessed August 25, 2019. http://qmro.qmul.ac.uk/xmlui/handle/123456789/9062 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.667370.

MLA Handbook (7^th Edition):

Turati, Paolo. “FDTD modelling of nanostructures at microwave frequency.” 2014. Web. 25 Aug 2019.

Vancouver:

Turati P. FDTD modelling of nanostructures at microwave frequency. [Internet] [Doctoral dissertation]. Queen Mary, University of London; 2014. [cited 2019 Aug 25]. Available from: http://qmro.qmul.ac.uk/xmlui/handle/123456789/9062 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.667370.

Council of Science Editors:

Turati P. FDTD modelling of nanostructures at microwave frequency. [Doctoral Dissertation]. Queen Mary, University of London; 2014. Available from: http://qmro.qmul.ac.uk/xmlui/handle/123456789/9062 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.667370

University of Illinois – Urbana-Champaign

6. Ryu, Christopher Jayun. Finite-difference time-domain simulation of the Maxwell-Schrödinger system.

Degree: MS, Electrical & Computer Engineering, 2015, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/88032

► A thorough study on the finite-difference time-domain (FDTD) simulation of the Maxwell-Schrödinger system is given in this thesis. This system is a very effective tool… (more)

Subjects/Keywords: finite-difference method; finite-difference time-domain (FDTD); Maxwell-Schrödinger system; light-matter interaction; vector potential; perfectly matched layers (PML)

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ryu, C. J. (2015). Finite-difference time-domain simulation of the Maxwell-Schrödinger system. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/88032

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ryu, Christopher Jayun. “Finite-difference time-domain simulation of the Maxwell-Schrödinger system.” 2015. Thesis, University of Illinois – Urbana-Champaign. Accessed August 25, 2019. http://hdl.handle.net/2142/88032.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ryu, Christopher Jayun. “Finite-difference time-domain simulation of the Maxwell-Schrödinger system.” 2015. Web. 25 Aug 2019.

Vancouver:

Ryu CJ. Finite-difference time-domain simulation of the Maxwell-Schrödinger system. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2015. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/2142/88032.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ryu CJ. Finite-difference time-domain simulation of the Maxwell-Schrödinger system. [Thesis]. University of Illinois – Urbana-Champaign; 2015. Available from: http://hdl.handle.net/2142/88032

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

7. Su, Hsin-Hsiang. A Novel Approach for Modeling Diodes Without Reducing the Time Step in the FDTD Method.

Degree: PhD, Electrical Engineering, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1104113-144454

► In a high-speed digital system, issues of the signal integrity (SI) associated with the high-speed circuit and printed circuit boards (PCB) become more important as… (more)

Subjects/Keywords: Lumped devices; Equivalent current source method; Multi-port circuits; Finite-difference time-domain; Signal integrity

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Su, H. (2013). A Novel Approach for Modeling Diodes Without Reducing the Time Step in the FDTD Method. (Doctoral Dissertation). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1104113-144454

Chicago Manual of Style (16^th Edition):

Su, Hsin-Hsiang. “A Novel Approach for Modeling Diodes Without Reducing the Time Step in the FDTD Method.” 2013. Doctoral Dissertation, NSYSU. Accessed August 25, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1104113-144454.

MLA Handbook (7^th Edition):

Su, Hsin-Hsiang. “A Novel Approach for Modeling Diodes Without Reducing the Time Step in the FDTD Method.” 2013. Web. 25 Aug 2019.

Vancouver:

Su H. A Novel Approach for Modeling Diodes Without Reducing the Time Step in the FDTD Method. [Internet] [Doctoral dissertation]. NSYSU; 2013. [cited 2019 Aug 25]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1104113-144454.

Council of Science Editors:

Su H. A Novel Approach for Modeling Diodes Without Reducing the Time Step in the FDTD Method. [Doctoral Dissertation]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1104113-144454

University of Manchester

8. Hemmi, Tadashi. Locally one dimensional finite difference time domain method with frequency dependent media for three dimensional biomedical applications.

Degree: PhD, 2014, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/locally-one-dimensional-finite-difference-time-domain-method-with-frequency-dependent-media-for-three-dimensional-biomedical-applications(f5fc769a-7dc4-4cce-80f0-755054cb4bab).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607426

► The finite difference time domain (FDTD) method is commonly used for numerical simulations of the electromagnetic wave propagation in time domain. The FDTD method is… (more)

Subjects/Keywords: 621.3; frequency dependent locally one dimensional finite difference time domain; FD LOD FDTD method

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hemmi, T. (2014). Locally one dimensional finite difference time domain method with frequency dependent media for three dimensional biomedical applications. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/locally-one-dimensional-finite-difference-time-domain-method-with-frequency-dependent-media-for-three-dimensional-biomedical-applications(f5fc769a-7dc4-4cce-80f0-755054cb4bab).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607426

Chicago Manual of Style (16^th Edition):

Hemmi, Tadashi. “Locally one dimensional finite difference time domain method with frequency dependent media for three dimensional biomedical applications.” 2014. Doctoral Dissertation, University of Manchester. Accessed August 25, 2019. https://www.research.manchester.ac.uk/portal/en/theses/locally-one-dimensional-finite-difference-time-domain-method-with-frequency-dependent-media-for-three-dimensional-biomedical-applications(f5fc769a-7dc4-4cce-80f0-755054cb4bab).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607426.

MLA Handbook (7^th Edition):

Hemmi, Tadashi. “Locally one dimensional finite difference time domain method with frequency dependent media for three dimensional biomedical applications.” 2014. Web. 25 Aug 2019.

Vancouver:

Hemmi T. Locally one dimensional finite difference time domain method with frequency dependent media for three dimensional biomedical applications. [Internet] [Doctoral dissertation]. University of Manchester; 2014. [cited 2019 Aug 25]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/locally-one-dimensional-finite-difference-time-domain-method-with-frequency-dependent-media-for-three-dimensional-biomedical-applications(f5fc769a-7dc4-4cce-80f0-755054cb4bab).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607426.

Council of Science Editors:

Hemmi T. Locally one dimensional finite difference time domain method with frequency dependent media for three dimensional biomedical applications. [Doctoral Dissertation]. University of Manchester; 2014. Available from: https://www.research.manchester.ac.uk/portal/en/theses/locally-one-dimensional-finite-difference-time-domain-method-with-frequency-dependent-media-for-three-dimensional-biomedical-applications(f5fc769a-7dc4-4cce-80f0-755054cb4bab).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607426

Washington University in St. Louis

9. Wani, Satvik. Prediction Of Optical Properties Of Plasmonic Composites: Applications To Solar Energy Harvesting.

Degree: MA, Energy, Environmental and Chemical Engineering, 2010, Washington University in St. Louis

URL: https://openscholarship.wustl.edu/etd/830

► The finite difference time domain method was used to simulate the optical response of plasmonic composites with one and two nanoscale spherical metallic inclusion(s): Ag/Cu… (more)

Subjects/Keywords: Plasmonics; effective medium theory; solar; composite; FDTD; finite-difference time-domain method; mircroalgae; photobioreactor; nanoparticles

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wani, S. (2010). Prediction Of Optical Properties Of Plasmonic Composites: Applications To Solar Energy Harvesting. (Thesis). Washington University in St. Louis. Retrieved from https://openscholarship.wustl.edu/etd/830

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wani, Satvik. “Prediction Of Optical Properties Of Plasmonic Composites: Applications To Solar Energy Harvesting.” 2010. Thesis, Washington University in St. Louis. Accessed August 25, 2019. https://openscholarship.wustl.edu/etd/830.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wani, Satvik. “Prediction Of Optical Properties Of Plasmonic Composites: Applications To Solar Energy Harvesting.” 2010. Web. 25 Aug 2019.

Vancouver:

Wani S. Prediction Of Optical Properties Of Plasmonic Composites: Applications To Solar Energy Harvesting. [Internet] [Thesis]. Washington University in St. Louis; 2010. [cited 2019 Aug 25]. Available from: https://openscholarship.wustl.edu/etd/830.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wani S. Prediction Of Optical Properties Of Plasmonic Composites: Applications To Solar Energy Harvesting. [Thesis]. Washington University in St. Louis; 2010. Available from: https://openscholarship.wustl.edu/etd/830

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Washington

10. Coe, Ryan Lee. Computational Modeling of Optical Projection Tomographic Microscopy.

Degree: PhD, 2013, University of Washington

URL: http://hdl.handle.net/1773/23761

► Lung cancer is the leading cause of cancer related deaths worldwide with 1.37 millions deaths per year. In 2011, Computed Tomography became the first method… (more)

Subjects/Keywords: Computational Modeling; Finite-Difference Time-Domain Method; Lung Cancer; Microscopy; Mie theory; Biomedical engineering; bioengineering

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Coe, R. L. (2013). Computational Modeling of Optical Projection Tomographic Microscopy. (Doctoral Dissertation). University of Washington. Retrieved from http://hdl.handle.net/1773/23761

Chicago Manual of Style (16^th Edition):

Coe, Ryan Lee. “Computational Modeling of Optical Projection Tomographic Microscopy.” 2013. Doctoral Dissertation, University of Washington. Accessed August 25, 2019. http://hdl.handle.net/1773/23761.

MLA Handbook (7^th Edition):

Coe, Ryan Lee. “Computational Modeling of Optical Projection Tomographic Microscopy.” 2013. Web. 25 Aug 2019.

Vancouver:

Coe RL. Computational Modeling of Optical Projection Tomographic Microscopy. [Internet] [Doctoral dissertation]. University of Washington; 2013. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/1773/23761.

Council of Science Editors:

Coe RL. Computational Modeling of Optical Projection Tomographic Microscopy. [Doctoral Dissertation]. University of Washington; 2013. Available from: http://hdl.handle.net/1773/23761

11. Agrawal, Anant. Quantitative Assessment of Optical Coherence Tomography Imaging Performance with Phantom-Based Test Methods and Computational Modeling.

Degree: PhD, Electrical Engineering and Computer Science, 2015, Catholic U of America

URL: http://hdl.handle.net/1961/cuislandora:28259

►

Optical coherence tomography (OCT) is a powerful medical imaging modality that uniquely produces high-resolution cross-sectional images of tissue using low energy light. Its clinical applications… (more)

▼

Optical coherence tomography (OCT) is a powerful medical imaging modality that uniquely produces high-resolution cross-sectional images of tissue using low energy light. Its clinical applications and technological capabilities have grown substantially since its invention about twenty years ago, but efforts have been limited to develop tools to assess performance of OCT devices with respect to the quality and content of acquired images. Such tools are important to ensure information derived from OCT signals and images is accurate and consistent, in order to support further technology development, promote standardization, and benefit public health. The research in this dissertation investigates new physical and computational models which can provide unique insights into specific performance characteristics of OCT devices.Physical models, known as phantoms, are fabricated and evaluated in the interest of establishing standardized test methods to measure several important quantities relevant to image quality. (1) Spatial resolution is measured with a nanoparticle-embedded phantom and model eye which together yield the point spread function under conditions where OCT is commonly used. (2) A multi-layered phantom is constructed to measure the contrast transfer function along the axis of light propagation, relevant for cross-sectional imaging capabilities. (3) Existing and new methods to determine device sensitivity are examined and compared, to better understand the detection limits of OCT.A novel computational model based on the finite-difference time-domain (FDTD) method, which simulates the physics of light behavior at the sub-microscopic level within complex, heterogeneous media, is developed to probe device and tissue characteristics influencing the information content of an OCT image. This model is first tested in simple geometric configurations to understand its accuracy and limitations, then a highly realistic representation of a biological cell, the retinal cone photoreceptor, is created and its resulting OCT signals studied.The phantoms and their associated test methods have successfully yielded novel types of data on the specific performance parameters of interest, which can feed standardization efforts within the OCT community. The level of signal detail provided by the computational model is unprecedented and gives significant insights into the effects of subcellular structures on OCT signals. Together, the outputs of this research effort serve as new tools in the toolkit to examine the intricate details of how and how well OCT devices produce information-rich images of biological tissue.

Degree awarded: Ph.D. Electrical Engineering and Computer Science. The Catholic University of America

Advisors/Committee Members: Mathews, Scott (Advisor), Nehmetallah, Georges (Other), Pfefer, Joshua (Other).

Subjects/Keywords: Optics; Biomedical engineering; finite-difference time-domain method; optical coherence tomography; phantoms

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Agrawal, A. (2015). Quantitative Assessment of Optical Coherence Tomography Imaging Performance with Phantom-Based Test Methods and Computational Modeling. (Doctoral Dissertation). Catholic U of America. Retrieved from http://hdl.handle.net/1961/cuislandora:28259

Chicago Manual of Style (16^th Edition):

Agrawal, Anant. “Quantitative Assessment of Optical Coherence Tomography Imaging Performance with Phantom-Based Test Methods and Computational Modeling.” 2015. Doctoral Dissertation, Catholic U of America. Accessed August 25, 2019. http://hdl.handle.net/1961/cuislandora:28259.

MLA Handbook (7^th Edition):

Agrawal, Anant. “Quantitative Assessment of Optical Coherence Tomography Imaging Performance with Phantom-Based Test Methods and Computational Modeling.” 2015. Web. 25 Aug 2019.

Vancouver:

Agrawal A. Quantitative Assessment of Optical Coherence Tomography Imaging Performance with Phantom-Based Test Methods and Computational Modeling. [Internet] [Doctoral dissertation]. Catholic U of America; 2015. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/1961/cuislandora:28259.

Council of Science Editors:

Agrawal A. Quantitative Assessment of Optical Coherence Tomography Imaging Performance with Phantom-Based Test Methods and Computational Modeling. [Doctoral Dissertation]. Catholic U of America; 2015. Available from: http://hdl.handle.net/1961/cuislandora:28259

Colorado School of Mines

12. Charlesworth, Alexander E. Class of staggered grid algorithms and analysis for time-domain Maxwell systems, A.

Degree: MS(M.S.), Applied Mathematics and Statistics, 2016, Colorado School of Mines

URL: http://hdl.handle.net/11124/170015

► We describe, implement, and analyze a class of staggered grid algorithms for efficient simulation and analysis of time-domain Maxwell systems in the case of heterogeneous,… (more)

Subjects/Keywords: Computational Electrodynamics; Finite Difference Time Domain

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Charlesworth, A. E. (2016). Class of staggered grid algorithms and analysis for time-domain Maxwell systems, A. (Masters Thesis). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/170015

Chicago Manual of Style (16^th Edition):

Charlesworth, Alexander E. “Class of staggered grid algorithms and analysis for time-domain Maxwell systems, A.” 2016. Masters Thesis, Colorado School of Mines. Accessed August 25, 2019. http://hdl.handle.net/11124/170015.

MLA Handbook (7^th Edition):

Charlesworth, Alexander E. “Class of staggered grid algorithms and analysis for time-domain Maxwell systems, A.” 2016. Web. 25 Aug 2019.

Vancouver:

Charlesworth AE. Class of staggered grid algorithms and analysis for time-domain Maxwell systems, A. [Internet] [Masters thesis]. Colorado School of Mines; 2016. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/11124/170015.

Council of Science Editors:

Charlesworth AE. Class of staggered grid algorithms and analysis for time-domain Maxwell systems, A. [Masters Thesis]. Colorado School of Mines; 2016. Available from: http://hdl.handle.net/11124/170015

The Ohio State University

13. Wang, Shumin. Improved-accuracy algorithms for time-domain finite methods in electromagnetics.

Degree: PhD, Electrical Engineering, 2003, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1061225243

► Two novel finite-difference time-domai (FDTD) algorithms are proposed to reduce numerical dispersion error. One is to minimize the dispersion error at arbitrary angles. The other… (more)

Subjects/Keywords: Computational electromagnetics; Finite-difference time-domain method; Finite-element time-domain method

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, S. (2003). Improved-accuracy algorithms for time-domain finite methods in electromagnetics. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1061225243

Chicago Manual of Style (16^th Edition):

Wang, Shumin. “Improved-accuracy algorithms for time-domain finite methods in electromagnetics.” 2003. Doctoral Dissertation, The Ohio State University. Accessed August 25, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1061225243.

MLA Handbook (7^th Edition):

Wang, Shumin. “Improved-accuracy algorithms for time-domain finite methods in electromagnetics.” 2003. Web. 25 Aug 2019.

Vancouver:

Wang S. Improved-accuracy algorithms for time-domain finite methods in electromagnetics. [Internet] [Doctoral dissertation]. The Ohio State University; 2003. [cited 2019 Aug 25]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1061225243.

Council of Science Editors:

Wang S. Improved-accuracy algorithms for time-domain finite methods in electromagnetics. [Doctoral Dissertation]. The Ohio State University; 2003. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1061225243

14. Gopakumar,C. Development and Analysis of a Novel Isosceles Trapezoidal Dielectric Resonator Antenna For Wireless Communication.

Degree: Electronics, 2011, Cochin University of Science and Technology

URL: http://dyuthi.cusat.ac.in/purl/2761

►

This thesis describes the development and analysis of an Isosceles Trapezoidal Dielectric Resonator Antenna (ITDRA) by realizing different DR orientations with suitable feed configurations enabling… (more)

Subjects/Keywords: Isosceles Trapezoidal Dielectric Resonator Antenna; Wireless Communication; Dielectric Resonator (DR); Finite element method (FEM); finite difference time domain (FDTD); Electronics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gopakumar,C. (2011). Development and Analysis of a Novel Isosceles Trapezoidal Dielectric Resonator Antenna For Wireless Communication. (Thesis). Cochin University of Science and Technology. Retrieved from http://dyuthi.cusat.ac.in/purl/2761

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gopakumar,C. “Development and Analysis of a Novel Isosceles Trapezoidal Dielectric Resonator Antenna For Wireless Communication.” 2011. Thesis, Cochin University of Science and Technology. Accessed August 25, 2019. http://dyuthi.cusat.ac.in/purl/2761.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gopakumar,C. “Development and Analysis of a Novel Isosceles Trapezoidal Dielectric Resonator Antenna For Wireless Communication.” 2011. Web. 25 Aug 2019.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

Gopakumar,C. Development and Analysis of a Novel Isosceles Trapezoidal Dielectric Resonator Antenna For Wireless Communication. [Internet] [Thesis]. Cochin University of Science and Technology; 2011. [cited 2019 Aug 25]. Available from: http://dyuthi.cusat.ac.in/purl/2761.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gopakumar,C. Development and Analysis of a Novel Isosceles Trapezoidal Dielectric Resonator Antenna For Wireless Communication. [Thesis]. Cochin University of Science and Technology; 2011. Available from: http://dyuthi.cusat.ac.in/purl/2761

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

15. Oosting, R.M. A sensitivity analysis of acoustic wave propagation through the ankle joint space.:.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:b3d3a4ce-8d10-4727-8300-202d5b2732c6

► Ultrasound imaging is known to be non-invasive, fast, and cost-effective. However, a drawback is its reflection on bone. Therefore, an alternative acoustic wave propagating technique… (more)

▼ Ultrasound imaging is known to be non-invasive, fast, and cost-effective. However, a drawback is its reflection on bone. Therefore, an alternative acoustic wave propagating technique is being developed that eventually should be able to diagnose osteochondral defects (OCDs) that are now often missed with conventional imaging techniques. A novel technique is proposed that consists of acoustic wave propagation through the ankle joint space. The identification of OCDs is based on a presumed deviation between a reference signal (from a predicted model of the patient specific healthy ankle joint space) and a measured signal including the OCD in de ankle joint space. For the identification of OCDs, the diagnostic technique should be robust enough to cope with variation in acoustic parameters. To assess the influence of acoustic parameters, two dimensional finite-difference time-domain models of the ankle joint space were generated. A sensitivity analysis was performed to indicate the effect of variation in acoustic parameters of bone, the presence of soft tissues on acoustic wave propagation and the identification of OCDs. The minimal, maximal and mean values of the density, the Lamé’s constants, shear and bulk viscosity of bone were variated step by step. The values of acoustic bone parameters were derived from literature, those of the Achilles tendon and skin were determined experimentally. The output signals from the receiver that was placed on the outside of the ankle joint space were of main interest during present study. The output signals of the receiver in the middle and the anterior side of the ankle joint space were assessed to gain more insight in the behaviour of the acoustic waves within the ankle joint space. Variation in acoustic parameters of bone made noticeable alterations to the reference signal: variation in density resulted in normalized root mean square error (NRMSE) from 10%-16%, variation in the Lamé’s constants resulted in NRMSE from 8% -13% and variation in the bulk and shear viscosity ranged from 6% -10%. In comparison the NRMSE as a result of an OCD of 5 mm wide and 5 mm deep in the middle of the talus ranged from 5% to 7%. The receiver that was placed in the middle of the ankle joint space showed larger differences in amplitude and time shift between the healthy and defected ankle condition. The NRMSE caused by the variation in acoustic parameters of bone ranged from 1% - 10%, whereas the NRMSE caused by the presence of an OCD ranged from 10%-12%. The detectability of an OCD increases with the presence of Achilles tendon and skin. A slight difference in NRMSE and NMCC, the missing time shift and the least influence on the amplitude by the bulk and shear viscosity implies that acoustic wave propagation is less sensitive to variation in the shear and bulk viscosity than in density and Lamé’s constants. It is advised that the acoustic parameters of bone and soft tissues are estimated precisely when models of the ankle joint space for OCD identification purposes are developed. Advisors/Committee Members: Stijntjes, M., Tuijthof, G.J.M., Dankelman, J..

Subjects/Keywords: Osteochondral defects (OCDs); acoustic wave propagatoin; sensitivity analysis; pulse echo method; density bottle method; 2d finite-difference time -domain model

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Oosting, R. M. (2016). A sensitivity analysis of acoustic wave propagation through the ankle joint space.:. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:b3d3a4ce-8d10-4727-8300-202d5b2732c6

Chicago Manual of Style (16^th Edition):

Oosting, R M. “A sensitivity analysis of acoustic wave propagation through the ankle joint space.:.” 2016. Masters Thesis, Delft University of Technology. Accessed August 25, 2019. http://resolver.tudelft.nl/uuid:b3d3a4ce-8d10-4727-8300-202d5b2732c6.

MLA Handbook (7^th Edition):

Oosting, R M. “A sensitivity analysis of acoustic wave propagation through the ankle joint space.:.” 2016. Web. 25 Aug 2019.

Vancouver:

Oosting RM. A sensitivity analysis of acoustic wave propagation through the ankle joint space.:. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2019 Aug 25]. Available from: http://resolver.tudelft.nl/uuid:b3d3a4ce-8d10-4727-8300-202d5b2732c6.

Council of Science Editors:

Oosting RM. A sensitivity analysis of acoustic wave propagation through the ankle joint space.:. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:b3d3a4ce-8d10-4727-8300-202d5b2732c6

University of Georgia

16. Dunning, Sarah. Optimizing thin film filters for ultrashort pulse shaping.

Degree: PhD, Physics, 2009, University of Georgia

URL: http://purl.galileo.usg.edu/uga_etd/dunning_sarah_200912_phd

► In this research I develop automated thin film filter design techniques for ultrashort laser pulse shaping applications. Genetic algorithms and simulated annealing techniques are used… (more)

Subjects/Keywords: Optical filters; thin films; dielectric stacks; finite difference time domain; characteristic matrix method; genetic algorithms; simulated annealing

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dunning, S. (2009). Optimizing thin film filters for ultrashort pulse shaping. (Doctoral Dissertation). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/dunning_sarah_200912_phd

Chicago Manual of Style (16^th Edition):

Dunning, Sarah. “Optimizing thin film filters for ultrashort pulse shaping.” 2009. Doctoral Dissertation, University of Georgia. Accessed August 25, 2019. http://purl.galileo.usg.edu/uga_etd/dunning_sarah_200912_phd.

MLA Handbook (7^th Edition):

Dunning, Sarah. “Optimizing thin film filters for ultrashort pulse shaping.” 2009. Web. 25 Aug 2019.

Vancouver:

Dunning S. Optimizing thin film filters for ultrashort pulse shaping. [Internet] [Doctoral dissertation]. University of Georgia; 2009. [cited 2019 Aug 25]. Available from: http://purl.galileo.usg.edu/uga_etd/dunning_sarah_200912_phd.

Council of Science Editors:

Dunning S. Optimizing thin film filters for ultrashort pulse shaping. [Doctoral Dissertation]. University of Georgia; 2009. Available from: http://purl.galileo.usg.edu/uga_etd/dunning_sarah_200912_phd

University of Manchester

17. Abalenkovs, Maksims. Huygens subgridding for the frequency-dependent/finite-difference time-domain method.

Degree: PhD, 2011, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/huygens-subgridding-for-the-frequencydependentfinitedifference-timedomain-method(45581358-ff4d-4699-b3db-5bf76a021601).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549033

► Computer simulation of electromagnetic behaviour of a device is a common practice in modern engineering. Maxwell's equations are solved on a computer with help of… (more)

Subjects/Keywords: 515; Huygens Subgridding; Frequency Dependence; Finite-Difference Time-Domain Method; Auxiliary Differential Equation; Debye Relaxation; Computational Electromagnetics; Numerical Analysis

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Abalenkovs, M. (2011). Huygens subgridding for the frequency-dependent/finite-difference time-domain method. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/huygens-subgridding-for-the-frequencydependentfinitedifference-timedomain-method(45581358-ff4d-4699-b3db-5bf76a021601).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549033

Chicago Manual of Style (16^th Edition):

Abalenkovs, Maksims. “Huygens subgridding for the frequency-dependent/finite-difference time-domain method.” 2011. Doctoral Dissertation, University of Manchester. Accessed August 25, 2019. https://www.research.manchester.ac.uk/portal/en/theses/huygens-subgridding-for-the-frequencydependentfinitedifference-timedomain-method(45581358-ff4d-4699-b3db-5bf76a021601).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549033.

MLA Handbook (7^th Edition):

Abalenkovs, Maksims. “Huygens subgridding for the frequency-dependent/finite-difference time-domain method.” 2011. Web. 25 Aug 2019.

Vancouver:

Abalenkovs M. Huygens subgridding for the frequency-dependent/finite-difference time-domain method. [Internet] [Doctoral dissertation]. University of Manchester; 2011. [cited 2019 Aug 25]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/huygens-subgridding-for-the-frequencydependentfinitedifference-timedomain-method(45581358-ff4d-4699-b3db-5bf76a021601).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549033.

Council of Science Editors:

Abalenkovs M. Huygens subgridding for the frequency-dependent/finite-difference time-domain method. [Doctoral Dissertation]. University of Manchester; 2011. Available from: https://www.research.manchester.ac.uk/portal/en/theses/huygens-subgridding-for-the-frequencydependentfinitedifference-timedomain-method(45581358-ff4d-4699-b3db-5bf76a021601).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549033

University of Illinois – Urbana-Champaign

18. Chen, Peng. Application of the time-domain finite-element method to analysis of 3D electric machine problems.

Degree: MS, 1200, 2012, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/31925

► The motivation of this work is to apply the time-domain finite-element method (TDFEM) to the simulation of 3D electric machine problems. The features of the… (more)

Subjects/Keywords: time-domain; finite-element method; electric machine

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chen, P. (2012). Application of the time-domain finite-element method to analysis of 3D electric machine problems. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/31925

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chen, Peng. “Application of the time-domain finite-element method to analysis of 3D electric machine problems.” 2012. Thesis, University of Illinois – Urbana-Champaign. Accessed August 25, 2019. http://hdl.handle.net/2142/31925.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chen, Peng. “Application of the time-domain finite-element method to analysis of 3D electric machine problems.” 2012. Web. 25 Aug 2019.

Vancouver:

Chen P. Application of the time-domain finite-element method to analysis of 3D electric machine problems. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2012. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/2142/31925.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chen P. Application of the time-domain finite-element method to analysis of 3D electric machine problems. [Thesis]. University of Illinois – Urbana-Champaign; 2012. Available from: http://hdl.handle.net/2142/31925

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

19. Russer, Johannes A. Methodologies for electromagnetic field modeling for computer aided analysis of multi-domain physical interactions.

Degree: PhD, 1200, 2010, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/15578

► Several methodologies are presented in this work to facilitate the modeling of electromagnetic fields in the context of multi-domain physical interactions. Among the challenges for… (more)

▼ Several methodologies are presented in this work to facilitate the modeling of electromagnetic fields in the context of multi-domain physical interactions. Among the challenges for computer aided analysis of electromagnetic problems in interaction with other physical phenomena are the largely different temporal and spatial scales that may occur and the task of maintaining accuracy and computational efficiency in the implementation of boundary conditions for time-varying media. First, we present a methodology for the phenomenological modeling of passive intermodulation generation in metallic contacts due to electron tunneling. The methodology provides for the development of passive intermodulation source models that are compatible with general-purpose electromagnetic and non-linear network analysis-oriented circuit simulators. The derived model allows for an investigation of the impact of surface roughness and skin effect on the levels and frequency dependence of passive intermodulation interference. Thus, the model is intended to enhance the understanding of the passive intermodulation source due to electron tunneling in metallic contacts. The second methodology presented is a Lagrangian approach for increasing the accuracy of the finite difference time domain method for modeling wave propagation in geometries involving curved and moving boundaries. This methodology provides for the definition of an equivalent electromagnetic boundary value problem over a domain with fixed boundaries. A modified time-dependent operator is derived for the Lagrangian formulation, operating on a modified set of Maxwell's equations on a reference domain. This method relaxes spatial oversampling requirement and achieves high accuracy and computational efficiency. The third methodology provides for an efficient analysis of problems with widely separated time scales. We propose the application of the method of multi-time partial differential equations to the numerical solution of one-dimensional electromagnetic wave interactions involving highly disparate temporal variations in both excitation and time-varying media properties and boundary conditions. The temporal oversampling requirement is relaxed by introducing multiple time scales for quasi-periodic functions and, upon solution of the multivariate partial differential equation, we recover a solution to the univariate problem. Advisors/Committee Members: Cangellaris, Andreas C. (advisor), Cangellaris, Andreas C. (Committee Chair), Jin, Jianming (committee member), Ravaioli, Umberto (committee member), Schutt-Ain??, Jos?? E. (committee member).

Subjects/Keywords: multi-physics; multi-physics modeling; multi-timescale; electromagnetics; numerical electromagnetics; electromagnetic modeling; time domain method; finite difference time domain method; moving boundaries; curved boundaries; Lagrange method; Lagrangian method; Lagrangian mapping method; passive intermodulation; multi-time partial differential equation; multi-variate partial differential equation

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Russer, J. A. (2010). Methodologies for electromagnetic field modeling for computer aided analysis of multi-domain physical interactions. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/15578

Chicago Manual of Style (16^th Edition):

Russer, Johannes A. “Methodologies for electromagnetic field modeling for computer aided analysis of multi-domain physical interactions.” 2010. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed August 25, 2019. http://hdl.handle.net/2142/15578.

MLA Handbook (7^th Edition):

Russer, Johannes A. “Methodologies for electromagnetic field modeling for computer aided analysis of multi-domain physical interactions.” 2010. Web. 25 Aug 2019.

Vancouver:

Russer JA. Methodologies for electromagnetic field modeling for computer aided analysis of multi-domain physical interactions. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2010. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/2142/15578.

Council of Science Editors:

Russer JA. Methodologies for electromagnetic field modeling for computer aided analysis of multi-domain physical interactions. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2010. Available from: http://hdl.handle.net/2142/15578

University of Bradford

20. Ramli, Khairun Nidzam. 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.

Degree: PhD, 2011, University of Bradford

URL: http://hdl.handle.net/10454/5443

► 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… (more)

▼ 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 (SGFDTD) method. This facilitates a significant advance in the ability to predict electromagnetic absorption in inhomogeneous, anisotropic and lossy dielectric materials irradiated by geometrically intricate sources. The Method of Moments modelling employed a two-dimensional electric surface patch integral formulation solved by independent linear basis function methods in the circumferential and axial directions of the antenna wires. A similar orthogonal basis function is used on the end surface and appropriate attachments with the wire surface are employed to satisfy the requirements of current continuity. The surface current distributions on structures which may include closely spaced parallel wires, such as dipoles, loops and helical antennas are computed. The results are found to be stable and showed good agreement with less comprehensive earlier work by others. The work also investigated the interaction between overhead high voltage transmission lines and underground utility pipelines using the FDTD technique for the whole structure, combined with a subgridding method at points of interest, particularly the pipeline. The induced fields above the pipeline are investigated and analysed. FDTD is based on the solution of Maxwell's equations in differential form. It is very useful for modelling complex, inhomogeneous structures. Problems arise when open-region geometries are modelled. However, the Perfectly Matched Layer (PML) concept has been employed to circumvent this difficulty. The establishment of edge elements has greatly improved the performance of this method and the computational burden due to huge numbers of time steps, in the order of tens of millions, has been eased to tens of thousands by employing quasi-static methods. This thesis also illustrates the principle of the equivalent surface boundary employed close to the antenna for MoM-FDTD-SGFDTD hybridisation. It depicts the advantage of using hybrid techniques due to their ability to analyse a system of multiple discrete regions by employing the principle of equivalent sources to excite the coupling surfaces. The method has been applied for modelling human body interaction with a short range RFID antenna to investigate and analyse the near field and far field radiation pattern for which the cumulative distribution function of antenna radiation efficiency is presented. The field distributions of the simulated structures show reasonable and stable results at 900 MHz. This method facilitates deeper investigation of the phenomena in the interaction between electromagnetic fields and human tissues.

Subjects/Keywords: 004.19; Computational electromagnetics; Method of Moments (MoM); Finite-Difference Time-Domain (FDTD); Quasi-static method; Hybrid computational method; Subgridding; Principle of equivalent sources; Perfectly Matched Layer (PML); Antennas; Electromagnetic problems

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ramli, K. N. (2011). 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. (Doctoral Dissertation). University of Bradford. Retrieved from http://hdl.handle.net/10454/5443

Chicago Manual of Style (16^th Edition):

Ramli, Khairun Nidzam. “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.” 2011. Doctoral Dissertation, University of Bradford. Accessed August 25, 2019. http://hdl.handle.net/10454/5443.

MLA Handbook (7^th Edition):

Ramli, Khairun Nidzam. “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.” 2011. Web. 25 Aug 2019.

Vancouver:

Ramli KN. 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. [Internet] [Doctoral dissertation]. University of Bradford; 2011. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/10454/5443.

Council of Science Editors:

Ramli KN. 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. [Doctoral Dissertation]. University of Bradford; 2011. Available from: http://hdl.handle.net/10454/5443

University of Manchester

21. Rouf, Hasan. Unconditionally stable finite difference time domain methods for frequency dependent media.

Degree: PhD, 2010, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/unconditionally-stable-finite-difference-time-domain-methods-for-frequency-dependent-media(50e4adf1-d1e4-4ad2-ab2d-70188fb8b7b6).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.664533

► The efficiency of the conventional, explicit finite difference time domain (FDTD)method is constrained by the upper limit on the temporal discretization, imposed by the Courant–Friedrich–Lewy… (more)

Subjects/Keywords: 621.381; Finite difference time domain (FDTD) method; Crank Nicolson method; Alternating direction implicit (ADI)-FDTD method; Frequency dependent materials; Sparse matrix solvers; Bioelectromagnetics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rouf, H. (2010). Unconditionally stable finite difference time domain methods for frequency dependent media. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/unconditionally-stable-finite-difference-time-domain-methods-for-frequency-dependent-media(50e4adf1-d1e4-4ad2-ab2d-70188fb8b7b6).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.664533

Chicago Manual of Style (16^th Edition):

Rouf, Hasan. “Unconditionally stable finite difference time domain methods for frequency dependent media.” 2010. Doctoral Dissertation, University of Manchester. Accessed August 25, 2019. https://www.research.manchester.ac.uk/portal/en/theses/unconditionally-stable-finite-difference-time-domain-methods-for-frequency-dependent-media(50e4adf1-d1e4-4ad2-ab2d-70188fb8b7b6).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.664533.

MLA Handbook (7^th Edition):

Rouf, Hasan. “Unconditionally stable finite difference time domain methods for frequency dependent media.” 2010. Web. 25 Aug 2019.

Vancouver:

Rouf H. Unconditionally stable finite difference time domain methods for frequency dependent media. [Internet] [Doctoral dissertation]. University of Manchester; 2010. [cited 2019 Aug 25]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/unconditionally-stable-finite-difference-time-domain-methods-for-frequency-dependent-media(50e4adf1-d1e4-4ad2-ab2d-70188fb8b7b6).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.664533.

Council of Science Editors:

Rouf H. Unconditionally stable finite difference time domain methods for frequency dependent media. [Doctoral Dissertation]. University of Manchester; 2010. Available from: https://www.research.manchester.ac.uk/portal/en/theses/unconditionally-stable-finite-difference-time-domain-methods-for-frequency-dependent-media(50e4adf1-d1e4-4ad2-ab2d-70188fb8b7b6).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.664533

University of Manchester

22. Rouf, Hasan. Unconditionally Stable Finite Difference Time Domain Methods for Frequency Dependent Media.

Degree: 2010, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:83291

► The efficiency of the conventional, explicit finite difference time domain (FDTD)method is constrained by the upper limit on the temporal discretization, imposedby the Courant–Friedrich–Lewy (CFL)… (more)

Subjects/Keywords: Finite difference time domain (FDTD) method; Crank Nicolson method; Alternating direction implicit (ADI)-FDTD method; Frequency dependent materials; Sparse matrix solvers; Bioelectromagnetics

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rouf, H. (2010). Unconditionally Stable Finite Difference Time Domain Methods for Frequency Dependent Media. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:83291

Chicago Manual of Style (16^th Edition):

Rouf, Hasan. “Unconditionally Stable Finite Difference Time Domain Methods for Frequency Dependent Media.” 2010. Doctoral Dissertation, University of Manchester. Accessed August 25, 2019. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:83291.

MLA Handbook (7^th Edition):

Rouf, Hasan. “Unconditionally Stable Finite Difference Time Domain Methods for Frequency Dependent Media.” 2010. Web. 25 Aug 2019.

Vancouver:

Rouf H. Unconditionally Stable Finite Difference Time Domain Methods for Frequency Dependent Media. [Internet] [Doctoral dissertation]. University of Manchester; 2010. [cited 2019 Aug 25]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:83291.

Council of Science Editors:

Rouf H. Unconditionally Stable Finite Difference Time Domain Methods for Frequency Dependent Media. [Doctoral Dissertation]. University of Manchester; 2010. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:83291

23. 池田, 陽紀; イケダ, ヨウキ. 垂直導体のサージ伝搬特性を考慮した風力発電タワー周波数依存回路解析モデル : スイチョクドウタイノサージデンパントクセイオコウリョシタフウリョクハツデンタワーシュウハスウイゾンカイロカイセキモデル; Frequency dependent circuit analysis model including surge propagation characteristic on vertical conductor.

Degree: 博士(工学), 2015, Doshisha University / 同志社大学

URL: https://doors.doshisha.ac.jp/duar/repository/ir/17591/?lang=0 ; http://dx.doi.org/10.14988/di.2017.0000016234

風力発電システムは、現在世界中で普及しているが、その地上高と立地条件からしばしば落雷の被害を受け、稼働率の低下が問題視されている。本論文は、垂直導体である風力発電タワーにおける雷サージ解析の高精度化、高速化を目的とした垂直導体回路解析モデルの提案、およびその有用性のについて述べるとともに、風力発電所や洋上風車への拡張性についてまとめたものである。

Subjects/Keywords: 風力発電所，Wind Farm; 雷サージ解析，Lightning Surge Analysis; 回路解析，Circuit Analysis; Finite-difference time-domain (FDTD)法，Finite-difference time-domain (FDTD) method

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

池田, 陽紀; イケダ, �. (2015). 垂直導体のサージ伝搬特性を考慮した風力発電タワー周波数依存回路解析モデル : スイチョクドウタイノサージデンパントクセイオコウリョシタフウリョクハツデンタワーシュウハスウイゾンカイロカイセキモデル; Frequency dependent circuit analysis model including surge propagation characteristic on vertical conductor. (Thesis). Doshisha University / 同志社大学. Retrieved from https://doors.doshisha.ac.jp/duar/repository/ir/17591/?lang=0 ; http://dx.doi.org/10.14988/di.2017.0000016234

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

池田, 陽紀; イケダ, ヨウキ. “垂直導体のサージ伝搬特性を考慮した風力発電タワー周波数依存回路解析モデル : スイチョクドウタイノサージデンパントクセイオコウリョシタフウリョクハツデンタワーシュウハスウイゾンカイロカイセキモデル; Frequency dependent circuit analysis model including surge propagation characteristic on vertical conductor.” 2015. Thesis, Doshisha University / 同志社大学. Accessed August 25, 2019. https://doors.doshisha.ac.jp/duar/repository/ir/17591/?lang=0 ; http://dx.doi.org/10.14988/di.2017.0000016234.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

池田, 陽紀; イケダ, ヨウキ. “垂直導体のサージ伝搬特性を考慮した風力発電タワー周波数依存回路解析モデル : スイチョクドウタイノサージデンパントクセイオコウリョシタフウリョクハツデンタワーシュウハスウイゾンカイロカイセキモデル; Frequency dependent circuit analysis model including surge propagation characteristic on vertical conductor.” 2015. Web. 25 Aug 2019.

Vancouver:

池田, 陽紀; イケダ �. 垂直導体のサージ伝搬特性を考慮した風力発電タワー周波数依存回路解析モデル : スイチョクドウタイノサージデンパントクセイオコウリョシタフウリョクハツデンタワーシュウハスウイゾンカイロカイセキモデル; Frequency dependent circuit analysis model including surge propagation characteristic on vertical conductor. [Internet] [Thesis]. Doshisha University / 同志社大学; 2015. [cited 2019 Aug 25]. Available from: https://doors.doshisha.ac.jp/duar/repository/ir/17591/?lang=0 ; http://dx.doi.org/10.14988/di.2017.0000016234.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

池田, 陽紀; イケダ �. 垂直導体のサージ伝搬特性を考慮した風力発電タワー周波数依存回路解析モデル : スイチョクドウタイノサージデンパントクセイオコウリョシタフウリョクハツデンタワーシュウハスウイゾンカイロカイセキモデル; Frequency dependent circuit analysis model including surge propagation characteristic on vertical conductor. [Thesis]. Doshisha University / 同志社大学; 2015. Available from: https://doors.doshisha.ac.jp/duar/repository/ir/17591/?lang=0 ; http://dx.doi.org/10.14988/di.2017.0000016234

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

24. Li, Tzung-han. Effect of metallic accessories on the human head to the SAR distribution due to mobile phones.

Degree: Master, Electrical Engineering, 2010, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1213110-134124

► In recent years, the rapid development of wireless communications has resulted in much better quality of life due to easiness and multitudes in communications. The… (more)

Subjects/Keywords: SAM PHANTOM; Finite-Difference Time-Domain; Specific Absorption Rate

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Li, T. (2010). Effect of metallic accessories on the human head to the SAR distribution due to mobile phones. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1213110-134124

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Li, Tzung-han. “Effect of metallic accessories on the human head to the SAR distribution due to mobile phones.” 2010. Thesis, NSYSU. Accessed August 25, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1213110-134124.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Li, Tzung-han. “Effect of metallic accessories on the human head to the SAR distribution due to mobile phones.” 2010. Web. 25 Aug 2019.

Vancouver:

Li T. Effect of metallic accessories on the human head to the SAR distribution due to mobile phones. [Internet] [Thesis]. NSYSU; 2010. [cited 2019 Aug 25]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1213110-134124.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Li T. Effect of metallic accessories on the human head to the SAR distribution due to mobile phones. [Thesis]. NSYSU; 2010. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1213110-134124

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – Santa Cruz

25. Gonzalez, David Cota. Plasmonic Zero Waveguide Modes and Radiative Decay Engineering of Quantum Emitters.

Degree: Electrical Engineering, 2015, University of California – Santa Cruz

URL: http://www.escholarship.org/uc/item/8h1621s9

► AbstractPlasmonic Zero Waveguide Modes and Radiative Decay Engineering of QuantumEmittersbyDavid Cota GonzalezThis paper documents an investigation of plasmonic behavior and the application of plasmonic phenomena… (more)

Subjects/Keywords: Electrical engineering; Finite-Difference Time-Domain; Fluorescence Enhancement; Plasmonics; Quantum Emitters

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gonzalez, D. C. (2015). Plasmonic Zero Waveguide Modes and Radiative Decay Engineering of Quantum Emitters. (Thesis). University of California – Santa Cruz. Retrieved from http://www.escholarship.org/uc/item/8h1621s9

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gonzalez, David Cota. “Plasmonic Zero Waveguide Modes and Radiative Decay Engineering of Quantum Emitters.” 2015. Thesis, University of California – Santa Cruz. Accessed August 25, 2019. http://www.escholarship.org/uc/item/8h1621s9.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gonzalez, David Cota. “Plasmonic Zero Waveguide Modes and Radiative Decay Engineering of Quantum Emitters.” 2015. Web. 25 Aug 2019.

Vancouver:

Gonzalez DC. Plasmonic Zero Waveguide Modes and Radiative Decay Engineering of Quantum Emitters. [Internet] [Thesis]. University of California – Santa Cruz; 2015. [cited 2019 Aug 25]. Available from: http://www.escholarship.org/uc/item/8h1621s9.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gonzalez DC. Plasmonic Zero Waveguide Modes and Radiative Decay Engineering of Quantum Emitters. [Thesis]. University of California – Santa Cruz; 2015. Available from: http://www.escholarship.org/uc/item/8h1621s9

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan

26. Truong, Thomas 1995-. Design of an Ultra-wideband Frequency System for Non-destructive Root Imaging.

Degree: 2018, University of Saskatchewan

URL: http://hdl.handle.net/10388/8505

► This thesis outlines the design and implementation of an ultra-wideband imaging system for use in imaging potted plant root system architectures. Understanding the root system… (more)

▼ This thesis outlines the design and implementation of an ultra-wideband imaging system for use in imaging potted plant root system architectures. Understanding the root system architecture as plants develop is critical for plant phenotyping and ultra-wideband imaging systems have shown potential as a portable, low-cost solution to non-destructively imaging root system architectures. The proposed system is separated into three main subsystems: a Data Acquisition module, a Data Processing module, and an Image Processing and Analysis module. For each module, essential parameters and variables which largely affect the quality of the produced images and measurements of the system are analyzed and discussed. The Data Acquisition module is responsible for collecting ultra-wideband signal reflections off the potted roots in dry soil. The most critical variables for performance of the entire system are the relative permittivities of the root and the soil. Insufficient contrast between root and soil relative permittivity results in poor performance of the imaging system. Both simulated (using finite-difference time-domain methods) and experimental trials were performed and designed for data collection. The Data Processing module receives the ultra-wideband reflection data from the Data Acquisition module and produces a 2D image using delay-and-sum beamforming. This method takes advantage of known physical and electrical parameters to generate an energy mapping of reflective objects in the soil medium to be imaged. Careful design of parameters such as the steering vector and window size are essential to optimizing the quality of the results. The Image Processing and Analysis module removes any artifacts present in the produced images from the Data Processing module by primarily using morphological transformations. A modified top-hat transformation is used and the size of the structuring elements help remove unwanted artifacts. The system performs reasonably well under controlled soil conditions, and there are large improvements to be made with increasing the bandwidth of the ultra-wideband device. However, since the performance of the device is extremely reliant on the soil conditions, it is recommended that further work on ultra-wideband imaging systems for roots to be focused on measuring and modeling the complex electromagnetic properties of soil at high frequencies. Advisors/Committee Members: Chung, Chi Yung, Deters, Ralph, Teng, Daniel.

Subjects/Keywords: ultra-wideband; finite-difference time-domain; root imaging; plant phenotyping

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Truong, T. 1. (2018). Design of an Ultra-wideband Frequency System for Non-destructive Root Imaging. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/8505

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Truong, Thomas 1995-. “Design of an Ultra-wideband Frequency System for Non-destructive Root Imaging.” 2018. Thesis, University of Saskatchewan. Accessed August 25, 2019. http://hdl.handle.net/10388/8505.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Truong, Thomas 1995-. “Design of an Ultra-wideband Frequency System for Non-destructive Root Imaging.” 2018. Web. 25 Aug 2019.

Vancouver:

Truong T1. Design of an Ultra-wideband Frequency System for Non-destructive Root Imaging. [Internet] [Thesis]. University of Saskatchewan; 2018. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/10388/8505.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Truong T1. Design of an Ultra-wideband Frequency System for Non-destructive Root Imaging. [Thesis]. University of Saskatchewan; 2018. Available from: http://hdl.handle.net/10388/8505

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

27. Starosta, Matthew Samuel, 1981-. Three-dimensional computation of light scattering by multiple biological cells.

Degree: Electrical and Computer Engineering, 2010, University of Texas – Austin

URL: http://hdl.handle.net/2152/ETD-UT-2010-05-941

► This work presents an investigation into the optical scattering of heterogeneous cells with an application to two-photon imaging, optical scattering measurements and STED imaging. Using… (more)

▼ This work presents an investigation into the optical scattering of heterogeneous cells with an application to two-photon imaging, optical scattering measurements and STED imaging. Using the finite difference time-domain (FDTD) method, the full-wave scattering by many cells containing multiple organelles with varying indices of refraction is computed. These simulations were previously limited to single cells for reasons of computational cost. A superposition approximation that uses the coherent linear superposition of FDTD-determined farfield scattering patterns of small numbers of cells to estimate the scattering from a larger tissue was developed and investigated. It was found that for the approximation to be accurate, the scattering sub-problems must at minimum extend along the incident field propagation axis for the full depth of the tissue, preserving the scattering that takes place in the direction of propagation. The FDTD method was used to study the scattering effects of multiple inhomogeneous cells on the propagation of a focused Gaussian beam with an application to two-photon imaging. It was found that scattering is mostly responsible for the reduction in two-photon fluorescence signal as depth is increased. It was also determined that for the chosen beam parameters and the cell and organelle configurations used, the nuclei are the dominant scatterers. FDTD was also utilized in an investigation of cellular scattering effects on the propagation of a common depletion beam used in STED microscopy and how scattering impacts the image obtained with a STED microscope. An axial doughnut beam was formulated and implemented in FDTD simulations, along with a corresponding focused Gaussian beam to simulate a fluorescence excitation beam. It was determined that the depletion beam will maintain a well-defined axial null in spite of scattering, although scattering will reduce the resulting fluorescence signal with focal depth. Advisors/Committee Members: Pearce, John A., 1946- (advisor), Dunn, Andrew Kenneth, 1970- (advisor), Thomas, Robert J. (committee member), Milner, Thomas E. (committee member), Wilson, Preston S. (committee member), Ling, Hao (committee member).

Subjects/Keywords: Tissue optics; Optical propagation; Computational electromagnetics; Finite-difference time-domain

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Starosta, Matthew Samuel, 1. (2010). Three-dimensional computation of light scattering by multiple biological cells. (Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/ETD-UT-2010-05-941

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Starosta, Matthew Samuel, 1981-. “Three-dimensional computation of light scattering by multiple biological cells.” 2010. Thesis, University of Texas – Austin. Accessed August 25, 2019. http://hdl.handle.net/2152/ETD-UT-2010-05-941.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Starosta, Matthew Samuel, 1981-. “Three-dimensional computation of light scattering by multiple biological cells.” 2010. Web. 25 Aug 2019.

Vancouver:

Starosta, Matthew Samuel 1. Three-dimensional computation of light scattering by multiple biological cells. [Internet] [Thesis]. University of Texas – Austin; 2010. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/2152/ETD-UT-2010-05-941.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Starosta, Matthew Samuel 1. Three-dimensional computation of light scattering by multiple biological cells. [Thesis]. University of Texas – Austin; 2010. Available from: http://hdl.handle.net/2152/ETD-UT-2010-05-941

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toronto

28. Gu, Zixi. Enhancing the Efficiency of the Polynomial Chaos Expansion Finite-difference Time-domain Method.

Degree: 2014, University of Toronto

URL: http://hdl.handle.net/1807/68085

►

The polynomial chaos based finite-difference time-domain (PCE-FDTD) method is a promising technique for quantifying the impact of parameter variability on the performance metrics of electromagnetic… (more)

Subjects/Keywords: Finite-difference time-domain; polynomial chaos; uncertainty quantification; 0607

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gu, Z. (2014). Enhancing the Efficiency of the Polynomial Chaos Expansion Finite-difference Time-domain Method. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/68085

Chicago Manual of Style (16^th Edition):

Gu, Zixi. “Enhancing the Efficiency of the Polynomial Chaos Expansion Finite-difference Time-domain Method.” 2014. Masters Thesis, University of Toronto. Accessed August 25, 2019. http://hdl.handle.net/1807/68085.

MLA Handbook (7^th Edition):

Gu, Zixi. “Enhancing the Efficiency of the Polynomial Chaos Expansion Finite-difference Time-domain Method.” 2014. Web. 25 Aug 2019.

Vancouver:

Gu Z. Enhancing the Efficiency of the Polynomial Chaos Expansion Finite-difference Time-domain Method. [Internet] [Masters thesis]. University of Toronto; 2014. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/1807/68085.

Council of Science Editors:

Gu Z. Enhancing the Efficiency of the Polynomial Chaos Expansion Finite-difference Time-domain Method. [Masters Thesis]. University of Toronto; 2014. Available from: http://hdl.handle.net/1807/68085

University of Toronto

29. Sun, Chen. Minimizing Dispersion in FDTD Methods with CFL Limit Extension.

Degree: 2017, University of Toronto

URL: http://hdl.handle.net/1807/77899

►

The CFL extension in FDTD methods is receiving considerable attention in order to reduce the computational effort and save the simulation time. One of the… (more)

Subjects/Keywords: Finite difference time domain (FDTD); numerical stability; perturbation; subgridding; 0607

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sun, C. (2017). Minimizing Dispersion in FDTD Methods with CFL Limit Extension. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/77899

Chicago Manual of Style (16^th Edition):

Sun, Chen. “Minimizing Dispersion in FDTD Methods with CFL Limit Extension.” 2017. Masters Thesis, University of Toronto. Accessed August 25, 2019. http://hdl.handle.net/1807/77899.

MLA Handbook (7^th Edition):

Sun, Chen. “Minimizing Dispersion in FDTD Methods with CFL Limit Extension.” 2017. Web. 25 Aug 2019.

Vancouver:

Sun C. Minimizing Dispersion in FDTD Methods with CFL Limit Extension. [Internet] [Masters thesis]. University of Toronto; 2017. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/1807/77899.

Council of Science Editors:

Sun C. Minimizing Dispersion in FDTD Methods with CFL Limit Extension. [Masters Thesis]. University of Toronto; 2017. Available from: http://hdl.handle.net/1807/77899

University of Texas – Austin

30. -3307-2492. A comprehensive comparison of FFT-accelerated integral equation methods vs. FDTD for bioelectromagnetics.

Degree: Electrical and Computer Engineering, 2015, University of Texas – Austin

URL: http://hdl.handle.net/2152/31867

► The performance of two FFT-accelerated integral equation methods – the adaptive integral method (AIM) and GMRES-FFT – and the finite-difference time-domain (FDTD) method are systematically compared for… (more)

▼ The performance of two FFT-accelerated integral equation methods – the adaptive integral method (AIM) and GMRES-FFT – and the finite-difference time-domain (FDTD) method are systematically compared for their use in bioelectromagnetic (BioEM) analysis. The comparison involves four steps: (i) A BioEM benchmark is developed. The power absorbed by a human model illuminated by an impressed time-harmonic source is selected as the problem of interest. The benchmark consists of three inhomogeneous models (a multilayered spherical head phantom, an anatomical male, and an anatomical female model), two types of models (pixel or surface based), two types of sources (far or near), and three frequencies in the UHF band (402 MHz, 900 MHz, and 2.45 GHz). (ii) Error and cost measures are identified: The total power absorbed, the power absorbed in different tissues, and the absorbed power density are compared to either analytical results or results from other methods. The peak memory requirement and computation time of the simulations are recorded. (iii) The benchmark problems are solved using each method with optimized parameters. (iv) Plots of results, errors, and computational costs are presented and the tradeoff between increased accuracy and cost is quantified for each method. The data show that when surface-based models can be used AIM generally outperforms GMRES-FFT and FDTD: AIM achieves lower errors at the same computational cost or costs less to achieve the same error. When restricted to pixel-based models, however, FDTD generally outperforms GMRES-FFT and AIM: All three methods yield comparable errors, in most cases FDTD is less costly than GMRES-FFT (especially for anatomical models, far sources, and higher frequencies), and GMRES-FFT is slightly less expensive than AIM. These results suggest that for the type of BioEM analysis represented by the benchmark, AIM should be used whenever surface-based models are available and FDTD should be used if only pixel-based models are available. Advisors/Committee Members: Yılmaz, Ali E. (advisor), Biros, George (committee member).

Subjects/Keywords: Bioelectromagnetics; Computational electromagnetics; Integral equations; Method of moments (MOM); GMRES-FFT; Adaptive integral method (AIM); Finite-difference time-domain (FDTD); Visible human project

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

-3307-2492. (2015). A comprehensive comparison of FFT-accelerated integral equation methods vs. FDTD for bioelectromagnetics. (Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/31867

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

-3307-2492. “A comprehensive comparison of FFT-accelerated integral equation methods vs. FDTD for bioelectromagnetics.” 2015. Thesis, University of Texas – Austin. Accessed August 25, 2019. http://hdl.handle.net/2152/31867.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

-3307-2492. “A comprehensive comparison of FFT-accelerated integral equation methods vs. FDTD for bioelectromagnetics.” 2015. Web. 25 Aug 2019.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-3307-2492. A comprehensive comparison of FFT-accelerated integral equation methods vs. FDTD for bioelectromagnetics. [Internet] [Thesis]. University of Texas – Austin; 2015. [cited 2019 Aug 25]. Available from: http://hdl.handle.net/2152/31867.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

-3307-2492. A comprehensive comparison of FFT-accelerated integral equation methods vs. FDTD for bioelectromagnetics. [Thesis]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/31867

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Not specified: Masters Thesis or Doctoral Dissertation

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations