Дисертації з теми "Transmission properties"
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Reisemann, Matthias Heinrich. "Ultrasonic transmission properties of sea ice." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624200.
Повний текст джерелаSahin, Levent. "Transmission And Propagation Properties Of Novel Metamaterials." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610277/index.pdf.
Повний текст джерела#955
~0.05). This is the smallest aperture size to wavelength ratio in the contemporary literature according to our knowledge.
Jiang, Leaf Alden 1976. "Propagation properties of duobinary transmission in optical fibers." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/46195.
Повний текст джерелаIncludes bibliographical references (leaves 121-126).
by Leaf Alden Jiang.
B.S.
M.Eng.
Chen, Jianbing James 1971. "Transmission and reflection properties of layered left-handed materials." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/38681.
Повний текст джерелаIncludes bibliographical references (p. 179-189).
This thesis is concerned with the reflection and transmission properties of layered left-handed materials (LHM). In particular, the reflection properties of (LHM) slabs are studied for the Goos-Hanchen (GH) lateral shift phenomenon. We demonstrate a unique GH lateral shift phenomenon, which shows that both positive and negative shifts can be achieved using the same LHM slab configuration. This phenomenon is different from previously established cases where the GH lateral shift can be only negative or only positive when different LHM slab configurations are used. We also show that there exist two distinct cases with this unique phenomenon. One case has two regions of incident angles where the GH lateral shift directions are different, while another case has three regions with alternated GH shift directions. A generalized analytical formulation for analyzing the GH lateral shift direction is provided, which reveals that this unique phenomenon is related to the relative amplitudes of the growing and decaying evanescent waves inside the LHM slabs. The energy flux patterns within LHM slabs are further studied to show the influence of the evanescent waves on the GH shift direction change.
(cont.) Furthermore, the transmission property of LHM slabs are studied on the finite slabs' maging capability. First, the development of the numerical simulation tool - the Finite-Difference Time-Domain method (FDTD) - investigates the ability of the method to model a perfect lens made of a slab of homogeneous LHM. It is shown that because of the frequency dispersive nature of the medium and the time discretization, an inherent mismatch in the constitutive parameters exists between the slab and its surrounding medium. This mismatch in the real part of the permittivity and permeability is found to have the same order of magnitude as the losses typically used in numerical simulations. Hence, when the LHM slab is lossless, this mismatch is shown to be the main factor contributing to the image resolution loss of the slab. In addition, finite-size LHM slabs are studied both analytically and numerically since they have practical importance in the actual experiments. The analytical method is based on Huygens' principles using truncated current sheets that cover only the apertures of the slabs. It is shown that the main effects on the images' spectra due to the size of the slabs can be predicted by the proposed analytical method, which can, therefore, be used as a fast alternative to numerical simulations.
(cont.) Furthermore, the property of negative energy streams at the image plane is also investigated. This unique property is found to be due to the interactions between propagating and evanescent waves and can only occur with LHM slabs, of both finite-size and infinite size. The last part of the thesis deals with multi-layered media for the application to antenna isolations. The setup is with two horn antennas located beneath the ground plane with 10 A distance apart. In order to reduce the coupling between antennas, multi-layered media placed on top of the ground plane need to be designed to suppress the fields. After the problem is simplified to the dipole antenna coupling in infinite slabs, the method to evaluate the fields inside layered media is presented. This method obtains the spectral domain Green's function first and then transforms the fields to the spatial domain using the Sommerfeld-type integration. After the method is validated using right-handed materials (RHM) from references, it is extended to include media like LHM as well as p. negative material and : negative material . The validation with these materials are done by comparing the results with CST microwave studio simulations. The first configuration for the antenna isolation design if one layer slab backed by the grounded plane. Two different approaches are used to find the optimum slab parameters for the isolation.
(cont.) One approach is to use Genetic Algorithm (GA) to optimize the slab's constitutive parameters and the thickness for a minimum coupling level. The other approach is to develop an analytic asymptotic expression for the field, and then used the expression to design the slab parameters for the best isolation. We conclude that both approaches yield the same design for the given configuration. The effectiveness of the design is also validated on a grounded finite slab, which is the representation of the actual application. Finally, multi-layered media for the antenna isolation is studied. GA method is applied with an optimization scheme tailed for a five layered structure. We show that GA converges very fast to the solution and the result yields satisfactory isolation between the antennas.
by Jianbing James Chen.
Ph.D.
Coneybeer, Robert T. "Transient thermal models for substation transmission components." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/17686.
Повний текст джерелаWeis, R. Stephen. "Electromagnetic transmission and reflection characteristics of anisotropic multilayered structures." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/13546.
Повний текст джерелаPaul, John. "Modelling of general electromagnetic material properties in TLM." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267589.
Повний текст джерелаWoo, Kwangje. "Transmission properties of sub-wavelength hole arrays in metal films." [Gainesville, Fla.] : University of Florida, 2006. http://purl.fcla.edu/fcla/etd/UFE0015340.
Повний текст джерелаBilge, Serafettin. "Transmission Properties Of Fishnet Structure As A Left Handed Metamaterial." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610467/index.pdf.
Повний текст джерелаwas used. A code following a numerical procedure in order to retrieve constitutive parameters of a periodic structure which was written in Matlab®
was used in this thesis.
Ramanathan, Sathish Kumar. "Sound transmission properties of honeycomb panels and double-walled structures." Doctoral thesis, KTH, MWL Marcus Wallenberg Laboratoriet, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-96538.
Повний текст джерелаQC 20120607
Heydarnejad, Jahangir. "Molecular characterization and transmission properties of Iranian wheat stripe virus." Thesis, University of Reading, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250732.
Повний текст джерелаKarlsson, Linda. "Transmission Electron Microscopy of 2D Materials : Structure and Surface Properties." Doctoral thesis, Linköpings universitet, Tunnfilmsfysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-127526.
Повний текст джерелаXie, Yong. "Transmission Properties of Sub-Wavelength Metallic Slits and Their Applications." Diss., The University of Arizona, 2006. http://hdl.handle.net/10150/195217.
Повний текст джерелаRosenthal, Tobias. "Transmission electron microscopy and properties of thermoelectric chalcogenides and luminescent oxonitridosilicates." Diss., Ludwig-Maximilians-Universität München, 2014. http://nbn-resolving.de/urn:nbn:de:bvb:19-174902.
Повний текст джерелаShemuly, Dana. "Design and measurements of novel electromagnetic properties in spiral transmission fibers." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76118.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 92-96).
One dimensional photonic band gap fibers have proven to be fascinating and versatile devices, as demonstrated by many applications. The ability to control and design these fibers to achieve specific functionalities will enable us to advance the research done with these fibers and to gain new applications. In this work we explore our ability to control different fabrication parameters to design a fiber according to certain requirements. We use these capabilities to design and fabricate a near IR fiber for high peak power laser transmission. Since a multimode fiber supports many modes one can gain further control over fiber properties by controlling modal content in the fiber. We developed two techniques for controlled coupling and demonstrated them using one dimensional photonic band gap fibers. Using a spatial light modulator, one can dynamically control the modal content in the fiber, including superposition of more than one mode. We experimentally demonstrate this capability by coupling to one of two modes and superposition of the two. Using a static technique, we experimentally demonstrate a single-mode transmission of the azimuthally polarized mode (TEoi) in a highly multimode cylindrical photonic band gap fiber. Theoretical calculations verify the validity of this technique and accurately predict the coupling efficiency. Single-mode propagation in a large hollow core fiber can enable numerous applications, especially in control of particles along the entire length of the fiber. Finally, we examined the effects of the spiral cross-section of the fiber on its optical properties. The fiber's chiral symmetry combined with its infinite translational symmetry creates a truly planar chiral structure, similar to many artificial chiral structures recently studied. The low-symmetry geometry of the fiber, which lacks any rotational and mirror symmetries, exclusively supports modes with angular momentum greater than zero and shows in-principle directional optical activity and asymmetric propagation. We use general symmetry arguments to provide qualitative analysis of the waveguide's modes and numerically corroborate this using finite element simulation. We also demonstrated these properties experimentally using spiral fibers.
by Dana Shemuly.
Ph.D.
van, Doremalen Neeltje. "Receptor binding properties, cell tropism and transmission of influenza A virus." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/10738.
Повний текст джерелаWilkinson, Sonja Renae. "A study of the optical transmission properties of the polymer HPG /." Full-text version available from OU Domain via ProQuest Digital Dissertations, 2000.
Знайти повний текст джерелаStanislavov, A. S., L. B. Sukhodub, V. N. Kuznetsov, Леонід Федорович Суходуб, Леонид Федорович Суходуб, and Leonid Fedorovych Sukhodub. "Magnetite-polymer Nanoparticles: Structure and Properties." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42573.
Повний текст джерелаHu, Boxi David, and Martens Dan Von. "Transmission Properties of an Electron in One Dimensional Crystals with Periodic Potentials." Thesis, KTH, Teoretisk fysik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-103463.
Повний текст джерелаKennedy, Christopher. "Properties of High Energy Laser Light Transmission through Large Core Optical Cables." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5797.
Повний текст джерелаM.S.
Masters
Optics and Photonics
Optics and Photonics
Optics
Galand, Quentin. "Experimental investigation of the diffusive properties of ternary liquid systems." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209626.
Повний текст джерелаFor each of these techniques, experimental set-ups were designed, implemented and calibrated. The procedures for identifying the ternary diffusion coefficients from the measured compositions fields were studied in details.
The Open Ended Capillary Technique was applied under gravity condition to study isothermal diffusion binary and ternary systems. Difficulties related to a new procedure for interpreting the data collected at short times of the experiments are highlighted and its implication in the generalization of the technique for the study of multicomponent systems is discussed.
The Transient Interferometric Technique was used to perform an experimental study of three binary systems under gravity conditions. It was also applied for the investigation of ternary systems under microgravity condition in the frame of the DSC on SODI experiment, which took place aboard the International Space Station in 2011. The experimental results are reported and the analysis of the accuracy of the technique is presented. The TIT is the first technique ever providing accurate experimental measurements of the complete set of diffusion and thermodiffusion coefficients for ternary liquid systems.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Fan, Jing, and 范菁. "Heat transport in nanofluids and biological tissues." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47752853.
Повний текст джерелаpublished_or_final_version
Mechanical Engineering
Doctoral
Doctor of Philosophy
Brooks, Evan Monticino Michael G. "Determining properties of synaptic structure in a neural network through spike train analysis." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-3702.
Повний текст джерелаChen, Xiaohong, and 陳曉宏. "Theoretical and numerical studies of left-handed materials: transmission properties, beam propagationand localization." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B43278474.
Повний текст джерелаCullen, T. J. "Transmission properties of single-mode Y-junction and bend structures for integrated optics." Thesis, University of Glasgow, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356560.
Повний текст джерелаGillies, Murray Fulton. "An investigation of the magnetic properties of spin-valves using transmission electron microscopy." Thesis, University of Glasgow, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294195.
Повний текст джерелаSinger, Joshua H. "Postnatal development of glycinergic synaptic transmission and biophysical properties of glycine receptor-channels /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/10535.
Повний текст джерелаChan, Ho Ka. "Impact of synaptic properties, background activities and conductance effects on neural computation of correlated inputs." HKBU Institutional Repository, 2015. https://repository.hkbu.edu.hk/etd_oa/176.
Повний текст джерелаRoth, Eric. "Nucleation and Heat Transfer in Liquid Nitrogen." PDXScholar, 1993. https://pdxscholar.library.pdx.edu/open_access_etds/1370.
Повний текст джерелаMcNett, Gabriel Dion. "Noise and signal transmission properties as agents of selection in the vibrational communication environment." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4677.
Повний текст джерелаThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on February 25, 2008) Vita. Includes bibliographical references.
Zhang, Rong. "Preparation, electroactive properties and field controlled microwave transmission of polythiophene based conducting polymer composites." Thesis, University of Sheffield, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398610.
Повний текст джерелаSims, Robert. "On the transmission properties of synapses made between granule cells and cerebellar Purkinje cells." Thesis, Aston University, 2003. http://publications.aston.ac.uk/11071/.
Повний текст джерелаChen, Xiaohong. "Theoretical and numerical studies of left-handed materials transmission properties, beam propagation and localization /." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B43278474.
Повний текст джерелаPandey, Amit Nath. "Fault detection of multivariable system using its directional properties." Texas A&M University, 2004. http://hdl.handle.net/1969.1/3354.
Повний текст джерелаAMEEN, HASHIM FARHAN, Eid Jamal Al, and Abdulkhaliq Al-Salem. "Comparing of Real-Time Properties in Networks Based On IPv6 and IPv4." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-21535.
Повний текст джерелаLi, Fang. "Microstructural properties of semiconductor nanostructures." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:396024e1-a646-40ca-8212-cad925b18311.
Повний текст джерелаThanawala, Monica Shishir. "Control of Neurotransmitter Release Properties by Presynaptic Calcium." Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11529.
Повний текст джерелаEsteky, Hossein. "Functional Properties and Organization of Primary Somatosensory Cortex." Thesis, University of North Texas, 1993. https://digital.library.unt.edu/ark:/67531/metadc278197/.
Повний текст джерелаJalilikashtiban, Reza. "Structural and compositional properties of semiconductor quantum dots and nanocrystals." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/structural-and-compositional-properties-of-semiconductor-quantum-dots-and-nanocrystals(ceb22d89-7ed7-4c54-9d4c-612a9331404d).html.
Повний текст джерелаHernandez, Francis Georg. "The development of a method for predicting the thermal performanceof partially buried walls." Thesis, Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/22364.
Повний текст джерелаWandkowsky, Nancy [Verfasser], and G. [Akademischer Betreuer] Drexlin. "Study of background and transmission properties of the KATRIN spectrometers / Nancy Wandkowsky. Betreuer: G. Drexlin." Karlsruhe : KIT-Bibliothek, 2013. http://d-nb.info/1044956070/34.
Повний текст джерелаPhromphen, Phannaphat. "The permeation and moisture transmission properties of a thermosensitive membrane barrier for chemical protective clothing." Thesis, University of Leeds, 2015. http://etheses.whiterose.ac.uk/12002/.
Повний текст джерелаCardoch, Sebastian. "Studying Atomic Vibrations by Transmission Electron Microscopy." Thesis, Uppsala universitet, Materialteori, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-305370.
Повний текст джерелаAcosta, Guillermo Antonio. "Scandium Oxide Thin Films and Their Optical Properties in the Extreme Ultraviolet." BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/1285.
Повний текст джерелаRosenthal, Tobias [Verfasser], and Oliver [Akademischer Betreuer] Oeckler. "Transmission electron microscopy and properties of thermoelectric chalcogenides and luminescent oxonitridosilicates / Tobias Rosenthal. Betreuer: Oliver Oeckler." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2014. http://d-nb.info/1060632292/34.
Повний текст джерелаIglesias, Miguel Olmedo. "Investigation of the chirp properties of DFB-EAM’s for high speed baseband and RoF transmission links." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-100735.
Повний текст джерелаBishop, Matthew T. "Role of PRNP codon 129 genotype in defining strain transmission properties of human transmissible spongiform encephalopathy." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/4236.
Повний текст джерелаSchneider, Johannes Matthias Peter [Verfasser]. "Assessment of cortical bone properties at the tibia using axial transmission ultrasound / Johannes Matthias Peter Schneider." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2019. http://d-nb.info/1202042228/34.
Повний текст джерелаAl-Aridhee, Tahseen. "Numerical study of optical properties of single and periodic nanostructures : from nanoantennas to enhanced transmission metamaterials." Thesis, Besançon, 2016. http://www.theses.fr/2016BESA2004/document.
Повний текст джерелаThe release of the rst report by Faraday in 1857 set the foundation of the production of metal nanoparticlesand their unexpected optical properties (coloring). More recently, controlling and guiding light via plasmonicresonance in nanostructures enable a lot of applications affecting everyday life that involves light. Plasmonresonance of metallic structures is a key phenomenon that allows unique optical properties through the interactionof light with the free electrons of the metal. The excitation of Localized Surface Plasmon Resonance(LSPR) leads to turn-on large local enhancements of electromagnetic energy as within antennas or to routelight as waveguide to desired region with high transmission through the excitation of Propagating SurfacePlasmon (PSP). During this thesis, we have developed an existing algorithm in order to calculate the opticalresponse of NPs of any shape. We have especially determined the localized energy enhancement factor interm of optical response of nano-antenna. This anisotropic (polarization dependent) NPs type can feature, atplasmon resonance, scattering efciency factor higher than 25. Moreover, an important systematic study hasbeen performed in order to optimize design of such NPs.Concerning the PSP that are involved in the enhanced transmission through Annular Aperture Arrays (AAAs),we systematically study the properties of the excitation of the peculiar Transverse ElectroMagnetic (TEM) guidedmode inside such nano-apertures. A complete numerical study is performed to correctly design the structurebefore it is experimentally characterized. For reasons associated to fabrication constraints and efciency,a slanted AAA made in perfectly conducting metal is proposed and studied. We numerically and analyticallydemonstrate some intrinsic properties of the structure showing a transmission coefcient of at least 50%ofan un-polarized incident beam independently of the illumination configuration (polarization, angle, and planeof incidence). At the TEM peak transmission, the laminar flow of the energy through the structure can exhibitgiant deviation over very small distances ( ). The results presented in this thesis could be considered as animportant contribution to the understanding of the enhanced transmission phenomenon based on the excitationof guided modes
Beemat, Jaspreet S. "Processing and Properties of Hybrid Silane-Epoxy Nanocomposite Coatings." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1352992819.
Повний текст джерела