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Dissertations / Theses on the topic 'Wake Penetration'

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Published: 6 September 2023

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1

Hepton, Peter. "Shear wave velocity measurements during penetration testing." Thesis, Bangor University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330070.

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2

Gillespie, Donald G. (Donald Gardner). "Evaluating shear wave velocity and pore pressure data from the seismic cone penetration test." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30573.

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Recent developments in cone penetration testing have resulted in the addition of both pore pressure measurements and seismometers. The seismometers allow shear wave velocity testing to be performed at designated intervals. Both of these additions were researched to improve their application and interpretation. The significant factors effecting the pore pressure generated during cone penetration tests are discussed. The importance of various factors is especially dependent upon permeability, strength, and stiffness. For all sands tested, pore pressures lower than static were recorded behind th
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3

Onaran, Özlem. "The effect of import penetration on labor market outcomes in Austrian manufacturing industry." Inst. für Volkswirtschaftstheorie und -politik, WU Vienna University of Economics and Business, 2008. http://epub.wu.ac.at/1264/1/document.pdf.

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This paper estimates the effects of imports on employment, wages, and the wage share in Austria for the period of 1990-2005 using panel data of manufacturing industry. Imports are disaggregated according to their origin and as final vs. intermediate imports. There is evidence of significant negative effects of imports on employment, wages and the wage share. Particularly workers in high skilled sectors experience negative effects. Offshoring to both Eastern Europe and the developed countries have a negative impact on employment, whereas offshoring to the East has a positive effect on wages, in
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4

Kabutz, Marten Herbert. "RF hardware design of a stepped frequency continuous wave ground penetrating radar." Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/18227.

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Bibliography: pages 86-88.<br>Research into stepped frequency continuous wave ground penetrating radar (SFCW GPR) at UCT has been carried out since 1990. A first generation system comprising of Hewlett-Packard test equipment controlled by a PC was assembled. Cavity-backed log spiral antennas were designed and built by the University of Stellenbosch for the specific use of ground penetrating radar. Measurements with the first generation system proved the concept of SFCW GPR and thus a dedicated second generation system was planned. A SFCW GPR system was designed to replace the first generation
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5

Blomqvist, Mikael. "Construction and evaluation of a magnetoresistive ground penetrating radar system." Thesis, Uppsala universitet, Ångström Space Technology Centre (ÅSTC), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-159904.

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This Master Thesis examines the possibility to apply a magnetometer developed by the Ångstöm space technology center to a small magnetic ground penetrating radar system with dimension in the order of one dm³. The magnetometer is broadband (DC-1GHz) and miniaturized. Loop antennas are used to transmit the signal.    A series of experiments have been performed in order to characterize the system, mainly examining the ability to determine distance to a target, using continuous sine wave signals and pulse trains. Standing wave patterns are formed between antenna and target and can be used for dete
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Zhao, Hongyi. "Numerical Analysis of Wave-induced Seabed Response in the Vicinity of Marine Structures." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/365468.

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Knowledge and understanding of wave-induced dynamic soil response are of particular importance for marine geotechnical engineers involved in the design of the foundation for marine infrastructures such as breakwaters, platforms, pipelines and offshore wind turbines. In general, the nonlinearity of deformation occurring in loosely deposited sand foundations with a low relative density, and a low standard penetration test (SPT) value can presumably lead to the build-up of pore water pressures of foundation soil as a result of its plastic volumetric contraction under cyclic shearing. Liquefaction
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7

Hall, James Kumar. "Accuracy of the method of steepest descents for a spherical wave penetrating a planar boundary." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ57290.pdf.

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8

Rogge, Matthew Douglas. "In-process sensing of weld penetration depth using non-contact laser ultrasound system." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31698.

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Thesis (Ph.D)--Mechanical Engineering, Georgia Institute of Technology, 2010.<br>Committee Chair: Ume, Charles; Committee Member: Chen, Ye-Hwa; Committee Member: Michaels, Jennifer; Committee Member: Sadegh, Nader; Committee Member: Vachtsevanos, George. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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9

Liao, Tianfei. "Post processing of cone penetration data for assessing seismic ground hazards, with application to the New Madrid seismic zone." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-05042005-133640/.

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Thesis (Ph. D.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2006.<br>Mayne, Paul W., Committee Chair ; Goldsman, David, Committee Member ; Lai, James, Committee Member ; Rix, Glenn J., Committee Member ; Santamarina, J. Carlos, Committee Member.
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10

Guha, Swagata. "Ground penetrating radar response to thin layers examples from Waites Island, South Carolina /." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0000593.

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11

Langman, Alan. "The design of hardware and signal processing for a stepped frequency continuous wave ground penetrating radar." Doctoral thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/6932.

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Includes bibliographical references.<br>A Ground Penetrating Radar (GPR) sensor is required to provide information that will allow the user to detect, classify and identify the target. This is an extremely tough requirement, especially when one considers the limited amount of information provided by most GPRs to accomplish this task. One way of increasing this information is to capture the complete scattering matrix of the received radar waveform. The objective of this thesis is to develop a signal processing technique to extract polarimetric feature vectors from Stepped Frequency Continuous W
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12

Watson, Francis Maurice. "Better imaging for landmine detection : an exploration of 3D full-wave inversion for ground-penetrating radar." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/better-imaging-for-landmine-detection-an-exploration-of-3d-fullwave-inversion-for-groundpenetrating-radar(720bab5f-03a7-4531-9a56-7121609b3ef0).html.

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Humanitarian clearance of minefields is most often carried out by hand, conventionally using a a metal detector and a probe. Detection is a very slow process, as every piece of detected metal must treated as if it were a landmine and carefully probed and excavated, while many of them are not. The process can be safely sped up by use of Ground-Penetrating Radar (GPR) to image the subsurface, to verify metal detection results and safely ignore any objects which could not possibly be a landmine. In this thesis, we explore the possibility of using Full Wave Inversion (FWI) to improve GPR imaging f
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13

McGillivray, Alexander Vamie. "Enhanced Integration of Shear Wave Velocity Profiling in Direct-Push Site Characterization Systems." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19714.

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Enhanced Integration of Shear Wave Velocity Profiling in Direct-Push Site Characterization Systems Alexander V. McGillivray 370 Pages Directed by Dr. Paul W. Mayne Shear wave velocity (VS) is a fundamental property of soils directly related to the shear stiffness at small-strains. Therefore, VS should be a routine measurement made during everyday site characterization. There are several lab and field methods for measuring VS, but the seismic piezocone penetration test (SCPTu) and the seismic dilatometer test (SDMT) are the most efficient means for profiling the small-strain stiffness in addi
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14

Sule, Suki Dauda. "An evaluation of the performance of multi-static handheld ground penetrating radar using full wave inversion for landmine detection." Thesis, University of Hull, 2018. http://hydra.hull.ac.uk/resources/hull:16567.

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This thesis presents an empirical study comparing the ability of multi-static and bi-static, handheld, ground penetrating radar (GPR) systems, using full wave inversion (FWI), to determine the properties of buried anti-personnel (AP) landmines. A major problem associated with humanitarian demining is the occurrence of many false positives during clearance operations. Therefore, a reduction of the false alarm rate (FAR) and/or increasing the probability of detection (POD) is a key research and technical objective. Sensor fusion has emerged as a technique that promises to significantly enhance l
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15

Zietsman, Christian Frederick. "Theory, design and implementation of an IF cancellation module for use in a stepped frequency continuous wave ground penetrating radar." Master's thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/14972.

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Bibliography: leaves 64-68.<br>A device has been designed that cancels the leakage signal between the transmit and receive antenna in a Stepped Frequency Continuous Wave Ground Penetrating Radar. The front end of the radar operates at high signal levels and, as a result, a large signal is coupled directly from the transmit to the receive antenna. This signal uses a signiï¬ cant part of the dynamic range of the data-capturing device, an analogue-to-digital converter (ADC). The objective of this cancellation is thus to increase the effective instantaneous dynamic range of the radar system. Simul
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16

Ku, Taeseo. "Geostatic stress state evaluation by directional shear wave velocities, with application towards geocharacterization at Aiken, SC." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45905.

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Evaluations of stress history and the geostatic state of stress of soils are ascertained on the basis of field geophysical measurements that provide paired complementary types of shear waves. It is well-established that multiple types of shear waves occur in the ground due to their directional and polarization properties. The shear wave velocity (Vs) provides the magnitude of small strain stiffness (G0) which depends on effective stress, void ratio, stress history, and other factors (cementation, age, saturation). Herein, this study examines a hierarchy of shear wave modes with different direc
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17

Park, Joongsuk. "Development of microwave and millimeter-wave integrated-circuit stepped-frequency radar sensors for surface and subsurface profiling." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/1588.

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Two new stepped-frequency continuous wave (SFCW) radar sensor prototypes, based on a coherent super-heterodyne scheme, have been developed using Microwave Integrated Circuits (MICs) and Monolithic Millimeter-Wave Integrated Circuits (MMICs) for various surface and subsurface applications, such as profiling the surface and subsurface of pavements, detecting and localizing small buried Anti-Personnel (AP) mines and measuring the liquid level in a tank. These sensors meet the critical requirements for subsurface and surface measurements including small size, light weight, good accuracy, fine reso
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18

Dojack, Lisa Marie. "Assessing the utility of ground penetrating radar in archaeology on the Northwest Coast : the 'new wave', 'all Snell', or 'it just hertz'?" Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43041.

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This project investigates the application of ground penetrating radar (GPR), a remote sensing geophysical survey method, to the archaeological investigation of earthen architecture on the Northwest Coast of North America. The objective of this thesis is to assess the ability of GPR to detect and distinguish between architectural features within an earthen matrix, and to understand the limitations and uncertainties of the method in this and similar contexts. This thesis also assesses the ability of GPR to provide data that are able to contribute to broad anthropological questions of demograph
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19

Chanda, Geoffrey. "Terahertz and infrared spectroscopy of novel superconductors." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-157061.

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The present thesis is devoted to the investigation of novel superconductors by phase-sensitive terahertz transmission and infrared to ultraviolet spectroscopy. In particular, a nominally undoped Pr2CuO4 superconducting thin film, an FeTe0.5Se0.5 thin film, and a LiFeAs single crystal have been investigated. The emphasis is on the low-frequency part of the optical spectrum (i.e., the terahertz and infrared spectrum), as the goal of the study was to shed light on the size and symmetry of the superconducting gaps and also to determine the temperature dependences as well as the absolute values of
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20

Sandikkaya, Mustafa Abdullah. "Site Classification Of Turkish National Strong-motion Recording Sites." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609728/index.pdf.

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Since 1976, the General Directorate of Disaster Affairs of Turkey has deployed several strong-motion accelerographs at selected sites. Within the framework of the project entitled Compilation of National Strong Ground Motion Database in Accordance with International Standards, initiated in 2006, site conditions at a total of 153 strong-motion sites were investigated within the uppermost 30 m depth through boreholes including Standard Penetration Testing and surface seismics by means of Multi-channel Analysis of Surface Waves (MASW). In this study, firstly, the assessment of the site characteri
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21

Heiner, Brandon D. "Multi-Scale Neotectonic Study of the Clear Lake Fault Zone in the Sevier Desert Basin (Central Utah)." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/3840.

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A multi-scale high-resolution geophysical and geological study was conducted in the Sevier Desert, central Utah, found within the Colorado Plateau-Basin and Range Transition Zone. The region is marked by with Quaternary volcanics and faulting as young as 660 yr B.P., with many fault scarps thought to have the potential for 7+ magnitude earthquakes. Three locations within the Sevier Desert which represent three different tectonic expressions of possible faulting at the surface were selected. These include a location found within surface sedimentation, a location with surface sedimentation and s
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22

Escobar, Valencia Esteban Julio. "Mise au point et exploitation d'une nouvelle technique pour la reconnaisance des sols : le PANDA 3." Thesis, Clermont-Ferrand 2, 2015. http://www.theses.fr/2015CLF22570/document.

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Ce travail présente les développements récents réalisés sur le pénétromètre PANDA 3. Il s'agit d'un pénétromètre dynamique instrumenté qui permet à partir de la mesure puis du découplage des ondes créées par l’impact sur l’appareil, d’obtenir pour chaque coup une courbe charge-enfoncement σp-sp du sol ausculté. L’exploitation de cette courbe permet de déterminer des paramètres de résistance (résistance de pointe qd), de déformation (module dynamique Ed P3), des caractéristiques d’amortissement Js et de célérité d'ondes (CsP3 et CpP3) des sols auscultés en fonction de la profondeur tout au long
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23

Kohls, Nicholas Everett. "Software Defined Radio Short Range Radar." BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/9027.

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High cost is a current problem with modern radar systems. Software-defined radios (SDRs) offer a possible solution for low-cost customizable radar systems. An SDR is a radio communi- cation system where, instead of the traditional radio components implemented in hardware, many of the components are implemented in software on a computer or embedded system. Although SDRs were originally designed for wireless communication systems, the firmware of an SDR can be configured into a radar system. With new companies entering the market, various types of low- cost SDRs have emerged. This thesis explore
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24

Gomes, Maria da Graça. "Simulação e inversão de ondas eletromagnéticas em diferentes meios geológico-geotécnicos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2010. http://hdl.handle.net/10183/29054.

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Este trabalho trata da simulação da propagação de ondas eletromagnéticas (1-D) em meios geológicos de propriedades físicas conhecidas (espessura, condutividade e permissividade elétrica), do registro das ondas EM refletidas (dados sintéticos) para uma antena receptora, e do uso desse registro em algoritmos de inversão e otimização que procuram estimar as propriedades físicas dos meios geológicos. Adotou-se modelos geológicos estratificados de pequena espessura (< 1,2 m) e altas frequências para a onda eletromagnética (800, 1000 e 1200 MHz). A propagação da onda eletromagnética é modelada por m
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25

Leroux, Maxime. "Supraconductivité, Onde de Densité de Charge et Phonons Mous dans les dichalcogénures 2H-NbSe2 et 2H-NbS2, et le composé intermétallique Lu5Ir4Si10." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENY069/document.

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Cette thèse présente une étude expérimentale de l'interaction entre la supraconductivité et une onde de densité de charge (ODC). Dans la théorie standard, la température critique d’un matériau supraconducteur est favorisée principalement par deux paramètres : une grande densité d’états au niveau de Fermi (nF), et un fort couplage électron-phonon. Cependant, un fort couplage électron-phonon favorise aussi l’apparition d’une ODC, ce qui réduit nF et rivalise ainsi avec la supraconductivité.Notre démarche a consisté à étudier deux composés où supraconductivité et ODC coexistent, et dans lesquels
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Hazard, Colby. "Validity of Holocene Analogs for Ancient Carbonate Stratigraphic Successions: Insights from a Heterogeneous Pleistocene Carbonate Platform Deposit." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5496.

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Observations of modern carbonate depositional environments and their accompanying depositional models have been used for decades in the reconstruction and interpretation of ancient carbonate depositional environments and stratigraphic successions. While these Holocene models are necessary for interpreting their more ancient counterparts, they inherently exclude important factors related to the erosion, diagenesis, and ultimate preservation of sediments and sedimentary structures that are ubiquitous in shallow marine carbonate environments. Andros Island, Bahamas is an ideal location to examine
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Lukiantchuki, Juliana Azoia. "Interpretação de resultados do ensaio SPT com base em instrumentação dinâmica." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-24052013-103725/.

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O ensaio de simples reconhecimento do solo (SPT) e usualmente utilizado para estimar a resistência do solo, atraves do índice NSPT, que representa a resistencia a penetração dinâmica do amostrador no solo. Esse índice é usado diretamente em correlações empíricas ou semi-empíricas na determinação da capacidade de suporte e recalque das fundações. Entretanto, esse ensaio tem sido alvo de críticas devido a utilização dessas correlações empíricas, geralmente baseadas em observações práticas e sem nenhum fundamento científico. Críticas também estão relacionadas com a dispersão dos resultados, devid
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Alata, Rodriguez Jair Angelo, and Ninancuro Wilfredo Zevillanos. "Correlación entre el número de golpes N60 del Ensayo de Penetración Estándar y la Velocidad de ondas de corte (Vs) para los suelos arenosos del distrito de Juliaca – Puno." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/656163.

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La aplicación del ensayo de penetración estándar (SPT) conlleva a un nivel de detalle alto, así mismo es costosa, requiere de mano de obra calificada para su ejecución y es demorada; su utilización es recomendada en suelos arenosos, restrictiva en suelos finos y plásticos y no recomendada en los demás tipos de suelos. Mientras que en el Análisis multicanal de ondas superficiales (MASW) su ejecución no se restringe, permite abarcar grandes áreas en tiempos cortos, no obstante, es un método indirecto, razón por la cual su aplicación debe ser verificada mediante perforaciones, obtención de muestr
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29

Reichmann, Markus. "Auslegung von Mikrowellen-Thermoprozess-Anlagen unter Nutzung von hochfrequenz-technischen Prinzipien." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2011. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-67409.

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Um der Mikrowellenerwärmung als Single- oder Hybridanwendung im industriellen Ofenbau ein weiteres Anwendungsspektrum zu eröffnen, wird dem Anlagenkonstrukteur im Rahmen dieser Arbeit eine Aufstellung von Entwicklungsprioritäten und Konstruktionshinweisen übergeben. Für eine energieeffiziente Ausnutzung des technologischen Potenzials wird hierbei nicht - wie in der Vergangenheit - die Feldstärkenverteilung, sondern das Reflexionsverhalten in den Vordergrund gestellt. Durch die Entwicklung und den Aufbau eines Messplatzes zur Bestimmung temperaturspezifischer Dielektrizitätsparameter konnte di
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Lavoué, François. "Inversion des formes d'ondes électromagnétiques en 2D pour le géoradar : vers une imagerie multi-paramètre à partir des données de surface." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENU050/document.

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Les premiers mètres à centaines de mètres de la proche surface terrestre sont le siège de processus naturels dont la compréhension requiert une caractérisation fine de la subsurface, via une estimation quantifiée de ses paramètres. Le géoradar est un outil de prospection indirecte à même d'ausculter les milieux naturels et d'en estimer les propriétés électriques (permittivité et conductivité). Basé sur la propagation d'ondes électromagnétiques à des fréquences allant du MHz à quelques GHz, le géoradar est utilisé à des échelles et pour des applications variées concernant la géologie, l'hydrolo
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PIRIU, ANDREEA ALEXANDRA. "ESSAYS ON GLOBALISATION: EFFECTS AND IMPLICATIONS FOR INDIVIDUALS." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/728739.

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This thesis studies the effects of import competition from China and Eastern Europe on the health and fertility decisions of German individuals working in manufacturing. Individuals are matched with separate measures of exposure to competition from China and Eastern Europe, respectively. To isolate exogenous supply shocks from the origin, instrumental variables for competition from each of China and Eastern Europe are constructed. Results in Chapter 1 suggest that higher import competition worsens individual health via job displacement, wage decline, shortened employment duration, incr
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Sudha, U. P. V. "Flutter Identification and Aeroelastic Stability during Wake Penetration." Thesis, 2015. https://etd.iisc.ac.in/handle/2005/4799.

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Demonstration of utter stability over the design envelope and identi fication of safe ight envelope is a prerequisite for operational clearance of any new aircraft design. An important step involved in flight flutter testing is the proper use of flutter prediction techniques to accurately predict flutter. This study focuses on flutter estimation techniques given flight test data. We review various flutter prediction techniques by simulating them on a three-degree-of-freedom aeroelastic system. We show that flutter margin and an auto-regressive model based approach are robust and reason
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Ke, Chuen-Jyi, and 柯春吉. "Measurement and Simulation of Wave Propagation and Penetration for Indoor Wireless Communications." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/93871736703336984898.

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Liu, Cangli. "I. Rigid body penetration into brittle materials. II. Phase change effect on shock wave propagation." Thesis, 1999. https://thesis.library.caltech.edu/7626/2/Liu_c_1999.pdf.

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<p>Part I.</p> <p>We have developed a technique for measuring the depth time history of rigid body penetration into brittle materials (hard rocks and concretes) under a deceleration of ~ 10<sup>5</sup> g. The technique includes bar-coded projectile, sabot-projectile separation, detection and recording systems. Because the technique can give very dense data on penetration depth time history, penetration velocity can be deduced. Error analysis shows that the technique has a small intrinsic error of ~ 3-4 % in time during penetration, and 0.3 to 0.7 mm in penetration depth. A series of 4140
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HUANG, PIN-SYUN, and 黃品勳. "Investigation of Ground Penetrating Radar Electromagnetic Wave Method to Inspect Pipeline Leaking." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/91724632880998771816.

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碩士<br>中華大學<br>土木工程學系<br>104<br>As time passes, an increasing number of buildings in Taiwan are characterized by old structures. In fact, there are more than three million old buildings in Taiwan. In addition, the country suffers from frequent earthquakes as it is situated at the boundary between the Philippine Sea Plate and Eurasian Sea Plate. Therefore, leakage is an inevitable problem in building structures. According to statistics, the majority reason for pipeline ruptures is loaded vibration, followed by corrosion of aging pipelines. Ninety percent of ruptured pipelines are PVC pipes. Usin
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Lin, Tzu-Yao, and 林子堯. "Use of Ground Penetrating Radar Electromagnetic Wave Method for Detecting the Pipeline Leakage." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/71565008498977082214.

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碩士<br>中華大學<br>土木工程學系碩士班<br>102<br>This study uses the 1GHz ground penetrating radar(GPR) to inspect the leakage of the pipeline in sand and mortar with the rebar. The research applies the basic theory of electricmagnetic wave and digital signal acquisition technique to explore the equivalent relative dielectric constant changes of the Ottawa sand and cement mortar containing reinforcement under the situation of pipeline leakages. The experiment analyzes the related leakage signal characteristics and changes according to the electromagnetic wave reflections, time difference and equivalent relat
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Chu, Cheng-Tsai, and 朱澄財. "PENETRATIVE IMAGING OF 2D OBJECTS EMBEDDED IN LAYERED MEDIA BY MULTIFREQUENCY PLANE WAVE BACKWARD PROPAGATION." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/30779280203342869413.

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碩士<br>大同工學院<br>電機工程學系<br>84<br>In this thesis, the penetrative imaging of 2D objects embedded in layeredmedia under multifrequency plane waves illumination is being investigated. Weknow that the Green's function of a line source embedded in layered media can beformulated by using plane wave expansion. Here, the multifrequency plane wave backward propagation is being proposed based on the Green's function mensioned above. The FFT is applied on computation process of the Fourier transform,fut
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Wu, Ming-Tien, and 吳明典. "PENETRATIVE IMAGING OF OBJECTS EMBEDDED IN PLANAR MULTILAYER MEDIA BY MULTIFREQUENCY PLANE WAVE BACKWARD PROPAGATION." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/27443323857393841085.

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博士<br>大同工學院<br>電機工程學系<br>84<br>ABSTRACT -- A penetrative imaging of 2D or 3D objects embedded in planar multilayer media is investigated under a multifrequency plane wave illumination. Both theoretical and experimental results are presented in this dissertation. A 3D multilayer Green''s function is derived in terms of plane wave superposition by using a 2D Fourier transform (FT). Based on this multilayer Green''s function, a penetrative imaging of 3D embedded objects can be expressed as
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39

Chuang, Sheng-Cheng, and 莊聖正. "Utilization of Ground Penetrating Radar (Electromagnetic Wave)Method to Inspect The Embedded Pipe Leaking Problems." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/74985504760964501954.

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碩士<br>中華大學<br>土木工程學系碩士班<br>99<br>This study applied Ground Penetrating Radar of 1GHz against standard sand (Ottawa sand) with moisture that contained the bearing layer in different depths, and that contained pipeline leak’s experiment for the exploration. Based on the basic theory of electromagnetic wave (EM) and wave speed in connection with digital signal mining technique, the experiment processed non-destructive scanning with Ground Penetrating Radar of 1GHz to explore standard sand (Ottawa sand) with moisture that contained the bearing layer in different depths, and that contained pipeline
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Chen, Yu-Tien, and 陳裕典. "Using an electromagnetic wave to pursue corrosion of steel (rebars) within concrete by Ground Penetrating Radar." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/55995971060050459127.

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PASCALE, VINCENZO. "Smart antennas for strategic environment." Doctoral thesis, 2016. http://hdl.handle.net/11573/925084.

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The objective of this Thesis consists in presenting in a concise and effective way the results achieved during researches and studies on satellite systems interference sources, advanced antenna arrays for satellite systems to mitigate the increasing anti-interference needs and on an innovative way to generates inhomogeneous wave in lossless media for contributing to the design of a novel type of antenna for deep penetrating lossy media.
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Jhang, ying-min, and 張英旻. "Make use of the ground-penetrating radar and electromagnetic wave image handle a technique to the road pipeline probes into its research." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/50373716314340136733.

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碩士<br>國立中央大學<br>土木工程研究所<br>95<br>The times in fast variety, people work to always hope fast and then valid, had better can also save expense in addition, deeply the land mine attain a method opposite open to dig in the clear ditch, ground-penetrating radar to explore, obvious since quick and again save expense, in the civil engineering in carry on in the city underground open to dig to usually concern the problem of underground pipeline, if can not control a pipeline to lay position correctly in times before, will cause to construct in the engineering in the days to come last inconvenience and
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Ramli, Khairun N., Raed A. Abd-Alhameed, Hmeda I. Hraga, D. T. W. Liang, and Peter S. Excell. "Electromagnetic Field Interaction Between Overhead High Voltage Power Transmission Line and Buried Utility Pipeline." 2011. http://hdl.handle.net/10454/5468.

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yes<br>This work presents the development of a new approach of modelling the source excitation and the penetration of structures by continuous propagating electromagnetic (EM) plane waves. The technique incorporates the solution of time-dependent Maxwell¿s equations and the initial value problem as the structures are illuminated by the plane waves. The propagation of waves from source excitation is simulated by solving a finite-difference Maxwell's equation in the time domain. Subgridding method is used to condense the lattice at the point of interest locally for observing field distribution i
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Samui, Pijush. "Geotechnical Site Characterization And Liquefaction Evaluation Using Intelligent Models." Thesis, 2009. https://etd.iisc.ac.in/handle/2005/628.

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Site characterization is an important task in Geotechnical Engineering. In situ tests based on standard penetration test (SPT), cone penetration test (CPT) and shear wave velocity survey are popular among geotechnical engineers. Site characterization using any of these properties based on finite number of in-situ test data is an imperative task in probabilistic site characterization. These methods have been used to design future soil sampling programs for the site and to specify the soil stratification. It is never possible to know the geotechnical properties at every location beneath an actua
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Samui, Pijush. "Geotechnical Site Characterization And Liquefaction Evaluation Using Intelligent Models." Thesis, 2009. http://hdl.handle.net/2005/628.

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Site characterization is an important task in Geotechnical Engineering. In situ tests based on standard penetration test (SPT), cone penetration test (CPT) and shear wave velocity survey are popular among geotechnical engineers. Site characterization using any of these properties based on finite number of in-situ test data is an imperative task in probabilistic site characterization. These methods have been used to design future soil sampling programs for the site and to specify the soil stratification. It is never possible to know the geotechnical properties at every location beneath an actua
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46

Reichmann, Markus. "Auslegung von Mikrowellen-Thermoprozess-Anlagen unter Nutzung von hochfrequenz-technischen Prinzipien: am Beispiel eines Entbinderungsofens für keramische Grünkörper." Doctoral thesis, 2010. https://tubaf.qucosa.de/id/qucosa%3A22757.

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Um der Mikrowellenerwärmung als Single- oder Hybridanwendung im industriellen Ofenbau ein weiteres Anwendungsspektrum zu eröffnen, wird dem Anlagenkonstrukteur im Rahmen dieser Arbeit eine Aufstellung von Entwicklungsprioritäten und Konstruktionshinweisen übergeben. Für eine energieeffiziente Ausnutzung des technologischen Potenzials wird hierbei nicht - wie in der Vergangenheit - die Feldstärkenverteilung, sondern das Reflexionsverhalten in den Vordergrund gestellt. Durch die Entwicklung und den Aufbau eines Messplatzes zur Bestimmung temperaturspezifischer Dielektrizitätsparameter konnte di
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Abhishek, Kumar *. "Seismic Microzonation Of Lucknow Based On Region Specific GMPE's And Geotechnical Field Studies." Thesis, 2012. https://etd.iisc.ac.in/handle/2005/2559.

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Mankind is facing the problem due to earthquake hazard since prehistoric times. Many of the developed and developing countries are under constant threats from earthquakes hazards. Theories of plate tectonics and engineering seismology have helped to understand earthquakes and also to predicate earthquake hazards on a regional scale. However, the regional scale hazard mapping in terms of seismic zonation has been not fully implemented in many of the developing countries like India. Agglomerations of large population in the Indian cities and poor constructions have raised the risk due to various
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Abhishek, Kumar *. "Seismic Microzonation Of Lucknow Based On Region Specific GMPE's And Geotechnical Field Studies." Thesis, 2012. http://etd.iisc.ernet.in/handle/2005/2559.

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Mankind is facing the problem due to earthquake hazard since prehistoric times. Many of the developed and developing countries are under constant threats from earthquakes hazards. Theories of plate tectonics and engineering seismology have helped to understand earthquakes and also to predicate earthquake hazards on a regional scale. However, the regional scale hazard mapping in terms of seismic zonation has been not fully implemented in many of the developing countries like India. Agglomerations of large population in the Indian cities and poor constructions have raised the risk due to various
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