Dissertations / Theses on the topic 'Wave field'
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Sharif, Ahmadian A. "Wave field around submerged breakwaters." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1414995/.
Full textWu, Cheng Y. (Cheng Yi) 1938. "Wave-wave interactions and the infrasonic pressure field in the ocean." Thesis, University of Auckland, 1988. http://hdl.handle.net/2292/2469.
Full textRogers, Jonathan Robert. "Wave-current interaction in the presence of a reflective wave field." Thesis, University of Liverpool, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397386.
Full textInch, Kris William. "Field observations of infragravity wave response to variable sea-swell wave forcing." Thesis, University of Plymouth, 2017. http://hdl.handle.net/10026.1/10164.
Full textKilby, Charles F. "Development of the shear wave magnetometer." Thesis, University of Bath, 1992. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306852.
Full textMelo, Jose Luis Branco Seabra de. "Nonlinear parametric wave model compared with field data." Monterey, Calif. : Naval Postgraduate School, 1985. http://catalog.hathitrust.org/api/volumes/oclc/57738811.html.
Full textHaase, Heiko. "Full-wave field interactions of nonuniform transmission lines." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=975448641.
Full textPinkham, Wade A. "A Lateral Field Excited Acoustic Wave Pesticide Sensor." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/PinkhamWA2007.pdf.
Full textGalicia, Felicisimo. "Plasma wave induced chaos in a magnetic field." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38863.
Full textIncludes bibliographical references (leaf 125).
by Felicisimo Galicia.
B.S.
M.Eng.
Kuntz, Achim. "Wave field analysis using virtual circular microphone arrays." München Verl. Dr. Hut, 2008. http://d-nb.info/993260292/04.
Full textXie, Zhongqiang. "Fourth-order finite difference methods for the time-domain Maxwell equations with applications to scattering by rough surfaces and interfaces." Thesis, Coventry University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369842.
Full textMcAllister, Mark Laing. "Analysis of laboratory and field measurements of directionally spread nonlinear ocean waves." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28762.
Full textArmstrong, Jonathan. "Design of a Free Field Blast Simulating Shock Tube." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32241.
Full textValle, A. N. "Causality of regular wave equations in an external field." Diss., Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/27655.
Full textJönsson, Anette. "The Baltic Sea Wave Field : Impacts on the Sediment and Biogeochemistry." Licentiate thesis, Linköping University, Linköping University, Department of Water and Environmental Studies, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5565.
Full textThe wave field in the Baltic Sea has been modelled for a two-year period with the spectral wave model HYPAS. There is a large seasonal variation in the field and a minor annual one, both reflect the wind variation in the area. Since the Baltic Sea is fetch limited, the dominant wind direction is important for the maximum wave heights.
By studying the modelled wave energy density in combination with bottom type maps, the effect of the wave field on the sediment surface is examined. Up to half the bottoms in the Baltic Sea are affected ~25% of the time. A statistical relation between wave energy density and bottom types is found for the Gulf of Riga, but in the rest of the area the sediment maps were to coarse. It is, due to this, not possible to say if the result is valid for the whole area or if it is site specific.
During resuspension events the remineralisation is increased since deposited organic material is reintroduced into the watermass and there exposed to higher levels of oxygen. This process could act as an increased regional source of nitrogen in nutrient budgets and thus influence the conditions for nitrogen fixation and perhaps explain some of the geographical differences in the nitrogen fixation rates.
Colbert, David B. "Field evaluation of ocean wave measurements with GPS buoys." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/5117.
Full textAn intercomparison of Datawell accelerometer buoys, Datawell GPS buoys, and prototype GPS buoys was conducted to determine the viability of using off-the-shelf GPS receivers to measure ocean surface waves. In the experiment, conducted off the coast of California near Bodega Bay, clusters off Datawell and prototype GPS buoys were deployed to collect ocean surface wave measurements. The first phase of the research was an intercomparison of wave measurements from a Datawell accelerometer sensor, the Magellan MMCX GPS receiver and the GlobalSat MR-350 GPS receiver. The Datawell accelerometer and the Magellan MMCX receiver measurements of both vertical and horizontal wave orbital excursions are in good agreement. The GlobalSat MR-350 receiver also accurately resolved horizontal wave orbital displacements but failed to reproduce the vertical wave excursion measurement by the accelerometer sensors. The second phase of the project was an independent intercomparison between the Datawell MK-II accelerometer buoys, Datawell Waverider GPS buoys, and the prototype GPS buoys built by the NPS team using the Magellan MMCX receiver. The intercomparison showed good agreement between the off-the-shelf GPS buoys, the newer Datawell GPS buoys as well as the traditional Datawell accelerometer buoys in the energetic part of the wave spectrum.
Narayana, Merugu Lakshmi. "Concurrent algorithms for microwave and millimetre wave field problems." Thesis, Queen's University Belfast, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334591.
Full textBleda, Pérez Sergio. "Contribuciones a la implementación de sistemas Wave Field Synthesis." Doctoral thesis, Universitat Politècnica de València, 2009. http://hdl.handle.net/10251/6685.
Full textBleda Pérez, S. (2009). Contribuciones a la implementación de sistemas Wave Field Synthesis [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/6685
Palancia
Samluk, Jesse Paul. "Millimeter wave far-field imaging via optical upconversion techniques." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 106 p, 2008. http://proquest.umi.com/pqdweb?did=1597632791&sid=10&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Full textFarnsworth, Katherine L. "Response Modes of the Lower Chesapeake Bay Wave Field." W&M ScholarWorks, 1997. http://web.vims.edu/library/Theses/Farnsworth97.PDF.
Full textSchumacher, Erik. "Diffraction of atoms by a standing-wave light field." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/185757.
Full textHoq, Qazi Enamul. "Quantization Of Spin Direction For Solitary Waves in a Uniform Magnetic Field." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4210/.
Full textKosleck, Sascha [Verfasser], and Günther F. [Akademischer Betreuer] Clauss. "Prediction of Wave-Structure Interaction by Advanced Wave Field Forecast / Sascha Kosleck. Betreuer: Günther F. Clauss." Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2013. http://d-nb.info/103231303X/34.
Full textHenry, Legena Albertha. "A study of ocean wave statistical properties using nonlinear, directional, phase-resolved ocean wave-field simulations." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1912/3230.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (p. 327-334).
In the present work, we study the statistics of wavefields obtained from non-linear phase-resolved simulations. The numerical model used to generate the waves models wave-wave interactions based on the fully non-linear Zakharov equations. We vary the simulated wavefield's input spectral properties: directional spreading function, Phillips parameter and peak shape parameter. We then investigate the relationships between a wavefield's input spectral properties and its output physical properties via statistical analysis. We investigate surface elevation distribution, wave definition methods in a nonlinear wavefield with a two-dimensional wavenumber, defined waves' distributions, and the occurrence and spacing of large wave events.
by Legena Albertha Henry.
S.M.
Kosleck, Sascha Verfasser], and Günther [Akademischer Betreuer] [Clauss. "Prediction of Wave-Structure Interaction by Advanced Wave Field Forecast / Sascha Kosleck. Betreuer: Günther F. Clauss." Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2013. http://d-nb.info/103231303X/34.
Full textVaring, Audrey. "Wave characterization for coastal and nearshore marine renewable energy applications : focus on wave breaking and spatial varaibility of the wave field." Thesis, Brest, 2019. http://www.theses.fr/2019BRES0105.
Full textSince Marine Renewable Energy (MRE) systems are submitted to wind generated waves. Accurate wave characterization is required in the coastal and nearshore environment where the waves are strongly modified by their interaction with the sea bottom, inducing refraction and wave breaking among other processes.A comprehensive study regarding the wave breaking initiation process is developed. The conventional kinematic criterion uc/c (ratio between the horizontal orbital velocity at the crest and the phase velocity) validity is numerically investigated. Our study leads us to a new kinematic wave breaking criterion based on the ratio between the maximum fluid velocity ||um|| near the wave crest and c. This new criterion improves the detection of the breaking initiation, since ||um|| accurately captures the location of the fluid instability leading to breaking.The wave field spatial variability in coastal areas is mostly studied with spectral wave models. We explore the ability of a phase-resolving model (Boussinesq-type, BT) to provide additional wave information for MRE applications.Spectral and BT models lead to significantly different spatial wave height and power patterns in the presence of strong bottom-induced refraction. We define an innovative methodology to extract wave information from satellite Synthetic Aperture Radar (SAR) images for comparison with models’ outputs. Our results highlight encouraging similarities between the BT model and SAR data
Marty, Pierre Noel. "Modeling of ultrasonic guided wave field generated by piezoelectric transducers." Thesis, Imperial College London, 2002. http://hdl.handle.net/10044/1/7222.
Full textSo, Poman Pok-Man. "Field-theory based CAD procedure for millimeter wave integrated circuits." Thesis, University of Ottawa (Canada), 1989. http://hdl.handle.net/10393/5884.
Full textBarksdale, Harry. "Millimeter wave scattering by rain in an antenna's near field." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/53906.
Full textPh. D.
Pham, Mai-Quyen. "Seismic wave field restoration using spare representations and quantitative analysis." Thesis, Paris Est, 2015. http://www.theses.fr/2015PESC1028/document.
Full textThis thesis deals with two different problems within the framework of convex and non convex optimization. The first one is an application to multiple removal in seismic data with adaptive filters and the second one is an application to blind deconvolution problem that produces characteristics closest to the Earth layers. More precisely : unveiling meaningful geophysical information from seismic data requires to deal with both random and structured “noises”. As their amplitude may be greater than signals of interest (primaries), additional prior information is especially important in performing efficient signal separation. We address here the problem of multiple reflections, caused by wave-field bouncing between layers. Since only approximate models of these phenomena are available, we propose a flexible framework for time-varying adaptive filtering of seismic signals, using sparse representations, based on inaccurate templates. We recast the joint estimation of adaptive filters and primaries in a new convex variational formulation. This approach allows us to incorporate plausible knowledge about noise statistics, datas parsity and slow filter variation in parsimony-promoting wavelet transforms. The designed primal-dual algorithm solves a constrained minimization problem that alleviates standard regularization issues in finding hyper parameters. The approach demonstrates significantly good performance in low signal-to-noise ratio conditions, both for simulatedand real field seismic data. In seismic exploration, a seismic signal (e.g. primary signal) is often represented as the results of a convolution between the “seismic wavelet” and the reflectivity series. The second goal of this thesis is to deconvolve them from the seismic signal which is presented in Chapter 6. The main idea of this work is to use an additional premise that the reflections occur as sparsely restricted, for which a study on the “sparsity measure”is considered. Some well known methods that fall in this category are proposed such as[Sacchi et al., 1994; Sacchi, 1997]. We propose a new penalty based on a smooth approximation of the l1/l2 function that makes a difficult non convex minimization problem. We develop a proximal-based algorithm to solve variational problems involving this function and we derive theoretical convergence results. We demonstrate the effectiveness of our method through a comparison with a recent alternating optimization strategy dealing with the exact l1/l2 term
Earlie, Claire Siobhan. "Field observations of wave induced coastal cliff erosion, Cornwall, UK." Thesis, University of Plymouth, 2015. http://hdl.handle.net/10026.1/3526.
Full textBalaji, Uma. "Field theory analysis and design of circular waveguide components." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ32732.pdf.
Full textWlodarczyk, A. J. "The application of spectral synthesis in electromagnetic field problems." Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381100.
Full textJönsson, Anette. "The Baltic Sea wave field : impacts on the sediment and biogeochemistry /." Linköping : Tema, Univ, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5565.
Full textLi, Fei 1959. "Flow field modifications and wave development in a plane Poiseuille flow." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/42483.
Full textSilva, Marcio José da. "Modelagem de um sistema para auralização musical utilizando Wave Field Synthesis." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/27/27158/tde-18052015-163521/.
Full textSeeking the practical application of the theory of Wave Field Synthesis (WFS) in music, a research aimed at modeling a sound system capable of creating spatial sound images with the use of this technique was made. Unlike most other techniques for sound projection that work with a small, localized listening area, WFS allows projecting the sounds of each sound source - such as musical instruments and voices - at different points within the hearing space, in a region that can cover almost the entire area comprised by this space, depending on the amount of installed speakers. The development of a modular structured code for WFS was based on the patch-oriented platform Pure Data (Pd), and on the AUDIENCE auralization system developed at USP, and it is integrable as a tool for interactive sound spatialization. The solution employs dynamic patches and a modular architecture, allowing code flexibility and maintainability, with advantages compared to other existing software, particularly in the installation, operation and to handle a large number of sound sources and speakers. For this system special speakers with features that facilitate its use in musical applications were also developed.
Corteel, Etienne. "Caractérisation et extensions de la wave field synthesis en conditions réelles." Paris 6, 2004. http://www.theses.fr/2004PA066410.
Full textOdarenko, E. N., Y. V. Sashkova, and A. A. Shmat’ko. "Localized field enhancement in slow-wave modes of modified Bragg waveguide." Thesis, IEEE, 2017. https://openarchive.nure.ua/handle/document/18123.
Full textPUEO, ORTEGA BASILIO JAVIER. "Analysis and enhancement of multiactuator panels for wave field synthesis reproduction." Doctoral thesis, Universitat Politècnica de València, 2008. http://hdl.handle.net/10251/3347.
Full textPueo Ortega, BJ. (2008). Analysis and enhancement of multiactuator panels for wave field synthesis reproduction [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/3347
Palancia
Bharadwaj, Sripoorna Paniyadi Krishna. "Theoretical Study of Spin-wave Effects in Quantum Ferromagnets." Thesis, University of Oregon, 2017. http://hdl.handle.net/1794/22640.
Full textBanfi, Davide. "A field and laboratory study on the dynamic response of the Eddystone lighthouse to wave loading." Thesis, University of Plymouth, 2018. http://hdl.handle.net/10026.1/11607.
Full textChen, Shuoqi. "Characterization of semiconductor-based guided wave structures using field theoretical analysis techniques." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq21927.pdf.
Full textHirisave, Shivaram Niranjan. "Attosecond Resolved Electron Wave Packet Dynamics in Helium." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/293618.
Full textCrawford, Anna M. "Field observations of linear transition ripple migration and wave orbital velocity skewness." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ54833.pdf.
Full textIzadian, Kaykhosro. "Blast wave from the explosion of finite pressurized sphere - far field experience." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107882.
Full textDans la présente recherche, le comportement en champ lointain des vagues de non-idéal souffle engendré par l'explosion d'une sphère pressurisée est étudié. Méthode de Roe est utilisée pour résoudre des lois de conservation pour la propagation du non-idéal explosions. Deux cas d'éclatement des sphères sont étudiés: la sphère chaude et froide de la sphère. L'équivalence entre le champ lointain ondes de souffle idéal et non idéal est examinée sur la base des courbes correspondant surpression de choc, les trajectoires de choc et propriétés d'écoulement. La solution numérique indique que l'explosion de sphère chaude et point idéal explosion de la même énergie initiale est équivalente dans le champ lointain. Au contraire avec l'explosion de sphère chaude, la présente étude a montré que l'explosion de sphère froide n'est pas équivalente à l'explosion point idéale de la même énergie initiale. De plus, les courbes de surpression pour les sphères chaudes avec pression initiale différente à la même énergie initiale fusionner dans le champ lointain. Toutefois, les courbes de surpression pour les sphères froide avec pression initiale différente à la même d'énergie initiale ne pas fusionner dans le champ lointain. choc de surpression de la forte explosion de la sphère froide est supérieure par rapport à la surpression de choc de source ponctuelle idéale avec la même énergie initiale dans le champ lointain d'ailleure que la surpression d'explosion de choc faibles de la sphère froide est inférieure par rapport à la surpression de choc de point idéal correspondant source à la même énergie initiale.La présente étude expose également sur la définition de l'énergie d'une sphère pressurisée et conclut que l'énergie de la formule de Brode est l'énergie véritable explosion, qui est l'énergie donnée à l'environnement par la propagation de l'explosion résulte de l'éclatement de la sphère. Cette énergie est appelée auto-similaire de l'énergie. Cette énergie a été utilisée pour déterminer la trajectoire choc de la sphère chaude dans le champ lointain. Les autres parties du gaz près du centre de la sphère conserver les non-idéales conditions initiale.
Oldfield, R. G. "The analysis and improvement of focused source reproduction with wave field synthesis." Thesis, University of Salford, 2013. http://usir.salford.ac.uk/29510/.
Full textMcNatt, J. Cameron. "Wave field patterns generated by wave energy converters." Thesis, 2012. http://hdl.handle.net/1957/33939.
Full textGraduation date: 2013
Leng-HsuanTseng and 曾薐璇. "Freak Wave Occurrence Probability in a Nonlinear Wave Field." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/69490452906039016641.
Full text國立成功大學
水利及海洋工程學系碩博士班
101
Freak wave will cause huge risks to ships or people doing costal activities. Prediction of freak wave can provide information for early warning and then decrease risk of hazards. Since the mechanism of freak wave is still unclear so far, deterministic prediction is not possible. Therefore stochastic method is used by this study for research of occurrence probability prediction of freak wave. In this study, nonlinear wave theory is applied for formula to estimate freak wave occurrence probability. Result demonstrates that occurrence probability of freak wave is related to two parameters: number of waves and kurtosis of water elevation. Analysis of the formula shows the maximum occurrence probability can become four times larger than the probability estimared under linear condition. Moreover, validated by the continuous measured data at Bisa Harbor, the average root-mean-square-error of assessment of occurrence probability is 22.4%. The possible reason to this difference is the ratio of significant wave height and root-mean-square of water elevation, which is assumed to be 4 under linear condition. Modified the formula by our field measurement data, the accuracy of estimation of occurrence probability improved. The modified formula is also validated by other in-situ data and can be used for future works with better assessments.
SHI, YOU-CHENG, and 石有成. "Millimeter-wave image line field analyses." Thesis, 1988. http://ndltd.ncl.edu.tw/handle/79569624495422770246.
Full textDai, Ting-Yu, and 戴廷育. "Field study of wave run-up." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/ub3qh9.
Full text國立中山大學
海洋環境及工程學系研究所
97
It is important to estimate the quantity of wave run-up and overtopping in seawall design. Previous study on the investigations of run-up is carried out mostly in the laboratories, it seldom perform in field measurements. About previous wave run-up equation can’t accurately estimate run-up elevation. According to run-up data, this study hope that it can make the formula to meet the actual local situation. It can have a better reference by designing coastal structures. This paper study wave run-up during five typhoons by Kalmaegi ,Fung-Wong,Nuri, Hagupit,and Jangmi. It measuring wave height , water level,and topography. These data show that the run-up elevation in bay higher than in breakwater. It shows that wave pass through a submerged breakwater can decay wave height. Analysis of measured data and found that when the wave height is about 1~4 meter with 1/(H0/L0)0.5 has a good correlation. It similar to some past researchers. Experience equations close to measured value when wave height smaller than 4 meter. When wave height more than 4 meter, the empirical prediction value is larger than measured value. Wave run-up doesn’t have good theory, and experience equations different about every field. The empirical equations depends on the scene to investigate the effects of various parameter.