Дисертації з теми "Low frequency electromagnetic waves"
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Liu, Zhongjian. "Investigation of low frequency electromagnetic waves for long-range lightning location." Thesis, University of Bath, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760951.
Повний текст джерелаSeguin, Sarah Ann. "Detection of low cost radio frequency receivers based on their unintended electromagnetic emissions and an active stimulation." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2009. http://scholarsmine.mst.edu/thesis/pdf/Seguin_09007dcc80708216.pdf.
Повний текст джерелаVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 23, 2009) Includes bibliographical references.
Umeda, Takayuki. "Generation of low-frequency electrostatic and electromagnetic waves as nonlinear consequences of beam–plasma interactions." American Institite of Physics, 2008. http://hdl.handle.net/2237/12028.
Повний текст джерелаChen, Chi-Chih. "Design and applications of two low frequency guided wave electromagnetic measurement structures." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1406708013.
Повний текст джерелаPokkuluri, Kiran S. "Effect of Admixtures, Chlorides, and Moisture on Dielectric Properties of Portland Cement Concrete in the Low Microwave Frequency Range." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/37039.
Повний текст джерелаMaster of Science
Bittle, James R. "2017 Full Solar Eclipse| Observations and LWPC Modeling of Very Low Frequency Electromagnetic Wave Propagation." Thesis, University of Colorado at Denver, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10843376.
Повний текст джерелаOn August 21, 2017 a total solar eclipse occurred over the United States commencing on the west coast moving across to the east coast providing an opportunity to observe how the rapid day-night-day transition changed the ionosphere’s D-region electron density and how very low frequency (VLF) electromagnetic wave propagation was affected. To observe the solar obscurity effects, VLF receivers were deployed in two locations: one in the path of totality in Lakeside, Nebraska and another south of the totality path in Hugo, Colorado. The locations were chosen to achieve an orthogonal geometry between the eclipse path and propagation path of U. S. Navy VLF transmitter in North Dakota, which operates at 25.2 kHz and has call sign NML. VLF amplitude and phase changes were observed in both Lakeside and Hugo during the eclipse. A negative phase change was observed at both receivers as solar obscuration progressively increased. The observed phase changes became positive as solar obscuration reduced. The opposite trend was observed for the amplitude of the transmitted signal: growth as max totality approached and decay during the shadow’s recession. The Long Wave Propagation Capability (LWPC) code developed by the US Navy was used to model the observations. LWPC is a modal solution finder for Earth-ionosphere waveguide propagation that takes into account the D-region density profile. In contrast to past efforts where a single ionosphere profile was assumed over the entire propagation path, a degree of spatial resolution along the path was sought here by solving for multiple segments of length 100-200 km along the path. LWPC modeling suggests that the effective reflection height changed from 71 km in the absence of the eclipse, to 78 km at the center of the path of totality during the total solar eclipse and is on agreement with past work.
MAROUAN, YOUSSEF. "Etat de polarisation et caracteristiques de propagation moyennes d'emissions em naturelles dans un magnetoplasma froid : application aux donnees ebf du satellite aureol-3." Orléans, 1988. http://www.theses.fr/1988ORLE2040.
Повний текст джерелаSuedan, Gibreel A. "High frequency beam diffraction by apertures and reflectors." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27545.
Повний текст джерелаApplied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
Kipp, Robert. "Mixed potential integral equation solutions for layered media structures : high frequency interconnects and frequency selective surfaces /." Thesis, Connect to this title online; UW restricted, 1993. http://hdl.handle.net/1773/5974.
Повний текст джерелаLachin, Anoosh. "Low frequency waves in the solar system." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267713.
Повний текст джерелаClausen, Lasse Boy Novock. "Ultra-low frequency waves in the magnetosphere." Thesis, University of Leicester, 2009. http://hdl.handle.net/2381/7533.
Повний текст джерелаBorderick, James David. "Ionospheric signatures of ultra low frequency waves." Thesis, University of Leicester, 2011. http://hdl.handle.net/2381/9170.
Повний текст джерелаFozard, John Andrew. "Diffraction and scattering of high frequency waves." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433239.
Повний текст джерелаLi, Min. "Robust topological design of low frequency electromagnetic devices." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121229.
Повний текст джерелаCette thèse présente un système automatique de conception topologique pour les dispositifs électromagnétiques à basse fréquence, par exemple, un moteur à aimant permanent intérieur. La conception automatisée est effectuée par un processus d'optimisation topologique de la forme : d'abord, le système emploie une analyse de sensibilité topologique pour examiner le domaine de la conception et déterminer la topologie optimale (répartition des sources et des matériaux); Deuxièmement, le système utilise une optimisation de forme pour améliorer la conception, les deux étapes étant effectuées alternativement jusqu'à ce que la condition d'optimalité est satisfaite. La robustesse de la topologie par rapport à de petites variations est étudiée et une mesure de robustesse est défini, à l'origine dans cette thèse, comme la performance de la fonction objectif, dans le pire des cas, pour l'optimisation topologique de la forme. Le concept de conception robuste peut donc être appliquée à la conception (conception topologique) des machines électriques. Autre que l'application de la conception du moteur, l'algorithme d'optimisation topologique, développé dans la thèse, a été utilisé à l'origine dans le contrôle non destructif pour trouver rapidement les fissures et preciser la forme optimale.
Miseikis, Vaidotas. "The interaction of graphene with high-frequency acoustic and electromagnetic waves." Thesis, University of Leeds, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.595843.
Повний текст джерелаWilson, Robert John. "Ultra low frequency waves in the Jovian magnetosphere." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251582.
Повний текст джерелаApo, Daniel Jolomi. "Low Frequency Microscale Energy Harvesting." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/49773.
Повний текст джерелаPh. D.
Davies, Jacob Owen. "Inspection of pipes using low frequency focused guided waves." Thesis, Imperial College London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.503091.
Повний текст джерелаBarnes, Timothy. "The generation of low-frequency water waves on beaches." Thesis, University of Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319128.
Повний текст джерелаSen, Mumtaz Bilgin. "Channel estimation techniques for single and multiple transmit antenna orthogonal frequency division multiplexing (OFDM) systems." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Sep%5FSen.pdf.
Повний текст джерелаThesis Advisor(s): Roberto Cristi, Murali Tummala. Includes bibliographical references (p. 71-72). Also available online.
Masumdar, Salim. "Vibration-based electromagnetic energy harvester for low-frequency road traffic." Thesis, California State University, Long Beach, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10638807.
Повний текст джерелаIn recent times, wireless sensor network (WSN) has played an important role for applications in the biomedical, commercial, and military fields. One of the applications is in intelligent transportation system (ITS), which uses sensors placed under the roads to detect vehicles. Progress in the field of Micro-Electro-Mechanical System (MEMS) has made it possible to make sensors that are small and easy to install, but operate on batteries which need to be replaced on a regular basis. For this reason, an alternative supply of power is necessary to run the sensors more effectively.
This thesis project proposes an idea in which the road vibrations can be used to harvest energy, which will further be used to supply power to the sensors. The concept of electromagnetic induction is applied to convert traffic-induced road vibrations into electrical energy. This project is more focused on getting maximum output from low vibrations by making use of a repulsive stack arrangement of magnets rather than using a single magnet while keeping the size of the energy harvester small. The simulation model of the harvester was designed using Simulink and COMSOL software.
The simulation model takes into consideration the vibration data and gives the output voltage generated by the harvester model. Output voltages for road vibrations occurring at different frequencies were tested. Using a repulsive stack approach provided an increase in output voltage compared to a single magnet approach.
Shepherd, Sebastian James. "The effects of extremely low frequency electromagnetic fields on insects." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/422277/.
Повний текст джерелаMa, Zuhui, and 馬祖輝. "Fast methods for low-frequency and static EM problems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/195987.
Повний текст джерелаpublished_or_final_version
Electrical and Electronic Engineering
Doctoral
Doctor of Philosophy
Trott, Keith Dennis. "A high frequency analysis of electromagnetic plane wave scattering by a fully illuminated perfectly conducting semi-infinite cone /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487323583622574.
Повний текст джерелаMcChesney, Jon Mearns Bellan Paul Murray Bellan Paul Murray. "Observations of stochastic ion heating by low frequency drift waves /." Diss., Pasadena, Calif. : California Institute of Technology, 1989. http://resolver.caltech.edu/CaltechETD:etd-02092007-143250.
Повний текст джерелаElsden, Tom. "Numerical modelling of ultra low frequency waves in Earth's magnetosphere." Thesis, University of St Andrews, 2016. http://hdl.handle.net/10023/15663.
Повний текст джерелаSmit, Jacobus Petrus. "Theoretical development and implementation of algorithms for the inversion of frequency domain airborne electromagnetic data into a layered earth." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-02222007-142602.
Повний текст джерелаToida, Mieko, Takashi Yoshiya, and Yukiharu Ohsawa. "Low-frequency electromagnetic fluctuations in thermal-equilibrium, multi-ion-species plasmas." American Institute of Physics, 2005. http://hdl.handle.net/2237/7057.
Повний текст джерелаDemanuele, Charmaine. "Analysis of very low frequency oscillations in electromagnetic brain signal recordings." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/159351/.
Повний текст джерелаKoyama, Shin. "Genotoxic effects of extremely low frequency electromagnetic fields and radiofrequency radiation." Kyoto University, 2007. http://hdl.handle.net/2433/136436.
Повний текст джерела0048
新制・課程博士
博士(人間・環境学)
甲第13165号
人博第372号
新制||人||91(附属図書館)
18||D||173(吉田南総合図書館)
UT51-2007-H438
京都大学大学院人間・環境学研究科相関環境学
(主査)教授 小松 賢志, 助教授 倉橋 和義, 助教授 三浦 智行
学位規則第4条第1項該当
Callegary, James Briggs. "Spatial sensitivity of low-induction-number frequency-domain electromagnetic-induction instruments." Diss., The University of Arizona, 2005. http://hdl.handle.net/10150/282901.
Повний текст джерелаMason, Sammuel P. "Atmospheric effects on radio frequency (RF) wave propagation in a humid, near-surface environment." Monterey, California : Naval Postgraduate School, 2010. http://edocs.nps.edu/npspubs/scholarly/theses/2010/Mar/10Mar%5FMason.pdf.
Повний текст джерелаThesis Advisor(s): Guest, Peter S. ; Goroch, Andreas K. "March 2010." Author(s) subject terms: Electromagnetic propagation, electromagnetic scattering, groundwave propagation, mathematical techniques, variance reduction. Includes bibliographical references (p. 67-68). Also available in print.
Kochergov, Roman. "Wave equations for low frequency waves in hot magnetically confined plasmas." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=967545463.
Повний текст джерелаDong, Chuanfei. "Heating of ions by low-frequency Alfven waves in solar atmosphere." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37160.
Повний текст джерелаNarita, Yasuhito. "Low frequency waves upstream and downstream of the terrestrial bow shock." Katlenburg-Lindau Copernicus GmbH, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?idn=979493870.
Повний текст джерелаLu, Paul ChihPeng. "Passive cancellation of low frequency sound waves using optimized embedded mechanisms." Diss., Restricted to subscribing institutions, 2009. http://proquest.umi.com/pqdweb?did=1876285421&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
Повний текст джерелаKim, Hyo Tae. "High frequency analysis of EM scattering from a circular conducting cylinder with dielectric/ferrite coating /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487322984315885.
Повний текст джерелаKim, Tony C. "Interaction of Very Low Frequency (VLF) and Extremely Low Frequency (ELF) Waves in the Ionospheric Plasma and Parametric Antenna Concept." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1486674973747427.
Повний текст джерелаTOIDA, MIEKO, and YUKIHARU OHSAWA. "Multi-ion-species effects on low-frequency electromagnetic fluctuations and energy transport." Cambridge University Press, 2006. http://hdl.handle.net/2237/10300.
Повний текст джерелаBhakta, Nitin. "Extremely low frequency electromagnetic properties in marine environments with non-parallel interfaces." Thesis, King's College London (University of London), 2001. https://kclpure.kcl.ac.uk/portal/en/theses/extremely-low-frequency-electromagnetic-properties-in-marine-environments-with-nonparallel-interfaces(b13ce673-453d-4aca-925a-a7adf547cb69).html.
Повний текст джерелаHill, Steven. "Measurements of low frequency acoustic backscatter from the sea surface." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/31022.
Повний текст джерелаScience, Faculty of
Earth, Ocean and Atmospheric Sciences, Department of
Graduate
Emelyanenko, Artyom. "Measurements and interpretation of lateral electromagnetic waves on the surface of low conductivity media." Thesis, Griffith University, 2020. http://hdl.handle.net/10072/393637.
Повний текст джерелаThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Eng & Built Env
Science, Environment, Engineering and Technology
Full Text
Diamanti, Kalliopi. "Active-sensor health monitoring of composite structures using low-frequency Lamb waves." Thesis, Imperial College London, 2005. http://hdl.handle.net/10044/1/8293.
Повний текст джерелаDrexler, Josef. "Determining the properties of low-frequency Farley-Buneman waves at high latitudes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ58028.pdf.
Повний текст джерелаFarell, Cesar E. "A theoretical investigation of the low-frequency sound generated by breaking waves." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0002/MQ40967.pdf.
Повний текст джерелаEriksson, Tommy. "Multi-point Measurements of Ultra Low Frequency Waves in the Terrestrial Magnetosphere." Doctoral thesis, Stockholm, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4404.
Повний текст джерелаLandgren, Markus. "A Survey of Low-Frequency Plasma Waves in the Magnetosphere of Saturn." Thesis, KTH, Rymd- och plasmafysik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-121328.
Повний текст джерелаMeyer, Patrik K. (Patrik Kristof). "The impact of high frequency/low energy seismic waves on unreinforced masonry." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/38557.
Повний текст джерелаIncludes bibliographical references (p. [85]-87).
Traditionally, the high frequency components of earthquake loading are disregarded as a source of structural damage because of their small energy content and because their frequency is too high to resonate with the natural frequencies of structures. This thesis argues that higher frequency waves travelling through stiff masonry structures can trigger two types of failure mechanisms that have not yet been taken into account. First, the high frequencies can cause small vertical inter-stone vibrations that result in irreversible relative displacements of the stones, which may ultimately lead to collapse. The energy needed to cause this deformation and failure comes largely from gravitational forces. The second failure mechanism is associated with the increase of the outward thrust that results from the partial fluidization and densification of the loose granular inner core of some unreinforced masonry walls. Preliminary results of a series of static and dynamic tests, as well as of numerical models, demonstrate the potentially destructive effects of high frequency/low energy seismic waves on unreinforced masonry structures.
by Patrik K. Meyer.
S.M.
Myung, Noh Hoon. "A high frequency analysis of electromagnetic plane wave scattering by perfectly-conducting semi-infinite parallel plate and rectangular waveguides with absorber coated inner walls /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487267546980859.
Повний текст джерелаShih, Wan-Chun. "Performance analysis of variable code rate signals transmitted over frequency-nonselective, slowly fading channels in a pulse-interference environment." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Sep%5FShih.pdf.
Повний текст джерела